source: rtems-libbsd/freebsd/sys/sys/conf.h @ 4a8f953

55-freebsd-126-freebsd-12
Last change on this file since 4a8f953 was 4a8f953, checked in by Kevin Kirspel <kevin-kirspel@…>, on 05/04/17 at 12:27:58

Updating FREEBSD for tty support
  • Property mode set to 100644
File size: 12.2 KB
Line 
1/*-
2 * Copyright (c) 1990, 1993
3 *      The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 2000
5 *      Poul-Henning Kamp.  All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *      @(#)conf.h      8.5 (Berkeley) 1/9/95
37 * $FreeBSD$
38 */
39
40#ifndef _SYS_CONF_H_
41#define _SYS_CONF_H_
42
43#ifdef _KERNEL
44#include <sys/eventhandler.h>
45#else
46#include <sys/queue.h>
47#endif
48
49struct snapdata;
50struct devfs_dirent;
51struct cdevsw;
52struct file;
53#ifdef __rtems__
54struct ucred;
55#define RTEMS_CDEV_DIRECTORY "/dev/"
56extern const char rtems_cdev_directory[sizeof(RTEMS_CDEV_DIRECTORY)];
57#endif /* __rtems__ */
58
59struct cdev {
60#ifndef __rtems__
61        void            *si_spare0;
62#endif /* __rtems__ */
63        u_int           si_flags;
64#define SI_ETERNAL      0x0001  /* never destroyed */
65#define SI_ALIAS        0x0002  /* carrier of alias name */
66#define SI_NAMED        0x0004  /* make_dev{_alias} has been called */
67#define SI_CHEAPCLONE   0x0008  /* can be removed_dev'ed when vnode reclaims */
68#define SI_CHILD        0x0010  /* child of another struct cdev **/
69#define SI_DUMPDEV      0x0080  /* is kernel dumpdev */
70#define SI_CLONELIST    0x0200  /* on a clone list */
71#define SI_UNMAPPED     0x0400  /* can handle unmapped I/O */
72#define SI_NOSPLIT      0x0800  /* I/O should not be split up */
73#ifndef __rtems__
74        struct timespec si_atime;
75        struct timespec si_ctime;
76        struct timespec si_mtime;
77        uid_t           si_uid;
78        gid_t           si_gid;
79        mode_t          si_mode;
80        struct ucred    *si_cred;       /* cached clone-time credential */
81#endif /* __rtems__ */
82        int             si_drv0;
83        int             si_refcount;
84        LIST_ENTRY(cdev)        si_list;
85#ifndef __rtems__
86        LIST_ENTRY(cdev)        si_clone;
87#endif /* __rtems__ */
88        LIST_HEAD(, cdev)       si_children;
89        LIST_ENTRY(cdev)        si_siblings;
90        struct cdev *si_parent;
91#ifndef __rtems__
92        struct mount    *si_mountpt;
93#endif /* __rtems__ */
94        void            *si_drv1, *si_drv2;
95        struct cdevsw   *si_devsw;
96#ifndef __rtems__
97        int             si_iosize_max;  /* maximum I/O size (for physio &al) */
98        u_long          si_usecount;
99#endif /* __rtems__ */
100        u_long          si_threadcount;
101#ifndef __rtems__
102        union {
103                struct snapdata *__sid_snapdata;
104        } __si_u;
105#endif /* __rtems__ */
106#ifdef __rtems__
107        char            si_path[sizeof(RTEMS_CDEV_DIRECTORY) - 1];
108#endif /* __rtems__ */
109        char            si_name[SPECNAMELEN + 1];
110};
111
112#define si_snapdata     __si_u.__sid_snapdata
113
114#ifdef _KERNEL
115
116/*
117 * Definitions of device driver entry switches
118 */
119
120struct bio;
121struct buf;
122struct thread;
123struct uio;
124struct knote;
125struct clonedevs;
126struct vm_object;
127struct vnode;
128
129typedef int d_open_t(struct cdev *dev, int oflags, int devtype, struct thread *td);
130typedef int d_fdopen_t(struct cdev *dev, int oflags, struct thread *td, struct file *fp);
131typedef int d_close_t(struct cdev *dev, int fflag, int devtype, struct thread *td);
132typedef void d_strategy_t(struct bio *bp);
133typedef int d_ioctl_t(struct cdev *dev, u_long cmd, caddr_t data,
