| /*- |
| * Copyright (c) 1990, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * Copyright (c) 2000 |
| * Poul-Henning Kamp. All rights reserved. |
| * (c) UNIX System Laboratories, Inc. |
| * All or some portions of this file are derived from material licensed |
| * to the University of California by American Telephone and Telegraph |
| * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| * the permission of UNIX System Laboratories, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)conf.h 8.5 (Berkeley) 1/9/95 |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_SYS_CONF_H_ |
| #define _BSD_SYS_CONF_H_ |
| |
| #ifdef _FREEBSD_KERNEL |
| #include <sys/bsd_eventhandler.h> |
| #else |
| #include <sys/bsd_queue.h> |
| #endif |
| |
| struct snapdata; |
| struct devfs_dirent; |
| struct cdevsw; |
| struct file; |
| |
| struct cdev { |
| void *__si_reserved; |
| u_int si_flags; |
| #define SI_ALIAS 0x0002 /* carrier of alias name */ |
| #define SI_NAMED 0x0004 /* make_dev{_alias} has been called */ |
| #define SI_CHEAPCLONE 0x0008 /* can be removed_dev'ed when vnode reclaims */ |
| #define SI_CHILD 0x0010 /* child of another struct cdev **/ |
| #define SI_DEVOPEN 0x0020 /* opened by device */ |
| #define SI_CONSOPEN 0x0040 /* opened by console */ |
| #define SI_DUMPDEV 0x0080 /* is kernel dumpdev */ |
| #define SI_CANDELETE 0x0100 /* can do BIO_DELETE */ |
| #define SI_CLONELIST 0x0200 /* on a clone list */ |
| struct timespec si_atime; |
| struct timespec si_ctime; |
| struct timespec si_mtime; |
| uid_t si_uid; |
| gid_t si_gid; |
| mode_t si_mode; |
| struct ucred *si_cred; /* cached clone-time credential */ |
| int si_drv0; |
| int si_refcount; |
| LIST_ENTRY(cdev) si_list; |
| LIST_ENTRY(cdev) si_clone; |
| LIST_HEAD(, cdev) si_children; |
| LIST_ENTRY(cdev) si_siblings; |
| struct cdev *si_parent; |
| char *si_name; |
| void *si_drv1, *si_drv2; |
| struct cdevsw *si_devsw; |
| int si_iosize_max; /* maximum I/O size (for physio &al) */ |
| u_long si_usecount; |
| u_long si_threadcount; |
| union { |
| struct snapdata *__sid_snapdata; |
| } __si_u; |
| char __si_namebuf[SPECNAMELEN + 1]; |
| }; |
| |
| #define si_snapdata __si_u.__sid_snapdata |
| |
| #ifdef _FREEBSD_KERNEL |
| |
| /* |
| * Definitions of device driver entry switches |
| */ |
| |
| struct bio; |
| struct buf; |
| struct thread; |
| struct uio; |
| struct knote; |
| struct clonedevs; |
| struct vm_object; |
| struct vnode; |
| |
| /* |
| * Note: d_thread_t is provided as a transition aid for those drivers |
| * that treat struct proc/struct thread as an opaque data type and |
| * exist in substantially the same form in both 4.x and 5.x. Writers |
| * of drivers that dips into the d_thread_t structure should use |
| * struct thread or struct proc as appropriate for the version of the |
| * OS they are using. It is provided in lieu of each device driver |
| * inventing its own way of doing this. While it does violate style(9) |
| * in a number of ways, this violation is deemed to be less |
| * important than the benefits that a uniform API between releases |
| * gives. |
| * |
| * Users of struct thread/struct proc that aren't device drivers should |
| * not use d_thread_t. |
| */ |
| |
| typedef struct thread d_thread_t; |
| |
| typedef int d_open_t(struct cdev *dev, int oflags, int devtype, struct thread *td); |
| typedef int d_fdopen_t(struct cdev *dev, int oflags, struct thread *td, struct file *fp); |
