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 | * |
e3b1aef5 | 7 | * @(#)ufs_vnops.c 7.118 (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) { | |
359e7bb4 | 308 | if ((ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) && |
4784d59e KM |
309 | securelevel > 0) |
310 | return (EPERM); | |
311 | ip->i_flags = vap->va_flags; | |
312 | } else { | |
359e7bb4 | 313 | if (ip->i_flags & (SF_IMMUTABLE | SF_APPEND)) |
4784d59e KM |
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 | 338 | if (cred->cr_uid != ip->i_uid && |
f8ee9a49 | 339 | (error = suser(cred, &p->p_acflag)) && |
bf9cfa64 | 340 | ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || |
f8ee9a49 | 341 | (error = VOP_ACCESS(vp, VWRITE, cred, p)))) |
de412887 | 342 | return (error); |
7e11a0c9 | 343 | if (vap->va_atime.ts_sec != VNOVAL) |
7188ac27 | 344 | ip->i_flag |= IACC; |
7e11a0c9 | 345 | if (vap->va_mtime.ts_sec != VNOVAL) |
2ee0b0d9 | 346 | ip->i_flag |= IUPD | ICHG; |
7e11a0c9 KM |
347 | atimeval.tv_sec = vap->va_atime.ts_sec; |
348 | atimeval.tv_usec = vap->va_atime.ts_nsec / 1000; | |
349 | mtimeval.tv_sec = vap->va_mtime.ts_sec; | |
350 | mtimeval.tv_usec = vap->va_mtime.ts_nsec / 1000; | |
351 | if (error = VOP_UPDATE(vp, &atimeval, &mtimeval, 1)) | |
7188ac27 | 352 | return (error); |
5485e062 | 353 | } |
031fd966 | 354 | error = 0; |
e6e1f8be KM |
355 | if (vap->va_mode != (mode_t)VNOVAL) |
356 | error = ufs_chmod(vp, (int)vap->va_mode, cred, p); | |
7188ac27 | 357 | return (error); |
528f664c SL |
358 | } |
359 | ||
4f083fd7 SL |
360 | /* |
361 | * Change the mode on a file. | |
362 | * Inode must be locked before calling. | |
363 | */ | |
ca3e8b68 | 364 | static int |
8e232de3 | 365 | ufs_chmod(vp, mode, cred, p) |
7188ac27 | 366 | register struct vnode *vp; |
528f664c | 367 | register int mode; |
8e232de3 | 368 | register struct ucred *cred; |
c6f5111d | 369 | struct proc *p; |
528f664c | 370 | { |
7188ac27 | 371 | register struct inode *ip = VTOI(vp); |
de412887 | 372 | int error; |
197da11b | 373 | |
de412887 | 374 | if (cred->cr_uid != ip->i_uid && |
c6f5111d | 375 | (error = suser(cred, &p->p_acflag))) |
de412887 | 376 | return (error); |
7188ac27 | 377 | if (cred->cr_uid) { |
e57b6138 | 378 | if (vp->v_type != VDIR && (mode & ISVTX)) |
39b5be4c | 379 | return (EFTYPE); |
e57b6138 | 380 | if (!groupmember(ip->i_gid, cred) && (mode & ISGID)) |
39b5be4c | 381 | return (EPERM); |
f94ceb3b | 382 | } |
39b5be4c | 383 | ip->i_mode &= ~07777; |
7188ac27 | 384 | ip->i_mode |= mode & 07777; |
3e78e260 | 385 | ip->i_flag |= ICHG; |
7188ac27 | 386 | if ((vp->v_flag & VTEXT) && (ip->i_mode & ISVTX) == 0) |
8986c97c | 387 | (void) vnode_pager_uncache(vp); |
47af7174 | 388 | return (0); |
5485e062 BJ |
389 | } |
390 | ||
528f664c SL |
391 | /* |
392 | * Perform chown operation on inode ip; | |
393 | * inode must be locked prior to call. | |
394 | */ | |
ca3e8b68 | 395 | static int |
8e232de3 | 396 | ufs_chown(vp, uid, gid, cred, p) |
7188ac27 | 397 | register struct vnode *vp; |
38285224 KM |
398 | uid_t uid; |
399 | gid_t gid; | |
8e232de3 | 400 | struct ucred *cred; |
c6f5111d | 401 | struct proc *p; |
528f664c | 402 | { |
7188ac27 | 403 | register struct inode *ip = VTOI(vp); |
4b61628b KM |
404 | uid_t ouid; |
405 | gid_t ogid; | |
406 | int error = 0; | |
528f664c | 407 | #ifdef QUOTA |
4b61628b KM |
408 | register int i; |
409 | long change; | |
bb1b75f4 | 410 | #endif |
528f664c | 411 | |
38285224 | 412 | if (uid == (uid_t)VNOVAL) |
bb1b75f4 | 413 | uid = ip->i_uid; |
38285224 | 414 | if (gid == (gid_t)VNOVAL) |
bb1b75f4 | 415 | gid = ip->i_gid; |
18b0bce6 KB |
416 | /* |
417 | * If we don't own the file, are trying to change the owner | |
418 | * of the file, or are not a member of the target group, | |
419 | * the caller must be superuser or the call fails. | |
420 | */ | |
7188ac27 KM |
421 | if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid || |
422 | !groupmember((gid_t)gid, cred)) && | |
c6f5111d | 423 | (error = suser(cred, &p->p_acflag))) |
7188ac27 | 424 | return (error); |
4b61628b KM |
425 | ouid = ip->i_uid; |
426 | ogid = ip->i_gid; | |
bb1b75f4 | 427 | #ifdef QUOTA |
4b61628b KM |
428 | if (error = getinoquota(ip)) |
429 | return (error); | |
430 | if (ouid == uid) { | |
431 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
432 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
433 | } | |
434 | if (ogid == gid) { | |
435 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
436 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
437 | } | |
438 | change = ip->i_blocks; | |
439 | (void) chkdq(ip, -change, cred, CHOWN); | |
440 | (void) chkiq(ip, -1, cred, CHOWN); | |
441 | for (i = 0; i < MAXQUOTAS; i++) { | |
442 | dqrele(vp, ip->i_dquot[i]); | |
443 | ip->i_dquot[i] = NODQUOT; | |
444 | } | |
f94ceb3b | 445 | #endif |
bb1b75f4 SL |
446 | ip->i_uid = uid; |
447 | ip->i_gid = gid; | |
528f664c | 448 | #ifdef QUOTA |
4b61628b KM |
449 | if ((error = getinoquota(ip)) == 0) { |
450 | if (ouid == uid) { | |
451 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
452 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
453 | } | |
454 | if (ogid == gid) { | |
455 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
456 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
457 | } | |
458 | if ((error = chkdq(ip, change, cred, CHOWN)) == 0) { | |
459 | if ((error = chkiq(ip, 1, cred, CHOWN)) == 0) | |
722a9b31 | 460 | goto good; |
4b61628b KM |
461 | else |
462 | (void) chkdq(ip, -change, cred, CHOWN|FORCE); | |
463 | } | |
464 | for (i = 0; i < MAXQUOTAS; i++) { | |
465 | dqrele(vp, ip->i_dquot[i]); | |
466 | ip->i_dquot[i] = NODQUOT; | |
467 | } | |
468 | } | |
469 | ip->i_uid = ouid; | |
470 | ip->i_gid = ogid; | |
471 | if (getinoquota(ip) == 0) { | |
472 | if (ouid == uid) { | |
473 | dqrele(vp, ip->i_dquot[USRQUOTA]); | |
474 | ip->i_dquot[USRQUOTA] = NODQUOT; | |
475 | } | |
476 | if (ogid == gid) { | |
477 | dqrele(vp, ip->i_dquot[GRPQUOTA]); | |
478 | ip->i_dquot[GRPQUOTA] = NODQUOT; | |
479 | } | |
722a9b31 KM |
480 | (void) chkdq(ip, change, cred, FORCE|CHOWN); |
481 | (void) chkiq(ip, 1, cred, FORCE|CHOWN); | |
6cb69bbe | 482 | (void) getinoquota(ip); |
4b61628b | 483 | } |
6cb69bbe | 484 | return (error); |
722a9b31 | 485 | good: |
6cb69bbe KM |
486 | if (getinoquota(ip)) |
487 | panic("chown: lost quota"); | |
488 | #endif /* QUOTA */ | |
4b61628b KM |
489 | if (ouid != uid || ogid != gid) |
490 | ip->i_flag |= ICHG; | |
491 | if (ouid != uid && cred->cr_uid != 0) | |
492 | ip->i_mode &= ~ISUID; | |
493 | if (ogid != gid && cred->cr_uid != 0) | |
494 | ip->i_mode &= ~ISGID; | |
495 | return (0); | |
d67a03eb BJ |
496 | } |
497 | ||
7188ac27 | 498 | /* ARGSUSED */ |
031fd966 | 499 | int |
e6e1f8be | 500 | ufs_ioctl(ap) |
69021bc5 KM |
501 | struct vop_ioctl_args /* { |
502 | struct vnode *a_vp; | |
503 | int a_command; | |
504 | caddr_t a_data; | |
505 | int a_fflag; | |
506 | struct ucred *a_cred; | |
507 | struct proc *a_p; | |
508 | } */ *ap; | |
bb1b75f4 | 509 | { |
bb1b75f4 | 510 | |
7188ac27 KM |
511 | return (ENOTTY); |
512 | } | |
513 | ||
514 | /* ARGSUSED */ | |
031fd966 | 515 | int |
e6e1f8be | 516 | ufs_select(ap) |
69021bc5 KM |
517 | struct vop_select_args /* { |
518 | struct vnode *a_vp; | |
519 | int a_which; | |
520 | int a_fflags; | |
521 | struct ucred *a_cred; | |
522 | struct proc *a_p; | |
523 | } */ *ap; | |
7188ac27 KM |
524 | { |
525 | ||
5b169cb7 KM |
526 | /* |
527 | * We should really check to see if I/O is possible. | |
528 | */ | |
529 | return (1); | |
bb1b75f4 | 530 | } |
d67a03eb | 531 | |
4f083fd7 | 532 | /* |
7188ac27 KM |
533 | * Mmap a file |
534 | * | |
535 | * NB Currently unsupported. | |
4f083fd7 | 536 | */ |
7188ac27 | 537 | /* ARGSUSED */ |
031fd966 | 538 | int |
e6e1f8be | 539 | ufs_mmap(ap) |
69021bc5 KM |
540 | struct vop_mmap_args /* { |
541 | struct vnode *a_vp; | |
542 | int a_fflags; | |
543 | struct ucred *a_cred; | |
544 | struct proc *a_p; | |
545 | } */ *ap; | |
d67a03eb | 546 | { |
d67a03eb | 547 | |
7188ac27 | 548 | return (EINVAL); |
d67a03eb | 549 | } |
64d3a787 | 550 | |
4f083fd7 | 551 | /* |
