File: | ufs/ufs/ufs_vnops.c |
Warning: | line 1302, column 2 Value stored to 'error' is never read |
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1 | /* $OpenBSD: ufs_vnops.c,v 1.155 2021/12/12 09:14:59 visa Exp $ */ |
2 | /* $NetBSD: ufs_vnops.c,v 1.18 1996/05/11 18:28:04 mycroft Exp $ */ |
3 | |
4 | /* |
5 | * Copyright (c) 1982, 1986, 1989, 1993 |
6 | * The Regents of the University of California. All rights reserved. |
7 | * (c) UNIX System Laboratories, Inc. |
8 | * All or some portions of this file are derived from material licensed |
9 | * to the University of California by American Telephone and Telegraph |
10 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
11 | * the permission of UNIX System Laboratories, Inc. |
12 | * |
13 | * Redistribution and use in source and binary forms, with or without |
14 | * modification, are permitted provided that the following conditions |
15 | * are met: |
16 | * 1. Redistributions of source code must retain the above copyright |
17 | * notice, this list of conditions and the following disclaimer. |
18 | * 2. Redistributions in binary form must reproduce the above copyright |
19 | * notice, this list of conditions and the following disclaimer in the |
20 | * documentation and/or other materials provided with the distribution. |
21 | * 3. Neither the name of the University nor the names of its contributors |
22 | * may be used to endorse or promote products derived from this software |
23 | * without specific prior written permission. |
24 | * |
25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
35 | * SUCH DAMAGE. |
36 | * |
37 | * @(#)ufs_vnops.c 8.14 (Berkeley) 10/26/94 |
38 | */ |
39 | |
40 | #include <sys/param.h> |
41 | #include <sys/systm.h> |
42 | #include <sys/namei.h> |
43 | #include <sys/resourcevar.h> |
44 | #include <sys/kernel.h> |
45 | #include <sys/fcntl.h> |
46 | #include <sys/file.h> |
47 | #include <sys/stat.h> |
48 | #include <sys/buf.h> |
49 | #include <sys/proc.h> |
50 | #include <sys/mount.h> |
51 | #include <sys/vnode.h> |
52 | #include <sys/malloc.h> |
53 | #include <sys/pool.h> |
54 | #include <sys/dirent.h> |
55 | #include <sys/lockf.h> |
56 | #include <sys/event.h> |
57 | #include <sys/poll.h> |
58 | #include <sys/specdev.h> |
59 | #include <sys/unistd.h> |
60 | |
61 | #include <miscfs/fifofs/fifo.h> |
62 | |
63 | #include <ufs/ufs/quota.h> |
64 | #include <ufs/ufs/inode.h> |
65 | #include <ufs/ufs/dir.h> |
66 | #include <ufs/ufs/ufsmount.h> |
67 | #include <ufs/ufs/ufs_extern.h> |
68 | #ifdef UFS_DIRHASH1 |
69 | #include <ufs/ufs/dirhash.h> |
70 | #endif |
71 | #include <ufs/ext2fs/ext2fs_extern.h> |
72 | |
73 | #include <uvm/uvm_extern.h> |
74 | |
75 | int ufs_chmod(struct vnode *, int, struct ucred *); |
76 | int ufs_chown(struct vnode *, uid_t, gid_t, struct ucred *); |
77 | int filt_ufsread(struct knote *, long); |
78 | int filt_ufswrite(struct knote *, long); |
79 | int filt_ufsvnode(struct knote *, long); |
80 | void filt_ufsdetach(struct knote *); |
81 | |
82 | /* |
83 | * A virgin directory (no blushing please). |
84 | */ |
85 | static struct dirtemplate mastertemplate = { |
86 | 0, 12, DT_DIR4, 1, ".", |
87 | 0, DIRBLKSIZ(1 << 9) - 12, DT_DIR4, 2, ".." |
88 | }; |
89 | static struct odirtemplate omastertemplate = { |
90 | 0, 12, 1, ".", |
91 | 0, DIRBLKSIZ(1 << 9) - 12, 2, ".." |
92 | }; |
93 | |
94 | /* |
95 | * Update the times in the inode |
96 | */ |
97 | void |
98 | ufs_itimes(struct vnode *vp) |
99 | { |
100 | struct inode *ip; |
101 | struct timespec ts; |
102 | |
103 | ip = VTOI(vp)((struct inode *)(vp)->v_data); |
104 | if ((ip->i_flag & (IN_ACCESS0x0001 | IN_CHANGE0x0002 | IN_UPDATE0x0004)) == 0) |
105 | return; |
106 | |
107 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
108 | goto out; |
109 | |
110 | #ifdef EXT2FS1 |
111 | if (IS_EXT2_VNODE(ip->i_vnode)(ip->i_vnode->v_tag == VT_EXT2FS)) { |
112 | EXT2FS_ITIMES(ip)do { if ((ip)->i_flag & (0x0001 | 0x0002 | 0x0004)) { ( ip)->i_flag |= 0x0008; if ((ip)->i_flag & 0x0001) ( ip)->dinode_u.e2fs_din->e2di_atime = gettime(); if ((ip )->i_flag & 0x0004) (ip)->dinode_u.e2fs_din->e2di_mtime = gettime(); if ((ip)->i_flag & 0x0002) { (ip)->dinode_u .e2fs_din->e2di_ctime = gettime(); (ip)->i_modrev++; } ( ip)->i_flag &= ~(0x0001 | 0x0002 | 0x0004); } } while ( 0); |
113 | goto out; |
114 | } |
115 | #endif |
116 | |
117 | if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp)((vp)->v_mount->mnt_flag & 0x04000000)) |
118 | ip->i_flag |= IN_LAZYMOD0x0080; |
119 | else |
120 | ip->i_flag |= IN_MODIFIED0x0008; |
121 | |
122 | getnanotime(&ts); |
123 | if (ip->i_flag & IN_ACCESS0x0001) { |
124 | DIP_ASSIGN(ip, atime, ts.tv_sec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_atime = (ts.tv_sec); else (ip)->dinode_u. ffs2_din->di_atime = (ts.tv_sec); } while (0); |
125 | DIP_ASSIGN(ip, atimensec, ts.tv_nsec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_atimensec = (ts.tv_nsec); else (ip)->dinode_u .ffs2_din->di_atimensec = (ts.tv_nsec); } while (0); |
126 | } |
127 | if (ip->i_flag & IN_UPDATE0x0004) { |
128 | DIP_ASSIGN(ip, mtime, ts.tv_sec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mtime = (ts.tv_sec); else (ip)->dinode_u. ffs2_din->di_mtime = (ts.tv_sec); } while (0); |
129 | DIP_ASSIGN(ip, mtimensec, ts.tv_nsec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mtimensec = (ts.tv_nsec); else (ip)->dinode_u .ffs2_din->di_mtimensec = (ts.tv_nsec); } while (0); |
130 | } |
131 | if (ip->i_flag & IN_CHANGE0x0002) { |
132 | DIP_ASSIGN(ip, ctime, ts.tv_sec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_ctime = (ts.tv_sec); else (ip)->dinode_u. ffs2_din->di_ctime = (ts.tv_sec); } while (0); |
133 | DIP_ASSIGN(ip, ctimensec, ts.tv_nsec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_ctimensec = (ts.tv_nsec); else (ip)->dinode_u .ffs2_din->di_ctimensec = (ts.tv_nsec); } while (0); |
134 | ip->i_modrev++; |
135 | } |
136 | |
137 | out: |
138 | ip->i_flag &= ~(IN_ACCESS0x0001 | IN_CHANGE0x0002 | IN_UPDATE0x0004); |
139 | } |
140 | |
141 | |
142 | /* |
143 | * Create a regular file |
144 | */ |
145 | int |
146 | ufs_create(void *v) |
147 | { |
148 | struct vop_create_args *ap = v; |
149 | int error; |
150 | |
151 | error = |
152 | ufs_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode)(int)((vttoif_tab[(int)(ap->a_vap->va_type)]) | (ap-> a_vap->va_mode)), |
153 | ap->a_dvp, ap->a_vpp, ap->a_cnp); |
154 | if (error == 0) |
155 | VN_KNOTE(ap->a_dvp, NOTE_WRITE)do { struct klist *__list = (&ap->a_dvp->v_selectinfo .si_note); if (__list != ((void *)0)) knote(__list, (0x0002)) ; } while (0); |
156 | return (error); |
157 | } |
158 | |
159 | /* |
160 | * Mknod vnode call |
161 | */ |
162 | int |
163 | ufs_mknod(void *v) |
164 | { |
165 | struct vop_mknod_args *ap = v; |
166 | struct vattr *vap = ap->a_vap; |
167 | struct vnode **vpp = ap->a_vpp; |
168 | struct inode *ip; |
169 | int error; |
170 | |
171 | if ((error = |
172 | ufs_makeinode(MAKEIMODE(vap->va_type, vap->va_mode)(int)((vttoif_tab[(int)(vap->va_type)]) | (vap->va_mode )), |
173 | ap->a_dvp, vpp, ap->a_cnp)) != 0) |
174 | return (error); |
175 | VN_KNOTE(ap->a_dvp, NOTE_WRITE)do { struct klist *__list = (&ap->a_dvp->v_selectinfo .si_note); if (__list != ((void *)0)) knote(__list, (0x0002)) ; } while (0); |
176 | ip = VTOI(*vpp)((struct inode *)(*vpp)->v_data); |
177 | ip->i_flag |= IN_ACCESS0x0001 | IN_CHANGE0x0002 | IN_UPDATE0x0004; |
178 | if (vap->va_rdev != VNOVAL(-1)) { |
179 | /* |
180 | * Want to be able to use this to make badblock |
181 | * inodes, so don't truncate the dev number. |
182 | */ |
183 | DIP_ASSIGN(ip, rdev, vap->va_rdev)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_db[0] = (vap->va_rdev); else (ip)->dinode_u .ffs2_din->di_db[0] = (vap->va_rdev); } while (0); |
184 | } |
185 | /* |
186 | * Remove inode so that it will be reloaded by VFS_VGET and |
187 | * checked to see if it is an alias of an existing entry in |
188 | * the inode cache. |
189 | */ |
190 | vput(*vpp); |
191 | (*vpp)->v_type = VNON; |
192 | vgone(*vpp); |
193 | *vpp = NULL((void *)0); |
194 | return (0); |
195 | } |
196 | |
197 | /* |
198 | * Open called. |
199 | * |
200 | * Nothing to do. |
201 | */ |
202 | int |
203 | ufs_open(void *v) |
204 | { |
205 | struct vop_open_args *ap = v; |
206 | struct inode *ip = VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data); |
207 | |
208 | /* |
209 | * Files marked append-only must be opened for appending. |
210 | */ |
211 | if ((DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & APPEND(0x00000004 | 0x00040000)) && |
212 | (ap->a_mode & (FWRITE0x0002 | O_APPEND0x0008)) == FWRITE0x0002) |
213 | return (EPERM1); |
214 | |
215 | if (ap->a_mode & O_TRUNC0x0400) |
216 | ip->i_flag |= IN_CHANGE0x0002 | IN_UPDATE0x0004; |
217 | |
218 | return (0); |
219 | } |
220 | |
221 | /* |
222 | * Close called. |
223 | * |
224 | * Update the times on the inode. |
225 | */ |
226 | int |
227 | ufs_close(void *v) |
228 | { |
229 | struct vop_close_args *ap = v; |
230 | struct vnode *vp = ap->a_vp; |
231 | |
232 | if (vp->v_usecount > 1) |
233 | ufs_itimes(vp); |
234 | return (0); |
235 | } |
236 | |
237 | int |
238 | ufs_access(void *v) |
239 | { |
240 | struct vop_access_args *ap = v; |
241 | struct vnode *vp = ap->a_vp; |
242 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
243 | mode_t mode = ap->a_mode; |
244 | |
245 | /* |
246 | * Disallow write attempts on read-only file systems; |
247 | * unless the file is a socket, fifo, or a block or |
248 | * character device resident on the file system. |
249 | */ |
250 | if (mode & VWRITE00200) { |
251 | switch (vp->v_type) { |
252 | int error; |
253 | case VDIR: |
254 | case VLNK: |
255 | case VREG: |
256 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
257 | return (EROFS30); |
258 | |
259 | if ((error = getinoquota(ip)) != 0) |
260 | return (error); |
261 | break; |
262 | case VBAD: |
263 | case VBLK: |
264 | case VCHR: |
265 | case VSOCK: |
266 | case VFIFO: |
267 | case VNON: |
268 | break; |
269 | |
270 | } |
271 | } |
272 | |
273 | /* If immutable bit set, nobody gets to write it. */ |
274 | if ((mode & VWRITE00200) && (DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & IMMUTABLE(0x00000002 | 0x00020000))) |
275 | return (EPERM1); |
276 | |
277 | if (vnoperm(vp)) { |
278 | /* For VEXEC, at least one of the execute bits must be set. */ |
