Annotation of src/sys/miscfs/kernfs/kernfs.h, Revision 1.18
1.18 ! itojun 1: /* $NetBSD: kernfs.h,v 1.17 2003/08/07 16:32:37 agc Exp $ */
1.8 cgd 2:
1.1 cgd 3: /*
1.6 mycroft 4: * Copyright (c) 1992, 1993
5: * The Regents of the University of California. All rights reserved.
1.1 cgd 6: *
1.5 cgd 7: * This code is derived from software donated to Berkeley by
1.1 cgd 8: * Jan-Simon Pendry.
9: *
1.2 cgd 10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
1.17 agc 18: * 3. Neither the name of the University nor the names of its contributors
1.2 cgd 19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
1.1 cgd 21: *
1.2 cgd 22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
1.1 cgd 33: *
1.12 fvdl 34: * @(#)kernfs.h 8.6 (Berkeley) 3/29/95
1.1 cgd 35: */
36:
1.6 mycroft 37: #define _PATH_KERNFS "/kern" /* Default mountpoint */
38:
1.9 briggs 39: #ifdef _KERNEL
1.18 ! itojun 40: #include <sys/queue.h>
! 41:
! 42: /*
! 43: * The different types of node in a kernfs filesystem
! 44: */
! 45: typedef enum {
! 46: Pkern, /* the filesystem itself (.) */
! 47: Proot, /* the filesystem root (..) */
! 48: Pnull, /* none aplicable */
! 49: Ptime, /* boottime */
! 50: Pint, /* integer */
! 51: Pstring, /* string */
! 52: Phostname, /* hostname */
! 53: Pavenrun, /* loadavg */
! 54: Pdevice, /* device file (rootdev/rrootdev) */
! 55: Pmsgbuf, /* msgbuf */
! 56: Pipsecsadir, /* ipsec security association (top dir) */
! 57: Pipsecspdir, /* ipsec security policy (top dir) */
! 58: Pipsecsa, /* ipsec security association entry */
! 59: Pipsecsp, /* ipsec security policy entry */
! 60: } kfstype;
1.11 pk 61:
1.18 ! itojun 62: /*
! 63: * control data for the kern file system.
! 64: */
1.11 pk 65: struct kern_target {
1.18 ! itojun 66: u_char kt_type;
! 67: u_char kt_namlen;
! 68: const char *kt_name;
! 69: void *kt_data;
! 70: kfstype kt_tag;
! 71: u_char kt_vtype;
! 72: mode_t kt_mode;
1.1 cgd 73: };
74:
75: struct kernfs_node {
1.18 ! itojun 76: LIST_ENTRY(kernfs_node) kfs_hash; /* hash chain */
! 77: TAILQ_ENTRY(kernfs_node) kfs_list; /* flat list */
! 78: struct vnode *kfs_vnode; /* vnode associated with this pfsnode */
! 79: kfstype kfs_type; /* type of procfs node */
! 80: mode_t kfs_mode; /* mode bits for stat() */
! 81: long kfs_fileno; /* unique file id */
! 82: u_int32_t kfs_value; /* SA id or SP id (Pint) */
! 83: const struct kern_target *kfs_kt;
! 84: void *kfs_v; /* pointer to secasvar/secpolicy/mbuf */
! 85: long kfs_cookie; /* fileno cookie */
! 86: };
! 87:
! 88: struct kernfs_mount {
! 89: TAILQ_HEAD(, kernfs_node) nodelist;
! 90: long fileno_cookie;
1.1 cgd 91: };
92:
1.18 ! itojun 93: #define UIO_MX 32
! 94:
! 95: #define KERNFS_FILENO(kt, typ, cookie) \
! 96: ((kt) ? 2 + ((kt) - &kern_targets[0]) \
! 97: : (((cookie) << 6) | ((typ) + nkern_targets)))
! 98:
1.1 cgd 99: #define VFSTOKERNFS(mp) ((struct kernfs_mount *)((mp)->mnt_data))
1.18 ! itojun 100: #define VTOKERN(vp) ((struct kernfs_node *)(vp)->v_data)
! 101: #define KERNFSTOV(kfs) ((kfs)->kfs_vnode)
1.1 cgd 102:
1.18 ! itojun 103: extern const struct kern_target kern_targets[];
! 104: extern int nkern_targets;
1.10 christos 105: extern int (**kernfs_vnodeop_p) __P((void *));
1.1 cgd 106: extern struct vfsops kernfs_vfsops;
1.6 mycroft 107: extern dev_t rrootdev;
1.18 ! itojun 108:
! 109: struct secasvar;
! 110: struct secpolicy;
! 111:
! 112: int kernfs_root __P((struct mount *, struct vnode **));
! 113:
! 114: void kernfs_hashinit __P((void));
! 115: void kernfs_hashreinit __P((void));
! 116: void kernfs_hashdone __P((void));
! 117: int kernfs_freevp __P((struct vnode *));
! 118: int kernfs_allocvp __P((struct mount *, struct vnode **, kfstype,
! 119: const struct kern_target *, u_int32_t));
! 120:
! 121: void kernfs_revoke_sa __P((struct secasvar *));
! 122: void kernfs_revoke_sp __P((struct secpolicy *));
1.9 briggs 123: #endif /* _KERNEL */
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