7188ac27 KM |
552 | * Seek on a file |
553 | * | |
554 | * Nothing to do, so just return. | |
4f083fd7 | 555 | */ |
7188ac27 | 556 | /* ARGSUSED */ |
031fd966 | 557 | int |
e6e1f8be | 558 | ufs_seek(ap) |
69021bc5 KM |
559 | struct vop_seek_args /* { |
560 | struct vnode *a_vp; | |
561 | off_t a_oldoff; | |
562 | off_t a_newoff; | |
563 | struct ucred *a_cred; | |
564 | } */ *ap; | |
528f664c | 565 | { |
7188ac27 KM |
566 | |
567 | return (0); | |
568 | } | |
569 | ||
570 | /* | |
571 | * ufs remove | |
572 | * Hard to avoid races here, especially | |
573 | * in unlinking directories. | |
574 | */ | |
031fd966 | 575 | int |
e6e1f8be | 576 | ufs_remove(ap) |
69021bc5 KM |
577 | struct vop_remove_args /* { |
578 | struct vnode *a_dvp; | |
579 | struct vnode *a_vp; | |
580 | struct componentname *a_cnp; | |
581 | } */ *ap; | |
7188ac27 | 582 | { |
8484f537 KM |
583 | register struct inode *ip; |
584 | register struct vnode *vp = ap->a_vp; | |
585 | register struct vnode *dvp = ap->a_dvp; | |
7188ac27 KM |
586 | int error; |
587 | ||
8484f537 | 588 | ip = VTOI(vp); |
4784d59e KM |
589 | if ((ip->i_flags & (IMMUTABLE | APPEND)) || |
590 | (VTOI(dvp)->i_flags & APPEND)) { | |
591 | error = EPERM; | |
592 | goto out; | |
593 | } | |
594 | if ((error = ufs_dirremove(dvp, ap->a_cnp)) == 0) { | |
7188ac27 KM |
595 | ip->i_nlink--; |
596 | ip->i_flag |= ICHG; | |
528f664c | 597 | } |
4784d59e | 598 | out: |
8484f537 KM |
599 | if (dvp == vp) |
600 | vrele(vp); | |
7188ac27 | 601 | else |
8484f537 KM |
602 | vput(vp); |
603 | vput(dvp); | |
7188ac27 | 604 | return (error); |
4f083fd7 SL |
605 | } |
606 | ||
607 | /* | |
7188ac27 | 608 | * link vnode call |
4f083fd7 | 609 | */ |
031fd966 | 610 | int |
e6e1f8be | 611 | ufs_link(ap) |
69021bc5 KM |
612 | struct vop_link_args /* { |
613 | struct vnode *a_vp; | |
614 | struct vnode *a_tdvp; | |
615 | struct componentname *a_cnp; | |
616 | } */ *ap; | |
4f083fd7 | 617 | { |
e6e1f8be KM |
618 | register struct vnode *vp = ap->a_vp; |
619 | register struct vnode *tdvp = ap->a_tdvp; | |
620 | register struct componentname *cnp = ap->a_cnp; | |
031fd966 | 621 | register struct inode *ip; |
fa4f99ac | 622 | struct timeval tv; |
7188ac27 | 623 | int error; |
4f083fd7 | 624 | |
38285224 | 625 | #ifdef DIAGNOSTIC |
e6e1f8be | 626 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
627 | panic("ufs_link: no name"); |
628 | #endif | |
8484f537 KM |
629 | if (vp->v_mount != tdvp->v_mount) { |
630 | VOP_ABORTOP(vp, cnp); | |
631 | error = EXDEV; | |
632 | goto out2; | |
633 | } | |
634 | if (vp != tdvp && (error = VOP_LOCK(tdvp))) { | |
635 | VOP_ABORTOP(vp, cnp); | |
636 | goto out2; | |
637 | } | |
e6e1f8be | 638 | ip = VTOI(tdvp); |
38285224 | 639 | if ((nlink_t)ip->i_nlink >= LINK_MAX) { |
8484f537 KM |
640 | VOP_ABORTOP(vp, cnp); |
641 | error = EMLINK; | |
642 | goto out1; | |
655da945 | 643 | } |
4784d59e KM |
644 | if (ip->i_flags & (IMMUTABLE | APPEND)) { |
645 | VOP_ABORTOP(vp, cnp); | |
646 | error = EPERM; | |
647 | goto out1; | |
648 | } | |
7188ac27 KM |
649 | ip->i_nlink++; |
650 | ip->i_flag |= ICHG; | |
fa4f99ac CT |
651 | tv = time; |
652 | error = VOP_UPDATE(tdvp, &tv, &tv, 1); | |
7188ac27 | 653 | if (!error) |
e6e1f8be | 654 | error = ufs_direnter(ip, vp, cnp); |
7188ac27 KM |
655 | if (error) { |
656 | ip->i_nlink--; | |
82252d2b | 657 | ip->i_flag |= ICHG; |
7188ac27 | 658 | } |
8484f537 KM |
659 | FREE(cnp->cn_pnbuf, M_NAMEI); |
660 | out1: | |
661 | if (vp != tdvp) | |
662 | VOP_UNLOCK(tdvp); | |
663 | out2: | |
664 | vput(vp); | |
7188ac27 | 665 | return (error); |
528f664c SL |
666 | } |
667 | ||
cfef4373 JH |
668 | |
669 | ||
670 | /* | |
671 | * relookup - lookup a path name component | |
672 | * Used by lookup to re-aquire things. | |
673 | */ | |
674 | int | |
6e57e9ff | 675 | relookup(dvp, vpp, cnp) |
cfef4373 JH |
676 | struct vnode *dvp, **vpp; |
677 | struct componentname *cnp; | |
678 | { | |
cfef4373 JH |
679 | register struct vnode *dp = 0; /* the directory we are searching */ |
680 | struct vnode *tdp; /* saved dp */ | |
681 | struct mount *mp; /* mount table entry */ | |
682 | int docache; /* == 0 do not cache last component */ | |
683 | int wantparent; /* 1 => wantparent or lockparent flag */ | |
684 | int rdonly; /* lookup read-only flag bit */ | |
d36023e3 KM |
685 | char *cp; /* DEBUG: check name ptr/len */ |
686 | int newhash; /* DEBUG: check name hash */ | |
cfef4373 | 687 | int error = 0; |
cfef4373 JH |
688 | |
689 | /* | |
690 | * Setup: break out flag bits into variables. | |
691 | */ | |
692 | wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT); | |
693 | docache = (cnp->cn_flags & NOCACHE) ^ NOCACHE; | |
d7961b1d JH |
694 | if (cnp->cn_nameiop == DELETE || |
695 | (wantparent && cnp->cn_nameiop != CREATE)) | |
cfef4373 JH |
696 | docache = 0; |
697 | rdonly = cnp->cn_flags & RDONLY; | |
698 | cnp->cn_flags &= ~ISSYMLINK; | |
699 | dp = dvp; | |
700 | VOP_LOCK(dp); | |
701 | ||
702 | /* dirloop: */ | |
703 | /* | |
704 | * Search a new directory. | |
705 | * | |
706 | * The cn_hash value is for use by vfs_cache. | |
707 | * The last component of the filename is left accessible via | |
708 | * cnp->cn_nameptr for callers that need the name. Callers needing | |
709 | * the name set the SAVENAME flag. When done, they assume | |
710 | * responsibility for freeing the pathname buffer. | |
711 | */ | |
6e57e9ff | 712 | #ifdef NAMEI_DIAGNOSTIC |
d36023e3 | 713 | for (newhash = 0, cp = cnp->cn_nameptr; *cp != 0 && *cp != '/'; cp++) |
cfef4373 JH |
714 | newhash += (unsigned char)*cp; |
715 | if (newhash != cnp->cn_hash) | |
716 | panic("relookup: bad hash"); | |
717 | if (cnp->cn_namelen != cp - cnp->cn_nameptr) | |
718 | panic ("relookup: bad len"); | |
d36023e3 KM |
719 | if (*cp != 0) |
720 | panic("relookup: not last component"); | |
cfef4373 | 721 | printf("{%s}: ", cnp->cn_nameptr); |
cfef4373 | 722 | #endif |
cfef4373 JH |
723 | |
724 | /* | |
725 | * Check for degenerate name (e.g. / or "") | |
726 | * which is a way of talking about a directory, | |
727 | * e.g. like "/." or ".". | |
728 | */ | |
729 | if (cnp->cn_nameptr[0] == '\0') { | |
730 | if (cnp->cn_nameiop != LOOKUP || wantparent) { | |
731 | error = EISDIR; | |
732 | goto bad; | |
733 | } | |
734 | if (dp->v_type != VDIR) { | |
735 | error = ENOTDIR; | |
736 | goto bad; | |
737 | } | |
738 | if (!(cnp->cn_flags & LOCKLEAF)) | |
739 | VOP_UNLOCK(dp); | |
740 | *vpp = dp; | |
741 | if (cnp->cn_flags & SAVESTART) | |
742 | panic("lookup: SAVESTART"); | |
743 | return (0); | |
744 | } | |
745 | ||
cfef4373 JH |
746 | if (cnp->cn_flags & ISDOTDOT) |
747 | panic ("relookup: lookup on dot-dot"); | |
748 | ||
749 | /* | |
750 | * We now have a segment name to search for, and a directory to search. | |
751 | */ | |
752 | if (error = VOP_LOOKUP(dp, vpp, cnp)) { | |
753 | #ifdef DIAGNOSTIC | |
754 | if (*vpp != NULL) | |
755 | panic("leaf should be empty"); | |
cfef4373 | 756 | #endif |
39a892ba | 757 | if (error != EJUSTRETURN) |
cfef4373 JH |
758 | goto bad; |
759 | /* | |
760 | * If creating and at end of pathname, then can consider | |
761 | * allowing file to be created. | |
762 | */ | |
763 | if (rdonly || (dvp->v_mount->mnt_flag & MNT_RDONLY)) { | |
764 | error = EROFS; | |
765 | goto bad; | |
766 | } | |
d36023e3 KM |
767 | /* ASSERT(dvp == ndp->ni_startdir) */ |
768 | if (cnp->cn_flags & SAVESTART) | |
769 | VREF(dvp); | |
cfef4373 JH |
770 | /* |
771 | * We return with ni_vp NULL to indicate that the entry | |
772 | * doesn't currently exist, leaving a pointer to the | |
773 | * (possibly locked) directory inode in ndp->ni_dvp. | |
774 | */ | |
cfef4373 JH |
775 | return (0); |
776 | } | |
cfef4373 | 777 | dp = *vpp; |
2021967e | 778 | |
6e57e9ff | 779 | #ifdef DIAGNOSTIC |
cfef4373 JH |
780 | /* |
781 | * Check for symbolic link | |
782 | */ | |
2021967e | 783 | if (dp->v_type == VLNK && (cnp->cn_flags & FOLLOW)) |
cfef4373 | 784 | panic ("relookup: symlink found.\n"); |
cfef4373 | 785 | #endif |
cfef4373 | 786 | |
cfef4373 | 787 | nextname: |
cfef4373 JH |
788 | /* |
789 | * Check for read-only file systems. | |
790 | */ | |
