Commit | Line | Data |
---|---|---|
7a2fd68b | 1 | /* |
c627d613 AT |
2 | Copyright (C) Andrew Tridgell 1996 |
3 | Copyright (C) Paul Mackerras 1996 | |
7a2fd68b | 4 | |
c627d613 AT |
5 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
7a2fd68b | 9 | |
c627d613 AT |
10 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
7a2fd68b | 14 | |
c627d613 AT |
15 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
2f03f956 AT |
20 | /* this file contains code used by more than one part of the rsync |
21 | process */ | |
c627d613 | 22 | |
2f03f956 | 23 | #include "rsync.h" |
43a481dc | 24 | |
c627d613 | 25 | extern int verbose; |
c627d613 | 26 | extern int dry_run; |
2f03f956 | 27 | extern int preserve_times; |
7b8356d0 | 28 | extern int am_root; |
c3e5e585 WD |
29 | extern int am_sender; |
30 | extern int am_generator; | |
2f03f956 AT |
31 | extern int preserve_uid; |
32 | extern int preserve_gid; | |
ee1df1cc WD |
33 | extern int force_delete; |
34 | extern int recurse; | |
81b07870 | 35 | extern int keep_dirlinks; |
2f03f956 | 36 | extern int make_backups; |
ee1df1cc | 37 | extern char *backup_dir; |
a3221d2a | 38 | extern int inplace; |
fe055c71 AT |
39 | |
40 | ||
c627d613 AT |
41 | /* |
42 | free a sums struct | |
43 | */ | |
2f03f956 | 44 | void free_sums(struct sum_struct *s) |
c627d613 | 45 | { |
298c10d5 AT |
46 | if (s->sums) free(s->sums); |
47 | free(s); | |
c627d613 AT |
48 | } |
49 | ||
50 | ||
3cb6f5d6 | 51 | /* |
7a2fd68b WD |
52 | * delete a file or directory. If force_delete is set then delete |
53 | * recursively | |
3cb6f5d6 | 54 | */ |
dd096ae0 | 55 | int delete_file(char *fname, int flags) |
3cb6f5d6 AT |
56 | { |
57 | DIR *d; | |
58 | struct dirent *di; | |
59 | char buf[MAXPATHLEN]; | |
bcacc18b | 60 | STRUCT_STAT st; |
3cb6f5d6 | 61 | |
dd096ae0 WD |
62 | if (!(flags & DEL_DIR)) { |
63 | if (robust_unlink(fname) == 0) { | |
64 | if (verbose && !(flags & DEL_TERSE)) { | |
65 | rprintf(FINFO, "deleting %s\n", | |
66 | safe_fname(fname)); | |
67 | } | |
68 | return 0; | |
69 | } | |
70 | if (errno == ENOENT) | |
a7ed6ca6 | 71 | return 0; |
d62bcc17 WD |
72 | rsyserr(FERROR, errno, "delete_file: unlink %s failed", |
73 | full_fname(fname)); | |
3cb6f5d6 AT |
74 | return -1; |
75 | } | |
76 | ||
dd096ae0 WD |
77 | if (do_rmdir(fname) == 0) { |
78 | if (verbose && !(flags & DEL_TERSE)) { | |
79 | rprintf(FINFO, "deleting %s/\n", | |
80 | safe_fname(fname)); | |
81 | } | |
a7ed6ca6 | 82 | return 0; |
dd096ae0 WD |
83 | } |
84 | if (errno == ENOENT) | |
85 | return 0; | |
86 | if ((flags & DEL_NO_RECURSE) || !force_delete || !recurse | |
a7ed6ca6 | 87 | || (errno != ENOTEMPTY && errno != EEXIST)) { |
d62bcc17 WD |
88 | rsyserr(FERROR, errno, "delete_file: rmdir %s failed", |
89 | full_fname(fname)); | |
3cb6f5d6 AT |
90 | return -1; |
91 | } | |
92 | ||
93 | /* now we do a recsursive delete on the directory ... */ | |
a7ed6ca6 | 94 | if (!(d = opendir(fname))) { |
d62bcc17 WD |
95 | rsyserr(FERROR, errno, "delete_file: opendir %s failed", |
96 | full_fname(fname)); | |
3cb6f5d6 AT |
97 | return -1; |
98 | } | |
99 | ||
dd096ae0 WD |
100 | if (!(flags & DEL_TERSE)) { |
101 | if (verbose) | |
102 | rprintf(FINFO, "deleting %s/\n", safe_fname(fname)); | |
103 | flags |= DEL_TERSE; | |
104 | } | |
105 | ||
6a7cc46c | 106 | for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) { |
d6e6ecbd | 107 | char *dname = d_name(di); |
a7ed6ca6 WD |
108 | if (dname[0] == '.' && (dname[1] == '\0' |
109 | || (dname[1] == '.' && dname[2] == '\0'))) | |
3cb6f5d6 | 110 | continue; |
a7725e6d | 111 | pathjoin(buf, sizeof buf, fname, dname); |
dd096ae0 WD |
112 | |
