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 | * |
ebe49688 | 7 | * @(#)ufs_vnops.c 7.103 (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 | } | |
e6e1f8be | 219 | if ((ip->i_mode & mode) != 0) |
4b61628b KM |
220 | return (0); |
221 | return (EACCES); | |
3e78e260 BJ |
222 | } |
223 | ||
7188ac27 | 224 | /* ARGSUSED */ |
031fd966 | 225 | int |
e6e1f8be | 226 | ufs_getattr(ap) |
69021bc5 KM |
227 | struct vop_getattr_args /* { |
228 | struct vnode *a_vp; | |
229 | struct vattr *a_vap; | |
230 | struct ucred *a_cred; | |
231 | struct proc *a_p; | |
232 | } */ *ap; | |
3e78e260 | 233 | { |
e6e1f8be KM |
234 | register struct vnode *vp = ap->a_vp; |
235 | register struct inode *ip = VTOI(vp); | |
236 | register struct vattr *vap = ap->a_vap; | |
3e78e260 | 237 | |
7188ac27 | 238 | ITIMES(ip, &time, &time); |
3e78e260 | 239 | /* |
7188ac27 | 240 | * Copy from inode table |
3e78e260 | 241 | */ |
e6e1f8be KM |
242 | vap->va_fsid = ip->i_dev; |
243 | vap->va_fileid = ip->i_number; | |
244 | vap->va_mode = ip->i_mode & ~IFMT; | |
245 | vap->va_nlink = ip->i_nlink; | |
246 | vap->va_uid = ip->i_uid; | |
247 | vap->va_gid = ip->i_gid; | |
248 | vap->va_rdev = (dev_t)ip->i_rdev; | |
d9011ad6 | 249 | vap->va_size = ip->i_din.di_size; |
e6e1f8be KM |
250 | vap->va_atime = ip->i_atime; |
251 | vap->va_mtime = ip->i_mtime; | |
252 | vap->va_ctime = ip->i_ctime; | |
253 | vap->va_flags = ip->i_flags; | |
254 | vap->va_gen = ip->i_gen; | |
7188ac27 | 255 | /* this doesn't belong here */ |
e6e1f8be KM |
256 | if (vp->v_type == VBLK) |
257 | vap->va_blocksize = BLKDEV_IOSIZE; | |
258 | else if (vp->v_type == VCHR) | |
259 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 260 | else |
e6e1f8be KM |
261 | vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; |
262 | vap->va_bytes = dbtob(ip->i_blocks); | |
e6e1f8be KM |
263 | vap->va_type = vp->v_type; |
264 | vap->va_filerev = ip->i_modrev; | |
7188ac27 | 265 | return (0); |
3e78e260 BJ |
266 | } |
267 | ||
268 | /* | |
7188ac27 | 269 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 270 | */ |
031fd966 | 271 | int |
e6e1f8be | 272 | ufs_setattr(ap) |
69021bc5 KM |
273 | struct vop_setattr_args /* { |
274 | struct vnode *a_vp; | |
275 | struct vattr *a_vap; | |
276 | struct ucred *a_cred; | |
277 | struct proc *a_p; | |
278 | } */ *ap; | |
3e78e260 | 279 | { |
e6e1f8be KM |
280 | register struct vattr *vap = ap->a_vap; |
281 | register struct vnode *vp = ap->a_vp; | |
282 | register struct inode *ip = VTOI(vp); | |
283 | register struct ucred *cred = ap->a_cred; | |
284 | register struct proc *p = ap->a_p; | |
7e11a0c9 | 285 | struct timeval atimeval, mtimeval; |
031fd966 | 286 | int error; |
b4d1aee9 | 287 | |
7188ac27 | 288 | /* |
031fd966 | 289 | * Check for unsettable attributes. |
7188ac27 | 290 | */ |
e6e1f8be KM |
291 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || |
292 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
293 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
294 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { | |
7188ac27 | 295 | return (EINVAL); |
b4d1aee9 | 296 | } |
7188ac27 KM |
297 | /* |
298 | * Go through the fields and update iff not VNOVAL. | |
299 | */ | |
e6e1f8be KM |
300 | if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) |
301 | if (error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, p)) | |
7188ac27 | 302 | return (error); |
e6e1f8be KM |
303 | if (vap->va_size != VNOVAL) { |
304 | if (vp->v_type == VDIR) | |
7188ac27 | 305 | return (EISDIR); |
69021bc5 | 306 | if (error = VOP_TRUNCATE(vp, vap->va_size, 0, cred, p)) |
7188ac27 | 307 | return (error); |
3e78e260 | 308 | } |
e6e1f8be | 309 | ip = VTOI(vp); |
7e11a0c9 | 310 | if (vap->va_atime.ts_sec != VNOVAL || vap->va_mtime.ts_sec != VNOVAL) { |
e6e1f8be KM |
311 | if (cred->cr_uid != ip->i_uid && |
312 | (error = suser(cred, &p->p_acflag))) | |
de412887 | 313 | return (error); |
7e11a0c9 | 314 | if (vap->va_atime.ts_sec != VNOVAL) |
7188ac27 | 315 | ip->i_flag |= IACC; |
7e11a0c9 | 316 | if (vap->va_mtime.ts_sec != VNOVAL) |
7188ac27 KM |
317 | ip->i_flag |= IUPD; |
318 | ip->i_flag |= ICHG; | |
7e11a0c9 KM |
319 | atimeval.tv_sec = vap->va_atime.ts_sec; |
320 | atimeval.tv_usec = vap->va_atime.ts_nsec / 1000; | |
321 | mtimeval.tv_sec = vap->va_mtime.ts_sec; | |
322 | mtimeval.tv_usec = vap->va_mtime.ts_nsec / 1000; | |
323 | if (error = VOP_UPDATE(vp, &atimeval, &mtimeval, 1)) | |
7188ac27 | 324 | return (error); |
5485e062 | 325 | } |
031fd966 | 326 | error = 0; |
e6e1f8be KM |
327 | if (vap->va_mode != (mode_t)VNOVAL) |
328 | error = ufs_chmod(vp, (int)vap->va_mode, cred, p); | |
329 | if (vap->va_flags != VNOVAL) { | |
330 | if (cred->cr_uid != ip->i_uid && | |
331 | (error = suser(cred, &p->p_acflag))) | |
d07fc92a | 332 | return (error); |
e6e1f8be KM |
333 | if (cred->cr_uid == 0) { |
334 | ip->i_flags = vap->va_flags; | |
d07fc92a KM |
335 | } else { |
336 | ip->i_flags &= 0xffff0000; | |
e6e1f8be | 337 | ip->i_flags |= (vap->va_flags & 0xffff); |
d07fc92a KM |
338 | } |
339 | ip->i_flag |= ICHG; | |
340 | } | |
7188ac27 | 341 | return (error); |
528f664c SL |
342 | } |
343 | ||
4f083fd7 SL |
344 | /* |
345 | * Change the mode on a file. | |
346 | * Inode must be locked before calling. | |
347 | */ | |
ca3e8b68 | 348 | static int |
8e232de3 | 349 | ufs_chmod(vp, mode, cred, p) |
7188ac27 | 350 | register struct vnode *vp; |
528f664c | 351 | register int mode; |
8e232de3 | 352 | register struct ucred *cred; |
c6f5111d | 353 | struct proc *p; |
528f664c | 354 | { |
7188ac27 | 355 | register struct inode *ip = VTOI(vp); |
de412887 | 356 | int error; |
197da11b | 357 | |
de412887 | 358 | if (cred->cr_uid != ip->i_uid && |
c6f5111d | 359 | (error = suser(cred, &p->p_acflag))) |
de412887 | 360 | return (error); |
7188ac27 | 361 | if (cred->cr_uid) { |
e57b6138 | 362 | if (vp->v_type != VDIR && (mode & ISVTX)) |
39b5be4c | 363 | return (EFTYPE); |
e57b6138 | 364 | if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) |
39b5be4c | 365 | return (EPERM); |
f94ceb3b | 366 | } |
39b5be4c | 367 | ip->i_mode &= ~07777; |
7188ac27 | 368 | ip->i_mode |= mode & 07777; |
3e78e260 | 369 | ip->i_flag |= ICHG; |
7188ac27 | 370 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
8986c97c | 371 | (void) vnode_pager_uncache(vp); |
47af7174 | 372 | return (0); |
5485e062 BJ |
373 | } |
374 | ||
528f664c SL |
375 | /* |
376 | * Perform chown operation on inode ip; | |
377 | * inode must be locked prior to call. | |
378 | */ | |
ca3e8b68 | 379 | static int |
8e232de3 | 380 | ufs_chown(vp, uid, gid, cred, p) |
7188ac27 | 381 | register struct vnode *vp; |
38285224 KM |
382 | uid_t uid; |
383 | gid_t gid; | |
8e232de3 | 384 | struct ucred *cred; |
c6f5111d | 385 | struct proc *p; |
528f664c | 386 | { |
7188ac27 | 387 | register struct inode *ip = VTOI(vp); |
4b61628b KM |
388 | uid_t ouid; |
389 | gid_t ogid; | |
390 | int error = 0; | |
528f664c | 391 | #ifdef QUOTA |
4b61628b KM |
392 | register int i; |
393 | long change; | |
bb1b75f4 | 394 | #endif |
528f664c | 395 | |
38285224 | 396 | if (uid == (uid_t)VNOVAL) |
bb1b75f4 | 397 | uid = ip->i_uid; |
38285224 | 398 | if (gid == (gid_t)VNOVAL) |
bb1b75f4 | 399 | gid = ip->i_gid; |
18b0bce6 KB |
400 | /* |
401 | * If we don't own the file, are trying to change the owner | |
402 | * of the file, or are not a member of the target group, | |
403 | * the caller must be superuser or the call fails. | |
404 | */ | |
7188ac27 KM |
405 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
406 | !groupmember((gid_t)gid, cred)) && | |
c6f5111d | 407 | (error = suser(cred, &p->p_acflag))) |
7188ac27 | 408 | return (error); |
4b61628b KM |
409 | ouid = ip->i_uid; |
410 | ogid = ip->i_gid; | |
bb1b75f4 | 411 | #ifdef QUOTA |
4b61628b KM |
412 | if (error = getinoquota(ip)) |
413 | return (error); | |
414 | if (ouid == uid) { | |
415 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
416 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
417 | } | |
