Commit | Line | Data |
---|---|---|
da7c5cc6 | 1 | /* |
7188ac27 KM |
2 | * Copyright (c) 1982, 1986, 1989 Regents of the University of California. |
3 | * All rights reserved. | |
da7c5cc6 | 4 | * |
b702c21d | 5 | * %sccs.include.redist.c% |
7188ac27 | 6 | * |
06ca211c | 7 | * @(#)ufs_vnops.c 7.110 (Berkeley) %G% |
da7c5cc6 | 8 | */ |
6459ebe0 | 9 | |
031fd966 KB |
10 | #include <sys/param.h> |
11 | #include <sys/systm.h> | |
12 | #include <sys/namei.h> | |
13 | #include <sys/resourcevar.h> | |
14 | #include <sys/kernel.h> | |
15 | #include <sys/file.h> | |
16 | #include <sys/stat.h> | |
17 | #include <sys/buf.h> | |
18 | #include <sys/proc.h> | |
19 | #include <sys/conf.h> | |
20 | #include <sys/mount.h> | |
21 | #include <sys/vnode.h> | |
031fd966 | 22 | #include <sys/malloc.h> |
86fb5449 | 23 | #include <sys/dirent.h> |
031fd966 | 24 | |
38285224 KM |
25 | #include <vm/vm.h> |
26 | ||
ebe49688 KM |
27 | #include <miscfs/specfs/specdev.h> |
28 | ||
031fd966 KB |
29 | #include <ufs/ufs/lockf.h> |
30 | #include <ufs/ufs/quota.h> | |
31 | #include <ufs/ufs/inode.h> | |
32 | #include <ufs/ufs/dir.h> | |
33 | #include <ufs/ufs/ufsmount.h> | |
34 | #include <ufs/ufs/ufs_extern.h> | |
35 | ||
a6fce6ff CT |
36 | static int ufs_chmod __P((struct vnode *, int, struct ucred *, struct proc *)); |
37 | static int ufs_chown | |
38285224 | 38 | __P((struct vnode *, uid_t, gid_t, struct ucred *, struct proc *)); |
031fd966 | 39 | |
1a3cb193 KM |
40 | union _qcvt { |
41 | quad_t qcvt; | |
42 | long val[2]; | |
43 | }; | |
44 | #define SETHIGH(q, h) { \ | |
45 | union _qcvt tmp; \ | |
46 | tmp.qcvt = (q); \ | |
47 | tmp.val[_QUAD_HIGHWORD] = (h); \ | |
48 | (q) = tmp.qcvt; \ | |
49 | } | |
50 | #define SETLOW(q, l) { \ | |
51 | union _qcvt tmp; \ | |
52 | tmp.qcvt = (q); \ | |
53 | tmp.val[_QUAD_LOWWORD] = (l); \ | |
54 | (q) = tmp.qcvt; \ | |
55 | } | |
1a3cb193 | 56 | |
4f083fd7 | 57 | /* |
7188ac27 | 58 | * Create a regular file |
4f083fd7 | 59 | */ |
031fd966 | 60 | int |
e6e1f8be | 61 | ufs_create(ap) |
69021bc5 KM |
62 | struct vop_create_args /* { |
63 | struct vnode *a_dvp; | |
64 | struct vnode **a_vpp; | |
65 | struct componentname *a_cnp; | |
66 | struct vattr *a_vap; | |
67 | } */ *ap; | |
3e78e260 | 68 | { |
7188ac27 | 69 | int error; |
3e78e260 | 70 | |
031fd966 | 71 | if (error = |
e6e1f8be KM |
72 | ufs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode), |
73 | ap->a_dvp, ap->a_vpp, ap->a_cnp)) | |
7188ac27 | 74 | return (error); |
7188ac27 | 75 | return (0); |
3e78e260 BJ |
76 | } |
77 | ||
4f083fd7 | 78 | /* |
7188ac27 | 79 | * Mknod vnode call |
4f083fd7 | 80 | */ |
7188ac27 | 81 | /* ARGSUSED */ |
031fd966 | 82 | int |
e6e1f8be | 83 | ufs_mknod(ap) |
69021bc5 KM |
84 | struct vop_mknod_args /* { |
85 | struct vnode *a_dvp; | |
86 | struct vnode **a_vpp; | |
87 | struct componentname *a_cnp; | |
88 | struct vattr *a_vap; | |
89 | } */ *ap; | |
3e78e260 | 90 | { |
e6e1f8be KM |
91 | register struct vattr *vap = ap->a_vap; |
92 | register struct vnode **vpp = ap->a_vpp; | |
c59af027 | 93 | register struct inode *ip; |
7188ac27 | 94 | int error; |
3e78e260 | 95 | |
031fd966 | 96 | if (error = |
e6e1f8be KM |
97 | ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode), |
98 | ap->a_dvp, vpp, ap->a_cnp)) | |
7188ac27 | 99 | return (error); |
e6e1f8be | 100 | ip = VTOI(*vpp); |
d1c43d7f | 101 | ip->i_flag |= IACC|IUPD|ICHG; |
e6e1f8be | 102 | if (vap->va_rdev != VNOVAL) { |
7188ac27 KM |
103 | /* |
104 | * Want to be able to use this to make badblock | |
105 | * inodes, so don't truncate the dev number. | |
106 | */ | |
e6e1f8be | 107 | ip->i_rdev = vap->va_rdev; |
7188ac27 | 108 | } |
7188ac27 KM |
109 | /* |
110 | * Remove inode so that it will be reloaded by iget and | |
111 | * checked to see if it is an alias of an existing entry | |
112 | * in the inode cache. | |
113 | */ | |
e6e1f8be KM |
114 | vput(*vpp); |
115 | (*vpp)->v_type = VNON; | |
116 | vgone(*vpp); | |
117 | *vpp = 0; | |
7188ac27 | 118 | return (0); |
3e78e260 BJ |
119 | } |
120 | ||
121 | /* | |
7188ac27 KM |
122 | * Open called. |
123 | * | |
124 | * Nothing to do. | |
3e78e260 | 125 | */ |
7188ac27 | 126 | /* ARGSUSED */ |
031fd966 | 127 | int |
e6e1f8be | 128 | ufs_open(ap) |
69021bc5 KM |
129 | struct vop_open_args /* { |
130 | struct vnode *a_vp; | |
131 | int a_mode; | |
132 | struct ucred *a_cred; | |
133 | struct proc *a_p; | |
134 | } */ *ap; | |
3e78e260 | 135 | { |
3e78e260 | 136 | |
7188ac27 | 137 | return (0); |
3e78e260 BJ |
138 | } |
139 | ||
140 | /* | |
7188ac27 KM |
141 | * Close called |
142 | * | |
143 | * Update the times on the inode. | |
3e78e260 | 144 | */ |
7188ac27 | 145 | /* ARGSUSED */ |
031fd966 | 146 | int |
e6e1f8be | 147 | ufs_close(ap) |
69021bc5 KM |
148 | struct vop_close_args /* { |
149 | struct vnode *a_vp; | |
150 | int a_fflag; | |
151 | struct ucred *a_cred; | |
152 | struct proc *a_p; | |
153 | } */ *ap; | |
3e78e260 | 154 | { |
e6e1f8be KM |
155 | register struct vnode *vp = ap->a_vp; |
156 | register struct inode *ip = VTOI(vp); | |
3e78e260 | 157 | |
e6e1f8be | 158 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
7188ac27 KM |
159 | ITIMES(ip, &time, &time); |
160 | return (0); | |
3e78e260 BJ |
161 | } |
162 | ||
4b61628b KM |
163 | /* |
164 | * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. | |
165 | * The mode is shifted to select the owner/group/other fields. The | |
166 | * super user is granted all permissions. | |
167 | */ | |
031fd966 | 168 | int |
e6e1f8be | 169 | ufs_access(ap) |
69021bc5 KM |
170 | struct vop_access_args /* { |
171 | struct vnode *a_vp; | |
172 | int a_mode; | |
173 | struct ucred *a_cred; | |
174 | struct proc *a_p; | |
175 | } */ *ap; | |
3e78e260 | 176 | { |
e6e1f8be KM |
177 | register struct vnode *vp = ap->a_vp; |
178 | register struct inode *ip = VTOI(vp); | |
179 | register struct ucred *cred = ap->a_cred; | |
180 | mode_t mode = ap->a_mode; | |
4b61628b KM |
181 | register gid_t *gp; |
182 | int i, error; | |
3e78e260 | 183 | |
4b61628b | 184 | #ifdef DIAGNOSTIC |
e6e1f8be KM |
185 | if (!VOP_ISLOCKED(vp)) { |
186 | vprint("ufs_access: not locked", vp); | |
4b61628b KM |
187 | panic("ufs_access: not locked"); |
188 | } | |
189 | #endif | |
190 | #ifdef QUOTA | |
e6e1f8be KM |
191 | if (mode & VWRITE) { |
192 | switch (vp->v_type) { | |
4b61628b KM |
193 | case VREG: case VDIR: case VLNK: |
194 | if (error = getinoquota(ip)) | |
195 | return (error); | |
196 | } | |
197 | } | |
198 | #endif /* QUOTA */ | |
199 | /* | |
200 | * If you're the super-user, you always get access. | |
201 | */ | |
e6e1f8be | 202 | if (cred->cr_uid == 0) |
4b61628b KM |
203 | return (0); |
204 | /* | |
205 | * Access check is based on only one of owner, group, public. | |
206 | * If not owner, then check group. If not a member of the | |
207 | * group, then check public access. | |
208 | */ | |
e6e1f8be KM |
209 | if (cred->cr_uid != ip->i_uid) { |
210 | mode >>= 3; | |
211 | gp = cred->cr_groups; | |
212 | for (i = 0; i < cred->cr_ngroups; i++, gp++) | |
4b61628b KM |
213 | if (ip->i_gid == *gp) |
214 | goto found; | |
e6e1f8be | 215 | mode >>= 3; |
4b61628b KM |
216 | found: |
217 | ; | |
218 | } | |
06ca211c | 219 | return ((ip->i_mode & mode) == mode ? 0 : EACCES); |
3e78e260 BJ |
220 | } |
221 | ||
7188ac27 | 222 | /* ARGSUSED */ |
031fd966 | 223 | int |
e6e1f8be | 224 | ufs_getattr(ap) |
69021bc5 KM |
225 | struct vop_getattr_args /* { |
226 | struct vnode *a_vp; | |
227 | struct vattr *a_vap; | |
228 | struct ucred *a_cred; | |
229 | struct proc *a_p; | |
230 | } */ *ap; | |
3e78e260 | 231 | { |
e6e1f8be KM |
232 | register struct vnode *vp = ap->a_vp; |
233 | register struct inode *ip = VTOI(vp); | |
234 | register struct vattr *vap = ap->a_vap; | |
3e78e260 | 235 | |
7188ac27 | 236 | ITIMES(ip, &time, &time); |
3e78e260 | 237 | /* |
7188ac27 | 238 | * Copy from inode table |
3e78e260 | 239 | */ |
e6e1f8be KM |
240 | vap->va_fsid = ip->i_dev; |
241 | vap->va_fileid = ip->i_number; | |
242 | vap->va_mode = ip->i_mode & ~IFMT; | |
243 | vap->va_nlink = ip->i_nlink; | |
244 | vap->va_uid = ip->i_uid; | |
245 | vap->va_gid = ip->i_gid; | |
246 | vap->va_rdev = (dev_t)ip->i_rdev; | |
d9011ad6 | 247 | vap->va_size = ip->i_din.di_size; |
e6e1f8be KM |
248 | vap->va_atime = ip->i_atime; |
249 | vap->va_mtime = ip->i_mtime; | |
250 | vap->va_ctime = ip->i_ctime; | |
251 | vap->va_flags = ip->i_flags; | |
252 | vap->va_gen = ip->i_gen; | |
7188ac27 | 253 | /* this doesn't belong here */ |
e6e1f8be KM |
254 | if (vp->v_type == VBLK) |
255 | vap->va_blocksize = BLKDEV_IOSIZE; | |
256 | else if (vp->v_type == VCHR) | |
257 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 258 | else |
e6e1f8be KM |
259 | vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; |
260 | vap->va_bytes = dbtob(ip->i_blocks); | |
e6e1f8be KM |
261 | vap->va_type = vp->v_type; |