791 | if (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME) { | |
792 | /* | |
793 | * Disallow directory write attempts on read-only | |
794 | * file systems. | |
795 | */ | |
796 | if (rdonly || (dp->v_mount->mnt_flag & MNT_RDONLY) || | |
797 | (wantparent && | |
798 | (dvp->v_mount->mnt_flag & MNT_RDONLY))) { | |
799 | error = EROFS; | |
800 | goto bad2; | |
801 | } | |
802 | } | |
d36023e3 KM |
803 | /* ASSERT(dvp == ndp->ni_startdir) */ |
804 | if (cnp->cn_flags & SAVESTART) | |
cfef4373 | 805 | VREF(dvp); |
cfef4373 JH |
806 | |
807 | if (!wantparent) | |
808 | vrele(dvp); | |
809 | if ((cnp->cn_flags & LOCKLEAF) == 0) | |
810 | VOP_UNLOCK(dp); | |
811 | return (0); | |
812 | ||
813 | bad2: | |
814 | if ((cnp->cn_flags & LOCKPARENT) && (cnp->cn_flags & ISLASTCN)) | |
815 | VOP_UNLOCK(dvp); | |
816 | vrele(dvp); | |
817 | bad: | |
818 | vput(dp); | |
819 | *vpp = NULL; | |
820 | return (error); | |
821 | } | |
822 | ||
823 | ||
4f083fd7 SL |
824 | /* |
825 | * Rename system call. | |
826 | * rename("foo", "bar"); | |
827 | * is essentially | |
828 | * unlink("bar"); | |
829 | * link("foo", "bar"); | |
830 | * unlink("foo"); | |
831 | * but ``atomically''. Can't do full commit without saving state in the | |
832 | * inode on disk which isn't feasible at this time. Best we can do is | |
833 | * always guarantee the target exists. | |
834 | * | |
835 | * Basic algorithm is: | |
836 | * | |
837 | * 1) Bump link count on source while we're linking it to the | |
7188ac27 | 838 | * target. This also ensure the inode won't be deleted out |
68f21562 KM |
839 | * from underneath us while we work (it may be truncated by |
840 | * a concurrent `trunc' or `open' for creation). | |
4f083fd7 SL |
841 | * 2) Link source to destination. If destination already exists, |
842 | * delete it first. | |
68f21562 KM |
843 | * 3) Unlink source reference to inode if still around. If a |
844 | * directory was moved and the parent of the destination | |
4f083fd7 SL |
845 | * is different from the source, patch the ".." entry in the |
846 | * directory. | |
4f083fd7 | 847 | */ |
031fd966 | 848 | int |
e6e1f8be | 849 | ufs_rename(ap) |
69021bc5 KM |
850 | struct vop_rename_args /* { |
851 | struct vnode *a_fdvp; | |
852 | struct vnode *a_fvp; | |
853 | struct componentname *a_fcnp; | |
854 | struct vnode *a_tdvp; | |
855 | struct vnode *a_tvp; | |
856 | struct componentname *a_tcnp; | |
857 | } */ *ap; | |
528f664c | 858 | { |
e6e1f8be KM |
859 | struct vnode *tvp = ap->a_tvp; |
860 | register struct vnode *tdvp = ap->a_tdvp; | |
861 | struct vnode *fvp = ap->a_fvp; | |
862 | register struct vnode *fdvp = ap->a_fdvp; | |
863 | register struct componentname *tcnp = ap->a_tcnp; | |
864 | register struct componentname *fcnp = ap->a_fcnp; | |
4f083fd7 | 865 | register struct inode *ip, *xp, *dp; |
68f21562 | 866 | struct dirtemplate dirbuf; |
fa4f99ac | 867 | struct timeval tv; |
68f21562 | 868 | int doingdirectory = 0, oldparent = 0, newparent = 0; |
a5390dce | 869 | int error = 0; |
cfef4373 | 870 | int fdvpneedsrele = 1, tdvpneedsrele = 1; |
86fb5449 | 871 | u_char namlen; |
4f083fd7 | 872 | |
8484f537 KM |
873 | #ifdef DIAGNOSTIC |
874 | if ((tcnp->cn_flags & HASBUF) == 0 || | |
875 | (fcnp->cn_flags & HASBUF) == 0) | |
876 | panic("ufs_rename: no name"); | |
877 | #endif | |
878 | /* | |
879 | * Check for cross-device rename. | |
880 | */ | |
e6e1f8be KM |
881 | if ((fvp->v_mount != tdvp->v_mount) || |
882 | (tvp && (fvp->v_mount != tvp->v_mount))) { | |
8484f537 KM |
883 | error = EXDEV; |
884 | abortit: | |
e6e1f8be KM |
885 | VOP_ABORTOP(tdvp, tcnp); /* XXX, why not in NFS? */ |
886 | if (tdvp == tvp) | |
887 | vrele(tdvp); | |
3330c9fe | 888 | else |
e6e1f8be KM |
889 | vput(tdvp); |
890 | if (tvp) | |
891 | vput(tvp); | |
892 | VOP_ABORTOP(fdvp, fcnp); /* XXX, why not in NFS? */ | |
893 | vrele(fdvp); | |
894 | vrele(fvp); | |
8484f537 | 895 | return (error); |
3330c9fe JSP |
896 | } |
897 | ||
655da945 KM |
898 | /* |
899 | * Check if just deleting a link name. | |
900 | */ | |
4784d59e KM |
901 | if (tvp && ((VTOI(tvp)->i_flags & (IMMUTABLE | APPEND)) || |
902 | (VTOI(tdvp)->i_flags & APPEND))) { | |
903 | error = EPERM; | |
904 | goto abortit; | |
905 | } | |
e6e1f8be | 906 | if (fvp == tvp) { |
8484f537 KM |
907 | if (fvp->v_type == VDIR) { |
908 | error = EINVAL; | |
909 | goto abortit; | |
910 | } | |
911 | VOP_ABORTOP(fdvp, fcnp); | |
912 | vrele(fdvp); | |
913 | vrele(fvp); | |
e6e1f8be KM |
914 | vput(tdvp); |
915 | vput(tvp); | |
8484f537 KM |
916 | tcnp->cn_flags &= ~MODMASK; |
917 | tcnp->cn_flags |= LOCKPARENT | LOCKLEAF; | |
918 | if ((tcnp->cn_flags & SAVESTART) == 0) | |
919 | panic("ufs_rename: lost from startdir"); | |
920 | tcnp->cn_nameiop = DELETE; | |
921 | (void) relookup(tdvp, &tvp, tcnp); | |
922 | return (VOP_REMOVE(tdvp, tvp, tcnp)); | |
655da945 | 923 | } |
8484f537 KM |
924 | if (error = VOP_LOCK(fvp)) |
925 | goto abortit; | |
926 | dp = VTOI(fdvp); | |
927 | ip = VTOI(fvp); | |
4784d59e KM |
928 | if ((ip->i_flags & (IMMUTABLE | APPEND)) || (dp->i_flags & APPEND)) { |
929 | VOP_UNLOCK(fvp); | |
930 | error = EPERM; | |
931 | goto abortit; | |
932 | } | |
8484f537 | 933 | if ((ip->i_mode & IFMT) == IFDIR) { |
4f083fd7 | 934 | /* |
046f18d1 | 935 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
4f083fd7 | 936 | */ |
e6e1f8be KM |
937 | if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || |
938 | dp == ip || (fcnp->cn_flags&ISDOTDOT) || | |
939 | (ip->i_flag & IRENAME)) { | |
8484f537 KM |
940 | VOP_UNLOCK(fvp); |
941 | error = EINVAL; | |
942 | goto abortit; | |
4f083fd7 | 943 | } |
68f21562 | 944 | ip->i_flag |= IRENAME; |
4f083fd7 SL |
945 | oldparent = dp->i_number; |
946 | doingdirectory++; | |
947 | } | |
e6e1f8be | 948 | vrele(fdvp); |
4f083fd7 | 949 | |
8484f537 KM |
950 | /* |
951 | * When the target exists, both the directory | |
952 | * and target vnodes are returned locked. | |
953 | */ | |
954 | dp = VTOI(tdvp); | |
955 | xp = NULL; | |
956 | if (tvp) | |
957 | xp = VTOI(tvp); | |
958 | ||
4f083fd7 SL |
959 | /* |
960 | * 1) Bump link count while we're moving stuff | |
961 | * around. If we crash somewhere before | |
962 | * completing our work, the link count | |
963 | * may be wrong, but correctable. | |
964 | */ | |
965 | ip->i_nlink++; | |
966 | ip->i_flag |= ICHG; | |
fa4f99ac | 967 | tv = time; |
8484f537 KM |
968 | if (error = VOP_UPDATE(fvp, &tv, &tv, 1)) { |
969 | VOP_UNLOCK(fvp); | |
970 | goto bad; | |
971 | } | |
4f083fd7 | 972 | |
046f18d1 SL |
973 | /* |
974 | * If ".." must be changed (ie the directory gets a new | |
81552f0f KM |
975 | * parent) then the source directory must not be in the |
976 | * directory heirarchy above the target, as this would | |
977 | * orphan everything below the source directory. Also | |
978 | * the user must have write permission in the source so | |
979 | * as to be able to change "..". We must repeat the call | |
980 | * to namei, as the parent directory is unlocked by the | |
981 | * call to checkpath(). | |
046f18d1 | 982 | */ |
8484f537 KM |
983 | error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred, tcnp->cn_proc); |
984 | VOP_UNLOCK(fvp); | |
68f21562 KM |
985 | if (oldparent != dp->i_number) |
986 | newparent = dp->i_number; | |
987 | if (doingdirectory && newparent) { | |
8484f537 | 988 | if (error) /* write access check above */ |
81552f0f | 989 | goto bad; |
655da945 | 990 | if (xp != NULL) |
8484f537 | 991 | vput(tvp); |
e6e1f8be | 992 | if (error = ufs_checkpath(ip, dp, tcnp->cn_cred)) |
655da945 | 993 | goto out; |
e6e1f8be | 994 | if ((tcnp->cn_flags & SAVESTART) == 0) |
655da945 | 995 | panic("ufs_rename: lost to startdir"); |
5e03b55d | 996 | p->p_spare[1]--; |
e6e1f8be | 997 | if (error = relookup(tdvp, &tvp, tcnp)) |
655da945 | 998 | goto out; |
e6e1f8be | 999 | dp = VTOI(tdvp); |
655da945 | 1000 | xp = NULL; |
e6e1f8be KM |
1001 | if (tvp) |
1002 | xp = VTOI(tvp); | |
81552f0f | 1003 | } |
4f083fd7 SL |
1004 | /* |
1005 | * 2) If target doesn't exist, link the target | |
1006 | * to the source and unlink the source. | |
1007 | * Otherwise, rewrite the target directory | |