| typedef int d_close_t(struct cdev *dev, int fflag, int devtype, struct thread *td); |
| typedef void d_strategy_t(struct bio *bp); |
| typedef int d_ioctl_t(struct cdev *dev, u_long cmd, caddr_t data, |
| int fflag, struct thread *td); |
| |
| typedef int d_read_t(struct cdev *dev, struct uio *uio, int ioflag); |
| typedef int d_write_t(struct cdev *dev, struct uio *uio, int ioflag); |
| typedef int d_poll_t(struct cdev *dev, int events, struct thread *td); |
| typedef int d_kqfilter_t(struct cdev *dev, struct knote *kn); |
| typedef int d_mmap_t(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, |
| int nprot); |
| typedef int d_mmap2_t(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, |
| int nprot, vm_memattr_t *memattr); |
| typedef int d_mmap_single_t(struct cdev *cdev, vm_ooffset_t *offset, |
| vm_size_t size, struct vm_object **object, int nprot); |
| typedef void d_purge_t(struct cdev *dev); |
| |
| typedef int dumper_t( |
| void *_priv, /* Private to the driver. */ |
| void *_virtual, /* Virtual (mapped) address. */ |
| vm_offset_t _physical, /* Physical address of virtual. */ |
| off_t _offset, /* Byte-offset to write at. */ |
| size_t _length); /* Number of bytes to dump. */ |
| |
| #endif /* _FREEBSD_KERNEL */ |
| |
| /* |
| * Types for d_flags. |
| */ |
| #define D_TAPE 0x0001 |
| #define D_DISK 0x0002 |
| #define D_TTY 0x0004 |
| #define D_MEM 0x0008 |
| |
| #ifdef _FREEBSD_KERNEL |
| |
| #define D_TYPEMASK 0xffff |
| |
| /* |
| * Flags for d_flags which the drivers can set. |
| */ |
| #define D_TRACKCLOSE 0x00080000 /* track all closes */ |
| #define D_MMAP_ANON 0x00100000 /* special treatment in vm_mmap.c */ |
| #define D_PSEUDO 0x00200000 /* make_dev() can return NULL */ |
| #define D_NEEDGIANT 0x00400000 /* driver want Giant */ |
| #define D_NEEDMINOR 0x00800000 /* driver uses clone_create() */ |
| #define D_MMAP2 0x01000000 /* driver uses d_mmap2() */ |
| |
| /* |
| * Version numbers. |
| */ |
| #define D_VERSION_00 0x20011966 |
| #define D_VERSION_01 0x17032005 /* Add d_uid,gid,mode & kind */ |
| #define D_VERSION_02 0x28042009 /* Add d_mmap_single */ |
| #define D_VERSION D_VERSION_02 |
| |
| /* |
| * Flags used for internal housekeeping |
| */ |
| #define D_INIT 0x80000000 /* cdevsw initialized */ |
| |
| /* |
| * Character device switch table |
| */ |
| struct cdevsw { |
| int d_version; |
| u_int d_flags; |
| const char *d_name; |
| d_open_t *d_open; |
| d_fdopen_t *d_fdopen; |
| d_close_t *d_close; |
| d_read_t *d_read; |
| d_write_t *d_write; |
| d_ioctl_t *d_ioctl; |
| d_poll_t *d_poll; |
| union { |
| d_mmap_t *old; |
| d_mmap2_t *new; |
| } __d_mmap; |
| d_strategy_t *d_strategy; |
| dumper_t *d_dump; |
| d_kqfilter_t *d_kqfilter; |
| d_purge_t *d_purge; |
| d_mmap_single_t *d_mmap_single; |
| uid_t d_uid; |
| gid_t d_gid; |
| mode_t d_mode; |
| const char *d_kind; |
| |
| /* These fields should not be messed with by drivers */ |
| LIST_ENTRY(cdevsw) d_list; |
| LIST_HEAD(, cdev) d_devs; |
| int d_spare3; |
| union { |
| struct cdevsw *gianttrick; |
| SLIST_ENTRY(cdevsw) postfree_list; |
| } __d_giant; |
| }; |
| #define d_mmap __d_mmap.old |
| #define d_mmap2 __d_mmap.new |
| #define d_gianttrick __d_giant.gianttrick |
| #define d_postfree_list __d_giant.postfree_list |
| |
| struct module; |
| |
| struct devsw_module_data { |
| int (*chainevh)(struct module *, int, void *); /* next handler */ |
| void *chainarg; /* arg for next event handler */ |
| /* Do not initialize fields hereafter */ |
