Changeset 07a3253d in rtems


Ignore:
Timestamp:
11/23/98 19:07:58 (24 years ago)
Author:
Joel Sherrill <joel.sherrill@…>
Branches:
4.10, 4.11, 4.8, 4.9, 5, master
Children:
d1ee44e
Parents:
cd3fb80
Message:

Added base version of file system infrastructure. This includes a major
overhaul of the RTEMS system call interface. This base file system is
the "In-Memory File System" aka IMFS.

The design and implementation was done by the following people:

+ Joel Sherrill (joel@…)
+ Jennifer Averett (jennifer@…)
+ Steve "Mr Mount" Salitasc (salitasc@…)
+ Kerwin Wade (wade@…)

PROBLEMS
========

+ It is VERY likely that merging this will break the UNIX port. This

can/will be fixed.

+ There is likely some reentrancy/mutual exclusion needed.

+ Eventually, there should be a "mini-IMFS" description table to

eliminate links, symlinks, etc to save memory. All you need to
have "classic RTEMS" functionality is technically directories
and device IO. All the rest could be left out to save memory.

Files:
248 added
7 deleted
74 edited
1 moved

Legend:

Unmodified
Added
Removed

  • c/src/exec/libcsupport/include/rtems/libio.h

    rcd3fb80 r07a3253d  
    11/*
    2  * General purpose communication channel for RTEMS to allow UNIX/POSIX
    3  *    system call behavior on top of RTEMS IO devices.
     2 *  System call and file system interface definition
    43 *
    5  * TODO
    6  *      stat(2)
    7  *      unlink(2)
    8  *      rename(2)
     4 *  General purpose communication channel for RTEMS to allow UNIX/POSIX
     5 *  system call behavior under RTEMS.  Initially this supported only
     6 *  IO to devices but has since been enhanced to support networking
     7 *  and support for mounted file systems.
     8 *
     9 *  COPYRIGHT (c) 1989-1998.
     10 *  On-Line Applications Research Corporation (OAR).
     11 *  Copyright assigned to U.S. Government, 1994.
     12 *
     13 *  The license and distribution terms for this file may be
     14 *  found in the file LICENSE in this distribution or at
     15 *  http://www.OARcorp.com/rtems/license.html.
    916 *
    1017 *  $Id$
    … …  
    1623#include <sys/stat.h>
    1724
    18 typedef unsigned32 rtems_libio_offset_t;
    19 
    20 /*
    21  * An open file data structure, indexed by 'fd'
    22  * TODO:
    23  *    should really have a separate per/file data structure that this
    24  *    points to (eg: size, offset, driver, pathname should be in that)
    25  */
    26 
    27 typedef struct {
    28     rtems_driver_name_t *driver;
    29     rtems_libio_offset_t size;          /* size of file */
    30     rtems_libio_offset_t offset;        /* current offset into the file */
    31     unsigned32           flags;
    32     char                *pathname;      /* opened pathname */
    33     Objects_Id           sem;
    34     unsigned32           data0;         /* private to "driver" */
    35     void                *data1;         /* ... */
    36 } rtems_libio_t;
    37 
    38 
    39 /*
    40  * param block for read/write
    41  * Note: it must include 'offset' instead of using iop's offset since
    42  *       we can have multiple outstanding i/o's on a device.
     25/*
     26 *  Define data types which must be constructed using forward references.
     27 */
     28
     29typedef struct rtems_libio_tt rtems_libio_t;
     30
     31struct rtems_filesystem_location_info_tt;
     32typedef struct rtems_filesystem_location_info_tt
     33    rtems_filesystem_location_info_t;
     34
     35struct rtems_filesystem_mount_table_entry_tt;
     36typedef struct rtems_filesystem_mount_table_entry_tt
     37    rtems_filesystem_mount_table_entry_t;
     38
     39/*
     40 * Valid RTEMS file types.
     41 */
     42typedef enum {
     43  RTEMS_FILESYSTEM_DIRECTORY,
     44  RTEMS_FILESYSTEM_DEVICE,
     45  RTEMS_FILESYSTEM_HARD_LINK,
     46  RTEMS_FILESYSTEM_SYM_LINK,
     47  RTEMS_FILESYSTEM_MEMORY_FILE
     48} rtems_filesystem_node_types_t;
     49
     50/*
     51 *  File Handler Operations Table
     52 */
     53
     54typedef int (*rtems_filesystem_open_t)(
     55  rtems_libio_t *iop,
     56  const char    *pathname,
     57  unsigned32     flag,
     58  unsigned32     mode
     59);
     60
     61typedef int (*rtems_filesystem_close_t)(
     62  rtems_libio_t *iop
     63);
     64
     65typedef int (*rtems_filesystem_read_t)(
     66  rtems_libio_t *iop,
     67  void          *buffer,
     68  unsigned32     count
     69);
     70
     71typedef int (*rtems_filesystem_write_t)(
     72  rtems_libio_t *iop,
     73  const void    *buffer,
     74  unsigned32    count
     75);
     76
     77typedef int (*rtems_filesystem_ioctl_t)(
     78  rtems_libio_t *iop,
     79  unsigned32     command,
     80  void          *buffer
     81);
     82
     83typedef int (*rtems_filesystem_lseek_t)(
     84  rtems_libio_t *iop,
     85  off_t          length,
     86  int            whence
     87);
     88
     89typedef int (*rtems_filesystem_fstat_t)(
     90  rtems_filesystem_location_info_t *loc,
     91  struct stat                      *buf
     92);
     93
     94typedef int (*rtems_filesystem_fchmod_t)(
     95  rtems_filesystem_location_info_t *loc,
     96  mode_t                            mode
     97);
     98
     99typedef int (*rtems_filesystem_ftruncate_t)(
     100  rtems_libio_t *iop,
     101  off_t          length
     102);
     103
     104typedef int (*rtems_filesystem_fpathconf_t)(
     105  rtems_libio_t *iop,
     106  int name
     107);
     108
     109typedef int (*rtems_filesystem_fsync_t)(
     110  rtems_libio_t *iop
     111);
     112
     113typedef int (*rtems_filesystem_fdatasync_t)(
     114  rtems_libio_t *iop
     115);
     116
     117typedef struct {
     118    rtems_filesystem_open_t         open;
     119    rtems_filesystem_close_t        close;
     120    rtems_filesystem_read_t         read;
     121    rtems_filesystem_write_t        write;
     122    rtems_filesystem_ioctl_t        ioctl;
     123    rtems_filesystem_lseek_t        lseek;
     124    rtems_filesystem_fstat_t        fstat;
     125    rtems_filesystem_fchmod_t       fchmod;
     126    rtems_filesystem_ftruncate_t    ftruncate;
     127    rtems_filesystem_fpathconf_t    fpathconf;
     128    rtems_filesystem_fsync_t        fsync;
     129    rtems_filesystem_fdatasync_t    fdatasync;
     130} rtems_filesystem_file_handlers_r;
     131
     132/*
     133 *  File System Operations Table
     134 */
     135
     136/*
     137 *  XXX
     138 *  This routine does not allocate any space and rtems_filesystem_freenode_t
     139 *  is not called by the generic after calling this routine.
     140 *  ie. node_access does not have to contain valid data when the
     141 *      routine returns.
     142 */
     143
     144typedef int (*rtems_filesystem_mknod_t)(
     145   const char                        *path,       /* IN */
     146   mode_t                             mode,       /* IN */
     147   dev_t                              dev,        /* IN */
     148   rtems_filesystem_location_info_t  *pathloc     /* IN/OUT */
     149);
     150
     151/*
     152 *  rtems_filesystem_freenode_t must be called by the generic after
     153 *  calling this routine
     154 */
     155
     156typedef int (*rtems_filesystem_evalpath_t)(
     157  const char                        *pathname,      /* IN     */
     158  int                                flags,         /* IN     */
     159  rtems_filesystem_location_info_t  *pathloc        /* IN/OUT */
     160);
     161
     162typedef int (*rtems_filesystem_evalmake_t)(
     163   const char                       *path,       /* IN */
     164   rtems_filesystem_location_info_t *pathloc,    /* IN/OUT */
     165   const char                      **name        /* OUT    */
     166);
     167
     168typedef int (*rtems_filesystem_link_t)(
     169 rtems_filesystem_location_info_t  *to_loc,      /* IN */
     170 rtems_filesystem_location_info_t  *parent_loc,  /* IN */
     171 const char                        *name         /* IN */
     172);
     173
     174typedef int (*rtems_filesystem_unlink_t)(
     175 rtems_filesystem_location_info_t  *pathloc       /* IN */
     176);
     177
     178typedef int (*rtems_filesystem_chown_t)(
     179 rtems_filesystem_location_info_t  *pathloc,       /* IN */
     180 uid_t                              owner,         /* IN */
     181 gid_t                              group          /* IN */
     182);
     183
     184typedef int (*rtems_filesystem_freenode_t)(
     185 rtems_filesystem_location_info_t      *pathloc       /* IN */
     186);
     187
     188typedef int (*rtems_filesystem_rmnod_t)(
     189 rtems_filesystem_location_info_t      *pathloc       /* IN */
     190);
     191
     192typedef int (* rtems_filesystem_mount_t ) (
     193   rtems_filesystem_mount_table_entry_t *mt_entry     /* in */
     194);
     195
     196typedef int (* rtems_filesystem_fsmount_me_t )(
     197   rtems_filesystem_mount_table_entry_t *mt_entry
     198);
     199
     200typedef int (* rtems_filesystem_unmount_t ) (
     201   rtems_filesystem_mount_table_entry_t *mt_entry     /* in */
     202);
     203
     204typedef int (* rtems_filesystem_fsunmount_me_t ) (
     205   rtems_filesystem_mount_table_entry_t *mt_entry    /* in */
     206);
     207
     208typedef rtems_filesystem_node_types_t (* rtems_filesystem_node_type_t) (
     209  rtems_filesystem_location_info_t    *pathloc      /* in */
     210);
     211
     212typedef int (* rtems_filesystem_utime_t)(
     213  rtems_filesystem_location_info_t  *pathloc,       /* IN */
     214  time_t                             actime,        /* IN */
     215  time_t                             modtime        /* IN */
     216);
     217
     218typedef int (*rtems_filesystem_evaluate_link_t)(
     219  rtems_filesystem_location_info_t *pathloc,     /* IN/OUT */
     220  int                               flags        /* IN     */
     221);
     222
     223typedef int (*rtems_filesystem_symlink_t)(
     224 rtems_filesystem_location_info_t  *loc,         /* IN */
     225 const char                        *link_name,   /* IN */
     226 const char                        *node_name
     227);
     228
     229typedef int (*rtems_filesystem_readlink_t)(
     230 rtems_filesystem_location_info_t  *loc,     /* IN  */       
     231 char                              *buf,     /* OUT */       
     232 size_t                            bufsize   
     233);
     234
     235/*
     236 * operations table that must be defined for every file system.
     237 */
     238
     239/*
     240 * File system types
     241 */
     242typedef struct {
     243    rtems_filesystem_evalpath_t      evalpath;
     244    rtems_filesystem_evalmake_t      evalformake;
     245    rtems_filesystem_link_t          link;
     246    rtems_filesystem_unlink_t        unlink;
     247    rtems_filesystem_node_type_t     node_type;
     248    rtems_filesystem_mknod_t         mknod;
     249    rtems_filesystem_rmnod_t         rmnod;
     250    rtems_filesystem_chown_t         chown;
     251    rtems_filesystem_freenode_t      freenod;
     252    rtems_filesystem_mount_t         mount;
     253    rtems_filesystem_fsmount_me_t    fsmount_me;
     254    rtems_filesystem_unmount_t       unmount;
     255    rtems_filesystem_fsunmount_me_t  fsunmount_me;
     256    rtems_filesystem_utime_t         utime;
     257    rtems_filesystem_evaluate_link_t eval_link;
     258    rtems_filesystem_symlink_t       symlink;
     259    rtems_filesystem_readlink_t      readlink;
     260} rtems_filesystem_operations_table;
     261
     262#define IMFS_FILE_SYSTEM IMFS_ops
     263extern rtems_filesystem_operations_table  IMFS_ops;
     264
     265
     266/*
     267 * Structure used to determine a location/filesystem in the tree.
     268 */
     269
     270struct rtems_filesystem_location_info_tt
     271{
     272  void                                   *node_access;
     273  rtems_filesystem_file_handlers_r       *handlers;
     274  rtems_filesystem_operations_table      *ops;
     275  rtems_filesystem_mount_table_entry_t   *mt_entry;
     276};
     277
     278/*
     279 *  Structure used to contain file system specific information which
     280 *  is required to support fpathconf().
     281 */
     282
     283typedef struct {
     284  int    link_max;
     285  int    max_canon;
     286  int    max_input;
     287  int    name_max;
     288  int    path_max;
     289  int    pipe_buf;
     290  int    posix_async_io;
     291  int    posix_chown_restrictions;
     292  int    posix_no_trunc;
     293  int    posix_prio_io;
     294  int    posix_sync_io;
     295  int    posix_vdisable;
     296} rtems_filesystem_limits_and_options_t;
     297
     298/*
     299 * Structure for a mount table entry.
     300 */
     301
     302struct rtems_filesystem_mount_table_entry_tt{
     303  Chain_Node                             Node;
     304  rtems_filesystem_location_info_t       mt_point_node;
     305  rtems_filesystem_location_info_t       mt_fs_root;
     306  int                                    options;
     307  void                                  *fs_info;
     308
     309  rtems_filesystem_limits_and_options_t  pathconf_limits_and_options;
     310
     311  /*
     312   *  When someone adds a mounted filesystem on a real device,
     313   *  this will need to be used.
     314   *
     315   *  The best option long term for this is probably an open file descriptor.
     316   */
     317  char                                  *dev;
     318};
     319
     320/*
     321 *  Valid RTEMS file systems options
     322 */
     323
     324typedef enum
     325{
     326  RTEMS_FILESYSTEM_READ_ONLY,
     327  RTEMS_FILESYSTEM_READ_WRITE_ONLY,
     328  RTEMS_FILESYSTEM_BAD_OPTIONS
     329} rtems_filesystem_options_t;
     330
     331
     332/*
     333 *  An open file data structure, indexed by 'fd'
     334 *  TODO:
     335 *     should really have a separate per/file data structure that this
     336 *     points to (eg: size, offset, driver, pathname should be in that)
     337 */
     338
     339struct rtems_libio_tt {
     340    rtems_driver_name_t              *driver;
     341    off_t                             size;      /* size of file */
     342    off_t                             offset;    /* current offset into file */
     343    unsigned32                        flags;
     344    rtems_filesystem_location_info_t  pathinfo;
     345    Objects_Id                        sem;     
     346    unsigned32                        data0;     /* private to "driver" */
     347    void                             *data1;     /* ... */
     348    void                             *file_info; /* used by file handlers */
     349    rtems_filesystem_file_handlers_r *handlers;  /* type specific handlers */
     350};
     351
     352/*
     353 *  param block for read/write
     354 *  Note: it must include 'offset' instead of using iop's offset since
     355 *        we can have multiple outstanding i/o's on a device.
    43356 */
    44357
    45358typedef struct {
    46359    rtems_libio_t          *iop;
    47     rtems_libio_offset_t    offset;
     360    off_t                   offset;
    48361    unsigned8              *buffer;
    49362    unsigned32              count;
    … …  
    53366
    54367/*
    55  * param block for open/close
     368 *  param block for open/close
    56369 */
    57370
    … …  
    63376
    64377/*
    65  * param block for ioctl
     378 *  param block for ioctl
    66379 */
    67380
    … …  
    73386} rtems_libio_ioctl_args_t;
    74387
    75 
    76 /*
    77  * Values for 'flag'
     388/*
     389 *  Values for 'flag'
    78390 */
    79391
    … …  
    85397#define LIBIO_FLAGS_APPEND        0x0200  /* all writes append */
    86398#define LIBIO_FLAGS_CREATE        0x0400  /* create file */
     399#define LIBIO_FLAGS_CLOSE_ON_EXEC 0x0800  /* close on process exec() */
    87400
    88401#define LIBIO_FLAGS_READ_WRITE    (LIBIO_FLAGS_READ | LIBIO_FLAGS_WRITE)
    89402
     403
    90404void rtems_libio_init(void);
    91405
    92 int __rtems_open(const char  *pathname, unsigned32 flag, unsigned32 mode);
    93 int __rtems_close(int  fd);
    94 int __rtems_read(int fd, void *buffer, unsigned32 count);
    95 int __rtems_write(int fd, const void *buffer, unsigned32 count);
    96 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
    97 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
    98 int __rtems_fstat(int _fd, struct stat* _sbuf);
    99 
    100 /*
    101  * External I/O handlers
    102  */
    103 typedef struct {
    104     int (*open)(const char  *pathname, unsigned32 flag, unsigned32 mode);
    105     int (*close)(int  fd);
    106     int (*read)(int fd, void *buffer, unsigned32 count);
    107     int (*write)(int fd, const void *buffer, unsigned32 count);
    108     int (*ioctl)(int fd, unsigned32  command, void *buffer);
    109     int (*lseek)(int fd, rtems_libio_offset_t offset, int whence);
     406/*
     407 *  External I/O handlers
     408 */
     409
     410typedef int (*rtems_libio_open_t)(
     411  const char  *pathname,
     412  unsigned32  flag,
     413  unsigned32  mode
     414);
     415
     416typedef int (*rtems_libio_close_t)(
     417  int  fd
     418);
     419
     420typedef int (*rtems_libio_read_t)(
     421  int         fd,
     422  void       *buffer,
     423  unsigned32  count
     424);
     425
     426typedef int (*rtems_libio_write_t)(
     427  int         fd,
     428  const void *buffer,
     429  unsigned32  count
     430);
     431
     432typedef int (*rtems_libio_ioctl_t)(
     433  int         fd,
     434  unsigned32  command,
     435  void       *buffer
     436);
     437
     438typedef int (*rtems_libio_lseek_t)(
     439  int    fd,
     440  off_t  offset,
     441  int    whence
     442);
     443
     444typedef struct {
     445    rtems_libio_open_t   open;
     446    rtems_libio_close_t  close;
     447    rtems_libio_read_t   read;
     448    rtems_libio_write_t  write;
     449    rtems_libio_ioctl_t  ioctl;
     450    rtems_libio_lseek_t  lseek;
    110451} rtems_libio_handler_t;
    111452
    112 void rtems_register_libio_handler(int handler_flag,
    113                                  const rtems_libio_handler_t *handler);
     453/*
     454 *  Register a set of external handlers
     455 */
     456
     457void rtems_register_libio_handler(
     458  int                          handler_flag,
     459  const rtems_libio_handler_t *handler
     460);
     461
     462/*
     463 *  Macros to assist in management of external IO handlers.
     464 */
    114465
    115466#define RTEMS_FILE_DESCRIPTOR_TYPE_FILE         0x0000
    … …  
    129480
    130481/*
     482 *  The following macros are used to build up the permissions sets
     483 *  used to check permissions.  These are similar in style to the
     484 *  mode_t bits and should stay compatible with them.
     485 */
     486
     487#define RTEMS_LIBIO_PERMS_READ   S_IROTH
     488#define RTEMS_LIBIO_PERMS_WRITE  S_IWOTH
     489#define RTEMS_LIBIO_PERMS_RDWR   (S_IROTH|S_IWOTH)
     490#define RTEMS_LIBIO_PERMS_EXEC   S_IXOTH
     491#define RTEMS_LIBIO_PERMS_SEARCH RTEMS_LIBIO_PERMS_EXEC
     492#define RTEMS_LIBIO_PERMS_RWX    S_IRWXO
     493
     494/*
     495 *  Macros
     496 */
     497
     498#define rtems_filesystem_make_dev_t( _major, _minor ) \
     499  ((((dev_t)(_major)) << 32) | (dev_t)(_minor))
     500
     501#define rtems_filesystem_split_dev_t( _dev, _major, _minor ) \
     502  do { \
     503    (_major) = (rtems_device_major_number) ((_dev) >> 32); \
     504    (_minor) = (rtems_device_minor_number) ((_dev) & 0xFFFFFFFF); \
     505  } while(0)
     506
     507/*
     508 * Verifies that the permission flag is valid.
     509 */
     510#define rtems_libio_is_valid_perms( _perm )     \
     511 (~ ((~RTEMS_LIBIO_PERMS_RWX) & _perm ))
     512
     513
     514/*
     515 *  Prototypes for filesystem
     516 */
     517
     518void rtems_filesystem_initialize( void );
     519
     520
     521/*
    131522 * Callbacks from TERMIOS routines to device-dependent code
    132523 */
     524
    133525#include <termios.h>
     526
    134527typedef struct rtems_termios_callbacks {
    135   int       (*firstOpen)(int major, int minor, void *arg);
    136   int       (*lastClose)(int major, int minor, void *arg);
    137   int       (*pollRead)(int minor);
    138   int       (*write)(int minor, const char *buf, int len);
    139   int       (*setAttributes)(int minor, const struct termios *t);
    140   int       (*stopRemoteTx)(int minor);
    141   int       (*startRemoteTx)(int minor);
    142   int       outputUsesInterrupts;
     528  int    (*firstOpen)(int major, int minor, void *arg);
     529  int    (*lastClose)(int major, int minor, void *arg);
     530  int    (*pollRead)(int minor);
     531  int    (*write)(int minor, const char *buf, int len);
     532  int    (*setAttributes)(int minor, const struct termios *t);
     533  int    (*stopRemoteTx)(int minor);
     534  int    (*startRemoteTx)(int minor);
     535  int    outputUsesInterrupts;
    143536} rtems_termios_callbacks;
    144537
    145538/*
    146  * Device-independent TERMIOS routines
    147  */
     539 *  Device-independent TERMIOS routines
     540 */
     541
    148542void rtems_termios_initialize (void);
     543
    149544rtems_status_code rtems_termios_open (
    150545  rtems_device_major_number      major,
    … …  
    152547  void                          *arg,
    153548  const rtems_termios_callbacks *callbacks
    154   );
    155 rtems_status_code rtems_termios_close (void *arg);
    156 rtems_status_code rtems_termios_read (void *arg);
    157 rtems_status_code rtems_termios_write (void *arg);
    158 rtems_status_code rtems_termios_ioctl (void *arg);
    159 int rtems_termios_enqueue_raw_characters (void *ttyp, char *buf, int len);
    160 int rtems_termios_dequeue_characters (void *ttyp, int len);
     549);
     550
     551rtems_status_code rtems_termios_close(
     552  void *arg
     553);
     554
     555rtems_status_code rtems_termios_read(
     556  void *arg
     557);
     558
     559rtems_status_code rtems_termios_write(
     560  void *arg
     561);
     562
     563rtems_status_code rtems_termios_ioctl(
     564  void *arg
     565);
     566
     567int rtems_termios_enqueue_raw_characters(
     568  void *ttyp,
     569  char *buf,
     570  int   len
     571);
     572
     573int rtems_termios_dequeue_characters(
     574  void *ttyp,
     575  int   len
     576);
     577
    161578void rtems_termios_reserve_resources(
    162579  rtems_configuration_table *configuration,
    … …  
    164581);
    165582
     583int unmount(
     584  const char *mount_path
     585);
     586
     587int mount(
     588  rtems_filesystem_mount_table_entry_t **mt_entry,
     589  rtems_filesystem_operations_table    *fs_ops,
     590  char                                 *fsoptions,
     591  char                                 *device,
     592  char                                 *mount_point
     593);
     594
    166595#endif /* _RTEMS_LIBIO_H */

