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 | * |
4784d59e | 7 | * @(#)ufs_vnops.c 7.113 (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 | |
4784d59e KM |
137 | /* |
138 | * Files marked append-only must be opened for appending. | |
139 | */ | |
140 | if ((VTOI(ap->a_vp)->i_flags & APPEND) && | |
141 | (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) | |
142 | return (EPERM); | |
7188ac27 | 143 | return (0); |
3e78e260 BJ |
144 | } |
145 | ||
146 | /* | |
7188ac27 KM |
147 | * Close called |
148 | * | |
149 | * Update the times on the inode. | |
3e78e260 | 150 | */ |
7188ac27 | 151 | /* ARGSUSED */ |
031fd966 | 152 | int |
e6e1f8be | 153 | ufs_close(ap) |
69021bc5 KM |
154 | struct vop_close_args /* { |
155 | struct vnode *a_vp; | |
156 | int a_fflag; | |
157 | struct ucred *a_cred; | |
158 | struct proc *a_p; | |
159 | } */ *ap; | |
3e78e260 | 160 | { |
e6e1f8be KM |
161 | register struct vnode *vp = ap->a_vp; |
162 | register struct inode *ip = VTOI(vp); | |
3e78e260 | 163 | |
e6e1f8be | 164 | if (vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
7188ac27 KM |
165 | ITIMES(ip, &time, &time); |
166 | return (0); | |
3e78e260 BJ |
167 | } |
168 | ||
4b61628b KM |
169 | /* |
170 | * Check mode permission on inode pointer. Mode is READ, WRITE or EXEC. | |
171 | * The mode is shifted to select the owner/group/other fields. The | |
172 | * super user is granted all permissions. | |
173 | */ | |
031fd966 | 174 | int |
e6e1f8be | 175 | ufs_access(ap) |
69021bc5 KM |
176 | struct vop_access_args /* { |
177 | struct vnode *a_vp; | |
178 | int a_mode; | |
179 | struct ucred *a_cred; | |
180 | struct proc *a_p; | |
181 | } */ *ap; | |
3e78e260 | 182 | { |
e6e1f8be KM |
183 | register struct vnode *vp = ap->a_vp; |
184 | register struct inode *ip = VTOI(vp); | |
185 | register struct ucred *cred = ap->a_cred; | |
186 | mode_t mode = ap->a_mode; | |
4b61628b KM |
187 | register gid_t *gp; |
188 | int i, error; | |
3e78e260 | 189 | |
4b61628b | 190 | #ifdef DIAGNOSTIC |
e6e1f8be KM |
191 | if (!VOP_ISLOCKED(vp)) { |
192 | vprint("ufs_access: not locked", vp); | |
4b61628b KM |
193 | panic("ufs_access: not locked"); |
194 | } | |
195 | #endif | |
196 | #ifdef QUOTA | |
e6e1f8be KM |
197 | if (mode & VWRITE) { |
198 | switch (vp->v_type) { | |
4b61628b KM |
199 | case VREG: case VDIR: case VLNK: |
200 | if (error = getinoquota(ip)) | |
201 | return (error); | |
202 | } | |
203 | } | |
204 | #endif /* QUOTA */ | |
4784d59e KM |
205 | if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE)) |
206 | return (EPERM); | |
4b61628b KM |
207 | /* |
208 | * If you're the super-user, you always get access. | |
209 | */ | |
e6e1f8be | 210 | if (cred->cr_uid == 0) |
4b61628b KM |
211 | return (0); |
212 | /* | |
213 | * Access check is based on only one of owner, group, public. | |
214 | * If not owner, then check group. If not a member of the | |
215 | * group, then check public access. | |
216 | */ | |
e6e1f8be KM |
217 | if (cred->cr_uid != ip->i_uid) { |
218 | mode >>= 3; | |
219 | gp = cred->cr_groups; | |
220 | for (i = 0; i < cred->cr_ngroups; i++, gp++) | |
4b61628b KM |
221 | if (ip->i_gid == *gp) |
222 | goto found; | |
e6e1f8be | 223 | mode >>= 3; |
4b61628b KM |
224 | found: |
225 | ; | |
226 | } | |
06ca211c | 227 | return ((ip->i_mode & mode) == mode ? 0 : EACCES); |
3e78e260 BJ |
228 | } |
229 | ||
7188ac27 | 230 | /* ARGSUSED */ |
031fd966 | 231 | int |
e6e1f8be | 232 | ufs_getattr(ap) |
69021bc5 KM |
233 | struct vop_getattr_args /* { |
234 | struct vnode *a_vp; | |
235 | struct vattr *a_vap; | |
236 | struct ucred *a_cred; | |
237 | struct proc *a_p; | |
238 | } */ *ap; | |
3e78e260 | 239 | { |
e6e1f8be KM |
240 | register struct vnode *vp = ap->a_vp; |
241 | register struct inode *ip = VTOI(vp); | |
242 | register struct vattr *vap = ap->a_vap; | |
3e78e260 | 243 | |
7188ac27 | 244 | ITIMES(ip, &time, &time); |
3e78e260 | 245 | /* |
7188ac27 | 246 | * Copy from inode table |
3e78e260 | 247 | */ |
e6e1f8be KM |
248 | vap->va_fsid = ip->i_dev; |
249 | vap->va_fileid = ip->i_number; | |
250 | vap->va_mode = ip->i_mode & ~IFMT; | |
251 | vap->va_nlink = ip->i_nlink; | |
252 | vap->va_uid = ip->i_uid; | |
253 | vap->va_gid = ip->i_gid; | |
254 | vap->va_rdev = (dev_t)ip->i_rdev; | |
d9011ad6 | 255 | vap->va_size = ip->i_din.di_size; |
e6e1f8be KM |
256 | vap->va_atime = ip->i_atime; |
257 | vap->va_mtime = ip->i_mtime; | |
258 | vap->va_ctime = ip->i_ctime; | |
259 | vap->va_flags = ip->i_flags; | |
260 | vap->va_gen = ip->i_gen; | |
7188ac27 | 261 | /* this doesn't belong here */ |
e6e1f8be KM |
262 | if (vp->v_type == VBLK) |
263 | vap->va_blocksize = BLKDEV_IOSIZE; | |
264 | else if (vp->v_type == VCHR) | |
265 | vap->va_blocksize = MAXBSIZE; | |
8eee8525 | 266 | else |
e6e1f8be KM |
267 | vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; |
268 | vap->va_bytes = dbtob(ip->i_blocks); | |
e6e1f8be KM |
269 | vap->va_type = vp->v_type; |
270 | vap->va_filerev = ip->i_modrev; | |
7188ac27 | 271 | return (0); |
3e78e260 BJ |
272 | } |
273 | ||
274 | /* | |
7188ac27 | 275 | * Set attribute vnode op. called from several syscalls |
3e78e260 | 276 | */ |
031fd966 | 277 | int |
e6e1f8be | 278 | ufs_setattr(ap) |
69021bc5 KM |
279 | struct vop_setattr_args /* { |
280 | struct vnode *a_vp; | |
281 | struct vattr *a_vap; | |
282 | struct ucred *a_cred; | |
283 | struct proc *a_p; | |
284 | } */ *ap; | |
3e78e260 | 285 | { |
e6e1f8be KM |
286 | register struct vattr *vap = ap->a_vap; |
287 | register struct vnode *vp = ap->a_vp; | |
288 | register struct inode *ip = VTOI(vp); | |
289 | register struct ucred *cred = ap->a_cred; | |
290 | register struct proc *p = ap->a_p; | |
7e11a0c9 | 291 | struct timeval atimeval, mtimeval; |
031fd966 | 292 | int error; |
b4d1aee9 | 293 | |
7188ac27 | 294 | /* |
031fd966 | 295 | * Check for unsettable attributes. |
7188ac27 | 296 | */ |
e6e1f8be KM |
297 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) || |
298 | (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) || | |
299 | (vap->va_blocksize != VNOVAL) || (vap->va_rdev != VNOVAL) || | |
300 | ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) { | |
7188ac27 | 301 | return (EINVAL); |
b4d1aee9 | 302 | } |
4784d59e KM |
303 | if (vap->va_flags != VNOVAL) { |
304 | if (cred->cr_uid != ip->i_uid && | |
305 | (error = suser(cred, &p->p_acflag))) | |
306 | return (error); | |
307 | if (cred->cr_uid == 0) { | |
308 | if ((ip->i_flags & (SYS_IMMUTABLE | SYS_APPEND)) && | |
309 | securelevel > 0) | |
310 | return (EPERM); | |
311 | ip->i_flags = vap->va_flags; | |
312 | } else { | |
313 | if (ip->i_flags & (SYS_IMMUTABLE | SYS_APPEND)) | |
314 | return (EPERM); | |
315 | ip->i_flags &= 0xffff0000; | |
316 | ip->i_flags |= (vap->va_flags & 0xffff); | |
317 | } | |
318 | ip->i_flag |= ICHG; | |
319 | if (vap->va_flags & (IMMUTABLE | APPEND)) | |
320 | return (0); | |
321 | } | |
322 | if (ip->i_flags & (IMMUTABLE | APPEND)) | |
323 | return (EPERM); | |
7188ac27 KM |
324 | /* |
325 | * Go through the fields and update iff not VNOVAL. | |
326 | */ | |
e6e1f8be KM |
327 | if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) |
328 | if (error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred, p)) | |
7188ac27 | 329 | return (error); |
e6e1f8be KM |
330 | if (vap->va_size != VNOVAL) { |
331 | if (vp->v_type == VDIR) | |
7188ac27 | 332 | return (EISDIR); |
69021bc5 | 333 | if (error = VOP_TRUNCATE(vp, vap->va_size, 0, cred, p)) |
7188ac27 | 334 | return (error); |
3e78e260 | 335 | } |
e6e1f8be | 336 | ip = VTOI(vp); |
7e11a0c9 | 337 | if (vap->va_atime.ts_sec != VNOVAL || vap->va_mtime.ts_sec != VNOVAL) { |
e6e1f8be KM |
338 | if (cred->cr_uid != ip->i_uid && |
339 | (error = suser(cred, &p->p_acflag))) | |
de412887 | 340 | return (error); |
7e11a0c9 | 341 | if (vap->va_atime.ts_sec != VNOVAL) |
7188ac27 | 342 | ip->i_flag |= IACC; |
7e11a0c9 | 343 | if (vap->va_mtime.ts_sec != VNOVAL) |
2ee0b0d9 | 344 | ip->i_flag |= IUPD | ICHG; |
7e11a0c9 KM |
345 | atimeval.tv_sec = vap->va_atime.ts_sec; |
346 | atimeval.tv_usec = vap->va_atime.ts_nsec / 1000; | |
347 | mtimeval.tv_sec = vap->va_mtime.ts_sec; | |
348 | mtimeval.tv_usec = vap->va_mtime.ts_nsec / 1000; | |
349 | if (error = VOP_UPDATE(vp, &atimeval, &mtimeval, 1)) | |
7188ac27 | 350 | return (error); |
5485e062 | 351 | } |
031fd966 | 352 | error = 0; |
e6e1f8be KM |
353 | if (vap->va_mode != (mode_t)VNOVAL) |
354 | error = ufs_chmod(vp, (int)vap->va_mode, cred, p); | |
7188ac27 | 355 | return (error); |
528f664c SL |
356 | } |
357 | ||
4f083fd7 SL |
358 | /* |
359 | * Change the mode on a file. | |
360 | * Inode must be locked before calling. | |
361 | */ | |
ca3e8b68 | 362 | static int |
8e232de3 | 363 | ufs_chmod(vp, mode, cred, p) |
7188ac27 | 364 | register struct vnode *vp; |
528f664c | 365 | register int mode; |
8e232de3 | 366 | register struct ucred *cred; |
c6f5111d | 367 | struct proc *p; |
528f664c | 368 | { |