134                      int fflag, struct thread *td);
135
136typedef int d_read_t(struct cdev *dev, struct uio *uio, int ioflag);
137typedef int d_write_t(struct cdev *dev, struct uio *uio, int ioflag);
138typedef int d_poll_t(struct cdev *dev, int events, struct thread *td);
139typedef int d_kqfilter_t(struct cdev *dev, struct knote *kn);
140typedef int d_mmap_t(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
141                     int nprot, vm_memattr_t *memattr);
142typedef int d_mmap_single_t(struct cdev *cdev, vm_ooffset_t *offset,
143    vm_size_t size, struct vm_object **object, int nprot);
144typedef void d_purge_t(struct cdev *dev);
145
146typedef int dumper_t(
147        void *_priv,            /* Private to the driver. */
148        void *_virtual,         /* Virtual (mapped) address. */
149        vm_offset_t _physical,  /* Physical address of virtual. */
150        off_t _offset,          /* Byte-offset to write at. */
151        size_t _length);        /* Number of bytes to dump. */
152
153#endif /* _KERNEL */
154
155/*
156 * Types for d_flags.
157 */
158#define D_TAPE  0x0001
159#define D_DISK  0x0002
160#define D_TTY   0x0004
161#define D_MEM   0x0008  /* /dev/(k)mem */
162
163#ifdef _KERNEL
164
165#define D_TYPEMASK      0xffff
166
167/*
168 * Flags for d_flags which the drivers can set.
169 */
170#define D_TRACKCLOSE    0x00080000      /* track all closes */
171#define D_MMAP_ANON     0x00100000      /* special treatment in vm_mmap.c */
172#define D_NEEDGIANT     0x00400000      /* driver want Giant */
173#define D_NEEDMINOR     0x00800000      /* driver uses clone_create() */
174
175/*
176 * Version numbers.
177 */
178#define D_VERSION_00    0x20011966
179#define D_VERSION_01    0x17032005      /* Add d_uid,gid,mode & kind */
180#define D_VERSION_02    0x28042009      /* Add d_mmap_single */
181#define D_VERSION_03    0x17122009      /* d_mmap takes memattr,vm_ooffset_t */
182#define D_VERSION       D_VERSION_03
183
184/*
185 * Flags used for internal housekeeping
186 */
187#define D_INIT          0x80000000      /* cdevsw initialized */
188
189/*
190 * Character device switch table
191 */
192struct cdevsw {
193        int                     d_version;
194        u_int                   d_flags;
195        const char              *d_name;
196        d_open_t                *d_open;
197#ifndef __rtems__
198        d_fdopen_t              *d_fdopen;
199#endif /* __rtems__ */
200        d_close_t               *d_close;
201        d_read_t                *d_read;
202        d_write_t               *d_write;
203        d_ioctl_t               *d_ioctl;
204        d_poll_t                *d_poll;
205#ifndef __rtems__
206        d_mmap_t                *d_mmap;
207        d_strategy_t            *d_strategy;
208        dumper_t                *d_dump;
209#endif /* __rtems__ */
210        d_kqfilter_t            *d_kqfilter;
211#ifndef __rtems__
212        d_purge_t               *d_purge;
213        d_mmap_single_t         *d_mmap_single;
214
215        int32_t                 d_spare0[3];
216        void                    *d_spare1[3];
217
218#endif /* __rtems__ */
219        /* These fields should not be messed with by drivers */
220        LIST_HEAD(, cdev)       d_devs;
221#ifndef __rtems__
222        int                     d_spare2;
223#endif /* __rtems__ */
224        union {
225                struct cdevsw           *gianttrick;
226                SLIST_ENTRY(cdevsw)     postfree_list;
227        } __d_giant;
228};
229#define d_gianttrick            __d_giant.gianttrick
230#define d_postfree_list         __d_giant.postfree_list
231
232struct module;
233
234struct devsw_module_data {
