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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 1.13 2006/05/05 21:27:58 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,
84 struct proc *p = td->td_proc;
90 type = cmds & SUBCMDMASK;
91 cmd = cmds >> SUBCMDSHIFT;
96 uid = p->p_ucred->cr_ruid;
99 uid = p->p_ucred->cr_rgid;
110 if (uid == p->p_ucred->cr_ruid)
114 if ((error = suser_cred(p->p_ucred, PRISON_ROOT)) != 0)
118 type = cmds & SUBCMDMASK;
119 if ((uint)type >= MAXQUOTAS)
121 if (vfs_busy(mp, LK_NOWAIT))
127 error = ufs_quotaon(td, mp, type, arg);
131 error = ufs_quotaoff(td, mp, type);
135 error = ufs_setquota(mp, uid, type, arg);
139 error = ufs_setuse(mp, uid, type, arg);
143 error = ufs_getquota(mp, uid, type, arg);
147 error = ufs_qsync(mp);
160 * Initial UFS filesystems, done only once.
163 ufs_init(struct vfsconf *vfsp)
178 * This is the generic part of fhtovp called after the underlying
179 * filesystem has validated the file handle.
181 * Call the VFS_CHECKEXP beforehand to verify access.
184 ufs_fhtovp(struct mount *mp, struct ufid *ufhp, struct vnode **vpp)
190 error = VFS_VGET(mp, ufhp->ufid_ino, &nvp);
196 if (ip->i_mode == 0 ||
197 ip->i_gen != ufhp->ufid_gen ||
198 (VFSTOUFS(mp)->um_i_effnlink_valid ? ip->i_effnlink :
210 * This is the generic part of fhtovp called after the underlying
211 * filesystem has validated the file handle.
213 * Verify that a host should have access to a filesystem.
216 ufs_check_export(struct mount *mp, struct sockaddr *nam, int *exflagsp,
217 struct ucred **credanonp)
220 struct ufsmount *ump;;
224 * Get the export permission structure for this <mp, client> tuple.
226 np = vfs_export_lookup(mp, &ump->um_export, nam);
230 *exflagsp = np->netc_exflags;
231 *credanonp = &np->netc_anon;