7188ac27 | 369 | register struct inode *ip = VTOI(vp); |
de412887 | 370 | int error; |
197da11b | 371 | |
de412887 | 372 | if (cred->cr_uid != ip->i_uid && |
c6f5111d | 373 | (error = suser(cred, &p->p_acflag))) |
de412887 | 374 | return (error); |
7188ac27 | 375 | if (cred->cr_uid) { |
e57b6138 | 376 | if (vp->v_type != VDIR && (mode & ISVTX)) |
39b5be4c | 377 | return (EFTYPE); |
e57b6138 | 378 | if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) |
39b5be4c | 379 | return (EPERM); |
f94ceb3b | 380 | } |
39b5be4c | 381 | ip->i_mode &= ~07777; |
7188ac27 | 382 | ip->i_mode |= mode & 07777; |
3e78e260 | 383 | ip->i_flag |= ICHG; |
7188ac27 | 384 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
8986c97c | 385 | (void) vnode_pager_uncache(vp); |
47af7174 | 386 | return (0); |
5485e062 BJ |
387 | } |
388 | ||
528f664c SL |
389 | /* |
390 | * Perform chown operation on inode ip; | |
391 | * inode must be locked prior to call. | |
392 | */ | |
ca3e8b68 | 393 | static int |
8e232de3 | 394 | ufs_chown(vp, uid, gid, cred, p) |
7188ac27 | 395 | register struct vnode *vp; |
38285224 KM |
396 | uid_t uid; |
397 | gid_t gid; | |
8e232de3 | 398 | struct ucred *cred; |
c6f5111d | 399 | struct proc *p; |
528f664c | 400 | { |
7188ac27 | 401 | register struct inode *ip = VTOI(vp); |
4b61628b KM |
402 | uid_t ouid; |
403 | gid_t ogid; | |
404 | int error = 0; | |
528f664c | 405 | #ifdef QUOTA |
4b61628b KM |
406 | register int i; |
407 | long change; | |
bb1b75f4 | 408 | #endif |
528f664c | 409 | |
38285224 | 410 | if (uid == (uid_t)VNOVAL) |
bb1b75f4 | 411 | uid = ip->i_uid; |
38285224 | 412 | if (gid == (gid_t)VNOVAL) |
bb1b75f4 | 413 | gid = ip->i_gid; |
18b0bce6 KB |
414 | /* |
415 | * If we don't own the file, are trying to change the owner | |
416 | * of the file, or are not a member of the target group, | |
417 | * the caller must be superuser or the call fails. | |
418 | */ | |
7188ac27 KM |
419 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
420 | !groupmember((gid_t)gid, cred)) && | |
c6f5111d | 421 | (error = suser(cred, &p->p_acflag))) |
7188ac27 | 422 | return (error); |
4b61628b KM |
423 | ouid = ip->i_uid; |
424 | ogid = ip->i_gid; | |
bb1b75f4 | 425 | #ifdef QUOTA |
4b61628b KM |
426 | if (error = getinoquota(ip)) |
427 | return (error); | |
428 | if (ouid == uid) { | |
429 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
430 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
431 | } | |
432 | if (ogid == gid) { | |
433 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
434 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
435 | } | |
436 | change = ip->i_blocks; | |
437 | (void) chkdq(ip, -change, cred, CHOWN); | |
438 | (void) chkiq(ip, -1, cred, CHOWN); | |
439 | for (i = 0; i < MAXQUOTAS; i++) { | |
440 | dqrele(vp, ip->i_dquot[i]); | |
441 | ip->i_dquot[i] = NODQUOT; | |
442 | } | |
f94ceb3b | 443 | #endif |
bb1b75f4 SL |
444 | ip->i_uid = uid; |
445 | ip->i_gid = gid; | |
528f664c | 446 | #ifdef QUOTA |
4b61628b KM |
447 | if ((error = getinoquota(ip)) == 0) { |
448 | if (ouid == uid) { | |
449 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
450 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
451 | } | |
452 | if (ogid == gid) { | |
453 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
454 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
455 | } | |
456 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
457 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
722a9b31 | 458 | goto good; |
4b61628b KM |
459 | else |
460 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
461 | } | |
462 | for (i = 0; i < MAXQUOTAS; i++) { | |
463 | dqrele(vp, ip->i_dquot[i]); | |
464 | ip->i_dquot[i] = NODQUOT; | |
465 | } | |
466 | } | |
467 | ip->i_uid = ouid; | |
468 | ip->i_gid = ogid; | |
469 | if (getinoquota(ip) == 0) { | |
470 | if (ouid == uid) { | |
471 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
472 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
473 | } | |
474 | if (ogid == gid) { | |
475 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
476 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
477 | } | |
722a9b31 KM |
478 | (void) chkdq(ip, change, cred, FORCE|CHOWN); |
479 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
6cb69bbe | 480 | (void) getinoquota(ip); |
4b61628b | 481 | } |
6cb69bbe | 482 | return (error); |
722a9b31 | 483 | good: |
6cb69bbe KM |
484 | if (getinoquota(ip)) |
485 | panic("chown: lost quota"); | |
486 | #endif /* QUOTA */ | |
4b61628b KM |
487 | if (ouid != uid || ogid != gid) |
488 | ip->i_flag |= ICHG; | |
489 | if (ouid != uid && cred->cr_uid != 0) | |
490 | ip->i_mode &= ~ISUID; | |
491 | if (ogid != gid && cred->cr_uid != 0) | |
492 | ip->i_mode &= ~ISGID; | |
493 | return (0); | |
d67a03eb BJ |
494 | } |
495 | ||
7188ac27 | 496 | /* ARGSUSED */ |
031fd966 | 497 | int |
e6e1f8be | 498 | ufs_ioctl(ap) |
69021bc5 KM |
499 | struct vop_ioctl_args /* { |
500 | struct vnode *a_vp; | |
501 | int a_command; | |
502 | caddr_t a_data; | |
503 | int a_fflag; | |
504 | struct ucred *a_cred; | |
505 | struct proc *a_p; | |
506 | } */ *ap; | |
bb1b75f4 | 507 | { |
bb1b75f4 | 508 | |
7188ac27 KM |
509 | return (ENOTTY); |
510 | } | |
511 | ||
512 | /* ARGSUSED */ | |
031fd966 | 513 | int |
e6e1f8be | 514 | ufs_select(ap) |
69021bc5 KM |
515 | struct vop_select_args /* { |
516 | struct vnode *a_vp; | |
517 | int a_which; | |
518 | int a_fflags; | |
519 | struct ucred *a_cred; | |
520 | struct proc *a_p; | |
521 | } */ *ap; | |
7188ac27 KM |
522 | { |
523 | ||
5b169cb7 KM |
524 | /* |
525 | * We should really check to see if I/O is possible. | |
526 | */ | |
527 | return (1); | |
bb1b75f4 | 528 | } |
d67a03eb | 529 | |
4f083fd7 | 530 | /* |
7188ac27 KM |
531 | * Mmap a file |
532 | * | |
533 | * NB Currently unsupported. | |
4f083fd7 | 534 | */ |
7188ac27 | 535 | /* ARGSUSED */ |
031fd966 | 536 | int |
e6e1f8be | 537 | ufs_mmap(ap) |
69021bc5 KM |
538 | struct vop_mmap_args /* { |
539 | struct vnode *a_vp; | |
540 | int a_fflags; | |
541 | struct ucred *a_cred; | |
542 | struct proc *a_p; | |
543 | } */ *ap; | |
d67a03eb | 544 | { |
d67a03eb | 545 | |
7188ac27 | 546 | return (EINVAL); |
d67a03eb | 547 | } |
64d3a787 | 548 | |
4f083fd7 | 549 | /* |
7188ac27 KM |
550 | * Seek on a file |
551 | * | |
552 | * Nothing to do, so just return. | |
4f083fd7 | 553 | */ |
7188ac27 | 554 | /* ARGSUSED */ |
031fd966 | 555 | int |
e6e1f8be | 556 | ufs_seek(ap) |
69021bc5 KM |
557 | struct vop_seek_args /* { |
558 | struct vnode *a_vp; | |
559 | off_t a_oldoff; | |
560 | off_t a_newoff; | |
561 | struct ucred *a_cred; | |
562 | } */ *ap; | |
528f664c | 563 | { |
7188ac27 KM |
564 | |
565 | return (0); | |
566 | } | |
567 | ||
568 | /* | |
569 | * ufs remove | |
570 | * Hard to avoid races here, especially | |
571 | * in unlinking directories. | |
572 | */ | |
031fd966 | 573 | int |
e6e1f8be | 574 | ufs_remove(ap) |
69021bc5 KM |
575 | struct vop_remove_args /* { |
576 | struct vnode *a_dvp; | |
577 | struct vnode *a_vp; | |
578 | struct componentname *a_cnp; | |
579 | } */ *ap; | |
7188ac27 | 580 | { |
8484f537 KM |
581 | register struct inode *ip; |
582 | register struct vnode *vp = ap->a_vp; | |
583 | register struct vnode *dvp = ap->a_dvp; | |
7188ac27 KM |
584 | int error; |
585 | ||
8484f537 | 586 | ip = VTOI(vp); |
4784d59e KM |
587 | if ((ip->i_flags & (IMMUTABLE | APPEND)) || |
588 | (VTOI(dvp)->i_flags & APPEND)) { | |
589 | error = EPERM; | |
590 | goto out; | |
591 | } | |
592 | if ((error = ufs_dirremove(dvp, ap->a_cnp)) == 0) { | |
7188ac27 KM |
593 | ip->i_nlink--; |
594 | ip->i_flag |= ICHG; | |
528f664c | 595 | } |
4784d59e | 596 | out: |
8484f537 KM |
597 | if (dvp == vp) |
598 | vrele(vp); | |
7188ac27 | 599 | else |
8484f537 KM |
600 | vput(vp); |
601 | vput(dvp); | |
7188ac27 | 602 | return (error); |
4f083fd7 SL |
603 | } |
604 | ||
605 | /* | |
7188ac27 | 606 | * link vnode call |
4f083fd7 | 607 | */ |
031fd966 | 608 | int |
e6e1f8be | 609 | ufs_link(ap) |
69021bc5 KM |
610 | struct vop_link_args /* { |
611 | struct vnode *a_vp; | |
612 | struct vnode *a_tdvp; | |
613 | struct componentname *a_cnp; | |
614 | } */ *ap; | |
4f083fd7 | 615 | { |
e6e1f8be KM |
616 | register struct vnode *vp = ap->a_vp; |
617 | register struct vnode *tdvp = ap->a_tdvp; | |
618 | register struct componentname *cnp = ap->a_cnp; | |
031fd966 | 619 | register struct inode *ip; |
fa4f99ac | 620 | struct timeval tv; |
7188ac27 | 621 | int error; |
4f083fd7 | 622 | |
38285224 | 623 | #ifdef DIAGNOSTIC |
e6e1f8be | 624 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
625 | panic("ufs_link: no name"); |
626 | #endif | |
8484f537 KM |
627 | if (vp->v_mount != tdvp->v_mount) { |
628 | VOP_ABORTOP(vp, cnp); | |
629 | error = EXDEV; | |
630 | goto out2; | |
631 | } | |
632 | if (vp != tdvp && (error = VOP_LOCK(tdvp))) { | |
633 | VOP_ABORTOP(vp, cnp); | |
634 | goto out2; | |
635 | } | |