279 | if ((mode & VEXEC00100) && vp->v_type != VDIR && |
280 | (DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode) & (S_IXUSR0000100|S_IXGRP0000010|S_IXOTH0000001)) == 0) |
281 | return EACCES13; |
282 | return 0; |
283 | } |
284 | |
285 | return (vaccess(vp->v_type, DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode), DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid), DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid), |
286 | mode, ap->a_cred)); |
287 | } |
288 | |
289 | int |
290 | ufs_getattr(void *v) |
291 | { |
292 | struct vop_getattr_args *ap = v; |
293 | struct vnode *vp = ap->a_vp; |
294 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
295 | struct vattr *vap = ap->a_vap; |
296 | |
297 | ufs_itimes(vp); |
298 | |
299 | /* |
300 | * Copy from inode table |
301 | */ |
302 | vap->va_fsid = ip->i_dev; |
303 | vap->va_fileid = ip->i_number; |
304 | vap->va_mode = DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode) & ~IFMT0170000; |
305 | vap->va_nlink = ip->i_effnlink; |
306 | vap->va_uid = DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid); |
307 | vap->va_gid = DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid); |
308 | vap->va_rdev = (dev_t) DIP(ip, rdev)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_db[0] : (ip)->dinode_u.ffs2_din->di_db[0]); |
309 | vap->va_size = DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size); |
310 | vap->va_atime.tv_sec = DIP(ip, atime)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_atime : (ip)->dinode_u.ffs2_din->di_atime); |
311 | vap->va_atime.tv_nsec = DIP(ip, atimensec)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_atimensec : (ip)->dinode_u.ffs2_din->di_atimensec ); |
312 | vap->va_mtime.tv_sec = DIP(ip, mtime)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mtime : (ip)->dinode_u.ffs2_din->di_mtime); |
313 | vap->va_mtime.tv_nsec = DIP(ip, mtimensec)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mtimensec : (ip)->dinode_u.ffs2_din->di_mtimensec ); |
314 | vap->va_ctime.tv_sec = DIP(ip, ctime)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_ctime : (ip)->dinode_u.ffs2_din->di_ctime); |
315 | vap->va_ctime.tv_nsec = DIP(ip, ctimensec)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_ctimensec : (ip)->dinode_u.ffs2_din->di_ctimensec ); |
316 | vap->va_flags = DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags); |
317 | vap->va_gen = DIP(ip, gen)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gen : (ip)->dinode_u.ffs2_din->di_gen); |
318 | /* this doesn't belong here */ |
319 | if (vp->v_type == VBLK) |
320 | vap->va_blocksize = BLKDEV_IOSIZE(1 << 12); |
321 | else if (vp->v_type == VCHR) |
322 | vap->va_blocksize = MAXBSIZE(64 * 1024); |
323 | else |
324 | vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize; |
325 | vap->va_bytes = dbtob((u_quad_t) DIP(ip, blocks))(((u_quad_t) (((ip)->i_ump->um_fstype == 1) ? (ip)-> dinode_u.ffs1_din->di_blocks : (ip)->dinode_u.ffs2_din-> di_blocks)) << 9); |
326 | vap->va_type = vp->v_type; |
327 | vap->va_filerev = ip->i_modrev; |
328 | return (0); |
329 | } |
330 | |
331 | /* |
332 | * Set attribute vnode op. called from several syscalls |
333 | */ |
334 | int |
335 | ufs_setattr(void *v) |
336 | { |
337 | struct vop_setattr_args *ap = v; |
338 | struct vattr *vap = ap->a_vap; |
339 | struct vnode *vp = ap->a_vp; |
340 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
341 | struct ucred *cred = ap->a_cred; |
342 | int error; |
343 | long hint = NOTE_ATTRIB0x0008; |
344 | u_quad_t oldsize; |
345 | |
346 | /* |
347 | * Check for unsettable attributes. |
348 | */ |
349 | if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL(-1)) || |
350 | (vap->va_fsid != VNOVAL(-1)) || (vap->va_fileid != VNOVAL(-1)) || |
351 | (vap->va_blocksize != VNOVAL(-1)) || (vap->va_rdev != VNOVAL(-1)) || |
352 | ((int)vap->va_bytes != VNOVAL(-1)) || (vap->va_gen != VNOVAL(-1))) { |
353 | return (EINVAL22); |
354 | } |
355 | if (vap->va_flags != VNOVAL(-1)) { |
356 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
357 | return (EROFS30); |
358 | if (cred->cr_uid != DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid) && |
359 | !vnoperm(vp) && |
360 | (error = suser_ucred(cred))) |
361 | return (error); |
362 | if (cred->cr_uid == 0 || vnoperm(vp)) { |
363 | if ((DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (SF_IMMUTABLE0x00020000 | SF_APPEND0x00040000)) && |
364 | securelevel > 0) |
365 | return (EPERM1); |
366 | DIP_ASSIGN(ip, flags, vap->va_flags)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_flags = (vap->va_flags); else (ip)->dinode_u .ffs2_din->di_flags = (vap->va_flags); } while (0); |
367 | } else { |
368 | if (DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (SF_IMMUTABLE0x00020000 | SF_APPEND0x00040000) || |
369 | (vap->va_flags & UF_SETTABLE0x0000ffff) != vap->va_flags) |
370 | return (EPERM1); |
371 | DIP_AND(ip, flags, SF_SETTABLE)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_flags &= (0xffff0000); else (ip)->dinode_u .ffs2_din->di_flags &= (0xffff0000); } while (0); |
372 | DIP_OR(ip, flags, vap->va_flags & UF_SETTABLE)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_flags |= (vap->va_flags & 0x0000ffff) ; else (ip)->dinode_u.ffs2_din->di_flags |= (vap->va_flags & 0x0000ffff); } while (0); |
373 | } |
374 | ip->i_flag |= IN_CHANGE0x0002; |
375 | if (vap->va_flags & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000))) |
376 | return (0); |
377 | } |
378 | if (DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000))) |
379 | return (EPERM1); |
380 | /* |
381 | * Go through the fields and update if not VNOVAL. |
382 | */ |
383 | if (vap->va_uid != (uid_t)VNOVAL(-1) || vap->va_gid != (gid_t)VNOVAL(-1)) { |
384 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
385 | return (EROFS30); |
386 | error = ufs_chown(vp, vap->va_uid, vap->va_gid, cred); |
387 | if (error) |
388 | return (error); |
389 | } |
390 | if (vap->va_size != VNOVAL(-1)) { |
391 | oldsize = DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size); |
392 | /* |
393 | * Disallow write attempts on read-only file systems; |
394 | * unless the file is a socket, fifo, or a block or |
395 | * character device resident on the file system. |
396 | */ |
397 | switch (vp->v_type) { |
398 | case VDIR: |
399 | return (EISDIR21); |
400 | case VLNK: |
401 | case VREG: |
402 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
403 | return (EROFS30); |
404 | break; |
405 | default: |
406 | break; |
407 | } |
408 | if ((error = UFS_TRUNCATE(ip, vap->va_size, 0, cred)((ip)->i_vtbl->iv_truncate)((ip), (vap->va_size), (0 ), (cred))) != 0) |
409 | return (error); |
410 | if (vap->va_size < oldsize) |
411 | hint |= NOTE_TRUNCATE0x0080; |
412 | } |
413 | if ((vap->va_vaflags & VA_UTIMES_CHANGE0x04) || |
414 | vap->va_atime.tv_nsec != VNOVAL(-1) || |
415 | vap->va_mtime.tv_nsec != VNOVAL(-1)) { |
416 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
417 | return (EROFS30); |
418 | if (cred->cr_uid != DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid) && |
419 | !vnoperm(vp) && |
420 | (error = suser_ucred(cred)) && |
421 | ((vap->va_vaflags & VA_UTIMES_NULL0x01) == 0 || |
422 | (error = VOP_ACCESS(vp, VWRITE00200, cred, ap->a_p)))) |
423 | return (error); |
424 | if (vap->va_mtime.tv_nsec != VNOVAL(-1)) |
425 | ip->i_flag |= IN_CHANGE0x0002 | IN_UPDATE0x0004; |
426 | else if (vap->va_vaflags & VA_UTIMES_CHANGE0x04) |
427 | ip->i_flag |= IN_CHANGE0x0002; |
428 | if (vap->va_atime.tv_nsec != VNOVAL(-1)) { |
429 | if (!(vp->v_mount->mnt_flag & MNT_NOATIME0x00008000) || |
430 | (ip->i_flag & (IN_CHANGE0x0002 | IN_UPDATE0x0004))) |
431 | ip->i_flag |= IN_ACCESS0x0001; |
432 | } |
433 | ufs_itimes(vp); |
434 | if (vap->va_mtime.tv_nsec != VNOVAL(-1)) { |
435 | DIP_ASSIGN(ip, mtime, vap->va_mtime.tv_sec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mtime = (vap->va_mtime.tv_sec); else (ip) ->dinode_u.ffs2_din->di_mtime = (vap->va_mtime.tv_sec ); } while (0); |
436 | DIP_ASSIGN(ip, mtimensec, vap->va_mtime.tv_nsec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mtimensec = (vap->va_mtime.tv_nsec); else (ip)->dinode_u.ffs2_din->di_mtimensec = (vap->va_mtime .tv_nsec); } while (0); |
437 | } |
438 | if (vap->va_atime.tv_nsec != VNOVAL(-1)) { |
439 | DIP_ASSIGN(ip, atime, vap->va_atime.tv_sec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_atime = (vap->va_atime.tv_sec); else (ip) ->dinode_u.ffs2_din->di_atime = (vap->va_atime.tv_sec ); } while (0); |
440 | DIP_ASSIGN(ip, atimensec, vap->va_atime.tv_nsec)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_atimensec = (vap->va_atime.tv_nsec); else (ip)->dinode_u.ffs2_din->di_atimensec = (vap->va_atime .tv_nsec); } while (0); |
441 | } |
442 | error = UFS_UPDATE(ip, 0)((ip)->i_vtbl->iv_update)((ip), (0)); |
443 | if (error) |
444 | return (error); |
445 | } |
446 | error = 0; |
447 | if (vap->va_mode != (mode_t)VNOVAL(-1)) { |
448 | if (vp->v_mount->mnt_flag & MNT_RDONLY0x00000001) |
449 | return (EROFS30); |
450 | error = ufs_chmod(vp, (int)vap->va_mode, cred); |
451 | } |
452 | VN_KNOTE(vp, hint)do { struct klist *__list = (&vp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (hint)); } while ( 0); |
453 | return (error); |
454 | } |
455 | |
456 | /* |
457 | * Change the mode on a file. |
458 | * Inode must be locked before calling. |
459 | */ |
460 | int |
461 | ufs_chmod(struct vnode *vp, int mode, struct ucred *cred) |
462 | { |
463 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
464 | int error; |
465 | |
466 | if (cred->cr_uid != DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid) && |
467 | !vnoperm(vp) && |
468 | (error = suser_ucred(cred))) |
469 | return (error); |
470 | if (cred->cr_uid && !vnoperm(vp)) { |
471 | if (vp->v_type != VDIR && (mode & S_ISTXT0001000)) |
472 | return (EFTYPE79); |
473 | if (!groupmember(DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid), cred) && (mode & ISGID0002000)) |
474 | return (EPERM1); |
475 | } |
476 | DIP_AND(ip, mode, ~ALLPERMS)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode &= (~(0004000|0002000|0001000|0000700 |0000070|0000007)); else (ip)->dinode_u.ffs2_din->di_mode &= (~(0004000|0002000|0001000|0000700|0000070|0000007)); } while (0); |
