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38 * @(#)ufs_vfsops.c 8.8 (Berkeley) 5/20/95
39 * $FreeBSD: src/sys/ufs/ufs/ufs_vfsops.c,v 1.17.2.3 2001/10/14 19:08:16 iedowse Exp $
40 * $DragonFly: src/sys/vfs/ufs/ufs_vfsops.c,v 1.14 2006/05/06 16:20:19 dillon Exp $
43 #include "opt_quota.h"
45 #include <sys/param.h>
46 #include <sys/kernel.h>
47 #include <sys/mount.h>
49 #include <sys/malloc.h>
50 #include <sys/vnode.h>
55 #include "ufs_extern.h"
57 MALLOC_DEFINE(M_UFSMNT, "UFS mount", "UFS mount structure");
59 * Return the root of a filesystem.
62 ufs_root(struct mount *mp, struct vnode **vpp)
67 error = VFS_VGET(mp, (ino_t)ROOTINO, &nvp);
75 * Do operations associated with quotas
78 ufs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
87 if (td->td_proc == NULL)
89 cred = td->td_proc->p_ucred;
91 type = cmds & SUBCMDMASK;
92 cmd = cmds >> SUBCMDSHIFT;
111 if (uid == cred->cr_ruid)
115 if ((error = suser_cred(cred, PRISON_ROOT)) != 0)
119 type = cmds & SUBCMDMASK;
120 if ((uint)type >= MAXQUOTAS)
122 if (vfs_busy(mp, LK_NOWAIT))
128 error = ufs_quotaon(cred, mp, type, arg);
132 error = ufs_quotaoff(mp, type);
136 error = ufs_setquota(mp, uid, type, arg);
140 error = ufs_setuse(mp, uid, type, arg);
144 error = ufs_getquota(mp, uid, type, arg);
148 error = ufs_qsync(mp);
161 * Initial UFS filesystems, done only once.
164 ufs_init(struct vfsconf *vfsp)
179 * This is the generic part of fhtovp called after the underlying
180 * filesystem has validated the file handle.
182 * Call the VFS_CHECKEXP beforehand to verify access.
185 ufs_fhtovp(struct mount *mp, struct ufid *ufhp, struct vnode **vpp)
191 error = VFS_VGET(mp, ufhp->ufid_ino, &nvp);
197 if (ip->i_mode == 0 ||
198 ip->i_gen != ufhp->ufid_gen ||
199 (VFSTOUFS(mp)->um_i_effnlink_valid ? ip->i_effnlink :
211 * This is the generic part of fhtovp called after the underlying
212 * filesystem has validated the file handle.
214 * Verify that a host should have access to a filesystem.
217 ufs_check_export(struct mount *mp, struct sockaddr *nam, int *exflagsp,
218 struct ucred **credanonp)
221 struct ufsmount *ump;;
225 * Get the export permission structure for this <mp, client> tuple.
227 np = vfs_export_lookup(mp, &ump->um_export, nam);
231 *exflagsp = np->netc_exflags;
232 *credanonp = &np->netc_anon;