  • c/src/exec/libcsupport/src/__brk.c

    rcd3fb80 r07a3253d  
    1 #if !defined(RTEMS_UNIX)
    2 
    31/*
    4  *  RTEMS "Broken" __brk/__sbrk Implementation
     2 *  RTEMS "Broken" __brk Implementation
    53 *
    6  *  NOTE: sbrk is BSP provided.
    7  *
     4 *  NOTE: sbrk() is provided by each BSP.
    85 *
    96 *  COPYRIGHT (c) 1989-1998.
    … …  
    1916
    2017#include <rtems.h>
     18#if !defined(RTEMS_UNIX)
    2119
    22 #include <signal.h>
    2320#include <errno.h>
    24 #include <sys/types.h>
    25 #ifdef RTEMS_NEWLIB
    26 #include <reent.h>
    27 #endif
    28 #include <unistd.h>
    2921
    30 /* we use RTEMS for memory management.  We don't need sbrk */
    31 
    32 void * __sbrk(int incr)
    33 {
    34   errno = EINVAL;
    35   return (void *)0;
    36 }
    37 
    38 int __brk( const void *endds )
     22int __brk(
     23  const void *endds
     24)
    3925{
    4026  errno = EINVAL;
    4127  return -1;
    4228}
    43 
    4429#endif

  • c/src/exec/libcsupport/src/__gettod.c

    rcd3fb80 r07a3253d  
    1 #define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
    2 
    3 #include <rtems.h>
    4 
    5 #if !defined(RTEMS_UNIX)
    61/*
    7  *  RTEMS gettimeofday Implementation
    8  *
     2 *  gettimeofday() - SVR4 and BSD4.3 extension required by Newlib
    93 *
    104 *  COPYRIGHT (c) 1989-1998.
    … …  
    1913 */
    2014
     15#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
     16
     17#include <rtems.h>
     18
     19#if !defined(RTEMS_UNIX)
    2120#ifdef RTEMS_NEWLIB
    2221#include <sys/reent.h>
    … …  
    6261   *  NOTE: XXX this routine should really be in the executive proper.
    6362   */
    64  
     63
    6564  rtems_interrupt_disable(level);
    6665    seconds      = _TOD_Seconds_since_epoch;
    … …  
    8786}
    8887
    89 #if defined(RTEMS_NEWLIB) 
     88#if defined(RTEMS_NEWLIB)
    9089
    9190/*
    … …  
    103102
    104103/*
    105  *  "System call" version 
     104 *  "System call" version
    106105 */
    107106

  • c/src/exec/libcsupport/src/__times.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  RTEMS _times Implementation
    3  *
     2 *  times() - POSIX 1003.1b 4.5.2 - Get Process Times
    43 *
    54 *  COPYRIGHT (c) 1989-1998.
    … …  
    2625)
    2726{
    28   rtems_status_code      status;
    29   rtems_interval         ticks_since_boot;
     27  rtems_status_code  status;
     28  rtems_interval     ticks;
    3029
    3130  if ( !ptms ) {
    … …  
    3534
    3635  /* "POSIX" does not seem to allow for not having a TOD */
    37   status = rtems_clock_get(
    38     RTEMS_CLOCK_GET_TICKS_SINCE_BOOT,
    39     &ticks_since_boot
    40   );
     36  status = rtems_clock_get( RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &ticks );
    4137  if ( status != RTEMS_SUCCESSFUL ) {
    4238    assert( 0 );
    … …  
    4541
    4642  /*
    47    *  RTEMS has no notion of system versus user time and does
    48    *  not (as of 3.2.0) keep track of CPU usage on a per task basis.
     43   *  RTEMS has no notion of system versus user time and although
     44   *  a way to keep track of per task CPU usage was added since
     45   *  3.6.0, this routine does not utilize it yet.
    4946   */
    5047
    51   ptms->tms_utime  = ticks_since_boot;
     48  ptms->tms_utime  = ticks;
    5249  ptms->tms_stime  = 0;
    5350  ptms->tms_cutime = 0;
    … …  
    5653  return 0;
    5754}
     55
     56/*
     57 *  times()
     58 *
     59 *  times() system call wrapper for _times() above.
     60 */
    5861
    5962clock_t times(
    … …  
    6467}
    6568
     69/*
     70 *  _times_r
     71 *
     72 *  This is the Newlib dependent reentrant version of times().
     73 */
     74
    6675#if defined(RTEMS_NEWLIB)
     76
     77#include <reent.h>
     78
    6779clock_t _times_r(
    6880   struct _reent *ptr,
    … …  
    7082)
    7183{
    72   return _times(ptms);
     84  return _times( ptms );
    7385}
    7486#endif

  • c/src/exec/libcsupport/src/closedir.c

    rcd3fb80 r07a3253d  
    22 *  closedir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
    537 */
    638
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)closedir.c  5.9 (Berkeley) 2/23/91";
     41#endif /* LIBC_SCCS and not lint */
    742
    843#include <sys/types.h>
    … …  
    1247#include <errno.h>
    1348
    14 int closedir(
    15   register DIR *dirp
    16 )
     49
     50#include "libio_.h"
     51
     52/*
     53 * close a directory.
     54 */
     55int
     56closedir(dirp)
     57        register DIR *dirp;
    1758{
    18   errno = ENOSYS;
    19   return -1;
     59        int fd;
     60
     61        if ( !dirp )
     62          set_errno_and_return_minus_one( EBADF );
     63
     64        fd = dirp->dd_fd;
     65        dirp->dd_fd = -1;
     66        dirp->dd_loc = 0;
     67        (void)free((void *)dirp->dd_buf);
     68        (void)free((void *)dirp);
     69        return(close(fd));
    2070}

  • c/src/exec/libcsupport/src/getdents.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  Just enough to make newlib return an error.
     2 *  getdents() - Get Directory Entries
     3 *
     4 *  SVR4 and SVID extension required by Newlib readdir() family.
     5 *
     6 *  This routine will dd_len / (sizeof dirent) directory entries relative to
     7 *  the current directory position index. These entries will be placed in
     8 *  character array pointed to by -dd_buf-
     9 *
     10 *  COPYRIGHT (c) 1989-1998.
     11 *  On-Line Applications Research Corporation (OAR).
     12 *  Copyright assigned to U.S. Government, 1994.
     13 *
     14 *  The license and distribution terms for this file may be
     15 *  found in the file LICENSE in this distribution or at
     16 *  http://www.OARcorp.com/rtems/license.html.
    317 *
    418 *  $Id$
    519 */
    620
     21#include <errno.h>
     22
     23#include "libio_.h"
     24
    725int getdents(
    8   int   fd,
    9   void *buf,
    10   int   len
     26  int   dd_fd,
     27  char *dd_buf,
     28  int   dd_len
    1129)
    1230{
    13   return -1;
     31  rtems_libio_t                    *iop;
     32  rtems_filesystem_location_info_t  loc;
     33
     34  /*
     35   *  Get the file control block structure associated with the file descriptor
     36   */
     37
     38  iop = rtems_libio_iop( dd_fd );
     39
     40  /*
     41   *  Make sure we are working on a directory
     42   */
     43  loc = iop->pathinfo;
     44  if ( !loc.ops->node_type )
     45    set_errno_and_return_minus_one( ENOTSUP );
     46   
     47  if ( (*loc.ops->node_type)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY )
     48    set_errno_and_return_minus_one( ENOTDIR );
     49
     50  /*
     51   *  Return the number of bytes that were actually transfered as a result
     52   *  of the read attempt.
     53   */
     54
     55  if ( !iop->handlers->read )
     56    set_errno_and_return_minus_one( ENOTSUP );
     57
     58  return (*iop->handlers->read)( iop, dd_buf, dd_len  );
    1459}

  • c/src/exec/libcsupport/src/hosterr.c

    rcd3fb80 r07a3253d  
    1414
    1515#include <rtems.h>
     16#if defined(RTEMS_UNIX)
    1617#include <errno.h>
    1718
    18 int host_errno(void);
     19int host_errno( void );
    1920
    2021/*
    21  * copy host errno, if any to thread aware errno, if any
     22 *  fix_syscall_errno
     23 *
     24 *  copy host errno, if any to thread aware errno, if any
    2225 */
    2326
    24 void fix_syscall_errno(void)
     27void fix_syscall_errno( void )
    2528{
    26     errno = host_errno();
     29  errno = host_errno();
    2730}
    2831
    2932/*
    30  * Get the host system errno, if any
    31  * When using newlib (or possibly other libc's) on top of UNIX
    32  * the errno returned by system calls may be unavailable due
    33  * to trickery of making errno thread aware.
    34  * This provides a kludge of getting at it.
     33 *  host_errno
     34 *
     35 *  Get the host system errno, if any
     36 *  When using newlib (or possibly other libc's) on top of UNIX
     37 *  the errno returned by system calls may be unavailable due
     38 *  to trickery of making errno thread aware.
     39 *  This provides a kludge of getting at it.
    3540 */
    3641
    … …  
    3944int host_errno(void)
    4045{
    41     return errno;
     46  return errno;
    4247}
    43 
     48#endif