477 | DIP_OR(ip, mode, mode & ALLPERMS)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode |= (mode & (0004000|0002000|0001000 |0000700|0000070|0000007)); else (ip)->dinode_u.ffs2_din-> di_mode |= (mode & (0004000|0002000|0001000|0000700|0000070 |0000007)); } while (0); |
478 | ip->i_flag |= IN_CHANGE0x0002; |
479 | if ((vp->v_flag & VTEXT0x0002) && (DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode) & S_ISTXT0001000) == 0) |
480 | (void) uvm_vnp_uncache(vp); |
481 | return (0); |
482 | } |
483 | |
484 | /* |
485 | * Perform chown operation on inode ip; |
486 | * inode must be locked prior to call. |
487 | */ |
488 | int |
489 | ufs_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred) |
490 | { |
491 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
492 | uid_t ouid; |
493 | gid_t ogid; |
494 | int error = 0; |
495 | daddr_t change; |
496 | enum ufs_quota_flags quota_flags = 0; |
497 | |
498 | if (uid == (uid_t)VNOVAL(-1)) |
499 | uid = DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid); |
500 | if (gid == (gid_t)VNOVAL(-1)) |
501 | gid = DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid); |
502 | /* |
503 | * If we don't own the file, are trying to change the owner |
504 | * of the file, or are not a member of the target group, |
505 | * the caller must be superuser or the call fails. |
506 | */ |
507 | if ((cred->cr_uid != DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid) || uid != DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid) || |
508 | (gid != DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid) && !groupmember(gid, cred))) && |
509 | !vnoperm(vp) && |
510 | (error = suser_ucred(cred))) |
511 | return (error); |
512 | ogid = DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid); |
513 | ouid = DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid); |
514 | change = DIP(ip, blocks)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_blocks : (ip)->dinode_u.ffs2_din->di_blocks); |
515 | |
516 | if (ouid == uid) |
517 | quota_flags |= UFS_QUOTA_NOUID; |
518 | |
519 | if (ogid == gid) |
520 | quota_flags |= UFS_QUOTA_NOGID; |
521 | |
522 | if ((error = getinoquota(ip)) != 0) |
523 | return (error); |
524 | (void) ufs_quota_free_blocks2(ip, change, cred, quota_flags); |
525 | (void) ufs_quota_free_inode2(ip, cred, quota_flags); |
526 | (void) ufs_quota_delete(ip); |
527 | |
528 | DIP_ASSIGN(ip, gid, gid)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_gid = (gid); else (ip)->dinode_u.ffs2_din ->di_gid = (gid); } while (0); |
529 | DIP_ASSIGN(ip, uid, uid)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_uid = (uid); else (ip)->dinode_u.ffs2_din ->di_uid = (uid); } while (0); |
530 | |
531 | if ((error = getinoquota(ip)) != 0) |
532 | goto error; |
533 | |
534 | if ((error = ufs_quota_alloc_blocks2(ip, change, cred, |
535 | quota_flags)) != 0) |
536 | goto error; |
537 | |
538 | if ((error = ufs_quota_alloc_inode2(ip, cred , |
539 | quota_flags)) != 0) { |
540 | (void)ufs_quota_free_blocks2(ip, change, cred, |
541 | quota_flags); |
542 | goto error; |
543 | } |
544 | |
545 | if (getinoquota(ip)) |
546 | panic("chown: lost quota"); |
547 | |
548 | if (ouid != uid || ogid != gid) |
549 | ip->i_flag |= IN_CHANGE0x0002; |
550 | if (!vnoperm(vp)) { |
551 | if (ouid != uid && cred->cr_uid != 0) |
552 | DIP_AND(ip, mode, ~ISUID)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode &= (~0004000); else (ip)->dinode_u .ffs2_din->di_mode &= (~0004000); } while (0); |
553 | if (ogid != gid && cred->cr_uid != 0) |
554 | DIP_AND(ip, mode, ~ISGID)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode &= (~0002000); else (ip)->dinode_u .ffs2_din->di_mode &= (~0002000); } while (0); |
555 | } |
556 | return (0); |
557 | |
558 | error: |
559 | (void) ufs_quota_delete(ip); |
560 | |
561 | DIP_ASSIGN(ip, gid, ogid)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_gid = (ogid); else (ip)->dinode_u.ffs2_din ->di_gid = (ogid); } while (0); |
562 | DIP_ASSIGN(ip, uid, ouid)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_uid = (ouid); else (ip)->dinode_u.ffs2_din ->di_uid = (ouid); } while (0); |
563 | |
564 | if (getinoquota(ip) == 0) { |
565 | (void) ufs_quota_alloc_blocks2(ip, change, cred, |
566 | quota_flags | UFS_QUOTA_FORCE); |
567 | (void) ufs_quota_alloc_inode2(ip, cred, |
568 | quota_flags | UFS_QUOTA_FORCE); |
569 | (void) getinoquota(ip); |
570 | } |
571 | return (error); |
572 | |
573 | } |
574 | |
575 | /* ARGSUSED */ |
576 | int |
577 | ufs_ioctl(void *v) |
578 | { |
579 | #if 0 |
580 | struct vop_ioctl_args *ap = v; |
581 | #endif |
582 | return (ENOTTY25); |
583 | } |
584 | |
585 | int |
586 | ufs_poll(void *v) |
587 | { |
588 | struct vop_poll_args *ap = v; |
589 | |
590 | /* |
591 | * We should really check to see if I/O is possible. |
592 | */ |
593 | return (ap->a_events & (POLLIN0x0001 | POLLOUT0x0004 | POLLRDNORM0x0040 | POLLWRNORM0x0004)); |
594 | } |
595 | |
596 | int |
597 | ufs_remove(void *v) |
598 | { |
599 | struct vop_remove_args *ap = v; |
600 | struct inode *ip; |
601 | struct vnode *vp = ap->a_vp; |
602 | struct vnode *dvp = ap->a_dvp; |
603 | int error; |
604 | |
605 | ip = VTOI(vp)((struct inode *)(vp)->v_data); |
606 | if (vp->v_type == VDIR || (DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000))) || |
607 | (DIP(VTOI(dvp), flags)(((((struct inode *)(dvp)->v_data))->i_ump->um_fstype == 1) ? (((struct inode *)(dvp)->v_data))->dinode_u.ffs1_din ->di_flags : (((struct inode *)(dvp)->v_data))->dinode_u .ffs2_din->di_flags) & APPEND(0x00000004 | 0x00040000))) { |
608 | error = EPERM1; |
609 | goto out; |
610 | } |
611 | error = ufs_dirremove(dvp, ip, ap->a_cnp->cn_flags, 0); |
612 | VN_KNOTE(vp, NOTE_DELETE)do { struct klist *__list = (&vp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0001)); } while (0); |
613 | VN_KNOTE(dvp, NOTE_WRITE)do { struct klist *__list = (&dvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002)); } while (0); |
614 | out: |
615 | if (dvp == vp) |
616 | vrele(vp); |
617 | else |
618 | vput(vp); |
619 | vput(dvp); |
620 | return (error); |
621 | } |
622 | |
623 | /* |
624 | * link vnode call |
625 | */ |
626 | int |
627 | ufs_link(void *v) |
628 | { |
629 | struct vop_link_args *ap = v; |
630 | struct vnode *dvp = ap->a_dvp; |
631 | struct vnode *vp = ap->a_vp; |
632 | struct componentname *cnp = ap->a_cnp; |
633 | struct inode *ip; |
634 | struct direct newdir; |
635 | int error; |
636 | |
637 | #ifdef DIAGNOSTIC1 |
638 | if ((cnp->cn_flags & HASBUF0x000400) == 0) |
639 | panic("ufs_link: no name"); |
640 | #endif |
641 | if (vp->v_type == VDIR) { |
642 | VOP_ABORTOP(dvp, cnp); |
643 | error = EPERM1; |
644 | goto out2; |
645 | } |
646 | if (dvp->v_mount != vp->v_mount) { |
647 | VOP_ABORTOP(dvp, cnp); |
648 | error = EXDEV18; |
649 | goto out2; |
650 | } |
651 | if (dvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE0x0001UL))) { |
652 | VOP_ABORTOP(dvp, cnp); |
653 | goto out2; |
654 | } |
655 | ip = VTOI(vp)((struct inode *)(vp)->v_data); |
656 | if ((nlink_t) DIP(ip, nlink)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_nlink : (ip)->dinode_u.ffs2_din->di_nlink) >= LINK_MAX32767) { |
657 | VOP_ABORTOP(dvp, cnp); |
658 | error = EMLINK31; |
659 | goto out1; |
660 | } |
661 | if (DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000))) { |
662 | VOP_ABORTOP(dvp, cnp); |
663 | error = EPERM1; |
664 | goto out1; |
665 | } |
666 | ip->i_effnlink++; |
667 | DIP_ADD(ip, nlink, 1)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink += (1); else (ip)->dinode_u.ffs2_din ->di_nlink += (1); } while (0); |
668 | ip->i_flag |= IN_CHANGE0x0002; |
669 | if (DOINGSOFTDEP(vp)((vp)->v_mount->mnt_flag & 0x04000000)) |
670 | softdep_change_linkcnt(ip, 0); |
671 | if ((error = UFS_UPDATE(ip, !DOINGSOFTDEP(vp))((ip)->i_vtbl->iv_update)((ip), (!((vp)->v_mount-> mnt_flag & 0x04000000)))) == 0) { |
672 | ufs_makedirentry(ip, cnp, &newdir); |
673 | error = ufs_direnter(dvp, vp, &newdir, cnp, NULL((void *)0)); |
674 | } |
675 | if (error) { |
676 | ip->i_effnlink--; |
677 | DIP_ADD(ip, nlink, -1)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink += (-1); else (ip)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
678 | ip->i_flag |= IN_CHANGE0x0002; |
679 | if (DOINGSOFTDEP(vp)((vp)->v_mount->mnt_flag & 0x04000000)) |
680 | softdep_change_linkcnt(ip, 0); |
681 | } |
682 | pool_put(&namei_pool, cnp->cn_pnbuf); |
683 | VN_KNOTE(vp, NOTE_LINK)do { struct klist *__list = (&vp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0010)); } while (0); |
684 | VN_KNOTE(dvp, NOTE_WRITE)do { struct klist *__list = (&dvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002)); } while (0); |
685 | out1: |
686 | if (dvp != vp) |
687 | VOP_UNLOCK(vp); |
688 | out2: |
689 | vput(dvp); |
690 | return (error); |
691 | } |
692 | |
693 | /* |
694 | * Rename system call. |
695 | * rename("foo", "bar"); |
696 | * is essentially |
697 | * unlink("bar"); |
698 | * link("foo", "bar"); |
699 | * unlink("foo"); |
700 | * but ``atomically''. Can't do full commit without saving state in the |
701 | * inode on disk which isn't feasible at this time. Best we can do is |
702 | * always guarantee the target exists. |
703 | * |
704 | * Basic algorithm is: |
705 | * |
706 | * 1) Bump link count on source while we're linking it to the |
707 | * target. This also ensure the inode won't be deleted out |
708 | * from underneath us while we work (it may be truncated by |
709 | * a concurrent `trunc' or `open' for creation). |
710 | * 2) Link source to destination. If destination already exists, |
711 | * delete it first. |
712 | * 3) Unlink source reference to inode if still around. If a |
713 | * directory was moved and the parent of the destination |
714 | * is different from the source, patch the ".." entry in the |
715 | * directory. |
716 | */ |
717 | int |
718 | ufs_rename(void *v) |
719 | { |
720 | struct vop_rename_args *ap = v; |
721 | struct vnode *tvp = ap->a_tvp; |
722 | struct vnode *tdvp = ap->a_tdvp; |
723 | struct vnode *fvp = ap->a_fvp; |
724 | struct vnode *fdvp = ap->a_fdvp; |
725 | struct componentname *tcnp = ap->a_tcnp; |
726 | struct componentname *fcnp = ap->a_fcnp; |
727 | struct inode *ip, *xp, *dp; |
728 | struct direct newdir; |
729 | int doingdirectory = 0, oldparent = 0, newparent = 0; |
730 | int error = 0; |
731 | |
732 | #ifdef DIAGNOSTIC1 |
733 | if ((tcnp->cn_flags & HASBUF0x000400) == 0 || |
734 | (fcnp->cn_flags & HASBUF0x000400) == 0) |
735 | panic("ufs_rename: no name"); |