1008 | * entry to reference the source inode and | |
1009 | * expunge the original entry's existence. | |
1010 | */ | |
4f083fd7 | 1011 | if (xp == NULL) { |
7188ac27 KM |
1012 | if (dp->i_dev != ip->i_dev) |
1013 | panic("rename: EXDEV"); | |
4f083fd7 | 1014 | /* |
68f21562 KM |
1015 | * Account for ".." in new directory. |
1016 | * When source and destination have the same | |
1017 | * parent we don't fool with the link count. | |
4f083fd7 | 1018 | */ |
68f21562 | 1019 | if (doingdirectory && newparent) { |
38285224 | 1020 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
986aedaa KM |
1021 | error = EMLINK; |
1022 | goto bad; | |
1023 | } | |
4f083fd7 SL |
1024 | dp->i_nlink++; |
1025 | dp->i_flag |= ICHG; | |
8484f537 | 1026 | if (error = VOP_UPDATE(tdvp, &tv, &tv, 1)) |
986aedaa | 1027 | goto bad; |
4f083fd7 | 1028 | } |
e6e1f8be | 1029 | if (error = ufs_direnter(ip, tdvp, tcnp)) { |
394d67a8 KM |
1030 | if (doingdirectory && newparent) { |
1031 | dp->i_nlink--; | |
1032 | dp->i_flag |= ICHG; | |
8484f537 | 1033 | (void)VOP_UPDATE(tdvp, &tv, &tv, 1); |
394d67a8 KM |
1034 | } |
1035 | goto bad; | |
1036 | } | |
8484f537 | 1037 | vput(tdvp); |
4f083fd7 | 1038 | } else { |
7188ac27 KM |
1039 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
1040 | panic("rename: EXDEV"); | |
e69c3c9c SL |
1041 | /* |
1042 | * Short circuit rename(foo, foo). | |
1043 | */ | |
1044 | if (xp->i_number == ip->i_number) | |
7188ac27 | 1045 | panic("rename: same file"); |
80cee150 JB |
1046 | /* |
1047 | * If the parent directory is "sticky", then the user must | |
1048 | * own the parent directory, or the destination of the rename, | |
1049 | * otherwise the destination may not be changed (except by | |
1050 | * root). This implements append-only directories. | |
1051 | */ | |
e6e1f8be KM |
1052 | if ((dp->i_mode & ISVTX) && tcnp->cn_cred->cr_uid != 0 && |
1053 | tcnp->cn_cred->cr_uid != dp->i_uid && | |
1054 | xp->i_uid != tcnp->cn_cred->cr_uid) { | |
80cee150 JB |
1055 | error = EPERM; |
1056 | goto bad; | |
1057 | } | |
4f083fd7 | 1058 | /* |
655da945 KM |
1059 | * Target must be empty if a directory and have no links |
1060 | * to it. Also, ensure source and target are compatible | |
1061 | * (both directories, or both not directories). | |
4f083fd7 SL |
1062 | */ |
1063 | if ((xp->i_mode&IFMT) == IFDIR) { | |
e6e1f8be | 1064 | if (!ufs_dirempty(xp, dp->i_number, tcnp->cn_cred) || |
7188ac27 | 1065 | xp->i_nlink > 2) { |
a5390dce | 1066 | error = ENOTEMPTY; |
4f083fd7 SL |
1067 | goto bad; |
1068 | } | |
1069 | if (!doingdirectory) { | |
a5390dce | 1070 | error = ENOTDIR; |
4f083fd7 SL |
1071 | goto bad; |
1072 | } | |
8484f537 | 1073 | cache_purge(tdvp); |
4f083fd7 | 1074 | } else if (doingdirectory) { |
a5390dce | 1075 | error = EISDIR; |
4f083fd7 SL |
1076 | goto bad; |
1077 | } | |
e6e1f8be | 1078 | if (error = ufs_dirrewrite(dp, ip, tcnp)) |
7188ac27 | 1079 | goto bad; |
a62786b9 KM |
1080 | /* |
1081 | * If the target directory is in the same | |
1082 | * directory as the source directory, | |
1083 | * decrement the link count on the parent | |
1084 | * of the target directory. | |
1085 | */ | |
1086 | if (doingdirectory && !newparent) { | |
1087 | dp->i_nlink--; | |
1088 | dp->i_flag |= ICHG; | |
1089 | } | |
8484f537 | 1090 | vput(tdvp); |
4f083fd7 | 1091 | /* |
a5390dce SL |
1092 | * Adjust the link count of the target to |
1093 | * reflect the dirrewrite above. If this is | |
1094 | * a directory it is empty and there are | |
1095 | * no links to it, so we can squash the inode and | |
1096 | * any space associated with it. We disallowed | |
1097 | * renaming over top of a directory with links to | |
68f21562 KM |
1098 | * it above, as the remaining link would point to |
1099 | * a directory without "." or ".." entries. | |
4f083fd7 | 1100 | */ |
a5390dce | 1101 | xp->i_nlink--; |
4f083fd7 | 1102 | if (doingdirectory) { |
a5390dce SL |
1103 | if (--xp->i_nlink != 0) |
1104 | panic("rename: linked directory"); | |
8484f537 | 1105 | error = VOP_TRUNCATE(tvp, (off_t)0, IO_SYNC, |
69021bc5 | 1106 | tcnp->cn_cred, tcnp->cn_proc); |
a5390dce | 1107 | } |
4f083fd7 | 1108 | xp->i_flag |= ICHG; |
8484f537 | 1109 | vput(tvp); |
31db12cb | 1110 | xp = NULL; |
4f083fd7 SL |
1111 | } |
1112 | ||
1113 | /* | |
1114 | * 3) Unlink the source. | |
1115 | */ | |
e6e1f8be KM |
1116 | fcnp->cn_flags &= ~MODMASK; |
1117 | fcnp->cn_flags |= LOCKPARENT | LOCKLEAF; | |
1118 | if ((fcnp->cn_flags & SAVESTART) == 0) | |
655da945 | 1119 | panic("ufs_rename: lost from startdir"); |
5e03b55d | 1120 | p->p_spare[1]--; |
e6e1f8be KM |
1121 | (void) relookup(fdvp, &fvp, fcnp); |
1122 | if (fvp != NULL) { | |
1123 | xp = VTOI(fvp); | |
1124 | dp = VTOI(fdvp); | |
7188ac27 | 1125 | } else { |
d9d75b8f KM |
1126 | /* |
1127 | * From name has disappeared. | |
1128 | */ | |
1129 | if (doingdirectory) | |
1130 | panic("rename: lost dir entry"); | |
8484f537 | 1131 | vrele(ap->a_fvp); |
d9d75b8f | 1132 | return (0); |
7188ac27 | 1133 | } |
4f083fd7 | 1134 | /* |
7188ac27 | 1135 | * Ensure that the directory entry still exists and has not |
68f21562 KM |
1136 | * changed while the new name has been entered. If the source is |
1137 | * a file then the entry may have been unlinked or renamed. In | |
1138 | * either case there is no further work to be done. If the source | |
1139 | * is a directory then it cannot have been rmdir'ed; its link | |
1140 | * count of three would cause a rmdir to fail with ENOTEMPTY. | |
7188ac27 | 1141 | * The IRENAME flag ensures that it cannot be moved by another |
68f21562 | 1142 | * rename. |
4f083fd7 | 1143 | */ |
4f1a9037 | 1144 | if (xp != ip) { |
68f21562 | 1145 | if (doingdirectory) |
4f1a9037 | 1146 | panic("rename: lost dir entry"); |
68f21562 | 1147 | } else { |
4f083fd7 | 1148 | /* |
68f21562 KM |
1149 | * If the source is a directory with a |
1150 | * new parent, the link count of the old | |
1151 | * parent directory must be decremented | |
1152 | * and ".." set to point to the new parent. | |
4f083fd7 | 1153 | */ |
68f21562 | 1154 | if (doingdirectory && newparent) { |
4f083fd7 SL |
1155 | dp->i_nlink--; |
1156 | dp->i_flag |= ICHG; | |
8484f537 | 1157 | error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf, |
7188ac27 | 1158 | sizeof (struct dirtemplate), (off_t)0, |
86cdabf6 | 1159 | UIO_SYSSPACE, IO_NODELOCKED, |
e6e1f8be | 1160 | tcnp->cn_cred, (int *)0, (struct proc *)0); |
68f21562 | 1161 | if (error == 0) { |
86fb5449 KM |
1162 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1163 | if (fvp->v_mount->mnt_maxsymlinklen <= 0) | |
1164 | namlen = dirbuf.dotdot_type; | |
1165 | else | |
1166 | namlen = dirbuf.dotdot_namlen; | |
1167 | # else | |
1168 | namlen = dirbuf.dotdot_namlen; | |
1169 | # endif | |
1170 | if (namlen != 2 || | |
68f21562 KM |
1171 | dirbuf.dotdot_name[0] != '.' || |
1172 | dirbuf.dotdot_name[1] != '.') { | |
362d7f3b | 1173 | ufs_dirbad(xp, (doff_t)12, |
031fd966 | 1174 | "rename: mangled dir"); |
68f21562 KM |
1175 | } else { |
1176 | dirbuf.dotdot_ino = newparent; | |
8484f537 | 1177 | (void) vn_rdwr(UIO_WRITE, fvp, |
68f21562 KM |
1178 | (caddr_t)&dirbuf, |
1179 | sizeof (struct dirtemplate), | |
93e273b9 | 1180 | (off_t)0, UIO_SYSSPACE, |
86cdabf6 | 1181 | IO_NODELOCKED|IO_SYNC, |
e6e1f8be | 1182 | tcnp->cn_cred, (int *)0, |
5b169cb7 | 1183 | (struct proc *)0); |
8484f537 | 1184 | cache_purge(fdvp); |
68f21562 KM |
1185 | } |
1186 | } | |
4f083fd7 | 1187 | } |
e6e1f8be | 1188 | error = ufs_dirremove(fdvp, fcnp); |
7188ac27 | 1189 | if (!error) { |
68f21562 KM |
1190 | xp->i_nlink--; |
1191 | xp->i_flag |= ICHG; | |
4f083fd7 | 1192 | } |
68f21562 | 1193 | xp->i_flag &= ~IRENAME; |
4f083fd7 | 1194 | } |
4f083fd7 | 1195 | if (dp) |
8484f537 | 1196 | vput(fdvp); |
68f21562 | 1197 | if (xp) |
8484f537 KM |
1198 | vput(fvp); |
1199 | vrele(ap->a_fvp); | |
7188ac27 | 1200 | return (error); |
a5390dce | 1201 | |
4f083fd7 | 1202 | bad: |
4f083fd7 | 1203 | if (xp) |
7188ac27 KM |
1204 | vput(ITOV(xp)); |
1205 | vput(ITOV(dp)); | |
4f083fd7 | 1206 | out: |
8484f537 KM |
1207 | if (VOP_LOCK(fvp) == 0) { |
1208 | ip->i_nlink--; | |
1209 | ip->i_flag |= ICHG; | |
