Annotation of src/sys/ufs/ufs/ufs_vfsops.c, Revision 1.33.2.1
1.33.2.1! mjf 1: /* $NetBSD: ufs_vfsops.c,v 1.34 2007/06/30 09:37:54 pooka Exp $ */
1.2 cgd 2:
1.1 mycroft 3: /*
4: * Copyright (c) 1991, 1993, 1994
5: * The Regents of the University of California. All rights reserved.
6: * (c) UNIX System Laboratories, Inc.
7: * All or some portions of this file are derived from material licensed
8: * to the University of California by American Telephone and Telegraph
9: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10: * the permission of UNIX System Laboratories, Inc.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
1.18 agc 20: * 3. Neither the name of the University nor the names of its contributors
1.1 mycroft 21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: *
1.6 fvdl 36: * @(#)ufs_vfsops.c 8.8 (Berkeley) 5/20/95
1.1 mycroft 37: */
1.13 lukem 38:
39: #include <sys/cdefs.h>
1.33.2.1! mjf 40: __KERNEL_RCSID(0, "$NetBSD: ufs_vfsops.c,v 1.34 2007/06/30 09:37:54 pooka Exp $");
1.7 scottr 41:
1.21 dbj 42: #if defined(_KERNEL_OPT)
1.24 thorpej 43: #include "opt_ffs.h"
1.7 scottr 44: #include "opt_quota.h"
1.21 dbj 45: #endif
1.1 mycroft 46:
47: #include <sys/param.h>
48: #include <sys/mbuf.h>
49: #include <sys/mount.h>
50: #include <sys/proc.h>
51: #include <sys/buf.h>
52: #include <sys/vnode.h>
53: #include <sys/malloc.h>
1.27 elad 54: #include <sys/kauth.h>
1.1 mycroft 55:
56: #include <miscfs/specfs/specdev.h>
57:
58: #include <ufs/ufs/quota.h>
59: #include <ufs/ufs/inode.h>
60: #include <ufs/ufs/ufsmount.h>
61: #include <ufs/ufs/ufs_extern.h>
1.22 rumble 62: #ifdef UFS_DIRHASH
63: #include <ufs/ufs/dirhash.h>
64: #endif
1.1 mycroft 65:
1.10 jdolecek 66: /* how many times ufs_init() was called */
1.23 thorpej 67: static int ufs_initcount = 0;
1.10 jdolecek 68:
1.33.2.1! mjf 69: struct pool ufs_direct_pool;
1.20 hannken 70:
1.1 mycroft 71: /*
72: * Make a filesystem operational.
73: * Nothing to do at the moment.
74: */
75: /* ARGSUSED */
76: int
1.31 christos 77: ufs_start(struct mount *mp, int flags, struct lwp *l)
1.1 mycroft 78: {
79:
80: return (0);
81: }
82:
83: /*
84: * Return the root of a filesystem.
85: */
86: int
1.23 thorpej 87: ufs_root(struct mount *mp, struct vnode **vpp)
1.1 mycroft 88: {
89: struct vnode *nvp;
90: int error;
91:
1.16 thorpej 92: if ((error = VFS_VGET(mp, (ino_t)ROOTINO, &nvp)) != 0)
1.1 mycroft 93: return (error);
94: *vpp = nvp;
95: return (0);
96: }
97:
98: /*
99: * Do operations associated with quotas
100: */
101: int
1.26 christos 102: ufs_quotactl(struct mount *mp, int cmds, uid_t uid, void *arg, struct lwp *l)
1.1 mycroft 103: {
104:
105: #ifndef QUOTA
1.30 thorpej 106: (void) mp;
107: (void) cmds;
108: (void) uid;
109: (void) arg;
110: (void) l;
1.1 mycroft 111: return (EOPNOTSUPP);
112: #else
1.4 christos 113: int cmd, type, error;
114:
1.1 mycroft 115: if (uid == -1)
1.28 ad 116: uid = kauth_cred_getuid(l->l_cred);
1.1 mycroft 117: cmd = cmds >> SUBCMDSHIFT;
118:
119: switch (cmd) {
1.3 cgd 120: case Q_SYNC:
121: break;
1.1 mycroft 122: case Q_GETQUOTA:
1.28 ad 123: if (uid == kauth_cred_getuid(l->l_cred))
1.1 mycroft 124: break;
125: /* fall through */