| }; |
| |
| #define DEV_MODULE(name, evh, arg) \ |
| static moduledata_t name##_mod = { \ |
| #name, \ |
| evh, \ |
| arg \ |
| }; \ |
| DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE) |
| |
| |
| void clone_setup(struct clonedevs **cdp); |
| void clone_cleanup(struct clonedevs **); |
| #define CLONE_UNITMASK 0xfffff |
| #define CLONE_FLAG0 (CLONE_UNITMASK + 1) |
| int clone_create(struct clonedevs **, struct cdevsw *, int *unit, struct cdev **dev, int extra); |
| |
| int count_dev(struct cdev *_dev); |
| void destroy_dev(struct cdev *_dev); |
| int destroy_dev_sched(struct cdev *dev); |
| int destroy_dev_sched_cb(struct cdev *dev, void (*cb)(void *), void *arg); |
| void destroy_dev_drain(struct cdevsw *csw); |
| void drain_dev_clone_events(void); |
| struct cdevsw *dev_refthread(struct cdev *_dev); |
| struct cdevsw *devvn_refthread(struct vnode *vp, struct cdev **devp); |
| void dev_relthread(struct cdev *_dev); |
| void dev_depends(struct cdev *_pdev, struct cdev *_cdev); |
| void dev_ref(struct cdev *dev); |
| void dev_refl(struct cdev *dev); |
| void dev_rel(struct cdev *dev); |
| void dev_strategy(struct cdev *dev, struct buf *bp); |
| struct cdev *make_dev(struct cdevsw *_devsw, int _unit, uid_t _uid, gid_t _gid, |
| int _perms, const char *_fmt, ...) __printflike(6, 7); |
| struct cdev *make_dev_cred(struct cdevsw *_devsw, int _unit, |
| struct ucred *_cr, uid_t _uid, gid_t _gid, int _perms, |
| const char *_fmt, ...) __printflike(7, 8); |
| #define MAKEDEV_REF 0x1 |
| #define MAKEDEV_WHTOUT 0x2 |
| struct cdev *make_dev_credf(int _flags, |
| struct cdevsw *_devsw, int _unit, |
| struct ucred *_cr, uid_t _uid, gid_t _gid, int _mode, |
| const char *_fmt, ...) __printflike(8, 9); |
| struct cdev *make_dev_alias(struct cdev *_pdev, const char *_fmt, ...) __printflike(2, 3); |
| void dev_lock(void); |
| void dev_unlock(void); |
| void setconf(void); |
| |
| #define dev2unit(d) ((d)->si_drv0) |
| |
| typedef void (*cdevpriv_dtr_t)(void *data); |
| int devfs_get_cdevpriv(void **datap); |
| int devfs_set_cdevpriv(void *priv, cdevpriv_dtr_t dtr); |
| void devfs_clear_cdevpriv(void); |
| void devfs_fpdrop(struct file *fp); /* XXX This is not public KPI */ |
| |
| #define UID_ROOT 0 |
| #define UID_BIN 3 |
| #define UID_UUCP 66 |
| #define UID_NOBODY 65534 |
| |
| #define GID_WHEEL 0 |
| #define GID_KMEM 2 |
| #define GID_TTY 4 |
| #define GID_OPERATOR 5 |
| #define GID_BIN 7 |
| #define GID_GAMES 13 |
| #define GID_DIALER 68 |
| #define GID_NOBODY 65534 |
| |
| typedef void (*dev_clone_fn)(void *arg, struct ucred *cred, char *name, |
| int namelen, struct cdev **result); |
| |
| int dev_stdclone(char *_name, char **_namep, const char *_stem, int *_unit); |
| EVENTHANDLER_DECLARE(dev_clone, dev_clone_fn); |
| |
| /* Stuff relating to kernel-dump */ |
| |
| struct dumperinfo { |
| dumper_t *dumper; /* Dumping function. */ |
| void *priv; /* Private parts. */ |
| u_int blocksize; /* Size of block in bytes. */ |
| u_int maxiosize; /* Max size allowed for an individual I/O */ |
| off_t mediaoffset; /* Initial offset in bytes. */ |
| off_t mediasize; /* Space available in bytes. */ |
| }; |
| |
| int set_dumper(struct dumperinfo *); |
| int dump_write(struct dumperinfo *, void *, vm_offset_t, off_t, size_t); |
| void dumpsys(struct dumperinfo *); |
| extern int dumping; /* system is dumping */ |
| |
| #endif /* _FREEBSD_KERNEL */ |
| |
| #endif /* !_BSD_SYS_CONF_H_ */ |