418 | if (ogid == gid) { | |
419 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
420 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
421 | } | |
422 | change = ip->i_blocks; | |
423 | (void) chkdq(ip, -change, cred, CHOWN); | |
424 | (void) chkiq(ip, -1, cred, CHOWN); | |
425 | for (i = 0; i < MAXQUOTAS; i++) { | |
426 | dqrele(vp, ip->i_dquot[i]); | |
427 | ip->i_dquot[i] = NODQUOT; | |
428 | } | |
f94ceb3b | 429 | #endif |
bb1b75f4 SL |
430 | ip->i_uid = uid; |
431 | ip->i_gid = gid; | |
528f664c | 432 | #ifdef QUOTA |
4b61628b KM |
433 | if ((error = getinoquota(ip)) == 0) { |
434 | if (ouid == uid) { | |
435 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
436 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
437 | } | |
438 | if (ogid == gid) { | |
439 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
440 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
441 | } | |
442 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
443 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
722a9b31 | 444 | goto good; |
4b61628b KM |
445 | else |
446 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
447 | } | |
448 | for (i = 0; i < MAXQUOTAS; i++) { | |
449 | dqrele(vp, ip->i_dquot[i]); | |
450 | ip->i_dquot[i] = NODQUOT; | |
451 | } | |
452 | } | |
453 | ip->i_uid = ouid; | |
454 | ip->i_gid = ogid; | |
455 | if (getinoquota(ip) == 0) { | |
456 | if (ouid == uid) { | |
457 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
458 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
459 | } | |
460 | if (ogid == gid) { | |
461 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
462 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
463 | } | |
722a9b31 KM |
464 | (void) chkdq(ip, change, cred, FORCE|CHOWN); |
465 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
6cb69bbe | 466 | (void) getinoquota(ip); |
4b61628b | 467 | } |
6cb69bbe | 468 | return (error); |
722a9b31 | 469 | good: |
6cb69bbe KM |
470 | if (getinoquota(ip)) |
471 | panic("chown: lost quota"); | |
472 | #endif /* QUOTA */ | |
4b61628b KM |
473 | if (ouid != uid || ogid != gid) |
474 | ip->i_flag |= ICHG; | |
475 | if (ouid != uid && cred->cr_uid != 0) | |
476 | ip->i_mode &= ~ISUID; | |
477 | if (ogid != gid && cred->cr_uid != 0) | |
478 | ip->i_mode &= ~ISGID; | |
479 | return (0); | |
d67a03eb BJ |
480 | } |
481 | ||
7188ac27 | 482 | /* ARGSUSED */ |
031fd966 | 483 | int |
e6e1f8be | 484 | ufs_ioctl(ap) |
69021bc5 KM |
485 | struct vop_ioctl_args /* { |
486 | struct vnode *a_vp; | |
487 | int a_command; | |
488 | caddr_t a_data; | |
489 | int a_fflag; | |
490 | struct ucred *a_cred; | |
491 | struct proc *a_p; | |
492 | } */ *ap; | |
bb1b75f4 | 493 | { |
bb1b75f4 | 494 | |
7188ac27 KM |
495 | return (ENOTTY); |
496 | } | |
497 | ||
498 | /* ARGSUSED */ | |
031fd966 | 499 | int |
e6e1f8be | 500 | ufs_select(ap) |
69021bc5 KM |
501 | struct vop_select_args /* { |
502 | struct vnode *a_vp; | |
503 | int a_which; | |
504 | int a_fflags; | |
505 | struct ucred *a_cred; | |
506 | struct proc *a_p; | |
507 | } */ *ap; | |
7188ac27 KM |
508 | { |
509 | ||
5b169cb7 KM |
510 | /* |
511 | * We should really check to see if I/O is possible. | |
512 | */ | |
513 | return (1); | |
bb1b75f4 | 514 | } |
d67a03eb | 515 | |
4f083fd7 | 516 | /* |
7188ac27 KM |
517 | * Mmap a file |
518 | * | |
519 | * NB Currently unsupported. | |
4f083fd7 | 520 | */ |
7188ac27 | 521 | /* ARGSUSED */ |
031fd966 | 522 | int |
e6e1f8be | 523 | ufs_mmap(ap) |
69021bc5 KM |
524 | struct vop_mmap_args /* { |
525 | struct vnode *a_vp; | |
526 | int a_fflags; | |
527 | struct ucred *a_cred; | |
528 | struct proc *a_p; | |
529 | } */ *ap; | |
d67a03eb | 530 | { |
d67a03eb | 531 | |
7188ac27 | 532 | return (EINVAL); |
d67a03eb | 533 | } |
64d3a787 | 534 | |
4f083fd7 | 535 | /* |
7188ac27 KM |
536 | * Seek on a file |
537 | * | |
538 | * Nothing to do, so just return. | |
4f083fd7 | 539 | */ |
7188ac27 | 540 | /* ARGSUSED */ |
031fd966 | 541 | int |
e6e1f8be | 542 | ufs_seek(ap) |
69021bc5 KM |
543 | struct vop_seek_args /* { |
544 | struct vnode *a_vp; | |
545 | off_t a_oldoff; | |
546 | off_t a_newoff; | |
547 | struct ucred *a_cred; | |
548 | } */ *ap; | |
528f664c | 549 | { |
7188ac27 KM |
550 | |
551 | return (0); | |
552 | } | |
553 | ||
554 | /* | |
555 | * ufs remove | |
556 | * Hard to avoid races here, especially | |
557 | * in unlinking directories. | |
558 | */ | |
031fd966 | 559 | int |
e6e1f8be | 560 | ufs_remove(ap) |
69021bc5 KM |
561 | struct vop_remove_args /* { |
562 | struct vnode *a_dvp; | |
563 | struct vnode *a_vp; | |
564 | struct componentname *a_cnp; | |
565 | } */ *ap; | |
7188ac27 KM |
566 | { |
567 | register struct inode *ip, *dp; | |
568 | int error; | |
569 | ||
e1b76915 JH |
570 | ip = VTOI(ap->a_vp); |
571 | dp = VTOI(ap->a_dvp); | |
572 | error = ufs_dirremove(ap->a_dvp, ap->a_cnp); | |
7188ac27 KM |
573 | if (!error) { |
574 | ip->i_nlink--; | |
575 | ip->i_flag |= ICHG; | |
528f664c | 576 | } |
7188ac27 KM |
577 | if (dp == ip) |
578 | vrele(ITOV(ip)); | |
579 | else | |
031fd966 KB |
580 | ufs_iput(ip); |
581 | ufs_iput(dp); | |
7188ac27 | 582 | return (error); |
4f083fd7 SL |
583 | } |
584 | ||
585 | /* | |
7188ac27 | 586 | * link vnode call |
4f083fd7 | 587 | */ |
031fd966 | 588 | int |
e6e1f8be | 589 | ufs_link(ap) |
69021bc5 KM |
590 | struct vop_link_args /* { |
591 | struct vnode *a_vp; | |
592 | struct vnode *a_tdvp; | |
593 | struct componentname *a_cnp; | |
594 | } */ *ap; | |
4f083fd7 | 595 | { |
e6e1f8be KM |
596 | register struct vnode *vp = ap->a_vp; |
597 | register struct vnode *tdvp = ap->a_tdvp; | |
598 | register struct componentname *cnp = ap->a_cnp; | |
031fd966 | 599 | register struct inode *ip; |
fa4f99ac | 600 | struct timeval tv; |
7188ac27 | 601 | int error; |
4f083fd7 | 602 | |
e6e1f8be KM |
603 | if (vp->v_mount != tdvp->v_mount) { |
604 | VOP_ABORTOP(vp, cnp); | |
605 | if (tdvp == vp) | |
606 | vrele(vp); | |
3330c9fe | 607 | else |
e6e1f8be | 608 | vput(vp); |
3330c9fe JSP |
609 | return (EXDEV); |
610 | } | |
611 | ||
38285224 | 612 | #ifdef DIAGNOSTIC |
e6e1f8be | 613 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
614 | panic("ufs_link: no name"); |
615 | #endif | |
e6e1f8be | 616 | ip = VTOI(tdvp); |
38285224 | 617 | if ((nlink_t)ip->i_nlink >= LINK_MAX) { |
e6e1f8be | 618 | free(cnp->cn_pnbuf, M_NAMEI); |
986aedaa | 619 | return (EMLINK); |
655da945 | 620 | } |
e6e1f8be | 621 | if (vp != tdvp) |
7188ac27 | 622 | ILOCK(ip); |
7188ac27 KM |
623 | ip->i_nlink++; |
624 | ip->i_flag |= ICHG; | |
fa4f99ac CT |
625 | tv = time; |
626 | error = VOP_UPDATE(tdvp, &tv, &tv, 1); | |
7188ac27 | 627 | if (!error) |
e6e1f8be KM |
628 | error = ufs_direnter(ip, vp, cnp); |
629 | if (vp != tdvp) | |
7188ac27 | 630 | IUNLOCK(ip); |
e6e1f8be KM |
631 | FREE(cnp->cn_pnbuf, M_NAMEI); |
632 | vput(vp); | |
7188ac27 KM |
633 | if (error) { |
634 | ip->i_nlink--; | |
82252d2b | 635 | ip->i_flag |= ICHG; |
7188ac27 KM |
636 | } |
637 | return (error); | |
528f664c SL |
638 | } |
639 | ||
cfef4373 JH |
640 | |
641 | ||
642 | /* | |
643 | * relookup - lookup a path name component | |
644 | * Used by lookup to re-aquire things. | |
645 | */ | |
646 | int | |
6e57e9ff | 647 | relookup(dvp, vpp, cnp) |
cfef4373 JH |
648 | struct vnode *dvp, **vpp; |
649 | struct componentname *cnp; | |
650 | { | |
cfef4373 JH |
651 | register struct vnode *dp = 0; /* the directory we are searching */ |
652 | struct vnode *tdp; /* saved dp */ | |
653 | struct mount *mp; /* mount table entry */ | |
654 | int docache; /* == 0 do not cache last component */ | |
655 | int wantparent; /* 1 => wantparent or lockparent flag */ | |
656 | int rdonly; /* lookup read-only flag bit */ | |
d36023e3 KM |
657 | char *cp; /* DEBUG: check name ptr/len */ |
658 | int newhash; /* DEBUG: check name hash */ | |
cfef4373 | 659 | int error = 0; |
cfef4373 JH |
660 | |
661 | /* | |
662 | * Setup: break out flag bits into variables. | |
663 | */ | |
664 | wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); | |
