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https://github.com/freebsd/freebsd-src.git
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a481b90b82
Implement subdirs. Build the full "devicename" for cloning functions. Fix panic when deleted device goes away. Collaps devfs_dir and devfs_dirent structures. Add proper cloning to the /dev/fd* "device-"driver. Fix a bug in make_dev_alias() handling which made aliases appear multiple times. Use devfs_clone to implement getdiskbyname() Make specfs maintain the stat(2) timestamps per dev_t
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2000
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* Poul-Henning Kamp. All rights reserved.
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*
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* This code is derived from software donated to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kernfs.h 8.6 (Berkeley) 3/29/95
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* From: FreeBSD: src/sys/miscfs/kernfs/kernfs.h 1.14
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*
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* $FreeBSD$
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*/
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#ifdef _KERNEL
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#ifdef DEVFS_INTERN
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#define NDEVINO 1024
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MALLOC_DECLARE(M_DEVFS);
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struct devfs_dirent {
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int de_inode;
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int de_flags;
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#define DE_ORPHAN 0x1
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#define DE_DOT 0x2
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#define DE_DOTDOT 0x4
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struct dirent *de_dirent;
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TAILQ_ENTRY(devfs_dirent) de_list;
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TAILQ_HEAD(, devfs_dirent) de_dlist;
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struct devfs_dirent *de_dir;
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int de_links;
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mode_t de_mode;
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uid_t de_uid;
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gid_t de_gid;
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struct timespec de_atime;
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struct timespec de_mtime;
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struct timespec de_ctime;
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struct vnode *de_vnode;
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char * de_symlink;
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};
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struct devfs_node {
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struct kern_target *kf_kt;
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};
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struct devfs_mount {
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struct vnode *dm_root; /* Root node */
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struct devfs_dirent *dm_rootdir;
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struct devfs_dirent *dm_basedir;
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unsigned dm_generation;
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struct devfs_dirent *dm_dirent[NDEVINO];
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#define DE_DELETED ((struct devfs_dirent *)&devfs_inot[0])
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int dm_inode;
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};
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extern dev_t devfs_inot[NDEVINO];
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extern int devfs_nino;
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extern unsigned devfs_generation;
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#define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data))
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extern vop_t **devfs_vnodeop_p;
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extern vop_t **devfs_specop_p;
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int devfs_populate __P((struct devfs_mount *dm));
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struct devfs_dirent * devfs_newdirent __P((char *name, int namelen));
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void devfs_purge __P((struct devfs_dirent *dd));
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struct devfs_dirent * devfs_vmkdir __P((char *name, int namelen,
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struct devfs_dirent *dotdot));
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#endif /* DEVFS_INTERN */
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typedef void (*devfs_clone_fn) __P((void *arg, char *name, int namelen, dev_t *result));
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int devfs_stdclone __P((char *name, char **namep, char *stem, int *unit));
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EVENTHANDLER_DECLARE(devfs_clone, devfs_clone_fn);
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#endif /* _KERNEL */
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