235        int     (*chainevh)(struct module *, int, void *); /* next handler */
236        void    *chainarg;      /* arg for next event handler */
237        /* Do not initialize fields hereafter */
238};
239
240#define DEV_MODULE_ORDERED(name, evh, arg, ord)                         \
241static moduledata_t name##_mod = {                                      \
242    #name,                                                              \
243    evh,                                                                \
244    arg                                                                 \
245};                                                                      \
246DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, ord)
247
248#define DEV_MODULE(name, evh, arg)                                      \
249    DEV_MODULE_ORDERED(name, evh, arg, SI_ORDER_MIDDLE)
250
251void clone_setup(struct clonedevs **cdp);
252void clone_cleanup(struct clonedevs **);
253#define CLONE_UNITMASK  0xfffff
254#define CLONE_FLAG0     (CLONE_UNITMASK + 1)
255int clone_create(struct clonedevs **, struct cdevsw *, int *unit, struct cdev **dev, int extra);
256
257#define MAKEDEV_REF             0x01
258#define MAKEDEV_WHTOUT          0x02
259#define MAKEDEV_NOWAIT          0x04
260#define MAKEDEV_WAITOK          0x08
261#define MAKEDEV_ETERNAL         0x10
262#define MAKEDEV_CHECKNAME       0x20
263struct make_dev_args {
264        size_t           mda_size;
265        int              mda_flags;
266        struct cdevsw   *mda_devsw;
267        struct ucred    *mda_cr;
268        uid_t            mda_uid;
269        gid_t            mda_gid;
270        int              mda_mode;
271        int              mda_unit;
272        void            *mda_si_drv1;
273        void            *mda_si_drv2;
274};
275void make_dev_args_init_impl(struct make_dev_args *_args, size_t _sz);
276#define make_dev_args_init(a) \
277    make_dev_args_init_impl((a), sizeof(struct make_dev_args))
278       
279int     count_dev(struct cdev *_dev);
280void    delist_dev(struct cdev *_dev);
281void    destroy_dev(struct cdev *_dev);
282int     destroy_dev_sched(struct cdev *dev);
283int     destroy_dev_sched_cb(struct cdev *dev, void (*cb)(void *), void *arg);
284void    destroy_dev_drain(struct cdevsw *csw);
285void    drain_dev_clone_events(void);
286struct cdevsw *dev_refthread(struct cdev *_dev, int *_ref);
287struct cdevsw *devvn_refthread(struct vnode *vp, struct cdev **devp, int *_ref);
288void    dev_relthread(struct cdev *_dev, int _ref);
289void    dev_depends(struct cdev *_pdev, struct cdev *_cdev);
290void    dev_ref(struct cdev *dev);
291void    dev_refl(struct cdev *dev);
292void    dev_rel(struct cdev *dev);
293struct cdev *make_dev(struct cdevsw *_devsw, int _unit, uid_t _uid, gid_t _gid,
294                int _perms, const char *_fmt, ...) __printflike(6, 7);
295struct cdev *make_dev_cred(struct cdevsw *_devsw, int _unit,
296                struct ucred *_cr, uid_t _uid, gid_t _gid, int _perms,
297                const char *_fmt, ...) __printflike(7, 8);
298struct cdev *make_dev_credf(int _flags,
299                struct cdevsw *_devsw, int _unit,
300                struct ucred *_cr, uid_t _uid, gid_t _gid, int _mode,
301                const char *_fmt, ...) __printflike(8, 9);
302int     make_dev_p(int _flags, struct cdev **_cdev, struct cdevsw *_devsw,
303                struct ucred *_cr, uid_t _uid, gid_t _gid, int _mode,
304                const char *_fmt, ...) __printflike(8, 9);
305int     make_dev_s(struct make_dev_args *_args, struct cdev **_cdev,
306                const char *_fmt, ...) __printflike(3, 4);
307struct cdev *make_dev_alias(struct cdev *_pdev, const char *_fmt, ...)