665 | docache = (cnp->cn_flags & NOCACHE) ^ NOCACHE; | |
d7961b1d JH |
666 | if (cnp->cn_nameiop == DELETE || |
667 | (wantparent && cnp->cn_nameiop != CREATE)) | |
cfef4373 JH |
668 | docache = 0; |
669 | rdonly = cnp->cn_flags & RDONLY; | |
670 | cnp->cn_flags &= ~ISSYMLINK; | |
671 | dp = dvp; | |
672 | VOP_LOCK(dp); | |
673 | ||
674 | /* dirloop: */ | |
675 | /* | |
676 | * Search a new directory. | |
677 | * | |
678 | * The cn_hash value is for use by vfs_cache. | |
679 | * The last component of the filename is left accessible via | |
680 | * cnp->cn_nameptr for callers that need the name. Callers needing | |
681 | * the name set the SAVENAME flag. When done, they assume | |
682 | * responsibility for freeing the pathname buffer. | |
683 | */ | |
6e57e9ff | 684 | #ifdef NAMEI_DIAGNOSTIC |
d36023e3 | 685 | for (newhash = 0, cp = cnp->cn_nameptr; *cp != 0 && *cp != '/'; cp++) |
cfef4373 JH |
686 | newhash += (unsigned char)*cp; |
687 | if (newhash != cnp->cn_hash) | |
688 | panic("relookup: bad hash"); | |
689 | if (cnp->cn_namelen != cp - cnp->cn_nameptr) | |
690 | panic ("relookup: bad len"); | |
d36023e3 KM |
691 | if (*cp != 0) |
692 | panic("relookup: not last component"); | |
cfef4373 | 693 | printf("{%s}: ", cnp->cn_nameptr); |
cfef4373 | 694 | #endif |
cfef4373 JH |
695 | |
696 | /* | |
697 | * Check for degenerate name (e.g. / or "") | |
698 | * which is a way of talking about a directory, | |
699 | * e.g. like "/." or ".". | |
700 | */ | |
701 | if (cnp->cn_nameptr[0] == '\0') { | |
702 | if (cnp->cn_nameiop != LOOKUP || wantparent) { | |
703 | error = EISDIR; | |
704 | goto bad; | |
705 | } | |
706 | if (dp->v_type != VDIR) { | |
707 | error = ENOTDIR; | |
708 | goto bad; | |
709 | } | |
710 | if (!(cnp->cn_flags & LOCKLEAF)) | |
711 | VOP_UNLOCK(dp); | |
712 | *vpp = dp; | |
713 | if (cnp->cn_flags & SAVESTART) | |
714 | panic("lookup: SAVESTART"); | |
715 | return (0); | |
716 | } | |
717 | ||
cfef4373 JH |
718 | if (cnp->cn_flags & ISDOTDOT) |
719 | panic ("relookup: lookup on dot-dot"); | |
720 | ||
721 | /* | |
722 | * We now have a segment name to search for, and a directory to search. | |
723 | */ | |
724 | if (error = VOP_LOOKUP(dp, vpp, cnp)) { | |
725 | #ifdef DIAGNOSTIC | |
726 | if (*vpp != NULL) | |
727 | panic("leaf should be empty"); | |
cfef4373 | 728 | #endif |
39a892ba | 729 | if (error != EJUSTRETURN) |
cfef4373 JH |
730 | goto bad; |
731 | /* | |
732 | * If creating and at end of pathname, then can consider | |
733 | * allowing file to be created. | |
734 | */ | |
735 | if (rdonly || (dvp->v_mount->mnt_flag & MNT_RDONLY)) { | |
736 | error = EROFS; | |
737 | goto bad; | |
738 | } | |
d36023e3 KM |
739 | /* ASSERT(dvp == ndp->ni_startdir) */ |
740 | if (cnp->cn_flags & SAVESTART) | |
741 | VREF(dvp); | |
cfef4373 JH |
742 | /* |
743 | * We return with ni_vp NULL to indicate that the entry | |
744 | * doesn't currently exist, leaving a pointer to the | |
745 | * (possibly locked) directory inode in ndp->ni_dvp. | |
746 | */ | |
cfef4373 JH |
747 | return (0); |
748 | } | |
cfef4373 | 749 | dp = *vpp; |
2021967e | 750 | |
6e57e9ff | 751 | #ifdef DIAGNOSTIC |
cfef4373 JH |
752 | /* |
753 | * Check for symbolic link | |
754 | */ | |
2021967e | 755 | if (dp->v_type == VLNK && (cnp->cn_flags & FOLLOW)) |
cfef4373 | 756 | panic ("relookup: symlink found.\n"); |
cfef4373 | 757 | #endif |
cfef4373 | 758 | |
cfef4373 | 759 | nextname: |
cfef4373 JH |
760 | /* |
761 | * Check for read-only file systems. | |
762 | */ | |
763 | if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) { | |
764 | /* | |
765 | * Disallow directory write attempts on read-only | |
766 | * file systems. | |
767 | */ | |
768 | if (rdonly || (dp->v_mount->mnt_flag & MNT_RDONLY) || | |
769 | (wantparent && | |
770 | (dvp->v_mount->mnt_flag & MNT_RDONLY))) { | |
771 | error = EROFS; | |
772 | goto bad2; | |
773 | } | |
774 | } | |
d36023e3 KM |
775 | /* ASSERT(dvp == ndp->ni_startdir) */ |
776 | if (cnp->cn_flags & SAVESTART) | |
cfef4373 | 777 | VREF(dvp); |
cfef4373 JH |
778 | |
779 | if (!wantparent) | |
780 | vrele(dvp); | |
781 | if ((cnp->cn_flags & LOCKLEAF) == 0) | |
782 | VOP_UNLOCK(dp); | |
783 | return (0); | |
784 | ||
785 | bad2: | |
786 | if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) | |
787 | VOP_UNLOCK(dvp); | |
788 | vrele(dvp); | |
789 | bad: | |
790 | vput(dp); | |
791 | *vpp = NULL; | |
792 | return (error); | |
793 | } | |
794 | ||
795 | ||
4f083fd7 SL |
796 | /* |
797 | * Rename system call. | |
798 | * rename("foo", "bar"); | |
799 | * is essentially | |
800 | * unlink("bar"); | |
801 | * link("foo", "bar"); | |
802 | * unlink("foo"); | |
803 | * but ``atomically''. Can't do full commit without saving state in the | |
804 | * inode on disk which isn't feasible at this time. Best we can do is | |
805 | * always guarantee the target exists. | |
806 | * | |
807 | * Basic algorithm is: | |
808 | * | |
809 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 810 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
811 | * from underneath us while we work (it may be truncated by |
812 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
813 | * 2) Link source to destination. If destination already exists, |
814 | * delete it first. | |
68f21562 KM |
815 | * 3) Unlink source reference to inode if still around. If a |
816 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
817 | * is different from the source, patch the ".." entry in the |
818 | * directory. | |
4f083fd7 | 819 | */ |
031fd966 | 820 | int |
e6e1f8be | 821 | ufs_rename(ap) |
69021bc5 KM |
822 | struct vop_rename_args /* { |
823 | struct vnode *a_fdvp; | |
824 | struct vnode *a_fvp; | |
825 | struct componentname *a_fcnp; | |
826 | struct vnode *a_tdvp; | |
827 | struct vnode *a_tvp; | |
828 | struct componentname *a_tcnp; | |
829 | } */ *ap; | |
528f664c | 830 | { |
e6e1f8be KM |
831 | struct vnode *tvp = ap->a_tvp; |
832 | register struct vnode *tdvp = ap->a_tdvp; | |
833 | struct vnode *fvp = ap->a_fvp; | |
834 | register struct vnode *fdvp = ap->a_fdvp; | |
835 | register struct componentname *tcnp = ap->a_tcnp; | |
836 | register struct componentname *fcnp = ap->a_fcnp; | |
4f083fd7 | 837 | register struct inode *ip, *xp, *dp; |
68f21562 | 838 | struct dirtemplate dirbuf; |
fa4f99ac | 839 | struct timeval tv; |
68f21562 | 840 | int doingdirectory = 0, oldparent = 0, newparent = 0; |
a5390dce | 841 | int error = 0; |
cfef4373 | 842 | int fdvpneedsrele = 1, tdvpneedsrele = 1; |
86fb5449 | 843 | u_char namlen; |
4f083fd7 | 844 | |
3330c9fe | 845 | /* Check for cross-device rename */ |
e6e1f8be KM |
846 | if ((fvp->v_mount != tdvp->v_mount) || |
847 | (tvp && (fvp->v_mount != tvp->v_mount))) { | |
848 | VOP_ABORTOP(tdvp, tcnp); /* XXX, why not in NFS? */ | |
849 | if (tdvp == tvp) | |
850 | vrele(tdvp); | |
3330c9fe | 851 | else |
e6e1f8be KM |
852 | vput(tdvp); |
853 | if (tvp) | |
854 | vput(tvp); | |
855 | VOP_ABORTOP(fdvp, fcnp); /* XXX, why not in NFS? */ | |
856 | vrele(fdvp); | |
857 | vrele(fvp); | |
3330c9fe JSP |
858 | return (EXDEV); |
859 | } | |
860 | ||
38285224 | 861 | #ifdef DIAGNOSTIC |
e6e1f8be KM |
862 | if ((tcnp->cn_flags & HASBUF) == 0 || |
863 | (fcnp->cn_flags & HASBUF) == 0) | |
655da945 KM |
864 | panic("ufs_rename: no name"); |
865 | #endif | |
e6e1f8be KM |
866 | dp = VTOI(fdvp); |
867 | ip = VTOI(fvp); | |
655da945 KM |
868 | /* |
869 | * Check if just deleting a link name. | |
870 | */ | |
e6e1f8be KM |
871 | if (fvp == tvp) { |
872 | VOP_ABORTOP(tdvp, tcnp); | |
873 | vput(tdvp); | |
874 | vput(tvp); | |
875 | vrele(fdvp); | |
655da945 | 876 | if ((ip->i_mode&IFMT) == IFDIR) { |
e6e1f8be KM |
877 | VOP_ABORTOP(fdvp, fcnp); |
878 | vrele(fvp); | |
655da945 KM |
879 | return (EINVAL); |
880 | } | |
881 | doingdirectory = 0; | |
882 | goto unlinkit; | |
883 | } | |
7188ac27 | 884 | ILOCK(ip); |
4f083fd7 | 885 | if ((ip->i_mode&IFMT) == IFDIR) { |
4f083fd7 | 886 | /* |