  • c/src/exec/libcsupport/src/libio.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  Provide UNIX/POSIX-like io system calls for RTEMS using the
    3  *  RTEMS IO manager
     2 *  This file contains the support infrastructure used to manage the
     3 *  table of integer style file descriptors used by the low level
     4 *  POSIX system calls like open(), read, fstat(), etc.
     5 *
     6 *  This provides the foundation for POSIX compliant IO system calls
     7 *  for RTEMS.
     8 *
     9 *  COPYRIGHT (c) 1989-1998.
     10 *  On-Line Applications Research Corporation (OAR).
     11 *  Copyright assigned to U.S. Government, 1994.
     12 *
     13 *  The license and distribution terms for this file may be
     14 *  found in the file LICENSE in this distribution or at
     15 *  http://www.OARcorp.com/rtems/license.html.
    416 *
    517 *  $Id$
    618 */
    719
    8 #include <rtems.h>
    9 #include <rtems/assoc.h>                /* assoc.h not included by rtems.h */
    10 
    11 #include <stdio.h>                      /* O_RDONLY, et.al. */
    12 #include <fcntl.h>                      /* O_RDONLY, et.al. */
    13 #include <assert.h>
    14 
    15 #if ! defined(O_NDELAY)
    16 # if defined(solaris2)
    17 #  define O_NDELAY O_NONBLOCK
    18 # elif defined(RTEMS_NEWLIB)
    19 #  define O_NDELAY _FNBIO
    20 # endif
    21 #endif
    22 
    23 
    24 #include <errno.h>
    25 #include <string.h>                     /* strcmp */
    26 #include <unistd.h>
    27 #include <stdlib.h>                     /* calloc() */
    28 
    29 #include "libio.h"                      /* libio.h not pulled in by rtems */
    30 
    31 /*
    32  * Semaphore to protect the io table
    33  */
    34 
    35 Objects_Id rtems_libio_semaphore;
    36 
    37 #define RTEMS_LIBIO_SEM         rtems_build_name('L', 'B', 'I', 'O')
    38 #define RTEMS_LIBIO_IOP_SEM(n)  rtems_build_name('L', 'B', 'I', n)
    39 
    40 extern unsigned32     rtems_libio_number_iops;
    41 rtems_libio_t *rtems_libio_iops;
    42 rtems_libio_t *rtems_libio_last_iop;
    43 
    44 #define rtems_libio_iop(fd)    ((((unsigned32)(fd)) < rtems_libio_number_iops) ? \
    45                                        &rtems_libio_iops[fd] : 0)
    46 
    47 #define rtems_libio_check_fd(fd) \
    48     do { \
    49         if ((unsigned32) (fd) >= rtems_libio_number_iops) \
    50         { \
    51             errno = EBADF; \
    52             return -1; \
    53         } \
    54     } while (0)
    55 
    56 #define rtems_libio_check_buffer(buffer) \
    57     do { \
    58         if ((buffer) == 0) \
    59         { \
    60             errno = EINVAL; \
    61             return -1; \
    62         } \
    63     } while (0)
    64 
    65 #define rtems_libio_check_count(count) \
    66     do { \
    67         if ((count) == 0) \
    68         { \
    69             return 0; \
    70         } \
    71     } while (0)
    72 
    73 #define rtems_libio_check_permissions(iop, flag) \
    74     do { \
    75         if (((iop)->flags & (flag)) == 0) \
    76         { \
    77               errno = EINVAL; \
    78               return -1; \
    79         } \
    80     } while (0)
    81 
    82 /*
    83  * External I/O handlers
    84  *
    85  * Space for all possible handlers is preallocated
    86  * to speed up dispatch to external handlers.
    87  */
    88 
    89 static rtems_libio_handler_t handlers[15];
    90 
    91 void
    92 rtems_register_libio_handler(
    93     int                         handler_flag,
    94     const rtems_libio_handler_t *handler
    95 )
    96 {
    97   int handler_index = rtems_file_descriptor_type_index(handler_flag);
     20#include "libio_.h"                   /* libio_.h pulls in rtems */
     21
     22/*
     23 *  Global variables used to manage the File Descriptor Table.
     24 *  IOP = IO Pointer.
     25 */
     26
     27rtems_id                rtems_libio_semaphore;
     28rtems_libio_t          *rtems_libio_iops;
     29rtems_libio_t          *rtems_libio_last_iop;
     30rtems_libio_handler_t   rtems_libio_handlers[15];
     31
     32/*
     33 *  rtems_register_libio_handler
     34 *
     35 *  This function registers an external IO handler set.  This lets
     36 *  other subsystems have their own versions of many of the system
     37 *  calls.  For example, the networking code registers handlers which
     38 *  map the system calls for read() and write() to socket calls.
     39 *
     40 */
     41
     42void rtems_register_libio_handler(
     43  int                          handler_flag,
     44  const rtems_libio_handler_t *handler
     45)
     46{
     47  int handler_index = rtems_file_descriptor_type_index( handler_flag );
     48
    9849
    9950  if ((handler_index < 0) || (handler_index >= 15))
    10051    rtems_fatal_error_occurred( RTEMS_INVALID_NUMBER );
    101   handlers[handler_index] = *handler;
    102 }
    103 
    104 /*
    105  * Called by bsp startup code to init the libio area.
    106  */
    107 
    108 void
    109 rtems_libio_init(void)
    110 {
    111     rtems_status_code rc;
    112 
    113     if (rtems_libio_number_iops > 0)
    114     {
    115         rtems_libio_iops = (rtems_libio_t *) calloc(rtems_libio_number_iops,
    116                                                     sizeof(rtems_libio_t));
    117         if (rtems_libio_iops == NULL)
    118             rtems_fatal_error_occurred(RTEMS_NO_MEMORY);
    119 
    120         rtems_libio_last_iop = rtems_libio_iops + (rtems_libio_number_iops - 1);
     52
     53  rtems_libio_handlers[handler_index] = *handler;
     54}
     55
     56/*
     57 *  rtems_libio_init
     58 *
     59 *  Called by BSP startup code to initialize the libio subsystem.
     60 */
     61
     62void rtems_libio_init( void )
     63{
     64  rtems_status_code rc;
     65
     66  /*
     67   *  Allocate memory for the IOP Table
     68   */
     69
     70  if ( rtems_libio_number_iops > 0 ) {
     71    rtems_libio_iops =
     72      (rtems_libio_t *) calloc(rtems_libio_number_iops, sizeof(rtems_libio_t));
     73
     74    if (rtems_libio_iops == NULL)
     75        rtems_fatal_error_occurred( RTEMS_NO_MEMORY );
     76
     77    rtems_libio_last_iop = rtems_libio_iops + (rtems_libio_number_iops - 1);
     78  }
     79
     80  /*
     81   *  Create the binary semaphore used to provide mutual exclusion
     82   *  on the IOP Table.
     83   */
     84
     85  rc = rtems_semaphore_create(
     86    RTEMS_LIBIO_SEM,
     87    1,
     88    RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
     89    RTEMS_NO_PRIORITY,
     90    &rtems_libio_semaphore
     91  );
     92  if ( rc != RTEMS_SUCCESSFUL )
     93    rtems_fatal_error_occurred( rc );
     94
     95  /*
     96   *  Initialize the base file system infrastructure.
     97   */
     98
     99  rtems_filesystem_initialize();
     100}
     101
     102/*
     103 *  rtems_libio_fcntl_flags
     104 *
     105 *  Convert UNIX fnctl(2) flags to ones that RTEMS drivers understand
     106 */
     107
     108rtems_assoc_t access_modes_assoc[] = {
     109  { "READ",       LIBIO_FLAGS_READ,  O_RDONLY },
     110  { "WRITE",      LIBIO_FLAGS_WRITE, O_WRONLY },
     111  { "READ/WRITE", LIBIO_FLAGS_READ_WRITE, O_RDWR },
     112  { 0, 0, 0 },
     113};
     114
     115rtems_assoc_t status_flags_assoc[] = {
     116  { "NO DELAY",  LIBIO_FLAGS_NO_DELAY,  O_NDELAY },
     117  { "APPEND",    LIBIO_FLAGS_APPEND,    O_APPEND },
     118  { "CREATE",    LIBIO_FLAGS_CREATE,    O_CREAT },
     119  { 0, 0, 0 },
     120};
     121
     122unsigned32 rtems_libio_fcntl_flags(
     123  unsigned32 fcntl_flags
     124)
     125{
     126  unsigned32 flags = 0;
     127  unsigned32 access_modes;
     128
     129  /*
     130   * Access mode is a small integer
     131   */
     132 
     133  access_modes = fcntl_flags & O_ACCMODE;
     134  fcntl_flags &= ~O_ACCMODE;
     135  flags = rtems_assoc_local_by_remote( access_modes_assoc, access_modes );
     136
     137  /*
     138   * Everything else is single bits
     139   */
     140
     141  flags |=
     142     rtems_assoc_local_by_remote_bitfield(status_flags_assoc, fcntl_flags);
     143  return flags;
     144}
     145
     146/*
     147 *  rtems_libio_allocate
     148 *
     149 *  This routine searches the IOP Table for an unused entry.  If it
     150 *  finds one, it returns it.  Otherwise, it returns NULL.
     151 */
     152
     153rtems_libio_t *rtems_libio_allocate( void )
     154{
     155  rtems_libio_t *iop;
     156  rtems_status_code rc;
     157 
     158  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     159
     160  for (iop = rtems_libio_iops; iop <= rtems_libio_last_iop; iop++)
     161    if ((iop->flags & LIBIO_FLAGS_OPEN) == 0) {
     162      /*
     163       *  Got an IOP -- create a semaphore for it.
     164       */
     165
     166      rc = rtems_semaphore_create(
     167        RTEMS_LIBIO_IOP_SEM(iop - rtems_libio_iops),
     168        1,
     169        RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
     170        RTEMS_NO_PRIORITY,
     171        &iop->sem
     172      );
     173      if ( rc != RTEMS_SUCCESSFUL )
     174        goto failed;
     175   
     176      iop->flags = LIBIO_FLAGS_OPEN;
     177      goto done;
     178  }
     179 
     180failed:
     181  iop = 0;
     182 
     183done:
     184  rtems_semaphore_release( rtems_libio_semaphore );
     185  return iop;
     186}
     187
     188/*
     189 *  rtems_libio_free
     190 *
     191 *  This routine frees the resources associated with an IOP (file descriptor)
     192 *  and clears the slot in the IOP Table.
     193 */
     194
     195void rtems_libio_free(
     196  rtems_libio_t *iop
     197)
     198{
     199  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     200
     201  if (iop->sem)
     202    rtems_semaphore_delete(iop->sem);
     203
     204  (void) memset(iop, 0, sizeof(*iop));
     205
     206  rtems_semaphore_release( rtems_libio_semaphore );
     207}
     208
     209/*
     210 *  rtems_libio_is_open_files_in_fs
     211 *
     212 *  This routine scans the entire file descriptor table to determine if the
     213 *  are any active file descriptors that refer to the atleast one node in the
     214 *  file system that we are trying to dismount.
     215 *
     216 *  If there is at least one node in the file system referenced by the mount
     217 *  table entry a 1 is returned, otherwise a 0 is returned.
     218 */
     219
     220int rtems_libio_is_open_files_in_fs(
     221  rtems_filesystem_mount_table_entry_t * fs_mt_entry
     222)
     223{
     224  rtems_libio_t     *iop;
     225  int                result = 0;
     226
     227  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     228
     229  /*
     230   *  Look for any active file descriptor entry.
     231   */
     232
     233  for ( iop=rtems_libio_iops ; iop <= rtems_libio_last_iop ; iop++ ) {
     234
     235    if ((iop->flags & LIBIO_FLAGS_OPEN) != 0) {
     236
     237       /*
     238        *  Check if this node is under the file system that we
     239        *  are trying to dismount.
     240        */
     241
     242       if ( iop->pathinfo.mt_entry == fs_mt_entry ) {
     243          result = 1;
     244          break;
     245       }
    121246    }
    122 
    123     rc = rtems_semaphore_create(
    124       RTEMS_LIBIO_SEM,
    125       1,
    126       RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
    127       RTEMS_NO_PRIORITY,
    128       &rtems_libio_semaphore
    129     );
    130     if (rc != RTEMS_SUCCESSFUL)
    131         rtems_fatal_error_occurred(rc);
    132 }
    133 
    134 /*
    135  * Convert RTEMS status to a UNIX errno
    136  */
    137 
    138 rtems_assoc_t errno_assoc[] = {
    139     { "OK",                 RTEMS_SUCCESSFUL,                0 },
    140     { "BUSY",               RTEMS_RESOURCE_IN_USE,           EBUSY },
    141     { "INVALID NAME",       RTEMS_INVALID_NAME,              EINVAL },
    142     { "NOT IMPLEMENTED",    RTEMS_NOT_IMPLEMENTED,           ENOSYS },
    143     { "TIMEOUT",            RTEMS_TIMEOUT,                   ETIMEDOUT },
    144     { "NO MEMORY",          RTEMS_NO_MEMORY,                 ENOMEM },
    145     { "NO DEVICE",          RTEMS_UNSATISFIED,               ENODEV },
    146     { "INVALID NUMBER",     RTEMS_INVALID_NUMBER,            EBADF},
    147     { "NOT RESOURCE OWNER", RTEMS_NOT_OWNER_OF_RESOURCE,     EPERM},
    148     { "IO ERROR",           RTEMS_IO_ERROR,                  EIO},
    149     { 0, 0, 0 },
    150 };
    151 
    152 static unsigned32
    153 rtems_libio_errno(rtems_status_code code)
    154 {
    155     int rc;
    156    
    157     if ((rc = rtems_assoc_remote_by_local(errno_assoc, (unsigned32) code)))
    158     {
    159         errno = rc;
    160         return -1;
     247  }
     248
     249  rtems_semaphore_release( rtems_libio_semaphore );
     250
     251  return result;
     252}
     253
     254/*
     255 *  rtems_libio_is_file_open
     256 *
     257 *  This routine scans the entire file descriptor table to determine if the
     258 *  given file refers to an active file descriptor.
     259 *
     260 *  If the given file is open a 1 is returned, otherwise a 0 is returned.
     261 */
     262
     263int rtems_libio_is_file_open(
     264  void         *node_access
     265)
     266{
     267  rtems_libio_t     *iop;
     268  int                result=0;
     269
     270  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     271
     272  /*
     273   *  Look for any active file descriptor entry.
     274   */
     275
     276  for ( iop=rtems_libio_iops ; iop <= rtems_libio_last_iop ; iop++ ) {
     277
     278    if ((iop->flags & LIBIO_FLAGS_OPEN) != 0) {
     279
     280       /*
     281        *  Check if this node is under the file system that we
     282        *  are trying to dismount.
     283        */
     284
     285       if ( iop->pathinfo.node_access == node_access ) {
     286          result = 1;
     287          break;
     288       }
    161289    }
    162     return -1;
    163 }
    164 
    165 /*
    166  * Convert UNIX fnctl(2) flags to ones that RTEMS drivers understand
    167  */
    168 
    169 rtems_assoc_t access_modes_assoc[] = {
    170     { "READ",       LIBIO_FLAGS_READ,  O_RDONLY },
    171     { "WRITE",      LIBIO_FLAGS_WRITE, O_WRONLY },
    172     { "READ/WRITE", LIBIO_FLAGS_READ_WRITE, O_RDWR },
    173     { 0, 0, 0 },
    174 };
    175 
    176 rtems_assoc_t status_flags_assoc[] = {
    177     { "NO DELAY",  LIBIO_FLAGS_NO_DELAY,  O_NDELAY },
    178     { "APPEND",    LIBIO_FLAGS_APPEND,    O_APPEND },
    179     { "CREATE",    LIBIO_FLAGS_CREATE,    O_CREAT },
    180     { 0, 0, 0 },
    181 };
    182 
    183 static unsigned32
    184 rtems_libio_fcntl_flags(unsigned32 fcntl_flags)
    185 {
    186     unsigned32 flags = 0;
    187     unsigned32 access_modes;
    188 
    189     /*
    190      * Access mode is a small integer
    191      */
    192    
    193     access_modes = fcntl_flags & O_ACCMODE;
    194     fcntl_flags &= ~O_ACCMODE;
    195     flags = rtems_assoc_local_by_remote(access_modes_assoc, access_modes);
    196 
    197     /*
    198      * Everything else is single bits
    199      */
    200 
    201     flags |= rtems_assoc_local_by_remote_bitfield(status_flags_assoc, fcntl_flags);
    202     return flags;
    203 }
    204 
    205 
    206 static rtems_libio_t *
    207 rtems_libio_allocate(void)
    208 {
    209     rtems_libio_t *iop;
    210     rtems_status_code rc;
    211    
    212     rtems_semaphore_obtain(rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
    213 
    214     for (iop = rtems_libio_iops; iop <= rtems_libio_last_iop; iop++)
    215         if ((iop->flags & LIBIO_FLAGS_OPEN) == 0)
    216         {
    217             /*
    218              * Got one; create a semaphore for it
    219              */
    220 
    221             rc = rtems_semaphore_create(
    222               RTEMS_LIBIO_IOP_SEM(iop - rtems_libio_iops),
    223               1,
    224               RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
    225               RTEMS_NO_PRIORITY,
    226               &iop->sem
    227             );
    228             if (rc != RTEMS_SUCCESSFUL)
    229                 goto failed;
    230            
    231             iop->flags = LIBIO_FLAGS_OPEN;
    232             goto done;
    233         }
    234    
    235 failed:
    236     iop = 0;
    237    
    238 done:
    239     rtems_semaphore_release(rtems_libio_semaphore);
    240     return iop;
    241 }
    242 
    243 static void
    244 rtems_libio_free(rtems_libio_t *iop)
    245 {
    246     rtems_semaphore_obtain(rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
    247 
    248     if (iop->sem)
    249         rtems_semaphore_delete(iop->sem);
    250     (void) memset(iop, 0, sizeof(*iop));
    251 
    252     rtems_semaphore_release(rtems_libio_semaphore);
    253 }
    254 
    255 int
    256 __rtems_open(
    257     const char   *pathname,
    258     unsigned32    flag,
    259     unsigned32    mode)
    260 {
    261     rtems_status_code rc;
    262     rtems_libio_t *iop = 0;
    263     rtems_driver_name_t *np;
    264     rtems_libio_open_close_args_t args;
    265 
    266     /*
    267      * Additional external I/O handlers would be supported by
    268      * adding code to pick apart the pathname appropriately.
    269      * The networking code does not require changes here since
    270      * network file descriptors are obtained using socket(), not
    271      * open().
    272      */
    273 
    274     if ((rc = rtems_io_lookup_name(pathname, &np)) != RTEMS_SUCCESSFUL)
    275         goto done;
    276 
    277     iop = rtems_libio_allocate();
    278     if (iop == 0)
    279     {
    280         rc = RTEMS_TOO_MANY;
    281         goto done;
    282     }
    283    
    284     iop->driver = np;
    285     iop->pathname = (char *) pathname;
    286     iop->flags |= rtems_libio_fcntl_flags(flag);
    287 
    288     args.iop = iop;
    289     args.flags = iop->flags;
    290     args.mode = mode;
    291 
    292     rc = rtems_io_open(np->major, np->minor, (void *) &args);
    293    
    294 done:
    295  
    296     if (rc != RTEMS_SUCCESSFUL)
    297     {
    298         if (iop)
    299             rtems_libio_free(iop);
    300         return rtems_libio_errno(rc);
    301     }
    302    
    303     return iop - rtems_libio_iops;
    304 }
    305    
    306 int
    307 __rtems_close(
    308     int  fd
    309   )   
    310 {
    311     rtems_status_code rc;
    312     rtems_driver_name_t *np;
    313     rtems_libio_t *iop;
    314     rtems_libio_open_close_args_t args;
    315     int status;
    316 
    317     if (rtems_file_descriptor_type(fd)) {
    318         int (*fp)(int fd);
    319 
    320         fp = handlers[rtems_file_descriptor_type_index(fd)].close;
    321         if (fp == NULL) {
    322             errno = EBADF;
    323             return -1;
    324         }
    325         status = (*fp)(fd);
    326         return status;
    327     }
    328     iop = rtems_libio_iop(fd);
    329     rtems_libio_check_fd(fd);
    330 
    331     np = iop->driver;
    332 
    333     args.iop = iop;
    334     args.flags = 0;
    335     args.mode = 0;
    336    
    337     rc = rtems_io_close(np->major, np->minor, (void *) &args);
    338 
    339     rtems_libio_free(iop);
    340 
    341     if (rc != RTEMS_SUCCESSFUL)
    342         return rtems_libio_errno(rc);
    343     return 0;
    344 }
    345    
    346 int
    347 __rtems_read(
    348     int       fd,
    349     void *    buffer,
    350     unsigned32 count
    351   )
    352 {
    353     rtems_status_code rc;
    354     rtems_driver_name_t *np;
    355     rtems_libio_t *iop;
    356     rtems_libio_rw_args_t args;
    357 
    358     if (rtems_file_descriptor_type(fd)) {
    359         int (*fp)(int fd, void *buffer, unsigned32 count);
    360 
    361         fp = handlers[rtems_file_descriptor_type_index(fd)].read;
    362         if (fp == NULL) {
    363             errno = EBADF;
    364             return -1;
    365         }
    366         return (*fp)(fd, buffer, count);
    367     }
    368     iop = rtems_libio_iop(fd);
    369     rtems_libio_check_fd(fd);
    370     rtems_libio_check_buffer(buffer);
    371     rtems_libio_check_count(count);
    372     rtems_libio_check_permissions(iop, LIBIO_FLAGS_READ);
    373 
    374     np = iop->driver;
    375 
    376     args.iop = iop;
    377     args.offset = iop->offset;
    378     args.buffer = buffer;
    379     args.count = count;
    380     args.flags = iop->flags;
    381     args.bytes_moved = 0;
    382 
    383     rc = rtems_io_read(np->major, np->minor, (void *) &args);
    384 
    385     iop->offset += args.bytes_moved;
    386 
    387     if (rc != RTEMS_SUCCESSFUL)
    388         return rtems_libio_errno(rc);
    389 
    390     return args.bytes_moved;
    391 }
    392 
    393 int
    394 __rtems_write(
    395     int         fd,
    396     const void *buffer,
    397     unsigned32  count
    398   )
    399 {
    400     rtems_status_code rc;
    401     rtems_driver_name_t *np;
    402     rtems_libio_t *iop;
    403     rtems_libio_rw_args_t args;
    404 
    405     if (rtems_file_descriptor_type(fd)) {
    406         int (*fp)(int fd, const void *buffer, unsigned32 count);
    407 
    408         fp = handlers[rtems_file_descriptor_type_index(fd)].write;
    409         if (fp == NULL) {
    410             errno = EBADF;
    411             return -1;
    412         }
    413         return (*fp)(fd, buffer, count);
    414     }
    415     iop = rtems_libio_iop(fd);
    416     rtems_libio_check_fd(fd);
    417     rtems_libio_check_buffer(buffer);
    418     rtems_libio_check_count(count);
    419     rtems_libio_check_permissions(iop, LIBIO_FLAGS_WRITE);
    420 
    421     np = iop->driver;
    422 
    423     args.iop = iop;
    424     args.offset = iop->offset;
    425     args.buffer = (void *) buffer;
    426     args.count = count;
    427     args.flags = iop->flags;
    428     args.bytes_moved = 0;
    429 
    430     rc = rtems_io_write(np->major, np->minor, (void *) &args);
    431 
    432     iop->offset += args.bytes_moved;
    433 
    434     if (rc != RTEMS_SUCCESSFUL)
    435         return rtems_libio_errno(rc);
    436 
    437     return args.bytes_moved;
    438 }
    439 
    440 int
    441 __rtems_ioctl(
    442     int         fd,
    443     unsigned32  command,
    444     void *      buffer)
    445 {
    446     rtems_status_code rc;
    447     rtems_driver_name_t *np;
    448     rtems_libio_t *iop;
    449     rtems_libio_ioctl_args_t args;
    450 
    451     if (rtems_file_descriptor_type(fd)) {
    452         int (*fp)(int fd, unsigned32 command, void *buffer);
    453 
    454         fp = handlers[rtems_file_descriptor_type_index(fd)].ioctl;
    455         if (fp == NULL) {
    456             errno = EBADF;
    457             return -1;
    458         }
    459         return (*fp)(fd, command, buffer);
    460     }
    461     iop = rtems_libio_iop(fd);
    462     rtems_libio_check_fd(fd);
    463 
    464     np = iop->driver;
    465 
    466     args.iop = iop;
    467     args.command = command;
    468     args.buffer = buffer;
    469 
    470     rc = rtems_io_control(np->major, np->minor, (void *) &args);
    471 
    472     if (rc != RTEMS_SUCCESSFUL)
    473         return rtems_libio_errno(rc);
    474 
    475     return args.ioctl_return;
    476 }
    477    
    478 /*
    479  * internal only??
    480  */
    481 
    482 
    483 int
    484 __rtems_lseek(
    485     int                  fd,
    486     rtems_libio_offset_t offset,
    487     int                  whence
    488   )   
    489 {
    490     rtems_libio_t *iop;
    491 
    492     if (rtems_file_descriptor_type(fd)) {
    493         int (*fp)(int fd, rtems_libio_offset_t offset, int whence);
    494 
    495         fp = handlers[rtems_file_descriptor_type_index(fd)].lseek;
    496         if (fp == NULL) {
    497             errno = EBADF;
    498             return -1;
    499         }
    500         return (*fp)(fd, offset, whence);
    501     }
    502     iop = rtems_libio_iop(fd);
    503     rtems_libio_check_fd(fd);
    504 
    505     switch (whence)
    506     {
    507         case SEEK_SET:
    508             iop->offset = offset;
    509             break;
    510 
    511         case SEEK_CUR:
    512             iop->offset += offset;
    513             break;
    514 
    515         case SEEK_END:
    516             iop->offset = iop->size - offset;
    517             break;
    518 
    519         default:
    520             errno = EINVAL;
    521             return -1;
    522     }
    523     return 0;
    524 }
     290  }
     291
     292  rtems_semaphore_release( rtems_libio_semaphore );
     293
     294  return result;
     295}

  • c/src/exec/libcsupport/src/malloc.c

    rcd3fb80 r07a3253d  
    136136#ifdef MALLOC_STATS
    137137  /* zero all the stats */
    138   (void) memset(&rtems_malloc_stats, 0, sizeof(rtems_malloc_stats));
     138  (void) memset( &rtems_malloc_stats, 0, sizeof(rtems_malloc_stats) );
    139139#endif
    140140 
    … …  
    221221      unsigned32 actual_size;
    222222      unsigned32 current_depth;
    223       status = rtems_region_get_segment_size(RTEMS_Malloc_Heap, return_this, &actual_size);
     223      status = rtems_region_get_segment_size(
     224                   RTEMS_Malloc_Heap, return_this, &actual_size);
    224225      MSBUMP(lifetime_allocated, actual_size);
    225       current_depth = rtems_malloc_stats.lifetime_allocated - rtems_malloc_stats.lifetime_freed;
     226      current_depth = rtems_malloc_stats.lifetime_allocated -
     227                   rtems_malloc_stats.lifetime_freed;
    226228      if (current_depth > rtems_malloc_stats.max_depth)
    227229          rtems_malloc_stats.max_depth = current_depth;
    … …  
    336338void malloc_dump(void)
    337339{
    338     unsigned32 allocated = rtems_malloc_stats.lifetime_allocated - rtems_malloc_stats.lifetime_freed;
     340    unsigned32 allocated = rtems_malloc_stats.lifetime_allocated -
     341                     rtems_malloc_stats.lifetime_freed;
    339342
    340343    printf("Malloc stats\n");
    341     printf("  avail:%uk  allocated:%uk (%d%%) max:%uk (%d%%) lifetime:%Luk freed:%Luk\n",
     344    printf("  avail:%uk  allocated:%uk (%d%%) "
     345              "max:%uk (%d%%) lifetime:%Luk freed:%Luk\n",
    342346           (unsigned int) rtems_malloc_stats.space_available / 1024,
    343347           (unsigned int) allocated / 1024,

  • c/src/exec/libcsupport/src/newlibc.c

    rcd3fb80 r07a3253d  
    1 
    2 /*
     1/*
     2 *  Implementation of hooks for the CYGNUS newlib libc
     3 *  These hooks set things up so that:
     4 *       + '_REENT' is switched at task switch time.
     5 *
    36 *  COPYRIGHT (c) 1994 by Division Incorporated
    47 *
    … …  
    69 *  found in the file LICENSE in this distribution or at
    710 *  http://www.OARcorp.com/rtems/license.html.
    8  *
    9  *  Description:
    10  *      Implementation of hooks for the CYGNUS newlib libc
    11  *      These hooks set things up so that:
    12  *              '_REENT' is switched at task switch time.
    13  *
    14  *
    15  *  TODO:
    16  *
    17  *  NOTE:
    1811 *
    1912 *  $Id$
    … …  
    4841#endif
    4942
    50 #include "internal.h"
     43/*
     44 *  Private routines
     45 */
     46
     47void MY_task_set_note(
     48  rtems_tcb        *tcb,
     49  rtems_unsigned32 notepad,
     50  rtems_unsigned32 note
     51);
     52
     53rtems_unsigned32 MY_task_get_note(
     54  rtems_tcb        *tcb,
     55  rtems_unsigned32  notepad
     56);
     57
    5158
    5259#define LIBC_NOTEPAD RTEMS_NOTEPAD_LAST
    … …  
    305312                              &libc_extension, &extension_id);
    306313        if (rc != RTEMS_SUCCESSFUL)
    307             rtems_fatal_error_occurred(rc);
     314            rtems_fatal_error_occurred( rc );
    308315
    309316        libc_reentrant = reentrant;
    … …  
    354361/* #if !defined(RTEMS_UNIX) && !defined(__GO32__) && !defined(_AM29K) */
    355362#if !defined(RTEMS_UNIX) && !defined(_AM29K)
     363#if !defined(pc386)
    356364void _exit(int status)
    357365{
    … …  
    359367    rtems_shutdown_executive(status);
    360368}
     369#endif
     370
    361371#else
    362372
    … …  
    427437
    428438
    429 #endif
     439/*
     440 *  Newlib Interface Support
     441 *
     442 *  Routines to Access Internal RTEMS Resources without violating
     443 *  kernel visibility.
     444 *
     445 */
     446
     447void MY_task_set_note(
     448  Thread_Control *the_thread,
     449  unsigned32      notepad,
     450  unsigned32      note
     451)
     452{
     453  RTEMS_API_Control    *api;
     454 
     455  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
     456
     457  if ( api )
     458    api->Notepads[ notepad ] = note;
     459}
     460
     461
     462unsigned32 MY_task_get_note(
     463  Thread_Control *the_thread,
     464  unsigned32      notepad
     465)
     466{
     467  RTEMS_API_Control    *api;
     468 
     469  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
     470
     471  return api->Notepads[ notepad ];
     472}
     473
     474void *MY_CPU_Context_FP_start(
     475  void       *base,
     476  unsigned32  offset
     477)
     478{
     479  return _CPU_Context_Fp_start( base, offset );
     480}
     481#endif

  • c/src/exec/libcsupport/src/no_libc.c

    rcd3fb80 r07a3253d  
    1 
    2 /*  no_libc.h
    3  *
     1/*
    42 *  This file contains stubs for the reentrancy hooks when
    53 *  an unknown C library is used.
    … …  
    1816
    1917#include <rtems.h>
    20 #if  !defined(RTEMS_NEWLIB) && !defined(RTEMS_UNIX)
     18#if !defined(RTEMS_NEWLIB) && !defined(RTEMS_UNIX)
    2119
    2220#include "libcsupport.h"
    23 #include "internal.h"
    2421
    2522#include <stdlib.h>             /* for free() */
    2623
    27 void
    28 libc_init(int reentrant)
     24void libc_init(
     25  int reentrant
     26)
    2927{
    3028}
    … …  
    3533
    3634
    37 void libc_global_exit(rtems_unsigned32 code)
     35void libc_global_exit(
     36  rtems_unsigned32 code
     37)
    3838{
    3939}
    4040
    41 void _exit(int status)
     41void _exit(
     42  int status
     43)
    4244{
    4345}

  • c/src/exec/libcsupport/src/opendir.c

    rcd3fb80 r07a3253d  
    22 *  opendir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
    537 */
     38
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)opendir.c   5.11 (Berkeley) 2/23/91";
     41#endif /* LIBC_SCCS and not lint */
    642
    743#include <dirent.h>
    … …  
    1046#include <unistd.h>
    1147
    12 DIR *opendir(
    13   const char *name
    14 )
     48/*
     49 * open a directory.
     50 */
     51DIR *
     52opendir(name)
     53        const char *name;
    1554{
    16   return NULL;
     55        register DIR *dirp;
     56        register int fd;
     57
     58        if ((fd = open(name, 0)) == -1)
     59                return NULL;
     60        if (fcntl(fd, F_SETFD, 1) == -1 ||
     61            (dirp = (DIR *)malloc(sizeof(DIR))) == NULL) {
     62                close (fd);
     63                return NULL;
     64        }
     65        /*
     66         * If CLSIZE is an exact multiple of DIRBLKSIZ, use a CLSIZE
     67         * buffer that it cluster boundary aligned.
     68         * Hopefully this can be a big win someday by allowing page trades
     69         * to user space to be done by getdirentries()
     70         */
     71        dirp->dd_buf = malloc (512);
     72        dirp->dd_len = 512;
     73
     74        if (dirp->dd_buf == NULL) {
     75                close (fd);
     76                return NULL;
     77        }
     78        dirp->dd_fd = fd;
     79        dirp->dd_loc = 0;
     80        dirp->dd_seek = 0;
     81        /*
     82         * Set up seek point for rewinddir.
     83         */
     84        return dirp;
    1785}