262 | vap->va_filerev = ip->i_modrev; | |
7188ac27 | 263 | return (0); |
3e78e260 BJ |
264 | } |
265 | ||
266 | /* | |
7188ac27 | 267 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 268 | */ |
031fd966 | 269 | int |
e6e1f8be | 270 | ufs_setattr(ap) |
69021bc5 KM |
271 | struct vop_setattr_args /* { |
272 | struct vnode *a_vp; | |
273 | struct vattr *a_vap; | |
274 | struct ucred *a_cred; | |
275 | struct proc *a_p; | |
276 | } */ *ap; | |
3e78e260 | 277 | { |
e6e1f8be KM |
278 | register struct vattr *vap = ap->a_vap; |
279 | register struct vnode *vp = ap->a_vp; | |
280 | register struct inode *ip = VTOI(vp); | |
281 | register struct ucred *cred = ap->a_cred; | |
282 | register struct proc *p = ap->a_p; | |
7e11a0c9 | 283 | struct timeval atimeval, mtimeval; |
031fd966 | 284 | int error; |
b4d1aee9 | 285 | |
7188ac27 | 286 | /* |
031fd966 | 287 | * Check for unsettable attributes. |
7188ac27 | 288 | */ |
e6e1f8be KM |
289 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || |
290 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
291 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
292 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { | |
7188ac27 | 293 | return (EINVAL); |
b4d1aee9 | 294 | } |
7188ac27 KM |
295 | /* |
296 | * Go through the fields and update iff not VNOVAL. | |
297 | */ | |
e6e1f8be KM |
298 | if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) |
299 | if (error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, p)) | |
7188ac27 | 300 | return (error); |
e6e1f8be KM |
301 | if (vap->va_size != VNOVAL) { |
302 | if (vp->v_type == VDIR) | |
7188ac27 | 303 | return (EISDIR); |
69021bc5 | 304 | if (error = VOP_TRUNCATE(vp, vap->va_size, 0, cred, p)) |
7188ac27 | 305 | return (error); |
3e78e260 | 306 | } |
e6e1f8be | 307 | ip = VTOI(vp); |
7e11a0c9 | 308 | if (vap->va_atime.ts_sec != VNOVAL || vap->va_mtime.ts_sec != VNOVAL) { |
e6e1f8be KM |
309 | if (cred->cr_uid != ip->i_uid && |
310 | (error = suser(cred, &p->p_acflag))) | |
de412887 | 311 | return (error); |
7e11a0c9 | 312 | if (vap->va_atime.ts_sec != VNOVAL) |
7188ac27 | 313 | ip->i_flag |= IACC; |
7e11a0c9 | 314 | if (vap->va_mtime.ts_sec != VNOVAL) |
2ee0b0d9 | 315 | ip->i_flag |= IUPD | ICHG; |
7e11a0c9 KM |
316 | atimeval.tv_sec = vap->va_atime.ts_sec; |
317 | atimeval.tv_usec = vap->va_atime.ts_nsec / 1000; | |
318 | mtimeval.tv_sec = vap->va_mtime.ts_sec; | |
319 | mtimeval.tv_usec = vap->va_mtime.ts_nsec / 1000; | |
320 | if (error = VOP_UPDATE(vp, &atimeval, &mtimeval, 1)) | |
7188ac27 | 321 | return (error); |
5485e062 | 322 | } |
031fd966 | 323 | error = 0; |
e6e1f8be KM |
324 | if (vap->va_mode != (mode_t)VNOVAL) |
325 | error = ufs_chmod(vp, (int)vap->va_mode, cred, p); | |
326 | if (vap->va_flags != VNOVAL) { | |
327 | if (cred->cr_uid != ip->i_uid && | |
328 | (error = suser(cred, &p->p_acflag))) | |
d07fc92a | 329 | return (error); |
e6e1f8be KM |
330 | if (cred->cr_uid == 0) { |
331 | ip->i_flags = vap->va_flags; | |
d07fc92a KM |
332 | } else { |
333 | ip->i_flags &= 0xffff0000; | |
e6e1f8be | 334 | ip->i_flags |= (vap->va_flags & 0xffff); |
d07fc92a KM |
335 | } |
336 | ip->i_flag |= ICHG; | |
337 | } | |
7188ac27 | 338 | return (error); |
528f664c SL |
339 | } |
340 | ||
4f083fd7 SL |
341 | /* |
342 | * Change the mode on a file. | |
343 | * Inode must be locked before calling. | |
344 | */ | |
ca3e8b68 | 345 | static int |
8e232de3 | 346 | ufs_chmod(vp, mode, cred, p) |
7188ac27 | 347 | register struct vnode *vp; |
528f664c | 348 | register int mode; |
8e232de3 | 349 | register struct ucred *cred; |
c6f5111d | 350 | struct proc *p; |
528f664c | 351 | { |
7188ac27 | 352 | register struct inode *ip = VTOI(vp); |
de412887 | 353 | int error; |
197da11b | 354 | |
de412887 | 355 | if (cred->cr_uid != ip->i_uid && |
c6f5111d | 356 | (error = suser(cred, &p->p_acflag))) |
de412887 | 357 | return (error); |
7188ac27 | 358 | if (cred->cr_uid) { |
e57b6138 | 359 | if (vp->v_type != VDIR && (mode & ISVTX)) |
39b5be4c | 360 | return (EFTYPE); |
e57b6138 | 361 | if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) |
39b5be4c | 362 | return (EPERM); |
f94ceb3b | 363 | } |
39b5be4c | 364 | ip->i_mode &= ~07777; |
7188ac27 | 365 | ip->i_mode |= mode & 07777; |
3e78e260 | 366 | ip->i_flag |= ICHG; |
7188ac27 | 367 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
8986c97c | 368 | (void) vnode_pager_uncache(vp); |
47af7174 | 369 | return (0); |
5485e062 BJ |
370 | } |
371 | ||
528f664c SL |
372 | /* |
373 | * Perform chown operation on inode ip; | |
374 | * inode must be locked prior to call. | |
375 | */ | |
ca3e8b68 | 376 | static int |
8e232de3 | 377 | ufs_chown(vp, uid, gid, cred, p) |
7188ac27 | 378 | register struct vnode *vp; |
38285224 KM |
379 | uid_t uid; |
380 | gid_t gid; | |
8e232de3 | 381 | struct ucred *cred; |
c6f5111d | 382 | struct proc *p; |
528f664c | 383 | { |
7188ac27 | 384 | register struct inode *ip = VTOI(vp); |
4b61628b KM |
385 | uid_t ouid; |
386 | gid_t ogid; | |
387 | int error = 0; | |
528f664c | 388 | #ifdef QUOTA |
4b61628b KM |
389 | register int i; |
390 | long change; | |
bb1b75f4 | 391 | #endif |
528f664c | 392 | |
38285224 | 393 | if (uid == (uid_t)VNOVAL) |
bb1b75f4 | 394 | uid = ip->i_uid; |
38285224 | 395 | if (gid == (gid_t)VNOVAL) |
bb1b75f4 | 396 | gid = ip->i_gid; |
18b0bce6 KB |
397 | /* |
398 | * If we don't own the file, are trying to change the owner | |
399 | * of the file, or are not a member of the target group, | |
400 | * the caller must be superuser or the call fails. | |
401 | */ | |
7188ac27 KM |
402 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
403 | !groupmember((gid_t)gid, cred)) && | |
c6f5111d | 404 | (error = suser(cred, &p->p_acflag))) |
7188ac27 | 405 | return (error); |
4b61628b KM |
406 | ouid = ip->i_uid; |
407 | ogid = ip->i_gid; | |
bb1b75f4 | 408 | #ifdef QUOTA |
4b61628b KM |
409 | if (error = getinoquota(ip)) |
410 | return (error); | |
411 | if (ouid == uid) { | |
412 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
413 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
414 | } | |
415 | if (ogid == gid) { | |
416 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
417 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
418 | } | |
419 | change = ip->i_blocks; | |
420 | (void) chkdq(ip, -change, cred, CHOWN); | |
421 | (void) chkiq(ip, -1, cred, CHOWN); | |
422 | for (i = 0; i < MAXQUOTAS; i++) { | |
423 | dqrele(vp, ip->i_dquot[i]); | |
424 | ip->i_dquot[i] = NODQUOT; | |
425 | } | |
f94ceb3b | 426 | #endif |
bb1b75f4 SL |
427 | ip->i_uid = uid; |
428 | ip->i_gid = gid; | |
528f664c | 429 | #ifdef QUOTA |
4b61628b KM |
430 | if ((error = getinoquota(ip)) == 0) { |
431 | if (ouid == uid) { | |
432 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
433 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
434 | } | |
435 | if (ogid == gid) { | |
436 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
437 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
438 | } | |
439 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
440 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
722a9b31 | 441 | goto good; |
4b61628b KM |
442 | else |
443 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
444 | } | |
445 | for (i = 0; i < MAXQUOTAS; i++) { | |
446 | dqrele(vp, ip->i_dquot[i]); | |
447 | ip->i_dquot[i] = NODQUOT; | |
448 | } | |
449 | } | |
450 | ip->i_uid = ouid; | |
451 | ip->i_gid = ogid; | |
452 | if (getinoquota(ip) == 0) { | |
453 | if (ouid == uid) { | |
454 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
455 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
456 | } | |
457 | if (ogid == gid) { | |
458 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
459 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
460 | } | |
722a9b31 KM |
461 | (void) chkdq(ip, change, cred, FORCE|CHOWN); |
462 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
6cb69bbe | 463 | (void) getinoquota(ip); |
4b61628b | 464 | } |
6cb69bbe | 465 | return (error); |
722a9b31 | 466 | good: |
6cb69bbe KM |
467 | if (getinoquota(ip)) |
468 | panic("chown: lost quota"); | |
469 | #endif /* QUOTA */ | |
4b61628b KM |
470 | if (ouid != uid || ogid != gid) |
471 | ip->i_flag |= ICHG; | |
472 | if (ouid != uid && cred->cr_uid != 0) | |
473 | ip->i_mode &= ~ISUID; | |
474 | if (ogid != gid && cred->cr_uid != 0) | |
475 | ip->i_mode &= ~ISGID; | |
476 | return (0); | |
d67a03eb BJ |
477 | } |
478 | ||
7188ac27 | 479 | /* ARGSUSED */ |
031fd966 | 480 | int |
e6e1f8be | 481 | ufs_ioctl(ap) |
69021bc5 KM |
482 | struct vop_ioctl_args /* { |
483 | struct vnode *a_vp; | |
484 | int a_command; | |
485 | caddr_t a_data; | |
486 | int a_fflag; | |
487 | struct ucred *a_cred; | |
488 | struct proc *a_p; | |
489 | } */ *ap; | |
bb1b75f4 | 490 | { |
bb1b75f4 | 491 | |
7188ac27 KM |