113 | if (do_lstat(buf, &st) < 0) | |
114 | continue; | |
115 | if (S_ISDIR(st.st_mode)) | |
116 | flags |= DEL_DIR; | |
117 | else | |
118 | flags &= ~DEL_DIR; | |
119 | ||
120 | if (verbose) | |
121 | rprintf(FINFO, "deleting %s%s\n", safe_fname(buf), | |
122 | flags & DEL_DIR ? "/" : ""); | |
123 | if (delete_file(buf, flags) != 0) { | |
3cb6f5d6 AT |
124 | closedir(d); |
125 | return -1; | |
126 | } | |
7a2fd68b | 127 | } |
6a7cc46c | 128 | if (errno) { |
d62bcc17 WD |
129 | rsyserr(FERROR, errno, "delete_file: readdir %s failed", |
130 | full_fname(fname)); | |
6a7cc46c S |
131 | closedir(d); |
132 | return -1; | |
133 | } | |
3cb6f5d6 AT |
134 | |
135 | closedir(d); | |
7a2fd68b | 136 | |
dd096ae0 | 137 | if (do_rmdir(fname) != 0 && errno != ENOENT) { |
d62bcc17 WD |
138 | rsyserr(FERROR, errno, "delete_file: rmdir %s failed", |
139 | full_fname(fname)); | |
3cb6f5d6 AT |
140 | return -1; |
141 | } | |
142 | ||
143 | return 0; | |
144 | } | |
c627d613 | 145 | |
2f03f956 | 146 | int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, |
4ecc9e6b | 147 | int flags) |
c627d613 | 148 | { |
667e72a1 AT |
149 | int updated = 0; |
150 | STRUCT_STAT st2; | |
460f6b99 | 151 | int change_uid, change_gid; |
c627d613 | 152 | |
ee1df1cc WD |
153 | if (dry_run) |
154 | return 0; | |
c627d613 | 155 | |
667e72a1 | 156 | if (!st) { |
373ef160 | 157 | if (link_stat(fname, &st2, 0) < 0) { |
d62bcc17 WD |
158 | rsyserr(FERROR, errno, "stat %s failed", |
159 | full_fname(fname)); | |
667e72a1 AT |
160 | return 0; |
161 | } | |
162 | st = &st2; | |
163 | } | |
c627d613 | 164 | |
ee1df1cc WD |
165 | if (!preserve_times || S_ISLNK(st->st_mode) |
166 | || (make_backups && !backup_dir && S_ISDIR(st->st_mode))) | |
38443188 WD |
167 | flags |= PERMS_SKIP_MTIME; |
168 | if (!(flags & PERMS_SKIP_MTIME) | |
4ecc9e6b | 169 | && cmp_modtime(st->st_mtime, file->modtime) != 0) { |
8d249b63 | 170 | /* don't complain about not setting times on directories |
a174e1ed | 171 | * because some filesystems can't do it */ |
8d249b63 AT |
172 | if (set_modtime(fname,file->modtime) != 0 && |
173 | !S_ISDIR(st->st_mode)) { | |
d62bcc17 WD |
174 | rsyserr(FERROR, errno, "failed to set times on %s", |
175 | full_fname(fname)); | |
667e72a1 AT |
176 | return 0; |
177 | } | |
a174e1ed | 178 | updated = 1; |
667e72a1 AT |
179 | } |
180 | ||
460f6b99 | 181 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
a60e2dca | 182 | change_gid = preserve_gid && file->gid != GID_NONE |
7352b873 | 183 | && st->st_gid != file->gid; |
70a2c84c | 184 | #if !HAVE_LCHOWN && !CHOWN_MODIFIES_SYMLINK |
a41a1e87 WD |
185 | if (S_ISLNK(st->st_mode)) |
186 | ; | |
187 | else | |
188 | #endif | |
460f6b99 | 189 | if (change_uid || change_gid) { |
62c9e6b3 | 190 | if (verbose > 2) { |
ce37eb2d WD |
191 | if (change_uid) { |
192 | rprintf(FINFO, | |
193 | "set uid of %s from %ld to %ld\n", | |
194 | fname, (long)st->st_uid, (long)file->uid); | |
195 | } | |
196 | if (change_gid) { | |
197 | rprintf(FINFO, | |
198 | "set gid of %s from %ld to %ld\n", | |
199 | fname, (long)st->st_gid, (long)file->gid); | |
200 | } | |
201 | } | |
667e72a1 | 202 | if (do_lchown(fname, |
a174e1ed WD |
203 | change_uid ? file->uid : st->st_uid, |
204 | change_gid ? file->gid : st->st_gid) != 0) { | |
460f6b99 | 205 | /* shouldn't have attempted to change uid or gid |
a174e1ed | 206 | * unless have the privilege */ |
d62bcc17 | 207 | rsyserr(FERROR, errno, "%s %s failed", |
a174e1ed | 208 | change_uid ? "chown" : "chgrp", |
d62bcc17 | 209 | full_fname(fname)); |
460f6b99 | 210 | return 0; |
667e72a1 | 211 | } |
a5827a28 | 212 | /* a lchown had been done - we have to re-stat if the |