  • c/src/exec/libcsupport/src/readdir.c

    rcd3fb80 r07a3253d  
    22 *  readdir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
    537 */
     38
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)readdir.c   5.7 (Berkeley) 6/1/90";
     41#endif /* LIBC_SCCS and not lint */
    642
    743#include <dirent.h>
    844
    9 struct dirent *readdir(
    10   register DIR *dirp
    11 )
    12 {
    13   return NULL;
     45/*
     46 * get next entry in a directory.
     47 */
     48struct dirent *
     49readdir(dirp)
     50register DIR *dirp; {
     51  register struct dirent *dp;
     52 
     53  for (;;) {
     54    if (dirp->dd_loc == 0) {
     55      dirp->dd_size = getdents (dirp->dd_fd,
     56                                dirp->dd_buf,
     57                                dirp->dd_len);
     58     
     59      if (dirp->dd_size <= 0)
     60        return NULL;
     61    }
     62    if (dirp->dd_loc >= dirp->dd_size) {
     63      dirp->dd_loc = 0;
     64      continue;
     65    }
     66    dp = (struct dirent *)(dirp->dd_buf + dirp->dd_loc);
     67    if ((int)dp & 03)   /* bogus pointer check */
     68      return NULL;
     69    if (dp->d_reclen <= 0 ||
     70        dp->d_reclen > dirp->dd_len + 1 - dirp->dd_loc)
     71      return NULL;
     72    dirp->dd_loc += dp->d_reclen;
     73    if (dp->d_ino == 0)
     74      continue;
     75    return (dp);
     76  }
    1477}

  • c/src/exec/libcsupport/src/rewinddir.c

    rcd3fb80 r07a3253d  
    22 *  rewinddir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  COPYRIGHT (c) 1989-1998.
     5 *  On-Line Applications Research Corporation (OAR).
     6 *  Copyright assigned to U.S. Government, 1994.
     7 *
     8 *  The license and distribution terms for this file may be
     9 *  found in the file LICENSE in this distribution or at
     10 *  http://www.OARcorp.com/rtems/license.html.
     11 *
    512 */
    613
    … …  
    1623)
    1724{
    18   errno = ENOSYS;
    19   return -1;
     25  off_t status;
     26
     27  status = lseek( dirp->dd_fd, 0, SEEK_SET );
     28 
     29  if( status == -1 )
     30    return;
     31
     32  dirp->dd_loc = 0;
     33
     34
    2035}

  • c/src/exec/libcsupport/src/scandir.c

    rcd3fb80 r07a3253d  
    22 *  scandir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
     37 */
     38
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)scandir.c   5.10 (Berkeley) 2/23/91";
     41#endif /* LIBC_SCCS and not lint */
     42
     43/*
     44 * Scan the directory dirname calling select to make a list of selected
     45 * directory entries then sort using qsort and compare routine dcomp.
     46 * Returns the number of entries and a pointer to a list of pointers to
     47 * struct dirent (through namelist). Returns -1 if there were any errors.
    548 */
    649
    … …  
    1053#include <stdlib.h>
    1154#include <string.h>
    12 #include <errno.h>
    1355
    14 int scandir(
    15   const char      *dirname,
    16   struct dirent ***namelist,
    17   int             (*select)(struct dirent *),
    18   int             (*dcomp)(const void *, const void *)
    19 )
     56/*
     57 * The DIRSIZ macro gives the minimum record length which will hold
     58 * the directory entry.  This requires the amount of space in struct dirent
     59 * without the d_name field, plus enough space for the name with a terminating
     60 * null byte (dp->d_namlen+1), rounded up to a 4 byte boundary.
     61 */
     62#undef DIRSIZ
     63/*
     64#define DIRSIZ(dp) \
     65    ((sizeof (struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
     66*/
     67
     68#define DIRSIZ(dp) \
     69    ((sizeof (struct dirent) - (NAME_MAX+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
     70
     71#ifndef __P
     72#define __P(args) ()
     73#endif
     74
     75int
     76scandir(dirname, namelist, select, dcomp)
     77        const char *dirname;
     78        struct dirent ***namelist;
     79        int (*select) __P((struct dirent *));
     80        int (*dcomp) __P((const void *, const void *));
    2081{
    21   errno = ENOSYS;
    22   return -1;
     82        register struct dirent *d, *p, **names;
     83        register size_t nitems;
     84        struct stat stb;
     85        long arraysz;
     86        DIR *dirp;
     87
     88        if ((dirp = opendir(dirname)) == NULL)
     89                return(-1);
     90        if (fstat(dirp->dd_fd, &stb) < 0)
     91                return(-1);
     92
     93        /*
     94         * estimate the array size by taking the size of the directory file
     95         * and dividing it by a multiple of the minimum size entry.
     96         */
     97        arraysz = (stb.st_size / 24);
     98        names = (struct dirent **)malloc(arraysz * sizeof(struct dirent *));
     99        if (names == NULL)
     100                return(-1);
     101
     102        nitems = 0;
     103        while ((d = readdir(dirp)) != NULL) {
     104                if (select != NULL && !(*select)(d))
     105                        continue;       /* just selected names */
     106                /*
     107                 * Make a minimum size copy of the data
     108                 */
     109                p = (struct dirent *)malloc(DIRSIZ(d));
     110                if (p == NULL)
     111                        return(-1);
     112                p->d_ino = d->d_ino;
     113                p->d_reclen = d->d_reclen;
     114                p->d_namlen = d->d_namlen;
     115                bcopy(d->d_name, p->d_name, p->d_namlen + 1);
     116                /*
     117                 * Check to make sure the array has space left and
     118                 * realloc the maximum size.
     119                 */
     120                if (++nitems >= arraysz) {
     121                        if (fstat(dirp->dd_fd, &stb) < 0)
     122                                return(-1);     /* just might have grown */
     123                        arraysz = stb.st_size / 12;
     124                        names = (struct dirent **)realloc((char *)names,
     125                                arraysz * sizeof(struct dirent *));
     126                        if (names == NULL)
     127                                return(-1);
     128                }
     129                names[nitems-1] = p;
     130        }
     131        closedir(dirp);
     132        if (nitems && dcomp != NULL){
     133                qsort(names, nitems, sizeof(struct dirent *), dcomp);
     134        }
     135        *namelist = names;
     136        return(nitems);
    23137}
     138
     139/*
     140 * Alphabetic order comparison routine for those who want it.
     141 */
     142int
     143alphasort(d1, d2)
     144        const void *d1;
     145        const void *d2;
     146{
     147        return(strcmp((*(struct dirent **)d1)->d_name,
     148            (*(struct dirent **)d2)->d_name));
     149}

  • c/src/exec/libcsupport/src/seekdir.c

    rcd3fb80 r07a3253d  
    22 *  seekdir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  COPYRIGHT (c) 1989-1998.
     5 *  On-Line Applications Research Corporation (OAR).
     6 *  Copyright assigned to U.S. Government, 1994.
     7 *
     8 *  The license and distribution terms for this file may be
     9 *  found in the file LICENSE in this distribution or at
     10 *  http://www.OARcorp.com/rtems/license.html.
     11 *
    512 */
    613
    … …  
    1320
    1421void seekdir(
    15   DIR  *dirp,
    16   long  loc
     22   DIR  *dirp,
     23   long  loc
    1724)
    1825{
    19   errno = ENOSYS;
    20   return -1;
     26  off_t status;
     27
     28  status = lseek( dirp->dd_fd, loc, SEEK_SET );
     29
     30  /*
     31   * This is not a nice way to error out, but we have no choice here.
     32   */
     33  if( status == -1 )
     34    return;
     35
     36  dirp->dd_loc = 0;
     37
    2138}

  • c/src/exec/libcsupport/src/tcdrain.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  This file contains the RTEMS implementation of the POSIX API
    3  *  routines tcdrain.
     2 *  tcdrain() - POSIX 1003.1b 7.2.2 - Line Control Functions
     3 *
     4 *  COPYRIGHT (c) 1989-1998.
     5 *  On-Line Applications Research Corporation (OAR).
     6 *  Copyright assigned to U.S. Government, 1994.
     7 *
     8 *  The license and distribution terms for this file may be
     9 *  found in the file LICENSE in this distribution or at
     10 *  http://www.OARcorp.com/rtems/license.html.
    411 *
    512 *  $Id$
    6  *
    713 */
    814
    … …  
    1420#include <errno.h>
    1521#include <termios.h>
     22#include <sys/ioctl.h>
    1623
    17 #include "internal.h"
    1824#include "libio.h"
    1925
    20 int
    21 tcdrain(int fd)
     26int tcdrain(
     27  int fd
     28)
    2229{
    23         return __rtems_ioctl(fd,RTEMS_IO_TCDRAIN,0);
     30  return ioctl( fd, RTEMS_IO_TCDRAIN, 0 );
    2431}
    2532

  • c/src/exec/libcsupport/src/telldir.c

    rcd3fb80 r07a3253d  
    22 *  telldir() - XXX
    33 *
    4  *  $Id$
     4 *  COPYRIGHT (c) 1989-1998.
     5 *  On-Line Applications Research Corporation (OAR).
     6 *  Copyright assigned to U.S. Government, 1994.
     7 *
     8 *  The license and distribution terms for this file may be
     9 *  found in the file LICENSE in this distribution or at
     10 *  http://www.OARcorp.com/rtems/license.html.
     11 *
    512 */
    613
    … …  
    1017#include <stdlib.h>
    1118#include <unistd.h>
    12 #include <errno.h>
    1319
    14 #include <rtems.h>
    15 #include "libio.h"
     20#include "libio_.h"
     21
    1622
    1723long telldir(
    … …  
    1925)
    2026{
    21   errno = ENOSYS;
    22   return -1;
     27  rtems_libio_t  *iop;
     28
     29  /*
     30   *  Get the file control block structure associated with the file descriptor
     31   */
     32
     33  iop = rtems_libio_iop( dirp->dd_fd );
     34
     35  if (iop == NULL)
     36     assert(0);
     37
     38  return (long)( iop->offset );
    2339}

  • c/src/exec/libcsupport/src/unixlibc.c

    rcd3fb80 r07a3253d  
    11/*
    22 *  $Id$
     3 *  UNIX Port C Library Support
     4 *
     5 *  COPYRIGHT (c) 1989-1998.
     6 *  On-Line Applications Research Corporation (OAR).
     7 *  Copyright assigned to U.S. Government, 1994.
     8 *
     9 *  The license and distribution terms for this file may be
     10 *  found in the file LICENSE in this distribution or at
     11 *  http://www.OARcorp.com/rtems/license.html.
     12 *
    313 */
    414

  • c/src/exec/posix/include/sys/Makefile.in

    rcd3fb80 r07a3253d  
    1010
    1111#H_PIECES=utsname
    12 H_PIECES=
     12H_PIECES=utime ioctl
    1313H_FILES=$(H_PIECES:%=$(srcdir)/%.h)
    1414

  • c/src/exec/posix/src/getpid.c

    rcd3fb80 r07a3253d  
    2121  return _Objects_Local_node;
    2222}
     23
     24/*
     25 *  _getpid_r
     26 *
     27 *  This is the Newlib dependent reentrant version of getpid().
     28 */
     29
     30#if defined(RTEMS_NEWLIB)
     31
     32#include <reent.h>
     33
     34pid_t _getpid_r(
     35  struct _reent *ptr
     36)
     37{
     38  return getpid();
     39}
     40#endif
     41

  • c/src/exec/posix/src/psignal.c

    rcd3fb80 r07a3253d  
    12231223
    12241224/*
     1225 *  _kill_r
     1226 *
     1227 *  This is the Newlib dependent reentrant version of kill().
     1228 */
     1229
     1230#if defined(RTEMS_NEWLIB)
     1231
     1232#include <reent.h>
     1233
     1234int _kill_r(
     1235  struct _reent *ptr,
     1236  pid_t          pid,
     1237  int            sig
     1238)
     1239{
     1240  return kill( pid, sig );
     1241}
     1242#endif
     1243
     1244/*
    12251245 *  3.3.9 Queue a Signal to a Process, P1003.1b-1993, p. 78
    12261246 */

  • c/src/exec/posix/sys/Makefile.in

    rcd3fb80 r07a3253d  
    1010
    1111#H_PIECES=utsname
    12 H_PIECES=
     12H_PIECES=utime ioctl
    1313H_FILES=$(H_PIECES:%=$(srcdir)/%.h)
    1414

  • c/src/exec/sapi/src/io.c

    rcd3fb80 r07a3253d  
    9393 */
    9494
     95#if 0
    9596rtems_status_code rtems_io_register_name(
    9697    char *device_name,
    … …  
    125126    return RTEMS_TOO_MANY;
    126127}
     128#endif
    127129
    128130/*PAGE
    … …  
    141143 */
    142144
     145#if 0
    143146rtems_status_code rtems_io_lookup_name(
    144147    const char           *name,
    … …  
    162165    return RTEMS_UNSATISFIED;
    163166}
     167#endif
    164168
    165169