046f18d1 | 887 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 888 | */ |
e6e1f8be KM |
889 | if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || |
890 | dp == ip || (fcnp->cn_flags&ISDOTDOT) || | |
891 | (ip->i_flag & IRENAME)) { | |
892 | VOP_ABORTOP(tdvp, tcnp); | |
893 | vput(tdvp); | |
894 | if (tvp) | |
895 | vput(tvp); | |
896 | VOP_ABORTOP(fdvp, fcnp); | |
897 | vrele(fdvp); | |
898 | vput(fvp); | |
7188ac27 | 899 | return (EINVAL); |
4f083fd7 | 900 | } |
68f21562 | 901 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
902 | oldparent = dp->i_number; |
903 | doingdirectory++; | |
904 | } | |
e6e1f8be | 905 | vrele(fdvp); |
4f083fd7 SL |
906 | |
907 | /* | |
908 | * 1) Bump link count while we're moving stuff | |
909 | * around. If we crash somewhere before | |
910 | * completing our work, the link count | |
911 | * may be wrong, but correctable. | |
912 | */ | |
913 | ip->i_nlink++; | |
914 | ip->i_flag |= ICHG; | |
fa4f99ac CT |
915 | tv = time; |
916 | error = VOP_UPDATE(fvp, &tv, &tv, 1); | |
a388503d | 917 | IUNLOCK(ip); |
4f083fd7 SL |
918 | |
919 | /* | |
920 | * When the target exists, both the directory | |
7188ac27 | 921 | * and target vnodes are returned locked. |
4f083fd7 | 922 | */ |
e6e1f8be | 923 | dp = VTOI(tdvp); |
7188ac27 | 924 | xp = NULL; |
e6e1f8be KM |
925 | if (tvp) |
926 | xp = VTOI(tvp); | |
046f18d1 SL |
927 | /* |
928 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
929 | * parent) then the source directory must not be in the |
930 | * directory heirarchy above the target, as this would | |
931 | * orphan everything below the source directory. Also | |
932 | * the user must have write permission in the source so | |
933 | * as to be able to change "..". We must repeat the call | |
934 | * to namei, as the parent directory is unlocked by the | |
935 | * call to checkpath(). | |
046f18d1 | 936 | */ |
68f21562 KM |
937 | if (oldparent != dp->i_number) |
938 | newparent = dp->i_number; | |
939 | if (doingdirectory && newparent) { | |
e6e1f8be KM |
940 | VOP_LOCK(fvp); |
941 | error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc); | |
942 | VOP_UNLOCK(fvp); | |
48c3b6e8 | 943 | if (error) |
81552f0f | 944 | goto bad; |
655da945 | 945 | if (xp != NULL) |
031fd966 | 946 | ufs_iput(xp); |
e6e1f8be | 947 | if (error = ufs_checkpath(ip, dp, tcnp->cn_cred)) |
655da945 | 948 | goto out; |
e6e1f8be | 949 | if ((tcnp->cn_flags & SAVESTART) == 0) |
655da945 | 950 | panic("ufs_rename: lost to startdir"); |
5e03b55d | 951 | p->p_spare[1]--; |
e6e1f8be | 952 | if (error = relookup(tdvp, &tvp, tcnp)) |
655da945 | 953 | goto out; |
e6e1f8be | 954 | dp = VTOI(tdvp); |
655da945 | 955 | xp = NULL; |
e6e1f8be KM |
956 | if (tvp) |
957 | xp = VTOI(tvp); | |
81552f0f | 958 | } |
4f083fd7 SL |
959 | /* |
960 | * 2) If target doesn't exist, link the target | |
961 | * to the source and unlink the source. | |
962 | * Otherwise, rewrite the target directory | |
963 | * entry to reference the source inode and | |
964 | * expunge the original entry's existence. | |
965 | */ | |
4f083fd7 | 966 | if (xp == NULL) { |
7188ac27 KM |
967 | if (dp->i_dev != ip->i_dev) |
968 | panic("rename: EXDEV"); | |
4f083fd7 | 969 | /* |
68f21562 KM |
970 | * Account for ".." in new directory. |
971 | * When source and destination have the same | |
972 | * parent we don't fool with the link count. | |
4f083fd7 | 973 | */ |
68f21562 | 974 | if (doingdirectory && newparent) { |
38285224 | 975 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
986aedaa KM |
976 | error = EMLINK; |
977 | goto bad; | |
978 | } | |
4f083fd7 SL |
979 | dp->i_nlink++; |
980 | dp->i_flag |= ICHG; | |
fa4f99ac | 981 | if (error = VOP_UPDATE(ITOV(dp), &tv, &tv, 1)) |
986aedaa | 982 | goto bad; |
4f083fd7 | 983 | } |
e6e1f8be | 984 | if (error = ufs_direnter(ip, tdvp, tcnp)) { |
394d67a8 KM |
985 | if (doingdirectory && newparent) { |
986 | dp->i_nlink--; | |
987 | dp->i_flag |= ICHG; | |
fa4f99ac | 988 | (void)VOP_UPDATE(ITOV(dp), &tv, &tv, 1); |
394d67a8 KM |
989 | } |
990 | goto bad; | |
991 | } | |
031fd966 | 992 | ufs_iput(dp); |
4f083fd7 | 993 | } else { |
7188ac27 KM |
994 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
995 | panic("rename: EXDEV"); | |
e69c3c9c SL |
996 | /* |
997 | * Short circuit rename(foo, foo). | |
998 | */ | |
999 | if (xp->i_number == ip->i_number) | |
7188ac27 | 1000 | panic("rename: same file"); |
80cee150 JB |
1001 | /* |
1002 | * If the parent directory is "sticky", then the user must | |
1003 | * own the parent directory, or the destination of the rename, | |
1004 | * otherwise the destination may not be changed (except by | |
1005 | * root). This implements append-only directories. | |
1006 | */ | |
e6e1f8be KM |
1007 | if ((dp->i_mode & ISVTX) && tcnp->cn_cred->cr_uid != 0 && |
1008 | tcnp->cn_cred->cr_uid != dp->i_uid && | |
1009 | xp->i_uid != tcnp->cn_cred->cr_uid) { | |
80cee150 JB |
1010 | error = EPERM; |
1011 | goto bad; | |
1012 | } | |
4f083fd7 | 1013 | /* |
655da945 KM |
1014 | * Target must be empty if a directory and have no links |
1015 | * to it. Also, ensure source and target are compatible | |
1016 | * (both directories, or both not directories). | |
4f083fd7 SL |
1017 | */ |
1018 | if ((xp->i_mode&IFMT) == IFDIR) { | |
e6e1f8be | 1019 | if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) || |
7188ac27 | 1020 | xp->i_nlink > 2) { |
a5390dce | 1021 | error = ENOTEMPTY; |
4f083fd7 SL |
1022 | goto bad; |
1023 | } | |
1024 | if (!doingdirectory) { | |
a5390dce | 1025 | error = ENOTDIR; |
4f083fd7 SL |
1026 | goto bad; |
1027 | } | |
7188ac27 | 1028 | cache_purge(ITOV(dp)); |
4f083fd7 | 1029 | } else if (doingdirectory) { |
a5390dce | 1030 | error = EISDIR; |
4f083fd7 SL |
1031 | goto bad; |
1032 | } | |
e6e1f8be | 1033 | if (error = ufs_dirrewrite(dp, ip, tcnp)) |
7188ac27 | 1034 | goto bad; |
a62786b9 KM |
1035 | /* |
1036 | * If the target directory is in the same | |
1037 | * directory as the source directory, | |
1038 | * decrement the link count on the parent | |
1039 | * of the target directory. | |
1040 | */ | |
1041 | if (doingdirectory && !newparent) { | |
1042 | dp->i_nlink--; | |
1043 | dp->i_flag |= ICHG; | |
1044 | } | |
c59af027 | 1045 | ufs_iput(dp); |
4f083fd7 | 1046 | /* |
a5390dce SL |
1047 | * Adjust the link count of the target to |
1048 | * reflect the dirrewrite above. If this is | |
1049 | * a directory it is empty and there are | |
1050 | * no links to it, so we can squash the inode and | |
1051 | * any space associated with it. We disallowed | |
1052 | * renaming over top of a directory with links to | |
68f21562 KM |
1053 | * it above, as the remaining link would point to |
1054 | * a directory without "." or ".." entries. | |
4f083fd7 | 1055 | */ |
a5390dce | 1056 | xp->i_nlink--; |
4f083fd7 | 1057 | if (doingdirectory) { |
a5390dce SL |
1058 | if (--xp->i_nlink != 0) |
1059 | panic("rename: linked directory"); | |
422c9c21 | 1060 | error = VOP_TRUNCATE(ITOV(xp), (off_t)0, IO_SYNC, |
69021bc5 | 1061 | tcnp->cn_cred, tcnp->cn_proc); |
a5390dce | 1062 | } |
4f083fd7 | 1063 | xp->i_flag |= ICHG; |
031fd966 | 1064 | ufs_iput(xp); |
31db12cb | 1065 | xp = NULL; |
4f083fd7 SL |
1066 | } |
1067 | ||
1068 | /* | |
1069 | * 3) Unlink the source. | |
1070 | */ | |
655da945 | 1071 | unlinkit: |
e6e1f8be KM |
1072 | fcnp->cn_flags &= ~MODMASK; |
1073 | fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; | |
1074 | if ((fcnp->cn_flags & SAVESTART) == 0) | |
655da945 | 1075 | panic("ufs_rename: lost from startdir"); |
5e03b55d | 1076 | p->p_spare[1]--; |
e6e1f8be KM |
1077 | (void) relookup(fdvp, &fvp, fcnp); |
1078 | if (fvp != NULL) { | |
1079 | xp = VTOI(fvp); | |
1080 | dp = VTOI(fdvp); | |
7188ac27 | 1081 | } else { |
d9d75b8f KM |
1082 | /* |
1083 | * From name has disappeared. | |
1084 | */ | |
1085 | if (doingdirectory) | |
1086 | panic("rename: lost dir entry"); | |
1087 | vrele(ITOV(ip)); | |
1088 | return (0); | |
7188ac27 | 1089 | } |
4f083fd7 | 1090 | /* |
7188ac27 | 1091 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