e6e1f8be | 636 | ip = VTOI(tdvp); |
38285224 | 637 | if ((nlink_t)ip->i_nlink >= LINK_MAX) { |
8484f537 KM |
638 | VOP_ABORTOP(vp, cnp); |
639 | error = EMLINK; | |
640 | goto out1; | |
655da945 | 641 | } |
4784d59e KM |
642 | if (ip->i_flags & (IMMUTABLE | APPEND)) { |
643 | VOP_ABORTOP(vp, cnp); | |
644 | error = EPERM; | |
645 | goto out1; | |
646 | } | |
7188ac27 KM |
647 | ip->i_nlink++; |
648 | ip->i_flag |= ICHG; | |
fa4f99ac CT |
649 | tv = time; |
650 | error = VOP_UPDATE(tdvp, &tv, &tv, 1); | |
7188ac27 | 651 | if (!error) |
e6e1f8be | 652 | error = ufs_direnter(ip, vp, cnp); |
7188ac27 KM |
653 | if (error) { |
654 | ip->i_nlink--; | |
82252d2b | 655 | ip->i_flag |= ICHG; |
7188ac27 | 656 | } |
8484f537 KM |
657 | FREE(cnp->cn_pnbuf, M_NAMEI); |
658 | out1: | |
659 | if (vp != tdvp) | |
660 | VOP_UNLOCK(tdvp); | |
661 | out2: | |
662 | vput(vp); | |
7188ac27 | 663 | return (error); |
528f664c SL |
664 | } |
665 | ||
cfef4373 JH |
666 | |
667 | ||
668 | /* | |
669 | * relookup - lookup a path name component | |
670 | * Used by lookup to re-aquire things. | |
671 | */ | |
672 | int | |
6e57e9ff | 673 | relookup(dvp, vpp, cnp) |
cfef4373 JH |
674 | struct vnode *dvp, **vpp; |
675 | struct componentname *cnp; | |
676 | { | |
cfef4373 JH |
677 | register struct vnode *dp = 0; /* the directory we are searching */ |
678 | struct vnode *tdp; /* saved dp */ | |
679 | struct mount *mp; /* mount table entry */ | |
680 | int docache; /* == 0 do not cache last component */ | |
681 | int wantparent; /* 1 => wantparent or lockparent flag */ | |
682 | int rdonly; /* lookup read-only flag bit */ | |
d36023e3 KM |
683 | char *cp; /* DEBUG: check name ptr/len */ |
684 | int newhash; /* DEBUG: check name hash */ | |
cfef4373 | 685 | int error = 0; |
cfef4373 JH |
686 | |
687 | /* | |
688 | * Setup: break out flag bits into variables. | |
689 | */ | |
690 | wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); | |
691 | docache = (cnp->cn_flags & NOCACHE) ^ NOCACHE; | |
d7961b1d JH |
692 | if (cnp->cn_nameiop == DELETE || |
693 | (wantparent && cnp->cn_nameiop != CREATE)) | |
cfef4373 JH |
694 | docache = 0; |
695 | rdonly = cnp->cn_flags & RDONLY; | |
696 | cnp->cn_flags &= ~ISSYMLINK; | |
697 | dp = dvp; | |
698 | VOP_LOCK(dp); | |
699 | ||
700 | /* dirloop: */ | |
701 | /* | |
702 | * Search a new directory. | |
703 | * | |
704 | * The cn_hash value is for use by vfs_cache. | |
705 | * The last component of the filename is left accessible via | |
706 | * cnp->cn_nameptr for callers that need the name. Callers needing | |
707 | * the name set the SAVENAME flag. When done, they assume | |
708 | * responsibility for freeing the pathname buffer. | |
709 | */ | |
6e57e9ff | 710 | #ifdef NAMEI_DIAGNOSTIC |
d36023e3 | 711 | for (newhash = 0, cp = cnp->cn_nameptr; *cp != 0 && *cp != '/'; cp++) |
cfef4373 JH |
712 | newhash += (unsigned char)*cp; |
713 | if (newhash != cnp->cn_hash) | |
714 | panic("relookup: bad hash"); | |
715 | if (cnp->cn_namelen != cp - cnp->cn_nameptr) | |
716 | panic ("relookup: bad len"); | |
d36023e3 KM |
717 | if (*cp != 0) |
718 | panic("relookup: not last component"); | |
cfef4373 | 719 | printf("{%s}: ", cnp->cn_nameptr); |
cfef4373 | 720 | #endif |
cfef4373 JH |
721 | |
722 | /* | |
723 | * Check for degenerate name (e.g. / or "") | |
724 | * which is a way of talking about a directory, | |
725 | * e.g. like "/." or ".". | |
726 | */ | |
727 | if (cnp->cn_nameptr[0] == '\0') { | |
728 | if (cnp->cn_nameiop != LOOKUP || wantparent) { | |
729 | error = EISDIR; | |
730 | goto bad; | |
731 | } | |
732 | if (dp->v_type != VDIR) { | |
733 | error = ENOTDIR; | |
734 | goto bad; | |
735 | } | |
736 | if (!(cnp->cn_flags & LOCKLEAF)) | |
737 | VOP_UNLOCK(dp); | |
738 | *vpp = dp; | |
739 | if (cnp->cn_flags & SAVESTART) | |
740 | panic("lookup: SAVESTART"); | |
741 | return (0); | |
742 | } | |
743 | ||
cfef4373 JH |
744 | if (cnp->cn_flags & ISDOTDOT) |
745 | panic ("relookup: lookup on dot-dot"); | |
746 | ||
747 | /* | |
748 | * We now have a segment name to search for, and a directory to search. | |
749 | */ | |
750 | if (error = VOP_LOOKUP(dp, vpp, cnp)) { | |
751 | #ifdef DIAGNOSTIC | |
752 | if (*vpp != NULL) | |
753 | panic("leaf should be empty"); | |
cfef4373 | 754 | #endif |
39a892ba | 755 | if (error != EJUSTRETURN) |
cfef4373 JH |
756 | goto bad; |
757 | /* | |
758 | * If creating and at end of pathname, then can consider | |
759 | * allowing file to be created. | |
760 | */ | |
761 | if (rdonly || (dvp->v_mount->mnt_flag & MNT_RDONLY)) { | |
762 | error = EROFS; | |
763 | goto bad; | |
764 | } | |
d36023e3 KM |
765 | /* ASSERT(dvp == ndp->ni_startdir) */ |
766 | if (cnp->cn_flags & SAVESTART) | |
767 | VREF(dvp); | |
cfef4373 JH |
768 | /* |
769 | * We return with ni_vp NULL to indicate that the entry | |
770 | * doesn't currently exist, leaving a pointer to the | |
771 | * (possibly locked) directory inode in ndp->ni_dvp. | |
772 | */ | |
cfef4373 JH |
773 | return (0); |
774 | } | |
cfef4373 | 775 | dp = *vpp; |
2021967e | 776 | |
6e57e9ff | 777 | #ifdef DIAGNOSTIC |
cfef4373 JH |
778 | /* |
779 | * Check for symbolic link | |
780 | */ | |
2021967e | 781 | if (dp->v_type == VLNK && (cnp->cn_flags & FOLLOW)) |
cfef4373 | 782 | panic ("relookup: symlink found.\n"); |
cfef4373 | 783 | #endif |
cfef4373 | 784 | |
cfef4373 | 785 | nextname: |
cfef4373 JH |
786 | /* |
787 | * Check for read-only file systems. | |
788 | */ | |
789 | if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) { | |
790 | /* | |
791 | * Disallow directory write attempts on read-only | |
792 | * file systems. | |
793 | */ | |
794 | if (rdonly || (dp->v_mount->mnt_flag & MNT_RDONLY) || | |
795 | (wantparent && | |
796 | (dvp->v_mount->mnt_flag & MNT_RDONLY))) { | |
797 | error = EROFS; | |
798 | goto bad2; | |
799 | } | |
800 | } | |
d36023e3 KM |
801 | /* ASSERT(dvp == ndp->ni_startdir) */ |
802 | if (cnp->cn_flags & SAVESTART) | |
cfef4373 | 803 | VREF(dvp); |
cfef4373 JH |
804 | |
805 | if (!wantparent) | |
806 | vrele(dvp); | |
807 | if ((cnp->cn_flags & LOCKLEAF) == 0) | |
808 | VOP_UNLOCK(dp); | |
809 | return (0); | |
810 | ||
811 | bad2: | |
812 | if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) | |
813 | VOP_UNLOCK(dvp); | |
814 | vrele(dvp); | |
815 | bad: | |
816 | vput(dp); | |
817 | *vpp = NULL; | |
818 | return (error); | |
819 | } | |
820 | ||
821 | ||
4f083fd7 SL |
822 | /* |
823 | * Rename system call. | |
824 | * rename("foo", "bar"); | |
825 | * is essentially | |
826 | * unlink("bar"); | |
827 | * link("foo", "bar"); | |
828 | * unlink("foo"); | |
829 | * but ``atomically''. Can't do full commit without saving state in the | |
830 | * inode on disk which isn't feasible at this time. Best we can do is | |
831 | * always guarantee the target exists. | |
832 | * | |
833 | * Basic algorithm is: | |
834 | * | |
835 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 836 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
837 | * from underneath us while we work (it may be truncated by |
838 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
839 | * 2) Link source to destination. If destination already exists, |
840 | * delete it first. | |
68f21562 KM |
841 | * 3) Unlink source reference to inode if still around. If a |
842 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
843 | * is different from the source, patch the ".." entry in the |
844 | * directory. | |
4f083fd7 | 845 | */ |
031fd966 | 846 | int |
e6e1f8be | 847 | ufs_rename(ap) |
69021bc5 KM |
848 | struct vop_rename_args /* { |
849 | struct vnode *a_fdvp; | |
850 | struct vnode *a_fvp; | |
851 | struct componentname *a_fcnp; | |
852 | struct vnode *a_tdvp; | |
853 | struct vnode *a_tvp; | |
854 | struct componentname *a_tcnp; | |
855 | } */ *ap; | |
528f664c | 856 | { |
e6e1f8be KM |
857 | struct vnode *tvp = ap->a_tvp; |
858 | register struct vnode *tdvp = ap->a_tdvp; | |
859 | struct vnode *fvp = ap->a_fvp; | |
860 | register struct vnode *fdvp = ap->a_fdvp; | |
861 | register struct componentname *tcnp = ap->a_tcnp; | |
862 | register struct componentname *fcnp = ap->a_fcnp; | |
4f083fd7 | 863 | register struct inode *ip, *xp, *dp; |
68f21562 | 864 | struct dirtemplate dirbuf; |
fa4f99ac | 865 | struct timeval tv; |
68f21562 | 866 | int doingdirectory = 0, oldparent = 0, newparent = 0; |
a5390dce | 867 | int error = 0; |
cfef4373 | 868 | int fdvpneedsrele = 1, tdvpneedsrele = 1; |
86fb5449 | 869 | u_char namlen; |
4f083fd7 | 870 | |
8484f537 KM |
871 | #ifdef DIAGNOSTIC |
872 | if ((tcnp->cn_flags & HASBUF) == 0 || | |
873 | (fcnp->cn_flags & HASBUF) == 0) | |
874 | panic("ufs_rename: no name"); | |
875 | #endif | |
876 | /* | |
877 | * Check for cross-device rename. | |
878 | */ | |
e6e1f8be KM |
879 | if ((fvp->v_mount != tdvp->v_mount) || |
880 | (tvp && (fvp->v_mount != tvp->v_mount))) { | |
8484f537 KM |
881 | error = EXDEV; |
882 | abortit: | |
e6e1f8be KM |
883 | VOP_ABORTOP(tdvp, tcnp); /* XXX, why not in NFS? */ |
