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20 * This product includes software developed by the University of
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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 1.16.8.1 2008/09/25 02:20:57 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
,
86 type
= cmds
& SUBCMDMASK
;
87 cmd
= cmds
>> SUBCMDSHIFT
;
106 if (uid
== cred
->cr_ruid
)
110 if ((error
= suser_cred(cred
, PRISON_ROOT
)) != 0)
114 type
= cmds
& SUBCMDMASK
;
115 if ((uint
)type
>= MAXQUOTAS
)
117 if (vfs_busy(mp
, LK_NOWAIT
))
123 error
= ufs_quotaon(cred
, mp
, type
, arg
);
127 error
= ufs_quotaoff(mp
, type
);
131 error
= ufs_setquota(mp
, uid
, type
, arg
);
135 error
= ufs_setuse(mp
, uid
, type
, arg
);
139 error
= ufs_getquota(mp
, uid
, type
, arg
);
143 error
= ufs_qsync(mp
);
156 * Initial UFS filesystems, done only once.
159 ufs_init(struct vfsconf
*vfsp
)
174 * This is the generic part of fhtovp called after the underlying
175 * filesystem has validated the file handle.
177 * Call the VFS_CHECKEXP beforehand to verify access.
180 ufs_fhtovp(struct mount
*mp
, struct vnode
*rootpv
,
181 struct ufid
*ufhp
, struct vnode
**vpp
)
187 error
= VFS_VGET(mp
, ufhp
->ufid_ino
, &nvp
);
193 if (ip
->i_mode
== 0 ||
194 ip
->i_gen
!= ufhp
->ufid_gen
||
195 (VFSTOUFS(mp
)->um_i_effnlink_valid
? ip
->i_effnlink
:
207 * This is the generic part of fhtovp called after the underlying
208 * filesystem has validated the file handle.
210 * Verify that a host should have access to a filesystem.
213 ufs_check_export(struct mount
*mp
, struct sockaddr
*nam
, int *exflagsp
,
214 struct ucred
**credanonp
)
217 struct ufsmount
*ump
;
221 * Get the export permission structure for this <mp, client> tuple.
223 np
= vfs_export_lookup(mp
, &ump
->um_export
, nam
);
227 *exflagsp
= np
->netc_exflags
;
228 *credanonp
= &np
->netc_anon
;