1092 | * changed while the new name has been entered. If the source is |
1093 | * a file then the entry may have been unlinked or renamed. In | |
1094 | * either case there is no further work to be done. If the source | |
1095 | * is a directory then it cannot have been rmdir'ed; its link | |
1096 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 1097 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 1098 | * rename. |
4f083fd7 | 1099 | */ |
4f1a9037 | 1100 | if (xp != ip) { |
68f21562 | 1101 | if (doingdirectory) |
4f1a9037 | 1102 | panic("rename: lost dir entry"); |
68f21562 | 1103 | } else { |
4f083fd7 | 1104 | /* |
68f21562 KM |
1105 | * If the source is a directory with a |
1106 | * new parent, the link count of the old | |
1107 | * parent directory must be decremented | |
1108 | * and ".." set to point to the new parent. | |
4f083fd7 | 1109 | */ |
68f21562 | 1110 | if (doingdirectory && newparent) { |
4f083fd7 SL |
1111 | dp->i_nlink--; |
1112 | dp->i_flag |= ICHG; | |
86cdabf6 | 1113 | error = vn_rdwr(UIO_READ, ITOV(xp), (caddr_t)&dirbuf, |
7188ac27 | 1114 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 | 1115 | UIO_SYSSPACE, IO_NODELOCKED, |
e6e1f8be | 1116 | tcnp->cn_cred, (int *)0, (struct proc *)0); |
68f21562 | 1117 | if (error == 0) { |
86fb5449 KM |
1118 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1119 | if (fvp->v_mount->mnt_maxsymlinklen <= 0) | |
1120 | namlen = dirbuf.dotdot_type; | |
1121 | else | |
1122 | namlen = dirbuf.dotdot_namlen; | |
1123 | # else | |
1124 | namlen = dirbuf.dotdot_namlen; | |
1125 | # endif | |
1126 | if (namlen != 2 || | |
68f21562 KM |
1127 | dirbuf.dotdot_name[0] != '.' || |
1128 | dirbuf.dotdot_name[1] != '.') { | |
362d7f3b | 1129 | ufs_dirbad(xp, (doff_t)12, |
031fd966 | 1130 | "rename: mangled dir"); |
68f21562 KM |
1131 | } else { |
1132 | dirbuf.dotdot_ino = newparent; | |
86cdabf6 | 1133 | (void) vn_rdwr(UIO_WRITE, ITOV(xp), |
68f21562 KM |
1134 | (caddr_t)&dirbuf, |
1135 | sizeof (struct dirtemplate), | |
93e273b9 | 1136 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1137 | IO_NODELOCKED|IO_SYNC, |
e6e1f8be | 1138 | tcnp->cn_cred, (int *)0, |
5b169cb7 | 1139 | (struct proc *)0); |
7188ac27 | 1140 | cache_purge(ITOV(dp)); |
68f21562 KM |
1141 | } |
1142 | } | |
4f083fd7 | 1143 | } |
e6e1f8be | 1144 | error = ufs_dirremove(fdvp, fcnp); |
7188ac27 | 1145 | if (!error) { |
68f21562 KM |
1146 | xp->i_nlink--; |
1147 | xp->i_flag |= ICHG; | |
4f083fd7 | 1148 | } |
68f21562 | 1149 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1150 | } |
4f083fd7 | 1151 | if (dp) |
7188ac27 | 1152 | vput(ITOV(dp)); |
68f21562 | 1153 | if (xp) |
7188ac27 KM |
1154 | vput(ITOV(xp)); |
1155 | vrele(ITOV(ip)); | |
1156 | return (error); | |
a5390dce | 1157 | |
4f083fd7 | 1158 | bad: |
4f083fd7 | 1159 | if (xp) |
7188ac27 KM |
1160 | vput(ITOV(xp)); |
1161 | vput(ITOV(dp)); | |
4f083fd7 SL |
1162 | out: |
1163 | ip->i_nlink--; | |
1164 | ip->i_flag |= ICHG; | |
7188ac27 KM |
1165 | vrele(ITOV(ip)); |
1166 | return (error); | |
64d3a787 | 1167 | } |
88a7a62a SL |
1168 | |
1169 | /* | |
1170 | * A virgin directory (no blushing please). | |
1171 | */ | |
031fd966 | 1172 | static struct dirtemplate mastertemplate = { |
86fb5449 KM |
1173 | 0, 12, DT_DIR, 1, ".", |
1174 | 0, DIRBLKSIZ - 12, DT_DIR, 2, ".." | |
1175 | }; | |
1176 | static struct odirtemplate omastertemplate = { | |
88a7a62a SL |
1177 | 0, 12, 1, ".", |
1178 | 0, DIRBLKSIZ - 12, 2, ".." | |
1179 | }; | |
1180 | ||
1181 | /* | |
1182 | * Mkdir system call | |
1183 | */ | |
031fd966 | 1184 | int |
e6e1f8be | 1185 | ufs_mkdir(ap) |
69021bc5 KM |
1186 | struct vop_mkdir_args /* { |
1187 | struct vnode *a_dvp; | |
1188 | struct vnode **a_vpp; | |
1189 | struct componentname *a_cnp; | |
1190 | struct vattr *a_vap; | |
1191 | } */ *ap; | |
88a7a62a | 1192 | { |
e6e1f8be KM |
1193 | register struct vnode *dvp = ap->a_dvp; |
1194 | register struct vattr *vap = ap->a_vap; | |
1195 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1196 | register struct inode *ip, *dp; |
c59af027 | 1197 | struct vnode *tvp; |
86fb5449 | 1198 | struct dirtemplate dirtemplate, *dtp; |
fa4f99ac CT |
1199 | struct timeval tv; |
1200 | int error, dmode; | |
7188ac27 | 1201 | |
38285224 | 1202 | #ifdef DIAGNOSTIC |
e6e1f8be | 1203 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
1204 | panic("ufs_mkdir: no name"); |
1205 | #endif | |
e6e1f8be | 1206 | dp = VTOI(dvp); |
38285224 | 1207 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
e6e1f8be | 1208 | free(cnp->cn_pnbuf, M_NAMEI); |
031fd966 | 1209 | ufs_iput(dp); |
986aedaa KM |
1210 | return (EMLINK); |
1211 | } | |
e6e1f8be | 1212 | dmode = vap->va_mode&0777; |
7188ac27 | 1213 | dmode |= IFDIR; |
88a7a62a | 1214 | /* |
655da945 KM |
1215 | * Must simulate part of maknode here to acquire the inode, but |
1216 | * not have it entered in the parent directory. The entry is made | |
1217 | * later after writing "." and ".." entries. | |
88a7a62a | 1218 | */ |
e6e1f8be KM |
1219 | if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp)) { |
1220 | free(cnp->cn_pnbuf, M_NAMEI); | |
031fd966 | 1221 | ufs_iput(dp); |
7188ac27 | 1222 | return (error); |
88a7a62a | 1223 | } |
c59af027 | 1224 | ip = VTOI(tvp); |
e6e1f8be | 1225 | ip->i_uid = cnp->cn_cred->cr_uid; |
4b61628b | 1226 | ip->i_gid = dp->i_gid; |
88a7a62a | 1227 | #ifdef QUOTA |
4b61628b | 1228 | if ((error = getinoquota(ip)) || |
e6e1f8be KM |
1229 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
1230 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 1231 | VOP_VFREE(tvp, ip->i_number, dmode); |
031fd966 KB |
1232 | ufs_iput(ip); |
1233 | ufs_iput(dp); | |
4b61628b KM |
1234 | return (error); |
1235 | } | |
88a7a62a SL |
1236 | #endif |
1237 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 KM |
1238 | ip->i_mode = dmode; |
1239 | ITOV(ip)->v_type = VDIR; /* Rest init'd in iget() */ | |
88a7a62a | 1240 | ip->i_nlink = 2; |
fa4f99ac CT |
1241 | tv = time; |
1242 | error = VOP_UPDATE(ITOV(ip), &tv, &tv, 1); | |
88a7a62a SL |
1243 | |
1244 | /* | |
1245 | * Bump link count in parent directory | |
1246 | * to reflect work done below. Should | |
1247 | * be done before reference is created | |
1248 | * so reparation is possible if we crash. | |
1249 | */ | |
1250 | dp->i_nlink++; | |
1251 | dp->i_flag |= ICHG; | |
fa4f99ac | 1252 | if (error = VOP_UPDATE(ITOV(dp), &tv, &tv, 1)) |
394d67a8 | 1253 | goto bad; |
88a7a62a | 1254 | |
031fd966 | 1255 | /* Initialize directory with "." and ".." from static template. */ |
86fb5449 KM |
1256 | if (dvp->v_mount->mnt_maxsymlinklen > 0) |
1257 | dtp = &mastertemplate; | |
1258 | else | |
1259 | dtp = (struct dirtemplate *)&omastertemplate; | |
1260 | dirtemplate = *dtp; | |
88a7a62a SL |
1261 | dirtemplate.dot_ino = ip->i_number; |
1262 | dirtemplate.dotdot_ino = dp->i_number; | |
86cdabf6 | 1263 | error = vn_rdwr(UIO_WRITE, ITOV(ip), (caddr_t)&dirtemplate, |
5b169cb7 | 1264 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
e6e1f8be | 1265 | IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0, (struct proc *)0); |
7188ac27 | 1266 | if (error) { |
88a7a62a SL |
1267 | dp->i_nlink--; |
1268 | dp->i_flag |= ICHG; | |
1269 | goto bad; | |
1270 | } | |
e6e1f8be | 1271 | if (DIRBLKSIZ > VFSTOUFS(dvp->v_mount)->um_mountp->mnt_stat.f_bsize) |
031fd966 KB |
1272 | panic("ufs_mkdir: blksize"); /* XXX should grow with balloc() */ |
1273 | else { | |
23de9f20 | 1274 | ip->i_size = DIRBLKSIZ; |
15365e07 KM |
1275 | ip->i_flag |= ICHG; |
1276 | } | |
031fd966 KB |
1277 | |
1278 | /* Directory set up, now install it's entry in the parent directory. */ | |
e6e1f8be | 1279 | if (error = ufs_direnter(ip, dvp, cnp)) { |
2a5d2f56 KM |
1280 | dp->i_nlink--; |
1281 | dp->i_flag |= ICHG; | |
88a7a62a SL |
1282 | } |
1283 | bad: | |
1284 | /* | |
c59af027 KM |
1285 | * No need to do an explicit VOP_TRUNCATE here, vrele will do this |
1286 | * for us because we set the link count to 0. | |
88a7a62a | 1287 | */ |