308                __printflike(2, 3);
309int     make_dev_alias_p(int _flags, struct cdev **_cdev, struct cdev *_pdev,
310                const char *_fmt, ...) __printflike(4, 5);
311int     make_dev_physpath_alias(int _flags, struct cdev **_cdev,
312                struct cdev *_pdev, struct cdev *_old_alias,
313                const char *_physpath);
314void    dev_lock(void);
315void    dev_unlock(void);
316
317#ifdef KLD_MODULE
318#define MAKEDEV_ETERNAL_KLD     0
319#else
320#define MAKEDEV_ETERNAL_KLD     MAKEDEV_ETERNAL
321#endif
322
323#define dev2unit(d)     ((d)->si_drv0)
324
325typedef void d_priv_dtor_t(void *data);
326int     devfs_get_cdevpriv(void **datap);
327int     devfs_set_cdevpriv(void *priv, d_priv_dtor_t *dtr);
328void    devfs_clear_cdevpriv(void);
329
330ino_t   devfs_alloc_cdp_inode(void);
331void    devfs_free_cdp_inode(ino_t ino);
332
333#define         UID_ROOT        0
334#define         UID_BIN         3
335#define         UID_UUCP        66
336#define         UID_NOBODY      65534
337
338#define         GID_WHEEL       0
339#define         GID_KMEM        2
340#define         GID_TTY         4
341#define         GID_OPERATOR    5
342#define         GID_BIN         7
343#define         GID_GAMES       13
344#define         GID_VIDEO       44
345#define         GID_DIALER      68
346#define         GID_NOBODY      65534
347
348typedef void (*dev_clone_fn)(void *arg, struct ucred *cred, char *name,
349            int namelen, struct cdev **result);
350
351int dev_stdclone(char *_name, char **_namep, const char *_stem, int *_unit);
352EVENTHANDLER_DECLARE(dev_clone, dev_clone_fn);
353
354/* Stuff relating to kernel-dump */
355struct kerneldumpcrypto;
356struct kerneldumpheader;
357
358struct dumperinfo {
359        dumper_t *dumper;       /* Dumping function. */
360        void    *priv;          /* Private parts. */
361        u_int   blocksize;      /* Size of block in bytes. */
362        u_int   maxiosize;      /* Max size allowed for an individual I/O */
363        off_t   mediaoffset;    /* Initial offset in bytes. */
364        off_t   mediasize;      /* Space available in bytes. */
365        void    *blockbuf;      /* Buffer for padding shorter dump blocks */
366        struct kerneldumpcrypto *kdc; /* Kernel dump crypto. */
367};
368
369int set_dumper(struct dumperinfo *di, const char *devname, struct thread *td,
370    uint8_t encrypt, const uint8_t *key, uint32_t encryptedkeysize,
371    const uint8_t *encryptedkey);
372int dump_write(struct dumperinfo *, void *, vm_offset_t, off_t, size_t);
373int dump_write_pad(struct dumperinfo *, void *, vm_offset_t, off_t, size_t,
374    size_t *);
375int dump_write_header(struct dumperinfo *di, struct kerneldumpheader *kdh,
376    vm_offset_t physical, off_t offset);
377int dump_write_key(struct dumperinfo *di, vm_offset_t physical, off_t offset);
378int doadump(boolean_t);
379#ifndef __rtems__
380extern int dumping;             /* system is dumping */
381#else /* __rtems__ */
382#define dumping 0
383#endif /* __rtems__ */
384
385#endif /* _KERNEL */
386
387#endif /* !_SYS_CONF_H_ */
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