492 | return (ENOTTY); |
493 | } | |
494 | ||
495 | /* ARGSUSED */ | |
031fd966 | 496 | int |
e6e1f8be | 497 | ufs_select(ap) |
69021bc5 KM |
498 | struct vop_select_args /* { |
499 | struct vnode *a_vp; | |
500 | int a_which; | |
501 | int a_fflags; | |
502 | struct ucred *a_cred; | |
503 | struct proc *a_p; | |
504 | } */ *ap; | |
7188ac27 KM |
505 | { |
506 | ||
5b169cb7 KM |
507 | /* |
508 | * We should really check to see if I/O is possible. | |
509 | */ | |
510 | return (1); | |
bb1b75f4 | 511 | } |
d67a03eb | 512 | |
4f083fd7 | 513 | /* |
7188ac27 KM |
514 | * Mmap a file |
515 | * | |
516 | * NB Currently unsupported. | |
4f083fd7 | 517 | */ |
7188ac27 | 518 | /* ARGSUSED */ |
031fd966 | 519 | int |
e6e1f8be | 520 | ufs_mmap(ap) |
69021bc5 KM |
521 | struct vop_mmap_args /* { |
522 | struct vnode *a_vp; | |
523 | int a_fflags; | |
524 | struct ucred *a_cred; | |
525 | struct proc *a_p; | |
526 | } */ *ap; | |
d67a03eb | 527 | { |
d67a03eb | 528 | |
7188ac27 | 529 | return (EINVAL); |
d67a03eb | 530 | } |
64d3a787 | 531 | |
4f083fd7 | 532 | /* |
7188ac27 KM |
533 | * Seek on a file |
534 | * | |
535 | * Nothing to do, so just return. | |
4f083fd7 | 536 | */ |
7188ac27 | 537 | /* ARGSUSED */ |
031fd966 | 538 | int |
e6e1f8be | 539 | ufs_seek(ap) |
69021bc5 KM |
540 | struct vop_seek_args /* { |
541 | struct vnode *a_vp; | |
542 | off_t a_oldoff; | |
543 | off_t a_newoff; | |
544 | struct ucred *a_cred; | |
545 | } */ *ap; | |
528f664c | 546 | { |
7188ac27 KM |
547 | |
548 | return (0); | |
549 | } | |
550 | ||
551 | /* | |
552 | * ufs remove | |
553 | * Hard to avoid races here, especially | |
554 | * in unlinking directories. | |
555 | */ | |
031fd966 | 556 | int |
e6e1f8be | 557 | ufs_remove(ap) |
69021bc5 KM |
558 | struct vop_remove_args /* { |
559 | struct vnode *a_dvp; | |
560 | struct vnode *a_vp; | |
561 | struct componentname *a_cnp; | |
562 | } */ *ap; | |
7188ac27 KM |
563 | { |
564 | register struct inode *ip, *dp; | |
565 | int error; | |
566 | ||
e1b76915 JH |
567 | ip = VTOI(ap->a_vp); |
568 | dp = VTOI(ap->a_dvp); | |
569 | error = ufs_dirremove(ap->a_dvp, ap->a_cnp); | |
7188ac27 KM |
570 | if (!error) { |
571 | ip->i_nlink--; | |
572 | ip->i_flag |= ICHG; | |
528f664c | 573 | } |
7188ac27 KM |
574 | if (dp == ip) |
575 | vrele(ITOV(ip)); | |
576 | else | |
031fd966 KB |
577 | ufs_iput(ip); |
578 | ufs_iput(dp); | |
7188ac27 | 579 | return (error); |
4f083fd7 SL |
580 | } |
581 | ||
582 | /* | |
7188ac27 | 583 | * link vnode call |
4f083fd7 | 584 | */ |
031fd966 | 585 | int |
e6e1f8be | 586 | ufs_link(ap) |
69021bc5 KM |
587 | struct vop_link_args /* { |
588 | struct vnode *a_vp; | |
589 | struct vnode *a_tdvp; | |
590 | struct componentname *a_cnp; | |
591 | } */ *ap; | |
4f083fd7 | 592 | { |
e6e1f8be KM |
593 | register struct vnode *vp = ap->a_vp; |
594 | register struct vnode *tdvp = ap->a_tdvp; | |
595 | register struct componentname *cnp = ap->a_cnp; | |
031fd966 | 596 | register struct inode *ip; |
fa4f99ac | 597 | struct timeval tv; |
7188ac27 | 598 | int error; |
4f083fd7 | 599 | |
e6e1f8be KM |
600 | if (vp->v_mount != tdvp->v_mount) { |
601 | VOP_ABORTOP(vp, cnp); | |
602 | if (tdvp == vp) | |
603 | vrele(vp); | |
3330c9fe | 604 | else |
e6e1f8be | 605 | vput(vp); |
3330c9fe JSP |
606 | return (EXDEV); |
607 | } | |
608 | ||
38285224 | 609 | #ifdef DIAGNOSTIC |
e6e1f8be | 610 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
611 | panic("ufs_link: no name"); |
612 | #endif | |
e6e1f8be | 613 | ip = VTOI(tdvp); |
38285224 | 614 | if ((nlink_t)ip->i_nlink >= LINK_MAX) { |
e6e1f8be | 615 | free(cnp->cn_pnbuf, M_NAMEI); |
986aedaa | 616 | return (EMLINK); |
655da945 | 617 | } |
e6e1f8be | 618 | if (vp != tdvp) |
7188ac27 | 619 | ILOCK(ip); |
7188ac27 KM |
620 | ip->i_nlink++; |
621 | ip->i_flag |= ICHG; | |
fa4f99ac CT |
622 | tv = time; |
623 | error = VOP_UPDATE(tdvp, &tv, &tv, 1); | |
7188ac27 | 624 | if (!error) |
e6e1f8be KM |
625 | error = ufs_direnter(ip, vp, cnp); |
626 | if (vp != tdvp) | |
7188ac27 | 627 | IUNLOCK(ip); |
e6e1f8be KM |
628 | FREE(cnp->cn_pnbuf, M_NAMEI); |
629 | vput(vp); | |
7188ac27 KM |
630 | if (error) { |
631 | ip->i_nlink--; | |
82252d2b | 632 | ip->i_flag |= ICHG; |
7188ac27 KM |
633 | } |
634 | return (error); | |
528f664c SL |
635 | } |
636 | ||
cfef4373 JH |
637 | |
638 | ||
639 | /* | |
640 | * relookup - lookup a path name component | |
641 | * Used by lookup to re-aquire things. | |
642 | */ | |
643 | int | |
6e57e9ff | 644 | relookup(dvp, vpp, cnp) |
cfef4373 JH |
645 | struct vnode *dvp, **vpp; |
646 | struct componentname *cnp; | |
647 | { | |
cfef4373 JH |
648 | register struct vnode *dp = 0; /* the directory we are searching */ |
649 | struct vnode *tdp; /* saved dp */ | |
650 | struct mount *mp; /* mount table entry */ | |
651 | int docache; /* == 0 do not cache last component */ | |
652 | int wantparent; /* 1 => wantparent or lockparent flag */ | |
653 | int rdonly; /* lookup read-only flag bit */ | |
d36023e3 KM |
654 | char *cp; /* DEBUG: check name ptr/len */ |
655 | int newhash; /* DEBUG: check name hash */ | |
cfef4373 | 656 | int error = 0; |
cfef4373 JH |
657 | |
658 | /* | |
659 | * Setup: break out flag bits into variables. | |
660 | */ | |
661 | wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); | |
662 | docache = (cnp->cn_flags & NOCACHE) ^ NOCACHE; | |
d7961b1d JH |
663 | if (cnp->cn_nameiop == DELETE || |
664 | (wantparent && cnp->cn_nameiop != CREATE)) | |
cfef4373 JH |
665 | docache = 0; |
666 | rdonly = cnp->cn_flags & RDONLY; | |
667 | cnp->cn_flags &= ~ISSYMLINK; | |
668 | dp = dvp; | |
669 | VOP_LOCK(dp); | |
670 | ||
671 | /* dirloop: */ | |
672 | /* | |
673 | * Search a new directory. | |
674 | * | |
675 | * The cn_hash value is for use by vfs_cache. | |
676 | * The last component of the filename is left accessible via | |
677 | * cnp->cn_nameptr for callers that need the name. Callers needing | |
678 | * the name set the SAVENAME flag. When done, they assume | |
679 | * responsibility for freeing the pathname buffer. | |
680 | */ | |
6e57e9ff | 681 | #ifdef NAMEI_DIAGNOSTIC |
d36023e3 | 682 | for (newhash = 0, cp = cnp->cn_nameptr; *cp != 0 && *cp != '/'; cp++) |
cfef4373 JH |
683 | newhash += (unsigned char)*cp; |
684 | if (newhash != cnp->cn_hash) | |
685 | panic("relookup: bad hash"); | |
686 | if (cnp->cn_namelen != cp - cnp->cn_nameptr) | |
687 | panic ("relookup: bad len"); | |
d36023e3 KM |
688 | if (*cp != 0) |
689 | panic("relookup: not last component"); | |
cfef4373 | 690 | printf("{%s}: ", cnp->cn_nameptr); |
cfef4373 | 691 | #endif |
cfef4373 JH |
692 | |
693 | /* | |
694 | * Check for degenerate name (e.g. / or "") | |
695 | * which is a way of talking about a directory, | |
696 | * e.g. like "/." or ".". | |
697 | */ | |
698 | if (cnp->cn_nameptr[0] == '\0') { | |
699 | if (cnp->cn_nameiop != LOOKUP || wantparent) { | |
700 | error = EISDIR; | |
701 | goto bad; | |
702 | } | |
703 | if (dp->v_type != VDIR) { | |
704 | error = ENOTDIR; | |
705 | goto bad; | |
706 | } | |
707 | if (!(cnp->cn_flags & LOCKLEAF)) | |
708 | VOP_UNLOCK(dp); | |
709 | *vpp = dp; | |
710 | if (cnp->cn_flags & SAVESTART) | |
711 | panic("lookup: SAVESTART"); | |
712 | return (0); | |
713 | } | |
714 | ||
cfef4373 JH |
715 | if (cnp->cn_flags & ISDOTDOT) |
716 | panic ("relookup: lookup on dot-dot"); | |
717 | ||
718 | /* | |
719 | * We now have a segment name to search for, and a directory to search. | |
720 | */ | |
721 | if (error = VOP_LOOKUP(dp, vpp, cnp)) { | |
722 | #ifdef DIAGNOSTIC | |
723 | if (*vpp != NULL) | |
724 | panic("leaf should be empty"); | |
cfef4373 | 725 | #endif |
39a892ba | 726 | if (error != EJUSTRETURN) |
cfef4373 JH |
727 | goto bad; |
728 | /* | |
729 | * If creating and at end of pathname, then can consider | |
730 | * allowing file to be created. | |
731 | */ | |
732 | if (rdonly || (dvp->v_mount->mnt_flag & MNT_RDONLY)) { | |
733 | error = EROFS; | |
734 | goto bad; | |
735 | } | |
d36023e3 KM |
736 | /* ASSERT(dvp == ndp->ni_startdir) */ |
737 | if (cnp->cn_flags & SAVESTART) | |
738 | VREF(dvp); | |
cfef4373 JH |
739 | /* |
740 | * We return with ni_vp NULL to indicate that the entry | |
741 | * doesn't currently exist, leaving a pointer to the | |
742 | * (possibly locked) directory inode in ndp->ni_dvp. | |
743 | */ | |
cfef4373 JH |
744 | return (0); |
745 | } | |
cfef4373 | 746 | dp = *vpp; |
2021967e | 747 | |
6e57e9ff | 748 | #ifdef DIAGNOSTIC |
cfef4373 JH |
749 | /* |
750 | * Check for symbolic link | |
751 | */ | |
2021967e | 752 | if (dp->v_type == VLNK && (cnp->cn_flags & FOLLOW)) |
cfef4373 | 753 | panic ("relookup: symlink found.\n"); |
cfef4373 | 754 | #endif |
cfef4373 | 755 | |
cfef4373 | 756 | nextname: |
cfef4373 JH |
757 | /* |
758 | * Check for read-only file systems. | |
759 | */ | |
760 | if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) { | |