7188ac27 | 1288 | if (error) { |
88a7a62a SL |
1289 | ip->i_nlink = 0; |
1290 | ip->i_flag |= ICHG; | |
031fd966 | 1291 | ufs_iput(ip); |
cbcdacd6 | 1292 | } else |
e1b76915 | 1293 | *ap->a_vpp = ITOV(ip); |
e6e1f8be | 1294 | FREE(cnp->cn_pnbuf, M_NAMEI); |
031fd966 | 1295 | ufs_iput(dp); |
7188ac27 | 1296 | return (error); |
88a7a62a SL |
1297 | } |
1298 | ||
1299 | /* | |
1300 | * Rmdir system call. | |
1301 | */ | |
031fd966 | 1302 | int |
e6e1f8be | 1303 | ufs_rmdir(ap) |
69021bc5 | 1304 | struct vop_rmdir_args /* { |
69021bc5 KM |
1305 | struct vnode *a_dvp; |
1306 | struct vnode *a_vp; | |
1307 | struct componentname *a_cnp; | |
1308 | } */ *ap; | |
88a7a62a | 1309 | { |
e6e1f8be KM |
1310 | register struct vnode *dvp = ap->a_dvp; |
1311 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1312 | register struct inode *ip, *dp; |
031fd966 | 1313 | int error; |
7188ac27 | 1314 | |
e1b76915 | 1315 | ip = VTOI(ap->a_vp); |
e6e1f8be | 1316 | dp = VTOI(dvp); |
88a7a62a SL |
1317 | /* |
1318 | * No rmdir "." please. | |
1319 | */ | |
1320 | if (dp == ip) { | |
e6e1f8be | 1321 | vrele(dvp); |
031fd966 | 1322 | ufs_iput(ip); |
7188ac27 | 1323 | return (EINVAL); |
88a7a62a SL |
1324 | } |
1325 | /* | |
1326 | * Verify the directory is empty (and valid). | |
1327 | * (Rmdir ".." won't be valid since | |
1328 | * ".." will contain a reference to | |
1329 | * the current directory and thus be | |
1330 | * non-empty.) | |
1331 | */ | |
031fd966 KB |
1332 | error = 0; |
1333 | if (ip->i_nlink != 2 || | |
e6e1f8be | 1334 | !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) { |
7188ac27 | 1335 | error = ENOTEMPTY; |
88a7a62a SL |
1336 | goto out; |
1337 | } | |
1338 | /* | |
1339 | * Delete reference to directory before purging | |
1340 | * inode. If we crash in between, the directory | |
1341 | * will be reattached to lost+found, | |
1342 | */ | |
e6e1f8be | 1343 | if (error = ufs_dirremove(dvp, cnp)) |
88a7a62a SL |
1344 | goto out; |
1345 | dp->i_nlink--; | |
1346 | dp->i_flag |= ICHG; | |
e6e1f8be | 1347 | cache_purge(dvp); |
031fd966 | 1348 | ufs_iput(dp); |
e6e1f8be | 1349 | dvp = NULL; |
88a7a62a SL |
1350 | /* |
1351 | * Truncate inode. The only stuff left | |
1352 | * in the directory is "." and "..". The | |
1353 | * "." reference is inconsequential since | |
1354 | * we're quashing it. The ".." reference | |
1355 | * has already been adjusted above. We've | |
1356 | * removed the "." reference and the reference | |
1357 | * in the parent directory, but there may be | |
1358 | * other hard links so decrement by 2 and | |
1359 | * worry about them later. | |
1360 | */ | |
1361 | ip->i_nlink -= 2; | |
69021bc5 KM |
1362 | error = VOP_TRUNCATE(ap->a_vp, (off_t)0, IO_SYNC, cnp->cn_cred, |
1363 | cnp->cn_proc); | |
7188ac27 | 1364 | cache_purge(ITOV(ip)); |
88a7a62a | 1365 | out: |
e6e1f8be | 1366 | if (dvp) |
031fd966 KB |
1367 | ufs_iput(dp); |
1368 | ufs_iput(ip); | |
7188ac27 | 1369 | return (error); |
88a7a62a SL |
1370 | } |
1371 | ||
7188ac27 KM |
1372 | /* |
1373 | * symlink -- make a symbolic link | |
1374 | */ | |
031fd966 | 1375 | int |
e6e1f8be | 1376 | ufs_symlink(ap) |
69021bc5 KM |
1377 | struct vop_symlink_args /* { |
1378 | struct vnode *a_dvp; | |
1379 | struct vnode **a_vpp; | |
1380 | struct componentname *a_cnp; | |
1381 | struct vattr *a_vap; | |
1382 | char *a_target; | |
1383 | } */ *ap; | |
7188ac27 | 1384 | { |
2a7acb0a KM |
1385 | register struct vnode *vp, **vpp = ap->a_vpp; |
1386 | register struct inode *ip; | |
1387 | int len, error; | |
7188ac27 | 1388 | |
e6e1f8be KM |
1389 | if (error = ufs_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp, |
1390 | vpp, ap->a_cnp)) | |
7188ac27 | 1391 | return (error); |
2a7acb0a KM |
1392 | vp = *vpp; |
1393 | len = strlen(ap->a_target); | |
1394 | if (len < vp->v_mount->mnt_maxsymlinklen) { | |
1395 | ip = VTOI(vp); | |
1396 | bcopy(ap->a_target, (char *)ip->i_shortlink, len); | |
1397 | ip->i_size = len; | |
1398 | ip->i_flag |= IUPD|ICHG; | |
1399 | } else | |
1400 | error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, | |
1401 | UIO_SYSSPACE, IO_NODELOCKED, ap->a_cnp->cn_cred, (int *)0, | |
1402 | (struct proc *)0); | |
1403 | vput(vp); | |
7188ac27 KM |
1404 | return (error); |
1405 | } | |
1406 | ||
1407 | /* | |
d8ba9f9d KM |
1408 | * Vnode op for reading directories. |
1409 | * | |
1410 | * The routine below assumes that the on-disk format of a directory | |
1411 | * is the same as that defined by <sys/dirent.h>. If the on-disk | |
1412 | * format changes, then it will be necessary to do a conversion | |
1413 | * from the on-disk format that read returns to the format defined | |
1414 | * by <sys/dirent.h>. | |
7188ac27 | 1415 | */ |
031fd966 | 1416 | int |
e6e1f8be | 1417 | ufs_readdir(ap) |
69021bc5 KM |
1418 | struct vop_readdir_args /* { |
1419 | struct vnode *a_vp; | |
1420 | struct uio *a_uio; | |
1421 | struct ucred *a_cred; | |
1422 | } */ *ap; | |
88a7a62a | 1423 | { |
e6e1f8be | 1424 | register struct uio *uio = ap->a_uio; |
86cdabf6 | 1425 | int count, lost, error; |
88a7a62a | 1426 | |
e6e1f8be | 1427 | count = uio->uio_resid; |
7188ac27 | 1428 | count &= ~(DIRBLKSIZ - 1); |
e6e1f8be KM |
1429 | lost = uio->uio_resid - count; |
1430 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1431 | return (EINVAL); |
e6e1f8be KM |
1432 | uio->uio_resid = count; |
1433 | uio->uio_iov->iov_len = count; | |
86fb5449 KM |
1434 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1435 | if (ap->a_vp->v_mount->mnt_maxsymlinklen > 0) { | |
1436 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1437 | } else { | |
1438 | struct dirent *dp, *edp; | |
1439 | struct uio auio; | |
1440 | struct iovec aiov; | |
1441 | caddr_t dirbuf; | |
1442 | int readcnt; | |
1443 | u_char tmp; | |
1444 | ||
1445 | auio = *uio; | |
1446 | auio.uio_iov = &aiov; | |
1447 | auio.uio_iovcnt = 1; | |
1448 | auio.uio_segflg = UIO_SYSSPACE; | |
1449 | aiov.iov_len = count; | |
1450 | MALLOC(dirbuf, caddr_t, count, M_TEMP, M_WAITOK); | |
1451 | aiov.iov_base = dirbuf; | |
1452 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1453 | if (error == 0) { | |
1454 | readcnt = count - auio.uio_resid; | |
1455 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1456 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
1457 | tmp = dp->d_namlen; | |
1458 | dp->d_namlen = dp->d_type; | |
1459 | dp->d_type = tmp; | |
1460 | if (dp->d_reclen > 0) { | |
1461 | dp = (struct dirent *) | |
1462 | ((char *)dp + dp->d_reclen); | |
1463 | } else { | |
1464 | error = EIO; | |
1465 | break; | |
1466 | } | |
1467 | } | |
1468 | if (dp >= edp) | |
1469 | error = uiomove(dirbuf, readcnt, uio); | |
1470 | } | |
1471 | FREE(dirbuf, M_TEMP); | |
1472 | } | |
1473 | # else | |
1474 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1475 | # endif | |
e6e1f8be | 1476 | uio->uio_resid += lost; |
7188ac27 KM |
1477 | return (error); |
1478 | } | |
1479 | ||
1480 | /* | |
1481 | * Return target name of a symbolic link | |
1482 | */ | |
031fd966 | 1483 | int |
e6e1f8be | 1484 | ufs_readlink(ap) |
69021bc5 KM |
1485 | struct vop_readlink_args /* { |
1486 | struct vnode *a_vp; | |
1487 | struct uio *a_uio; | |
1488 | struct ucred *a_cred; | |
1489 | } */ *ap; | |
7188ac27 | 1490 | { |
2a7acb0a KM |
1491 | register struct vnode *vp = ap->a_vp; |
1492 | register struct inode *ip = VTOI(vp); | |
7188ac27 | 1493 | |
2a7acb0a KM |
1494 | if (ip->i_size < vp->v_mount->mnt_maxsymlinklen) { |
1495 | uiomove((char *)ip->i_shortlink, (int)ip->i_size, ap->a_uio); | |
1496 | return (0); | |
1497 | } | |
1498 | return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); | |
7188ac27 KM |
1499 | } |
1500 | ||
1501 | /* | |
1502 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
655da945 | 1503 | * done. If a buffer has been saved in anticipation of a CREATE, delete it. |
7188ac27 | 1504 | */ |
66955caf | 1505 | /* ARGSUSED */ |
031fd966 | 1506 | int |
e6e1f8be | 1507 | ufs_abortop(ap) |
69021bc5 KM |
1508 | struct vop_abortop_args /* { |