884 | if (tdvp == tvp) | |
885 | vrele(tdvp); | |
3330c9fe | 886 | else |
e6e1f8be KM |
887 | vput(tdvp); |
888 | if (tvp) | |
889 | vput(tvp); | |
890 | VOP_ABORTOP(fdvp, fcnp); /* XXX, why not in NFS? */ | |
891 | vrele(fdvp); | |
892 | vrele(fvp); | |
8484f537 | 893 | return (error); |
3330c9fe JSP |
894 | } |
895 | ||
655da945 KM |
896 | /* |
897 | * Check if just deleting a link name. | |
898 | */ | |
4784d59e KM |
899 | if (tvp && ((VTOI(tvp)->i_flags & (IMMUTABLE | APPEND)) || |
900 | (VTOI(tdvp)->i_flags & APPEND))) { | |
901 | error = EPERM; | |
902 | goto abortit; | |
903 | } | |
e6e1f8be | 904 | if (fvp == tvp) { |
8484f537 KM |
905 | if (fvp->v_type == VDIR) { |
906 | error = EINVAL; | |
907 | goto abortit; | |
908 | } | |
909 | VOP_ABORTOP(fdvp, fcnp); | |
910 | vrele(fdvp); | |
911 | vrele(fvp); | |
e6e1f8be KM |
912 | vput(tdvp); |
913 | vput(tvp); | |
8484f537 KM |
914 | tcnp->cn_flags &= ~MODMASK; |
915 | tcnp->cn_flags |= LOCKPARENT | LOCKLEAF; | |
916 | if ((tcnp->cn_flags & SAVESTART) == 0) | |
917 | panic("ufs_rename: lost from startdir"); | |
918 | tcnp->cn_nameiop = DELETE; | |
919 | (void) relookup(tdvp, &tvp, tcnp); | |
920 | return (VOP_REMOVE(tdvp, tvp, tcnp)); | |
655da945 | 921 | } |
8484f537 KM |
922 | if (error = VOP_LOCK(fvp)) |
923 | goto abortit; | |
924 | dp = VTOI(fdvp); | |
925 | ip = VTOI(fvp); | |
4784d59e KM |
926 | if ((ip->i_flags & (IMMUTABLE | APPEND)) || (dp->i_flags & APPEND)) { |
927 | VOP_UNLOCK(fvp); | |
928 | error = EPERM; | |
929 | goto abortit; | |
930 | } | |
8484f537 | 931 | if ((ip->i_mode & IFMT) == IFDIR) { |
4f083fd7 | 932 | /* |
046f18d1 | 933 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 934 | */ |
e6e1f8be KM |
935 | if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || |
936 | dp == ip || (fcnp->cn_flags&ISDOTDOT) || | |
937 | (ip->i_flag & IRENAME)) { | |
8484f537 KM |
938 | VOP_UNLOCK(fvp); |
939 | error = EINVAL; | |
940 | goto abortit; | |
4f083fd7 | 941 | } |
68f21562 | 942 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
943 | oldparent = dp->i_number; |
944 | doingdirectory++; | |
945 | } | |
e6e1f8be | 946 | vrele(fdvp); |
4f083fd7 | 947 | |
8484f537 KM |
948 | /* |
949 | * When the target exists, both the directory | |
950 | * and target vnodes are returned locked. | |
951 | */ | |
952 | dp = VTOI(tdvp); | |
953 | xp = NULL; | |
954 | if (tvp) | |
955 | xp = VTOI(tvp); | |
956 | ||
4f083fd7 SL |
957 | /* |
958 | * 1) Bump link count while we're moving stuff | |
959 | * around. If we crash somewhere before | |
960 | * completing our work, the link count | |
961 | * may be wrong, but correctable. | |
962 | */ | |
963 | ip->i_nlink++; | |
964 | ip->i_flag |= ICHG; | |
fa4f99ac | 965 | tv = time; |
8484f537 KM |
966 | if (error = VOP_UPDATE(fvp, &tv, &tv, 1)) { |
967 | VOP_UNLOCK(fvp); | |
968 | goto bad; | |
969 | } | |
4f083fd7 | 970 | |
046f18d1 SL |
971 | /* |
972 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
973 | * parent) then the source directory must not be in the |
974 | * directory heirarchy above the target, as this would | |
975 | * orphan everything below the source directory. Also | |
976 | * the user must have write permission in the source so | |
977 | * as to be able to change "..". We must repeat the call | |
978 | * to namei, as the parent directory is unlocked by the | |
979 | * call to checkpath(). | |
046f18d1 | 980 | */ |
8484f537 KM |
981 | error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc); |
982 | VOP_UNLOCK(fvp); | |
68f21562 KM |
983 | if (oldparent != dp->i_number) |
984 | newparent = dp->i_number; | |
985 | if (doingdirectory && newparent) { | |
8484f537 | 986 | if (error) /* write access check above */ |
81552f0f | 987 | goto bad; |
655da945 | 988 | if (xp != NULL) |
8484f537 | 989 | vput(tvp); |
e6e1f8be | 990 | if (error = ufs_checkpath(ip, dp, tcnp->cn_cred)) |
655da945 | 991 | goto out; |
e6e1f8be | 992 | if ((tcnp->cn_flags & SAVESTART) == 0) |
655da945 | 993 | panic("ufs_rename: lost to startdir"); |
5e03b55d | 994 | p->p_spare[1]--; |
e6e1f8be | 995 | if (error = relookup(tdvp, &tvp, tcnp)) |
655da945 | 996 | goto out; |
e6e1f8be | 997 | dp = VTOI(tdvp); |
655da945 | 998 | xp = NULL; |
e6e1f8be KM |
999 | if (tvp) |
1000 | xp = VTOI(tvp); | |
81552f0f | 1001 | } |
4f083fd7 SL |
1002 | /* |
1003 | * 2) If target doesn't exist, link the target | |
1004 | * to the source and unlink the source. | |
1005 | * Otherwise, rewrite the target directory | |
1006 | * entry to reference the source inode and | |
1007 | * expunge the original entry's existence. | |
1008 | */ | |
4f083fd7 | 1009 | if (xp == NULL) { |
7188ac27 KM |
1010 | if (dp->i_dev != ip->i_dev) |
1011 | panic("rename: EXDEV"); | |
4f083fd7 | 1012 | /* |
68f21562 KM |
1013 | * Account for ".." in new directory. |
1014 | * When source and destination have the same | |
1015 | * parent we don't fool with the link count. | |
4f083fd7 | 1016 | */ |
68f21562 | 1017 | if (doingdirectory && newparent) { |
38285224 | 1018 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
986aedaa KM |
1019 | error = EMLINK; |
1020 | goto bad; | |
1021 | } | |
4f083fd7 SL |
1022 | dp->i_nlink++; |
1023 | dp->i_flag |= ICHG; | |
8484f537 | 1024 | if (error = VOP_UPDATE(tdvp, &tv, &tv, 1)) |
986aedaa | 1025 | goto bad; |
4f083fd7 | 1026 | } |
e6e1f8be | 1027 | if (error = ufs_direnter(ip, tdvp, tcnp)) { |
394d67a8 KM |
1028 | if (doingdirectory && newparent) { |
1029 | dp->i_nlink--; | |
1030 | dp->i_flag |= ICHG; | |
8484f537 | 1031 | (void)VOP_UPDATE(tdvp, &tv, &tv, 1); |
394d67a8 KM |
1032 | } |
1033 | goto bad; | |
1034 | } | |
8484f537 | 1035 | vput(tdvp); |
4f083fd7 | 1036 | } else { |
7188ac27 KM |
1037 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
1038 | panic("rename: EXDEV"); | |
e69c3c9c SL |
1039 | /* |
1040 | * Short circuit rename(foo, foo). | |
1041 | */ | |
1042 | if (xp->i_number == ip->i_number) | |
7188ac27 | 1043 | panic("rename: same file"); |
80cee150 JB |
1044 | /* |
1045 | * If the parent directory is "sticky", then the user must | |
1046 | * own the parent directory, or the destination of the rename, | |
1047 | * otherwise the destination may not be changed (except by | |
1048 | * root). This implements append-only directories. | |
1049 | */ | |
e6e1f8be KM |
1050 | if ((dp->i_mode & ISVTX) && tcnp->cn_cred->cr_uid != 0 && |
1051 | tcnp->cn_cred->cr_uid != dp->i_uid && | |
1052 | xp->i_uid != tcnp->cn_cred->cr_uid) { | |
80cee150 JB |
1053 | error = EPERM; |
1054 | goto bad; | |
1055 | } | |
4f083fd7 | 1056 | /* |
655da945 KM |
1057 | * Target must be empty if a directory and have no links |
1058 | * to it. Also, ensure source and target are compatible | |
1059 | * (both directories, or both not directories). | |
4f083fd7 SL |
1060 | */ |
1061 | if ((xp->i_mode&IFMT) == IFDIR) { | |
e6e1f8be | 1062 | if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) || |
7188ac27 | 1063 | xp->i_nlink > 2) { |
a5390dce | 1064 | error = ENOTEMPTY; |
4f083fd7 SL |
1065 | goto bad; |
1066 | } | |
1067 | if (!doingdirectory) { | |
a5390dce | 1068 | error = ENOTDIR; |
4f083fd7 SL |
1069 | goto bad; |
1070 | } | |
8484f537 | 1071 | cache_purge(tdvp); |
4f083fd7 | 1072 | } else if (doingdirectory) { |
a5390dce | 1073 | error = EISDIR; |
4f083fd7 SL |
1074 | goto bad; |
1075 | } | |
e6e1f8be | 1076 | if (error = ufs_dirrewrite(dp, ip, tcnp)) |
7188ac27 | 1077 | goto bad; |
a62786b9 KM |
1078 | /* |
1079 | * If the target directory is in the same | |
1080 | * directory as the source directory, | |
1081 | * decrement the link count on the parent | |
1082 | * of the target directory. | |
1083 | */ | |
1084 | if (doingdirectory && !newparent) { | |
1085 | dp->i_nlink--; | |
1086 | dp->i_flag |= ICHG; | |
1087 | } | |
8484f537 | 1088 | vput(tdvp); |
4f083fd7 | 1089 | /* |
a5390dce SL |
1090 | * Adjust the link count of the target to |
1091 | * reflect the dirrewrite above. If this is | |
1092 | * a directory it is empty and there are | |
1093 | * no links to it, so we can squash the inode and | |
1094 | * any space associated with it. We disallowed | |
1095 | * renaming over top of a directory with links to | |
68f21562 KM |
1096 | * it above, as the remaining link would point to |
1097 | * a directory without "." or ".." entries. | |
4f083fd7 | 1098 | */ |
a5390dce | 1099 | xp->i_nlink--; |
4f083fd7 | 1100 | if (doingdirectory) { |
a5390dce SL |
1101 | if (--xp->i_nlink != 0) |
1102 | panic("rename: linked directory"); | |
8484f537 | 1103 | error = VOP_TRUNCATE(tvp, (off_t)0, IO_SYNC, |
69021bc5 | 1104 | tcnp->cn_cred, tcnp->cn_proc); |
a5390dce | 1105 | } |
4f083fd7 | 1106 | xp->i_flag |= ICHG; |
8484f537 | 1107 | vput(tvp); |
31db12cb | 1108 | xp = NULL; |
4f083fd7 SL |
1109 | } |
1110 | ||
1111 | /* | |
1112 | * 3) Unlink the source. | |
1113 | */ | |
e6e1f8be KM |
1114 | fcnp->cn_flags &= ~MODMASK; |
1115 | fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; | |