736 | #endif |
737 | /* |
738 | * Check for cross-device rename. |
739 | */ |
740 | if ((fvp->v_mount != tdvp->v_mount) || |
741 | (tvp && (fvp->v_mount != tvp->v_mount))) { |
742 | error = EXDEV18; |
743 | abortit: |
744 | VOP_ABORTOP(tdvp, tcnp); |
745 | if (tdvp == tvp) |
746 | vrele(tdvp); |
747 | else |
748 | vput(tdvp); |
749 | if (tvp) |
750 | vput(tvp); |
751 | VOP_ABORTOP(fdvp, fcnp); |
752 | vrele(fdvp); |
753 | vrele(fvp); |
754 | return (error); |
755 | } |
756 | |
757 | if (tvp && ((DIP(VTOI(tvp), flags)(((((struct inode *)(tvp)->v_data))->i_ump->um_fstype == 1) ? (((struct inode *)(tvp)->v_data))->dinode_u.ffs1_din ->di_flags : (((struct inode *)(tvp)->v_data))->dinode_u .ffs2_din->di_flags) & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000))) || |
758 | (DIP(VTOI(tdvp), flags)(((((struct inode *)(tdvp)->v_data))->i_ump->um_fstype == 1) ? (((struct inode *)(tdvp)->v_data))->dinode_u.ffs1_din ->di_flags : (((struct inode *)(tdvp)->v_data))->dinode_u .ffs2_din->di_flags) & APPEND(0x00000004 | 0x00040000)))) { |
759 | error = EPERM1; |
760 | goto abortit; |
761 | } |
762 | |
763 | /* |
764 | * Check if just deleting a link name or if we've lost a race. |
765 | * If another process completes the same rename after we've looked |
766 | * up the source and have blocked looking up the target, then the |
767 | * source and target inodes may be identical now although the |
768 | * names were never linked. |
769 | */ |
770 | if (fvp == tvp) { |
771 | if (fvp->v_type == VDIR) { |
772 | /* |
773 | * Linked directories are impossible, so we must |
774 | * have lost the race. Pretend that the rename |
775 | * completed before the lookup. |
776 | */ |
777 | error = ENOENT2; |
778 | goto abortit; |
779 | } |
780 | |
781 | /* Release destination completely. */ |
782 | VOP_ABORTOP(tdvp, tcnp); |
783 | vput(tdvp); |
784 | vput(tvp); |
785 | |
786 | /* |
787 | * Delete source. There is another race now that everything |
788 | * is unlocked, but this doesn't cause any new complications. |
789 | * relookup() may find a file that is unrelated to the |
790 | * original one, or it may fail. Too bad. |
791 | */ |
792 | vrele(fvp); |
793 | fcnp->cn_flags &= ~MODMASK0x00fc; |
794 | fcnp->cn_flags |= LOCKPARENT0x0008 | LOCKLEAF0x0004; |
795 | if ((fcnp->cn_flags & SAVESTART0x001000) == 0) |
796 | panic("ufs_rename: lost from startdir"); |
797 | fcnp->cn_nameiop = DELETE2; |
798 | if ((error = vfs_relookup(fdvp, &fvp, fcnp)) != 0) |
799 | return (error); /* relookup did vrele() */ |
800 | vrele(fdvp); |
801 | return (VOP_REMOVE(fdvp, fvp, fcnp)); |
802 | } |
803 | |
804 | if ((error = vn_lock(fvp, LK_EXCLUSIVE0x0001UL)) != 0) |
805 | goto abortit; |
806 | |
807 | /* fvp, tdvp, tvp now locked */ |
808 | dp = VTOI(fdvp)((struct inode *)(fdvp)->v_data); |
809 | ip = VTOI(fvp)((struct inode *)(fvp)->v_data); |
810 | if ((nlink_t) DIP(ip, nlink)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_nlink : (ip)->dinode_u.ffs2_din->di_nlink) >= LINK_MAX32767) { |
811 | VOP_UNLOCK(fvp); |
812 | error = EMLINK31; |
813 | goto abortit; |
814 | } |
815 | if ((DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000))) || |
816 | (DIP(dp, flags)(((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_flags : (dp)->dinode_u.ffs2_din->di_flags) & APPEND(0x00000004 | 0x00040000))) { |
817 | VOP_UNLOCK(fvp); |
818 | error = EPERM1; |
819 | goto abortit; |
820 | } |
821 | if ((DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode) & IFMT0170000) == IFDIR0040000) { |
822 | error = VOP_ACCESS(fvp, VWRITE00200, tcnp->cn_cred, tcnp->cn_proc); |
823 | if (!error && tvp) |
824 | error = VOP_ACCESS(tvp, VWRITE00200, tcnp->cn_cred, tcnp->cn_proc); |
825 | if (error) { |
826 | VOP_UNLOCK(fvp); |
827 | error = EACCES13; |
828 | goto abortit; |
829 | } |
830 | /* |
831 | * Avoid ".", "..", and aliases of "." for obvious reasons. |
832 | */ |
833 | if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') || |
834 | dp == ip || |
835 | (fcnp->cn_flags & ISDOTDOT0x002000) || |
836 | (tcnp->cn_flags & ISDOTDOT0x002000) || |
837 | (ip->i_flag & IN_RENAME0x0010)) { |
838 | VOP_UNLOCK(fvp); |
839 | error = EINVAL22; |
840 | goto abortit; |
841 | } |
842 | ip->i_flag |= IN_RENAME0x0010; |
843 | oldparent = dp->i_number; |
844 | doingdirectory = 1; |
845 | } |
846 | VN_KNOTE(fdvp, NOTE_WRITE)do { struct klist *__list = (&fdvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002)); } while (0); /* XXX right place? */ |
847 | |
848 | /* |
849 | * When the target exists, both the directory |
850 | * and target vnodes are returned locked. |
851 | */ |
852 | dp = VTOI(tdvp)((struct inode *)(tdvp)->v_data); |
853 | xp = NULL((void *)0); |
854 | if (tvp) |
855 | xp = VTOI(tvp)((struct inode *)(tvp)->v_data); |
856 | |
857 | /* |
858 | * 1) Bump link count while we're moving stuff |
859 | * around. If we crash somewhere before |
860 | * completing our work, the link count |
861 | * may be wrong, but correctable. |
862 | */ |
863 | ip->i_effnlink++; |
864 | DIP_ADD(ip, nlink, 1)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink += (1); else (ip)->dinode_u.ffs2_din ->di_nlink += (1); } while (0); |
865 | ip->i_flag |= IN_CHANGE0x0002; |
866 | if (DOINGSOFTDEP(fvp)((fvp)->v_mount->mnt_flag & 0x04000000)) |
867 | softdep_change_linkcnt(ip, 0); |
868 | if ((error = UFS_UPDATE(ip, !DOINGSOFTDEP(fvp))((ip)->i_vtbl->iv_update)((ip), (!((fvp)->v_mount-> mnt_flag & 0x04000000)))) != 0) { |
869 | VOP_UNLOCK(fvp); |
870 | goto bad; |
871 | } |
872 | |
873 | /* |
874 | * If ".." must be changed (ie the directory gets a new |
875 | * parent) then the source directory must not be in the |
876 | * directory hierarchy above the target, as this would |
877 | * orphan everything below the source directory. Also |
878 | * the user must have write permission in the source so |
879 | * as to be able to change "..". We must repeat the call |
880 | * to namei, as the parent directory is unlocked by the |
881 | * call to checkpath(). |
882 | */ |
883 | error = VOP_ACCESS(fvp, VWRITE00200, tcnp->cn_cred, tcnp->cn_proc); |
884 | VOP_UNLOCK(fvp); |
885 | |
886 | /* tdvp and tvp locked */ |
887 | if (oldparent != dp->i_number) |
888 | newparent = dp->i_number; |
889 | if (doingdirectory && newparent) { |
890 | if (error) /* write access check above */ |
891 | goto bad; |
892 | if (xp != NULL((void *)0)) |
893 | vput(tvp); |
894 | /* |
895 | * Compensate for the reference ufs_checkpath() loses. |
896 | */ |
897 | vref(tdvp); |
898 | /* Only tdvp is locked */ |
899 | if ((error = ufs_checkpath(ip, dp, tcnp->cn_cred)) != 0) { |
900 | vrele(tdvp); |
901 | goto out; |
902 | } |
903 | if ((tcnp->cn_flags & SAVESTART0x001000) == 0) |
904 | panic("ufs_rename: lost to startdir"); |
905 | if ((error = vfs_relookup(tdvp, &tvp, tcnp)) != 0) |
906 | goto out; |
907 | vrele(tdvp); /* relookup() acquired a reference */ |
908 | dp = VTOI(tdvp)((struct inode *)(tdvp)->v_data); |
909 | xp = NULL((void *)0); |
910 | if (tvp) |
911 | xp = VTOI(tvp)((struct inode *)(tvp)->v_data); |
912 | } |
913 | /* |
914 | * 2) If target doesn't exist, link the target |
915 | * to the source and unlink the source. |
916 | * Otherwise, rewrite the target directory |
917 | * entry to reference the source inode and |
918 | * expunge the original entry's existence. |
919 | */ |
920 | if (xp == NULL((void *)0)) { |
921 | if (dp->i_dev != ip->i_dev) |
922 | panic("rename: EXDEV"); |
923 | /* |
924 | * Account for ".." in new directory. |
925 | * When source and destination have the same |
926 | * parent we don't fool with the link count. |
927 | */ |
928 | if (doingdirectory && newparent) { |
929 | if ((nlink_t) DIP(dp, nlink)(((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_nlink : (dp)->dinode_u.ffs2_din->di_nlink) >= LINK_MAX32767) { |
930 | error = EMLINK31; |
931 | goto bad; |
932 | } |
933 | dp->i_effnlink++; |
934 | DIP_ADD(dp, nlink, 1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (1); else (dp)->dinode_u.ffs2_din ->di_nlink += (1); } while (0); |
935 | dp->i_flag |= IN_CHANGE0x0002; |
936 | if (DOINGSOFTDEP(tdvp)((tdvp)->v_mount->mnt_flag & 0x04000000)) |
937 | softdep_change_linkcnt(dp, 0); |
938 | if ((error = UFS_UPDATE(dp, !DOINGSOFTDEP(tdvp))((dp)->i_vtbl->iv_update)((dp), (!((tdvp)->v_mount-> mnt_flag & 0x04000000)))) |
939 | != 0) { |
940 | dp->i_effnlink--; |
941 | DIP_ADD(dp, nlink, -1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (-1); else (dp)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
942 | dp->i_flag |= IN_CHANGE0x0002; |
943 | if (DOINGSOFTDEP(tdvp)((tdvp)->v_mount->mnt_flag & 0x04000000)) |
944 | softdep_change_linkcnt(dp, 0); |
945 | goto bad; |
946 | } |
947 | } |
948 | ufs_makedirentry(ip, tcnp, &newdir); |
949 | if ((error = ufs_direnter(tdvp, NULL((void *)0), &newdir, tcnp, NULL((void *)0))) != 0) { |
950 | if (doingdirectory && newparent) { |
951 | dp->i_effnlink--; |
952 | DIP_ADD(dp, nlink, -1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (-1); else (dp)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
953 | dp->i_flag |= IN_CHANGE0x0002; |
954 | if (DOINGSOFTDEP(tdvp)((tdvp)->v_mount->mnt_flag & 0x04000000)) |
955 | softdep_change_linkcnt(dp, 0); |
956 | (void)UFS_UPDATE(dp, 1)((dp)->i_vtbl->iv_update)((dp), (1)); |
957 | } |
958 | goto bad; |
959 | } |
960 | VN_KNOTE(tdvp, NOTE_WRITE)do { struct klist *__list = (&tdvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002)); } while (0); |
961 | vput(tdvp); |
962 | } else { |
963 | if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev) |
964 | panic("rename: EXDEV"); |
965 | /* |
966 | * Short circuit rename(foo, foo). |
967 | */ |
968 | if (xp->i_number == ip->i_number) |
969 | panic("ufs_rename: same file"); |
970 | /* |
971 | * If the parent directory is "sticky", then the user must |
972 | * own the parent directory, or the destination of the rename, |
973 | * otherwise the destination may not be changed (except by |
974 | * root). This implements append-only directories. |
975 | */ |
976 | if ((DIP(dp, mode)(((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_mode : (dp)->dinode_u.ffs2_din->di_mode) & S_ISTXT0001000) && tcnp->cn_cred->cr_uid != 0 && |
977 | tcnp->cn_cred->cr_uid != DIP(dp, uid)(((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_uid : (dp)->dinode_u.ffs2_din->di_uid) && |