1509 | struct vnode *a_dvp; | |
1510 | struct componentname *a_cnp; | |
1511 | } */ *ap; | |
7188ac27 | 1512 | { |
e1b76915 JH |
1513 | if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) |
1514 | FREE(ap->a_cnp->cn_pnbuf, M_NAMEI); | |
66955caf | 1515 | return (0); |
7188ac27 KM |
1516 | } |
1517 | ||
1c3ebc10 KM |
1518 | /* |
1519 | * Lock an inode. | |
1520 | */ | |
031fd966 | 1521 | int |
e6e1f8be | 1522 | ufs_lock(ap) |
69021bc5 KM |
1523 | struct vop_lock_args /* { |
1524 | struct vnode *a_vp; | |
1525 | } */ *ap; | |
7188ac27 | 1526 | { |
e1b76915 | 1527 | register struct inode *ip = VTOI(ap->a_vp); |
7188ac27 KM |
1528 | |
1529 | ILOCK(ip); | |
1530 | return (0); | |
1531 | } | |
1532 | ||
1c3ebc10 KM |
1533 | /* |
1534 | * Unlock an inode. | |
1535 | */ | |
031fd966 | 1536 | int |
e6e1f8be | 1537 | ufs_unlock(ap) |
69021bc5 KM |
1538 | struct vop_unlock_args /* { |
1539 | struct vnode *a_vp; | |
1540 | } */ *ap; | |
7188ac27 | 1541 | { |
e1b76915 | 1542 | register struct inode *ip = VTOI(ap->a_vp); |
7188ac27 KM |
1543 | |
1544 | if (!(ip->i_flag & ILOCKED)) | |
1545 | panic("ufs_unlock NOT LOCKED"); | |
1546 | IUNLOCK(ip); | |
1547 | return (0); | |
1548 | } | |
1549 | ||
1c3ebc10 KM |
1550 | /* |
1551 | * Check for a locked inode. | |
1552 | */ | |
031fd966 | 1553 | int |
e6e1f8be | 1554 | ufs_islocked(ap) |
69021bc5 KM |
1555 | struct vop_islocked_args /* { |
1556 | struct vnode *a_vp; | |
1557 | } */ *ap; | |
1c3ebc10 KM |
1558 | { |
1559 | ||
e1b76915 | 1560 | if (VTOI(ap->a_vp)->i_flag & ILOCKED) |
1c3ebc10 KM |
1561 | return (1); |
1562 | return (0); | |
1563 | } | |
1564 | ||
88a7a62a | 1565 | /* |
4f1ff475 KM |
1566 | * Calculate the logical to physical mapping if not done already, |
1567 | * then call the device strategy routine. | |
88a7a62a | 1568 | */ |
031fd966 | 1569 | int |
e6e1f8be | 1570 | ufs_strategy(ap) |
69021bc5 KM |
1571 | struct vop_strategy_args /* { |
1572 | struct buf *a_bp; | |
1573 | } */ *ap; | |
88a7a62a | 1574 | { |
e6e1f8be KM |
1575 | register struct buf *bp = ap->a_bp; |
1576 | register struct vnode *vp = bp->b_vp; | |
031fd966 | 1577 | register struct inode *ip; |
e16fa59e KM |
1578 | int error; |
1579 | ||
e6e1f8be KM |
1580 | ip = VTOI(vp); |
1581 | if (vp->v_type == VBLK || vp->v_type == VCHR) | |
e16fa59e | 1582 | panic("ufs_strategy: spec"); |
e6e1f8be | 1583 | if (bp->b_blkno == bp->b_lblkno) { |
c59af027 | 1584 | if (error = |
e6e1f8be KM |
1585 | VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno)) { |
1586 | bp->b_error = error; | |
1587 | bp->b_flags |= B_ERROR; | |
1588 | biodone(bp); | |
e16fa59e | 1589 | return (error); |
dd1d1daf | 1590 | } |
e6e1f8be KM |
1591 | if ((long)bp->b_blkno == -1) |
1592 | clrbuf(bp); | |
e16fa59e | 1593 | } |
e6e1f8be KM |
1594 | if ((long)bp->b_blkno == -1) { |
1595 | biodone(bp); | |
e16fa59e | 1596 | return (0); |
20aa076b | 1597 | } |
e16fa59e | 1598 | vp = ip->i_devvp; |
e6e1f8be | 1599 | bp->b_dev = vp->v_rdev; |
ea460dfe | 1600 | VOCALL (vp->v_op, VOFFSET(vop_strategy), ap); |
7188ac27 KM |
1601 | return (0); |
1602 | } | |
88a7a62a | 1603 | |
e16fa59e KM |
1604 | /* |
1605 | * Print out the contents of an inode. | |
1606 | */ | |
031fd966 | 1607 | int |
e6e1f8be | 1608 | ufs_print(ap) |
69021bc5 KM |
1609 | struct vop_print_args /* { |
1610 | struct vnode *a_vp; | |
1611 | } */ *ap; | |
e16fa59e | 1612 | { |
e6e1f8be KM |
1613 | register struct vnode *vp = ap->a_vp; |
1614 | register struct inode *ip = VTOI(vp); | |
e16fa59e | 1615 | |
a8f829ed KM |
1616 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1617 | major(ip->i_dev), minor(ip->i_dev)); | |
1618 | #ifdef FIFO | |
e6e1f8be KM |
1619 | if (vp->v_type == VFIFO) |
1620 | fifo_printinfo(vp); | |
a8f829ed KM |
1621 | #endif /* FIFO */ |
1622 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
4a8fb1bb | 1623 | if (ip->i_lockholder == 0) |
031fd966 | 1624 | return (0); |
4a8fb1bb KM |
1625 | printf("\towner pid %d", ip->i_lockholder); |
1626 | if (ip->i_lockwaiter) | |
1627 | printf(" waiting pid %d", ip->i_lockwaiter); | |
96bae3e0 | 1628 | printf("\n"); |
031fd966 | 1629 | return (0); |
e16fa59e KM |
1630 | } |
1631 | ||
24a31b70 KM |
1632 | /* |
1633 | * Read wrapper for special devices. | |
1634 | */ | |
031fd966 | 1635 | int |
e6e1f8be | 1636 | ufsspec_read(ap) |
69021bc5 KM |
1637 | struct vop_read_args /* { |
1638 | struct vnode *a_vp; | |
1639 | struct uio *a_uio; | |
1640 | int a_ioflag; | |
1641 | struct ucred *a_cred; | |
1642 | } */ *ap; | |
24a31b70 | 1643 | { |
ea460dfe | 1644 | extern int (**spec_vnodeop_p)(); |
24a31b70 KM |
1645 | |
1646 | /* | |
1647 | * Set access flag. | |
1648 | */ | |
e1b76915 | 1649 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1650 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap)); |
24a31b70 KM |
1651 | } |
1652 | ||
1653 | /* | |
1654 | * Write wrapper for special devices. | |
1655 | */ | |
031fd966 | 1656 | int |
e6e1f8be | 1657 | ufsspec_write(ap) |
69021bc5 KM |
1658 | struct vop_write_args /* { |
1659 | struct vnode *a_vp; | |
1660 | struct uio *a_uio; | |
1661 | int a_ioflag; | |
1662 | struct ucred *a_cred; | |
1663 | } */ *ap; | |
24a31b70 | 1664 | { |
ea460dfe | 1665 | extern int (**spec_vnodeop_p)(); |
24a31b70 KM |
1666 | |
1667 | /* | |
1668 | * Set update and change flags. | |
1669 | */ | |
e1b76915 | 1670 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1671 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap)); |
24a31b70 KM |
1672 | } |
1673 | ||
1674 | /* | |
1675 | * Close wrapper for special devices. | |
1676 | * | |
1677 | * Update the times on the inode then do device close. | |
1678 | */ | |
031fd966 | 1679 | int |
e6e1f8be | 1680 | ufsspec_close(ap) |
69021bc5 KM |
1681 | struct vop_close_args /* { |
1682 | struct vnode *a_vp; | |
1683 | int a_fflag; | |
1684 | struct ucred *a_cred; | |
1685 | struct proc *a_p; | |
1686 | } */ *ap; | |
24a31b70 | 1687 | { |
ea460dfe | 1688 | extern int (**spec_vnodeop_p)(); |
e1b76915 | 1689 | register struct inode *ip = VTOI(ap->a_vp); |
24a31b70 | 1690 | |
e1b76915 | 1691 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 | 1692 | ITIMES(ip, &time, &time); |
ea460dfe | 1693 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); |
24a31b70 KM |
1694 | } |
1695 | ||
d1c43d7f KM |
1696 | #ifdef FIFO |
1697 | /* | |
1698 | * Read wrapper for fifo's | |
1699 | */ | |
031fd966 | 1700 | int |
e6e1f8be | 1701 | ufsfifo_read(ap) |
69021bc5 KM |
1702 | struct vop_read_args /* { |
1703 | struct vnode *a_vp; | |
1704 | struct uio *a_uio; | |
1705 | int a_ioflag; | |
1706 | struct ucred *a_cred; | |
1707 | } */ *ap; | |
d1c43d7f | 1708 | { |
ea460dfe | 1709 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1710 | |
1711 | /* | |
1712 | * Set access flag. | |
1713 | */ | |
e1b76915 | 1714 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1715 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap)); |
d1c43d7f KM |
1716 | } |
1717 | ||
1718 | /* | |
1719 | * Write wrapper for fifo's. | |
1720 | */ | |
031fd966 | 1721 | int |
e6e1f8be | 1722 | ufsfifo_write(ap) |
69021bc5 KM |
1723 | struct vop_write_args /* { |
1724 | struct vnode *a_vp; | |
1725 | struct uio *a_uio; | |
1726 | int a_ioflag; | |
1727 | struct ucred *a_cred; | |
1728 | } */ *ap; | |
d1c43d7f | 1729 | { |
ea460dfe | 1730 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1731 | |
1732 | /* | |
1733 | * Set update and change flags. | |
1734 | */ | |
e1b76915 | 1735 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1736 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap)); |
d1c43d7f KM |
1737 | } |
1738 | ||
1739 | /* | |
1740 | * Close wrapper for fifo's. | |
1741 | * | |
1742 | * Update the times on the inode then do device close. | |
1743 | */ | |
e6e1f8be | 1744 | ufsfifo_close(ap) |
69021bc5 KM |
1745 | struct vop_close_args /* { |
1746 | struct vnode *a_vp; | |
1747 | int a_fflag; | |
1748 | struct ucred *a_cred; | |
1749 | struct proc *a_p; | |
1750 | } */ *ap; | |
d1c43d7f | 1751 | { |