761 | /* | |
762 | * Disallow directory write attempts on read-only | |
763 | * file systems. | |
764 | */ | |
765 | if (rdonly || (dp->v_mount->mnt_flag & MNT_RDONLY) || | |
766 | (wantparent && | |
767 | (dvp->v_mount->mnt_flag & MNT_RDONLY))) { | |
768 | error = EROFS; | |
769 | goto bad2; | |
770 | } | |
771 | } | |
d36023e3 KM |
772 | /* ASSERT(dvp == ndp->ni_startdir) */ |
773 | if (cnp->cn_flags & SAVESTART) | |
cfef4373 | 774 | VREF(dvp); |
cfef4373 JH |
775 | |
776 | if (!wantparent) | |
777 | vrele(dvp); | |
778 | if ((cnp->cn_flags & LOCKLEAF) == 0) | |
779 | VOP_UNLOCK(dp); | |
780 | return (0); | |
781 | ||
782 | bad2: | |
783 | if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) | |
784 | VOP_UNLOCK(dvp); | |
785 | vrele(dvp); | |
786 | bad: | |
787 | vput(dp); | |
788 | *vpp = NULL; | |
789 | return (error); | |
790 | } | |
791 | ||
792 | ||
4f083fd7 SL |
793 | /* |
794 | * Rename system call. | |
795 | * rename("foo", "bar"); | |
796 | * is essentially | |
797 | * unlink("bar"); | |
798 | * link("foo", "bar"); | |
799 | * unlink("foo"); | |
800 | * but ``atomically''. Can't do full commit without saving state in the | |
801 | * inode on disk which isn't feasible at this time. Best we can do is | |
802 | * always guarantee the target exists. | |
803 | * | |
804 | * Basic algorithm is: | |
805 | * | |
806 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 807 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
808 | * from underneath us while we work (it may be truncated by |
809 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
810 | * 2) Link source to destination. If destination already exists, |
811 | * delete it first. | |
68f21562 KM |
812 | * 3) Unlink source reference to inode if still around. If a |
813 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
814 | * is different from the source, patch the ".." entry in the |
815 | * directory. | |
4f083fd7 | 816 | */ |
031fd966 | 817 | int |
e6e1f8be | 818 | ufs_rename(ap) |
69021bc5 KM |
819 | struct vop_rename_args /* { |
820 | struct vnode *a_fdvp; | |
821 | struct vnode *a_fvp; | |
822 | struct componentname *a_fcnp; | |
823 | struct vnode *a_tdvp; | |
824 | struct vnode *a_tvp; | |
825 | struct componentname *a_tcnp; | |
826 | } */ *ap; | |
528f664c | 827 | { |
e6e1f8be KM |
828 | struct vnode *tvp = ap->a_tvp; |
829 | register struct vnode *tdvp = ap->a_tdvp; | |
830 | struct vnode *fvp = ap->a_fvp; | |
831 | register struct vnode *fdvp = ap->a_fdvp; | |
832 | register struct componentname *tcnp = ap->a_tcnp; | |
833 | register struct componentname *fcnp = ap->a_fcnp; | |
4f083fd7 | 834 | register struct inode *ip, *xp, *dp; |
68f21562 | 835 | struct dirtemplate dirbuf; |
fa4f99ac | 836 | struct timeval tv; |
68f21562 | 837 | int doingdirectory = 0, oldparent = 0, newparent = 0; |
a5390dce | 838 | int error = 0; |
cfef4373 | 839 | int fdvpneedsrele = 1, tdvpneedsrele = 1; |
86fb5449 | 840 | u_char namlen; |
4f083fd7 | 841 | |
3330c9fe | 842 | /* Check for cross-device rename */ |
e6e1f8be KM |
843 | if ((fvp->v_mount != tdvp->v_mount) || |
844 | (tvp && (fvp->v_mount != tvp->v_mount))) { | |
845 | VOP_ABORTOP(tdvp, tcnp); /* XXX, why not in NFS? */ | |
846 | if (tdvp == tvp) | |
847 | vrele(tdvp); | |
3330c9fe | 848 | else |
e6e1f8be KM |
849 | vput(tdvp); |
850 | if (tvp) | |
851 | vput(tvp); | |
852 | VOP_ABORTOP(fdvp, fcnp); /* XXX, why not in NFS? */ | |
853 | vrele(fdvp); | |
854 | vrele(fvp); | |
3330c9fe JSP |
855 | return (EXDEV); |
856 | } | |
857 | ||
38285224 | 858 | #ifdef DIAGNOSTIC |
e6e1f8be KM |
859 | if ((tcnp->cn_flags & HASBUF) == 0 || |
860 | (fcnp->cn_flags & HASBUF) == 0) | |
655da945 KM |
861 | panic("ufs_rename: no name"); |
862 | #endif | |
e6e1f8be KM |
863 | dp = VTOI(fdvp); |
864 | ip = VTOI(fvp); | |
655da945 KM |
865 | /* |
866 | * Check if just deleting a link name. | |
867 | */ | |
e6e1f8be KM |
868 | if (fvp == tvp) { |
869 | VOP_ABORTOP(tdvp, tcnp); | |
870 | vput(tdvp); | |
871 | vput(tvp); | |
872 | vrele(fdvp); | |
655da945 | 873 | if ((ip->i_mode&IFMT) == IFDIR) { |
e6e1f8be KM |
874 | VOP_ABORTOP(fdvp, fcnp); |
875 | vrele(fvp); | |
655da945 KM |
876 | return (EINVAL); |
877 | } | |
878 | doingdirectory = 0; | |
879 | goto unlinkit; | |
880 | } | |
7188ac27 | 881 | ILOCK(ip); |
4f083fd7 | 882 | if ((ip->i_mode&IFMT) == IFDIR) { |
4f083fd7 | 883 | /* |
046f18d1 | 884 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 885 | */ |
e6e1f8be KM |
886 | if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || |
887 | dp == ip || (fcnp->cn_flags&ISDOTDOT) || | |
888 | (ip->i_flag & IRENAME)) { | |
889 | VOP_ABORTOP(tdvp, tcnp); | |
890 | vput(tdvp); | |
891 | if (tvp) | |
892 | vput(tvp); | |
893 | VOP_ABORTOP(fdvp, fcnp); | |
894 | vrele(fdvp); | |
895 | vput(fvp); | |
7188ac27 | 896 | return (EINVAL); |
4f083fd7 | 897 | } |
68f21562 | 898 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
899 | oldparent = dp->i_number; |
900 | doingdirectory++; | |
901 | } | |
e6e1f8be | 902 | vrele(fdvp); |
4f083fd7 SL |
903 | |
904 | /* | |
905 | * 1) Bump link count while we're moving stuff | |
906 | * around. If we crash somewhere before | |
907 | * completing our work, the link count | |
908 | * may be wrong, but correctable. | |
909 | */ | |
910 | ip->i_nlink++; | |
911 | ip->i_flag |= ICHG; | |
fa4f99ac CT |
912 | tv = time; |
913 | error = VOP_UPDATE(fvp, &tv, &tv, 1); | |
a388503d | 914 | IUNLOCK(ip); |
4f083fd7 SL |
915 | |
916 | /* | |
917 | * When the target exists, both the directory | |
7188ac27 | 918 | * and target vnodes are returned locked. |
4f083fd7 | 919 | */ |
e6e1f8be | 920 | dp = VTOI(tdvp); |
7188ac27 | 921 | xp = NULL; |
e6e1f8be KM |
922 | if (tvp) |
923 | xp = VTOI(tvp); | |
046f18d1 SL |
924 | /* |
925 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
926 | * parent) then the source directory must not be in the |
927 | * directory heirarchy above the target, as this would | |
928 | * orphan everything below the source directory. Also | |
929 | * the user must have write permission in the source so | |
930 | * as to be able to change "..". We must repeat the call | |
931 | * to namei, as the parent directory is unlocked by the | |
932 | * call to checkpath(). | |
046f18d1 | 933 | */ |
68f21562 KM |
934 | if (oldparent != dp->i_number) |
935 | newparent = dp->i_number; | |
936 | if (doingdirectory && newparent) { | |
e6e1f8be KM |
937 | VOP_LOCK(fvp); |
938 | error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc); | |
939 | VOP_UNLOCK(fvp); | |
48c3b6e8 | 940 | if (error) |
81552f0f | 941 | goto bad; |
655da945 | 942 | if (xp != NULL) |
031fd966 | 943 | ufs_iput(xp); |
e6e1f8be | 944 | if (error = ufs_checkpath(ip, dp, tcnp->cn_cred)) |
655da945 | 945 | goto out; |
e6e1f8be | 946 | if ((tcnp->cn_flags & SAVESTART) == 0) |
655da945 | 947 | panic("ufs_rename: lost to startdir"); |
5e03b55d | 948 | p->p_spare[1]--; |
e6e1f8be | 949 | if (error = relookup(tdvp, &tvp, tcnp)) |
655da945 | 950 | goto out; |
e6e1f8be | 951 | dp = VTOI(tdvp); |
655da945 | 952 | xp = NULL; |
e6e1f8be KM |
953 | if (tvp) |
954 | xp = VTOI(tvp); | |
81552f0f | 955 | } |
4f083fd7 SL |
956 | /* |
957 | * 2) If target doesn't exist, link the target | |
958 | * to the source and unlink the source. | |
959 | * Otherwise, rewrite the target directory | |
960 | * entry to reference the source inode and | |
961 | * expunge the original entry's existence. | |
962 | */ | |
4f083fd7 | 963 | if (xp == NULL) { |
7188ac27 KM |
964 | if (dp->i_dev != ip->i_dev) |
965 | panic("rename: EXDEV"); | |
4f083fd7 | 966 | /* |
68f21562 KM |
967 | * Account for ".." in new directory. |
968 | * When source and destination have the same | |
969 | * parent we don't fool with the link count. | |
4f083fd7 | 970 | */ |
68f21562 | 971 | if (doingdirectory && newparent) { |
38285224 | 972 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
986aedaa KM |
973 | error = EMLINK; |
974 | goto bad; | |
975 | } | |
4f083fd7 SL |
976 | dp->i_nlink++; |
977 | dp->i_flag |= ICHG; | |
fa4f99ac | 978 | if (error = VOP_UPDATE(ITOV(dp), &tv, &tv, 1)) |
986aedaa | 979 | goto bad; |
4f083fd7 | 980 | } |
e6e1f8be | 981 | if (error = ufs_direnter(ip, tdvp, tcnp)) { |
394d67a8 KM |
982 | if (doingdirectory && newparent) { |
983 | dp->i_nlink--; | |
984 | dp->i_flag |= ICHG; | |
fa4f99ac | 985 | (void)VOP_UPDATE(ITOV(dp), &tv, &tv, 1); |
394d67a8 KM |
986 | } |
987 | goto bad; | |
988 | } | |
031fd966 | 989 | ufs_iput(dp); |
4f083fd7 | 990 | } else { |
7188ac27 KM |
991 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
992 | panic("rename: EXDEV"); | |
e69c3c9c SL |
993 | /* |
994 | * Short circuit rename(foo, foo). | |
995 | */ | |
996 | if (xp->i_number == ip->i_number) | |
7188ac27 | 997 | panic("rename: same file"); |
80cee150 JB |
998 | /* |
999 | * If the parent directory is "sticky", then the user must | |