126: default:
1.28 ad 127: if ((error = kauth_authorize_generic(l->l_cred, KAUTH_GENERIC_ISSUSER,
1.32 elad 128: NULL)) != 0)
1.1 mycroft 129: return (error);
130: }
131:
1.3 cgd 132: type = cmds & SUBCMDMASK;
1.1 mycroft 133: if ((u_int)type >= MAXQUOTAS)
134: return (EINVAL);
1.6 fvdl 135: if (vfs_busy(mp, LK_NOWAIT, 0))
136: return (0);
1.1 mycroft 137:
138: switch (cmd) {
139:
140: case Q_QUOTAON:
1.26 christos 141: error = quotaon(l, mp, type, arg);
1.6 fvdl 142: break;
1.1 mycroft 143:
144: case Q_QUOTAOFF:
1.26 christos 145: error = quotaoff(l, mp, type);
1.6 fvdl 146: break;
1.1 mycroft 147:
148: case Q_SETQUOTA:
1.6 fvdl 149: error = setquota(mp, uid, type, arg);
150: break;
1.1 mycroft 151:
152: case Q_SETUSE:
1.6 fvdl 153: error = setuse(mp, uid, type, arg);
154: break;
1.1 mycroft 155:
156: case Q_GETQUOTA:
1.8 mrg 157: error = getquota(mp, uid, type, arg);
1.6 fvdl 158: break;
1.1 mycroft 159:
160: case Q_SYNC:
1.17 fvdl 161: error = qsync(mp);
1.6 fvdl 162: break;
1.1 mycroft 163:
164: default:
1.6 fvdl 165: error = EINVAL;
1.1 mycroft 166: }
1.6 fvdl 167: vfs_unbusy(mp);
168: return (error);
1.1 mycroft 169: #endif
170: }
171:
172: /*
1.9 wrstuden 173: * This is the generic part of fhtovp called after the underlying
174: * filesystem has validated the file handle.
175: */
176: int
1.23 thorpej 177: ufs_fhtovp(struct mount *mp, struct ufid *ufhp, struct vnode **vpp)
1.9 wrstuden 178: {
179: struct vnode *nvp;
1.11 augustss 180: struct inode *ip;
1.9 wrstuden 181: int error;
182:
1.16 thorpej 183: if ((error = VFS_VGET(mp, ufhp->ufid_ino, &nvp)) != 0) {
1.1 mycroft 184: *vpp = NULLVP;
185: return (error);
186: }
187: ip = VTOI(nvp);
1.14 fvdl 188: if (ip->i_mode == 0 || ip->i_gen != ufhp->ufid_gen) {
1.1 mycroft 189: vput(nvp);
190: *vpp = NULLVP;
191: return (ESTALE);
192: }
193: *vpp = nvp;
194: return (0);
1.6 fvdl 195: }
196:
197: /*
198: * Initialize UFS filesystems, done only once.
199: */
200: void
1.23 thorpej 201: ufs_init(void)
1.6 fvdl 202: {
1.10 jdolecek 203: if (ufs_initcount++ > 0)
204: return;
1.6 fvdl 205:
1.21 dbj 206: pool_init(&ufs_direct_pool, sizeof(struct direct), 0, 0, 0, "ufsdirpl",
1.33 ad 207: &pool_allocator_nointr, IPL_NONE);
1.20 hannken 208:
1.6 fvdl 209: ufs_ihashinit();
210: #ifdef QUOTA
211: dqinit();
1.12 chs 212: #endif
1.22 rumble 213: #ifdef UFS_DIRHASH
214: ufsdirhash_init();
215: #endif
1.33.2.1! mjf 216: #ifdef UFS_EXTATTR
! 217: ufs_extattr_init();
! 218: #endif
1.12 chs 219: }
220:
221: void
1.23 thorpej 222: ufs_reinit(void)
1.12 chs 223: {
224: ufs_ihashreinit();
225: #ifdef QUOTA
226: dqreinit();
1.10 jdolecek 227: #endif
228: }
229:
230: /*
231: * Free UFS filesystem resources, done only once.
232: */
233: void
1.23 thorpej 234: ufs_done(void)
1.10 jdolecek 235: {
236: if (--ufs_initcount > 0)
237: return;
238:
239: ufs_ihashdone();
240: #ifdef QUOTA
241: dqdone();
1.6 fvdl 242: #endif
1.20 hannken 243: pool_destroy(&ufs_direct_pool);
1.22 rumble 244: #ifdef UFS_DIRHASH
245: ufsdirhash_done();
246: #endif
1.33.2.1! mjf 247: #ifdef UFS_EXTATTR
! 248: ufs_extattr_done();
! 249: #endif
1.1 mycroft 250: }
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