978 | DIP(xp, uid )(((xp)->i_ump->um_fstype == 1) ? (xp)->dinode_u.ffs1_din ->di_uid : (xp)->dinode_u.ffs2_din->di_uid)!= tcnp->cn_cred->cr_uid && |
979 | !vnoperm(tdvp)) { |
980 | error = EPERM1; |
981 | goto bad; |
982 | } |
983 | /* |
984 | * Target must be empty if a directory and have no links |
985 | * to it. Also, ensure source and target are compatible |
986 | * (both directories, or both not directories). |
987 | */ |
988 | if ((DIP(xp, mode)(((xp)->i_ump->um_fstype == 1) ? (xp)->dinode_u.ffs1_din ->di_mode : (xp)->dinode_u.ffs2_din->di_mode) & IFMT0170000) == IFDIR0040000) { |
989 | if (xp->i_effnlink > 2 || |
990 | !ufs_dirempty(xp, dp->i_number, tcnp->cn_cred)) { |
991 | error = ENOTEMPTY66; |
992 | goto bad; |
993 | } |
994 | if (!doingdirectory) { |
995 | error = ENOTDIR20; |
996 | goto bad; |
997 | } |
998 | cache_purge(tdvp); |
999 | } else if (doingdirectory) { |
1000 | error = EISDIR21; |
1001 | goto bad; |
1002 | } |
1003 | |
1004 | if ((error = ufs_dirrewrite(dp, xp, ip->i_number, |
1005 | IFTODT(DIP(ip, mode))((((((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode)) & 0170000) >> 12), (doingdirectory && newparent) ? |
1006 | newparent : doingdirectory)) != 0) |
1007 | goto bad; |
1008 | if (doingdirectory) { |
1009 | if (!newparent) { |
1010 | dp->i_effnlink--; |
1011 | if (DOINGSOFTDEP(tdvp)((tdvp)->v_mount->mnt_flag & 0x04000000)) |
1012 | softdep_change_linkcnt(dp, 0); |
1013 | } |
1014 | xp->i_effnlink--; |
1015 | if (DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) |
1016 | softdep_change_linkcnt(xp, 0); |
1017 | } |
1018 | if (doingdirectory && !DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) { |
1019 | /* |
1020 | * Truncate inode. The only stuff left in the directory |
1021 | * is "." and "..". The "." reference is inconsequential |
1022 | * since we are quashing it. We have removed the "." |
1023 | * reference and the reference in the parent directory, |
1024 | * but there may be other hard links. The soft |
1025 | * dependency code will arrange to do these operations |
1026 | * after the parent directory entry has been deleted on |
1027 | * disk, so when running with that code we avoid doing |
1028 | * them now. |
1029 | */ |
1030 | if (!newparent) { |
1031 | DIP_ADD(dp, nlink, -1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (-1); else (dp)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
1032 | dp->i_flag |= IN_CHANGE0x0002; |
1033 | } |
1034 | |
1035 | DIP_ADD(xp, nlink, -1)do { if ((xp)->i_ump->um_fstype == 1) (xp)->dinode_u .ffs1_din->di_nlink += (-1); else (xp)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
1036 | xp->i_flag |= IN_CHANGE0x0002; |
1037 | if ((error = UFS_TRUNCATE(VTOI(tvp), (off_t)0, IO_SYNC,((((struct inode *)(tvp)->v_data))->i_vtbl->iv_truncate )((((struct inode *)(tvp)->v_data)), ((off_t)0), (0x04), ( tcnp->cn_cred)) |
1038 | tcnp->cn_cred)((((struct inode *)(tvp)->v_data))->i_vtbl->iv_truncate )((((struct inode *)(tvp)->v_data)), ((off_t)0), (0x04), ( tcnp->cn_cred))) != 0) |
1039 | goto bad; |
1040 | } |
1041 | VN_KNOTE(tdvp, NOTE_WRITE)do { struct klist *__list = (&tdvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002)); } while (0); |
1042 | vput(tdvp); |
1043 | VN_KNOTE(tvp, NOTE_DELETE)do { struct klist *__list = (&tvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0001)); } while (0); |
1044 | vput(tvp); |
1045 | xp = NULL((void *)0); |
1046 | } |
1047 | |
1048 | /* |
1049 | * 3) Unlink the source. |
1050 | */ |
1051 | fcnp->cn_flags &= ~MODMASK0x00fc; |
1052 | fcnp->cn_flags |= LOCKPARENT0x0008 | LOCKLEAF0x0004; |
1053 | if ((fcnp->cn_flags & SAVESTART0x001000) == 0) |
1054 | panic("ufs_rename: lost from startdir"); |
1055 | if ((error = vfs_relookup(fdvp, &fvp, fcnp)) != 0) { |
1056 | vrele(ap->a_fvp); |
1057 | return (error); |
1058 | } |
1059 | vrele(fdvp); |
1060 | if (fvp == NULL((void *)0)) { |
1061 | /* |
1062 | * From name has disappeared. |
1063 | */ |
1064 | if (doingdirectory) |
1065 | panic("ufs_rename: lost dir entry"); |
1066 | vrele(ap->a_fvp); |
1067 | return (0); |
1068 | } |
1069 | |
1070 | xp = VTOI(fvp)((struct inode *)(fvp)->v_data); |
1071 | dp = VTOI(fdvp)((struct inode *)(fdvp)->v_data); |
1072 | |
1073 | /* |
1074 | * Ensure that the directory entry still exists and has not |
1075 | * changed while the new name has been entered. If the source is |
1076 | * a file then the entry may have been unlinked or renamed. In |
1077 | * either case there is no further work to be done. If the source |
1078 | * is a directory then it cannot have been rmdir'ed; the IN_RENAME |
1079 | * flag ensures that it cannot be moved by another rename or removed |
1080 | * by a rmdir. |
1081 | */ |
1082 | if (xp != ip) { |
1083 | if (doingdirectory) |
1084 | panic("ufs_rename: lost dir entry"); |
1085 | } else { |
1086 | /* |
1087 | * If the source is a directory with a |
1088 | * new parent, the link count of the old |
1089 | * parent directory must be decremented |
1090 | * and ".." set to point to the new parent. |
1091 | */ |
1092 | if (doingdirectory && newparent) { |
1093 | xp->i_offset = mastertemplate.dot_reclen; |
1094 | ufs_dirrewrite(xp, dp, newparent, DT_DIR4, 0); |
1095 | cache_purge(fdvp); |
1096 | } |
1097 | error = ufs_dirremove(fdvp, xp, fcnp->cn_flags, 0); |
1098 | xp->i_flag &= ~IN_RENAME0x0010; |
1099 | } |
1100 | VN_KNOTE(fvp, NOTE_RENAME)do { struct klist *__list = (&fvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0020)); } while (0); |
1101 | if (dp) |
1102 | vput(fdvp); |
1103 | if (xp) |
1104 | vput(fvp); |
1105 | vrele(ap->a_fvp); |
1106 | return (error); |
1107 | |
1108 | bad: |
1109 | if (xp) |
1110 | vput(ITOV(xp)((xp)->i_vnode)); |
1111 | vput(ITOV(dp)((dp)->i_vnode)); |
1112 | out: |
1113 | vrele(fdvp); |
1114 | if (doingdirectory) |
1115 | ip->i_flag &= ~IN_RENAME0x0010; |
1116 | if (vn_lock(fvp, LK_EXCLUSIVE0x0001UL) == 0) { |
1117 | ip->i_effnlink--; |
1118 | DIP_ADD(ip, nlink, -1)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink += (-1); else (ip)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
1119 | ip->i_flag |= IN_CHANGE0x0002; |
1120 | ip->i_flag &= ~IN_RENAME0x0010; |
1121 | if (DOINGSOFTDEP(fvp)((fvp)->v_mount->mnt_flag & 0x04000000)) |
1122 | softdep_change_linkcnt(ip, 0); |
1123 | vput(fvp); |
1124 | } else |
1125 | vrele(fvp); |
1126 | return (error); |
1127 | } |
1128 | |
1129 | /* |
1130 | * Mkdir system call |
1131 | */ |
1132 | int |
1133 | ufs_mkdir(void *v) |
1134 | { |
1135 | struct vop_mkdir_args *ap = v; |
1136 | struct vnode *dvp = ap->a_dvp; |
1137 | struct vattr *vap = ap->a_vap; |
1138 | struct componentname *cnp = ap->a_cnp; |
1139 | struct inode *ip, *dp; |
1140 | struct vnode *tvp; |
1141 | struct buf *bp; |
1142 | struct direct newdir; |
1143 | struct dirtemplate dirtemplate, *dtp; |
1144 | int error, dmode, blkoff; |
1145 | |
1146 | #ifdef DIAGNOSTIC1 |
1147 | if ((cnp->cn_flags & HASBUF0x000400) == 0) |
1148 | panic("ufs_mkdir: no name"); |
1149 | #endif |
1150 | dp = VTOI(dvp)((struct inode *)(dvp)->v_data); |
1151 | if ((nlink_t) DIP(dp, nlink)(((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_nlink : (dp)->dinode_u.ffs2_din->di_nlink) >= LINK_MAX32767) { |
1152 | error = EMLINK31; |
1153 | goto out; |
1154 | } |
1155 | dmode = vap->va_mode & 0777; |
1156 | dmode |= IFDIR0040000; |
1157 | /* |
1158 | * Must simulate part of ufs_makeinode here to acquire the inode, |
1159 | * but not have it entered in the parent directory. The entry is |
1160 | * made later after writing "." and ".." entries. |
1161 | */ |
1162 | if ((error = UFS_INODE_ALLOC(dp, dmode, cnp->cn_cred, &tvp)((dp)->i_vtbl->iv_inode_alloc)((dp), (dmode), (cnp-> cn_cred), (&tvp))) != 0) |
1163 | goto out; |
1164 | |
1165 | ip = VTOI(tvp)((struct inode *)(tvp)->v_data); |
1166 | |
1167 | DIP_ASSIGN(ip, uid, cnp->cn_cred->cr_uid)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_uid = (cnp->cn_cred->cr_uid); else (ip )->dinode_u.ffs2_din->di_uid = (cnp->cn_cred->cr_uid ); } while (0); |
1168 | DIP_ASSIGN(ip, gid, DIP(dp, gid))do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_gid = ((((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din->di_gid : (dp)->dinode_u.ffs2_din ->di_gid)); else (ip)->dinode_u.ffs2_din->di_gid = ( (((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_gid : (dp)->dinode_u.ffs2_din->di_gid)); } while (0); |
1169 | |
1170 | if ((error = getinoquota(ip)) || |
1171 | (error = ufs_quota_alloc_inode(ip, cnp->cn_cred)ufs_quota_alloc_inode2(ip, cnp->cn_cred, 0))) { |
1172 | pool_put(&namei_pool, cnp->cn_pnbuf); |
1173 | UFS_INODE_FREE(ip, ip->i_number, dmode)((ip)->i_vtbl->iv_inode_free)((ip), (ip->i_number), ( dmode)); |
1174 | vput(tvp); |
1175 | vput(dvp); |
1176 | return (error); |
1177 | } |
1178 | |
1179 | ip->i_flag |= IN_ACCESS0x0001 | IN_CHANGE0x0002 | IN_UPDATE0x0004; |
1180 | DIP_ASSIGN(ip, mode, dmode)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode = (dmode); else (ip)->dinode_u.ffs2_din ->di_mode = (dmode); } while (0); |
1181 | tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */ |
1182 | ip->i_effnlink = 2; |
1183 | DIP_ASSIGN(ip, nlink, 2)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink = (2); else (ip)->dinode_u.ffs2_din ->di_nlink = (2); } while (0); |
1184 | if (DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) |
1185 | softdep_change_linkcnt(ip, 0); |
1186 | |
1187 | /* |
1188 | * Bump link count in parent directory to reflect work done below. |
1189 | * Should be done before reference is create so cleanup is |
1190 | * possible if we crash. |
1191 | */ |
1192 | dp->i_effnlink++; |
1193 | DIP_ADD(dp, nlink, 1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (1); else (dp)->dinode_u.ffs2_din ->di_nlink += (1); } while (0); |
1194 | dp->i_flag |= IN_CHANGE0x0002; |
1195 | if (DOINGSOFTDEP(dvp)((dvp)->v_mount->mnt_flag & 0x04000000)) |
1196 | softdep_change_linkcnt(dp, 0); |
1197 | if ((error = UFS_UPDATE(dp, !DOINGSOFTDEP(dvp))((dp)->i_vtbl->iv_update)((dp), (!((dvp)->v_mount-> mnt_flag & 0x04000000)))) != 0) |
1198 | goto bad; |
1199 | |
1200 | /* |
1201 | * Initialize directory with "." and ".." from static template. |
1202 | */ |
1203 | if (dp->i_ump->um_maxsymlinklen > 0) |
1204 | dtp = &mastertemplate; |
1205 | else |
1206 | dtp = (struct dirtemplate *)&omastertemplate; |
1207 | dirtemplate = *dtp; |
1208 | dirtemplate.dot_ino = ip->i_number; |
1209 | dirtemplate.dotdot_ino = dp->i_number; |
1210 | |