1210 | vput(fvp); | |
1211 | } else | |
1212 | vrele(fvp); | |
7188ac27 | 1213 | return (error); |
64d3a787 | 1214 | } |
88a7a62a SL |
1215 | |
1216 | /* | |
1217 | * A virgin directory (no blushing please). | |
1218 | */ | |
031fd966 | 1219 | static struct dirtemplate mastertemplate = { |
86fb5449 KM |
1220 | 0, 12, DT_DIR, 1, ".", |
1221 | 0, DIRBLKSIZ - 12, DT_DIR, 2, ".." | |
1222 | }; | |
1223 | static struct odirtemplate omastertemplate = { | |
88a7a62a SL |
1224 | 0, 12, 1, ".", |
1225 | 0, DIRBLKSIZ - 12, 2, ".." | |
1226 | }; | |
1227 | ||
1228 | /* | |
1229 | * Mkdir system call | |
1230 | */ | |
031fd966 | 1231 | int |
e6e1f8be | 1232 | ufs_mkdir(ap) |
69021bc5 KM |
1233 | struct vop_mkdir_args /* { |
1234 | struct vnode *a_dvp; | |
1235 | struct vnode **a_vpp; | |
1236 | struct componentname *a_cnp; | |
1237 | struct vattr *a_vap; | |
1238 | } */ *ap; | |
88a7a62a | 1239 | { |
e6e1f8be KM |
1240 | register struct vnode *dvp = ap->a_dvp; |
1241 | register struct vattr *vap = ap->a_vap; | |
1242 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1243 | register struct inode *ip, *dp; |
c59af027 | 1244 | struct vnode *tvp; |
86fb5449 | 1245 | struct dirtemplate dirtemplate, *dtp; |
fa4f99ac CT |
1246 | struct timeval tv; |
1247 | int error, dmode; | |
7188ac27 | 1248 | |
38285224 | 1249 | #ifdef DIAGNOSTIC |
e6e1f8be | 1250 | if ((cnp->cn_flags & HASBUF) == 0) |
655da945 KM |
1251 | panic("ufs_mkdir: no name"); |
1252 | #endif | |
e6e1f8be | 1253 | dp = VTOI(dvp); |
38285224 | 1254 | if ((nlink_t)dp->i_nlink >= LINK_MAX) { |
4784d59e KM |
1255 | error = EMLINK; |
1256 | goto out; | |
986aedaa | 1257 | } |
4784d59e | 1258 | dmode = vap->va_mode & 0777; |
7188ac27 | 1259 | dmode |= IFDIR; |
88a7a62a | 1260 | /* |
e3b1aef5 KM |
1261 | * Must simulate part of ufs_makeinode here to acquire the inode, |
1262 | * but not have it entered in the parent directory. The entry is | |
1263 | * made later after writing "." and ".." entries. | |
88a7a62a | 1264 | */ |
4784d59e KM |
1265 | if (error = VOP_VALLOC(dvp, dmode, cnp->cn_cred, &tvp)) |
1266 | goto out; | |
c59af027 | 1267 | ip = VTOI(tvp); |
e6e1f8be | 1268 | ip->i_uid = cnp->cn_cred->cr_uid; |
4b61628b | 1269 | ip->i_gid = dp->i_gid; |
88a7a62a | 1270 | #ifdef QUOTA |
4b61628b | 1271 | if ((error = getinoquota(ip)) || |
e6e1f8be KM |
1272 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
1273 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 1274 | VOP_VFREE(tvp, ip->i_number, dmode); |
8484f537 KM |
1275 | vput(tvp); |
1276 | vput(dvp); | |
4b61628b KM |
1277 | return (error); |
1278 | } | |
88a7a62a SL |
1279 | #endif |
1280 | ip->i_flag |= IACC|IUPD|ICHG; | |
7188ac27 | 1281 | ip->i_mode = dmode; |
8484f537 | 1282 | tvp->v_type = VDIR; /* Rest init'd in iget() */ |
88a7a62a | 1283 | ip->i_nlink = 2; |
fa4f99ac | 1284 | tv = time; |
8484f537 | 1285 | error = VOP_UPDATE(tvp, &tv, &tv, 1); |
88a7a62a SL |
1286 | |
1287 | /* | |
1288 | * Bump link count in parent directory | |
1289 | * to reflect work done below. Should | |
1290 | * be done before reference is created | |
1291 | * so reparation is possible if we crash. | |
1292 | */ | |
1293 | dp->i_nlink++; | |
1294 | dp->i_flag |= ICHG; | |
8484f537 | 1295 | if (error = VOP_UPDATE(dvp, &tv, &tv, 1)) |
394d67a8 | 1296 | goto bad; |
88a7a62a | 1297 | |
031fd966 | 1298 | /* Initialize directory with "." and ".." from static template. */ |
86fb5449 KM |
1299 | if (dvp->v_mount->mnt_maxsymlinklen > 0) |
1300 | dtp = &mastertemplate; | |
1301 | else | |
1302 | dtp = (struct dirtemplate *)&omastertemplate; | |
1303 | dirtemplate = *dtp; | |
88a7a62a SL |
1304 | dirtemplate.dot_ino = ip->i_number; |
1305 | dirtemplate.dotdot_ino = dp->i_number; | |
8484f537 | 1306 | error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate, |
5b169cb7 | 1307 | sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE, |
e6e1f8be | 1308 | IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0, (struct proc *)0); |
7188ac27 | 1309 | if (error) { |
88a7a62a SL |
1310 | dp->i_nlink--; |
1311 | dp->i_flag |= ICHG; | |
1312 | goto bad; | |
1313 | } | |
e6e1f8be | 1314 | if (DIRBLKSIZ > VFSTOUFS(dvp->v_mount)->um_mountp->mnt_stat.f_bsize) |
031fd966 KB |
1315 | panic("ufs_mkdir: blksize"); /* XXX should grow with balloc() */ |
1316 | else { | |
23de9f20 | 1317 | ip->i_size = DIRBLKSIZ; |
15365e07 KM |
1318 | ip->i_flag |= ICHG; |
1319 | } | |
031fd966 KB |
1320 | |
1321 | /* Directory set up, now install it's entry in the parent directory. */ | |
e6e1f8be | 1322 | if (error = ufs_direnter(ip, dvp, cnp)) { |
2a5d2f56 KM |
1323 | dp->i_nlink--; |
1324 | dp->i_flag |= ICHG; | |
88a7a62a SL |
1325 | } |
1326 | bad: | |
1327 | /* | |
c59af027 KM |
1328 | * No need to do an explicit VOP_TRUNCATE here, vrele will do this |
1329 | * for us because we set the link count to 0. | |
88a7a62a | 1330 | */ |
7188ac27 | 1331 | if (error) { |
88a7a62a SL |
1332 | ip->i_nlink = 0; |
1333 | ip->i_flag |= ICHG; | |
8484f537 | 1334 | vput(tvp); |
cbcdacd6 | 1335 | } else |
8484f537 | 1336 | *ap->a_vpp = tvp; |
4784d59e | 1337 | out: |
e6e1f8be | 1338 | FREE(cnp->cn_pnbuf, M_NAMEI); |
8484f537 | 1339 | vput(dvp); |
7188ac27 | 1340 | return (error); |
88a7a62a SL |
1341 | } |
1342 | ||
1343 | /* | |
1344 | * Rmdir system call. | |
1345 | */ | |
031fd966 | 1346 | int |
e6e1f8be | 1347 | ufs_rmdir(ap) |
69021bc5 | 1348 | struct vop_rmdir_args /* { |
69021bc5 KM |
1349 | struct vnode *a_dvp; |
1350 | struct vnode *a_vp; | |
1351 | struct componentname *a_cnp; | |
1352 | } */ *ap; | |
88a7a62a | 1353 | { |
8484f537 | 1354 | register struct vnode *vp = ap->a_vp; |
e6e1f8be KM |
1355 | register struct vnode *dvp = ap->a_dvp; |
1356 | register struct componentname *cnp = ap->a_cnp; | |
88a7a62a | 1357 | register struct inode *ip, *dp; |
031fd966 | 1358 | int error; |
7188ac27 | 1359 | |
8484f537 | 1360 | ip = VTOI(vp); |
e6e1f8be | 1361 | dp = VTOI(dvp); |
88a7a62a SL |
1362 | /* |
1363 | * No rmdir "." please. | |
1364 | */ | |
1365 | if (dp == ip) { | |
e6e1f8be | 1366 | vrele(dvp); |
8484f537 | 1367 | vput(vp); |
7188ac27 | 1368 | return (EINVAL); |
88a7a62a SL |
1369 | } |
1370 | /* | |
1371 | * Verify the directory is empty (and valid). | |
1372 | * (Rmdir ".." won't be valid since | |
1373 | * ".." will contain a reference to | |
1374 | * the current directory and thus be | |
1375 | * non-empty.) | |
1376 | */ | |
031fd966 KB |
1377 | error = 0; |
1378 | if (ip->i_nlink != 2 || | |
e6e1f8be | 1379 | !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) { |
7188ac27 | 1380 | error = ENOTEMPTY; |
88a7a62a SL |
1381 | goto out; |
1382 | } | |
4784d59e KM |
1383 | if ((dp->i_flags & APPEND) || (ip->i_flags & (IMMUTABLE | APPEND))) { |
1384 | error = EPERM; | |
1385 | goto out; | |
1386 | } | |
88a7a62a SL |
1387 | /* |
1388 | * Delete reference to directory before purging | |
1389 | * inode. If we crash in between, the directory | |
1390 | * will be reattached to lost+found, | |
1391 | */ | |
e6e1f8be | 1392 | if (error = ufs_dirremove(dvp, cnp)) |
88a7a62a SL |
1393 | goto out; |
1394 | dp->i_nlink--; | |
1395 | dp->i_flag |= ICHG; | |
e6e1f8be | 1396 | cache_purge(dvp); |
8484f537 | 1397 | vput(dvp); |
e6e1f8be | 1398 | dvp = NULL; |
88a7a62a SL |
1399 | /* |
1400 | * Truncate inode. The only stuff left | |
1401 | * in the directory is "." and "..". The | |
1402 | * "." reference is inconsequential since | |
1403 | * we're quashing it. The ".." reference | |
1404 | * has already been adjusted above. We've | |
1405 | * removed the "." reference and the reference | |
1406 | * in the parent directory, but there may be | |
1407 | * other hard links so decrement by 2 and | |
1408 | * worry about them later. | |
1409 | */ | |
1410 | ip->i_nlink -= 2; | |
8484f537 | 1411 | error = VOP_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred, |
69021bc5 | 1412 | cnp->cn_proc); |
7188ac27 | 1413 | cache_purge(ITOV(ip)); |
88a7a62a | 1414 | out: |
e6e1f8be | 1415 | if (dvp) |
8484f537 KM |
1416 | vput(dvp); |
1417 | vput(vp); | |
7188ac27 | 1418 | return (error); |
88a7a62a SL |
1419 | } |
1420 | ||
7188ac27 KM |
1421 | /* |