  • c/src/lib/include/rtems/libio.h

    rcd3fb80 r07a3253d  
    11/*
    2  * General purpose communication channel for RTEMS to allow UNIX/POSIX
    3  *    system call behavior on top of RTEMS IO devices.
     2 *  System call and file system interface definition
    43 *
    5  * TODO
    6  *      stat(2)
    7  *      unlink(2)
    8  *      rename(2)
     4 *  General purpose communication channel for RTEMS to allow UNIX/POSIX
     5 *  system call behavior under RTEMS.  Initially this supported only
     6 *  IO to devices but has since been enhanced to support networking
     7 *  and support for mounted file systems.
     8 *
     9 *  COPYRIGHT (c) 1989-1998.
     10 *  On-Line Applications Research Corporation (OAR).
     11 *  Copyright assigned to U.S. Government, 1994.
     12 *
     13 *  The license and distribution terms for this file may be
     14 *  found in the file LICENSE in this distribution or at
     15 *  http://www.OARcorp.com/rtems/license.html.
    916 *
    1017 *  $Id$
    … …  
    1623#include <sys/stat.h>
    1724
    18 typedef unsigned32 rtems_libio_offset_t;
    19 
    20 /*
    21  * An open file data structure, indexed by 'fd'
    22  * TODO:
    23  *    should really have a separate per/file data structure that this
    24  *    points to (eg: size, offset, driver, pathname should be in that)
    25  */
    26 
    27 typedef struct {
    28     rtems_driver_name_t *driver;
    29     rtems_libio_offset_t size;          /* size of file */
    30     rtems_libio_offset_t offset;        /* current offset into the file */
    31     unsigned32           flags;
    32     char                *pathname;      /* opened pathname */
    33     Objects_Id           sem;
    34     unsigned32           data0;         /* private to "driver" */
    35     void                *data1;         /* ... */
    36 } rtems_libio_t;
    37 
    38 
    39 /*
    40  * param block for read/write
    41  * Note: it must include 'offset' instead of using iop's offset since
    42  *       we can have multiple outstanding i/o's on a device.
     25/*
     26 *  Define data types which must be constructed using forward references.
     27 */
     28
     29typedef struct rtems_libio_tt rtems_libio_t;
     30
     31struct rtems_filesystem_location_info_tt;
     32typedef struct rtems_filesystem_location_info_tt
     33    rtems_filesystem_location_info_t;
     34
     35struct rtems_filesystem_mount_table_entry_tt;
     36typedef struct rtems_filesystem_mount_table_entry_tt
     37    rtems_filesystem_mount_table_entry_t;
     38
     39/*
     40 * Valid RTEMS file types.
     41 */
     42typedef enum {
     43  RTEMS_FILESYSTEM_DIRECTORY,
     44  RTEMS_FILESYSTEM_DEVICE,
     45  RTEMS_FILESYSTEM_HARD_LINK,
     46  RTEMS_FILESYSTEM_SYM_LINK,
     47  RTEMS_FILESYSTEM_MEMORY_FILE
     48} rtems_filesystem_node_types_t;
     49
     50/*
     51 *  File Handler Operations Table
     52 */
     53
     54typedef int (*rtems_filesystem_open_t)(
     55  rtems_libio_t *iop,
     56  const char    *pathname,
     57  unsigned32     flag,
     58  unsigned32     mode
     59);
     60
     61typedef int (*rtems_filesystem_close_t)(
     62  rtems_libio_t *iop
     63);
     64
     65typedef int (*rtems_filesystem_read_t)(
     66  rtems_libio_t *iop,
     67  void          *buffer,
     68  unsigned32     count
     69);
     70
     71typedef int (*rtems_filesystem_write_t)(
     72  rtems_libio_t *iop,
     73  const void    *buffer,
     74  unsigned32    count
     75);
     76
     77typedef int (*rtems_filesystem_ioctl_t)(
     78  rtems_libio_t *iop,
     79  unsigned32     command,
     80  void          *buffer
     81);
     82
     83typedef int (*rtems_filesystem_lseek_t)(
     84  rtems_libio_t *iop,
     85  off_t          length,
     86  int            whence
     87);
     88
     89typedef int (*rtems_filesystem_fstat_t)(
     90  rtems_filesystem_location_info_t *loc,
     91  struct stat                      *buf
     92);
     93
     94typedef int (*rtems_filesystem_fchmod_t)(
     95  rtems_filesystem_location_info_t *loc,
     96  mode_t                            mode
     97);
     98
     99typedef int (*rtems_filesystem_ftruncate_t)(
     100  rtems_libio_t *iop,
     101  off_t          length
     102);
     103
     104typedef int (*rtems_filesystem_fpathconf_t)(
     105  rtems_libio_t *iop,
     106  int name
     107);
     108
     109typedef int (*rtems_filesystem_fsync_t)(
     110  rtems_libio_t *iop
     111);
     112
     113typedef int (*rtems_filesystem_fdatasync_t)(
     114  rtems_libio_t *iop
     115);
     116
     117typedef struct {
     118    rtems_filesystem_open_t         open;
     119    rtems_filesystem_close_t        close;
     120    rtems_filesystem_read_t         read;
     121    rtems_filesystem_write_t        write;
     122    rtems_filesystem_ioctl_t        ioctl;
     123    rtems_filesystem_lseek_t        lseek;
     124    rtems_filesystem_fstat_t        fstat;
     125    rtems_filesystem_fchmod_t       fchmod;
     126    rtems_filesystem_ftruncate_t    ftruncate;
     127    rtems_filesystem_fpathconf_t    fpathconf;
     128    rtems_filesystem_fsync_t        fsync;
     129    rtems_filesystem_fdatasync_t    fdatasync;
     130} rtems_filesystem_file_handlers_r;
     131
     132/*
     133 *  File System Operations Table
     134 */
     135
     136/*
     137 *  XXX
     138 *  This routine does not allocate any space and rtems_filesystem_freenode_t
     139 *  is not called by the generic after calling this routine.
     140 *  ie. node_access does not have to contain valid data when the
     141 *      routine returns.
     142 */
     143
     144typedef int (*rtems_filesystem_mknod_t)(
     145   const char                        *path,       /* IN */
     146   mode_t                             mode,       /* IN */
     147   dev_t                              dev,        /* IN */
     148   rtems_filesystem_location_info_t  *pathloc     /* IN/OUT */
     149);
     150
     151/*
     152 *  rtems_filesystem_freenode_t must be called by the generic after
     153 *  calling this routine
     154 */
     155
     156typedef int (*rtems_filesystem_evalpath_t)(
     157  const char                        *pathname,      /* IN     */
     158  int                                flags,         /* IN     */
     159  rtems_filesystem_location_info_t  *pathloc        /* IN/OUT */
     160);
     161
     162typedef int (*rtems_filesystem_evalmake_t)(
     163   const char                       *path,       /* IN */
     164   rtems_filesystem_location_info_t *pathloc,    /* IN/OUT */
     165   const char                      **name        /* OUT    */
     166);
     167
     168typedef int (*rtems_filesystem_link_t)(
     169 rtems_filesystem_location_info_t  *to_loc,      /* IN */
     170 rtems_filesystem_location_info_t  *parent_loc,  /* IN */
     171 const char                        *name         /* IN */
     172);
     173
     174typedef int (*rtems_filesystem_unlink_t)(
     175 rtems_filesystem_location_info_t  *pathloc       /* IN */
     176);
     177
     178typedef int (*rtems_filesystem_chown_t)(
     179 rtems_filesystem_location_info_t  *pathloc,       /* IN */
     180 uid_t                              owner,         /* IN */
     181 gid_t                              group          /* IN */
     182);
     183
     184typedef int (*rtems_filesystem_freenode_t)(
     185 rtems_filesystem_location_info_t      *pathloc       /* IN */
     186);
     187
     188typedef int (*rtems_filesystem_rmnod_t)(
     189 rtems_filesystem_location_info_t      *pathloc       /* IN */
     190);
     191
     192typedef int (* rtems_filesystem_mount_t ) (
     193   rtems_filesystem_mount_table_entry_t *mt_entry     /* in */
     194);
     195
     196typedef int (* rtems_filesystem_fsmount_me_t )(
     197   rtems_filesystem_mount_table_entry_t *mt_entry
     198);
     199
     200typedef int (* rtems_filesystem_unmount_t ) (
     201   rtems_filesystem_mount_table_entry_t *mt_entry     /* in */
     202);
     203
     204typedef int (* rtems_filesystem_fsunmount_me_t ) (
     205   rtems_filesystem_mount_table_entry_t *mt_entry    /* in */
     206);
     207
     208typedef rtems_filesystem_node_types_t (* rtems_filesystem_node_type_t) (
     209  rtems_filesystem_location_info_t    *pathloc      /* in */
     210);
     211
     212typedef int (* rtems_filesystem_utime_t)(
     213  rtems_filesystem_location_info_t  *pathloc,       /* IN */
     214  time_t                             actime,        /* IN */
     215  time_t                             modtime        /* IN */
     216);
     217
     218typedef int (*rtems_filesystem_evaluate_link_t)(
     219  rtems_filesystem_location_info_t *pathloc,     /* IN/OUT */
     220  int                               flags        /* IN     */
     221);
     222
     223typedef int (*rtems_filesystem_symlink_t)(
     224 rtems_filesystem_location_info_t  *loc,         /* IN */
     225 const char                        *link_name,   /* IN */
     226 const char                        *node_name
     227);
     228
     229typedef int (*rtems_filesystem_readlink_t)(
     230 rtems_filesystem_location_info_t  *loc,     /* IN  */       
     231 char                              *buf,     /* OUT */       
     232 size_t                            bufsize   
     233);
     234
     235/*
     236 * operations table that must be defined for every file system.
     237 */
     238
     239/*
     240 * File system types
     241 */
     242typedef struct {
     243    rtems_filesystem_evalpath_t      evalpath;
     244    rtems_filesystem_evalmake_t      evalformake;
     245    rtems_filesystem_link_t          link;
     246    rtems_filesystem_unlink_t        unlink;
     247    rtems_filesystem_node_type_t     node_type;
     248    rtems_filesystem_mknod_t         mknod;
     249    rtems_filesystem_rmnod_t         rmnod;
     250    rtems_filesystem_chown_t         chown;
     251    rtems_filesystem_freenode_t      freenod;
     252    rtems_filesystem_mount_t         mount;
     253    rtems_filesystem_fsmount_me_t    fsmount_me;
     254    rtems_filesystem_unmount_t       unmount;
     255    rtems_filesystem_fsunmount_me_t  fsunmount_me;
     256    rtems_filesystem_utime_t         utime;
     257    rtems_filesystem_evaluate_link_t eval_link;
     258    rtems_filesystem_symlink_t       symlink;
     259    rtems_filesystem_readlink_t      readlink;
     260} rtems_filesystem_operations_table;
     261
     262#define IMFS_FILE_SYSTEM IMFS_ops
     263extern rtems_filesystem_operations_table  IMFS_ops;
     264
     265
     266/*
     267 * Structure used to determine a location/filesystem in the tree.
     268 */
     269
     270struct rtems_filesystem_location_info_tt
     271{
     272  void                                   *node_access;
     273  rtems_filesystem_file_handlers_r       *handlers;
     274  rtems_filesystem_operations_table      *ops;
     275  rtems_filesystem_mount_table_entry_t   *mt_entry;
     276};
     277
     278/*
     279 *  Structure used to contain file system specific information which
     280 *  is required to support fpathconf().
     281 */
     282
     283typedef struct {
     284  int    link_max;
     285  int    max_canon;
     286  int    max_input;
     287  int    name_max;
     288  int    path_max;
     289  int    pipe_buf;
     290  int    posix_async_io;
     291  int    posix_chown_restrictions;
     292  int    posix_no_trunc;
     293  int    posix_prio_io;
     294  int    posix_sync_io;
     295  int    posix_vdisable;
     296} rtems_filesystem_limits_and_options_t;
     297
     298/*
     299 * Structure for a mount table entry.
     300 */
     301
     302struct rtems_filesystem_mount_table_entry_tt{
     303  Chain_Node                             Node;
     304  rtems_filesystem_location_info_t       mt_point_node;
     305  rtems_filesystem_location_info_t       mt_fs_root;
     306  int                                    options;
     307  void                                  *fs_info;
     308
     309  rtems_filesystem_limits_and_options_t  pathconf_limits_and_options;
     310
     311  /*
     312   *  When someone adds a mounted filesystem on a real device,
     313   *  this will need to be used.
     314   *
     315   *  The best option long term for this is probably an open file descriptor.
     316   */
     317  char                                  *dev;
     318};
     319
     320/*
     321 *  Valid RTEMS file systems options
     322 */
     323
     324typedef enum
     325{
     326  RTEMS_FILESYSTEM_READ_ONLY,
     327  RTEMS_FILESYSTEM_READ_WRITE_ONLY,
     328  RTEMS_FILESYSTEM_BAD_OPTIONS
     329} rtems_filesystem_options_t;
     330
     331
     332/*
     333 *  An open file data structure, indexed by 'fd'
     334 *  TODO:
     335 *     should really have a separate per/file data structure that this
     336 *     points to (eg: size, offset, driver, pathname should be in that)
     337 */
     338
     339struct rtems_libio_tt {
     340    rtems_driver_name_t              *driver;
     341    off_t                             size;      /* size of file */
     342    off_t                             offset;    /* current offset into file */
     343    unsigned32                        flags;
     344    rtems_filesystem_location_info_t  pathinfo;
     345    Objects_Id                        sem;     
     346    unsigned32                        data0;     /* private to "driver" */
     347    void                             *data1;     /* ... */
     348    void                             *file_info; /* used by file handlers */
     349    rtems_filesystem_file_handlers_r *handlers;  /* type specific handlers */
     350};
     351
     352/*
     353 *  param block for read/write
     354 *  Note: it must include 'offset' instead of using iop's offset since
     355 *        we can have multiple outstanding i/o's on a device.
    43356 */
    44357
    45358typedef struct {
    46359    rtems_libio_t          *iop;
    47     rtems_libio_offset_t    offset;
     360    off_t                   offset;
    48361    unsigned8              *buffer;
    49362    unsigned32              count;
    … …  
    53366
    54367/*
    55  * param block for open/close
     368 *  param block for open/close
    56369 */
    57370
    … …  
    63376
    64377/*
    65  * param block for ioctl
     378 *  param block for ioctl
    66379 */
    67380
    … …  
    73386} rtems_libio_ioctl_args_t;
    74387
    75 
    76 /*
    77  * Values for 'flag'
     388/*
     389 *  Values for 'flag'
    78390 */
    79391
    … …  
    85397#define LIBIO_FLAGS_APPEND        0x0200  /* all writes append */
    86398#define LIBIO_FLAGS_CREATE        0x0400  /* create file */
     399#define LIBIO_FLAGS_CLOSE_ON_EXEC 0x0800  /* close on process exec() */
    87400
    88401#define LIBIO_FLAGS_READ_WRITE    (LIBIO_FLAGS_READ | LIBIO_FLAGS_WRITE)
    89402
     403
    90404void rtems_libio_init(void);
    91405
    92 int __rtems_open(const char  *pathname, unsigned32 flag, unsigned32 mode);
    93 int __rtems_close(int  fd);
    94 int __rtems_read(int fd, void *buffer, unsigned32 count);
    95 int __rtems_write(int fd, const void *buffer, unsigned32 count);
    96 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
    97 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
    98 int __rtems_fstat(int _fd, struct stat* _sbuf);
    99 
    100 /*
    101  * External I/O handlers
    102  */
    103 typedef struct {
    104     int (*open)(const char  *pathname, unsigned32 flag, unsigned32 mode);
    105     int (*close)(int  fd);
    106     int (*read)(int fd, void *buffer, unsigned32 count);
    107     int (*write)(int fd, const void *buffer, unsigned32 count);
    108     int (*ioctl)(int fd, unsigned32  command, void *buffer);
    109     int (*lseek)(int fd, rtems_libio_offset_t offset, int whence);
     406/*
     407 *  External I/O handlers
     408 */
     409
     410typedef int (*rtems_libio_open_t)(
     411  const char  *pathname,
     412  unsigned32  flag,
     413  unsigned32  mode
     414);
     415
     416typedef int (*rtems_libio_close_t)(
     417  int  fd
     418);
     419
     420typedef int (*rtems_libio_read_t)(
     421  int         fd,
     422  void       *buffer,
     423  unsigned32  count
     424);
     425
     426typedef int (*rtems_libio_write_t)(
     427  int         fd,
     428  const void *buffer,
     429  unsigned32  count
     430);
     431
     432typedef int (*rtems_libio_ioctl_t)(
     433  int         fd,
     434  unsigned32  command,
     435  void       *buffer
     436);
     437
     438typedef int (*rtems_libio_lseek_t)(
     439  int    fd,
     440  off_t  offset,
     441  int    whence
     442);
     443
     444typedef struct {
     445    rtems_libio_open_t   open;
     446    rtems_libio_close_t  close;
     447    rtems_libio_read_t   read;
     448    rtems_libio_write_t  write;
     449    rtems_libio_ioctl_t  ioctl;
     450    rtems_libio_lseek_t  lseek;
    110451} rtems_libio_handler_t;
    111452
    112 void rtems_register_libio_handler(int handler_flag,
    113                                  const rtems_libio_handler_t *handler);
     453/*
     454 *  Register a set of external handlers
     455 */
     456
     457void rtems_register_libio_handler(
     458  int                          handler_flag,
     459  const rtems_libio_handler_t *handler
     460);
     461
     462/*
     463 *  Macros to assist in management of external IO handlers.
     464 */
    114465
    115466#define RTEMS_FILE_DESCRIPTOR_TYPE_FILE         0x0000
    … …  
    129480
    130481/*
     482 *  The following macros are used to build up the permissions sets
     483 *  used to check permissions.  These are similar in style to the
     484 *  mode_t bits and should stay compatible with them.
     485 */
     486
     487#define RTEMS_LIBIO_PERMS_READ   S_IROTH
     488#define RTEMS_LIBIO_PERMS_WRITE  S_IWOTH
     489#define RTEMS_LIBIO_PERMS_RDWR   (S_IROTH|S_IWOTH)
     490#define RTEMS_LIBIO_PERMS_EXEC   S_IXOTH
     491#define RTEMS_LIBIO_PERMS_SEARCH RTEMS_LIBIO_PERMS_EXEC
     492#define RTEMS_LIBIO_PERMS_RWX    S_IRWXO
     493
     494/*
     495 *  Macros
     496 */
     497
     498#define rtems_filesystem_make_dev_t( _major, _minor ) \
     499  ((((dev_t)(_major)) << 32) | (dev_t)(_minor))
     500
     501#define rtems_filesystem_split_dev_t( _dev, _major, _minor ) \
     502  do { \
     503    (_major) = (rtems_device_major_number) ((_dev) >> 32); \
     504    (_minor) = (rtems_device_minor_number) ((_dev) & 0xFFFFFFFF); \
     505  } while(0)
     506
     507/*
     508 * Verifies that the permission flag is valid.
     509 */
     510#define rtems_libio_is_valid_perms( _perm )     \
     511 (~ ((~RTEMS_LIBIO_PERMS_RWX) & _perm ))
     512
     513
     514/*
     515 *  Prototypes for filesystem
     516 */
     517
     518void rtems_filesystem_initialize( void );
     519
     520
     521/*
    131522 * Callbacks from TERMIOS routines to device-dependent code
    132523 */
     524
    133525#include <termios.h>
     526
    134527typedef struct rtems_termios_callbacks {
    135   int       (*firstOpen)(int major, int minor, void *arg);
    136   int       (*lastClose)(int major, int minor, void *arg);
    137   int       (*pollRead)(int minor);
    138   int       (*write)(int minor, const char *buf, int len);
    139   int       (*setAttributes)(int minor, const struct termios *t);
    140   int       (*stopRemoteTx)(int minor);
    141   int       (*startRemoteTx)(int minor);
    142   int       outputUsesInterrupts;
     528  int    (*firstOpen)(int major, int minor, void *arg);
     529  int    (*lastClose)(int major, int minor, void *arg);
     530  int    (*pollRead)(int minor);
     531  int    (*write)(int minor, const char *buf, int len);
     532  int    (*setAttributes)(int minor, const struct termios *t);
     533  int    (*stopRemoteTx)(int minor);
     534  int    (*startRemoteTx)(int minor);
     535  int    outputUsesInterrupts;
    143536} rtems_termios_callbacks;
    144537
    145538/*
    146  * Device-independent TERMIOS routines
    147  */
     539 *  Device-independent TERMIOS routines
     540 */
     541
    148542void rtems_termios_initialize (void);
     543
    149544rtems_status_code rtems_termios_open (
    150545  rtems_device_major_number      major,
    … …  
    152547  void                          *arg,
    153548  const rtems_termios_callbacks *callbacks
    154   );
    155 rtems_status_code rtems_termios_close (void *arg);
    156 rtems_status_code rtems_termios_read (void *arg);
    157 rtems_status_code rtems_termios_write (void *arg);
    158 rtems_status_code rtems_termios_ioctl (void *arg);
    159 int rtems_termios_enqueue_raw_characters (void *ttyp, char *buf, int len);
    160 int rtems_termios_dequeue_characters (void *ttyp, int len);
     549);
     550
     551rtems_status_code rtems_termios_close(
     552  void *arg
     553);
     554
     555rtems_status_code rtems_termios_read(
     556  void *arg
     557);
     558
     559rtems_status_code rtems_termios_write(
     560  void *arg
     561);
     562
     563rtems_status_code rtems_termios_ioctl(
     564  void *arg
     565);
     566
     567int rtems_termios_enqueue_raw_characters(
     568  void *ttyp,
     569  char *buf,
     570  int   len
     571);
     572
     573int rtems_termios_dequeue_characters(
     574  void *ttyp,
     575  int   len
     576);
     577
    161578void rtems_termios_reserve_resources(
    162579  rtems_configuration_table *configuration,
    … …  
    164581);
    165582
     583int unmount(
     584  const char *mount_path
     585);
     586
     587int mount(
     588  rtems_filesystem_mount_table_entry_t **mt_entry,
     589  rtems_filesystem_operations_table    *fs_ops,
     590  char                                 *fsoptions,
     591  char                                 *device,
     592  char                                 *mount_point
     593);
     594
    166595#endif /* _RTEMS_LIBIO_H */

  • c/src/lib/libbsp/shared/bsplibc.c

    rcd3fb80 r07a3253d  
    2323    /*
    2424     *  Init the RTEMS libio facility to provide UNIX-like system
    25      *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
     25     *  calls for use by newlib (ie: provide open, close, etc)
    2626     *  Uses malloc() to get area for the iops, so must be after malloc init
    2727     */

  • c/src/lib/libbsp/shared/bsppost.c

    rcd3fb80 r07a3253d  
    2323  error_code = 'S' << 24 | 'T' << 16;
    2424
    25   if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1)
     25  if ((stdin_fd = open("/dev/console", O_RDONLY, 0)) == -1)
    2626    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
    2727
    28   if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
     28  if ((stdout_fd = open("/dev/console", O_WRONLY, 0)) == -1)
    2929    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
    3030
    31   if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
     31  if ((stderr_fd = open("/dev/console", O_WRONLY, 0)) == -1)
    3232    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
    3333

  • c/src/lib/libc/Makefile.in

    rcd3fb80 r07a3253d  
    1212LIB=${ARCH}/${LIBNAME}
    1313
    14 # define TARGET_PIECES later based on RTEMS_CPU definition
     14BASE_FS_PIECES=base_fs mount unmount ioman \
     15  libio eval
     16
     17IMFS_PIECES= imfs_chown imfs_creat imfs_directory imfs_eval imfs_free \
     18    imfs_gtkn imfs_init imfs_link imfs_mknod imfs_mount imfs_fchmod \
     19    imfs_rmnod imfs_unlink imfs_unmount imfs_utime imfs_ntype imfs_stat \
     20    imfs_getchild memfile deviceio imfs_handlers imfs_debug imfs_symlink \
     21    imfs_readlink
     22
     23TERMIOS_PIECES= cfgetispeed cfgetospeed cfsetispeed cfsetospeed \
     24  tcgetattr tcsetattr tcdrain termios
     25
     26SYSTEM_CALL_PIECES=\
     27  open close read write lseek ioctl \
     28  mkdir mknod mkfifo rmdir chdir \
     29  chmod fchmod chown \
     30  link unlink umask ftruncate utime \
     31  fstat fcntl fpathconf getdents \
     32  fsync fdatasync pipe dup dup2  \
     33  symlink readlink
     34
     35DIRECTORY_SCAN_PIECES=\
     36  opendir closedir readdir rewinddir scandir seekdir telldir
     37
     38LIBC_GLUE_PIECES=\
     39  malloc __brk __sbrk \
     40  __gettod __times \
     41  truncate access stat pathconf \
     42  newlibc no_libc unixlibc hosterr
    1543
    1644# C and C++ source names, if any, go here -- minus the .c or .cc
    17 C_PIECES=__times _execve malloc syscalls \
    18     no_libc support libio hosterr tcattr tcdrain \
    19     cfiospeed termios $(TARGET_PIECES)
     45C_PIECES=\
     46    $(LIBC_GLUE_PIECES) \
     47    $(TERMIOS_PIECES) \
     48    $(SYSTEM_CALL_PIECES) \
     49    $(DIRECTORY_SCAN_PIECES) \
     50    $(BASE_FS_PIECES) \
     51    $(IMFS_PIECES)
     52
    2053C_FILES=$(C_PIECES:%=%.c)
    2154C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
    … …  
    2457SYS_H_FILES=
    2558RTEMS_H_FILES=$(srcdir)/libio.h
    26 PRIVATE_H_FILES=$(srcdir)/internal.h
    2759
    2860INSTALLED_H_FILES=$(srcdir)/libio.h $(srcdir)/libcsupport.h
    29 SRCS=$(C_FILES) $(H_FILES) $(SYS_H_FILES) $(RTEMS_H_FILES) $(PRIVATE_H_FILES)
     61SRCS=$(C_FILES) $(H_FILES) $(SYS_H_FILES) $(RTEMS_H_FILES)
    3062OBJS=$(C_O_FILES)
    3163
    3264include $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
    3365include $(RTEMS_ROOT)/make/lib.cfg
    34 
    35 ifeq ($(RTEMS_CPU),unix)
    36 TARGET_PIECES=unixlibc
    37 else
    38 TARGET_PIECES=__brk __gettod newlibc newlibif newlibifr \
    39   getdents readdir opendir closedir rewinddir scandir seekdir telldir
    40 endif
    4166
    4267#

  • c/src/lib/libc/__brk.c

    rcd3fb80 r07a3253d  
    1 #if !defined(RTEMS_UNIX)
    2 
    31/*
    4  *  RTEMS "Broken" __brk/__sbrk Implementation
     2 *  RTEMS "Broken" __brk Implementation
    53 *
    6  *  NOTE: sbrk is BSP provided.
    7  *
     4 *  NOTE: sbrk() is provided by each BSP.
    85 *
    96 *  COPYRIGHT (c) 1989-1998.
    … …  
    1916
    2017#include <rtems.h>
     18#if !defined(RTEMS_UNIX)
    2119
    22 #include <signal.h>
    2320#include <errno.h>
    24 #include <sys/types.h>
    25 #ifdef RTEMS_NEWLIB
    26 #include <reent.h>
    27 #endif
    28 #include <unistd.h>
    2921
    30 /* we use RTEMS for memory management.  We don't need sbrk */
    31 
    32 void * __sbrk(int incr)
    33 {
    34   errno = EINVAL;
    35   return (void *)0;
    36 }
    37 
    38 int __brk( const void *endds )
     22int __brk(
     23  const void *endds
     24)
    3925{
    4026  errno = EINVAL;
    4127  return -1;
    4228}
    43 
    4429#endif

  • c/src/lib/libc/__gettod.c

    rcd3fb80 r07a3253d  
    1 #define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
    2 
    3 #include <rtems.h>
    4 
    5 #if !defined(RTEMS_UNIX)
    61/*
    7  *  RTEMS gettimeofday Implementation
    8  *
     2 *  gettimeofday() - SVR4 and BSD4.3 extension required by Newlib
    93 *
    104 *  COPYRIGHT (c) 1989-1998.
    … …  
    1913 */
    2014
     15#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
     16
     17#include <rtems.h>
     18
     19#if !defined(RTEMS_UNIX)
    2120#ifdef RTEMS_NEWLIB
    2221#include <sys/reent.h>
    … …  
    6261   *  NOTE: XXX this routine should really be in the executive proper.
    6362   */
    64  
     63
    6564  rtems_interrupt_disable(level);
    6665    seconds      = _TOD_Seconds_since_epoch;
    … …  
    8786}
    8887
    89 #if defined(RTEMS_NEWLIB) 
     88#if defined(RTEMS_NEWLIB)
    9089
    9190/*
    … …  
    103102
    104103/*
    105  *  "System call" version 
     104 *  "System call" version
    106105 */
    107106

  • c/src/lib/libc/__times.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  RTEMS _times Implementation
    3  *
     2 *  times() - POSIX 1003.1b 4.5.2 - Get Process Times
    43 *
    54 *  COPYRIGHT (c) 1989-1998.
    … …  
    2625)
    2726{
    28   rtems_status_code      status;
    29   rtems_interval         ticks_since_boot;
     27  rtems_status_code  status;
     28  rtems_interval     ticks;
    3029
    3130  if ( !ptms ) {
    … …  
    3534
    3635  /* "POSIX" does not seem to allow for not having a TOD */
    37   status = rtems_clock_get(
    38     RTEMS_CLOCK_GET_TICKS_SINCE_BOOT,
    39     &ticks_since_boot
    40   );
     36  status = rtems_clock_get( RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &ticks );
    4137  if ( status != RTEMS_SUCCESSFUL ) {
    4238    assert( 0 );
    … …  
    4541
    4642  /*
    47    *  RTEMS has no notion of system versus user time and does
    48    *  not (as of 3.2.0) keep track of CPU usage on a per task basis.
     43   *  RTEMS has no notion of system versus user time and although
     44   *  a way to keep track of per task CPU usage was added since
     45   *  3.6.0, this routine does not utilize it yet.
    4946   */
    5047
    51   ptms->tms_utime  = ticks_since_boot;
     48  ptms->tms_utime  = ticks;
    5249  ptms->tms_stime  = 0;
    5350  ptms->tms_cutime = 0;
    … …  
    5653  return 0;
    5754}
     55
     56/*
     57 *  times()
     58 *
     59 *  times() system call wrapper for _times() above.
     60 */
    5861
    5962clock_t times(
    … …  
    6467}
    6568
     69/*
     70 *  _times_r
     71 *
     72 *  This is the Newlib dependent reentrant version of times().
     73 */
     74
    6675#if defined(RTEMS_NEWLIB)
     76
     77#include <reent.h>
     78
    6779clock_t _times_r(
    6880   struct _reent *ptr,
    … …  
    7082)
    7183{
    72   return _times(ptms);
     84  return _times( ptms );
    7385}
    7486#endif