ea460dfe | 1752 | extern int (**fifo_vnodeop_p)(); |
e1b76915 | 1753 | register struct inode *ip = VTOI(ap->a_vp); |
d1c43d7f | 1754 | |
e1b76915 | 1755 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
d1c43d7f | 1756 | ITIMES(ip, &time, &time); |
ea460dfe | 1757 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); |
d1c43d7f KM |
1758 | } |
1759 | #endif /* FIFO */ | |
1760 | ||
0b0bf936 KM |
1761 | /* |
1762 | * Advisory record locking support | |
1763 | */ | |
031fd966 | 1764 | int |
e6e1f8be | 1765 | ufs_advlock(ap) |
69021bc5 KM |
1766 | struct vop_advlock_args /* { |
1767 | struct vnode *a_vp; | |
1768 | caddr_t a_id; | |
1769 | int a_op; | |
1770 | struct flock *a_fl; | |
1771 | int a_flags; | |
1772 | } */ *ap; | |
0b0bf936 | 1773 | { |
e1b76915 | 1774 | register struct inode *ip = VTOI(ap->a_vp); |
e6e1f8be | 1775 | register struct flock *fl = ap->a_fl; |
0b0bf936 KM |
1776 | register struct lockf *lock; |
1777 | off_t start, end; | |
1778 | int error; | |
1779 | ||
1780 | /* | |
1781 | * Avoid the common case of unlocking when inode has no locks. | |
1782 | */ | |
1783 | if (ip->i_lockf == (struct lockf *)0) { | |
e1b76915 | 1784 | if (ap->a_op != F_SETLK) { |
e6e1f8be | 1785 | fl->l_type = F_UNLCK; |
0b0bf936 KM |
1786 | return (0); |
1787 | } | |
1788 | } | |
1789 | /* | |
1790 | * Convert the flock structure into a start and end. | |
1791 | */ | |
e6e1f8be | 1792 | switch (fl->l_whence) { |
0b0bf936 KM |
1793 | |
1794 | case SEEK_SET: | |
1795 | case SEEK_CUR: | |
1796 | /* | |
1797 | * Caller is responsible for adding any necessary offset | |
1798 | * when SEEK_CUR is used. | |
1799 | */ | |
e6e1f8be | 1800 | start = fl->l_start; |
0b0bf936 KM |
1801 | break; |
1802 | ||
1803 | case SEEK_END: | |
e6e1f8be | 1804 | start = ip->i_size + fl->l_start; |
0b0bf936 KM |
1805 | break; |
1806 | ||
1807 | default: | |
1808 | return (EINVAL); | |
1809 | } | |
1810 | if (start < 0) | |
1811 | return (EINVAL); | |
e6e1f8be | 1812 | if (fl->l_len == 0) |
0b0bf936 KM |
1813 | end = -1; |
1814 | else | |
e6e1f8be | 1815 | end = start + fl->l_len - 1; |
0b0bf936 KM |
1816 | /* |
1817 | * Create the lockf structure | |
1818 | */ | |
1819 | MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK); | |
1820 | lock->lf_start = start; | |
1821 | lock->lf_end = end; | |
e1b76915 | 1822 | lock->lf_id = ap->a_id; |
0b0bf936 | 1823 | lock->lf_inode = ip; |
e6e1f8be | 1824 | lock->lf_type = fl->l_type; |
0b0bf936 KM |
1825 | lock->lf_next = (struct lockf *)0; |
1826 | lock->lf_block = (struct lockf *)0; | |
e1b76915 | 1827 | lock->lf_flags = ap->a_flags; |
0b0bf936 KM |
1828 | /* |
1829 | * Do the requested operation. | |
1830 | */ | |
e1b76915 | 1831 | switch(ap->a_op) { |
0b0bf936 | 1832 | case F_SETLK: |
b9fc1077 | 1833 | return (lf_setlock(lock)); |
0b0bf936 KM |
1834 | |
1835 | case F_UNLCK: | |
b9fc1077 KM |
1836 | error = lf_clearlock(lock); |
1837 | FREE(lock, M_LOCKF); | |
1838 | return (error); | |
0b0bf936 KM |
1839 | |
1840 | case F_GETLK: | |
e6e1f8be | 1841 | error = lf_getlock(lock, fl); |
b9fc1077 KM |
1842 | FREE(lock, M_LOCKF); |
1843 | return (error); | |
0b0bf936 KM |
1844 | |
1845 | default: | |
1846 | free(lock, M_LOCKF); | |
1847 | return (EINVAL); | |
1848 | } | |
1849 | /* NOTREACHED */ | |
1850 | } | |
5b169cb7 KM |
1851 | |
1852 | /* | |
031fd966 KB |
1853 | * Initialize the vnode associated with a new inode, handle aliased |
1854 | * vnodes. | |
5b169cb7 | 1855 | */ |
031fd966 | 1856 | int |
c59af027 | 1857 | ufs_vinit(mntp, specops, fifoops, vpp) |
031fd966 | 1858 | struct mount *mntp; |
1d52469b JH |
1859 | int (**specops)(); |
1860 | int (**fifoops)(); | |
031fd966 KB |
1861 | struct vnode **vpp; |
1862 | { | |
1863 | struct inode *ip, *nip; | |
1864 | struct vnode *vp, *nvp; | |
9342689a | 1865 | extern int (**spec_vnodeop_p)(); |
031fd966 KB |
1866 | |
1867 | vp = *vpp; | |
1868 | ip = VTOI(vp); | |
1869 | switch(vp->v_type = IFTOVT(ip->i_mode)) { | |
1870 | case VCHR: | |
1871 | case VBLK: | |
c59af027 | 1872 | vp->v_op = specops; |
031fd966 | 1873 | if (nvp = checkalias(vp, ip->i_rdev, mntp)) { |
c59af027 | 1874 | /* |
4a8fb1bb | 1875 | * Discard unneeded vnode, but save its inode. |
c59af027 | 1876 | */ |
4a8fb1bb KM |
1877 | remque(ip); |
1878 | IUNLOCK(ip); | |
1879 | nvp->v_data = vp->v_data; | |
1880 | vp->v_data = NULL; | |
9342689a | 1881 | vp->v_op = spec_vnodeop_p; |
4a8fb1bb KM |
1882 | vrele(vp); |
1883 | vgone(vp); | |
c59af027 | 1884 | /* |
4a8fb1bb | 1885 | * Reinitialize aliased inode. |
c59af027 | 1886 | */ |
4a8fb1bb KM |
1887 | vp = nvp; |
1888 | ip->i_vnode = vp; | |
1889 | ufs_ihashins(ip); | |
031fd966 KB |
1890 | } |
1891 | break; | |
1892 | case VFIFO: | |
1893 | #ifdef FIFO | |
c59af027 | 1894 | vp->v_op = fifoops; |
031fd966 KB |
1895 | break; |
1896 | #else | |
1897 | return (EOPNOTSUPP); | |
1898 | #endif | |
1899 | } | |
031fd966 KB |
1900 | if (ip->i_number == ROOTINO) |
1901 | vp->v_flag |= VROOT; | |
1a3cb193 KM |
1902 | /* |
1903 | * Initialize modrev times | |
1904 | */ | |
1905 | SETHIGH(ip->i_modrev, mono_time.tv_sec); | |
1906 | SETLOW(ip->i_modrev, mono_time.tv_usec * 4294); | |
031fd966 KB |
1907 | *vpp = vp; |
1908 | return (0); | |
1909 | } | |
5b169cb7 | 1910 | |
031fd966 KB |
1911 | /* |
1912 | * Allocate a new inode. | |
1913 | */ | |
1914 | int | |
6e57e9ff | 1915 | ufs_makeinode(mode, dvp, vpp, cnp) |
031fd966 | 1916 | int mode; |
cfef4373 | 1917 | struct vnode *dvp; |
c59af027 | 1918 | struct vnode **vpp; |
cfef4373 | 1919 | struct componentname *cnp; |
031fd966 KB |
1920 | { |
1921 | register struct inode *ip, *pdir; | |
fa4f99ac | 1922 | struct timeval tv; |
c59af027 | 1923 | struct vnode *tvp; |
031fd966 KB |
1924 | int error; |
1925 | ||
cfef4373 | 1926 | pdir = VTOI(dvp); |
38285224 | 1927 | #ifdef DIAGNOSTIC |
cfef4373 | 1928 | if ((cnp->cn_flags & HASBUF) == 0) |
031fd966 KB |
1929 | panic("ufs_makeinode: no name"); |
1930 | #endif | |
c59af027 | 1931 | *vpp = NULL; |
031fd966 KB |
1932 | if ((mode & IFMT) == 0) |
1933 | mode |= IFREG; | |
1934 | ||
cfef4373 JH |
1935 | if (error = VOP_VALLOC(dvp, mode, cnp->cn_cred, &tvp)) { |
1936 | free(cnp->cn_pnbuf, M_NAMEI); | |
031fd966 KB |
1937 | ufs_iput(pdir); |
1938 | return (error); | |
1939 | } | |
c59af027 | 1940 | ip = VTOI(tvp); |
cfef4373 | 1941 | ip->i_uid = cnp->cn_cred->cr_uid; |
031fd966 KB |
1942 | ip->i_gid = pdir->i_gid; |
1943 | #ifdef QUOTA | |
1944 | if ((error = getinoquota(ip)) || | |
cfef4373 JH |
1945 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
1946 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 1947 | VOP_VFREE(tvp, ip->i_number, mode); |
031fd966 KB |
1948 | ufs_iput(ip); |
1949 | ufs_iput(pdir); | |
1950 | return (error); | |
1951 | } | |
1952 | #endif | |
1953 | ip->i_flag |= IACC|IUPD|ICHG; | |
1954 | ip->i_mode = mode; | |
c59af027 | 1955 | tvp->v_type = IFTOVT(mode); /* Rest init'd in iget() */ |
031fd966 | 1956 | ip->i_nlink = 1; |
cfef4373 JH |
1957 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) && |
1958 | suser(cnp->cn_cred, NULL)) | |
031fd966 KB |
1959 | ip->i_mode &= ~ISGID; |
1960 | ||
1961 | /* | |
1962 | * Make sure inode goes to disk before directory entry. | |
1963 | */ | |
fa4f99ac CT |
1964 | tv = time; |
1965 | if (error = VOP_UPDATE(tvp, &tv, &tv, 1)) | |
031fd966 | 1966 | goto bad; |
cfef4373 | 1967 | if (error = ufs_direnter(ip, dvp, cnp)) |
031fd966 | 1968 | goto bad; |
cfef4373 JH |
1969 | if ((cnp->cn_flags & SAVESTART) == 0) |
1970 | FREE(cnp->cn_pnbuf, M_NAMEI); | |
031fd966 | 1971 | ufs_iput(pdir); |
c59af027 | 1972 | *vpp = tvp; |
031fd966 KB |
1973 | return (0); |
1974 | ||
1975 | bad: | |
1976 | /* | |
1977 | * Write error occurred trying to update the inode | |
1978 | * or the directory so must deallocate the inode. | |
1979 | */ | |
cfef4373 | 1980 | free(cnp->cn_pnbuf, M_NAMEI); |
031fd966 KB |
1981 | ufs_iput(pdir); |
1982 | ip->i_nlink = 0; | |
1983 | ip->i_flag |= ICHG; | |
1984 | ufs_iput(ip); | |
1985 | return (error); | |
1986 | } |