1211 | if ((error = UFS_BUF_ALLOC(ip, (off_t)0, DIRBLKSIZ, cnp->cn_cred,((ip)->i_vtbl->iv_buf_alloc)((ip), ((off_t)0), ((1 << 9)), (cnp->cn_cred), (0x01), (&bp)) |
1212 | B_CLRBUF, &bp)((ip)->i_vtbl->iv_buf_alloc)((ip), ((off_t)0), ((1 << 9)), (cnp->cn_cred), (0x01), (&bp))) != 0) |
1213 | goto bad; |
1214 | DIP_ASSIGN(ip, size, DIRBLKSIZ)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_size = ((1 << 9)); else (ip)->dinode_u .ffs2_din->di_size = ((1 << 9)); } while (0); |
1215 | ip->i_flag |= IN_CHANGE0x0002 | IN_UPDATE0x0004; |
1216 | uvm_vnp_setsize(tvp, DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size)); |
1217 | memcpy(bp->b_data, &dirtemplate, sizeof(dirtemplate))__builtin_memcpy((bp->b_data), (&dirtemplate), (sizeof (dirtemplate))); |
1218 | if (DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) { |
1219 | /* |
1220 | * Ensure that the entire newly allocated block is a |
1221 | * valid directory so that future growth within the |
1222 | * block does not have to ensure that the block is |
1223 | * written before the inode |
1224 | */ |
1225 | blkoff = DIRBLKSIZ(1 << 9); |
1226 | while (blkoff < bp->b_bcount) { |
1227 | ((struct direct *) |
1228 | (bp->b_data + blkoff))->d_reclen = DIRBLKSIZ(1 << 9); |
1229 | blkoff += DIRBLKSIZ(1 << 9); |
1230 | } |
1231 | } |
1232 | if ((error = UFS_UPDATE(ip, !DOINGSOFTDEP(tvp))((ip)->i_vtbl->iv_update)((ip), (!((tvp)->v_mount-> mnt_flag & 0x04000000)))) != 0) { |
1233 | (void)VOP_BWRITE(bp); |
1234 | goto bad; |
1235 | } |
1236 | |
1237 | /* |
1238 | * Directory set up, now install its entry in the parent directory. |
1239 | * |
1240 | * If we are not doing soft dependencies, then we must write out the |
1241 | * buffer containing the new directory body before entering the new |
1242 | * name in the parent. If we are doing soft dependencies, then the |
1243 | * buffer containing the new directory body will be passed to and |
1244 | * released in the soft dependency code after the code has attached |
1245 | * an appropriate ordering dependency to the buffer which ensures that |
1246 | * the buffer is written before the new name is written in the parent. |
1247 | */ |
1248 | if (!DOINGSOFTDEP(dvp)((dvp)->v_mount->mnt_flag & 0x04000000) && ((error = VOP_BWRITE(bp)) != 0)) |
1249 | goto bad; |
1250 | ufs_makedirentry(ip, cnp, &newdir); |
1251 | error = ufs_direnter(dvp, tvp, &newdir, cnp, bp); |
1252 | |
1253 | bad: |
1254 | if (error == 0) { |
1255 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK)do { struct klist *__list = (&dvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002 | 0x0010) ); } while (0); |
1256 | *ap->a_vpp = tvp; |
1257 | } else { |
1258 | dp->i_effnlink--; |
1259 | DIP_ADD(dp, nlink, -1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (-1); else (dp)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
1260 | dp->i_flag |= IN_CHANGE0x0002; |
1261 | if (DOINGSOFTDEP(dvp)((dvp)->v_mount->mnt_flag & 0x04000000)) |
1262 | softdep_change_linkcnt(dp, 0); |
1263 | /* |
1264 | * No need to do an explicit VOP_TRUNCATE here, vrele will |
1265 | * do this for us because we set the link count to 0. |
1266 | */ |
1267 | ip->i_effnlink = 0; |
1268 | DIP_ASSIGN(ip, nlink, 0)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink = (0); else (ip)->dinode_u.ffs2_din ->di_nlink = (0); } while (0); |
1269 | ip->i_flag |= IN_CHANGE0x0002; |
1270 | if (DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) |
1271 | softdep_change_linkcnt(ip, 0); |
1272 | vput(tvp); |
1273 | } |
1274 | out: |
1275 | pool_put(&namei_pool, cnp->cn_pnbuf); |
1276 | vput(dvp); |
1277 | |
1278 | return (error); |
1279 | } |
1280 | |
1281 | /* |
1282 | * Rmdir system call. |
1283 | */ |
1284 | int |
1285 | ufs_rmdir(void *v) |
1286 | { |
1287 | struct vop_rmdir_args *ap = v; |
1288 | struct vnode *vp = ap->a_vp; |
1289 | struct vnode *dvp = ap->a_dvp; |
1290 | struct componentname *cnp = ap->a_cnp; |
1291 | struct inode *ip, *dp; |
1292 | int error; |
1293 | |
1294 | ip = VTOI(vp)((struct inode *)(vp)->v_data); |
1295 | dp = VTOI(dvp)((struct inode *)(dvp)->v_data); |
1296 | /* |
1297 | * Do not remove a directory that is in the process of being renamed. |
1298 | * Verify the directory is empty (and valid). Rmdir ".." will not be |
1299 | * valid since ".." will contain a reference to the current directory |
1300 | * and thus be non-empty. |
1301 | */ |
1302 | error = 0; |
Value stored to 'error' is never read | |
1303 | if (ip->i_flag & IN_RENAME0x0010) { |
1304 | error = EINVAL22; |
1305 | goto out; |
1306 | } |
1307 | if (ip->i_effnlink != 2 || |
1308 | !ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) { |
1309 | error = ENOTEMPTY66; |
1310 | goto out; |
1311 | } |
1312 | if ((DIP(dp, flags)(((dp)->i_ump->um_fstype == 1) ? (dp)->dinode_u.ffs1_din ->di_flags : (dp)->dinode_u.ffs2_din->di_flags) & APPEND(0x00000004 | 0x00040000)) || |
1313 | (DIP(ip, flags)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_flags : (ip)->dinode_u.ffs2_din->di_flags) & (IMMUTABLE(0x00000002 | 0x00020000) | APPEND(0x00000004 | 0x00040000)))) { |
1314 | error = EPERM1; |
1315 | goto out; |
1316 | } |
1317 | /* |
1318 | * Delete reference to directory before purging |
1319 | * inode. If we crash in between, the directory |
1320 | * will be reattached to lost+found, |
1321 | */ |
1322 | dp->i_effnlink--; |
1323 | ip->i_effnlink--; |
1324 | if (DOINGSOFTDEP(vp)((vp)->v_mount->mnt_flag & 0x04000000)) { |
1325 | softdep_change_linkcnt(dp, 0); |
1326 | softdep_change_linkcnt(ip, 0); |
1327 | } |
1328 | if ((error = ufs_dirremove(dvp, ip, cnp->cn_flags, 1)) != 0) { |
1329 | dp->i_effnlink++; |
1330 | ip->i_effnlink++; |
1331 | if (DOINGSOFTDEP(vp)((vp)->v_mount->mnt_flag & 0x04000000)) { |
1332 | softdep_change_linkcnt(dp, 0); |
1333 | softdep_change_linkcnt(ip, 0); |
1334 | } |
1335 | goto out; |
1336 | } |
1337 | |
1338 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK)do { struct klist *__list = (&dvp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0002 | 0x0010) ); } while (0); |
1339 | cache_purge(dvp); |
1340 | /* |
1341 | * Truncate inode. The only stuff left in the directory is "." and |
1342 | * "..". The "." reference is inconsequential since we are quashing |
1343 | * it. The soft dependency code will arrange to do these operations |
1344 | * after the parent directory entry has been deleted on disk, so |
1345 | * when running with that code we avoid doing them now. |
1346 | */ |
1347 | if (!DOINGSOFTDEP(vp)((vp)->v_mount->mnt_flag & 0x04000000)) { |
1348 | int ioflag; |
1349 | |
1350 | DIP_ADD(dp, nlink, -1)do { if ((dp)->i_ump->um_fstype == 1) (dp)->dinode_u .ffs1_din->di_nlink += (-1); else (dp)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
1351 | dp->i_flag |= IN_CHANGE0x0002; |
1352 | DIP_ADD(ip, nlink, -1)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink += (-1); else (ip)->dinode_u.ffs2_din ->di_nlink += (-1); } while (0); |
1353 | ip->i_flag |= IN_CHANGE0x0002; |
1354 | ioflag = DOINGASYNC(vp)((vp)->v_mount->mnt_flag & 0x00000040) ? 0 : IO_SYNC0x04; |
1355 | error = UFS_TRUNCATE(ip, (off_t)0, ioflag, cnp->cn_cred)((ip)->i_vtbl->iv_truncate)((ip), ((off_t)0), (ioflag), (cnp->cn_cred)); |
1356 | } |
1357 | cache_purge(vp); |
1358 | #ifdef UFS_DIRHASH1 |
1359 | /* Kill any active hash; i_effnlink == 0, so it will not come back. */ |
1360 | if (ip->i_dirhashinode_ext.dirhash != NULL((void *)0)) |
1361 | ufsdirhash_free(ip); |
1362 | #endif |
1363 | |
1364 | out: |
1365 | VN_KNOTE(vp, NOTE_DELETE)do { struct klist *__list = (&vp->v_selectinfo.si_note ); if (__list != ((void *)0)) knote(__list, (0x0001)); } while (0); |
1366 | vput(dvp); |
1367 | vput(vp); |
1368 | return (error); |
1369 | } |
1370 | |
1371 | /* |
1372 | * symlink -- make a symbolic link |
1373 | */ |
1374 | int |
1375 | ufs_symlink(void *v) |
1376 | { |
1377 | struct vop_symlink_args *ap = v; |
1378 | struct vnode *vp, **vpp = ap->a_vpp; |
1379 | struct inode *ip; |
1380 | int len, error; |
1381 | |
1382 | error = ufs_makeinode(IFLNK0120000 | ap->a_vap->va_mode, ap->a_dvp, |
1383 | vpp, ap->a_cnp); |
1384 | if (error) { |
1385 | vput(ap->a_dvp); |
1386 | return (error); |
1387 | } |
1388 | VN_KNOTE(ap->a_dvp, NOTE_WRITE)do { struct klist *__list = (&ap->a_dvp->v_selectinfo .si_note); if (__list != ((void *)0)) knote(__list, (0x0002)) ; } while (0); |
1389 | vput(ap->a_dvp); |
1390 | vp = *vpp; |
1391 | ip = VTOI(vp)((struct inode *)(vp)->v_data); |
1392 | len = strlen(ap->a_target); |
1393 | if (len < ip->i_ump->um_maxsymlinklen) { |
1394 | memcpy(SHORTLINK(ip), ap->a_target, len)__builtin_memcpy(((((ip)->i_ump->um_fstype == 1) ? (caddr_t )(ip)->dinode_u.ffs1_din->di_db : (caddr_t)(ip)->dinode_u .ffs2_din->di_db)), (ap->a_target), (len)); |
1395 | DIP_ASSIGN(ip, size, len)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_size = (len); else (ip)->dinode_u.ffs2_din ->di_size = (len); } while (0); |
1396 | ip->i_flag |= IN_CHANGE0x0002 | IN_UPDATE0x0004; |
1397 | } else |
1398 | error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0, |
1399 | UIO_SYSSPACE, IO_NODELOCKED0x08, ap->a_cnp->cn_cred, NULL((void *)0), |
1400 | curproc({struct cpu_info *__ci; asm volatile("movq %%gs:%P1,%0" : "=r" (__ci) :"n" (__builtin_offsetof(struct cpu_info, ci_self))); __ci;})->ci_curproc); |
1401 | vput(vp); |
1402 | return (error); |
1403 | } |
1404 | |
1405 | /* |
1406 | * Vnode op for reading directories. |
1407 | * |
1408 | * This routine converts the on-disk struct direct entries to the |
1409 | * struct dirent entries expected by userland and the rest of the kernel. |
1410 | */ |
1411 | int |
1412 | ufs_readdir(void *v) |
1413 | { |
1414 | struct vop_readdir_args *ap = v; |
1415 | struct uio auio, *uio = ap->a_uio; |
1416 | struct iovec aiov; |
1417 | union { |
1418 | struct dirent dn; |
1419 | char __pad[roundup(sizeof(struct dirent), 8)((((sizeof(struct dirent))+((8)-1))/(8))*(8))]; |
1420 | } u; |
1421 | off_t off = uio->uio_offset; |
1422 | struct direct *dp; |
1423 | char *edp; |
1424 | caddr_t diskbuf; |
1425 | size_t count, entries; |
1426 | int bufsize, readcnt, error; |
1427 | #if (BYTE_ORDER1234 == LITTLE_ENDIAN1234) |
1428 | int ofmt = VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data)->i_ump->um_maxsymlinklen == 0; |
1429 | #endif |
1430 | |
1431 | if (uio->uio_rw != UIO_READ) |
1432 | return (EINVAL22); |
1433 | |
1434 | count = uio->uio_resid; |
