source:
rtems/cpukit/libfs/src/imfs/ioman.c
@
cf0539b1
Last change on this file since cf0539b1 was cf0539b1, checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:54:17 | |
---|---|
|
|
File size: 2.5 KB |
Line | |
---|---|
1 | /* |
2 | * This file emulates the old Classic RTEMS IO manager directives |
3 | * which register and lookup names using the in-memory filesystem. |
4 | * |
5 | * COPYRIGHT (c) 1989-1999. |
6 | * On-Line Applications Research Corporation (OAR). |
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.rtems.com/license/LICENSE. |
11 | * |
12 | * $Id$ |
13 | */ |
14 | |
15 | #if HAVE_CONFIG_H |
16 | #include "config.h" |
17 | #endif |
18 | |
19 | #include <sys/types.h> |
20 | #include <sys/stat.h> |
21 | #include <fcntl.h> |
22 | #include <unistd.h> |
23 | #include <string.h> |
24 | |
25 | #include <assert.h> |
26 | |
27 | #include <rtems.h> |
28 | #include <rtems/libio_.h> |
29 | #include <rtems/seterr.h> |
30 | #include "imfs.h" |
31 | |
32 | #if defined(__linux__) |
33 | #define S_IFCHR __S_IFCHR |
34 | #endif |
35 | |
36 | /* |
37 | * rtems_io_register_name |
38 | * |
39 | * This assumes that all registered devices are character devices. |
40 | */ |
41 | |
42 | rtems_status_code rtems_io_register_name( |
43 | char *device_name, |
44 | rtems_device_major_number major, |
45 | rtems_device_minor_number minor |
46 | ) |
47 | { |
48 | #if !defined(RTEMS_UNIX) |
49 | int status; |
50 | dev_t dev; |
51 | |
52 | dev = rtems_filesystem_make_dev_t( major, minor ); |
53 | status = mknod( device_name, 0777 | S_IFCHR, dev ); |
54 | |
55 | /* this is the only error returned by the old version */ |
56 | if ( status ) |
57 | return RTEMS_TOO_MANY; |
58 | |
59 | #endif |
60 | return RTEMS_SUCCESSFUL; |
61 | } |
62 | |
63 | /* |
64 | * rtems_io_lookup_name |
65 | * |
66 | * This version is reentrant. |
67 | * |
68 | * XXX - This is dependent upon IMFS and should not be. |
69 | * Suggest adding a filesystem routine to fill in the device_info. |
70 | */ |
71 | |
72 | rtems_status_code rtems_io_lookup_name( |
73 | const char *name, |
74 | rtems_driver_name_t *device_info |
75 | ) |
76 | { |
77 | #if !defined(RTEMS_UNIX) |
78 | IMFS_jnode_t *the_jnode; |
79 | rtems_filesystem_location_info_t loc; |
80 | int result; |
81 | rtems_filesystem_node_types_t node_type; |
82 | |
83 | result = rtems_filesystem_evaluate_path( name, 0x00, &loc, TRUE ); |
84 | the_jnode = loc.node_access; |
85 | |
86 | if ( !loc.ops->node_type_h ) { |
87 | rtems_filesystem_freenode( &loc ); |
88 | rtems_set_errno_and_return_minus_one( ENOTSUP ); |
89 | } |
90 | |
91 | node_type = (*loc.ops->node_type_h)( &loc ); |
92 | |
93 | if ( (result != 0) || node_type != RTEMS_FILESYSTEM_DEVICE ) { |
94 | rtems_filesystem_freenode( &loc ); |
95 | return RTEMS_UNSATISFIED; |
96 | } |
97 | |
98 | device_info->device_name = (char *) name; |
99 | device_info->device_name_length = strlen( name ); |
100 | device_info->major = the_jnode->info.device.major; |
101 | device_info->minor = the_jnode->info.device.minor; |
102 | |
103 | rtems_filesystem_freenode( &loc ); |
104 | |
105 | #endif |
106 | return RTEMS_SUCCESSFUL; |
107 | } |
Note: See TracBrowser
for help on using the repository browser.