1422 | * symlink -- make a symbolic link | |
1423 | */ | |
031fd966 | 1424 | int |
e6e1f8be | 1425 | ufs_symlink(ap) |
69021bc5 KM |
1426 | struct vop_symlink_args /* { |
1427 | struct vnode *a_dvp; | |
1428 | struct vnode **a_vpp; | |
1429 | struct componentname *a_cnp; | |
1430 | struct vattr *a_vap; | |
1431 | char *a_target; | |
1432 | } */ *ap; | |
7188ac27 | 1433 | { |
2a7acb0a KM |
1434 | register struct vnode *vp, **vpp = ap->a_vpp; |
1435 | register struct inode *ip; | |
1436 | int len, error; | |
7188ac27 | 1437 | |
e6e1f8be KM |
1438 | if (error = ufs_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp, |
1439 | vpp, ap->a_cnp)) | |
7188ac27 | 1440 | return (error); |
2a7acb0a KM |
1441 | vp = *vpp; |
1442 | len = strlen(ap->a_target); | |
1443 | if (len < vp->v_mount->mnt_maxsymlinklen) { | |
1444 | ip = VTOI(vp); | |
1445 | bcopy(ap->a_target, (char *)ip->i_shortlink, len); | |
1446 | ip->i_size = len; | |
1447 | ip->i_flag |= IUPD|ICHG; | |
1448 | } else | |
1449 | error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, | |
1450 | UIO_SYSSPACE, IO_NODELOCKED, ap->a_cnp->cn_cred, (int *)0, | |
1451 | (struct proc *)0); | |
1452 | vput(vp); | |
7188ac27 KM |
1453 | return (error); |
1454 | } | |
1455 | ||
1456 | /* | |
d8ba9f9d KM |
1457 | * Vnode op for reading directories. |
1458 | * | |
1459 | * The routine below assumes that the on-disk format of a directory | |
1460 | * is the same as that defined by <sys/dirent.h>. If the on-disk | |
1461 | * format changes, then it will be necessary to do a conversion | |
1462 | * from the on-disk format that read returns to the format defined | |
1463 | * by <sys/dirent.h>. | |
7188ac27 | 1464 | */ |
031fd966 | 1465 | int |
e6e1f8be | 1466 | ufs_readdir(ap) |
69021bc5 KM |
1467 | struct vop_readdir_args /* { |
1468 | struct vnode *a_vp; | |
1469 | struct uio *a_uio; | |
1470 | struct ucred *a_cred; | |
1471 | } */ *ap; | |
88a7a62a | 1472 | { |
e6e1f8be | 1473 | register struct uio *uio = ap->a_uio; |
86cdabf6 | 1474 | int count, lost, error; |
88a7a62a | 1475 | |
e6e1f8be | 1476 | count = uio->uio_resid; |
7188ac27 | 1477 | count &= ~(DIRBLKSIZ - 1); |
e6e1f8be KM |
1478 | lost = uio->uio_resid - count; |
1479 | if (count < DIRBLKSIZ || (uio->uio_offset & (DIRBLKSIZ -1))) | |
7188ac27 | 1480 | return (EINVAL); |
e6e1f8be KM |
1481 | uio->uio_resid = count; |
1482 | uio->uio_iov->iov_len = count; | |
86fb5449 KM |
1483 | # if (BYTE_ORDER == LITTLE_ENDIAN) |
1484 | if (ap->a_vp->v_mount->mnt_maxsymlinklen > 0) { | |
1485 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1486 | } else { | |
1487 | struct dirent *dp, *edp; | |
1488 | struct uio auio; | |
1489 | struct iovec aiov; | |
1490 | caddr_t dirbuf; | |
1491 | int readcnt; | |
1492 | u_char tmp; | |
1493 | ||
1494 | auio = *uio; | |
1495 | auio.uio_iov = &aiov; | |
1496 | auio.uio_iovcnt = 1; | |
1497 | auio.uio_segflg = UIO_SYSSPACE; | |
1498 | aiov.iov_len = count; | |
1499 | MALLOC(dirbuf, caddr_t, count, M_TEMP, M_WAITOK); | |
1500 | aiov.iov_base = dirbuf; | |
f8776d0c | 1501 | error = VOP_READ(ap->a_vp, &auio, 0, ap->a_cred); |
86fb5449 KM |
1502 | if (error == 0) { |
1503 | readcnt = count - auio.uio_resid; | |
1504 | edp = (struct dirent *)&dirbuf[readcnt]; | |
1505 | for (dp = (struct dirent *)dirbuf; dp < edp; ) { | |
1506 | tmp = dp->d_namlen; | |
1507 | dp->d_namlen = dp->d_type; | |
1508 | dp->d_type = tmp; | |
1509 | if (dp->d_reclen > 0) { | |
1510 | dp = (struct dirent *) | |
1511 | ((char *)dp + dp->d_reclen); | |
1512 | } else { | |
1513 | error = EIO; | |
1514 | break; | |
1515 | } | |
1516 | } | |
1517 | if (dp >= edp) | |
1518 | error = uiomove(dirbuf, readcnt, uio); | |
1519 | } | |
1520 | FREE(dirbuf, M_TEMP); | |
1521 | } | |
1522 | # else | |
1523 | error = VOP_READ(ap->a_vp, uio, 0, ap->a_cred); | |
1524 | # endif | |
e6e1f8be | 1525 | uio->uio_resid += lost; |
7188ac27 KM |
1526 | return (error); |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * Return target name of a symbolic link | |
1531 | */ | |
031fd966 | 1532 | int |
e6e1f8be | 1533 | ufs_readlink(ap) |
69021bc5 KM |
1534 | struct vop_readlink_args /* { |
1535 | struct vnode *a_vp; | |
1536 | struct uio *a_uio; | |
1537 | struct ucred *a_cred; | |
1538 | } */ *ap; | |
7188ac27 | 1539 | { |
2a7acb0a KM |
1540 | register struct vnode *vp = ap->a_vp; |
1541 | register struct inode *ip = VTOI(vp); | |
3081d578 | 1542 | int isize; |
7188ac27 | 1543 | |
3081d578 KM |
1544 | isize = ip->i_size; |
1545 | if (isize < vp->v_mount->mnt_maxsymlinklen) { | |
1546 | uiomove((char *)ip->i_shortlink, isize, ap->a_uio); | |
2a7acb0a KM |
1547 | return (0); |
1548 | } | |
1549 | return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); | |
7188ac27 KM |
1550 | } |
1551 | ||
1552 | /* | |
1553 | * Ufs abort op, called after namei() when a CREATE/DELETE isn't actually | |
655da945 | 1554 | * done. If a buffer has been saved in anticipation of a CREATE, delete it. |
7188ac27 | 1555 | */ |
66955caf | 1556 | /* ARGSUSED */ |
031fd966 | 1557 | int |
e6e1f8be | 1558 | ufs_abortop(ap) |
69021bc5 KM |
1559 | struct vop_abortop_args /* { |
1560 | struct vnode *a_dvp; | |
1561 | struct componentname *a_cnp; | |
1562 | } */ *ap; | |
7188ac27 | 1563 | { |
e1b76915 JH |
1564 | if ((ap->a_cnp->cn_flags & (HASBUF | SAVESTART)) == HASBUF) |
1565 | FREE(ap->a_cnp->cn_pnbuf, M_NAMEI); | |
66955caf | 1566 | return (0); |
7188ac27 KM |
1567 | } |
1568 | ||
1c3ebc10 | 1569 | /* |
8484f537 | 1570 | * Lock an inode. If its already locked, set the WANT bit and sleep. |
1c3ebc10 | 1571 | */ |
031fd966 | 1572 | int |
e6e1f8be | 1573 | ufs_lock(ap) |
69021bc5 KM |
1574 | struct vop_lock_args /* { |
1575 | struct vnode *a_vp; | |
1576 | } */ *ap; | |
7188ac27 | 1577 | { |
8484f537 KM |
1578 | register struct vnode *vp = ap->a_vp; |
1579 | register struct inode *ip; | |
1580 | struct proc *p = curproc; /* XXX */ | |
7188ac27 | 1581 | |
8484f537 KM |
1582 | start: |
1583 | while (vp->v_flag & VXLOCK) { | |
1584 | vp->v_flag |= VXWANT; | |
1585 | sleep((caddr_t)vp, PINOD); | |
1586 | } | |
1587 | if (vp->v_tag == VT_NON) | |
1588 | return (ENOENT); | |
1589 | ip = VTOI(vp); | |
1590 | if (ip->i_flag & ILOCKED) { | |
1591 | ip->i_flag |= IWANT; | |
1592 | #ifdef DIAGNOSTIC | |
1593 | if (p) { | |
1594 | if (p->p_pid == ip->i_lockholder) | |
1595 | panic("locking against myself"); | |
1596 | ip->i_lockwaiter = p->p_pid; | |
89f92c3c KM |
1597 | } else |
1598 | ip->i_lockwaiter = -1; | |
8484f537 KM |
1599 | #endif |
1600 | (void) sleep((caddr_t)ip, PINOD); | |
1601 | goto start; | |
1602 | } | |
1603 | #ifdef DIAGNOSTIC | |
1604 | ip->i_lockwaiter = 0; | |
89f92c3c KM |
1605 | if (ip->i_lockholder != 0) |
1606 | panic("lockholder (%d) != 0", ip->i_lockholder); | |
1607 | if (p && p->p_pid == 0) | |
1608 | printf("locking by process 0\n"); | |
8484f537 KM |
1609 | if (p) |
1610 | ip->i_lockholder = p->p_pid; | |
89f92c3c KM |
1611 | else |
1612 | ip->i_lockholder = -1; | |
8484f537 KM |
1613 | #endif |
1614 | ip->i_flag |= ILOCKED; | |
7188ac27 KM |
1615 | return (0); |
1616 | } | |
1617 | ||
1c3ebc10 | 1618 | /* |
8484f537 | 1619 | * Unlock an inode. If WANT bit is on, wakeup. |
1c3ebc10 | 1620 | */ |
89f92c3c | 1621 | int lockcount = 90; |
031fd966 | 1622 | int |
e6e1f8be | 1623 | ufs_unlock(ap) |
69021bc5 KM |
1624 | struct vop_unlock_args /* { |
1625 | struct vnode *a_vp; | |
1626 | } */ *ap; | |
7188ac27 | 1627 | { |
e1b76915 | 1628 | register struct inode *ip = VTOI(ap->a_vp); |
89f92c3c | 1629 | struct proc *p = curproc; /* XXX */ |
7188ac27 | 1630 | |
89f92c3c | 1631 | #ifdef DIAGNOSTIC |
8484f537 KM |
1632 | if ((ip->i_flag & ILOCKED) == 0) { |
1633 | vprint("ufs_unlock: unlocked inode", ap->a_vp); | |
7188ac27 | 1634 | panic("ufs_unlock NOT LOCKED"); |
8484f537 | 1635 | } |
89f92c3c KM |
1636 | if (p && p->p_pid != ip->i_lockholder && p->p_pid > -1 && |
1637 | ip->i_lockholder > -1 && lockcount++ < 100) | |
1638 | panic("unlocker (%d) != lock holder (%d)", | |
1639 | p->p_pid, ip->i_lockholder); | |
8484f537 KM |
1640 | ip->i_lockholder = 0; |
1641 | #endif | |
1642 | ip->i_flag &= ~ILOCKED; | |
1643 | if (ip->i_flag & IWANT) { | |
