source: rtems-libbsd/freebsd/sys/sys/conf.h @ de8a76d

55-freebsd-126-freebsd-12
Last change on this file since de8a76d was de8a76d, checked in by Sebastian Huber <sebastian.huber@…>, on 04/04/17 at 07:36:57

Update to FreeBSD head 2017-04-04

Git mirror commit 642b174daddbd0efd9bb5f242c43f4ab4db6869f.
  • 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        LIST_HEAD(, cdev)       si_children;
88        LIST_ENTRY(cdev)        si_siblings;
89        struct cdev *si_parent;
90        struct mount    *si_mountpt;
91#endif /* __rtems__ */
92        void            *si_drv1, *si_drv2;
93        struct cdevsw   *si_devsw;
94#ifndef __rtems__
95        int             si_iosize_max;  /* maximum I/O size (for physio &al) */
96        u_long          si_usecount;
97#endif /* __rtems__ */
98        u_long          si_threadcount;
99#ifndef __rtems__
100        union {
101                struct snapdata *__sid_snapdata;
102        } __si_u;
103#endif /* __rtems__ */
104#ifdef __rtems__
105        char            si_path[sizeof(RTEMS_CDEV_DIRECTORY) - 1];
106#endif /* __rtems__ */
107        char            si_name[SPECNAMELEN + 1];
108};
109
110#define si_snapdata     __si_u.__sid_snapdata
111
112#ifdef _KERNEL
113
114/*
115 * Definitions of device driver entry switches
116 */
117
118struct bio;
119struct buf;
120struct thread;
121struct uio;
122struct knote;
123struct clonedevs;
124struct vm_object;
125struct vnode;
126
127typedef int d_open_t(struct cdev *dev, int oflags, int devtype, struct thread *td);
128typedef int d_fdopen_t(struct cdev *dev, int oflags, struct thread *td, struct file *fp);
129typedef int d_close_t(struct cdev *dev, int fflag, int devtype, struct thread *td);
130typedef void d_strategy_t(struct bio *bp);
131typedef int d_ioctl_t(struct cdev *dev, u_long cmd, caddr_t data,
132                      int fflag, struct thread *td);
133
134typedef int d_read_t(struct cdev *dev, struct uio *uio, int ioflag);
135typedef int d_write_t(struct cdev *dev, struct uio *uio, int ioflag);
136typedef int d_poll_t(struct cdev *dev, int events, struct thread *td);
137typedef int d_kqfilter_t(struct cdev *dev, struct knote *kn);
138typedef int d_mmap_t(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr,
139                     int nprot, vm_memattr_t *memattr);
140typedef int d_mmap_single_t(struct cdev *cdev, vm_ooffset_t *offset,
141    vm_size_t size, struct vm_object **object, int nprot);
142typedef void d_purge_t(struct cdev *dev);
143
144typedef int dumper_t(
145        void *_priv,            /* Private to the driver. */
146        void *_virtual,         /* Virtual (mapped) address. */
147        vm_offset_t _physical,  /* Physical address of virtual. */
148        off_t _offset,          /* Byte-offset to write at. */
149        size_t _length);        /* Number of bytes to dump. */
150
151#endif /* _KERNEL */
152
153/*
154 * Types for d_flags.
155 */
156#define D_TAPE  0x0001
157#define D_DISK  0x0002
158#define D_TTY   0x0004
159#define D_MEM   0x0008  /* /dev/(k)mem */
160
161#ifdef _KERNEL
162
163#define D_TYPEMASK      0xffff
164
165/*
166 * Flags for d_flags which the drivers can set.
167 */
168#define D_TRACKCLOSE    0x00080000      /* track all closes */
169#define D_MMAP_ANON     0x00100000      /* special treatment in vm_mmap.c */
170#define D_NEEDGIANT     0x00400000      /* driver want Giant */
171#define D_NEEDMINOR     0x00800000      /* driver uses clone_create() */
172
173/*
174 * Version numbers.
