Commit | Line | Data |
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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; | |
2f03f956 | 35 | extern int make_backups; |
ee1df1cc | 36 | extern char *backup_dir; |
a3221d2a | 37 | extern int inplace; |
fe055c71 AT |
38 | |
39 | ||
c627d613 AT |
40 | /* |
41 | free a sums struct | |
42 | */ | |
2f03f956 | 43 | void free_sums(struct sum_struct *s) |
c627d613 | 44 | { |
298c10d5 AT |
45 | if (s->sums) free(s->sums); |
46 | free(s); | |
c627d613 AT |
47 | } |
48 | ||
49 | ||
3cb6f5d6 | 50 | /* |
7a2fd68b WD |
51 | * delete a file or directory. If force_delete is set then delete |
52 | * recursively | |
3cb6f5d6 | 53 | */ |
2f03f956 | 54 | int delete_file(char *fname) |
3cb6f5d6 AT |
55 | { |
56 | DIR *d; | |
57 | struct dirent *di; | |
58 | char buf[MAXPATHLEN]; | |
bcacc18b | 59 | STRUCT_STAT st; |
3cb6f5d6 AT |
60 | int ret; |
61 | ||
3cb6f5d6 | 62 | #if SUPPORT_LINKS |
bcacc18b | 63 | ret = do_lstat(fname, &st); |
3cb6f5d6 | 64 | #else |
bcacc18b | 65 | ret = do_stat(fname, &st); |
3cb6f5d6 | 66 | #endif |
a7ed6ca6 | 67 | if (ret) |
3cb6f5d6 | 68 | return -1; |
3cb6f5d6 AT |
69 | |
70 | if (!S_ISDIR(st.st_mode)) { | |
a7ed6ca6 WD |
71 | if (robust_unlink(fname) == 0 || errno == ENOENT) |
72 | return 0; | |
d62bcc17 WD |
73 | rsyserr(FERROR, errno, "delete_file: unlink %s failed", |
74 | full_fname(fname)); | |
3cb6f5d6 AT |
75 | return -1; |
76 | } | |
77 | ||
a7ed6ca6 WD |
78 | if (do_rmdir(fname) == 0 || errno == ENOENT) |
79 | return 0; | |
80 | if (!force_delete || !recurse | |
81 | || (errno != ENOTEMPTY && errno != EEXIST)) { | |
d62bcc17 WD |
82 | rsyserr(FERROR, errno, "delete_file: rmdir %s failed", |
83 | full_fname(fname)); | |
3cb6f5d6 AT |
84 | return -1; |
85 | } | |
86 | ||
87 | /* now we do a recsursive delete on the directory ... */ | |
a7ed6ca6 | 88 | if (!(d = opendir(fname))) { |
d62bcc17 WD |
89 | rsyserr(FERROR, errno, "delete_file: opendir %s failed", |
90 | full_fname(fname)); | |
3cb6f5d6 AT |
91 | return -1; |
92 | } | |
93 | ||
6a7cc46c | 94 | for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) { |
d6e6ecbd | 95 | char *dname = d_name(di); |
a7ed6ca6 WD |
96 | if (dname[0] == '.' && (dname[1] == '\0' |
97 | || (dname[1] == '.' && dname[2] == '\0'))) | |
3cb6f5d6 | 98 | continue; |
a7725e6d | 99 | pathjoin(buf, sizeof buf, fname, dname); |
3cb6f5d6 | 100 | if (verbose > 0) |
a7ed6ca6 | 101 | rprintf(FINFO, "deleting %s\n", buf); |
3cb6f5d6 AT |
102 | if (delete_file(buf) != 0) { |
103 | closedir(d); | |
104 | return -1; | |
105 | } | |
7a2fd68b | 106 | } |
6a7cc46c | 107 | if (errno) { |
d62bcc17 WD |
108 | rsyserr(FERROR, errno, "delete_file: readdir %s failed", |
109 | full_fname(fname)); | |
6a7cc46c S |
110 | closedir(d); |
111 | return -1; | |
112 | } | |
3cb6f5d6 AT |
113 | |
114 | closedir(d); | |
7a2fd68b | 115 | |
3cb6f5d6 | 116 | if (do_rmdir(fname) != 0) { |
d62bcc17 WD |
117 | rsyserr(FERROR, errno, "delete_file: rmdir %s failed", |
118 | full_fname(fname)); | |
3cb6f5d6 AT |
119 | return -1; |
120 | } | |
121 | ||
122 | return 0; | |
123 | } | |
c627d613 | 124 | |
2f03f956 | 125 | int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, |
4ecc9e6b | 126 | int flags) |
c627d613 | 127 | { |
667e72a1 AT |