1000 | * own the parent directory, or the destination of the rename, | |
1001 | * otherwise the destination may not be changed (except by | |
1002 | * root). This implements append-only directories. | |
1003 | */ | |
e6e1f8be KM |
1004 | if ((dp->i_mode & ISVTX) && tcnp->cn_cred->cr_uid != 0 && |
1005 | tcnp->cn_cred->cr_uid != dp->i_uid && | |
1006 | xp->i_uid != tcnp->cn_cred->cr_uid) { | |
80cee150 JB |
1007 | error = EPERM; |
1008 | goto bad; | |
1009 | } | |
4f083fd7 | 1010 | /* |
655da945 KM |
1011 | * Target must be empty if a directory and have no links |
1012 | * to it. Also, ensure source and target are compatible | |
1013 | * (both directories, or both not directories). | |
4f083fd7 SL |
1014 | */ |
1015 | if ((xp->i_mode&IFMT) == IFDIR) { | |
e6e1f8be | 1016 | if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) || |
7188ac27 | 1017 | xp->i_nlink > 2) { |
a5390dce | 1018 | error = ENOTEMPTY; |
4f083fd7 SL |
1019 | goto bad; |
1020 | } | |
1021 | if (!doingdirectory) { | |
a5390dce | 1022 | error = ENOTDIR; |
4f083fd7 SL |
1023 | goto bad; |
1024 | } | |
7188ac27 | 1025 | cache_purge(ITOV(dp)); |
4f083fd7 | 1026 | } else if (doingdirectory) { |
a5390dce | 1027 | error = EISDIR; |
4f083fd7 SL |
1028 | goto bad; |
1029 | } | |
e6e1f8be | 1030 | if (error = ufs_dirrewrite(dp, ip, tcnp)) |
7188ac27 | 1031 | goto bad; |
a62786b9 KM |
1032 | /* |
1033 | * If the target directory is in the same | |
1034 | * directory as the source directory, | |
1035 | * decrement the link count on the parent | |
1036 | * of the target directory. | |
1037 | */ | |
1038 | if (doingdirectory && !newparent) { | |
1039 | dp->i_nlink--; | |
1040 | dp->i_flag |= ICHG; | |
1041 | } | |
c59af027 | 1042 | ufs_iput(dp); |
4f083fd7 | 1043 | /* |
a5390dce SL |
1044 | * Adjust the link count of the target to |
1045 | * reflect the dirrewrite above. If this is | |
1046 | * a directory it is empty and there are | |
1047 | * no links to it, so we can squash the inode and | |
1048 | * any space associated with it. We disallowed | |
1049 | * renaming over top of a directory with links to | |
68f21562 KM |
1050 | * it above, as the remaining link would point to |
1051 | * a directory without "." or ".." entries. | |
4f083fd7 | 1052 | */ |
a5390dce | 1053 | xp->i_nlink--; |
4f083fd7 | 1054 | if (doingdirectory) { |
a5390dce SL |
1055 | if (--xp->i_nlink != 0) |
1056 | panic("rename: linked directory"); | |
422c9c21 | 1057 | error = VOP_TRUNCATE(ITOV(xp), (off_t)0, IO_SYNC, |
69021bc5 | 1058 | tcnp->cn_cred, tcnp->cn_proc); |
a5390dce | 1059 | } |
4f083fd7 | 1060 | xp->i_flag |= ICHG; |
031fd966 | 1061 | ufs_iput(xp); |
31db12cb | 1062 | xp = NULL; |
4f083fd7 SL |
1063 | } |
1064 | ||
1065 | /* | |
1066 | * 3) Unlink the source. | |
1067 | */ | |
655da945 | 1068 | unlinkit: |
e6e1f8be KM |
1069 | fcnp->cn_flags &= ~MODMASK; |
1070 | fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; | |
1071 | if ((fcnp->cn_flags & SAVESTART) == 0) | |
655da945 | 1072 | panic("ufs_rename: lost from startdir"); |
5e03b55d | 1073 | p->p_spare[1]--; |
e6e1f8be KM |
1074 | (void) relookup(fdvp, &fvp, fcnp); |
1075 | if (fvp != NULL) { | |
1076 | xp = VTOI(fvp); | |
1077 | dp = VTOI(fdvp); | |
7188ac27 | 1078 | } else { |
d9d75b8f KM |
1079 | /* |
1080 | * From name has disappeared. | |
1081 | */ | |
1082 | if (doingdirectory) | |
1083 | panic("rename: lost dir entry"); | |
1084 | vrele(ITOV(ip)); | |
1085 | return (0); | |
7188ac27 | 1086 | } |
4f083fd7 | 1087 | /* |
7188ac27 | 1088 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
1089 | * changed while the new name has been entered. If the source is |
1090 | * a file then the entry may have been unlinked or renamed. In | |
1091 | * either case there is no further work to be done. If the source | |
1092 | * is a directory then it cannot have been rmdir'ed; its link | |
1093 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 1094 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 1095 | * rename. |
4f083fd7 | 1096 | */ |
4f1a9037 | 1097 | if (xp != ip) { |
68f21562 | 1098 | if (doingdirectory) |
4f1a9037 | 1099 | panic("rename: lost dir entry"); |
68f21562 | 1100 | } else { |
4f083fd7 | 1101 | /* |
68f21562 KM |
1102 | * If the source is a directory with a |
1103 | * new parent, the link count of the old | |
1104 | * parent directory must be decremented | |
1105 | * and ".." set to point to the new parent. | |
4f083fd7 | 1106 | */ |
68f21562 | 1107 | if (doingdirectory && newparent) { |
4f083fd7 SL |
1108 | dp->i_nlink--; |
1109 | dp->i_flag |= ICHG; | |
86cdabf6 | 1110 | error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf, |
7188ac27 | 1111 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 | 1112 | UIO_SYSSPACE, IO_NODELOCKED, |
e6e1f8be | 1113 | tcnp->cn_cred, (int *)0, (struct proc *)0); |
68f21562 | 1114 | if (error == 0) { |
86fb5449 KM |
1115 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1116 | if (fvp->v_mount->mnt_maxsymlinklen <= 0) | |
1117 | namlen = dirbuf.dotdot_type; | |
1118 | else | |
1119 | namlen = dirbuf.dotdot_namlen; | |
1120 | # else | |
1121 | namlen = dirbuf.dotdot_namlen; | |
1122 | # endif | |
1123 | if (namlen != 2 || | |
68f21562 KM |
1124 | dirbuf.dotdot_name[0] != '.' || |
1125 | dirbuf.dotdot_name[1] != '.') { | |
362d7f3b | 1126 | ufs_dirbad(xp, (doff_t)12, |
031fd966 | 1127 | "rename: mangled dir"); |
68f21562 KM |
1128 | } else { |
1129 | dirbuf.dotdot_ino = newparent; | |
86cdabf6 | 1130 | (void) vn_rdwr(UIO_WRITE, ITOV(xp), |
68f21562 KM |
1131 | (caddr_t)&dirbuf, |
1132 | sizeof (struct dirtemplate), | |
93e273b9 | 1133 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1134 | IO_NODELOCKED|IO_SYNC, |
e6e1f8be | 1135 | tcnp->cn_cred, (int *)0, |
5b169cb7 | 1136 | (struct proc *)0); |
7188ac27 | 1137 | cache_purge(ITOV(dp)); |
68f21562 KM |
1138 | } |
1139 | } | |
4f083fd7 | 1140 | } |
e6e1f8be | 1141 | error = ufs_dirremove(fdvp, fcnp); |
7188ac27 | 1142 | if (!error) { |
68f21562 KM |
1143 | xp->i_nlink--; |
1144 | xp->i_flag |= ICHG; | |
4f083fd7 | 1145 | } |
68f21562 | 1146 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1147 | } |
4f083fd7 | 1148 | if (dp) |
7188ac27 | 1149 | vput(ITOV(dp)); |
68f21562 | 1150 | if (xp) |
7188ac27 KM |
1151 | vput(ITOV(xp)); |
1152 | vrele(ITOV(ip)); | |
1153 | return (error); | |
a5390dce | 1154 | |
4f083fd7 | 1155 | bad: |
4f083fd7 | 1156 | if (xp) |
7188ac27 KM |
1157 | vput(ITOV(xp)); |
1158 | vput(ITOV(dp)); | |
4f083fd7 SL |
1159 | out: |
1160 | ip->i_nlink--; | |
1161 | ip->i_flag |= ICHG; | |
7188ac27 KM |
1162 | vrele(ITOV(ip)); |
1163 | return (error); | |
64d3a787 | 1164 | } |
88a7a62a SL |
1165 | |
1166 | /* | |
1167 | * A virgin directory (no blushing please). | |
1168 | */ | |
031fd966 | 1169 | static struct dirtemplate mastertemplate = { |
86fb5449 KM |
1170 | 0, 12, DT_DIR, 1, ".", |
1171 | 0, DIRBLKSIZ - 12, DT_DIR, 2, ".." | |
1172 | }; | |
1173 | static struct odirtemplate omastertemplate = { | |
88a7a62a SL |
1174 | 0, 12, 1, ".", |
1175 | 0, DIRBLKSIZ - 12, 2, ".." | |
1176 | }; | |
1177 | ||
1178 | /* | |
1179 | * Mkdir system call | |
1180 | */ | |
031fd966 | 1181 | int |
e6e1f8be | 1182 | ufs_mkdir(ap) |
69021bc5 KM |
1183 | struct vop_mkdir_args /* { |
1184 | struct vnode *a_dvp; | |
1185 | struct vnode **a_vpp; | |
1186 | struct componentname *a_cnp; | |
1187 | struct vattr *a_vap; | |
1188 | } */ *ap; | |
88a7a62a | 1189 | { |
e6e1f8be KM |
1190 | register struct vnode *dvp = ap->a_dvp; |
1191 | register struct vattr *vap = ap->a_vap; | |
1192 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1193 | register struct inode *ip, *dp; |
c59af027 | 1194 | struct vnode *tvp; |
86fb5449 | 1195 | struct dirtemplate dirtemplate, *dtp; |
fa4f99ac CT |
1196 | struct timeval tv; |
1197 | int error, dmode; | |
7188ac27 | 1198 | |
38285224 | 1199 | #ifdef DIAGNOSTIC |
e6e1f8be | 1200 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
1201 | panic("ufs_mkdir: no name"); |
1202 | #endif | |
e6e1f8be | 1203 | dp = VTOI(dvp); |
38285224 | 1204 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
e6e1f8be | 1205 | free(cnp->cn_pnbuf, M_NAMEI); |
031fd966 | 1206 | ufs_iput(dp); |
986aedaa KM |
1207 | return (EMLINK); |
1208 | } | |
e6e1f8be | 1209 | dmode = vap->va_mode&0777; |
7188ac27 | 1210 | dmode |= IFDIR; |
88a7a62a | 1211 | /* |
655da945 KM |
1212 | * Must simulate part of maknode here to acquire the inode, but |
1213 | * not have it entered in the parent directory. The entry is made | |
1214 | * later after writing "." and ".." entries. | |
88a7a62a | 1215 | */ |
e6e1f8be KM |
1216 | if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp)) { |
1217 | free(cnp->cn_pnbuf, M_NAMEI); | |
031fd966 | 1218 | ufs_iput(dp); |
7188ac27 | 1219 | return (error); |
88a7a62a | 1220 | } |
c59af027 | 1221 | ip = VTOI(tvp); |
e6e1f8be | 1222 | ip->i_uid = cnp->cn_cred->cr_uid; |