  • c/src/lib/libc/closedir.c

    rcd3fb80 r07a3253d  
    22 *  closedir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
    537 */
    638
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)closedir.c  5.9 (Berkeley) 2/23/91";
     41#endif /* LIBC_SCCS and not lint */
    742
    843#include <sys/types.h>
    … …  
    1247#include <errno.h>
    1348
    14 int closedir(
    15   register DIR *dirp
    16 )
     49
     50#include "libio_.h"
     51
     52/*
     53 * close a directory.
     54 */
     55int
     56closedir(dirp)
     57        register DIR *dirp;
    1758{
    18   errno = ENOSYS;
    19   return -1;
     59        int fd;
     60
     61        if ( !dirp )
     62          set_errno_and_return_minus_one( EBADF );
     63
     64        fd = dirp->dd_fd;
     65        dirp->dd_fd = -1;
     66        dirp->dd_loc = 0;
     67        (void)free((void *)dirp->dd_buf);
     68        (void)free((void *)dirp);
     69        return(close(fd));
    2070}

  • c/src/lib/libc/getdents.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  Just enough to make newlib return an error.
     2 *  getdents() - Get Directory Entries
     3 *
     4 *  SVR4 and SVID extension required by Newlib readdir() family.
     5 *
     6 *  This routine will dd_len / (sizeof dirent) directory entries relative to
     7 *  the current directory position index. These entries will be placed in
     8 *  character array pointed to by -dd_buf-
     9 *
     10 *  COPYRIGHT (c) 1989-1998.
     11 *  On-Line Applications Research Corporation (OAR).
     12 *  Copyright assigned to U.S. Government, 1994.
     13 *
     14 *  The license and distribution terms for this file may be
     15 *  found in the file LICENSE in this distribution or at
     16 *  http://www.OARcorp.com/rtems/license.html.
    317 *
    418 *  $Id$
    519 */
    620
     21#include <errno.h>
     22
     23#include "libio_.h"
     24
    725int getdents(
    8   int   fd,
    9   void *buf,
    10   int   len
     26  int   dd_fd,
     27  char *dd_buf,
     28  int   dd_len
    1129)
    1230{
    13   return -1;
     31  rtems_libio_t                    *iop;
     32  rtems_filesystem_location_info_t  loc;
     33
     34  /*
     35   *  Get the file control block structure associated with the file descriptor
     36   */
     37
     38  iop = rtems_libio_iop( dd_fd );
     39
     40  /*
     41   *  Make sure we are working on a directory
     42   */
     43  loc = iop->pathinfo;
     44  if ( !loc.ops->node_type )
     45    set_errno_and_return_minus_one( ENOTSUP );
     46   
     47  if ( (*loc.ops->node_type)( &loc ) != RTEMS_FILESYSTEM_DIRECTORY )
     48    set_errno_and_return_minus_one( ENOTDIR );
     49
     50  /*
     51   *  Return the number of bytes that were actually transfered as a result
     52   *  of the read attempt.
     53   */
     54
     55  if ( !iop->handlers->read )
     56    set_errno_and_return_minus_one( ENOTSUP );
     57
     58  return (*iop->handlers->read)( iop, dd_buf, dd_len  );
    1459}

  • c/src/lib/libc/hosterr.c

    rcd3fb80 r07a3253d  
    1414
    1515#include <rtems.h>
     16#if defined(RTEMS_UNIX)
    1617#include <errno.h>
    1718
    18 int host_errno(void);
     19int host_errno( void );
    1920
    2021/*
    21  * copy host errno, if any to thread aware errno, if any
     22 *  fix_syscall_errno
     23 *
     24 *  copy host errno, if any to thread aware errno, if any
    2225 */
    2326
    24 void fix_syscall_errno(void)
     27void fix_syscall_errno( void )
    2528{
    26     errno = host_errno();
     29  errno = host_errno();
    2730}
    2831
    2932/*
    30  * Get the host system errno, if any
    31  * When using newlib (or possibly other libc's) on top of UNIX
    32  * the errno returned by system calls may be unavailable due
    33  * to trickery of making errno thread aware.
    34  * This provides a kludge of getting at it.
     33 *  host_errno
     34 *
     35 *  Get the host system errno, if any
     36 *  When using newlib (or possibly other libc's) on top of UNIX
     37 *  the errno returned by system calls may be unavailable due
     38 *  to trickery of making errno thread aware.
     39 *  This provides a kludge of getting at it.
    3540 */
    3641
    … …  
    3944int host_errno(void)
    4045{
    41     return errno;
     46  return errno;
    4247}
    43 
     48#endif

  • c/src/lib/libc/libio.c

    rcd3fb80 r07a3253d  
    11/*
    2  *  Provide UNIX/POSIX-like io system calls for RTEMS using the
    3  *  RTEMS IO manager
     2 *  This file contains the support infrastructure used to manage the
     3 *  table of integer style file descriptors used by the low level
     4 *  POSIX system calls like open(), read, fstat(), etc.
     5 *
     6 *  This provides the foundation for POSIX compliant IO system calls
     7 *  for RTEMS.
     8 *
     9 *  COPYRIGHT (c) 1989-1998.
     10 *  On-Line Applications Research Corporation (OAR).
     11 *  Copyright assigned to U.S. Government, 1994.
     12 *
     13 *  The license and distribution terms for this file may be
     14 *  found in the file LICENSE in this distribution or at
     15 *  http://www.OARcorp.com/rtems/license.html.
    416 *
    517 *  $Id$
    618 */
    719
    8 #include <rtems.h>
    9 #include <rtems/assoc.h>                /* assoc.h not included by rtems.h */
    10 
    11 #include <stdio.h>                      /* O_RDONLY, et.al. */
    12 #include <fcntl.h>                      /* O_RDONLY, et.al. */
    13 #include <assert.h>
    14 
    15 #if ! defined(O_NDELAY)
    16 # if defined(solaris2)
    17 #  define O_NDELAY O_NONBLOCK
    18 # elif defined(RTEMS_NEWLIB)
    19 #  define O_NDELAY _FNBIO
    20 # endif
    21 #endif
    22 
    23 
    24 #include <errno.h>
    25 #include <string.h>                     /* strcmp */
    26 #include <unistd.h>
    27 #include <stdlib.h>                     /* calloc() */
    28 
    29 #include "libio.h"                      /* libio.h not pulled in by rtems */
    30 
    31 /*
    32  * Semaphore to protect the io table
    33  */
    34 
    35 Objects_Id rtems_libio_semaphore;
    36 
    37 #define RTEMS_LIBIO_SEM         rtems_build_name('L', 'B', 'I', 'O')
    38 #define RTEMS_LIBIO_IOP_SEM(n)  rtems_build_name('L', 'B', 'I', n)
    39 
    40 extern unsigned32     rtems_libio_number_iops;
    41 rtems_libio_t *rtems_libio_iops;
    42 rtems_libio_t *rtems_libio_last_iop;
    43 
    44 #define rtems_libio_iop(fd)    ((((unsigned32)(fd)) < rtems_libio_number_iops) ? \
    45                                        &rtems_libio_iops[fd] : 0)
    46 
    47 #define rtems_libio_check_fd(fd) \
    48     do { \
    49         if ((unsigned32) (fd) >= rtems_libio_number_iops) \
    50         { \
    51             errno = EBADF; \
    52             return -1; \
    53         } \
    54     } while (0)
    55 
    56 #define rtems_libio_check_buffer(buffer) \
    57     do { \
    58         if ((buffer) == 0) \
    59         { \
    60             errno = EINVAL; \
    61             return -1; \
    62         } \
    63     } while (0)
    64 
    65 #define rtems_libio_check_count(count) \
    66     do { \
    67         if ((count) == 0) \
    68         { \
    69             return 0; \
    70         } \
    71     } while (0)
    72 
    73 #define rtems_libio_check_permissions(iop, flag) \
    74     do { \
    75         if (((iop)->flags & (flag)) == 0) \
    76         { \
    77               errno = EINVAL; \
    78               return -1; \
    79         } \
    80     } while (0)
    81 
    82 /*
    83  * External I/O handlers
    84  *
    85  * Space for all possible handlers is preallocated
    86  * to speed up dispatch to external handlers.
    87  */
    88 
    89 static rtems_libio_handler_t handlers[15];
    90 
    91 void
    92 rtems_register_libio_handler(
    93     int                         handler_flag,
    94     const rtems_libio_handler_t *handler
    95 )
    96 {
    97   int handler_index = rtems_file_descriptor_type_index(handler_flag);
     20#include "libio_.h"                   /* libio_.h pulls in rtems */
     21
     22/*
     23 *  Global variables used to manage the File Descriptor Table.
     24 *  IOP = IO Pointer.
     25 */
     26
     27rtems_id                rtems_libio_semaphore;
     28rtems_libio_t          *rtems_libio_iops;
     29rtems_libio_t          *rtems_libio_last_iop;
     30rtems_libio_handler_t   rtems_libio_handlers[15];
     31
     32/*
     33 *  rtems_register_libio_handler
     34 *
     35 *  This function registers an external IO handler set.  This lets
     36 *  other subsystems have their own versions of many of the system
     37 *  calls.  For example, the networking code registers handlers which
     38 *  map the system calls for read() and write() to socket calls.
     39 *
     40 */
     41
     42void rtems_register_libio_handler(
     43  int                          handler_flag,
     44  const rtems_libio_handler_t *handler
     45)
     46{
     47  int handler_index = rtems_file_descriptor_type_index( handler_flag );
     48
    9849
    9950  if ((handler_index < 0) || (handler_index >= 15))
    10051    rtems_fatal_error_occurred( RTEMS_INVALID_NUMBER );
    101   handlers[handler_index] = *handler;
    102 }
    103 
    104 /*
    105  * Called by bsp startup code to init the libio area.
    106  */
    107 
    108 void
    109 rtems_libio_init(void)
    110 {
    111     rtems_status_code rc;
    112 
    113     if (rtems_libio_number_iops > 0)
    114     {
    115         rtems_libio_iops = (rtems_libio_t *) calloc(rtems_libio_number_iops,
    116                                                     sizeof(rtems_libio_t));
    117         if (rtems_libio_iops == NULL)
    118             rtems_fatal_error_occurred(RTEMS_NO_MEMORY);
    119 
    120         rtems_libio_last_iop = rtems_libio_iops + (rtems_libio_number_iops - 1);
     52
     53  rtems_libio_handlers[handler_index] = *handler;
     54}
     55
     56/*
     57 *  rtems_libio_init
     58 *
     59 *  Called by BSP startup code to initialize the libio subsystem.
     60 */
     61
     62void rtems_libio_init( void )
     63{
     64  rtems_status_code rc;
     65
     66  /*
     67   *  Allocate memory for the IOP Table
     68   */
     69
     70  if ( rtems_libio_number_iops > 0 ) {
     71    rtems_libio_iops =
     72      (rtems_libio_t *) calloc(rtems_libio_number_iops, sizeof(rtems_libio_t));
     73
     74    if (rtems_libio_iops == NULL)
     75        rtems_fatal_error_occurred( RTEMS_NO_MEMORY );
     76
     77    rtems_libio_last_iop = rtems_libio_iops + (rtems_libio_number_iops - 1);
     78  }
     79
     80  /*
     81   *  Create the binary semaphore used to provide mutual exclusion
     82   *  on the IOP Table.
     83   */
     84
     85  rc = rtems_semaphore_create(
     86    RTEMS_LIBIO_SEM,
     87    1,
     88    RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
     89    RTEMS_NO_PRIORITY,
     90    &rtems_libio_semaphore
     91  );
     92  if ( rc != RTEMS_SUCCESSFUL )
     93    rtems_fatal_error_occurred( rc );
     94
     95  /*
     96   *  Initialize the base file system infrastructure.
     97   */
     98
     99  rtems_filesystem_initialize();
     100}
     101
     102/*
     103 *  rtems_libio_fcntl_flags
     104 *
     105 *  Convert UNIX fnctl(2) flags to ones that RTEMS drivers understand
     106 */
     107
     108rtems_assoc_t access_modes_assoc[] = {
     109  { "READ",       LIBIO_FLAGS_READ,  O_RDONLY },
     110  { "WRITE",      LIBIO_FLAGS_WRITE, O_WRONLY },
     111  { "READ/WRITE", LIBIO_FLAGS_READ_WRITE, O_RDWR },
     112  { 0, 0, 0 },
     113};
     114
     115rtems_assoc_t status_flags_assoc[] = {
     116  { "NO DELAY",  LIBIO_FLAGS_NO_DELAY,  O_NDELAY },
     117  { "APPEND",    LIBIO_FLAGS_APPEND,    O_APPEND },
     118  { "CREATE",    LIBIO_FLAGS_CREATE,    O_CREAT },
     119  { 0, 0, 0 },
     120};
     121
     122unsigned32 rtems_libio_fcntl_flags(
     123  unsigned32 fcntl_flags
     124)
     125{
     126  unsigned32 flags = 0;
     127  unsigned32 access_modes;
     128
     129  /*
     130   * Access mode is a small integer
     131   */
     132 
     133  access_modes = fcntl_flags & O_ACCMODE;
     134  fcntl_flags &= ~O_ACCMODE;
     135  flags = rtems_assoc_local_by_remote( access_modes_assoc, access_modes );
     136
     137  /*
     138   * Everything else is single bits
     139   */
     140
     141  flags |=
     142     rtems_assoc_local_by_remote_bitfield(status_flags_assoc, fcntl_flags);
     143  return flags;
     144}
     145
     146/*
     147 *  rtems_libio_allocate
     148 *
     149 *  This routine searches the IOP Table for an unused entry.  If it
     150 *  finds one, it returns it.  Otherwise, it returns NULL.
     151 */
     152
     153rtems_libio_t *rtems_libio_allocate( void )
     154{
     155  rtems_libio_t *iop;
     156  rtems_status_code rc;
     157 
     158  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     159
     160  for (iop = rtems_libio_iops; iop <= rtems_libio_last_iop; iop++)
     161    if ((iop->flags & LIBIO_FLAGS_OPEN) == 0) {
     162      /*
     163       *  Got an IOP -- create a semaphore for it.
     164       */
     165
     166      rc = rtems_semaphore_create(
     167        RTEMS_LIBIO_IOP_SEM(iop - rtems_libio_iops),
     168        1,
     169        RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
     170        RTEMS_NO_PRIORITY,
     171        &iop->sem
     172      );
     173      if ( rc != RTEMS_SUCCESSFUL )
     174        goto failed;
     175   
     176      iop->flags = LIBIO_FLAGS_OPEN;
     177      goto done;
     178  }
     179 
     180failed:
     181  iop = 0;
     182 
     183done:
     184  rtems_semaphore_release( rtems_libio_semaphore );
     185  return iop;
     186}
     187
     188/*
     189 *  rtems_libio_free
     190 *
     191 *  This routine frees the resources associated with an IOP (file descriptor)
     192 *  and clears the slot in the IOP Table.
     193 */
     194
     195void rtems_libio_free(
     196  rtems_libio_t *iop
     197)
     198{
     199  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     200
     201  if (iop->sem)
     202    rtems_semaphore_delete(iop->sem);
     203
     204  (void) memset(iop, 0, sizeof(*iop));
     205
     206  rtems_semaphore_release( rtems_libio_semaphore );
     207}
     208
     209/*
     210 *  rtems_libio_is_open_files_in_fs
     211 *
     212 *  This routine scans the entire file descriptor table to determine if the
     213 *  are any active file descriptors that refer to the atleast one node in the
     214 *  file system that we are trying to dismount.
     215 *
     216 *  If there is at least one node in the file system referenced by the mount
     217 *  table entry a 1 is returned, otherwise a 0 is returned.
     218 */
     219
     220int rtems_libio_is_open_files_in_fs(
     221  rtems_filesystem_mount_table_entry_t * fs_mt_entry
     222)
     223{
     224  rtems_libio_t     *iop;
     225  int                result = 0;
     226
     227  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     228
     229  /*
     230   *  Look for any active file descriptor entry.
     231   */
     232
     233  for ( iop=rtems_libio_iops ; iop <= rtems_libio_last_iop ; iop++ ) {
     234
     235    if ((iop->flags & LIBIO_FLAGS_OPEN) != 0) {
     236
     237       /*
     238        *  Check if this node is under the file system that we
     239        *  are trying to dismount.
     240        */
     241
     242       if ( iop->pathinfo.mt_entry == fs_mt_entry ) {
     243          result = 1;
     244          break;
     245       }
    121246    }
    122 
    123     rc = rtems_semaphore_create(
    124       RTEMS_LIBIO_SEM,
    125       1,
    126       RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
    127       RTEMS_NO_PRIORITY,
    128       &rtems_libio_semaphore
    129     );
    130     if (rc != RTEMS_SUCCESSFUL)
    131         rtems_fatal_error_occurred(rc);
    132 }
    133 
    134 /*
    135  * Convert RTEMS status to a UNIX errno
    136  */
    137 
    138 rtems_assoc_t errno_assoc[] = {
    139     { "OK",                 RTEMS_SUCCESSFUL,                0 },
    140     { "BUSY",               RTEMS_RESOURCE_IN_USE,           EBUSY },
    141     { "INVALID NAME",       RTEMS_INVALID_NAME,              EINVAL },
    142     { "NOT IMPLEMENTED",    RTEMS_NOT_IMPLEMENTED,           ENOSYS },
    143     { "TIMEOUT",            RTEMS_TIMEOUT,                   ETIMEDOUT },
    144     { "NO MEMORY",          RTEMS_NO_MEMORY,                 ENOMEM },
    145     { "NO DEVICE",          RTEMS_UNSATISFIED,               ENODEV },
    146     { "INVALID NUMBER",     RTEMS_INVALID_NUMBER,            EBADF},
    147     { "NOT RESOURCE OWNER", RTEMS_NOT_OWNER_OF_RESOURCE,     EPERM},
    148     { "IO ERROR",           RTEMS_IO_ERROR,                  EIO},
    149     { 0, 0, 0 },
    150 };
    151 
    152 static unsigned32
    153 rtems_libio_errno(rtems_status_code code)
    154 {
    155     int rc;
    156    
    157     if ((rc = rtems_assoc_remote_by_local(errno_assoc, (unsigned32) code)))
    158     {
    159         errno = rc;
    160         return -1;
     247  }
     248
     249  rtems_semaphore_release( rtems_libio_semaphore );
     250
     251  return result;
     252}
     253
     254/*
     255 *  rtems_libio_is_file_open
     256 *
     257 *  This routine scans the entire file descriptor table to determine if the
     258 *  given file refers to an active file descriptor.
     259 *
     260 *  If the given file is open a 1 is returned, otherwise a 0 is returned.
     261 */
     262
     263int rtems_libio_is_file_open(
     264  void         *node_access
     265)
     266{
     267  rtems_libio_t     *iop;
     268  int                result=0;
     269
     270  rtems_semaphore_obtain( rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT );
     271
     272  /*
     273   *  Look for any active file descriptor entry.
     274   */
     275
     276  for ( iop=rtems_libio_iops ; iop <= rtems_libio_last_iop ; iop++ ) {
     277
     278    if ((iop->flags & LIBIO_FLAGS_OPEN) != 0) {
     279
     280       /*
     281        *  Check if this node is under the file system that we
     282        *  are trying to dismount.
     283        */
     284
     285       if ( iop->pathinfo.node_access == node_access ) {
     286          result = 1;
     287          break;
     288       }
    161289    }
    162     return -1;
    163 }
    164 
    165 /*
    166  * Convert UNIX fnctl(2) flags to ones that RTEMS drivers understand
    167  */
    168 
    169 rtems_assoc_t access_modes_assoc[] = {
    170     { "READ",       LIBIO_FLAGS_READ,  O_RDONLY },
    171     { "WRITE",      LIBIO_FLAGS_WRITE, O_WRONLY },
    172     { "READ/WRITE", LIBIO_FLAGS_READ_WRITE, O_RDWR },
    173     { 0, 0, 0 },
    174 };
    175 
    176 rtems_assoc_t status_flags_assoc[] = {
    177     { "NO DELAY",  LIBIO_FLAGS_NO_DELAY,  O_NDELAY },
    178     { "APPEND",    LIBIO_FLAGS_APPEND,    O_APPEND },
    179     { "CREATE",    LIBIO_FLAGS_CREATE,    O_CREAT },
    180     { 0, 0, 0 },
    181 };
    182 
    183 static unsigned32
    184 rtems_libio_fcntl_flags(unsigned32 fcntl_flags)
    185 {
    186     unsigned32 flags = 0;
    187     unsigned32 access_modes;
    188 
    189     /*
    190      * Access mode is a small integer
    191      */
    192    
    193     access_modes = fcntl_flags & O_ACCMODE;
    194     fcntl_flags &= ~O_ACCMODE;
    195     flags = rtems_assoc_local_by_remote(access_modes_assoc, access_modes);
    196 
    197     /*
    198      * Everything else is single bits
    199      */
    200 
    201     flags |= rtems_assoc_local_by_remote_bitfield(status_flags_assoc, fcntl_flags);
    202     return flags;
    203 }
    204 
    205 
    206 static rtems_libio_t *
    207 rtems_libio_allocate(void)
    208 {
    209     rtems_libio_t *iop;
    210     rtems_status_code rc;
    211    
    212     rtems_semaphore_obtain(rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
    213 
    214     for (iop = rtems_libio_iops; iop <= rtems_libio_last_iop; iop++)
    215         if ((iop->flags & LIBIO_FLAGS_OPEN) == 0)
    216         {
    217             /*
    218              * Got one; create a semaphore for it
    219              */
    220 
    221             rc = rtems_semaphore_create(
    222               RTEMS_LIBIO_IOP_SEM(iop - rtems_libio_iops),
    223               1,
    224               RTEMS_BINARY_SEMAPHORE | RTEMS_INHERIT_PRIORITY | RTEMS_PRIORITY,
    225               RTEMS_NO_PRIORITY,
    226               &iop->sem
    227             );
    228             if (rc != RTEMS_SUCCESSFUL)
    229                 goto failed;
    230            
    231             iop->flags = LIBIO_FLAGS_OPEN;
    232             goto done;
    233         }
    234    
    235 failed:
    236     iop = 0;
    237    
    238 done:
    239     rtems_semaphore_release(rtems_libio_semaphore);
    240     return iop;
    241 }
    242 
    243 static void
    244 rtems_libio_free(rtems_libio_t *iop)
    245 {
    246     rtems_semaphore_obtain(rtems_libio_semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT);
    247 
    248     if (iop->sem)
    249         rtems_semaphore_delete(iop->sem);
    250     (void) memset(iop, 0, sizeof(*iop));
    251 
    252     rtems_semaphore_release(rtems_libio_semaphore);
    253 }
    254 
    255 int
    256 __rtems_open(
    257     const char   *pathname,
    258     unsigned32    flag,
    259     unsigned32    mode)
    260 {
    261     rtems_status_code rc;
    262     rtems_libio_t *iop = 0;
    263     rtems_driver_name_t *np;
    264     rtems_libio_open_close_args_t args;
    265 
    266     /*
    267      * Additional external I/O handlers would be supported by
    268      * adding code to pick apart the pathname appropriately.
    269      * The networking code does not require changes here since
    270      * network file descriptors are obtained using socket(), not
    271      * open().
    272      */
    273 
    274     if ((rc = rtems_io_lookup_name(pathname, &np)) != RTEMS_SUCCESSFUL)
    275         goto done;
    276 
    277     iop = rtems_libio_allocate();
    278     if (iop == 0)
    279     {
    280         rc = RTEMS_TOO_MANY;
    281         goto done;
    282     }
    283    
    284     iop->driver = np;
    285     iop->pathname = (char *) pathname;
    286     iop->flags |= rtems_libio_fcntl_flags(flag);
    287 
    288     args.iop = iop;
    289     args.flags = iop->flags;
    290     args.mode = mode;
    291 
    292     rc = rtems_io_open(np->major, np->minor, (void *) &args);
    293    
    294 done:
    295  
    296     if (rc != RTEMS_SUCCESSFUL)
    297     {
    298         if (iop)
    299             rtems_libio_free(iop);
    300         return rtems_libio_errno(rc);
    301     }
    302    
    303     return iop - rtems_libio_iops;
    304 }
    305    
    306 int
    307 __rtems_close(
    308     int  fd
    309   )   
    310 {
    311     rtems_status_code rc;
    312     rtems_driver_name_t *np;
    313     rtems_libio_t *iop;
    314     rtems_libio_open_close_args_t args;
    315     int status;
    316 
    317     if (rtems_file_descriptor_type(fd)) {
    318         int (*fp)(int fd);
    319 
    320         fp = handlers[rtems_file_descriptor_type_index(fd)].close;
    321         if (fp == NULL) {
    322             errno = EBADF;
    323             return -1;
    324         }
    325         status = (*fp)(fd);
    326         return status;
    327     }
    328     iop = rtems_libio_iop(fd);
    329     rtems_libio_check_fd(fd);
    330 
    331     np = iop->driver;
    332 
    333     args.iop = iop;
    334     args.flags = 0;
    335     args.mode = 0;
    336    
    337     rc = rtems_io_close(np->major, np->minor, (void *) &args);
    338 
    339     rtems_libio_free(iop);
    340 
    341     if (rc != RTEMS_SUCCESSFUL)
    342         return rtems_libio_errno(rc);
    343     return 0;
    344 }
    345    
    346 int
    347 __rtems_read(
    348     int       fd,
    349     void *    buffer,
    350     unsigned32 count
    351   )
    352 {
    353     rtems_status_code rc;
    354     rtems_driver_name_t *np;
    355     rtems_libio_t *iop;
    356     rtems_libio_rw_args_t args;
    357 
    358     if (rtems_file_descriptor_type(fd)) {
    359         int (*fp)(int fd, void *buffer, unsigned32 count);
    360 
    361         fp = handlers[rtems_file_descriptor_type_index(fd)].read;
    362         if (fp == NULL) {
    363             errno = EBADF;
    364             return -1;
    365         }
    366         return (*fp)(fd, buffer, count);
    367     }
    368     iop = rtems_libio_iop(fd);
    369     rtems_libio_check_fd(fd);
    370     rtems_libio_check_buffer(buffer);
    371     rtems_libio_check_count(count);
    372     rtems_libio_check_permissions(iop, LIBIO_FLAGS_READ);
    373 
    374     np = iop->driver;
    375 
    376     args.iop = iop;
    377     args.offset = iop->offset;
    378     args.buffer = buffer;
    379     args.count = count;
    380     args.flags = iop->flags;
    381     args.bytes_moved = 0;
    382 
    383     rc = rtems_io_read(np->major, np->minor, (void *) &args);
    384 
    385     iop->offset += args.bytes_moved;
    386 
    387     if (rc != RTEMS_SUCCESSFUL)
    388         return rtems_libio_errno(rc);
    389 
    390     return args.bytes_moved;
    391 }
    392 
    393 int
    394 __rtems_write(
    395     int         fd,
    396     const void *buffer,
    397     unsigned32  count
    398   )
    399 {
    400     rtems_status_code rc;
    401     rtems_driver_name_t *np;
    402     rtems_libio_t *iop;
    403     rtems_libio_rw_args_t args;
    404 
    405     if (rtems_file_descriptor_type(fd)) {
    406         int (*fp)(int fd, const void *buffer, unsigned32 count);
    407 
    408         fp = handlers[rtems_file_descriptor_type_index(fd)].write;
    409         if (fp == NULL) {
    410             errno = EBADF;
    411             return -1;
    412         }
    413         return (*fp)(fd, buffer, count);
    414     }
    415     iop = rtems_libio_iop(fd);
    416     rtems_libio_check_fd(fd);
    417     rtems_libio_check_buffer(buffer);
    418     rtems_libio_check_count(count);
    419     rtems_libio_check_permissions(iop, LIBIO_FLAGS_WRITE);
    420 
    421     np = iop->driver;
    422 
    423     args.iop = iop;
    424     args.offset = iop->offset;
    425     args.buffer = (void *) buffer;
    426     args.count = count;
    427     args.flags = iop->flags;
    428     args.bytes_moved = 0;
    429 
    430     rc = rtems_io_write(np->major, np->minor, (void *) &args);
    431 
    432     iop->offset += args.bytes_moved;
    433 
    434     if (rc != RTEMS_SUCCESSFUL)
    435         return rtems_libio_errno(rc);
    436 
    437     return args.bytes_moved;
    438 }
    439 
    440 int
    441 __rtems_ioctl(
    442     int         fd,
    443     unsigned32  command,
    444     void *      buffer)
    445 {
    446     rtems_status_code rc;
    447     rtems_driver_name_t *np;
    448     rtems_libio_t *iop;
    449     rtems_libio_ioctl_args_t args;
    450 
    451     if (rtems_file_descriptor_type(fd)) {
    452         int (*fp)(int fd, unsigned32 command, void *buffer);
    453 
    454         fp = handlers[rtems_file_descriptor_type_index(fd)].ioctl;
    455         if (fp == NULL) {
    456             errno = EBADF;
    457             return -1;
    458         }
    459         return (*fp)(fd, command, buffer);
    460     }
    461     iop = rtems_libio_iop(fd);
    462     rtems_libio_check_fd(fd);
    463 
    464     np = iop->driver;
    465 
    466     args.iop = iop;
    467     args.command = command;
    468     args.buffer = buffer;
    469 
    470     rc = rtems_io_control(np->major, np->minor, (void *) &args);
    471 
    472     if (rc != RTEMS_SUCCESSFUL)
    473         return rtems_libio_errno(rc);
    474 
    475     return args.ioctl_return;
    476 }
    477    
    478 /*
    479  * internal only??
    480  */
    481 
    482 
    483 int
    484 __rtems_lseek(
    485     int                  fd,
    486     rtems_libio_offset_t offset,
    487     int                  whence
    488   )   
    489 {
    490     rtems_libio_t *iop;
    491 
    492     if (rtems_file_descriptor_type(fd)) {
    493         int (*fp)(int fd, rtems_libio_offset_t offset, int whence);
    494 
    495         fp = handlers[rtems_file_descriptor_type_index(fd)].lseek;
    496         if (fp == NULL) {
    497             errno = EBADF;
    498             return -1;
    499         }
    500         return (*fp)(fd, offset, whence);
    501     }
    502     iop = rtems_libio_iop(fd);
    503     rtems_libio_check_fd(fd);
    504 
    505     switch (whence)
    506     {
    507         case SEEK_SET:
    508             iop->offset = offset;
    509             break;
    510 
    511         case SEEK_CUR:
    512             iop->offset += offset;
    513             break;
    514 
    515         case SEEK_END:
    516             iop->offset = iop->size - offset;
    517             break;
    518 
    519         default:
    520             errno = EINVAL;
    521             return -1;
    522     }
    523     return 0;
    524 }
     290  }
     291
     292  rtems_semaphore_release( rtems_libio_semaphore );
     293
     294  return result;
     295}