1644 | ip->i_flag &= ~IWANT; | |
1645 | wakeup((caddr_t)ip); | |
1646 | } | |
7188ac27 KM |
1647 | return (0); |
1648 | } | |
1649 | ||
1c3ebc10 KM |
1650 | /* |
1651 | * Check for a locked inode. | |
1652 | */ | |
031fd966 | 1653 | int |
e6e1f8be | 1654 | ufs_islocked(ap) |
69021bc5 KM |
1655 | struct vop_islocked_args /* { |
1656 | struct vnode *a_vp; | |
1657 | } */ *ap; | |
1c3ebc10 KM |
1658 | { |
1659 | ||
e1b76915 | 1660 | if (VTOI(ap->a_vp)->i_flag & ILOCKED) |
1c3ebc10 KM |
1661 | return (1); |
1662 | return (0); | |
1663 | } | |
1664 | ||
88a7a62a | 1665 | /* |
4f1ff475 KM |
1666 | * Calculate the logical to physical mapping if not done already, |
1667 | * then call the device strategy routine. | |
88a7a62a | 1668 | */ |
0e8c7122 KM |
1669 | #include <sys/sysctl.h> |
1670 | int checkblk = 1; | |
1671 | struct ctldebug debug10 = { "checkblk", &checkblk }; | |
031fd966 | 1672 | int |
e6e1f8be | 1673 | ufs_strategy(ap) |
69021bc5 KM |
1674 | struct vop_strategy_args /* { |
1675 | struct buf *a_bp; | |
1676 | } */ *ap; | |
88a7a62a | 1677 | { |
e6e1f8be KM |
1678 | register struct buf *bp = ap->a_bp; |
1679 | register struct vnode *vp = bp->b_vp; | |
031fd966 | 1680 | register struct inode *ip; |
049ad674 | 1681 | daddr_t blkno; |
e16fa59e KM |
1682 | int error; |
1683 | ||
e6e1f8be KM |
1684 | ip = VTOI(vp); |
1685 | if (vp->v_type == VBLK || vp->v_type == VCHR) | |
e16fa59e | 1686 | panic("ufs_strategy: spec"); |
049ad674 KM |
1687 | if ((checkblk && (long)bp->b_lblkno >= 0 && |
1688 | (bp->b_flags & B_XXX) == 0) || | |
1689 | bp->b_blkno == bp->b_lblkno) { | |
1690 | if (error = VOP_BMAP(vp, bp->b_lblkno, NULL, &blkno, NULL)) { | |
e6e1f8be KM |
1691 | bp->b_error = error; |
1692 | bp->b_flags |= B_ERROR; | |
1693 | biodone(bp); | |
e16fa59e | 1694 | return (error); |
dd1d1daf | 1695 | } |
049ad674 KM |
1696 | if (bp->b_blkno != bp->b_lblkno && bp->b_blkno != blkno && |
1697 | !((bp->b_flags & B_READ) && (long)blkno == -1)) | |
1698 | panic("ufs_strategy: bad blkno %d != %d", bp->b_blkno, | |
1699 | blkno); | |
1700 | /* If this is a clustered block, check sub-blocks as well */ | |
1701 | if (bp->b_saveaddr) { | |
1702 | struct buf *tbp; | |
0e8c7122 | 1703 | struct cluster_save *b_save; |
049ad674 KM |
1704 | int i; |
1705 | daddr_t bn; | |
0e8c7122 KM |
1706 | |
1707 | b_save = (struct cluster_save *)bp->b_saveaddr; | |
049ad674 KM |
1708 | for (i = 0; i < b_save->bs_nchildren; i++) { |
1709 | tbp = b_save->bs_children[i]; | |
1710 | if ((tbp->b_flags & B_XXX) == 0 && | |
1711 | !VOP_BMAP(vp, tbp->b_lblkno, NULL, | |
1712 | &bn, NULL) && tbp->b_blkno != bn) | |
1713 | panic("ufs_strategy: bad bno %d != %d", | |
1714 | bp->b_blkno, blkno); | |
1715 | } | |
1716 | } | |
1717 | bp->b_blkno = blkno; | |
e6e1f8be | 1718 | if ((long)bp->b_blkno == -1) |
049ad674 KM |
1719 | if ((bp->b_flags & B_READ) == 0) |
1720 | panic("ufs_startegy: write unallocated block"); | |
1721 | else | |
1722 | clrbuf(bp); | |
e16fa59e | 1723 | } |
049ad674 | 1724 | bp->b_flags &=~ B_XXX; |
e6e1f8be KM |
1725 | if ((long)bp->b_blkno == -1) { |
1726 | biodone(bp); | |
e16fa59e | 1727 | return (0); |
20aa076b | 1728 | } |
e16fa59e | 1729 | vp = ip->i_devvp; |
e6e1f8be | 1730 | bp->b_dev = vp->v_rdev; |
ea460dfe | 1731 | VOCALL (vp->v_op, VOFFSET(vop_strategy), ap); |
7188ac27 KM |
1732 | return (0); |
1733 | } | |
88a7a62a | 1734 | |
e16fa59e KM |
1735 | /* |
1736 | * Print out the contents of an inode. | |
1737 | */ | |
031fd966 | 1738 | int |
e6e1f8be | 1739 | ufs_print(ap) |
69021bc5 KM |
1740 | struct vop_print_args /* { |
1741 | struct vnode *a_vp; | |
1742 | } */ *ap; | |
e16fa59e | 1743 | { |
e6e1f8be KM |
1744 | register struct vnode *vp = ap->a_vp; |
1745 | register struct inode *ip = VTOI(vp); | |
e16fa59e | 1746 | |
a8f829ed KM |
1747 | printf("tag VT_UFS, ino %d, on dev %d, %d", ip->i_number, |
1748 | major(ip->i_dev), minor(ip->i_dev)); | |
1749 | #ifdef FIFO | |
e6e1f8be KM |
1750 | if (vp->v_type == VFIFO) |
1751 | fifo_printinfo(vp); | |
a8f829ed KM |
1752 | #endif /* FIFO */ |
1753 | printf("%s\n", (ip->i_flag & ILOCKED) ? " (LOCKED)" : ""); | |
4a8fb1bb | 1754 | if (ip->i_lockholder == 0) |
031fd966 | 1755 | return (0); |
4a8fb1bb KM |
1756 | printf("\towner pid %d", ip->i_lockholder); |
1757 | if (ip->i_lockwaiter) | |
1758 | printf(" waiting pid %d", ip->i_lockwaiter); | |
96bae3e0 | 1759 | printf("\n"); |
031fd966 | 1760 | return (0); |
e16fa59e KM |
1761 | } |
1762 | ||
24a31b70 KM |
1763 | /* |
1764 | * Read wrapper for special devices. | |
1765 | */ | |
031fd966 | 1766 | int |
e6e1f8be | 1767 | ufsspec_read(ap) |
69021bc5 KM |
1768 | struct vop_read_args /* { |
1769 | struct vnode *a_vp; | |
1770 | struct uio *a_uio; | |
1771 | int a_ioflag; | |
1772 | struct ucred *a_cred; | |
1773 | } */ *ap; | |
24a31b70 KM |
1774 | { |
1775 | ||
1776 | /* | |
1777 | * Set access flag. | |
1778 | */ | |
e1b76915 | 1779 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1780 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_read), ap)); |
24a31b70 KM |
1781 | } |
1782 | ||
1783 | /* | |
1784 | * Write wrapper for special devices. | |
1785 | */ | |
031fd966 | 1786 | int |
e6e1f8be | 1787 | ufsspec_write(ap) |
69021bc5 KM |
1788 | struct vop_write_args /* { |
1789 | struct vnode *a_vp; | |
1790 | struct uio *a_uio; | |
1791 | int a_ioflag; | |
1792 | struct ucred *a_cred; | |
1793 | } */ *ap; | |
24a31b70 KM |
1794 | { |
1795 | ||
1796 | /* | |
1797 | * Set update and change flags. | |
1798 | */ | |
e1b76915 | 1799 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1800 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_write), ap)); |
24a31b70 KM |
1801 | } |
1802 | ||
1803 | /* | |
1804 | * Close wrapper for special devices. | |
1805 | * | |
1806 | * Update the times on the inode then do device close. | |
1807 | */ | |
031fd966 | 1808 | int |
e6e1f8be | 1809 | ufsspec_close(ap) |
69021bc5 KM |
1810 | struct vop_close_args /* { |
1811 | struct vnode *a_vp; | |
1812 | int a_fflag; | |
1813 | struct ucred *a_cred; | |
1814 | struct proc *a_p; | |
1815 | } */ *ap; | |
24a31b70 | 1816 | { |
e1b76915 | 1817 | register struct inode *ip = VTOI(ap->a_vp); |
24a31b70 | 1818 | |
e1b76915 | 1819 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
24a31b70 | 1820 | ITIMES(ip, &time, &time); |
ea460dfe | 1821 | return (VOCALL (spec_vnodeop_p, VOFFSET(vop_close), ap)); |
24a31b70 KM |
1822 | } |
1823 | ||
d1c43d7f KM |
1824 | #ifdef FIFO |
1825 | /* | |
1826 | * Read wrapper for fifo's | |
1827 | */ | |
031fd966 | 1828 | int |
e6e1f8be | 1829 | ufsfifo_read(ap) |
69021bc5 KM |
1830 | struct vop_read_args /* { |
1831 | struct vnode *a_vp; | |
1832 | struct uio *a_uio; | |
1833 | int a_ioflag; | |
1834 | struct ucred *a_cred; | |
1835 | } */ *ap; | |
d1c43d7f | 1836 | { |
ea460dfe | 1837 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1838 | |
1839 | /* | |
1840 | * Set access flag. | |
1841 | */ | |
e1b76915 | 1842 | VTOI(ap->a_vp)->i_flag |= IACC; |
ea460dfe | 1843 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_read), ap)); |
d1c43d7f KM |
1844 | } |
1845 | ||
1846 | /* | |
1847 | * Write wrapper for fifo's. | |
1848 | */ | |
031fd966 | 1849 | int |
e6e1f8be | 1850 | ufsfifo_write(ap) |
69021bc5 KM |
1851 | struct vop_write_args /* { |
1852 | struct vnode *a_vp; | |
1853 | struct uio *a_uio; | |
1854 | int a_ioflag; | |
1855 | struct ucred *a_cred; | |
1856 | } */ *ap; | |
d1c43d7f | 1857 | { |
ea460dfe | 1858 | extern int (**fifo_vnodeop_p)(); |
d1c43d7f KM |
1859 | |
1860 | /* | |
1861 | * Set update and change flags. | |
1862 | */ | |
e1b76915 | 1863 | VTOI(ap->a_vp)->i_flag |= IUPD|ICHG; |
ea460dfe | 1864 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_write), ap)); |
d1c43d7f KM |
1865 | } |
1866 | ||
1867 | /* | |
1868 | * Close wrapper for fifo's. | |
1869 | * | |
1870 | * Update the times on the inode then do device close. | |
1871 | */ | |
e6e1f8be | 1872 | ufsfifo_close(ap) |
69021bc5 KM |
1873 | struct vop_close_args /* { |
1874 | struct vnode *a_vp; | |
1875 | int a_fflag; | |
1876 | struct ucred *a_cred; | |
1877 | struct proc *a_p; | |
1878 | } */ *ap; | |