4b61628b | 1223 | ip->i_gid = dp->i_gid; |
88a7a62a | 1224 | #ifdef QUOTA |
4b61628b | 1225 | if ((error = getinoquota(ip)) || |
e6e1f8be KM |
1226 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
1227 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 1228 | VOP_VFREE(tvp, ip->i_number, dmode); |
031fd966 KB |
1229 | ufs_iput(ip); |
1230 | ufs_iput(dp); | |
4b61628b KM |
1231 | return (error); |
1232 | } | |
88a7a62a SL |
1233 | #endif |
1234 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1235 | ip->i_mode = dmode; |
1236 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 1237 | ip->i_nlink = 2; |
fa4f99ac CT |
1238 | tv = time; |
1239 | error = VOP_UPDATE(ITOV(ip), &tv, &tv, 1); | |
88a7a62a SL |
1240 | |
1241 | /* | |
1242 | * Bump link count in parent directory | |
1243 | * to reflect work done below. Should | |
1244 | * be done before reference is created | |
1245 | * so reparation is possible if we crash. | |
1246 | */ | |
1247 | dp->i_nlink++; | |
1248 | dp->i_flag |= ICHG; | |
fa4f99ac | 1249 | if (error = VOP_UPDATE(ITOV(dp), &tv, &tv, 1)) |
394d67a8 | 1250 | goto bad; |
88a7a62a | 1251 | |
031fd966 | 1252 | /* Initialize directory with "." and ".." from static template. */ |
86fb5449 KM |
1253 | if (dvp->v_mount->mnt_maxsymlinklen > 0) |
1254 | dtp = &mastertemplate; | |
1255 | else | |
1256 | dtp = (struct dirtemplate *)&omastertemplate; | |
1257 | dirtemplate = *dtp; | |
88a7a62a SL |
1258 | dirtemplate.dot_ino = ip->i_number; |
1259 | dirtemplate.dotdot_ino = dp->i_number; | |
86cdabf6 | 1260 | error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate, |
5b169cb7 | 1261 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
e6e1f8be | 1262 | IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0, (struct proc *)0); |
7188ac27 | 1263 | if (error) { |
88a7a62a SL |
1264 | dp->i_nlink--; |
1265 | dp->i_flag |= ICHG; | |
1266 | goto bad; | |
1267 | } | |
e6e1f8be | 1268 | if (DIRBLKSIZ > VFSTOUFS(dvp->v_mount)->um_mountp->mnt_stat.f_bsize) |
031fd966 KB |
1269 | panic("ufs_mkdir: blksize"); /* XXX should grow with balloc() */ |
1270 | else { | |
23de9f20 | 1271 | ip->i_size = DIRBLKSIZ; |
15365e07 KM |
1272 | ip->i_flag |= ICHG; |
1273 | } | |
031fd966 KB |
1274 | |
1275 | /* Directory set up, now install it's entry in the parent directory. */ | |
e6e1f8be | 1276 | if (error = ufs_direnter(ip, dvp, cnp)) { |
2a5d2f56 KM |
1277 | dp->i_nlink--; |
1278 | dp->i_flag |= ICHG; | |
88a7a62a SL |
1279 | } |
1280 | bad: | |
1281 | /* | |
c59af027 KM |
1282 | * No need to do an explicit VOP_TRUNCATE here, vrele will do this |
1283 | * for us because we set the link count to 0. | |
88a7a62a | 1284 | */ |
7188ac27 | 1285 | if (error) { |
88a7a62a SL |
1286 | ip->i_nlink = 0; |
1287 | ip->i_flag |= ICHG; | |
031fd966 | 1288 | ufs_iput(ip); |
cbcdacd6 | 1289 | } else |
e1b76915 | 1290 | *ap->a_vpp = ITOV(ip); |
e6e1f8be | 1291 | FREE(cnp->cn_pnbuf, M_NAMEI); |
031fd966 | 1292 | ufs_iput(dp); |
7188ac27 | 1293 | return (error); |
88a7a62a SL |
1294 | } |
1295 | ||
1296 | /* | |
1297 | * Rmdir system call. | |
1298 | */ | |
031fd966 | 1299 | int |
e6e1f8be | 1300 | ufs_rmdir(ap) |
69021bc5 | 1301 | struct vop_rmdir_args /* { |
69021bc5 KM |
1302 | struct vnode *a_dvp; |
1303 | struct vnode *a_vp; | |
1304 | struct componentname *a_cnp; | |
1305 | } */ *ap; | |
88a7a62a | 1306 | { |
e6e1f8be KM |
1307 | register struct vnode *dvp = ap->a_dvp; |
1308 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1309 | register struct inode *ip, *dp; |
031fd966 | 1310 | int error; |
7188ac27 | 1311 | |
e1b76915 | 1312 | ip = VTOI(ap->a_vp); |
e6e1f8be | 1313 | dp = VTOI(dvp); |
88a7a62a SL |
1314 | /* |
1315 | * No rmdir "." please. | |
1316 | */ | |
1317 | if (dp == ip) { | |
e6e1f8be | 1318 | vrele(dvp); |
031fd966 | 1319 | ufs_iput(ip); |
7188ac27 | 1320 | return (EINVAL); |
88a7a62a SL |
1321 | } |
1322 | /* | |
1323 | * Verify the directory is empty (and valid). | |
1324 | * (Rmdir ".." won't be valid since | |
1325 | * ".." will contain a reference to | |
1326 | * the current directory and thus be | |
1327 | * non-empty.) | |
1328 | */ | |
031fd966 KB |
1329 | error = 0; |
1330 | if (ip->i_nlink != 2 || | |
e6e1f8be | 1331 | !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) { |
7188ac27 | 1332 | error = ENOTEMPTY; |
88a7a62a SL |
1333 | goto out; |
1334 | } | |
1335 | /* | |
1336 | * Delete reference to directory before purging | |
1337 | * inode. If we crash in between, the directory | |
1338 | * will be reattached to lost+found, | |
1339 | */ | |
e6e1f8be | 1340 | if (error = ufs_dirremove(dvp, cnp)) |
88a7a62a SL |
1341 | goto out; |
1342 | dp->i_nlink--; | |
1343 | dp->i_flag |= ICHG; | |
e6e1f8be | 1344 | cache_purge(dvp); |
031fd966 | 1345 | ufs_iput(dp); |
e6e1f8be | 1346 | dvp = NULL; |
88a7a62a SL |
1347 | /* |
1348 | * Truncate inode. The only stuff left | |
1349 | * in the directory is "." and "..". The | |
1350 | * "." reference is inconsequential since | |
1351 | * we're quashing it. The ".." reference | |
1352 | * has already been adjusted above. We've | |
1353 | * removed the "." reference and the reference | |
1354 | * in the parent directory, but there may be | |
1355 | * other hard links so decrement by 2 and | |
1356 | * worry about them later. | |
1357 | */ | |
1358 | ip->i_nlink -= 2; | |
69021bc5 KM |
1359 | error = VOP_TRUNCATE(ap->a_vp, (off_t)0, IO_SYNC, cnp->cn_cred, |
1360 | cnp->cn_proc); | |
7188ac27 | 1361 | cache_purge(ITOV(ip)); |
88a7a62a | 1362 | out: |
e6e1f8be | 1363 | if (dvp) |
031fd966 KB |
1364 | ufs_iput(dp); |
1365 | ufs_iput(ip); | |
7188ac27 | 1366 | return (error); |
88a7a62a SL |
1367 | } |
1368 | ||
7188ac27 KM |
1369 | /* |
1370 | * symlink -- make a symbolic link | |
1371 | */ | |
031fd966 | 1372 | int |
e6e1f8be | 1373 | ufs_symlink(ap) |
69021bc5 KM |
1374 | struct vop_symlink_args /* { |
1375 | struct vnode *a_dvp; | |
1376 | struct vnode **a_vpp; | |
1377 | struct componentname *a_cnp; | |
1378 | struct vattr *a_vap; | |
1379 | char *a_target; | |
1380 | } */ *ap; | |
7188ac27 | 1381 | { |
2a7acb0a KM |
1382 | register struct vnode *vp, **vpp = ap->a_vpp; |
1383 | register struct inode *ip; | |
1384 | int len, error; | |
7188ac27 | 1385 | |
e6e1f8be KM |
1386 | if (error = ufs_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp, |
1387 | vpp, ap->a_cnp)) | |
7188ac27 | 1388 | return (error); |
2a7acb0a KM |
1389 | vp = *vpp; |
1390 | len = strlen(ap->a_target); | |
1391 | if (len < vp->v_mount->mnt_maxsymlinklen) { | |
1392 | ip = VTOI(vp); | |
1393 | bcopy(ap->a_target, (char *)ip->i_shortlink, len); | |
1394 | ip->i_size = len; | |
1395 | ip->i_flag |= IUPD|ICHG; | |
1396 | } else | |
1397 | error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, | |
1398 | UIO_SYSSPACE, IO_NODELOCKED, ap->a_cnp->cn_cred, (int *)0, | |
1399 | (struct proc *)0); | |
1400 | vput(vp); | |
7188ac27 KM |
1401 | return (error); |
1402 | } | |
1403 | ||
1404 | /* | |
d8ba9f9d KM |
1405 | * Vnode op for reading directories. |
1406 | * | |
1407 | * The routine below assumes that the on-disk format of a directory | |
1408 | * is the same as that defined by <sys/dirent.h>. If the on-disk | |
1409 | * format changes, then it will be necessary to do a conversion | |
1410 | * from the on-disk format that read returns to the format defined | |
1411 | * by <sys/dirent.h>. | |
7188ac27 | 1412 | */ |
031fd966 | 1413 | int |
e6e1f8be | 1414 | ufs_readdir(ap) |
69021bc5 KM |
1415 | struct vop_readdir_args /* { |
1416 | struct vnode *a_vp; | |
1417 | struct uio *a_uio; | |
1418 | struct ucred *a_cred; | |
1419 | } */ *ap; | |
88a7a62a | 1420 | { |
e6e1f8be | 1421 | register struct uio *uio = ap->a_uio; |
86cdabf6 | 1422 | int count, lost, error; |
88a7a62a | 1423 | |
e6e1f8be | 1424 | count = uio->uio_resid; |
7188ac27 | 1425 | count &= ~(DIRBLKSIZ - 1); |
e6e1f8be KM |
1426 | lost = uio->uio_resid - count; |
1427 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1428 | return (EINVAL); |
e6e1f8be KM |
1429 | uio->uio_resid = count; |
1430 | uio->uio_iov->iov_len = count; | |
86fb5449 KM |
1431 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1432 | if (ap->a_vp->v_mount->mnt_maxsymlinklen > 0) { | |
1433 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1434 | } else { | |
1435 | struct dirent *dp, *edp; | |
1436 | struct uio auio; | |
1437 | struct iovec aiov; | |
1438 | caddr_t dirbuf; | |
1439 | int readcnt; | |
1440 | u_char tmp; | |
1441 | ||
1442 | auio = *uio; | |
1443 | auio.uio_iov = &aiov; | |
1444 | auio.uio_iovcnt = 1; | |
1445 | auio.uio_segflg = UIO_SYSSPACE; | |
1446 | aiov.iov_len = count; | |
1447 | MALLOC(dirbuf, caddr_t, count, M_TEMP, M_WAITOK); | |
1448 | aiov.iov_base = dirbuf; | |
f8776d0c | 1449 | error = VOP_READ(ap->a_vp, &auio, 0, ap->a_cred); |
86fb5449 KM |
1450 | if (error == 0) { |