1116 | if ((fcnp->cn_flags & SAVESTART) == 0) | |
655da945 | 1117 | panic("ufs_rename: lost from startdir"); |
5e03b55d | 1118 | p->p_spare[1]--; |
e6e1f8be KM |
1119 | (void) relookup(fdvp, &fvp, fcnp); |
1120 | if (fvp != NULL) { | |
1121 | xp = VTOI(fvp); | |
1122 | dp = VTOI(fdvp); | |
7188ac27 | 1123 | } else { |
d9d75b8f KM |
1124 | /* |
1125 | * From name has disappeared. | |
1126 | */ | |
1127 | if (doingdirectory) | |
1128 | panic("rename: lost dir entry"); | |
8484f537 | 1129 | vrele(ap->a_fvp); |
d9d75b8f | 1130 | return (0); |
7188ac27 | 1131 | } |
4f083fd7 | 1132 | /* |
7188ac27 | 1133 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
1134 | * changed while the new name has been entered. If the source is |
1135 | * a file then the entry may have been unlinked or renamed. In | |
1136 | * either case there is no further work to be done. If the source | |
1137 | * is a directory then it cannot have been rmdir'ed; its link | |
1138 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 1139 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 1140 | * rename. |
4f083fd7 | 1141 | */ |
4f1a9037 | 1142 | if (xp != ip) { |
68f21562 | 1143 | if (doingdirectory) |
4f1a9037 | 1144 | panic("rename: lost dir entry"); |
68f21562 | 1145 | } else { |
4f083fd7 | 1146 | /* |
68f21562 KM |
1147 | * If the source is a directory with a |
1148 | * new parent, the link count of the old | |
1149 | * parent directory must be decremented | |
1150 | * and ".." set to point to the new parent. | |
4f083fd7 | 1151 | */ |
68f21562 | 1152 | if (doingdirectory && newparent) { |
4f083fd7 SL |
1153 | dp->i_nlink--; |
1154 | dp->i_flag |= ICHG; | |
8484f537 | 1155 | error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf, |
7188ac27 | 1156 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 | 1157 | UIO_SYSSPACE, IO_NODELOCKED, |
e6e1f8be | 1158 | tcnp->cn_cred, (int *)0, (struct proc *)0); |
68f21562 | 1159 | if (error == 0) { |
86fb5449 KM |
1160 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1161 | if (fvp->v_mount->mnt_maxsymlinklen <= 0) | |
1162 | namlen = dirbuf.dotdot_type; | |
1163 | else | |
1164 | namlen = dirbuf.dotdot_namlen; | |
1165 | # else | |
1166 | namlen = dirbuf.dotdot_namlen; | |
1167 | # endif | |
1168 | if (namlen != 2 || | |
68f21562 KM |
1169 | dirbuf.dotdot_name[0] != '.' || |
1170 | dirbuf.dotdot_name[1] != '.') { | |
362d7f3b | 1171 | ufs_dirbad(xp, (doff_t)12, |
031fd966 | 1172 | "rename: mangled dir"); |
68f21562 KM |
1173 | } else { |
1174 | dirbuf.dotdot_ino = newparent; | |
8484f537 | 1175 | (void) vn_rdwr(UIO_WRITE, fvp, |
68f21562 KM |
1176 | (caddr_t)&dirbuf, |
1177 | sizeof (struct dirtemplate), | |
93e273b9 | 1178 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1179 | IO_NODELOCKED|IO_SYNC, |
e6e1f8be | 1180 | tcnp->cn_cred, (int *)0, |
5b169cb7 | 1181 | (struct proc *)0); |
8484f537 | 1182 | cache_purge(fdvp); |
68f21562 KM |
1183 | } |
1184 | } | |
4f083fd7 | 1185 | } |
e6e1f8be | 1186 | error = ufs_dirremove(fdvp, fcnp); |
7188ac27 | 1187 | if (!error) { |
68f21562 KM |
1188 | xp->i_nlink--; |
1189 | xp->i_flag |= ICHG; | |
4f083fd7 | 1190 | } |
68f21562 | 1191 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1192 | } |
4f083fd7 | 1193 | if (dp) |
8484f537 | 1194 | vput(fdvp); |
68f21562 | 1195 | if (xp) |
8484f537 KM |
1196 | vput(fvp); |
1197 | vrele(ap->a_fvp); | |
7188ac27 | 1198 | return (error); |
a5390dce | 1199 | |
4f083fd7 | 1200 | bad: |
4f083fd7 | 1201 | if (xp) |
7188ac27 KM |
1202 | vput(ITOV(xp)); |
1203 | vput(ITOV(dp)); | |
4f083fd7 | 1204 | out: |
8484f537 KM |
1205 | if (VOP_LOCK(fvp) == 0) { |
1206 | ip->i_nlink--; | |
1207 | ip->i_flag |= ICHG; | |
1208 | vput(fvp); | |
1209 | } else | |
1210 | vrele(fvp); | |
7188ac27 | 1211 | return (error); |
64d3a787 | 1212 | } |
88a7a62a SL |
1213 | |
1214 | /* | |
1215 | * A virgin directory (no blushing please). | |
1216 | */ | |
031fd966 | 1217 | static struct dirtemplate mastertemplate = { |
86fb5449 KM |
1218 | 0, 12, DT_DIR, 1, ".", |
1219 | 0, DIRBLKSIZ - 12, DT_DIR, 2, ".." | |
1220 | }; | |
1221 | static struct odirtemplate omastertemplate = { | |
88a7a62a SL |
1222 | 0, 12, 1, ".", |
1223 | 0, DIRBLKSIZ - 12, 2, ".." | |
1224 | }; | |
1225 | ||
1226 | /* | |
1227 | * Mkdir system call | |
1228 | */ | |
031fd966 | 1229 | int |
e6e1f8be | 1230 | ufs_mkdir(ap) |
69021bc5 KM |
1231 | struct vop_mkdir_args /* { |
1232 | struct vnode *a_dvp; | |
1233 | struct vnode **a_vpp; | |
1234 | struct componentname *a_cnp; | |
1235 | struct vattr *a_vap; | |
1236 | } */ *ap; | |
88a7a62a | 1237 | { |
e6e1f8be KM |
1238 | register struct vnode *dvp = ap->a_dvp; |
1239 | register struct vattr *vap = ap->a_vap; | |
1240 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1241 | register struct inode *ip, *dp; |
c59af027 | 1242 | struct vnode *tvp; |
86fb5449 | 1243 | struct dirtemplate dirtemplate, *dtp; |
fa4f99ac CT |
1244 | struct timeval tv; |
1245 | int error, dmode; | |
7188ac27 | 1246 | |
38285224 | 1247 | #ifdef DIAGNOSTIC |
e6e1f8be | 1248 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
1249 | panic("ufs_mkdir: no name"); |
1250 | #endif | |
e6e1f8be | 1251 | dp = VTOI(dvp); |
38285224 | 1252 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
4784d59e KM |
1253 | error = EMLINK; |
1254 | goto out; | |
986aedaa | 1255 | } |
4784d59e | 1256 | dmode = vap->va_mode & 0777; |
7188ac27 | 1257 | dmode |= IFDIR; |
88a7a62a | 1258 | /* |
655da945 KM |
1259 | * Must simulate part of maknode here to acquire the inode, but |
1260 | * not have it entered in the parent directory. The entry is made | |
1261 | * later after writing "." and ".." entries. | |
88a7a62a | 1262 | */ |
4784d59e KM |
1263 | if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp)) |
1264 | goto out; | |
c59af027 | 1265 | ip = VTOI(tvp); |
e6e1f8be | 1266 | ip->i_uid = cnp->cn_cred->cr_uid; |
4b61628b | 1267 | ip->i_gid = dp->i_gid; |
88a7a62a | 1268 | #ifdef QUOTA |
4b61628b | 1269 | if ((error = getinoquota(ip)) || |
e6e1f8be KM |
1270 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
1271 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 1272 | VOP_VFREE(tvp, ip->i_number, dmode); |
8484f537 KM |
1273 | vput(tvp); |
1274 | vput(dvp); | |
4b61628b KM |
1275 | return (error); |
1276 | } | |
88a7a62a SL |
1277 | #endif |
1278 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 | 1279 | ip->i_mode = dmode; |
8484f537 | 1280 | tvp->v_type = VDIR; /* Rest init'd in iget() */ |
88a7a62a | 1281 | ip->i_nlink = 2; |
fa4f99ac | 1282 | tv = time; |
8484f537 | 1283 | error = VOP_UPDATE(tvp, &tv, &tv, 1); |
88a7a62a SL |
1284 | |
1285 | /* | |
1286 | * Bump link count in parent directory | |
1287 | * to reflect work done below. Should | |
1288 | * be done before reference is created | |
1289 | * so reparation is possible if we crash. | |
1290 | */ | |
1291 | dp->i_nlink++; | |
1292 | dp->i_flag |= ICHG; | |
8484f537 | 1293 | if (error = VOP_UPDATE(dvp, &tv, &tv, 1)) |
394d67a8 | 1294 | goto bad; |
88a7a62a | 1295 | |
031fd966 | 1296 | /* Initialize directory with "." and ".." from static template. */ |
86fb5449 KM |
1297 | if (dvp->v_mount->mnt_maxsymlinklen > 0) |
1298 | dtp = &mastertemplate; | |
1299 | else | |
1300 | dtp = (struct dirtemplate *)&omastertemplate; | |
1301 | dirtemplate = *dtp; | |
88a7a62a SL |
1302 | dirtemplate.dot_ino = ip->i_number; |
1303 | dirtemplate.dotdot_ino = dp->i_number; | |
8484f537 | 1304 | error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate, |
5b169cb7 | 1305 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
e6e1f8be | 1306 | IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0, (struct proc *)0); |
7188ac27 | 1307 | if (error) { |
88a7a62a SL |
1308 | dp->i_nlink--; |
1309 | dp->i_flag |= ICHG; | |
1310 | goto bad; | |
1311 | } | |
e6e1f8be | 1312 | if (DIRBLKSIZ > VFSTOUFS(dvp->v_mount)->um_mountp->mnt_stat.f_bsize) |
031fd966 KB |
1313 | panic("ufs_mkdir: blksize"); /* XXX should grow with balloc() */ |
1314 | else { | |
23de9f20 | 1315 | ip->i_size = DIRBLKSIZ; |
15365e07 KM |
1316 | ip->i_flag |= ICHG; |
1317 | } | |
031fd966 KB |
1318 | |
1319 | /* Directory set up, now install it's entry in the parent directory. */ | |
e6e1f8be | 1320 | if (error = ufs_direnter(ip, dvp, cnp)) { |
2a5d2f56 KM |
1321 | dp->i_nlink--; |
1322 | dp->i_flag |= ICHG; | |
88a7a62a SL |
1323 | } |
1324 | bad: | |
1325 | /* | |
c59af027 KM |
1326 | * No need to do an explicit VOP_TRUNCATE here, vrele will do this |
1327 | * for us because we set the link count to 0. | |
88a7a62a | 1328 | */ |
7188ac27 | 1329 | if (error) { |
88a7a62a SL |
1330 | ip->i_nlink = 0; |
1331 | ip->i_flag |= ICHG; | |
8484f537 | 1332 | vput(tvp); |
cbcdacd6 | 1333 | } else |
8484f537 | 1334 | *ap->a_vpp = tvp; |
4784d59e | 1335 | out: |
e6e1f8be | 1336 | FREE(cnp->cn_pnbuf, M_NAMEI); |
8484f537 | 1337 | vput(dvp); |
7188ac27 | 1338 | return (error); |
88a7a62a SL |
1339 | } |
1340 | ||
1341 | /* | |