d1c43d7f | 1879 | { |
ea460dfe | 1880 | extern int (**fifo_vnodeop_p)(); |
e1b76915 | 1881 | register struct inode *ip = VTOI(ap->a_vp); |
d1c43d7f | 1882 | |
e1b76915 | 1883 | if (ap->a_vp->v_usecount > 1 && !(ip->i_flag & ILOCKED)) |
d1c43d7f | 1884 | ITIMES(ip, &time, &time); |
ea460dfe | 1885 | return (VOCALL (fifo_vnodeop_p, VOFFSET(vop_close), ap)); |
d1c43d7f KM |
1886 | } |
1887 | #endif /* FIFO */ | |
1888 | ||
0b0bf936 KM |
1889 | /* |
1890 | * Advisory record locking support | |
1891 | */ | |
031fd966 | 1892 | int |
e6e1f8be | 1893 | ufs_advlock(ap) |
69021bc5 KM |
1894 | struct vop_advlock_args /* { |
1895 | struct vnode *a_vp; | |
1896 | caddr_t a_id; | |
1897 | int a_op; | |
1898 | struct flock *a_fl; | |
1899 | int a_flags; | |
1900 | } */ *ap; | |
0b0bf936 | 1901 | { |
e1b76915 | 1902 | register struct inode *ip = VTOI(ap->a_vp); |
e6e1f8be | 1903 | register struct flock *fl = ap->a_fl; |
0b0bf936 KM |
1904 | register struct lockf *lock; |
1905 | off_t start, end; | |
1906 | int error; | |
1907 | ||
1908 | /* | |
1909 | * Avoid the common case of unlocking when inode has no locks. | |
1910 | */ | |
1911 | if (ip->i_lockf == (struct lockf *)0) { | |
e1b76915 | 1912 | if (ap->a_op != F_SETLK) { |
e6e1f8be | 1913 | fl->l_type = F_UNLCK; |
0b0bf936 KM |
1914 | return (0); |
1915 | } | |
1916 | } | |
1917 | /* | |
1918 | * Convert the flock structure into a start and end. | |
1919 | */ | |
e6e1f8be | 1920 | switch (fl->l_whence) { |
0b0bf936 KM |
1921 | |
1922 | case SEEK_SET: | |
1923 | case SEEK_CUR: | |
1924 | /* | |
1925 | * Caller is responsible for adding any necessary offset | |
1926 | * when SEEK_CUR is used. | |
1927 | */ | |
e6e1f8be | 1928 | start = fl->l_start; |
0b0bf936 KM |
1929 | break; |
1930 | ||
1931 | case SEEK_END: | |
e6e1f8be | 1932 | start = ip->i_size + fl->l_start; |
0b0bf936 KM |
1933 | break; |
1934 | ||
1935 | default: | |
1936 | return (EINVAL); | |
1937 | } | |
1938 | if (start < 0) | |
1939 | return (EINVAL); | |
e6e1f8be | 1940 | if (fl->l_len == 0) |
0b0bf936 KM |
1941 | end = -1; |
1942 | else | |
e6e1f8be | 1943 | end = start + fl->l_len - 1; |
0b0bf936 KM |
1944 | /* |
1945 | * Create the lockf structure | |
1946 | */ | |
1947 | MALLOC(lock, struct lockf *, sizeof *lock, M_LOCKF, M_WAITOK); | |
1948 | lock->lf_start = start; | |
1949 | lock->lf_end = end; | |
e1b76915 | 1950 | lock->lf_id = ap->a_id; |
0b0bf936 | 1951 | lock->lf_inode = ip; |
e6e1f8be | 1952 | lock->lf_type = fl->l_type; |
0b0bf936 KM |
1953 | lock->lf_next = (struct lockf *)0; |
1954 | lock->lf_block = (struct lockf *)0; | |
e1b76915 | 1955 | lock->lf_flags = ap->a_flags; |
0b0bf936 KM |
1956 | /* |
1957 | * Do the requested operation. | |
1958 | */ | |
e1b76915 | 1959 | switch(ap->a_op) { |
0b0bf936 | 1960 | case F_SETLK: |
b9fc1077 | 1961 | return (lf_setlock(lock)); |
0b0bf936 KM |
1962 | |
1963 | case F_UNLCK: | |
b9fc1077 KM |
1964 | error = lf_clearlock(lock); |
1965 | FREE(lock, M_LOCKF); | |
1966 | return (error); | |
0b0bf936 KM |
1967 | |
1968 | case F_GETLK: | |
e6e1f8be | 1969 | error = lf_getlock(lock, fl); |
b9fc1077 KM |
1970 | FREE(lock, M_LOCKF); |
1971 | return (error); | |
0b0bf936 KM |
1972 | |
1973 | default: | |
1974 | free(lock, M_LOCKF); | |
1975 | return (EINVAL); | |
1976 | } | |
1977 | /* NOTREACHED */ | |
1978 | } | |
5b169cb7 KM |
1979 | |
1980 | /* | |
031fd966 KB |
1981 | * Initialize the vnode associated with a new inode, handle aliased |
1982 | * vnodes. | |
5b169cb7 | 1983 | */ |
031fd966 | 1984 | int |
c59af027 | 1985 | ufs_vinit(mntp, specops, fifoops, vpp) |
031fd966 | 1986 | struct mount *mntp; |
1d52469b JH |
1987 | int (**specops)(); |
1988 | int (**fifoops)(); | |
031fd966 KB |
1989 | struct vnode **vpp; |
1990 | { | |
cda1e3e8 | 1991 | struct inode *ip; |
031fd966 KB |
1992 | struct vnode *vp, *nvp; |
1993 | ||
1994 | vp = *vpp; | |
1995 | ip = VTOI(vp); | |
1996 | switch(vp->v_type = IFTOVT(ip->i_mode)) { | |
1997 | case VCHR: | |
1998 | case VBLK: | |
c59af027 | 1999 | vp->v_op = specops; |
031fd966 | 2000 | if (nvp = checkalias(vp, ip->i_rdev, mntp)) { |
c59af027 | 2001 | /* |
4a8fb1bb | 2002 | * Discard unneeded vnode, but save its inode. |
c59af027 | 2003 | */ |
cda1e3e8 | 2004 | ufs_ihashrem(ip); |
8484f537 | 2005 | VOP_UNLOCK(vp); |
4a8fb1bb KM |
2006 | nvp->v_data = vp->v_data; |
2007 | vp->v_data = NULL; | |
9342689a | 2008 | vp->v_op = spec_vnodeop_p; |
4a8fb1bb KM |
2009 | vrele(vp); |
2010 | vgone(vp); | |
c59af027 | 2011 | /* |
4a8fb1bb | 2012 | * Reinitialize aliased inode. |
c59af027 | 2013 | */ |
4a8fb1bb KM |
2014 | vp = nvp; |
2015 | ip->i_vnode = vp; | |
2016 | ufs_ihashins(ip); | |
031fd966 KB |
2017 | } |
2018 | break; | |
2019 | case VFIFO: | |
2020 | #ifdef FIFO | |
c59af027 | 2021 | vp->v_op = fifoops; |
031fd966 KB |
2022 | break; |
2023 | #else | |
2024 | return (EOPNOTSUPP); | |
2025 | #endif | |
2026 | } | |
031fd966 KB |
2027 | if (ip->i_number == ROOTINO) |
2028 | vp->v_flag |= VROOT; | |
1a3cb193 KM |
2029 | /* |
2030 | * Initialize modrev times | |
2031 | */ | |
2032 | SETHIGH(ip->i_modrev, mono_time.tv_sec); | |
2033 | SETLOW(ip->i_modrev, mono_time.tv_usec * 4294); | |
031fd966 KB |
2034 | *vpp = vp; |
2035 | return (0); | |
2036 | } | |
5b169cb7 | 2037 | |
031fd966 KB |
2038 | /* |
2039 | * Allocate a new inode. | |
2040 | */ | |
2041 | int | |
6e57e9ff | 2042 | ufs_makeinode(mode, dvp, vpp, cnp) |
031fd966 | 2043 | int mode; |
cfef4373 | 2044 | struct vnode *dvp; |
c59af027 | 2045 | struct vnode **vpp; |
cfef4373 | 2046 | struct componentname *cnp; |
031fd966 KB |
2047 | { |
2048 | register struct inode *ip, *pdir; | |
fa4f99ac | 2049 | struct timeval tv; |
c59af027 | 2050 | struct vnode *tvp; |
031fd966 KB |
2051 | int error; |
2052 | ||
cfef4373 | 2053 | pdir = VTOI(dvp); |
38285224 | 2054 | #ifdef DIAGNOSTIC |
cfef4373 | 2055 | if ((cnp->cn_flags & HASBUF) == 0) |
031fd966 KB |
2056 | panic("ufs_makeinode: no name"); |
2057 | #endif | |
c59af027 | 2058 | *vpp = NULL; |
031fd966 KB |
2059 | if ((mode & IFMT) == 0) |
2060 | mode |= IFREG; | |
2061 | ||
cfef4373 JH |
2062 | if (error = VOP_VALLOC(dvp, mode, cnp->cn_cred, &tvp)) { |
2063 | free(cnp->cn_pnbuf, M_NAMEI); | |
8484f537 | 2064 | vput(dvp); |
031fd966 KB |
2065 | return (error); |
2066 | } | |
c59af027 | 2067 | ip = VTOI(tvp); |
031fd966 | 2068 | ip->i_gid = pdir->i_gid; |
e3b1aef5 KM |
2069 | if ((mode & IFMT) == IFLNK) |
2070 | ip->i_uid = pdir->i_uid; | |
2071 | else | |
2072 | ip->i_uid = cnp->cn_cred->cr_uid; | |
031fd966 KB |
2073 | #ifdef QUOTA |
2074 | if ((error = getinoquota(ip)) || | |
cfef4373 JH |
2075 | (error = chkiq(ip, 1, cnp->cn_cred, 0))) { |
2076 | free(cnp->cn_pnbuf, M_NAMEI); | |
c59af027 | 2077 | VOP_VFREE(tvp, ip->i_number, mode); |
8484f537 KM |
2078 | vput(tvp); |
2079 | vput(dvp); | |
031fd966 KB |
2080 | return (error); |
2081 | } | |
2082 | #endif | |
2083 | ip->i_flag |= IACC|IUPD|ICHG; | |
2084 | ip->i_mode = mode; | |
c59af027 | 2085 | tvp->v_type = IFTOVT(mode); /* Rest init'd in iget() */ |
031fd966 | 2086 | ip->i_nlink = 1; |
cfef4373 JH |
2087 | if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) && |
2088 | suser(cnp->cn_cred, NULL)) | |
031fd966 KB |
2089 | ip->i_mode &= ~ISGID; |
2090 | ||
2091 | /* | |
2092 | * Make sure inode goes to disk before directory entry. | |
2093 | */ | |
fa4f99ac CT |
2094 | tv = time; |
2095 | if (error = VOP_UPDATE(tvp, &tv, &tv, 1)) | |
031fd966 | 2096 | goto bad; |
cfef4373 | 2097 | if (error = ufs_direnter(ip, dvp, cnp)) |
031fd966 | 2098 | goto bad; |
cfef4373 JH |
2099 | if ((cnp->cn_flags & SAVESTART) == 0) |
2100 | FREE(cnp->cn_pnbuf, M_NAMEI); | |
8484f537 | 2101 | vput(dvp); |
c59af027 | 2102 | *vpp = tvp; |
031fd966 KB |
2103 | return (0); |
2104 | ||
2105 | bad: | |
2106 | /* | |
2107 | * Write error occurred trying to update the inode | |
2108 | * or the directory so must deallocate the inode. | |
2109 | */ | |
cfef4373 | 2110 | free(cnp->cn_pnbuf, M_NAMEI); |
8484f537 | 2111 | vput(dvp); |
031fd966 KB |
2112 | ip->i_nlink = 0; |
2113 | ip->i_flag |= ICHG; | |
8484f537 | 2114 | vput(tvp); |
031fd966 KB |
2115 | return (error); |
2116 | } |