dd096ae0 WD |
213 | * destination had the setuid or setgid bits set due |
214 | * to the side effect of the chown call */ | |
a5827a28 | 215 | if (st->st_mode & (S_ISUID | S_ISGID)) { |
81b07870 WD |
216 | link_stat(fname, st, |
217 | keep_dirlinks && S_ISDIR(st->st_mode)); | |
a5827a28 | 218 | } |
460f6b99 | 219 | updated = 1; |
667e72a1 | 220 | } |
c627d613 AT |
221 | |
222 | #ifdef HAVE_CHMOD | |
972a3619 | 223 | if (!S_ISLNK(st->st_mode)) { |
b0d791bb | 224 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
972a3619 | 225 | updated = 1; |
b0d791bb | 226 | if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) { |
d62bcc17 WD |
227 | rsyserr(FERROR, errno, "failed to set permissions on %s", |
228 | full_fname(fname)); | |
972a3619 DD |
229 | return 0; |
230 | } | |
667e72a1 AT |
231 | } |
232 | } | |
c627d613 | 233 | #endif |
6a7cc46c | 234 | |
4ecc9e6b | 235 | if (verbose > 1 && flags & PERMS_REPORT) { |
667e72a1 AT |
236 | if (updated) |
237 | rprintf(FINFO,"%s\n",fname); | |
238 | else | |
239 | rprintf(FINFO,"%s is uptodate\n",fname); | |
240 | } | |
241 | return updated; | |
c627d613 AT |
242 | } |
243 | ||
244 | ||
34ccb63e AT |
245 | void sig_int(void) |
246 | { | |
d5a0b483 WD |
247 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
248 | * for a password, then our cleanup's sending of a SIGUSR1 | |
249 | * signal to all our children may kill ssh before it has a | |
250 | * chance to restore the tty settings (i.e. turn echo back | |
251 | * on). By sleeping for a short time, ssh gets a bigger | |
252 | * chance to do the right thing. If child processes are | |
253 | * not ssh waiting for a password, then this tiny delay | |
254 | * shouldn't hurt anything. */ | |
255 | msleep(400); | |
65417579 | 256 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
257 | } |
258 | ||
259 | ||
c95da96a AT |
260 | /* finish off a file transfer, renaming the file and setting the permissions |
261 | and ownership */ | |
4ecc9e6b | 262 | void finish_transfer(char *fname, char *fnametmp, struct file_struct *file, |
997d9ea6 | 263 | int ok_to_set_time, int overwriting_basis) |
c95da96a | 264 | { |
62c9e6b3 WD |
265 | int ret; |
266 | ||
a3221d2a WD |
267 | if (inplace) { |
268 | if (verbose > 2) | |
269 | rprintf(FINFO, "finishing %s\n", fname); | |
077e59b7 | 270 | goto do_set_perms; |
a3221d2a WD |
271 | } |
272 | ||
997d9ea6 | 273 | if (make_backups && overwriting_basis && !make_backup(fname)) |
e484f0cc WD |
274 | return; |
275 | ||
ebeacb36 WD |
276 | /* Change permissions before putting the file into place. */ |
277 | set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
278 | ||
c95da96a | 279 | /* move tmp file over real file */ |
da38e779 WD |
280 | if (verbose > 2) |
281 | rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname); | |
62c9e6b3 | 282 | ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS); |
3d061653 | 283 | if (ret < 0) { |
d62bcc17 | 284 | rsyserr(FERROR, errno, "%s %s -> \"%s\"", |
62c9e6b3 | 285 | ret == -2 ? "copy" : "rename", |
d62bcc17 | 286 | full_fname(fnametmp), fname); |
c7c11a0d | 287 | do_unlink(fnametmp); |
077e59b7 | 288 | return; |
c95da96a | 289 | } |
ebeacb36 WD |
290 | if (ret == 0) { |
291 | /* The file was moved into place (not copied), so it's done. */ | |
292 | return; | |
293 | } | |
077e59b7 WD |
294 | do_set_perms: |
295 | set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); | |
c95da96a | 296 | } |
c3e5e585 WD |
297 | |
298 | const char *who_am_i(void) | |
299 | { | |
ebeacb36 | 300 | return am_sender ? "sender" : am_generator ? "generator" : "receiver"; |
c3e5e585 | 301 | } |