1342 | * Rmdir system call. | |
1343 | */ | |
031fd966 | 1344 | int |
e6e1f8be | 1345 | ufs_rmdir(ap) |
69021bc5 | 1346 | struct vop_rmdir_args /* { |
69021bc5 KM |
1347 | struct vnode *a_dvp; |
1348 | struct vnode *a_vp; | |
1349 | struct componentname *a_cnp; | |
1350 | } */ *ap; | |
88a7a62a | 1351 | { |
8484f537 | 1352 | register struct vnode *vp = ap->a_vp; |
e6e1f8be KM |
1353 | register struct vnode *dvp = ap->a_dvp; |
1354 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1355 | register struct inode *ip, *dp; |
031fd966 | 1356 | int error; |
7188ac27 | 1357 | |
8484f537 | 1358 | ip = VTOI(vp); |
e6e1f8be | 1359 | dp = VTOI(dvp); |
88a7a62a SL |
1360 | /* |
1361 | * No rmdir "." please. | |
1362 | */ | |
1363 | if (dp == ip) { | |
e6e1f8be | 1364 | vrele(dvp); |
8484f537 | 1365 | vput(vp); |
7188ac27 | 1366 | return (EINVAL); |
88a7a62a SL |
1367 | } |
1368 | /* | |
1369 | * Verify the directory is empty (and valid). | |
1370 | * (Rmdir ".." won't be valid since | |
1371 | * ".." will contain a reference to | |
1372 | * the current directory and thus be | |
1373 | * non-empty.) | |
1374 | */ | |
031fd966 KB |
1375 | error = 0; |
1376 | if (ip->i_nlink != 2 || | |
e6e1f8be | 1377 | !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) { |
7188ac27 | 1378 | error = ENOTEMPTY; |
88a7a62a SL |
1379 | goto out; |
1380 | } | |
4784d59e KM |
1381 | if ((dp->i_flags & APPEND) || (ip->i_flags & (IMMUTABLE | APPEND))) { |
1382 | error = EPERM; | |
1383 | goto out; | |
1384 | } | |
88a7a62a SL |
1385 | /* |
1386 | * Delete reference to directory before purging | |
1387 | * inode. If we crash in between, the directory | |
1388 | * will be reattached to lost+found, | |
1389 | */ | |
e6e1f8be | 1390 | if (error = ufs_dirremove(dvp, cnp)) |
88a7a62a SL |
1391 | goto out; |
1392 | dp->i_nlink--; | |
1393 | dp->i_flag |= ICHG; | |
e6e1f8be | 1394 | cache_purge(dvp); |
8484f537 | 1395 | vput(dvp); |
e6e1f8be | 1396 | dvp = NULL; |
88a7a62a SL |
1397 | /* |
1398 | * Truncate inode. The only stuff left | |
1399 | * in the directory is "." and "..". The | |
1400 | * "." reference is inconsequential since | |
1401 | * we're quashing it. The ".." reference | |
1402 | * has already been adjusted above. We've | |
1403 | * removed the "." reference and the reference | |
1404 | * in the parent directory, but there may be | |
1405 | * other hard links so decrement by 2 and | |
1406 | * worry about them later. | |
1407 | */ | |
1408 | ip->i_nlink -= 2; | |
8484f537 | 1409 | error = VOP_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred, |
69021bc5 | 1410 | cnp->cn_proc); |
7188ac27 | 1411 | cache_purge(ITOV(ip)); |
88a7a62a | 1412 | out: |
e6e1f8be | 1413 | if (dvp) |
8484f537 KM |
1414 | vput(dvp); |
1415 | vput(vp); | |
7188ac27 | 1416 | return (error); |
88a7a62a SL |
1417 | } |
1418 | ||
7188ac27 KM |
1419 | /* |
1420 | * symlink -- make a symbolic link | |
1421 | */ | |
031fd966 | 1422 | int |
e6e1f8be | 1423 | ufs_symlink(ap) |
69021bc5 KM |
1424 | struct vop_symlink_args /* { |
1425 | struct vnode *a_dvp; | |
1426 | struct vnode **a_vpp; | |
1427 | struct componentname *a_cnp; | |
1428 | struct vattr *a_vap; | |
1429 | char *a_target; | |
1430 | } */ *ap; | |
7188ac27 | 1431 | { |
2a7acb0a KM |
1432 | register struct vnode *vp, **vpp = ap->a_vpp; |
1433 | register struct inode *ip; | |
1434 | int len, error; | |
7188ac27 | 1435 | |
e6e1f8be KM |
1436 | if (error = ufs_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp, |
1437 | vpp, ap->a_cnp)) | |
7188ac27 | 1438 | return (error); |
2a7acb0a KM |
1439 | vp = *vpp; |
1440 | len = strlen(ap->a_target); | |
1441 | if (len < vp->v_mount->mnt_maxsymlinklen) { | |
1442 | ip = VTOI(vp); | |
1443 | bcopy(ap->a_target, (char *)ip->i_shortlink, len); | |
1444 | ip->i_size = len; | |
1445 | ip->i_flag |= IUPD|ICHG; | |
1446 | } else | |
1447 | error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, | |
1448 | UIO_SYSSPACE, IO_NODELOCKED, ap->a_cnp->cn_cred, (int *)0, | |
1449 | (struct proc *)0); | |
1450 | vput(vp); | |
7188ac27 KM |
1451 | return (error); |
1452 | } | |
1453 | ||
1454 | /* | |
d8ba9f9d KM |
1455 | * Vnode op for reading directories. |
1456 | * | |
1457 | * The routine below assumes that the on-disk format of a directory | |
1458 | * is the same as that defined by <sys/dirent.h>. If the on-disk | |
1459 | * format changes, then it will be necessary to do a conversion | |
1460 | * from the on-disk format that read returns to the format defined | |
1461 | * by <sys/dirent.h>. | |
7188ac27 | 1462 | */ |
031fd966 | 1463 | int |
e6e1f8be | 1464 | ufs_readdir(ap) |
69021bc5 KM |
1465 | struct vop_readdir_args /* { |
1466 | struct vnode *a_vp; | |
1467 | struct uio *a_uio; | |
1468 | struct ucred *a_cred; | |
1469 | } */ *ap; | |
88a7a62a | 1470 | { |
e6e1f8be | 1471 | register struct uio *uio = ap->a_uio; |
86cdabf6 | 1472 | int count, lost, error; |
88a7a62a | 1473 | |
e6e1f8be | 1474 | count = uio->uio_resid; |
7188ac27 | 1475 | count &= ~(DIRBLKSIZ - 1); |
e6e1f8be KM |
1476 | lost = uio->uio_resid - count; |
1477 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1478 | return (EINVAL); |
e6e1f8be KM |
1479 | uio->uio_resid = count; |
1480 | uio->uio_iov->iov_len = count; | |
86fb5449 KM |
1481 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1482 | if (ap->a_vp->v_mount->mnt_maxsymlinklen > 0) { | |
1483 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1484 | } else { | |
1485 | struct dirent *dp, *edp; | |
1486 | struct uio auio; | |
1487 | struct iovec aiov; | |
1488 | caddr_t dirbuf; | |
1489 | int readcnt; | |
1490 | u_char tmp; | |
1491 | ||
1492 | auio = *uio; | |
1493 | auio.uio_iov = &aiov; | |
1494 | auio.uio_iovcnt = 1; | |
1495 | auio.uio_segflg = UIO_SYSSPACE; | |
1496 | aiov.iov_len = count; | |
1497 | MALLOC(dirbuf, caddr_t, count, M_TEMP, M_WAITOK); | |
1498 | aiov.iov_base = dirbuf; | |
f8776d0c | 1499 | error = VOP_READ(ap->a_vp, &auio, 0, ap->a_cred); |
86fb5449 KM |
1500 | if (error == 0) { |
1501 | readcnt = count - auio.uio_resid; | |
1502 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1503 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
1504 | tmp = dp->d_namlen; | |
1505 | dp->d_namlen = dp->d_type; | |
1506 | dp->d_type = tmp; | |
1507 | if (dp->d_reclen > 0) { | |
1508 | dp = (struct dirent *) | |
1509 | ((char *)dp + dp->d_reclen); | |
1510 | } else { | |
1511 | error = EIO; | |
1512 | break; | |
1513 | } | |
1514 | } | |
1515 | if (dp >= edp) | |
1516 | error = uiomove(dirbuf, readcnt, uio); | |
1517 | } | |
1518 | FREE(dirbuf, M_TEMP); | |
1519 | } | |
1520 | # else | |
1521 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1522 | # endif | |
e6e1f8be | 1523 | uio->uio_resid += lost; |
7188ac27 KM |
1524 | return (error); |
1525 | } | |
1526 | ||
1527 | /* | |
1528 | * Return target name of a symbolic link | |
1529 | */ | |
031fd966 | 1530 | int |
e6e1f8be | 1531 | ufs_readlink(ap) |
69021bc5 KM |
1532 | struct vop_readlink_args /* { |
1533 | struct vnode *a_vp; | |
1534 | struct uio *a_uio; | |
1535 | struct ucred *a_cred; | |
1536 | } */ *ap; | |
7188ac27 | 1537 | { |
2a7acb0a KM |
1538 | register struct vnode *vp = ap->a_vp; |
1539 | register struct inode *ip = VTOI(vp); | |
3081d578 | 1540 | int isize; |
7188ac27 | 1541 | |
3081d578 KM |
1542 | isize = ip->i_size; |
1543 | if (isize < vp->v_mount->mnt_maxsymlinklen) { | |
1544 | uiomove((char *)ip->i_shortlink, isize, ap->a_uio); | |
2a7acb0a KM |
1545 | return (0); |
1546 | } | |
1547 | return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); | |
7188ac27 KM |
1548 | } |
1549 | ||
1550 | /* | |
1551 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
655da945 | 1552 | * done. If a buffer has been saved in anticipation of a CREATE, delete it. |
7188ac27 | 1553 | */ |
66955caf | 1554 | /* ARGSUSED */ |
031fd966 | 1555 | int |
e6e1f8be | 1556 | ufs_abortop(ap) |
69021bc5 KM |
1557 | struct vop_abortop_args /* { |
1558 | struct vnode *a_dvp; | |
1559 | struct componentname *a_cnp; | |
1560 | } */ *ap; | |
7188ac27 | 1561 | { |
e1b76915 JH |
1562 | if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) |
1563 | FREE(ap->a_cnp->cn_pnbuf, M_NAMEI); | |
66955caf | 1564 | return (0); |
7188ac27 KM |
1565 | } |
1566 | ||
1c3ebc10 | 1567 | /* |
8484f537 | 1568 | * Lock an inode. If its already locked, set the WANT bit and sleep. |
1c3ebc10 | 1569 | */ |
031fd966 | 1570 | int |
e6e1f8be | 1571 | ufs_lock(ap) |
69021bc5 KM |
1572 | struct vop_lock_args /* { |
1573 | struct vnode *a_vp; | |
1574 | } */ *ap; | |
7188ac27 | 1575 | { |
8484f537 KM |
1576 | register struct vnode *vp = ap->a_vp; |
1577 | register struct inode *ip; | |
1578 | struct proc *p = curproc; /* XXX */ | |
7188ac27 | 1579 | |
8484f537 KM |
1580 | start: |
1581 | while (vp->v_flag & VXLOCK) { | |
1582 | vp->v_flag |= VXWANT; | |
1583 | sleep((caddr_t)vp, PINOD); | |
1584 | } | |
1585 | if (vp->v_tag == VT_NON) | |
1586 | return (ENOENT); | |
1587 | ip = VTOI(vp); | |