175 */
176#define D_VERSION_00    0x20011966
177#define D_VERSION_01    0x17032005      /* Add d_uid,gid,mode & kind */
178#define D_VERSION_02    0x28042009      /* Add d_mmap_single */
179#define D_VERSION_03    0x17122009      /* d_mmap takes memattr,vm_ooffset_t */
180#define D_VERSION       D_VERSION_03
181
182/*
183 * Flags used for internal housekeeping
184 */
185#define D_INIT          0x80000000      /* cdevsw initialized */
186
187/*
188 * Character device switch table
189 */
190struct cdevsw {
191        int                     d_version;
192        u_int                   d_flags;
193        const char              *d_name;
194        d_open_t                *d_open;
195#ifndef __rtems__
196        d_fdopen_t              *d_fdopen;
197#endif /* __rtems__ */
198        d_close_t               *d_close;
199        d_read_t                *d_read;
200        d_write_t               *d_write;
201        d_ioctl_t               *d_ioctl;
202        d_poll_t                *d_poll;
203#ifndef __rtems__
204        d_mmap_t                *d_mmap;
205        d_strategy_t            *d_strategy;
206        dumper_t                *d_dump;
207#endif /* __rtems__ */
208        d_kqfilter_t            *d_kqfilter;
209#ifndef __rtems__
210        d_purge_t               *d_purge;
211        d_mmap_single_t         *d_mmap_single;
212
213        int32_t                 d_spare0[3];
214        void                    *d_spare1[3];
215
216#endif /* __rtems__ */
217        /* These fields should not be messed with by drivers */
218        LIST_HEAD(, cdev)       d_devs;
219#ifndef __rtems__
220        int                     d_spare2;
221#endif /* __rtems__ */
222        union {
223                struct cdevsw           *gianttrick;
224                SLIST_ENTRY(cdevsw)     postfree_list;
225        } __d_giant;
226};
227#define d_gianttrick            __d_giant.gianttrick
228#define d_postfree_list         __d_giant.postfree_list
229
230struct module;
231
232struct devsw_module_data {
233        int     (*chainevh)(struct module *, int, void *); /* next handler */
234        void    *chainarg;      /* arg for next event handler */
235        /* Do not initialize fields hereafter */
236};
237
238#define DEV_MODULE_ORDERED(name, evh, arg, ord)                         \
239static moduledata_t name##_mod = {                                      \
240    #name,                                                              \
241    evh,                                                                \
242    arg                                                                 \
243};                                                                      \
244DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, ord)
245
246#define DEV_MODULE(name, evh, arg)                                      \
247    DEV_MODULE_ORDERED(name, evh, arg, SI_ORDER_MIDDLE)
248
249void clone_setup(struct clonedevs **cdp);
250void clone_cleanup(struct clonedevs **);
251#define CLONE_UNITMASK  0xfffff
252#define CLONE_FLAG0     (CLONE_UNITMASK + 1)
253int clone_create(struct clonedevs **, struct cdevsw *, int *unit, struct cdev **dev, int extra);
254
255#define MAKEDEV_REF             0x01
256#define MAKEDEV_WHTOUT          0x02
257#define MAKEDEV_NOWAIT          0x04
258#define MAKEDEV_WAITOK          0x08
259#define MAKEDEV_ETERNAL         0x10
260#define MAKEDEV_CHECKNAME       0x20
261struct make_dev_args {
262        size_t           mda_size;
263        int              mda_flags;
264        struct cdevsw   *mda_devsw;
265        struct ucred    *mda_cr;
266        uid_t            mda_uid;
267        gid_t            mda_gid;
268        int              mda_mode;
269        int              mda_unit;
270        void            *mda_si_drv1;
271        void            *mda_si_drv2;
272};
273void make_dev_args_init_impl(struct make_dev_args *_args, size_t _sz);
274#define make_dev_args_init(a) \
275    make_dev_args_init_impl((a), sizeof(struct make_dev_args))
276       
277int     count_dev(struct cdev *_dev);
278void    delist_dev(struct cdev *_dev);
279void    destroy_dev(struct cdev *_dev);
280int     destroy_dev_sched(struct cdev *dev);
281int     destroy_dev_sched_cb(struct cdev *dev, void (*cb)(void *), void *arg);
282void    destroy_dev_drain(struct cdevsw *csw);
283void    drain_dev_clone_events(void);
284struct cdevsw *dev_refthread(struct cdev *_dev, int *_ref);
285struct cdevsw *devvn_refthread(struct vnode *vp, struct cdev **devp, int *_ref);
286void    dev_relthread(struct cdev *_dev, int _ref);
287void    dev_depends(struct cdev *_pdev, struct cdev *_cdev);
288void    dev_ref(struct cdev *dev);
289void    dev_refl(struct cdev *dev);
290void    dev_rel(struct cdev *dev);
291struct cdev *make_dev(struct cdevsw *_devsw, int _unit, uid_t _uid, gid_t _gid,
292                int _perms, const char *_fmt, ...) __printflike(6, 7);
293struct cdev *make_dev_cred(struct cdevsw *_devsw, int _unit,
294                struct ucred *_cr, uid_t _uid, gid_t _gid, int _perms,
295                const char *_fmt, ...) __printflike(7, 8);
296struct cdev *make_dev_credf(int _flags,
297                struct cdevsw *_devsw, int _unit,
298                struct ucred *_cr, uid_t _uid, gid_t _gid, int _mode,
299                const char *_fmt, ...) __printflike(8, 9);
300int     make_dev_p(int _flags, struct cdev **_cdev, struct cdevsw *_devsw,
301                struct ucred *_cr, uid_t _uid, gid_t _gid, int _mode,
302                const char *_fmt, ...) __printflike(8, 9);
303int     make_dev_s(struct make_dev_args *_args, struct cdev **_cdev,
304                const char *_fmt, ...) __printflike(3, 4);
305struct cdev *make_dev_alias(struct cdev *_pdev, const char *_fmt, ...)