  • c/src/lib/libc/libio.h

    rcd3fb80 r07a3253d  
    11/*
    2  * General purpose communication channel for RTEMS to allow UNIX/POSIX
    3  *    system call behavior on top of RTEMS IO devices.
     2 *  System call and file system interface definition
    43 *
    5  * TODO
    6  *      stat(2)
    7  *      unlink(2)
    8  *      rename(2)
     4 *  General purpose communication channel for RTEMS to allow UNIX/POSIX
     5 *  system call behavior under RTEMS.  Initially this supported only
     6 *  IO to devices but has since been enhanced to support networking
     7 *  and support for mounted file systems.
     8 *
     9 *  COPYRIGHT (c) 1989-1998.
     10 *  On-Line Applications Research Corporation (OAR).
     11 *  Copyright assigned to U.S. Government, 1994.
     12 *
     13 *  The license and distribution terms for this file may be
     14 *  found in the file LICENSE in this distribution or at
     15 *  http://www.OARcorp.com/rtems/license.html.
    916 *
    1017 *  $Id$
    … …  
    1623#include <sys/stat.h>
    1724
    18 typedef unsigned32 rtems_libio_offset_t;
    19 
    20 /*
    21  * An open file data structure, indexed by 'fd'
    22  * TODO:
    23  *    should really have a separate per/file data structure that this
    24  *    points to (eg: size, offset, driver, pathname should be in that)
    25  */
    26 
    27 typedef struct {
    28     rtems_driver_name_t *driver;
    29     rtems_libio_offset_t size;          /* size of file */
    30     rtems_libio_offset_t offset;        /* current offset into the file */
    31     unsigned32           flags;
    32     char                *pathname;      /* opened pathname */
    33     Objects_Id           sem;
    34     unsigned32           data0;         /* private to "driver" */
    35     void                *data1;         /* ... */
    36 } rtems_libio_t;
    37 
    38 
    39 /*
    40  * param block for read/write
    41  * Note: it must include 'offset' instead of using iop's offset since
    42  *       we can have multiple outstanding i/o's on a device.
     25/*
     26 *  Define data types which must be constructed using forward references.
     27 */
     28
     29typedef struct rtems_libio_tt rtems_libio_t;
     30
     31struct rtems_filesystem_location_info_tt;
     32typedef struct rtems_filesystem_location_info_tt
     33    rtems_filesystem_location_info_t;
     34
     35struct rtems_filesystem_mount_table_entry_tt;
     36typedef struct rtems_filesystem_mount_table_entry_tt
     37    rtems_filesystem_mount_table_entry_t;
     38
     39/*
     40 * Valid RTEMS file types.
     41 */
     42typedef enum {
     43  RTEMS_FILESYSTEM_DIRECTORY,
     44  RTEMS_FILESYSTEM_DEVICE,
     45  RTEMS_FILESYSTEM_HARD_LINK,
     46  RTEMS_FILESYSTEM_SYM_LINK,
     47  RTEMS_FILESYSTEM_MEMORY_FILE
     48} rtems_filesystem_node_types_t;
     49
     50/*
     51 *  File Handler Operations Table
     52 */
     53
     54typedef int (*rtems_filesystem_open_t)(
     55  rtems_libio_t *iop,
     56  const char    *pathname,
     57  unsigned32     flag,
     58  unsigned32     mode
     59);
     60
     61typedef int (*rtems_filesystem_close_t)(
     62  rtems_libio_t *iop
     63);
     64
     65typedef int (*rtems_filesystem_read_t)(
     66  rtems_libio_t *iop,
     67  void          *buffer,
     68  unsigned32     count
     69);
     70
     71typedef int (*rtems_filesystem_write_t)(
     72  rtems_libio_t *iop,
     73  const void    *buffer,
     74  unsigned32    count
     75);
     76
     77typedef int (*rtems_filesystem_ioctl_t)(
     78  rtems_libio_t *iop,
     79  unsigned32     command,
     80  void          *buffer
     81);
     82
     83typedef int (*rtems_filesystem_lseek_t)(
     84  rtems_libio_t *iop,
     85  off_t          length,
     86  int            whence
     87);
     88
     89typedef int (*rtems_filesystem_fstat_t)(
     90  rtems_filesystem_location_info_t *loc,
     91  struct stat                      *buf
     92);
     93
     94typedef int (*rtems_filesystem_fchmod_t)(
     95  rtems_filesystem_location_info_t *loc,
     96  mode_t                            mode
     97);
     98
     99typedef int (*rtems_filesystem_ftruncate_t)(
     100  rtems_libio_t *iop,
     101  off_t          length
     102);
     103
     104typedef int (*rtems_filesystem_fpathconf_t)(
     105  rtems_libio_t *iop,
     106  int name
     107);
     108
     109typedef int (*rtems_filesystem_fsync_t)(
     110  rtems_libio_t *iop
     111);
     112
     113typedef int (*rtems_filesystem_fdatasync_t)(
     114  rtems_libio_t *iop
     115);
     116
     117typedef struct {
     118    rtems_filesystem_open_t         open;
     119    rtems_filesystem_close_t        close;
     120    rtems_filesystem_read_t         read;
     121    rtems_filesystem_write_t        write;
     122    rtems_filesystem_ioctl_t        ioctl;
     123    rtems_filesystem_lseek_t        lseek;
     124    rtems_filesystem_fstat_t        fstat;
     125    rtems_filesystem_fchmod_t       fchmod;
     126    rtems_filesystem_ftruncate_t    ftruncate;
     127    rtems_filesystem_fpathconf_t    fpathconf;
     128    rtems_filesystem_fsync_t        fsync;
     129    rtems_filesystem_fdatasync_t    fdatasync;
     130} rtems_filesystem_file_handlers_r;
     131
     132/*
     133 *  File System Operations Table
     134 */
     135
     136/*
     137 *  XXX
     138 *  This routine does not allocate any space and rtems_filesystem_freenode_t
     139 *  is not called by the generic after calling this routine.
     140 *  ie. node_access does not have to contain valid data when the
     141 *      routine returns.
     142 */
     143
     144typedef int (*rtems_filesystem_mknod_t)(
     145   const char                        *path,       /* IN */
     146   mode_t                             mode,       /* IN */
     147   dev_t                              dev,        /* IN */
     148   rtems_filesystem_location_info_t  *pathloc     /* IN/OUT */
     149);
     150
     151/*
     152 *  rtems_filesystem_freenode_t must be called by the generic after
     153 *  calling this routine
     154 */
     155
     156typedef int (*rtems_filesystem_evalpath_t)(
     157  const char                        *pathname,      /* IN     */
     158  int                                flags,         /* IN     */
     159  rtems_filesystem_location_info_t  *pathloc        /* IN/OUT */
     160);
     161
     162typedef int (*rtems_filesystem_evalmake_t)(
     163   const char                       *path,       /* IN */
     164   rtems_filesystem_location_info_t *pathloc,    /* IN/OUT */
     165   const char                      **name        /* OUT    */
     166);
     167
     168typedef int (*rtems_filesystem_link_t)(
     169 rtems_filesystem_location_info_t  *to_loc,      /* IN */
     170 rtems_filesystem_location_info_t  *parent_loc,  /* IN */
     171 const char                        *name         /* IN */
     172);
     173
     174typedef int (*rtems_filesystem_unlink_t)(
     175 rtems_filesystem_location_info_t  *pathloc       /* IN */
     176);
     177
     178typedef int (*rtems_filesystem_chown_t)(
     179 rtems_filesystem_location_info_t  *pathloc,       /* IN */
     180 uid_t                              owner,         /* IN */
     181 gid_t                              group          /* IN */
     182);
     183
     184typedef int (*rtems_filesystem_freenode_t)(
     185 rtems_filesystem_location_info_t      *pathloc       /* IN */
     186);
     187
     188typedef int (*rtems_filesystem_rmnod_t)(
     189 rtems_filesystem_location_info_t      *pathloc       /* IN */
     190);
     191
     192typedef int (* rtems_filesystem_mount_t ) (
     193   rtems_filesystem_mount_table_entry_t *mt_entry     /* in */
     194);
     195
     196typedef int (* rtems_filesystem_fsmount_me_t )(
     197   rtems_filesystem_mount_table_entry_t *mt_entry
     198);
     199
     200typedef int (* rtems_filesystem_unmount_t ) (
     201   rtems_filesystem_mount_table_entry_t *mt_entry     /* in */
     202);
     203
     204typedef int (* rtems_filesystem_fsunmount_me_t ) (
     205   rtems_filesystem_mount_table_entry_t *mt_entry    /* in */
     206);
     207
     208typedef rtems_filesystem_node_types_t (* rtems_filesystem_node_type_t) (
     209  rtems_filesystem_location_info_t    *pathloc      /* in */
     210);
     211
     212typedef int (* rtems_filesystem_utime_t)(
     213  rtems_filesystem_location_info_t  *pathloc,       /* IN */
     214  time_t                             actime,        /* IN */
     215  time_t                             modtime        /* IN */
     216);
     217
     218typedef int (*rtems_filesystem_evaluate_link_t)(
     219  rtems_filesystem_location_info_t *pathloc,     /* IN/OUT */
     220  int                               flags        /* IN     */
     221);
     222
     223typedef int (*rtems_filesystem_symlink_t)(
     224 rtems_filesystem_location_info_t  *loc,         /* IN */
     225 const char                        *link_name,   /* IN */
     226 const char                        *node_name
     227);
     228
     229typedef int (*rtems_filesystem_readlink_t)(
     230 rtems_filesystem_location_info_t  *loc,     /* IN  */       
     231 char                              *buf,     /* OUT */       
     232 size_t                            bufsize   
     233);
     234
     235/*
     236 * operations table that must be defined for every file system.
     237 */
     238
     239/*
     240 * File system types
     241 */
     242typedef struct {
     243    rtems_filesystem_evalpath_t      evalpath;
     244    rtems_filesystem_evalmake_t      evalformake;
     245    rtems_filesystem_link_t          link;
     246    rtems_filesystem_unlink_t        unlink;
     247    rtems_filesystem_node_type_t     node_type;
     248    rtems_filesystem_mknod_t         mknod;
     249    rtems_filesystem_rmnod_t         rmnod;
     250    rtems_filesystem_chown_t         chown;
     251    rtems_filesystem_freenode_t      freenod;
     252    rtems_filesystem_mount_t         mount;
     253    rtems_filesystem_fsmount_me_t    fsmount_me;
     254    rtems_filesystem_unmount_t       unmount;
     255    rtems_filesystem_fsunmount_me_t  fsunmount_me;
     256    rtems_filesystem_utime_t         utime;
     257    rtems_filesystem_evaluate_link_t eval_link;
     258    rtems_filesystem_symlink_t       symlink;
     259    rtems_filesystem_readlink_t      readlink;
     260} rtems_filesystem_operations_table;
     261
     262#define IMFS_FILE_SYSTEM IMFS_ops
     263extern rtems_filesystem_operations_table  IMFS_ops;
     264
     265
     266/*
     267 * Structure used to determine a location/filesystem in the tree.
     268 */
     269
     270struct rtems_filesystem_location_info_tt
     271{
     272  void                                   *node_access;
     273  rtems_filesystem_file_handlers_r       *handlers;
     274  rtems_filesystem_operations_table      *ops;
     275  rtems_filesystem_mount_table_entry_t   *mt_entry;
     276};
     277
     278/*
     279 *  Structure used to contain file system specific information which
     280 *  is required to support fpathconf().
     281 */
     282
     283typedef struct {
     284  int    link_max;
     285  int    max_canon;
     286  int    max_input;
     287  int    name_max;
     288  int    path_max;
     289  int    pipe_buf;
     290  int    posix_async_io;
     291  int    posix_chown_restrictions;
     292  int    posix_no_trunc;
     293  int    posix_prio_io;
     294  int    posix_sync_io;
     295  int    posix_vdisable;
     296} rtems_filesystem_limits_and_options_t;
     297
     298/*
     299 * Structure for a mount table entry.
     300 */
     301
     302struct rtems_filesystem_mount_table_entry_tt{
     303  Chain_Node                             Node;
     304  rtems_filesystem_location_info_t       mt_point_node;
     305  rtems_filesystem_location_info_t       mt_fs_root;
     306  int                                    options;
     307  void                                  *fs_info;
     308
     309  rtems_filesystem_limits_and_options_t  pathconf_limits_and_options;
     310
     311  /*
     312   *  When someone adds a mounted filesystem on a real device,
     313   *  this will need to be used.
     314   *
     315   *  The best option long term for this is probably an open file descriptor.
     316   */
     317  char                                  *dev;
     318};
     319
     320/*
     321 *  Valid RTEMS file systems options
     322 */
     323
     324typedef enum
     325{
     326  RTEMS_FILESYSTEM_READ_ONLY,
     327  RTEMS_FILESYSTEM_READ_WRITE_ONLY,
     328  RTEMS_FILESYSTEM_BAD_OPTIONS
     329} rtems_filesystem_options_t;
     330
     331
     332/*
     333 *  An open file data structure, indexed by 'fd'
     334 *  TODO:
     335 *     should really have a separate per/file data structure that this
     336 *     points to (eg: size, offset, driver, pathname should be in that)
     337 */
     338
     339struct rtems_libio_tt {
     340    rtems_driver_name_t              *driver;
     341    off_t                             size;      /* size of file */
     342    off_t                             offset;    /* current offset into file */
     343    unsigned32                        flags;
     344    rtems_filesystem_location_info_t  pathinfo;
     345    Objects_Id                        sem;     
     346    unsigned32                        data0;     /* private to "driver" */
     347    void                             *data1;     /* ... */
     348    void                             *file_info; /* used by file handlers */
     349    rtems_filesystem_file_handlers_r *handlers;  /* type specific handlers */
     350};
     351
     352/*
     353 *  param block for read/write
     354 *  Note: it must include 'offset' instead of using iop's offset since
     355 *        we can have multiple outstanding i/o's on a device.
    43356 */
    44357
    45358typedef struct {
    46359    rtems_libio_t          *iop;
    47     rtems_libio_offset_t    offset;
     360    off_t                   offset;
    48361    unsigned8              *buffer;
    49362    unsigned32              count;
    … …  
    53366
    54367/*
    55  * param block for open/close
     368 *  param block for open/close
    56369 */
    57370
    … …  
    63376
    64377/*
    65  * param block for ioctl
     378 *  param block for ioctl
    66379 */
    67380
    … …  
    73386} rtems_libio_ioctl_args_t;
    74387
    75 
    76 /*
    77  * Values for 'flag'
     388/*
     389 *  Values for 'flag'
    78390 */
    79391
    … …  
    85397#define LIBIO_FLAGS_APPEND        0x0200  /* all writes append */
    86398#define LIBIO_FLAGS_CREATE        0x0400  /* create file */
     399#define LIBIO_FLAGS_CLOSE_ON_EXEC 0x0800  /* close on process exec() */
    87400
    88401#define LIBIO_FLAGS_READ_WRITE    (LIBIO_FLAGS_READ | LIBIO_FLAGS_WRITE)
    89402
     403
    90404void rtems_libio_init(void);
    91405
    92 int __rtems_open(const char  *pathname, unsigned32 flag, unsigned32 mode);
    93 int __rtems_close(int  fd);
    94 int __rtems_read(int fd, void *buffer, unsigned32 count);
    95 int __rtems_write(int fd, const void *buffer, unsigned32 count);
    96 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
    97 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
    98 int __rtems_fstat(int _fd, struct stat* _sbuf);
    99 
    100 /*
    101  * External I/O handlers
    102  */
    103 typedef struct {
    104     int (*open)(const char  *pathname, unsigned32 flag, unsigned32 mode);
    105     int (*close)(int  fd);
    106     int (*read)(int fd, void *buffer, unsigned32 count);
    107     int (*write)(int fd, const void *buffer, unsigned32 count);
    108     int (*ioctl)(int fd, unsigned32  command, void *buffer);
    109     int (*lseek)(int fd, rtems_libio_offset_t offset, int whence);
     406/*
     407 *  External I/O handlers
     408 */
     409
     410typedef int (*rtems_libio_open_t)(
     411  const char  *pathname,
     412  unsigned32  flag,
     413  unsigned32  mode
     414);
     415
     416typedef int (*rtems_libio_close_t)(
     417  int  fd
     418);
     419
     420typedef int (*rtems_libio_read_t)(
     421  int         fd,
     422  void       *buffer,
     423  unsigned32  count
     424);
     425
     426typedef int (*rtems_libio_write_t)(
     427  int         fd,
     428  const void *buffer,
     429  unsigned32  count
     430);
     431
     432typedef int (*rtems_libio_ioctl_t)(
     433  int         fd,
     434  unsigned32  command,
     435  void       *buffer
     436);
     437
     438typedef int (*rtems_libio_lseek_t)(
     439  int    fd,
     440  off_t  offset,
     441  int    whence
     442);
     443
     444typedef struct {
     445    rtems_libio_open_t   open;
     446    rtems_libio_close_t  close;
     447    rtems_libio_read_t   read;
     448    rtems_libio_write_t  write;
     449    rtems_libio_ioctl_t  ioctl;
     450    rtems_libio_lseek_t  lseek;
    110451} rtems_libio_handler_t;
    111452
    112 void rtems_register_libio_handler(int handler_flag,
    113                                  const rtems_libio_handler_t *handler);
     453/*
     454 *  Register a set of external handlers
     455 */
     456
     457void rtems_register_libio_handler(
     458  int                          handler_flag,
     459  const rtems_libio_handler_t *handler
     460);
     461
     462/*
     463 *  Macros to assist in management of external IO handlers.
     464 */
    114465
    115466#define RTEMS_FILE_DESCRIPTOR_TYPE_FILE         0x0000
    … …  
    129480
    130481/*
     482 *  The following macros are used to build up the permissions sets
     483 *  used to check permissions.  These are similar in style to the
     484 *  mode_t bits and should stay compatible with them.
     485 */
     486
     487#define RTEMS_LIBIO_PERMS_READ   S_IROTH
     488#define RTEMS_LIBIO_PERMS_WRITE  S_IWOTH
     489#define RTEMS_LIBIO_PERMS_RDWR   (S_IROTH|S_IWOTH)
     490#define RTEMS_LIBIO_PERMS_EXEC   S_IXOTH
     491#define RTEMS_LIBIO_PERMS_SEARCH RTEMS_LIBIO_PERMS_EXEC
     492#define RTEMS_LIBIO_PERMS_RWX    S_IRWXO
     493
     494/*
     495 *  Macros
     496 */
     497
     498#define rtems_filesystem_make_dev_t( _major, _minor ) \
     499  ((((dev_t)(_major)) << 32) | (dev_t)(_minor))
     500
     501#define rtems_filesystem_split_dev_t( _dev, _major, _minor ) \
     502  do { \
     503    (_major) = (rtems_device_major_number) ((_dev) >> 32); \
     504    (_minor) = (rtems_device_minor_number) ((_dev) & 0xFFFFFFFF); \
     505  } while(0)
     506
     507/*
     508 * Verifies that the permission flag is valid.
     509 */
     510#define rtems_libio_is_valid_perms( _perm )     \
     511 (~ ((~RTEMS_LIBIO_PERMS_RWX) & _perm ))
     512
     513
     514/*
     515 *  Prototypes for filesystem
     516 */
     517
     518void rtems_filesystem_initialize( void );
     519
     520
     521/*
    131522 * Callbacks from TERMIOS routines to device-dependent code
    132523 */
     524
    133525#include <termios.h>
     526
    134527typedef struct rtems_termios_callbacks {
    135   int       (*firstOpen)(int major, int minor, void *arg);
    136   int       (*lastClose)(int major, int minor, void *arg);
    137   int       (*pollRead)(int minor);
    138   int       (*write)(int minor, const char *buf, int len);
    139   int       (*setAttributes)(int minor, const struct termios *t);
    140   int       (*stopRemoteTx)(int minor);
    141   int       (*startRemoteTx)(int minor);
    142   int       outputUsesInterrupts;
     528  int    (*firstOpen)(int major, int minor, void *arg);
     529  int    (*lastClose)(int major, int minor, void *arg);
     530  int    (*pollRead)(int minor);
     531  int    (*write)(int minor, const char *buf, int len);
     532  int    (*setAttributes)(int minor, const struct termios *t);
     533  int    (*stopRemoteTx)(int minor);
     534  int    (*startRemoteTx)(int minor);
     535  int    outputUsesInterrupts;
    143536} rtems_termios_callbacks;
    144537
    145538/*
    146  * Device-independent TERMIOS routines
    147  */
     539 *  Device-independent TERMIOS routines
     540 */
     541
    148542void rtems_termios_initialize (void);
     543
    149544rtems_status_code rtems_termios_open (
    150545  rtems_device_major_number      major,
    … …  
    152547  void                          *arg,
    153548  const rtems_termios_callbacks *callbacks
    154   );
    155 rtems_status_code rtems_termios_close (void *arg);
    156 rtems_status_code rtems_termios_read (void *arg);
    157 rtems_status_code rtems_termios_write (void *arg);
    158 rtems_status_code rtems_termios_ioctl (void *arg);
    159 int rtems_termios_enqueue_raw_characters (void *ttyp, char *buf, int len);
    160 int rtems_termios_dequeue_characters (void *ttyp, int len);
     549);
     550
     551rtems_status_code rtems_termios_close(
     552  void *arg
     553);
     554
     555rtems_status_code rtems_termios_read(
     556  void *arg
     557);
     558
     559rtems_status_code rtems_termios_write(
     560  void *arg
     561);
     562
     563rtems_status_code rtems_termios_ioctl(
     564  void *arg
     565);
     566
     567int rtems_termios_enqueue_raw_characters(
     568  void *ttyp,
     569  char *buf,
     570  int   len
     571);
     572
     573int rtems_termios_dequeue_characters(
     574  void *ttyp,
     575  int   len
     576);
     577
    161578void rtems_termios_reserve_resources(
    162579  rtems_configuration_table *configuration,
    … …  
    164581);
    165582
     583int unmount(
     584  const char *mount_path
     585);
     586
     587int mount(
     588  rtems_filesystem_mount_table_entry_t **mt_entry,
     589  rtems_filesystem_operations_table    *fs_ops,
     590  char                                 *fsoptions,
     591  char                                 *device,
     592  char                                 *mount_point
     593);
     594
    166595#endif /* _RTEMS_LIBIO_H */