1588 | if (ip->i_flag & ILOCKED) { | |
1589 | ip->i_flag |= IWANT; | |
1590 | #ifdef DIAGNOSTIC | |
1591 | if (p) { | |
1592 | if (p->p_pid == ip->i_lockholder) | |
1593 | panic("locking against myself"); | |
1594 | ip->i_lockwaiter = p->p_pid; | |
89f92c3c KM |
1595 | } else |
1596 | ip->i_lockwaiter = -1; | |
8484f537 KM |
1597 | #endif |
1598 | (void) sleep((caddr_t)ip, PINOD); | |
1599 | goto start; | |
1600 | } | |
1601 | #ifdef DIAGNOSTIC | |
1602 | ip->i_lockwaiter = 0; | |
89f92c3c KM |
1603 | if (ip->i_lockholder != 0) |
1604 | panic("lockholder (%d) != 0", ip->i_lockholder); | |
1605 | if (p && p->p_pid == 0) | |
1606 | printf("locking by process 0\n"); | |
8484f537 KM |
1607 | if (p) |
1608 | ip->i_lockholder = p->p_pid; | |
89f92c3c KM |
1609 | else |
1610 | ip->i_lockholder = -1; | |
8484f537 KM |
1611 | #endif |
1612 | ip->i_flag |= ILOCKED; | |
7188ac27 KM |
1613 | return (0); |
1614 | } | |
1615 | ||
1c3ebc10 | 1616 | /* |
8484f537 | 1617 | * Unlock an inode. If WANT bit is on, wakeup. |
1c3ebc10 | 1618 | */ |
89f92c3c | 1619 | int lockcount = 90; |
031fd966 | 1620 | int |
e6e1f8be | 1621 | ufs_unlock(ap) |
69021bc5 KM |
1622 | struct vop_unlock_args /* { |
1623 | struct vnode *a_vp; | |
1624 | } */ *ap; | |
7188ac27 | 1625 | { |
e1b76915 | 1626 | register struct inode *ip = VTOI(ap->a_vp); |
89f92c3c | 1627 | struct proc *p = curproc; /* XXX */ |
7188ac27 | 1628 | |
89f92c3c | 1629 | #ifdef DIAGNOSTIC |
8484f537 KM |
1630 | if ((ip->i_flag & ILOCKED) == 0) { |
1631 | vprint("ufs_unlock: unlocked inode", ap->a_vp); | |
7188ac27 | 1632 | panic("ufs_unlock NOT LOCKED"); |
8484f537 | 1633 | } |
89f92c3c KM |
1634 | if (p && p->p_pid != ip->i_lockholder && p->p_pid > -1 && |
1635 | ip->i_lockholder > -1 && lockcount++ < 100) | |
1636 | panic("unlocker (%d) != lock holder (%d)", | |
1637 | p->p_pid, ip->i_lockholder); | |
8484f537 KM |
1638 | ip->i_lockholder = 0; |
1639 | #endif | |
1640 | ip->i_flag &= ~ILOCKED; | |
1641 | if (ip->i_flag & IWANT) { | |
1642 | ip->i_flag &= ~IWANT; | |
1643 | wakeup((caddr_t)ip); | |
1644 | } | |
7188ac27 KM |
1645 | return (0); |
1646 | } | |
1647 | ||
1c3ebc10 KM |
1648 | /* |
1649 | * Check for a locked inode. | |
1650 | */ | |
031fd966 | 1651 | int |
e6e1f8be | 1652 | ufs_islocked(ap) |
69021bc5 KM |
1653 | struct vop_islocked_args /* { |
1654 | struct vnode *a_vp; | |
1655 | } */ *ap; | |
1c3ebc10 KM |
1656 | { |
1657 | ||
e1b76915 | 1658 | if (VTOI(ap->a_vp)->i_flag & ILOCKED) |
1c3ebc10 KM |
1659 | return (1); |
1660 | return (0); | |
1661 | } | |
1662 | ||
88a7a62a | 1663 | /* |
4f1ff475 KM |
1664 | * Calculate the logical to physical mapping if not done already, |
1665 | * then call the device strategy routine. | |
88a7a62a | 1666 | */ |
049ad674 | 1667 | int checkblk = 0; |
031fd966 | 1668 | int |
e6e1f8be | 1669 | ufs_strategy(ap) |
69021bc5 KM |
1670 | struct vop_strategy_args /* { |
1671 | struct buf *a_bp; | |
1672 | } */ *ap; | |
88a7a62a | 1673 | { |
e6e1f8be KM |
1674 | register struct buf *bp = ap->a_bp; |
1675 | register struct vnode *vp = bp->b_vp; | |
031fd966 | 1676 | register struct inode *ip; |
049ad674 | 1677 | daddr_t blkno; |
e16fa59e KM |
1678 | int error; |
1679 | ||
e6e1f8be KM |
1680 | ip = VTOI(vp); |
1681 | if (vp->v_type == VBLK || vp->v_type == VCHR) | |
e16fa59e | 1682 | panic("ufs_strategy: spec"); |
049ad674 KM |
1683 | if ((checkblk && (long)bp->b_lblkno >= 0 && |
1684 | (bp->b_flags & B_XXX) == 0) || | |
1685 | bp->b_blkno == bp->b_lblkno) { | |
1686 | if (error = VOP_BMAP(vp, bp->b_lblkno, NULL, &blkno, NULL)) { | |
e6e1f8be KM |
1687 | bp->b_error = error; |
1688 | bp->b_flags |= B_ERROR; | |
1689 | biodone(bp); | |
e16fa59e | 1690 | return (error); |
dd1d1daf | 1691 | } |
049ad674 KM |
1692 | if (bp->b_blkno != bp->b_lblkno && bp->b_blkno != blkno && |
1693 | !((bp->b_flags & B_READ) && (long)blkno == -1)) | |
1694 | panic("ufs_strategy: bad blkno %d != %d", bp->b_blkno, | |
1695 | blkno); | |
1696 | /* If this is a clustered block, check sub-blocks as well */ | |
1697 | if (bp->b_saveaddr) { | |
1698 | struct buf *tbp; | |
1699 | struct cluster_save *b_save = bp->b_saveaddr; | |
1700 | int i; | |
1701 | daddr_t bn; | |
1702 | for (i = 0; i < b_save->bs_nchildren; i++) { | |
1703 | tbp = b_save->bs_children[i]; | |
1704 | if ((tbp->b_flags & B_XXX) == 0 && | |
1705 | !VOP_BMAP(vp, tbp->b_lblkno, NULL, | |
1706 | &bn, NULL) && tbp->b_blkno != bn) | |
1707 | panic("ufs_strategy: bad bno %d != %d", | |
1708 | bp->b_blkno, blkno); | |
1709 | } | |
1710 | } | |
1711 | bp->b_blkno = blkno; | |
e6e1f8be | 1712 | if ((long)bp->b_blkno == -1) |
049ad674 KM |
1713 | if ((bp->b_flags & B_READ) == 0) |
1714 | panic("ufs_startegy: write unallocated block"); | |
1715 | else | |
1716 | clrbuf(bp); | |
e16fa59e | 1717 | } |
049ad674 | 1718 | bp->b_flags &=~ B_XXX; |
e6e1f8be KM |
1719 | if ((long)bp->b_blkno == -1) { |
1720 | biodone(bp); | |
e16fa59e | 1721 | return (0); |
20aa076b | 1722 | } |
e16fa59e | 1723 | vp = ip->i_devvp; |
e6e1f8be | 1724 | bp->b_dev = vp->v_rdev; |
ea460dfe | 1725 | VOCALL (vp->v_op, VOFFSET(vop_strategy), ap); |
7188ac27 KM |
1726 | return (0); |
1727 | } | |
88a7a62a | 1728 | |
e16fa59e KM |
1729 | /* |
1730 | * Print out the contents of an inode. | |
1731 | */ | |
031fd966 | 1732 | int |
e6e1f8be | 1733 | ufs_print(ap) |
69021bc5 KM |
1734 | struct vop_print_args /* { |
1735 | struct vnode *a_vp; | |
1736 | } */ *ap; | |
e16fa59e | 1737 | { |
e6e1f8be KM |
1738 | register struct vnode *vp = ap->a_vp; |
1739 | register struct inode *ip = VTOI(vp); | |
e16fa59e | 1740 | |
a8f829ed KM |
1741 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1742 | major(ip->i_dev), minor(ip->i_dev)); | |
1743 | #ifdef FIFO | |
e6e1f8be KM |
1744 | if (vp->v_type == VFIFO) |
1745 | fifo_printinfo(vp); | |
a8f829ed KM |
1746 | #endif /* FIFO */ |
1747 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
4a8fb1bb | 1748 | if (ip->i_lockholder == 0) |
031fd966 | 1749 | return (0); |
4a8fb1bb KM |
1750 | printf("\towner pid %d", ip->i_lockholder); |
1751 | if (ip->i_lockwaiter) | |
1752 | printf(" waiting pid %d", ip->i_lockwaiter); | |
96bae3e0 | 1753 | printf("\n"); |
031fd966 | 1754 | return (0); |
e16fa59e KM |
1755 | } |
1756 | ||
24a31b70 KM |
1757 | /* |
1758 | * Read wrapper for special devices. | |
1759 | */ | |
031fd966 | 1760 | int |
e6e1f8be | 1761 | ufsspec_read(ap) |
69021bc5 KM |
1762 | struct vop_read_args /* { |
1763 | struct vnode *a_vp; | |
1764 | struct uio *a_uio; | |
1765 | int a_ioflag; | |
1766 | struct ucred *a_cred; | |
1767 | } */ *ap; | |
24a31b70 KM |
1768 | { |
1769 | ||
1770 | /* | |
1771 | * Set access flag. | |
1772 | */ | |
e1b76915 | 1773 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1774 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap)); |
24a31b70 KM |
1775 | } |
1776 | ||
1777 | /* | |
1778 | * Write wrapper for special devices. | |
1779 | */ | |
031fd966 | 1780 | int |
e6e1f8be | 1781 | ufsspec_write(ap) |
69021bc5 KM |
1782 | struct vop_write_args /* { |
1783 | struct vnode *a_vp; | |
1784 | struct uio *a_uio; | |
1785 | int a_ioflag; | |
1786 | struct ucred *a_cred; | |
1787 | } */ *ap; | |
24a31b70 KM |
1788 | { |
1789 | ||
1790 | /* | |
1791 | * Set update and change flags. | |
1792 | */ | |
e1b76915 | 1793 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1794 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap)); |
24a31b70 KM |
1795 | } |
1796 | ||
1797 | /* | |
1798 | * Close wrapper for special devices. | |
1799 | * | |
1800 | * Update the times on the inode then do device close. | |
1801 | */ | |
031fd966 | 1802 | int |
e6e1f8be | 1803 | ufsspec_close(ap) |
69021bc5 KM |
1804 | struct vop_close_args /* { |
1805 | struct vnode *a_vp; | |
1806 | int a_fflag; | |
1807 | struct ucred *a_cred; | |
1808 | struct proc *a_p; | |
1809 | } */ *ap; | |
24a31b70 | 1810 | { |
e1b76915 | 1811 | register struct inode *ip = VTOI(ap->a_vp); |
24a31b70 | 1812 | |
e1b76915 | 1813 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 | 1814 | ITIMES(ip, &time, &time); |
ea460dfe | 1815 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); |
24a31b70 KM |
1816 | } |
1817 | ||
d1c43d7f KM |
1818 | #ifdef FIFO |
1819 | /* | |
1820 | * Read wrapper for fifo's | |
1821 | */ | |
031fd966 | 1822 | int |
e6e1f8be | 1823 | ufsfifo_read(ap) |
69021bc5 KM |
1824 | struct vop_read_args /* { |
1825 | struct vnode *a_vp; | |
1826 | struct uio *a_uio; | |
1827 | int a_ioflag; | |
1828 | struct ucred *a_cred; | |
1829 | } */ *ap; | |
d1c43d7f | 1830 | { |
ea460dfe | 1831 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1832 | |
1833 | /* | |
1834 | * Set access flag. | |
1835 | */ | |
e1b76915 | 1836 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1837 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap)); |
d1c43d7f KM |
1838 | } |
1839 | ||
1840 | /* | |
1841 | * Write wrapper for fifo's. | |
1842 | */ | |
031fd966 | 1843 | int |