306                __printflike(2, 3);
307int     make_dev_alias_p(int _flags, struct cdev **_cdev, struct cdev *_pdev,
308                const char *_fmt, ...) __printflike(4, 5);
309int     make_dev_physpath_alias(int _flags, struct cdev **_cdev,
310                struct cdev *_pdev, struct cdev *_old_alias,
311                const char *_physpath);
312void    dev_lock(void);
313void    dev_unlock(void);
314
315#ifdef KLD_MODULE
316#define MAKEDEV_ETERNAL_KLD     0
317#else
318#define MAKEDEV_ETERNAL_KLD     MAKEDEV_ETERNAL
319#endif
320
321#define dev2unit(d)     ((d)->si_drv0)
322
323typedef void d_priv_dtor_t(void *data);
324int     devfs_get_cdevpriv(void **datap);
325int     devfs_set_cdevpriv(void *priv, d_priv_dtor_t *dtr);
326void    devfs_clear_cdevpriv(void);
327
328ino_t   devfs_alloc_cdp_inode(void);
329void    devfs_free_cdp_inode(ino_t ino);
330
331#define         UID_ROOT        0
332#define         UID_BIN         3
333#define         UID_UUCP        66
334#define         UID_NOBODY      65534
335
336#define         GID_WHEEL       0
337#define         GID_KMEM        2
338#define         GID_TTY         4
339#define         GID_OPERATOR    5
340#define         GID_BIN         7
341#define         GID_GAMES       13
342#define         GID_VIDEO       44
343#define         GID_DIALER      68
344#define         GID_NOBODY      65534
345
346typedef void (*dev_clone_fn)(void *arg, struct ucred *cred, char *name,
347            int namelen, struct cdev **result);
348
349int dev_stdclone(char *_name, char **_namep, const char *_stem, int *_unit);
350EVENTHANDLER_DECLARE(dev_clone, dev_clone_fn);
351
352/* Stuff relating to kernel-dump */
353struct kerneldumpcrypto;
354struct kerneldumpheader;
355
356struct dumperinfo {
357        dumper_t *dumper;       /* Dumping function. */
358        void    *priv;          /* Private parts. */
359        u_int   blocksize;      /* Size of block in bytes. */
360        u_int   maxiosize;      /* Max size allowed for an individual I/O */
361        off_t   mediaoffset;    /* Initial offset in bytes. */
362        off_t   mediasize;      /* Space available in bytes. */
363        void    *blockbuf;      /* Buffer for padding shorter dump blocks */
364        struct kerneldumpcrypto *kdc; /* Kernel dump crypto. */
365};
366
367int set_dumper(struct dumperinfo *di, const char *devname, struct thread *td,
368    uint8_t encrypt, const uint8_t *key, uint32_t encryptedkeysize,
369    const uint8_t *encryptedkey);
370int dump_write(struct dumperinfo *, void *, vm_offset_t, off_t, size_t);
371int dump_write_pad(struct dumperinfo *, void *, vm_offset_t, off_t, size_t,
372    size_t *);
373int dump_write_header(struct dumperinfo *di, struct kerneldumpheader *kdh,
374    vm_offset_t physical, off_t offset);
375int dump_write_key(struct dumperinfo *di, vm_offset_t physical, off_t offset);
376int doadump(boolean_t);
377#ifndef __rtems__
378extern int dumping;             /* system is dumping */
379#else /* __rtems__ */
380#define dumping 0
381#endif /* __rtems__ */
382
383#endif /* _KERNEL */
384
385#endif /* !_SYS_CONF_H_ */
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