  • c/src/lib/libc/malloc.c

    rcd3fb80 r07a3253d  
    136136#ifdef MALLOC_STATS
    137137  /* zero all the stats */
    138   (void) memset(&rtems_malloc_stats, 0, sizeof(rtems_malloc_stats));
     138  (void) memset( &rtems_malloc_stats, 0, sizeof(rtems_malloc_stats) );
    139139#endif
    140140 
    … …  
    221221      unsigned32 actual_size;
    222222      unsigned32 current_depth;
    223       status = rtems_region_get_segment_size(RTEMS_Malloc_Heap, return_this, &actual_size);
     223      status = rtems_region_get_segment_size(
     224                   RTEMS_Malloc_Heap, return_this, &actual_size);
    224225      MSBUMP(lifetime_allocated, actual_size);
    225       current_depth = rtems_malloc_stats.lifetime_allocated - rtems_malloc_stats.lifetime_freed;
     226      current_depth = rtems_malloc_stats.lifetime_allocated -
     227                   rtems_malloc_stats.lifetime_freed;
    226228      if (current_depth > rtems_malloc_stats.max_depth)
    227229          rtems_malloc_stats.max_depth = current_depth;
    … …  
    336338void malloc_dump(void)
    337339{
    338     unsigned32 allocated = rtems_malloc_stats.lifetime_allocated - rtems_malloc_stats.lifetime_freed;
     340    unsigned32 allocated = rtems_malloc_stats.lifetime_allocated -
     341                     rtems_malloc_stats.lifetime_freed;
    339342
    340343    printf("Malloc stats\n");
    341     printf("  avail:%uk  allocated:%uk (%d%%) max:%uk (%d%%) lifetime:%Luk freed:%Luk\n",
     344    printf("  avail:%uk  allocated:%uk (%d%%) "
     345              "max:%uk (%d%%) lifetime:%Luk freed:%Luk\n",
    342346           (unsigned int) rtems_malloc_stats.space_available / 1024,
    343347           (unsigned int) allocated / 1024,

  • c/src/lib/libc/newlibc.c

    rcd3fb80 r07a3253d  
    1 
    2 /*
     1/*
     2 *  Implementation of hooks for the CYGNUS newlib libc
     3 *  These hooks set things up so that:
     4 *       + '_REENT' is switched at task switch time.
     5 *
    36 *  COPYRIGHT (c) 1994 by Division Incorporated
    47 *
    … …  
    69 *  found in the file LICENSE in this distribution or at
    710 *  http://www.OARcorp.com/rtems/license.html.
    8  *
    9  *  Description:
    10  *      Implementation of hooks for the CYGNUS newlib libc
    11  *      These hooks set things up so that:
    12  *              '_REENT' is switched at task switch time.
    13  *
    14  *
    15  *  TODO:
    16  *
    17  *  NOTE:
    1811 *
    1912 *  $Id$
    … …  
    4841#endif
    4942
    50 #include "internal.h"
     43/*
     44 *  Private routines
     45 */
     46
     47void MY_task_set_note(
     48  rtems_tcb        *tcb,
     49  rtems_unsigned32 notepad,
     50  rtems_unsigned32 note
     51);
     52
     53rtems_unsigned32 MY_task_get_note(
     54  rtems_tcb        *tcb,
     55  rtems_unsigned32  notepad
     56);
     57
    5158
    5259#define LIBC_NOTEPAD RTEMS_NOTEPAD_LAST
    … …  
    305312                              &libc_extension, &extension_id);
    306313        if (rc != RTEMS_SUCCESSFUL)
    307             rtems_fatal_error_occurred(rc);
     314            rtems_fatal_error_occurred( rc );
    308315
    309316        libc_reentrant = reentrant;
    … …  
    354361/* #if !defined(RTEMS_UNIX) && !defined(__GO32__) && !defined(_AM29K) */
    355362#if !defined(RTEMS_UNIX) && !defined(_AM29K)
     363#if !defined(pc386)
    356364void _exit(int status)
    357365{
    … …  
    359367    rtems_shutdown_executive(status);
    360368}
     369#endif
     370
    361371#else
    362372
    … …  
    427437
    428438
    429 #endif
     439/*
     440 *  Newlib Interface Support
     441 *
     442 *  Routines to Access Internal RTEMS Resources without violating
     443 *  kernel visibility.
     444 *
     445 */
     446
     447void MY_task_set_note(
     448  Thread_Control *the_thread,
     449  unsigned32      notepad,
     450  unsigned32      note
     451)
     452{
     453  RTEMS_API_Control    *api;
     454 
     455  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
     456
     457  if ( api )
     458    api->Notepads[ notepad ] = note;
     459}
     460
     461
     462unsigned32 MY_task_get_note(
     463  Thread_Control *the_thread,
     464  unsigned32      notepad
     465)
     466{
     467  RTEMS_API_Control    *api;
     468 
     469  api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
     470
     471  return api->Notepads[ notepad ];
     472}
     473
     474void *MY_CPU_Context_FP_start(
     475  void       *base,
     476  unsigned32  offset
     477)
     478{
     479  return _CPU_Context_Fp_start( base, offset );
     480}
     481#endif

  • c/src/lib/libc/no_libc.c

    rcd3fb80 r07a3253d  
    1 
    2 /*  no_libc.h
    3  *
     1/*
    42 *  This file contains stubs for the reentrancy hooks when
    53 *  an unknown C library is used.
    … …  
    1816
    1917#include <rtems.h>
    20 #if  !defined(RTEMS_NEWLIB) && !defined(RTEMS_UNIX)
     18#if !defined(RTEMS_NEWLIB) && !defined(RTEMS_UNIX)
    2119
    2220#include "libcsupport.h"
    23 #include "internal.h"
    2421
    2522#include <stdlib.h>             /* for free() */
    2623
    27 void
    28 libc_init(int reentrant)
     24void libc_init(
     25  int reentrant
     26)
    2927{
    3028}
    … …  
    3533
    3634
    37 void libc_global_exit(rtems_unsigned32 code)
     35void libc_global_exit(
     36  rtems_unsigned32 code
     37)
    3838{
    3939}
    4040
    41 void _exit(int status)
     41void _exit(
     42  int status
     43)
    4244{
    4345}

  • c/src/lib/libc/opendir.c

    rcd3fb80 r07a3253d  
    22 *  opendir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
    537 */
     38
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)opendir.c   5.11 (Berkeley) 2/23/91";
     41#endif /* LIBC_SCCS and not lint */
    642
    743#include <dirent.h>
    … …  
    1046#include <unistd.h>
    1147
    12 DIR *opendir(
    13   const char *name
    14 )
     48/*
     49 * open a directory.
     50 */
     51DIR *
     52opendir(name)
     53        const char *name;
    1554{
    16   return NULL;
     55        register DIR *dirp;
     56        register int fd;
     57
     58        if ((fd = open(name, 0)) == -1)
     59                return NULL;
     60        if (fcntl(fd, F_SETFD, 1) == -1 ||
     61            (dirp = (DIR *)malloc(sizeof(DIR))) == NULL) {
     62                close (fd);
     63                return NULL;
     64        }
     65        /*
     66         * If CLSIZE is an exact multiple of DIRBLKSIZ, use a CLSIZE
     67         * buffer that it cluster boundary aligned.
     68         * Hopefully this can be a big win someday by allowing page trades
     69         * to user space to be done by getdirentries()
     70         */
     71        dirp->dd_buf = malloc (512);
     72        dirp->dd_len = 512;
     73
     74        if (dirp->dd_buf == NULL) {
     75                close (fd);
     76                return NULL;
     77        }
     78        dirp->dd_fd = fd;
     79        dirp->dd_loc = 0;
     80        dirp->dd_seek = 0;
     81        /*
     82         * Set up seek point for rewinddir.
     83         */
     84        return dirp;
    1785}

  • c/src/lib/libc/pipe.c

    rcd3fb80 r07a3253d  
    1 #include <rtems.h>
    2 
    3 #if defined(RTEMS_NEWLIB)
    41/*
    5  *  RTEMS Dummy _execveImplementation
    6  *
     2 *  pipe() - POSIX 1003.1b 6.1.1 Create an Inter-Process Channel
    73 *
    84 *  COPYRIGHT (c) 1989-1998.
    … …  
    1713 */
    1814
    19 #include <unistd.h>
    2015#include <errno.h>
    2116
    22 int _execve(
    23   const char *path,
    24   char *const argv[],
    25   char *const environ[]
     17int pipe(
     18  int filsdes[2]
    2619)
    2720{
    … …  
    2922  return -1;
    3023}
    31 #endif

  • c/src/lib/libc/readdir.c

    rcd3fb80 r07a3253d  
    22 *  readdir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  This was copied from Newlib 1.8.0.
     5 *
     6 * 
     7 * Copyright (c) 1983 Regents of the University of California.
     8 * All rights reserved.
     9 *
     10 * Redistribution and use in source and binary forms, with or without
     11 * modification, are permitted provided that the following conditions
     12 * are met:
     13 * 1. Redistributions of source code must retain the above copyright
     14 *    notice, this list of conditions and the following disclaimer.
     15 * 2. Redistributions in binary form must reproduce the above copyright
     16 *    notice, this list of conditions and the following disclaimer in the
     17 *    documentation and/or other materials provided with the distribution.
     18 * 3. All advertising materials mentioning features or use of this software
     19 *    must display the following acknowledgement:
     20 *      This product includes software developed by the University of
     21 *      California, Berkeley and its contributors.
     22 * 4. Neither the name of the University nor the names of its contributors
     23 *    may be used to endorse or promote products derived from this software
     24 *    without specific prior written permission.
     25 *
     26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36 * SUCH DAMAGE.
    537 */
     38
     39#if defined(LIBC_SCCS) && !defined(lint)
     40static char sccsid[] = "@(#)readdir.c   5.7 (Berkeley) 6/1/90";
     41#endif /* LIBC_SCCS and not lint */
    642
    743#include <dirent.h>
    844
    9 struct dirent *readdir(
    10   register DIR *dirp
    11 )
    12 {
    13   return NULL;
     45/*
     46 * get next entry in a directory.
     47 */
     48struct dirent *
     49readdir(dirp)
     50register DIR *dirp; {
     51  register struct dirent *dp;
     52 
     53  for (;;) {
     54    if (dirp->dd_loc == 0) {
     55      dirp->dd_size = getdents (dirp->dd_fd,
     56                                dirp->dd_buf,
     57                                dirp->dd_len);
     58     
     59      if (dirp->dd_size <= 0)
     60        return NULL;
     61    }
     62    if (dirp->dd_loc >= dirp->dd_size) {
     63      dirp->dd_loc = 0;
     64      continue;
     65    }
     66    dp = (struct dirent *)(dirp->dd_buf + dirp->dd_loc);
     67    if ((int)dp & 03)   /* bogus pointer check */
     68      return NULL;
     69    if (dp->d_reclen <= 0 ||
     70        dp->d_reclen > dirp->dd_len + 1 - dirp->dd_loc)
     71      return NULL;
     72    dirp->dd_loc += dp->d_reclen;
     73    if (dp->d_ino == 0)
     74      continue;
     75    return (dp);
     76  }
    1477}

  • c/src/lib/libc/rewinddir.c

    rcd3fb80 r07a3253d  
    22 *  rewinddir() - POSIX 1003.1b - XXX
    33 *
    4  *  $Id$
     4 *  COPYRIGHT (c) 1989-1998.
     5 *  On-Line Applications Research Corporation (OAR).
     6 *  Copyright assigned to U.S. Government, 1994.
     7 *
     8 *  The license and distribution terms for this file may be
     9 *  found in the file LICENSE in this distribution or at
     10 *  http://www.OARcorp.com/rtems/license.html.
     11 *
    512 */
    613
    … …  
    1623)
    1724{
    18   errno = ENOSYS;
    19   return -1;
     25  off_t status;
     26
     27  status = lseek( dirp->dd_fd, 0, SEEK_SET );
     28 
     29  if( status == -1 )
     30    return;
     31
     32  dirp->dd_loc = 0;
     33
     34
    2035}

  • c/src/lib/libc/scandir.c

    rcd3fb80 r07a3253d