e6e1f8be | 1844 | ufsfifo_write(ap) |
69021bc5 KM |
1845 | struct vop_write_args /* { |
1846 | struct vnode *a_vp; | |
1847 | struct uio *a_uio; | |
1848 | int a_ioflag; | |
1849 | struct ucred *a_cred; | |
1850 | } */ *ap; | |
d1c43d7f | 1851 | { |
ea460dfe | 1852 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1853 | |
1854 | /* | |
1855 | * Set update and change flags. | |
1856 | */ | |
e1b76915 | 1857 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1858 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap)); |
d1c43d7f KM |
1859 | } |
1860 | ||
1861 | /* | |
1862 | * Close wrapper for fifo's. | |
1863 | * | |
1864 | * Update the times on the inode then do device close. | |
1865 | */ | |
e6e1f8be | 1866 | ufsfifo_close(ap) |
69021bc5 KM |
1867 | struct vop_close_args /* { |
1868 | struct vnode *a_vp; | |
1869 | int a_fflag; | |
1870 | struct ucred *a_cred; | |
1871 | struct proc *a_p; | |
1872 | } */ *ap; | |
d1c43d7f | 1873 | { |
ea460dfe | 1874 | extern int (**fifo_vnodeop_p)(); |
e1b76915 | 1875 | register struct inode *ip = VTOI(ap->a_vp); |
d1c43d7f | 1876 | |
e1b76915 | 1877 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
d1c43d7f | 1878 | ITIMES(ip, &time, &time); |
ea460dfe | 1879 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); |
d1c43d7f KM |
1880 | } |
1881 | #endif /* FIFO */ | |
1882 | ||
0b0bf936 KM |
1883 | /* |
1884 | * Advisory record locking support | |
1885 | */ | |
031fd966 | 1886 | int |
e6e1f8be | 1887 | ufs_advlock(ap) |
69021bc5 KM |
1888 | struct vop_advlock_args /* { |
1889 | struct vnode *a_vp; | |
1890 | caddr_t a_id; | |
1891 | int a_op; | |
1892 | struct flock *a_fl; | |
1893 | int a_flags; | |
1894 | } */ *ap; | |
0b0bf936 | 1895 | { |
e1b76915 | 1896 | register struct inode *ip = VTOI(ap->a_vp); |
e6e1f8be | 1897 | register struct flock *fl = ap->a_fl; |
0b0bf936 KM |
1898 | register struct lockf *lock; |
1899 | off_t start, end; | |
1900 | int error; | |
1901 | ||
1902 | /* | |
1903 | * Avoid the common case of unlocking when inode has no locks. | |
1904 | */ | |
1905 | if (ip->i_lockf == (struct lockf *)0) { | |
e1b76915 | 1906 | if (ap->a_op != F_SETLK) { |
e6e1f8be | 1907 | fl->l_type = F_UNLCK; |
0b0bf936 KM |
1908 | return (0); |
1909 | } | |
1910 | } | |
1911 | /* | |
1912 | * Convert the flock structure into a start and end. | |
1913 | */ | |
e6e1f8be | 1914 | switch (fl->l_whence) { |
0b0bf936 KM |
1915 | |
1916 | case SEEK_SET: | |
1917 | case SEEK_CUR: | |
1918 | /* | |
1919 | * Caller is responsible for adding any necessary offset | |
1920 | * when SEEK_CUR is used. | |
1921 | */ | |
e6e1f8be | 1922 | start = fl->l_start; |
0b0bf936 KM |
1923 | break; |
1924 | ||
1925 | case SEEK_END: | |
e6e1f8be | 1926 | start = ip->i_size + fl->l_start; |
0b0bf936 KM |
1927 | break; |
1928 | ||
1929 | default: | |
1930 | return (EINVAL); | |
1931 | } | |
1932 | if (start < 0) | |
1933 | return (EINVAL); | |
e6e1f8be | 1934 | if (fl->l_len == 0) |
0b0bf936 KM |
1935 | end = -1; |
1936 | else | |
e6e1f8be | 1937 | end = start + fl->l_len - 1; |
0b0bf936 KM |
1938 | /* |
1939 | * Create the lockf structure | |
1940 | */ | |
1941 | MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK); | |
1942 | lock->lf_start = start; | |
1943 | lock->lf_end = end; | |
e1b76915 | 1944 | lock->lf_id = ap->a_id; |
0b0bf936 | 1945 | lock->lf_inode = ip; |
e6e1f8be | 1946 | lock->lf_type = fl->l_type; |
0b0bf936 KM |
1947 | lock->lf_next = (struct lockf *)0; |
1948 | lock->lf_block = (struct lockf *)0; | |
e1b76915 | 1949 | lock->lf_flags = ap->a_flags; |
0b0bf936 KM |
1950 | /* |
1951 | * Do the requested operation. | |
1952 | */ | |
e1b76915 | 1953 | switch(ap->a_op) { |
0b0bf936 | 1954 | case F_SETLK: |
b9fc1077 | 1955 | return (lf_setlock(lock)); |
0b0bf936 KM |
1956 | |
1957 | case F_UNLCK: | |
b9fc1077 KM |
1958 | error = lf_clearlock(lock); |
1959 | FREE(lock, M_LOCKF); | |
1960 | return (error); | |
0b0bf936 KM |
1961 | |
1962 | case F_GETLK: | |
e6e1f8be | 1963 | error = lf_getlock(lock, fl); |
b9fc1077 KM |
1964 | FREE(lock, M_LOCKF); |
1965 | return (error); | |
0b0bf936 KM |
1966 | |
1967 | default: | |
1968 | free(lock, M_LOCKF); | |
1969 | return (EINVAL); | |
1970 | } | |
1971 | /* NOTREACHED */ | |
1972 | } | |
5b169cb7 KM |
1973 | |
1974 | /* | |
031fd966 KB |
1975 | * Initialize the vnode associated with a new inode, handle aliased |
1976 | * vnodes. | |
5b169cb7 | 1977 | */ |
031fd966 | 1978 | int |
c59af027 | 1979 | ufs_vinit(mntp, specops, fifoops, vpp) |
031fd966 | 1980 | struct mount *mntp; |
1d52469b JH |
1981 | int (**specops)(); |
1982 | int (**fifoops)(); | |
031fd966 KB |
1983 | struct vnode **vpp; |
1984 | { | |
cda1e3e8 | 1985 | struct inode *ip; |
031fd966 KB |
1986 | struct vnode *vp, *nvp; |
1987 | ||
1988 | vp = *vpp; | |
1989 | ip = VTOI(vp); | |
1990 | switch(vp->v_type = IFTOVT(ip->i_mode)) { | |
1991 | case VCHR: | |
1992 | case VBLK: | |
c59af027 | 1993 | vp->v_op = specops; |
031fd966 | 1994 | if (nvp = checkalias(vp, ip->i_rdev, mntp)) { |
c59af027 | 1995 | /* |
4a8fb1bb | 1996 | * Discard unneeded vnode, but save its inode. |
c59af027 | 1997 | */ |
cda1e3e8 | 1998 | ufs_ihashrem(ip); |
8484f537 | 1999 | VOP_UNLOCK(vp); |
4a8fb1bb KM |
2000 | nvp->v_data = vp->v_data; |
2001 | vp->v_data = NULL; | |
9342689a | 2002 | vp->v_op = spec_vnodeop_p; |
4a8fb1bb KM |
2003 | vrele(vp); |
2004 | vgone(vp); | |
c59af027 | 2005 | /* |
4a8fb1bb | 2006 | * Reinitialize aliased inode. |
c59af027 | 2007 | */ |
4a8fb1bb KM |
2008 | vp = nvp; |
2009 | ip->i_vnode = vp; | |
2010 | ufs_ihashins(ip); | |
031fd966 KB |
2011 | } |
2012 | break; | |
2013 | case VFIFO: | |
2014 | #ifdef FIFO | |
c59af027 | 2015 | vp->v_op = fifoops; |
031fd966 KB |
2016 | break; |
2017 | #else | |
2018 | return (EOPNOTSUPP); | |
2019 | #endif | |
2020 | } | |
031fd966 KB |
2021 | if (ip->i_number == ROOTINO) |
2022 | vp->v_flag |= VROOT; | |
1a3cb193 KM |
2023 | /* |
2024 | * Initialize modrev times | |
2025 | */ | |
2026 | SETHIGH(ip->i_modrev, mono_time.tv_sec); | |
2027 | SETLOW(ip->i_modrev, mono_time.tv_usec * 4294); | |
031fd966 KB |
2028 | *vpp = vp; |
2029 | return (0); | |
2030 | } | |
5b169cb7 | 2031 | |
031fd966 KB |
2032 | /* |
2033 | * Allocate a new inode. | |
2034 | */ | |
2035 | int | |
6e57e9ff | 2036 | ufs_makeinode(mode, dvp, vpp, cnp) |
031fd966 | 2037 | int mode; |
cfef4373 | 2038 | struct vnode *dvp; |
c59af027 | 2039 | struct vnode **vpp; |
cfef4373 | 2040 | struct componentname *cnp; |
031fd966 KB |
2041 | { |
2042 | register struct inode *ip, *pdir; | |
fa4f99ac | 2043 | struct timeval tv; |
c59af027 | 2044 | struct vnode *tvp; |
031fd966 KB |
2045 | int error; |
2046 | ||
cfef4373 | 2047 | pdir = VTOI(dvp); |
38285224 | 2048 | #ifdef DIAGNOSTIC |
cfef4373 | 2049 | if ((cnp->cn_flags & HASBUF) == 0) |
031fd966 KB |
2050 | panic("ufs_makeinode: no name"); |
2051 | #endif | |
c59af027 | 2052 | *vpp = NULL; |
031fd966 KB |
2053 | if ((mode & IFMT) == 0) |
2054 | mode |= IFREG; | |
2055 | ||
cfef4373 JH |
2056 | if (error = VOP_VALLOC(dvp, mode, cnp->cn_cred, &tvp)) { |
2057 | free(cnp->cn_pnbuf, M_NAMEI); | |
8484f537 | 2058 | vput(dvp); |
031fd966 KB |
2059 | return (error); |
2060 | } | |
c59af027 | 2061 | ip = VTOI(tvp); |
cfef4373 | 2062 | ip->i_uid = cnp->cn_cred->cr_uid; |
031fd966 KB |
2063 | ip->i_gid = pdir->i_gid; |
2064 | #ifdef QUOTA | |
2065 | if ((error = getinoquota(ip)) || | |
cfef4373 JH |
2066 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
2067 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 2068 | VOP_VFREE(tvp, ip->i_number, mode); |
8484f537 KM |
2069 | vput(tvp); |
2070 | vput(dvp); | |
031fd966 KB |
2071 | return (error); |
2072 | } | |
2073 | #endif | |
2074 | ip->i_flag |= IACC|IUPD|ICHG; | |
2075 | ip->i_mode = mode; | |
c59af027 | 2076 | tvp->v_type = IFTOVT(mode); /* Rest init'd in iget() */ |
031fd966 | 2077 | ip->i_nlink = 1; |
cfef4373 JH |
2078 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) && |
2079 | suser(cnp->cn_cred, NULL)) | |
031fd966 KB |
2080 | ip->i_mode &= ~ISGID; |
2081 | ||
2082 | /* | |
2083 | * Make sure inode goes to disk before directory entry. | |
2084 | */ | |
fa4f99ac CT |
2085 | tv = time; |
2086 | if (error = VOP_UPDATE(tvp, &tv, &tv, 1)) | |
031fd966 | 2087 | goto bad; |
cfef4373 | 2088 | if (error = ufs_direnter(ip, dvp, cnp)) |
031fd966 | 2089 | goto bad; |
cfef4373 JH |
2090 | if ((cnp->cn_flags & SAVESTART) == 0) |
2091 | FREE(cnp->cn_pnbuf, M_NAMEI); | |
8484f537 | 2092 | vput(dvp); |
c59af027 | 2093 | *vpp = tvp; |
031fd966 KB |
2094 | return (0); |
2095 | ||
2096 | bad: | |
2097 | /* | |
2098 | * Write error occurred trying to update the inode | |
2099 | * or the directory so must deallocate the inode. | |
2100 | */ | |
cfef4373 | 2101 | free(cnp->cn_pnbuf, M_NAMEI); |
8484f537 | 2102 | vput(dvp); |
031fd966 KB |
2103 | ip->i_nlink = 0; |
2104 | ip->i_flag |= ICHG; | |
8484f537 | 2105 | vput(tvp); |
031fd966 KB |
2106 | return (error); |
2107 | } |