/*- * 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 _SYS_CONF_H_ #define _SYS_CONF_H_ #ifdef _KERNEL #include #else #include #endif struct snapdata; struct devfs_dirent; struct cdevsw; struct file; struct cdev { void *__si_reserved; u_int si_flags; #define SI_ETERNAL 0x0001 /* never destroyed */ #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; void *si_spare0; 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_name[SPECNAMELEN + 1]; }; #define si_snapdata __si_u.__sid_snapdata #ifdef _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_ooffset_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 /* _KERNEL */ /* * Types for d_flags. */ #define D_TAPE 0x0001 #define D_DISK 0x0002 #define D_TTY 0x0004 #define D_MEM 0x0008 #ifdef _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_NEEDGIANT 0x00400000 /* driver want Giant */ #define D_NEEDMINOR 0x00800000 /* driver uses clone_create() */ /* * 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_03 0x17122009 /* d_mmap takes memattr,vm_ooffset_t */ #define D_VERSION D_VERSION_03 /* * 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; d_mmap_t *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; int32_t d_spare0[3]; void *d_spare1[3]; /* These fields should not be messed with by drivers */ LIST_HEAD(, cdev) d_devs; int d_spare2; union { struct cdevsw *gianttrick; SLIST_ENTRY(cdevsw) postfree_list; } __d_giant; }; #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, int *_ref); struct cdevsw *devvn_refthread(struct vnode *vp, struct cdev **devp, int *_ref); void dev_relthread(struct cdev *_dev, int _ref); 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 0x01 #define MAKEDEV_WHTOUT 0x02 #define MAKEDEV_NOWAIT 0x04 #define MAKEDEV_WAITOK 0x08 #define MAKEDEV_ETERNAL 0x10 #define MAKEDEV_CHECKNAME 0x20 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); int make_dev_p(int _flags, struct cdev **_cdev, struct cdevsw *_devsw, 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); int make_dev_alias_p(int _flags, struct cdev **_cdev, struct cdev *_pdev, const char *_fmt, ...) __printflike(4, 5); int make_dev_physpath_alias(int _flags, struct cdev **_cdev, struct cdev *_pdev, struct cdev *_old_alias, const char *_physpath); void dev_lock(void); void dev_unlock(void); void setconf(void); #ifdef KLD_MODULE #define MAKEDEV_ETERNAL_KLD 0 #else #define MAKEDEV_ETERNAL_KLD MAKEDEV_ETERNAL #endif #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 */ ino_t devfs_alloc_cdp_inode(void); void devfs_free_cdp_inode(ino_t ino); #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 *); int doadump(boolean_t); extern int dumping; /* system is dumping */ #endif /* _KERNEL */ #endif /* !_SYS_CONF_H_ */