1435 | entries = (uio->uio_offset + count) & (DIRBLKSIZ(1 << 9) - 1); |
1436 | |
1437 | /* Make sure we don't return partial entries. */ |
1438 | if (count <= entries) |
1439 | return (EINVAL22); |
1440 | |
1441 | /* |
1442 | * Convert and copy back the on-disk struct direct format to |
1443 | * the user-space struct dirent format, one entry at a time |
1444 | */ |
1445 | |
1446 | /* read from disk, stopping on a block boundary, max 64kB */ |
1447 | readcnt = min(count, 64*1024) - entries; |
1448 | |
1449 | auio = *uio; |
1450 | auio.uio_iov = &aiov; |
1451 | auio.uio_iovcnt = 1; |
1452 | auio.uio_resid = readcnt; |
1453 | auio.uio_segflg = UIO_SYSSPACE; |
1454 | aiov.iov_len = readcnt; |
1455 | bufsize = readcnt; |
1456 | diskbuf = malloc(bufsize, M_TEMP127, M_WAITOK0x0001); |
1457 | aiov.iov_base = diskbuf; |
1458 | error = VOP_READ(ap->a_vp, &auio, 0, ap->a_cred); |
1459 | readcnt -= auio.uio_resid; |
1460 | dp = (struct direct *)diskbuf; |
1461 | edp = &diskbuf[readcnt]; |
1462 | |
1463 | memset(&u, 0, sizeof(u))__builtin_memset((&u), (0), (sizeof(u))); |
1464 | |
1465 | /* |
1466 | * While |
1467 | * - we haven't failed to VOP_READ or uiomove() |
1468 | * - there's space in the read buf for the head of an entry |
1469 | * - that entry has a valid d_reclen, and |
1470 | * - there's space for the *entire* entry |
1471 | * then we're good to process this one. |
1472 | */ |
1473 | while (error == 0 && |
1474 | (char *)dp + offsetof(struct direct, d_name)__builtin_offsetof(struct direct, d_name) < edp && |
1475 | dp->d_reclen > offsetof(struct direct, d_name)__builtin_offsetof(struct direct, d_name) && |
1476 | (char *)dp + dp->d_reclen <= edp) { |
1477 | u.dn.d_reclen = roundup(dp->d_namlen+1 +((((dp->d_namlen+1 + __builtin_offsetof(struct dirent, d_name ))+((8)-1))/(8))*(8)) |
1478 | offsetof(struct dirent, d_name), 8)((((dp->d_namlen+1 + __builtin_offsetof(struct dirent, d_name ))+((8)-1))/(8))*(8)); |
1479 | if (u.dn.d_reclen > uio->uio_resid) |
1480 | break; |
1481 | off += dp->d_reclen; |
1482 | u.dn.d_off = off; |
1483 | u.dn.d_fileno = dp->d_ino; |
1484 | #if (BYTE_ORDER1234 == LITTLE_ENDIAN1234) |
1485 | if (ofmt) { |
1486 | u.dn.d_type = dp->d_namlen; |
1487 | u.dn.d_namlen = dp->d_type; |
1488 | } else |
1489 | #endif |
1490 | { |
1491 | u.dn.d_type = dp->d_type; |
1492 | u.dn.d_namlen = dp->d_namlen; |
1493 | } |
1494 | memcpy(u.dn.d_name, dp->d_name, u.dn.d_namlen)__builtin_memcpy((u.dn.d_name), (dp->d_name), (u.dn.d_namlen )); |
1495 | memset(u.dn.d_name + u.dn.d_namlen, 0, u.dn.d_reclen__builtin_memset((u.dn.d_name + u.dn.d_namlen), (0), (u.dn.d_reclen - u.dn.d_namlen - __builtin_offsetof(struct dirent, d_name)) ) |
1496 | - u.dn.d_namlen - offsetof(struct dirent, d_name))__builtin_memset((u.dn.d_name + u.dn.d_namlen), (0), (u.dn.d_reclen - u.dn.d_namlen - __builtin_offsetof(struct dirent, d_name)) ); |
1497 | |
1498 | error = uiomove(&u.dn, u.dn.d_reclen, uio); |
1499 | dp = (struct direct *)((char *)dp + dp->d_reclen); |
1500 | } |
1501 | |
1502 | /* |
1503 | * If there was room for an entry in what we read but its |
1504 | * d_reclen is bogus, fail |
1505 | */ |
1506 | if ((char *)dp + offsetof(struct direct, d_name)__builtin_offsetof(struct direct, d_name) < edp && |
1507 | dp->d_reclen <= offsetof(struct direct, d_name)__builtin_offsetof(struct direct, d_name)) |
1508 | error = EIO5; |
1509 | free(diskbuf, M_TEMP127, bufsize); |
1510 | |
1511 | uio->uio_offset = off; |
1512 | *ap->a_eofflag = DIP(VTOI(ap->a_vp), size)(((((struct inode *)(ap->a_vp)->v_data))->i_ump-> um_fstype == 1) ? (((struct inode *)(ap->a_vp)->v_data) )->dinode_u.ffs1_din->di_size : (((struct inode *)(ap-> a_vp)->v_data))->dinode_u.ffs2_din->di_size) <= off; |
1513 | |
1514 | return (error); |
1515 | } |
1516 | |
1517 | /* |
1518 | * Return target name of a symbolic link |
1519 | */ |
1520 | int |
1521 | ufs_readlink(void *v) |
1522 | { |
1523 | struct vop_readlink_args *ap = v; |
1524 | struct vnode *vp = ap->a_vp; |
1525 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
1526 | u_int64_t isize; |
1527 | |
1528 | isize = DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size); |
1529 | if (isize < ip->i_ump->um_maxsymlinklen || |
1530 | (ip->i_ump->um_maxsymlinklen == 0 && DIP(ip, blocks)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_blocks : (ip)->dinode_u.ffs2_din->di_blocks) == 0)) { |
1531 | return (uiomove((char *)SHORTLINK(ip)(((ip)->i_ump->um_fstype == 1) ? (caddr_t)(ip)->dinode_u .ffs1_din->di_db : (caddr_t)(ip)->dinode_u.ffs2_din-> di_db), isize, ap->a_uio)); |
1532 | } |
1533 | return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred)); |
1534 | } |
1535 | |
1536 | /* |
1537 | * Lock an inode. If its already locked, set the WANT bit and sleep. |
1538 | */ |
1539 | int |
1540 | ufs_lock(void *v) |
1541 | { |
1542 | struct vop_lock_args *ap = v; |
1543 | struct vnode *vp = ap->a_vp; |
1544 | |
1545 | return rrw_enter(&VTOI(vp)((struct inode *)(vp)->v_data)->i_lock, ap->a_flags & LK_RWFLAGS(0x0001UL|0x0002UL|0x0040UL|0x0080UL|0x0100UL)); |
1546 | } |
1547 | |
1548 | /* |
1549 | * Unlock an inode. If WANT bit is on, wakeup. |
1550 | */ |
1551 | int |
1552 | ufs_unlock(void *v) |
1553 | { |
1554 | struct vop_unlock_args *ap = v; |
1555 | struct vnode *vp = ap->a_vp; |
1556 | |
1557 | rrw_exit(&VTOI(vp)((struct inode *)(vp)->v_data)->i_lock); |
1558 | return 0; |
1559 | } |
1560 | |
1561 | /* |
1562 | * Check for a locked inode. |
1563 | */ |
1564 | int |
1565 | ufs_islocked(void *v) |
1566 | { |
1567 | struct vop_islocked_args *ap = v; |
1568 | |
1569 | return rrw_status(&VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data)->i_lock); |
1570 | } |
1571 | |
1572 | /* |
1573 | * Calculate the logical to physical mapping if not done already, |
1574 | * then call the device strategy routine. |
1575 | */ |
1576 | int |
1577 | ufs_strategy(void *v) |
1578 | { |
1579 | struct vop_strategy_args *ap = v; |
1580 | struct buf *bp = ap->a_bp; |
1581 | struct vnode *vp = bp->b_vp; |
1582 | struct inode *ip; |
1583 | int error; |
1584 | int s; |
1585 | |
1586 | ip = VTOI(vp)((struct inode *)(vp)->v_data); |
1587 | if (vp->v_type == VBLK || vp->v_type == VCHR) |
1588 | panic("ufs_strategy: spec"); |
1589 | if (bp->b_blkno == bp->b_lblkno) { |
1590 | error = VOP_BMAP(vp, bp->b_lblkno, NULL((void *)0), &bp->b_blkno, |
1591 | NULL((void *)0)); |
1592 | if (error) { |
1593 | bp->b_error = error; |
1594 | bp->b_flags |= B_ERROR0x00000400; |
1595 | s = splbio()splraise(0x6); |
1596 | biodone(bp); |
1597 | splx(s)spllower(s); |
1598 | return (error); |
1599 | } |
1600 | if (bp->b_blkno == -1) |
1601 | clrbuf(bp){ __builtin_bzero(((bp)->b_data), ((bp)->b_bcount)); (bp )->b_resid = 0; }; |
1602 | } |
1603 | if (bp->b_blkno == -1) { |
1604 | s = splbio()splraise(0x6); |
1605 | biodone(bp); |
1606 | splx(s)spllower(s); |
1607 | return (0); |
1608 | } |
1609 | vp = ip->i_devvpi_ump->um_devvp; |
1610 | bp->b_dev = vp->v_rdevv_un.vu_specinfo->si_rdev; |
1611 | VOP_STRATEGY(vp, bp); |
1612 | return (0); |
1613 | } |
1614 | |
1615 | /* |
1616 | * Print out the contents of an inode. |
1617 | */ |
1618 | int |
1619 | ufs_print(void *v) |
1620 | { |
1621 | #ifdef DIAGNOSTIC1 |
1622 | struct vop_print_args *ap = v; |
1623 | |
1624 | struct vnode *vp = ap->a_vp; |
1625 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
1626 | |
1627 | printf("tag VT_UFS, ino %u, on dev %d, %d", ip->i_number, |
1628 | major(ip->i_dev)(((unsigned)(ip->i_dev) >> 8) & 0xff), minor(ip->i_dev)((unsigned)((ip->i_dev) & 0xff) | (((ip->i_dev) & 0xffff0000) >> 8))); |
1629 | printf(" flags 0x%x, effnlink %d, nlink %d\n", |
1630 | ip->i_flag, ip->i_effnlink, DIP(ip, nlink)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_nlink : (ip)->dinode_u.ffs2_din->di_nlink)); |
1631 | printf("\tmode 0%o, owner %d, group %d, size %lld", |
1632 | DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode), DIP(ip, uid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_uid : (ip)->dinode_u.ffs2_din->di_uid), DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid), DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size)); |
1633 | |
1634 | #ifdef FIFO1 |
1635 | if (vp->v_type == VFIFO) |
1636 | fifo_printinfo(vp); |
1637 | #endif /* FIFO */ |
1638 | printf("\n"); |
1639 | |
1640 | #endif /* DIAGNOSTIC */ |
1641 | |
1642 | return (0); |
1643 | } |
1644 | |
1645 | /* |
1646 | * Read wrapper for special devices. |
1647 | */ |
1648 | int |
1649 | ufsspec_read(void *v) |
1650 | { |
1651 | struct vop_read_args *ap = v; |
1652 | |
1653 | /* |
1654 | * Set access flag. |
1655 | */ |
1656 | VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data)->i_flag |= IN_ACCESS0x0001; |
1657 | return (spec_read(ap)); |
1658 | } |
1659 | |
1660 | /* |
1661 | * Write wrapper for special devices. |
1662 | */ |
1663 | int |
1664 | ufsspec_write(void *v) |
1665 | { |
1666 | struct vop_write_args *ap = v; |
1667 | |
1668 | /* |
1669 | * Set update and change flags. |
1670 | */ |
1671 | VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data)->i_flag |= IN_CHANGE0x0002 | IN_UPDATE0x0004; |
1672 | return (spec_write(ap)); |
1673 | } |
1674 | |
1675 | /* |
1676 | * Close wrapper for special devices. |
1677 | * |
1678 | * Update the times on the inode then do device close. |
1679 | */ |
1680 | int |
1681 | ufsspec_close(void *v) |
1682 | { |
1683 | struct vop_close_args *ap = v; |
1684 | struct vnode *vp = ap->a_vp; |
1685 | |
1686 | if (vp->v_usecount > 1) |
1687 | ufs_itimes(vp); |
1688 | return (spec_close(ap)); |
1689 | } |
1690 | |
1691 | #ifdef FIFO1 |
1692 | /* |
1693 | * Read wrapper for fifo's |
1694 | */ |
1695 | int |
1696 | ufsfifo_read(void *v) |
1697 | { |
1698 | struct vop_read_args *ap = v; |
1699 | |
1700 | /* |
1701 | * Set access flag. |
1702 | */ |
1703 | VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data)->i_flag |= IN_ACCESS0x0001; |
1704 | return (fifo_read(ap)); |
1705 | } |
1706 | |
1707 | /* |
1708 | * Write wrapper for fifo's. |
1709 | */ |
1710 | int |
1711 | ufsfifo_write(void *v) |
1712 | { |
1713 | struct vop_write_args *ap = v; |
1714 | |
1715 | /* |
1716 | * Set update and change flags. |
1717 | */ |
1718 | VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data)->i_flag |= IN_CHANGE0x0002 | IN_UPDATE0x0004; |
1719 | return (fifo_write(ap)); |
1720 | } |
1721 | |
1722 | /* |
1723 | * Close wrapper for fifo's. |
