/*- * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 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 struct tty; struct disk; struct vnode; struct buf; TAILQ_HEAD(snaphead, inode); struct cdev { u_int si_flags; #define SI_STASHED 0x0001 /* created in stashed storage */ #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 dev_t */ #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 */ struct timespec si_atime; struct timespec si_ctime; struct timespec si_mtime; udev_t si_udev; LIST_ENTRY(cdev) si_hash; SLIST_HEAD(, vnode) si_hlist; LIST_HEAD(, cdev) si_children; LIST_ENTRY(cdev) si_siblings; dev_t si_parent; u_int si_inode; char *si_name; void *si_drv1, *si_drv2; struct cdevsw *si_devsw; int si_iosize_max; /* maximum I/O size (for physio &al) */ u_int si_stripesize; u_int si_stripeoffset; uid_t si_uid; gid_t si_gid; mode_t si_mode; u_long si_usecount; union { struct { struct tty *__sit_tty; } __si_tty; struct { struct mount *__sid_mountpoint; int __sid_bsize_phys; /* min physical block size */ int __sid_bsize_best; /* optimal block size */ struct snaphead __sid_snapshots; daddr_t __sid_snaplistsize; /* size of snapblklist. */ daddr_t *__sid_snapblklist; /* known snapshot blocks. */ int (*__sid_copyonwrite)(struct vnode *, struct buf *); } __si_disk; } __si_u; char __si_namebuf[SPECNAMELEN + 1]; }; #define si_tty __si_u.__si_tty.__sit_tty #define si_mountpoint __si_u.__si_disk.__sid_mountpoint #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys #define si_bsize_best __si_u.__si_disk.__sid_bsize_best #define si_snapshots __si_u.__si_disk.__sid_snapshots #define si_snaplistsize __si_u.__si_disk.__sid_snaplistsize #define si_snapblklist __si_u.__si_disk.__sid_snapblklist #define si_copyonwrite __si_u.__si_disk.__sid_copyonwrite /* * Special device management */ #define SPECHSZ 64 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ) /* * Definitions of device driver entry switches */ struct bio; struct buf; struct thread; struct uio; struct knote; /* * 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(dev_t dev, int oflags, int devtype, struct thread *td); typedef int d_close_t(dev_t dev, int fflag, int devtype, struct thread *td); typedef void d_strategy_t(struct bio *bp); typedef int d_ioctl_t(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td); typedef int d_read_t(dev_t dev, struct uio *uio, int ioflag); typedef int d_write_t(dev_t dev, struct uio *uio, int ioflag); typedef int d_poll_t(dev_t dev, int events, struct thread *td); typedef int d_kqfilter_t(dev_t dev, struct knote *kn); typedef int d_mmap_t(dev_t dev, vm_offset_t offset, vm_paddr_t *paddr, int nprot); typedef int l_open_t(dev_t dev, struct tty *tp); typedef int l_close_t(struct tty *tp, int flag); typedef int l_read_t(struct tty *tp, struct uio *uio, int flag); typedef int l_write_t(struct tty *tp, struct uio *uio, int flag); typedef int l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag, struct thread *td); typedef int l_rint_t(int c, struct tty *tp); typedef int l_start_t(struct tty *tp); typedef int l_modem_t(struct tty *tp, int flag); 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. */ #define BIO_STRATEGY(bp) \ do { \ if ((!(bp)->bio_cmd) || ((bp)->bio_cmd & ((bp)->bio_cmd - 1))) \ Debugger("bio_cmd botch"); \ (*devsw((bp)->bio_dev)->d_strategy)(bp); \ } while (0) #define DEV_STRATEGY(bp) \ do { \ if ((bp)->b_flags & B_PHYS) \ (bp)->b_io.bio_offset = (bp)->b_offset; \ else \ (bp)->b_io.bio_offset = dbtob((bp)->b_blkno); \ (bp)->b_io.bio_done = bufdonebio; \ (bp)->b_io.bio_caller2 = (bp); \ BIO_STRATEGY(&(bp)->b_io); \ } while (0) #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. */ #define D_MEMDISK 0x00010000 /* memory type disk */ #define D_NAGGED 0x00020000 /* nagged about missing make_dev() */ #define D_TRACKCLOSE 0x00080000 /* track all closes */ #define D_MMAP_ANON 0x00100000 /* special treatment in vm_mmap.c */ #define D_NOGIANT 0x00400000 /* Doesn't want Giant */ /* * Character device switch table */ struct cdevsw { int d_maj; u_int d_flags; const char *d_name; d_open_t *d_open; 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; }; /* * Line discipline switch table */ struct linesw { l_open_t *l_open; l_close_t *l_close; l_read_t *l_read; l_write_t *l_write; l_ioctl_t *l_ioctl; l_rint_t *l_rint; l_start_t *l_start; l_modem_t *l_modem; u_char l_hotchar; }; extern struct linesw linesw[]; extern int nlinesw; int ldisc_register(int , struct linesw *); void ldisc_deregister(int); #define LDISC_LOAD -1 /* Loadable line discipline */ #endif /* _KERNEL */ #ifdef _KERNEL d_open_t noopen; d_close_t noclose; d_read_t noread; d_write_t nowrite; d_ioctl_t noioctl; d_mmap_t nommap; d_kqfilter_t nokqfilter; #define nostrategy ((d_strategy_t *)NULL) #define nopoll seltrue dumper_t nodump; #define NUMCDEVSW 256 #define MAJOR_AUTO 0 /* XXX: Not GM */ /* * nopsize is little used, so not worth having dummy functions for. */ #define nopsize (NULL) d_open_t nullopen; d_close_t nullclose; l_ioctl_t l_nullioctl; l_read_t l_noread; l_write_t l_nowrite; 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) int count_dev(dev_t _dev); void destroy_dev(dev_t _dev); void revoke_and_destroy_dev(dev_t _dev); struct cdevsw *devsw(dev_t _dev); const char *devtoname(dev_t _dev); int dev_named(dev_t _pdev, const char *_name); void dev_depends(dev_t _pdev, dev_t _cdev); void freedev(dev_t _dev); dev_t makebdev(int _maj, int _min); dev_t make_dev(struct cdevsw *_devsw, int _minor, uid_t _uid, gid_t _gid, int _perms, const char *_fmt, ...) __printflike(6, 7); dev_t make_dev_alias(dev_t _pdev, const char *_fmt, ...) __printflike(2, 3); int dev2unit(dev_t _dev); int unit2minor(int _unit); void setconf(void); dev_t getdiskbyname(char *_name); void devfs_create(dev_t dev); void devfs_destroy(dev_t dev); #define UID_ROOT 0 #define UID_BIN 3 #define UID_UUCP 66 #define GID_WHEEL 0 #define GID_KMEM 2 #define GID_OPERATOR 5 #define GID_BIN 7 #define GID_GAMES 13 #define GID_DIALER 68 typedef void (*dev_clone_fn)(void *arg, char *name, int namelen, dev_t *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. */ off_t mediaoffset; /* Initial offset in bytes. */ off_t mediasize; /* Space available in bytes. */ }; int set_dumper(struct dumperinfo *); void dumpsys(struct dumperinfo *); extern int dumping; /* system is dumping */ #endif /* _KERNEL */ #endif /* !_SYS_CONF_H_ */