1451 | readcnt = count - auio.uio_resid; | |
1452 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1453 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
1454 | tmp = dp->d_namlen; | |
1455 | dp->d_namlen = dp->d_type; | |
1456 | dp->d_type = tmp; | |
1457 | if (dp->d_reclen > 0) { | |
1458 | dp = (struct dirent *) | |
1459 | ((char *)dp + dp->d_reclen); | |
1460 | } else { | |
1461 | error = EIO; | |
1462 | break; | |
1463 | } | |
1464 | } | |
1465 | if (dp >= edp) | |
1466 | error = uiomove(dirbuf, readcnt, uio); | |
1467 | } | |
1468 | FREE(dirbuf, M_TEMP); | |
1469 | } | |
1470 | # else | |
1471 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1472 | # endif | |
e6e1f8be | 1473 | uio->uio_resid += lost; |
7188ac27 KM |
1474 | return (error); |
1475 | } | |
1476 | ||
1477 | /* | |
1478 | * Return target name of a symbolic link | |
1479 | */ | |
031fd966 | 1480 | int |
e6e1f8be | 1481 | ufs_readlink(ap) |
69021bc5 KM |
1482 | struct vop_readlink_args /* { |
1483 | struct vnode *a_vp; | |
1484 | struct uio *a_uio; | |
1485 | struct ucred *a_cred; | |
1486 | } */ *ap; | |
7188ac27 | 1487 | { |
2a7acb0a KM |
1488 | register struct vnode *vp = ap->a_vp; |
1489 | register struct inode *ip = VTOI(vp); | |
3081d578 | 1490 | int isize; |
7188ac27 | 1491 | |
3081d578 KM |
1492 | isize = ip->i_size; |
1493 | if (isize < vp->v_mount->mnt_maxsymlinklen) { | |
1494 | uiomove((char *)ip->i_shortlink, isize, ap->a_uio); | |
2a7acb0a KM |
1495 | return (0); |
1496 | } | |
1497 | return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); | |
7188ac27 KM |
1498 | } |
1499 | ||
1500 | /* | |
1501 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
655da945 | 1502 | * done. If a buffer has been saved in anticipation of a CREATE, delete it. |
7188ac27 | 1503 | */ |
66955caf | 1504 | /* ARGSUSED */ |
031fd966 | 1505 | int |
e6e1f8be | 1506 | ufs_abortop(ap) |
69021bc5 KM |
1507 | struct vop_abortop_args /* { |
1508 | struct vnode *a_dvp; | |
1509 | struct componentname *a_cnp; | |
1510 | } */ *ap; | |
7188ac27 | 1511 | { |
e1b76915 JH |
1512 | if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) |
1513 | FREE(ap->a_cnp->cn_pnbuf, M_NAMEI); | |
66955caf | 1514 | return (0); |
7188ac27 KM |
1515 | } |
1516 | ||
1c3ebc10 KM |
1517 | /* |
1518 | * Lock an inode. | |
1519 | */ | |
031fd966 | 1520 | int |
e6e1f8be | 1521 | ufs_lock(ap) |
69021bc5 KM |
1522 | struct vop_lock_args /* { |
1523 | struct vnode *a_vp; | |
1524 | } */ *ap; | |
7188ac27 | 1525 | { |
e1b76915 | 1526 | register struct inode *ip = VTOI(ap->a_vp); |
7188ac27 KM |
1527 | |
1528 | ILOCK(ip); | |
1529 | return (0); | |
1530 | } | |
1531 | ||
1c3ebc10 KM |
1532 | /* |
1533 | * Unlock an inode. | |
1534 | */ | |
031fd966 | 1535 | int |
e6e1f8be | 1536 | ufs_unlock(ap) |
69021bc5 KM |
1537 | struct vop_unlock_args /* { |
1538 | struct vnode *a_vp; | |
1539 | } */ *ap; | |
7188ac27 | 1540 | { |
e1b76915 | 1541 | register struct inode *ip = VTOI(ap->a_vp); |
7188ac27 KM |
1542 | |
1543 | if (!(ip->i_flag & ILOCKED)) | |
1544 | panic("ufs_unlock NOT LOCKED"); | |
1545 | IUNLOCK(ip); | |
1546 | return (0); | |
1547 | } | |
1548 | ||
1c3ebc10 KM |
1549 | /* |
1550 | * Check for a locked inode. | |
1551 | */ | |
031fd966 | 1552 | int |
e6e1f8be | 1553 | ufs_islocked(ap) |
69021bc5 KM |
1554 | struct vop_islocked_args /* { |
1555 | struct vnode *a_vp; | |
1556 | } */ *ap; | |
1c3ebc10 KM |
1557 | { |
1558 | ||
e1b76915 | 1559 | if (VTOI(ap->a_vp)->i_flag & ILOCKED) |
1c3ebc10 KM |
1560 | return (1); |
1561 | return (0); | |
1562 | } | |
1563 | ||
88a7a62a | 1564 | /* |
4f1ff475 KM |
1565 | * Calculate the logical to physical mapping if not done already, |
1566 | * then call the device strategy routine. | |
88a7a62a | 1567 | */ |
031fd966 | 1568 | int |
e6e1f8be | 1569 | ufs_strategy(ap) |
69021bc5 KM |
1570 | struct vop_strategy_args /* { |
1571 | struct buf *a_bp; | |
1572 | } */ *ap; | |
88a7a62a | 1573 | { |
e6e1f8be KM |
1574 | register struct buf *bp = ap->a_bp; |
1575 | register struct vnode *vp = bp->b_vp; | |
031fd966 | 1576 | register struct inode *ip; |
e16fa59e KM |
1577 | int error; |
1578 | ||
e6e1f8be KM |
1579 | ip = VTOI(vp); |
1580 | if (vp->v_type == VBLK || vp->v_type == VCHR) | |
e16fa59e | 1581 | panic("ufs_strategy: spec"); |
e6e1f8be | 1582 | if (bp->b_blkno == bp->b_lblkno) { |
c59af027 | 1583 | if (error = |
c43604c7 | 1584 | VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL)) { |
e6e1f8be KM |
1585 | bp->b_error = error; |
1586 | bp->b_flags |= B_ERROR; | |
1587 | biodone(bp); | |
e16fa59e | 1588 | return (error); |
dd1d1daf | 1589 | } |
e6e1f8be KM |
1590 | if ((long)bp->b_blkno == -1) |
1591 | clrbuf(bp); | |
e16fa59e | 1592 | } |
e6e1f8be KM |
1593 | if ((long)bp->b_blkno == -1) { |
1594 | biodone(bp); | |
e16fa59e | 1595 | return (0); |
20aa076b | 1596 | } |
e16fa59e | 1597 | vp = ip->i_devvp; |
e6e1f8be | 1598 | bp->b_dev = vp->v_rdev; |
ea460dfe | 1599 | VOCALL (vp->v_op, VOFFSET(vop_strategy), ap); |
7188ac27 KM |
1600 | return (0); |
1601 | } | |
88a7a62a | 1602 | |
e16fa59e KM |
1603 | /* |
1604 | * Print out the contents of an inode. | |
1605 | */ | |
031fd966 | 1606 | int |
e6e1f8be | 1607 | ufs_print(ap) |
69021bc5 KM |
1608 | struct vop_print_args /* { |
1609 | struct vnode *a_vp; | |
1610 | } */ *ap; | |
e16fa59e | 1611 | { |
e6e1f8be KM |
1612 | register struct vnode *vp = ap->a_vp; |
1613 | register struct inode *ip = VTOI(vp); | |
e16fa59e | 1614 | |
a8f829ed KM |
1615 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1616 | major(ip->i_dev), minor(ip->i_dev)); | |
1617 | #ifdef FIFO | |
e6e1f8be KM |
1618 | if (vp->v_type == VFIFO) |
1619 | fifo_printinfo(vp); | |
a8f829ed KM |
1620 | #endif /* FIFO */ |
1621 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
4a8fb1bb | 1622 | if (ip->i_lockholder == 0) |
031fd966 | 1623 | return (0); |
4a8fb1bb KM |
1624 | printf("\towner pid %d", ip->i_lockholder); |
1625 | if (ip->i_lockwaiter) | |
1626 | printf(" waiting pid %d", ip->i_lockwaiter); | |
96bae3e0 | 1627 | printf("\n"); |
031fd966 | 1628 | return (0); |
e16fa59e KM |
1629 | } |
1630 | ||
24a31b70 KM |
1631 | /* |
1632 | * Read wrapper for special devices. | |
1633 | */ | |
031fd966 | 1634 | int |
e6e1f8be | 1635 | ufsspec_read(ap) |
69021bc5 KM |
1636 | struct vop_read_args /* { |
1637 | struct vnode *a_vp; | |
1638 | struct uio *a_uio; | |
1639 | int a_ioflag; | |
1640 | struct ucred *a_cred; | |
1641 | } */ *ap; | |
24a31b70 KM |
1642 | { |
1643 | ||
1644 | /* | |
1645 | * Set access flag. | |
1646 | */ | |
e1b76915 | 1647 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1648 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap)); |
24a31b70 KM |
1649 | } |
1650 | ||
1651 | /* | |
1652 | * Write wrapper for special devices. | |
1653 | */ | |
031fd966 | 1654 | int |
e6e1f8be | 1655 | ufsspec_write(ap) |
69021bc5 KM |
1656 | struct vop_write_args /* { |
1657 | struct vnode *a_vp; | |
1658 | struct uio *a_uio; | |
1659 | int a_ioflag; | |
1660 | struct ucred *a_cred; | |
1661 | } */ *ap; | |
24a31b70 KM |
1662 | { |
1663 | ||
1664 | /* | |
1665 | * Set update and change flags. | |
1666 | */ | |
e1b76915 | 1667 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1668 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap)); |
24a31b70 KM |
1669 | } |
1670 | ||
1671 | /* | |
1672 | * Close wrapper for special devices. | |
1673 | * | |
1674 | * Update the times on the inode then do device close. | |
1675 | */ | |
031fd966 | 1676 | int |
e6e1f8be | 1677 | ufsspec_close(ap) |
69021bc5 KM |
1678 | struct vop_close_args /* { |
1679 | struct vnode *a_vp; | |
1680 | int a_fflag; | |
1681 | struct ucred *a_cred; | |
1682 | struct proc *a_p; | |
1683 | } */ *ap; | |
24a31b70 | 1684 | { |
e1b76915 | 1685 | register struct inode *ip = VTOI(ap->a_vp); |
24a31b70 | 1686 | |
e1b76915 | 1687 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 | 1688 | ITIMES(ip, &time, &time); |
ea460dfe | 1689 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); |
24a31b70 KM |
1690 | } |
1691 | ||
d1c43d7f KM |
1692 | #ifdef FIFO |
1693 | /* | |
1694 | * Read wrapper for fifo's | |
1695 | */ | |
031fd966 | 1696 | int |
e6e1f8be | 1697 | ufsfifo_read(ap) |
69021bc5 KM |
1698 | struct vop_read_args /* { |
1699 | struct vnode *a_vp; | |
1700 | struct uio *a_uio; | |
1701 | int a_ioflag; | |
1702 | struct ucred *a_cred; | |
1703 | } */ *ap; | |
d1c43d7f | 1704 | { |
ea460dfe | 1705 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1706 | |
1707 | /* | |
1708 | * Set access flag. | |
1709 | */ | |
e1b76915 | 1710 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1711 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap)); |
d1c43d7f KM |
1712 | } |
1713 | ||
1714 | /* | |
1715 | * Write wrapper for fifo's. | |
1716 | */ | |
031fd966 | 1717 | int |
e6e1f8be | 1718 | ufsfifo_write(ap) |
69021bc5 KM |