1724 | * |
1725 | * Update the times on the inode then do device close. |
1726 | */ |
1727 | int |
1728 | ufsfifo_close(void *v) |
1729 | { |
1730 | struct vop_close_args *ap = v; |
1731 | struct vnode *vp = ap->a_vp; |
1732 | |
1733 | if (vp->v_usecount > 1) |
1734 | ufs_itimes(vp); |
1735 | return (fifo_close(ap)); |
1736 | } |
1737 | #endif /* FIFO */ |
1738 | |
1739 | /* |
1740 | * Return POSIX pathconf information applicable to ufs filesystems. |
1741 | */ |
1742 | int |
1743 | ufs_pathconf(void *v) |
1744 | { |
1745 | struct vop_pathconf_args *ap = v; |
1746 | int error = 0; |
1747 | |
1748 | switch (ap->a_name) { |
1749 | case _PC_LINK_MAX1: |
1750 | *ap->a_retval = LINK_MAX32767; |
1751 | break; |
1752 | case _PC_NAME_MAX4: |
1753 | *ap->a_retval = NAME_MAX255; |
1754 | break; |
1755 | case _PC_CHOWN_RESTRICTED7: |
1756 | *ap->a_retval = 1; |
1757 | break; |
1758 | case _PC_NO_TRUNC8: |
1759 | *ap->a_retval = 1; |
1760 | break; |
1761 | case _PC_ALLOC_SIZE_MIN11: |
1762 | *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_bsize; |
1763 | break; |
1764 | case _PC_FILESIZEBITS13: |
1765 | *ap->a_retval = 64; |
1766 | break; |
1767 | case _PC_REC_INCR_XFER_SIZE15: |
1768 | *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize; |
1769 | break; |
1770 | case _PC_REC_MAX_XFER_SIZE16: |
1771 | *ap->a_retval = -1; /* means ``unlimited'' */ |
1772 | break; |
1773 | case _PC_REC_MIN_XFER_SIZE17: |
1774 | *ap->a_retval = ap->a_vp->v_mount->mnt_stat.f_iosize; |
1775 | break; |
1776 | case _PC_REC_XFER_ALIGN18: |
1777 | *ap->a_retval = PAGE_SIZE(1 << 12); |
1778 | break; |
1779 | case _PC_SYMLINK_MAX19: |
1780 | *ap->a_retval = MAXPATHLEN1024; |
1781 | break; |
1782 | case _PC_2_SYMLINKS10: |
1783 | *ap->a_retval = 1; |
1784 | break; |
1785 | case _PC_TIMESTAMP_RESOLUTION21: |
1786 | *ap->a_retval = 1; |
1787 | break; |
1788 | default: |
1789 | error = EINVAL22; |
1790 | break; |
1791 | } |
1792 | |
1793 | return (error); |
1794 | } |
1795 | |
1796 | /* |
1797 | * Advisory record locking support |
1798 | */ |
1799 | int |
1800 | ufs_advlock(void *v) |
1801 | { |
1802 | struct vop_advlock_args *ap = v; |
1803 | struct inode *ip = VTOI(ap->a_vp)((struct inode *)(ap->a_vp)->v_data); |
1804 | |
1805 | return (lf_advlock(&ip->i_lockf, DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size), ap->a_id, ap->a_op, |
1806 | ap->a_fl, ap->a_flags)); |
1807 | } |
1808 | |
1809 | /* |
1810 | * Allocate a new inode. |
1811 | */ |
1812 | int |
1813 | ufs_makeinode(int mode, struct vnode *dvp, struct vnode **vpp, |
1814 | struct componentname *cnp) |
1815 | { |
1816 | struct inode *ip, *pdir; |
1817 | struct direct newdir; |
1818 | struct vnode *tvp; |
1819 | int error; |
1820 | |
1821 | pdir = VTOI(dvp)((struct inode *)(dvp)->v_data); |
1822 | #ifdef DIAGNOSTIC1 |
1823 | if ((cnp->cn_flags & HASBUF0x000400) == 0) |
1824 | panic("ufs_makeinode: no name"); |
1825 | #endif |
1826 | *vpp = NULL((void *)0); |
1827 | if ((mode & IFMT0170000) == 0) |
1828 | mode |= IFREG0100000; |
1829 | |
1830 | if ((error = UFS_INODE_ALLOC(pdir, mode, cnp->cn_cred, &tvp)((pdir)->i_vtbl->iv_inode_alloc)((pdir), (mode), (cnp-> cn_cred), (&tvp))) != 0) { |
1831 | pool_put(&namei_pool, cnp->cn_pnbuf); |
1832 | return (error); |
1833 | } |
1834 | |
1835 | ip = VTOI(tvp)((struct inode *)(tvp)->v_data); |
1836 | |
1837 | DIP_ASSIGN(ip, gid, DIP(pdir, gid))do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_gid = ((((pdir)->i_ump->um_fstype == 1 ) ? (pdir)->dinode_u.ffs1_din->di_gid : (pdir)->dinode_u .ffs2_din->di_gid)); else (ip)->dinode_u.ffs2_din->di_gid = ((((pdir)->i_ump->um_fstype == 1) ? (pdir)->dinode_u .ffs1_din->di_gid : (pdir)->dinode_u.ffs2_din->di_gid )); } while (0); |
1838 | DIP_ASSIGN(ip, uid, cnp->cn_cred->cr_uid)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_uid = (cnp->cn_cred->cr_uid); else (ip )->dinode_u.ffs2_din->di_uid = (cnp->cn_cred->cr_uid ); } while (0); |
1839 | |
1840 | if ((error = getinoquota(ip)) || |
1841 | (error = ufs_quota_alloc_inode(ip, cnp->cn_cred)ufs_quota_alloc_inode2(ip, cnp->cn_cred, 0))) { |
1842 | pool_put(&namei_pool, cnp->cn_pnbuf); |
1843 | UFS_INODE_FREE(ip, ip->i_number, mode)((ip)->i_vtbl->iv_inode_free)((ip), (ip->i_number), ( mode)); |
1844 | vput(tvp); |
1845 | return (error); |
1846 | } |
1847 | |
1848 | ip->i_flag |= IN_ACCESS0x0001 | IN_CHANGE0x0002 | IN_UPDATE0x0004; |
1849 | DIP_ASSIGN(ip, mode, mode)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode = (mode); else (ip)->dinode_u.ffs2_din ->di_mode = (mode); } while (0); |
1850 | tvp->v_type = IFTOVT(mode)(iftovt_tab[((mode) & 0170000) >> 12]); /* Rest init'd in getnewvnode(). */ |
1851 | ip->i_effnlink = 1; |
1852 | DIP_ASSIGN(ip, nlink, 1)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink = (1); else (ip)->dinode_u.ffs2_din ->di_nlink = (1); } while (0); |
1853 | if (DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) |
1854 | softdep_change_linkcnt(ip, 0); |
1855 | if ((DIP(ip, mode)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_mode : (ip)->dinode_u.ffs2_din->di_mode) & ISGID0002000) && |
1856 | !groupmember(DIP(ip, gid)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_gid : (ip)->dinode_u.ffs2_din->di_gid), cnp->cn_cred) && |
1857 | !vnoperm(dvp) && |
1858 | suser_ucred(cnp->cn_cred)) |
1859 | DIP_AND(ip, mode, ~ISGID)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_mode &= (~0002000); else (ip)->dinode_u .ffs2_din->di_mode &= (~0002000); } while (0); |
1860 | |
1861 | /* |
1862 | * Make sure inode goes to disk before directory entry. |
1863 | */ |
1864 | if ((error = UFS_UPDATE(ip, !DOINGSOFTDEP(tvp))((ip)->i_vtbl->iv_update)((ip), (!((tvp)->v_mount-> mnt_flag & 0x04000000)))) != 0) |
1865 | goto bad; |
1866 | |
1867 | ufs_makedirentry(ip, cnp, &newdir); |
1868 | if ((error = ufs_direnter(dvp, tvp, &newdir, cnp, NULL((void *)0))) != 0) |
1869 | goto bad; |
1870 | |
1871 | if ((cnp->cn_flags & SAVESTART0x001000) == 0) |
1872 | pool_put(&namei_pool, cnp->cn_pnbuf); |
1873 | *vpp = tvp; |
1874 | return (0); |
1875 | |
1876 | bad: |
1877 | /* |
1878 | * Write error occurred trying to update the inode |
1879 | * or the directory so must deallocate the inode. |
1880 | */ |
1881 | pool_put(&namei_pool, cnp->cn_pnbuf); |
1882 | ip->i_effnlink = 0; |
1883 | DIP_ASSIGN(ip, nlink, 0)do { if ((ip)->i_ump->um_fstype == 1) (ip)->dinode_u .ffs1_din->di_nlink = (0); else (ip)->dinode_u.ffs2_din ->di_nlink = (0); } while (0); |
1884 | ip->i_flag |= IN_CHANGE0x0002; |
1885 | if (DOINGSOFTDEP(tvp)((tvp)->v_mount->mnt_flag & 0x04000000)) |
1886 | softdep_change_linkcnt(ip, 0); |
1887 | tvp->v_type = VNON; |
1888 | vput(tvp); |
1889 | |
1890 | return (error); |
1891 | } |
1892 | |
1893 | const struct filterops ufsread_filtops = { |
1894 | .f_flags = FILTEROP_ISFD0x00000001, |
1895 | .f_attach = NULL((void *)0), |
1896 | .f_detach = filt_ufsdetach, |
1897 | .f_event = filt_ufsread, |
1898 | }; |
1899 | |
1900 | const struct filterops ufswrite_filtops = { |
1901 | .f_flags = FILTEROP_ISFD0x00000001, |
1902 | .f_attach = NULL((void *)0), |
1903 | .f_detach = filt_ufsdetach, |
1904 | .f_event = filt_ufswrite, |
1905 | }; |
1906 | |
1907 | const struct filterops ufsvnode_filtops = { |
1908 | .f_flags = FILTEROP_ISFD0x00000001, |
1909 | .f_attach = NULL((void *)0), |
1910 | .f_detach = filt_ufsdetach, |
1911 | .f_event = filt_ufsvnode, |
1912 | }; |
1913 | |
1914 | int |
1915 | ufs_kqfilter(void *v) |
1916 | { |
1917 | struct vop_kqfilter_args *ap = v; |
1918 | struct vnode *vp = ap->a_vp; |
1919 | struct knote *kn = ap->a_kn; |
1920 | |
1921 | switch (kn->kn_filterkn_kevent.filter) { |
1922 | case EVFILT_READ(-1): |
1923 | kn->kn_fop = &ufsread_filtops; |
1924 | break; |
1925 | case EVFILT_WRITE(-2): |
1926 | kn->kn_fop = &ufswrite_filtops; |
1927 | break; |
1928 | case EVFILT_VNODE(-4): |
1929 | kn->kn_fop = &ufsvnode_filtops; |
1930 | break; |
1931 | default: |
1932 | return (EINVAL22); |
1933 | } |
1934 | |
1935 | kn->kn_hook = (caddr_t)vp; |
1936 | |
1937 | klist_insert_locked(&vp->v_selectinfo.si_note, kn); |
1938 | |
1939 | return (0); |
1940 | } |
1941 | |
1942 | void |
1943 | filt_ufsdetach(struct knote *kn) |
1944 | { |
1945 | struct vnode *vp = (struct vnode *)kn->kn_hook; |
1946 | |
1947 | klist_remove_locked(&vp->v_selectinfo.si_note, kn); |
1948 | } |
1949 | |
1950 | int |
1951 | filt_ufsread(struct knote *kn, long hint) |
1952 | { |
1953 | struct vnode *vp = (struct vnode *)kn->kn_hook; |
1954 | struct inode *ip = VTOI(vp)((struct inode *)(vp)->v_data); |
1955 | |
1956 | /* |
1957 | * filesystem is gone, so set the EOF flag and schedule |
1958 | * the knote for deletion. |
1959 | */ |
1960 | if (hint == NOTE_REVOKE0x0040) { |
1961 | kn->kn_flagskn_kevent.flags |= (EV_EOF0x8000 | EV_ONESHOT0x0010); |
1962 | return (1); |
1963 | } |
1964 | |
1965 | #ifdef EXT2FS1 |
1966 | if (IS_EXT2_VNODE(ip->i_vnode)(ip->i_vnode->v_tag == VT_EXT2FS)) |
1967 | kn->kn_datakn_kevent.data = ext2fs_size(ip) - foffset(kn->kn_fpkn_ptr.p_fp); |
1968 | else |
1969 | #endif |
1970 | kn->kn_datakn_kevent.data = DIP(ip, size)(((ip)->i_ump->um_fstype == 1) ? (ip)->dinode_u.ffs1_din ->di_size : (ip)->dinode_u.ffs2_din->di_size) - foffset(kn->kn_fpkn_ptr.p_fp); |
1971 | if (kn->kn_datakn_kevent.data == 0 && kn->kn_sfflags & NOTE_EOF0x0002) { |
1972 | kn->kn_fflagskn_kevent.fflags |= NOTE_EOF0x0002; |
1973 | return (1); |
1974 | } |
1975 | |
1976 | if (kn->kn_flagskn_kevent.flags & (__EV_POLL0x1000 | __EV_SELECT0x0800)) |
1977 | return (1); |
1978 | |
1979 | return (kn->kn_datakn_kevent.data != 0); |
1980 | } |
1981 | |
1982 | int |
1983 | filt_ufswrite(struct knote *kn, long hint) |
1984 | { |
1985 | /* |
1986 | * filesystem is gone, so set the EOF flag and schedule |
1987 | * the knote for deletion. |
1988 | */ |
1989 | if (hint == NOTE_REVOKE0x0040) { |
1990 | kn->kn_flagskn_kevent.flags |= (EV_EOF0x8000 | EV_ONESHOT0x0010); |
1991 | return (1); |
1992 | } |
1993 | |
1994 | kn->kn_datakn_kevent.data = 0; |
1995 | return (1); |
1996 | } |
1997 | |
1998 | int |
1999 | filt_ufsvnode(struct knote *kn, long hint) |
2000 | { |
2001 | if (kn->kn_sfflags & hint) |
2002 | kn->kn_fflagskn_kevent.fflags |= hint; |
2003 | if (hint == NOTE_REVOKE0x0040) { |
2004 | kn->kn_flagskn_kevent.flags |= EV_EOF0x8000; |
2005 | return (1); |
2006 | } |
2007 | return (kn->kn_fflagskn_kevent.fflags != 0); |
2008 | } |