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34 * @(#)ufs_vfsops.c 8.8 (Berkeley) 5/20/95
35 * $FreeBSD: src/sys/ufs/ufs/ufs_vfsops.c,v 1.17.2.3 2001/10/14 19:08:16 iedowse Exp $
36 * $DragonFly: src/sys/vfs/ufs/ufs_vfsops.c,v 1.17 2008/09/17 21:44:25 dillon Exp $
39 #include "opt_quota.h"
41 #include <sys/param.h>
42 #include <sys/kernel.h>
43 #include <sys/mount.h>
46 #include <sys/malloc.h>
47 #include <sys/vnode.h>
52 #include "ufs_extern.h"
54 MALLOC_DEFINE(M_UFSMNT, "UFS mount", "UFS mount structure");
56 * Return the root of a filesystem.
59 ufs_root(struct mount *mp, struct vnode **vpp)
64 error = VFS_VGET(mp, NULL, (ino_t)ROOTINO, &nvp);
72 * Do operations associated with quotas
75 ufs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
83 type = cmds & SUBCMDMASK;
84 cmd = cmds >> SUBCMDSHIFT;
105 error = priv_check_cred(cred, PRIV_UFS_QUOTAON, 0);
109 error = priv_check_cred(cred, PRIV_UFS_QUOTAOFF, 0);
113 error = priv_check_cred(cred, PRIV_VFS_SETQUOTA, 0);
117 error = priv_check_cred(cred, PRIV_UFS_SETUSE, 0);
121 if (uid == cred->cr_ruid)
124 error = priv_check_cred(cred, PRIV_VFS_GETQUOTA, 0);
140 if ((uint)type >= MAXQUOTAS)
142 if (vfs_busy(mp, LK_NOWAIT))
148 error = ufs_quotaon(cred, mp, type, arg);
152 error = ufs_quotaoff(mp, type);
156 error = ufs_setquota(mp, uid, type, arg);
160 error = ufs_setuse(mp, uid, type, arg);
164 error = ufs_getquota(mp, uid, type, arg);
168 error = ufs_qsync(mp);
181 * Initial UFS filesystems, done only once.
184 ufs_init(struct vfsconf *vfsp)
198 * This is the generic part of fhtovp called after the underlying
199 * filesystem has validated the file handle.
201 * Call the VFS_CHECKEXP beforehand to verify access.
204 ufs_fhtovp(struct mount *mp, struct vnode *rootpv,
205 struct ufid *ufhp, struct vnode **vpp)
211 error = VFS_VGET(mp, NULL, ufhp->ufid_ino, &nvp);
217 if (ip->i_mode == 0 ||
218 ip->i_gen != ufhp->ufid_gen ||
219 (VFSTOUFS(mp)->um_i_effnlink_valid ? ip->i_effnlink :
231 * This is the generic part of fhtovp called after the underlying
232 * filesystem has validated the file handle.
234 * Verify that a host should have access to a filesystem.
237 ufs_check_export(struct mount *mp, struct sockaddr *nam, int *exflagsp,
238 struct ucred **credanonp)
241 struct ufsmount *ump;
245 * Get the export permission structure for this <mp, client> tuple.
247 np = vfs_export_lookup(mp, &ump->um_export, nam);
251 *exflagsp = np->netc_exflags;
252 *credanonp = &np->netc_anon;