1719 | struct vop_write_args /* { |
1720 | struct vnode *a_vp; | |
1721 | struct uio *a_uio; | |
1722 | int a_ioflag; | |
1723 | struct ucred *a_cred; | |
1724 | } */ *ap; | |
d1c43d7f | 1725 | { |
ea460dfe | 1726 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1727 | |
1728 | /* | |
1729 | * Set update and change flags. | |
1730 | */ | |
e1b76915 | 1731 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1732 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap)); |
d1c43d7f KM |
1733 | } |
1734 | ||
1735 | /* | |
1736 | * Close wrapper for fifo's. | |
1737 | * | |
1738 | * Update the times on the inode then do device close. | |
1739 | */ | |
e6e1f8be | 1740 | ufsfifo_close(ap) |
69021bc5 KM |
1741 | struct vop_close_args /* { |
1742 | struct vnode *a_vp; | |
1743 | int a_fflag; | |
1744 | struct ucred *a_cred; | |
1745 | struct proc *a_p; | |
1746 | } */ *ap; | |
d1c43d7f | 1747 | { |
ea460dfe | 1748 | extern int (**fifo_vnodeop_p)(); |
e1b76915 | 1749 | register struct inode *ip = VTOI(ap->a_vp); |
d1c43d7f | 1750 | |
e1b76915 | 1751 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
d1c43d7f | 1752 | ITIMES(ip, &time, &time); |
ea460dfe | 1753 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); |
d1c43d7f KM |
1754 | } |
1755 | #endif /* FIFO */ | |
1756 | ||
0b0bf936 KM |
1757 | /* |
1758 | * Advisory record locking support | |
1759 | */ | |
031fd966 | 1760 | int |
e6e1f8be | 1761 | ufs_advlock(ap) |
69021bc5 KM |
1762 | struct vop_advlock_args /* { |
1763 | struct vnode *a_vp; | |
1764 | caddr_t a_id; | |
1765 | int a_op; | |
1766 | struct flock *a_fl; | |
1767 | int a_flags; | |
1768 | } */ *ap; | |
0b0bf936 | 1769 | { |
e1b76915 | 1770 | register struct inode *ip = VTOI(ap->a_vp); |
e6e1f8be | 1771 | register struct flock *fl = ap->a_fl; |
0b0bf936 KM |
1772 | register struct lockf *lock; |
1773 | off_t start, end; | |
1774 | int error; | |
1775 | ||
1776 | /* | |
1777 | * Avoid the common case of unlocking when inode has no locks. | |
1778 | */ | |
1779 | if (ip->i_lockf == (struct lockf *)0) { | |
e1b76915 | 1780 | if (ap->a_op != F_SETLK) { |
e6e1f8be | 1781 | fl->l_type = F_UNLCK; |
0b0bf936 KM |
1782 | return (0); |
1783 | } | |
1784 | } | |
1785 | /* | |
1786 | * Convert the flock structure into a start and end. | |
1787 | */ | |
e6e1f8be | 1788 | switch (fl->l_whence) { |
0b0bf936 KM |
1789 | |
1790 | case SEEK_SET: | |
1791 | case SEEK_CUR: | |
1792 | /* | |
1793 | * Caller is responsible for adding any necessary offset | |
1794 | * when SEEK_CUR is used. | |
1795 | */ | |
e6e1f8be | 1796 | start = fl->l_start; |
0b0bf936 KM |
1797 | break; |
1798 | ||
1799 | case SEEK_END: | |
e6e1f8be | 1800 | start = ip->i_size + fl->l_start; |
0b0bf936 KM |
1801 | break; |
1802 | ||
1803 | default: | |
1804 | return (EINVAL); | |
1805 | } | |
1806 | if (start < 0) | |
1807 | return (EINVAL); | |
e6e1f8be | 1808 | if (fl->l_len == 0) |
0b0bf936 KM |
1809 | end = -1; |
1810 | else | |
e6e1f8be | 1811 | end = start + fl->l_len - 1; |
0b0bf936 KM |
1812 | /* |
1813 | * Create the lockf structure | |
1814 | */ | |
1815 | MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK); | |
1816 | lock->lf_start = start; | |
1817 | lock->lf_end = end; | |
e1b76915 | 1818 | lock->lf_id = ap->a_id; |
0b0bf936 | 1819 | lock->lf_inode = ip; |
e6e1f8be | 1820 | lock->lf_type = fl->l_type; |
0b0bf936 KM |
1821 | lock->lf_next = (struct lockf *)0; |
1822 | lock->lf_block = (struct lockf *)0; | |
e1b76915 | 1823 | lock->lf_flags = ap->a_flags; |
0b0bf936 KM |
1824 | /* |
1825 | * Do the requested operation. | |
1826 | */ | |
e1b76915 | 1827 | switch(ap->a_op) { |
0b0bf936 | 1828 | case F_SETLK: |
b9fc1077 | 1829 | return (lf_setlock(lock)); |
0b0bf936 KM |
1830 | |
1831 | case F_UNLCK: | |
b9fc1077 KM |
1832 | error = lf_clearlock(lock); |
1833 | FREE(lock, M_LOCKF); | |
1834 | return (error); | |
0b0bf936 KM |
1835 | |
1836 | case F_GETLK: | |
e6e1f8be | 1837 | error = lf_getlock(lock, fl); |
b9fc1077 KM |
1838 | FREE(lock, M_LOCKF); |
1839 | return (error); | |
0b0bf936 KM |
1840 | |
1841 | default: | |
1842 | free(lock, M_LOCKF); | |
1843 | return (EINVAL); | |
1844 | } | |
1845 | /* NOTREACHED */ | |
1846 | } | |
5b169cb7 KM |
1847 | |
1848 | /* | |
031fd966 KB |
1849 | * Initialize the vnode associated with a new inode, handle aliased |
1850 | * vnodes. | |
5b169cb7 | 1851 | */ |
031fd966 | 1852 | int |
c59af027 | 1853 | ufs_vinit(mntp, specops, fifoops, vpp) |
031fd966 | 1854 | struct mount *mntp; |
1d52469b JH |
1855 | int (**specops)(); |
1856 | int (**fifoops)(); | |
031fd966 KB |
1857 | struct vnode **vpp; |
1858 | { | |
cda1e3e8 | 1859 | struct inode *ip; |
031fd966 KB |
1860 | struct vnode *vp, *nvp; |
1861 | ||
1862 | vp = *vpp; | |
1863 | ip = VTOI(vp); | |
1864 | switch(vp->v_type = IFTOVT(ip->i_mode)) { | |
1865 | case VCHR: | |
1866 | case VBLK: | |
c59af027 | 1867 | vp->v_op = specops; |
031fd966 | 1868 | if (nvp = checkalias(vp, ip->i_rdev, mntp)) { |
c59af027 | 1869 | /* |
4a8fb1bb | 1870 | * Discard unneeded vnode, but save its inode. |
c59af027 | 1871 | */ |
cda1e3e8 | 1872 | ufs_ihashrem(ip); |
4a8fb1bb KM |
1873 | IUNLOCK(ip); |
1874 | nvp->v_data = vp->v_data; | |
1875 | vp->v_data = NULL; | |
9342689a | 1876 | vp->v_op = spec_vnodeop_p; |
4a8fb1bb KM |
1877 | vrele(vp); |
1878 | vgone(vp); | |
c59af027 | 1879 | /* |
4a8fb1bb | 1880 | * Reinitialize aliased inode. |
c59af027 | 1881 | */ |
4a8fb1bb KM |
1882 | vp = nvp; |
1883 | ip->i_vnode = vp; | |
1884 | ufs_ihashins(ip); | |
031fd966 KB |
1885 | } |
1886 | break; | |
1887 | case VFIFO: | |
1888 | #ifdef FIFO | |
c59af027 | 1889 | vp->v_op = fifoops; |
031fd966 KB |
1890 | break; |
1891 | #else | |
1892 | return (EOPNOTSUPP); | |
1893 | #endif | |
1894 | } | |
031fd966 KB |
1895 | if (ip->i_number == ROOTINO) |
1896 | vp->v_flag |= VROOT; | |
1a3cb193 KM |
1897 | /* |
1898 | * Initialize modrev times | |
1899 | */ | |
1900 | SETHIGH(ip->i_modrev, mono_time.tv_sec); | |
1901 | SETLOW(ip->i_modrev, mono_time.tv_usec * 4294); | |
031fd966 KB |
1902 | *vpp = vp; |
1903 | return (0); | |
1904 | } | |
5b169cb7 | 1905 | |
031fd966 KB |
1906 | /* |
1907 | * Allocate a new inode. | |
1908 | */ | |
1909 | int | |
6e57e9ff | 1910 | ufs_makeinode(mode, dvp, vpp, cnp) |
031fd966 | 1911 | int mode; |
cfef4373 | 1912 | struct vnode *dvp; |
c59af027 | 1913 | struct vnode **vpp; |
cfef4373 | 1914 | struct componentname *cnp; |
031fd966 KB |
1915 | { |
1916 | register struct inode *ip, *pdir; | |
fa4f99ac | 1917 | struct timeval tv; |
c59af027 | 1918 | struct vnode *tvp; |
031fd966 KB |
1919 | int error; |
1920 | ||
cfef4373 | 1921 | pdir = VTOI(dvp); |
38285224 | 1922 | #ifdef DIAGNOSTIC |
cfef4373 | 1923 | if ((cnp->cn_flags & HASBUF) == 0) |
031fd966 KB |
1924 | panic("ufs_makeinode: no name"); |
1925 | #endif | |
c59af027 | 1926 | *vpp = NULL; |
031fd966 KB |
1927 | if ((mode & IFMT) == 0) |
1928 | mode |= IFREG; | |
1929 | ||
cfef4373 JH |
1930 | if (error = VOP_VALLOC(dvp, mode, cnp->cn_cred, &tvp)) { |
1931 | free(cnp->cn_pnbuf, M_NAMEI); | |
031fd966 KB |
1932 | ufs_iput(pdir); |
1933 | return (error); | |
1934 | } | |
c59af027 | 1935 | ip = VTOI(tvp); |
cfef4373 | 1936 | ip->i_uid = cnp->cn_cred->cr_uid; |
031fd966 KB |
1937 | ip->i_gid = pdir->i_gid; |
1938 | #ifdef QUOTA | |
1939 | if ((error = getinoquota(ip)) || | |
cfef4373 JH |
1940 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
1941 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 1942 | VOP_VFREE(tvp, ip->i_number, mode); |
031fd966 KB |
1943 | ufs_iput(ip); |
1944 | ufs_iput(pdir); | |
1945 | return (error); | |
1946 | } | |
1947 | #endif | |
1948 | ip->i_flag |= IACC|IUPD|ICHG; | |
1949 | ip->i_mode = mode; | |
c59af027 | 1950 | tvp->v_type = IFTOVT(mode); /* Rest init'd in iget() */ |
031fd966 | 1951 | ip->i_nlink = 1; |
cfef4373 JH |
1952 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) && |
1953 | suser(cnp->cn_cred, NULL)) | |
031fd966 KB |
1954 | ip->i_mode &= ~ISGID; |
1955 | ||
1956 | /* | |
1957 | * Make sure inode goes to disk before directory entry. | |
1958 | */ | |
fa4f99ac CT |
1959 | tv = time; |
1960 | if (error = VOP_UPDATE(tvp, &tv, &tv, 1)) | |
031fd966 | 1961 | goto bad; |
cfef4373 | 1962 | if (error = ufs_direnter(ip, dvp, cnp)) |
031fd966 | 1963 | goto bad; |
cfef4373 JH |
1964 | if ((cnp->cn_flags & SAVESTART) == 0) |
1965 | FREE(cnp->cn_pnbuf, M_NAMEI); | |
031fd966 | 1966 | ufs_iput(pdir); |
c59af027 | 1967 | *vpp = tvp; |
031fd966 KB |
1968 | return (0); |
1969 | ||
1970 | bad: | |
1971 | /* | |
1972 | * Write error occurred trying to update the inode | |
1973 | * or the directory so must deallocate the inode. | |
1974 | */ | |
cfef4373 | 1975 | free(cnp->cn_pnbuf, M_NAMEI); |
031fd966 KB |
1976 | ufs_iput(pdir); |
1977 | ip->i_nlink = 0; | |
1978 | ip->i_flag |= ICHG; | |
1979 | ufs_iput(ip); | |
1980 | return (error); | |
1981 | } |