128 | int updated = 0; |
129 | STRUCT_STAT st2; | |
460f6b99 | 130 | int change_uid, change_gid; |
c627d613 | 131 | |
ee1df1cc WD |
132 | if (dry_run) |
133 | return 0; | |
c627d613 | 134 | |
667e72a1 | 135 | if (!st) { |
373ef160 | 136 | if (link_stat(fname, &st2, 0) < 0) { |
d62bcc17 WD |
137 | rsyserr(FERROR, errno, "stat %s failed", |
138 | full_fname(fname)); | |
667e72a1 AT |
139 | return 0; |
140 | } | |
141 | st = &st2; | |
142 | } | |
c627d613 | 143 | |
ee1df1cc WD |
144 | if (!preserve_times || S_ISLNK(st->st_mode) |
145 | || (make_backups && !backup_dir && S_ISDIR(st->st_mode))) | |
38443188 WD |
146 | flags |= PERMS_SKIP_MTIME; |
147 | if (!(flags & PERMS_SKIP_MTIME) | |
4ecc9e6b | 148 | && cmp_modtime(st->st_mtime, file->modtime) != 0) { |
8d249b63 | 149 | /* don't complain about not setting times on directories |
a174e1ed | 150 | * because some filesystems can't do it */ |
8d249b63 AT |
151 | if (set_modtime(fname,file->modtime) != 0 && |
152 | !S_ISDIR(st->st_mode)) { | |
d62bcc17 WD |
153 | rsyserr(FERROR, errno, "failed to set times on %s", |
154 | full_fname(fname)); | |
667e72a1 AT |
155 | return 0; |
156 | } | |
a174e1ed | 157 | updated = 1; |
667e72a1 AT |
158 | } |
159 | ||
460f6b99 | 160 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
a60e2dca | 161 | change_gid = preserve_gid && file->gid != GID_NONE |
7352b873 | 162 | && st->st_gid != file->gid; |
460f6b99 | 163 | if (change_uid || change_gid) { |
62c9e6b3 | 164 | if (verbose > 2) { |
ce37eb2d WD |
165 | if (change_uid) { |
166 | rprintf(FINFO, | |
167 | "set uid of %s from %ld to %ld\n", | |
168 | fname, (long)st->st_uid, (long)file->uid); | |
169 | } | |
170 | if (change_gid) { | |
171 | rprintf(FINFO, | |
172 | "set gid of %s from %ld to %ld\n", | |
173 | fname, (long)st->st_gid, (long)file->gid); | |
174 | } | |
175 | } | |
667e72a1 | 176 | if (do_lchown(fname, |
a174e1ed WD |
177 | change_uid ? file->uid : st->st_uid, |
178 | change_gid ? file->gid : st->st_gid) != 0) { | |
460f6b99 | 179 | /* shouldn't have attempted to change uid or gid |
a174e1ed | 180 | * unless have the privilege */ |
d62bcc17 | 181 | rsyserr(FERROR, errno, "%s %s failed", |
a174e1ed | 182 | change_uid ? "chown" : "chgrp", |
d62bcc17 | 183 | full_fname(fname)); |
460f6b99 | 184 | return 0; |
667e72a1 | 185 | } |
a5827a28 | 186 | /* a lchown had been done - we have to re-stat if the |
a174e1ed WD |
187 | * destination had the setuid or setgid bits set due |
188 | * to the side effect of the chown call */ | |
a5827a28 | 189 | if (st->st_mode & (S_ISUID | S_ISGID)) { |
373ef160 | 190 | link_stat(fname, st, 0); |
a5827a28 | 191 | } |
460f6b99 | 192 | updated = 1; |
667e72a1 | 193 | } |
c627d613 AT |
194 | |
195 | #ifdef HAVE_CHMOD | |
972a3619 | 196 | if (!S_ISLNK(st->st_mode)) { |
b0d791bb | 197 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
972a3619 | 198 | updated = 1; |
b0d791bb | 199 | if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) { |
d62bcc17 WD |
200 | rsyserr(FERROR, errno, "failed to set permissions on %s", |
201 | full_fname(fname)); | |
972a3619 DD |
202 | return 0; |
203 | } | |
667e72a1 AT |
204 | } |
205 | } | |
c627d613 | 206 | #endif |
6a7cc46c | 207 | |
4ecc9e6b | 208 | if (verbose > 1 && flags & PERMS_REPORT) { |
667e72a1 AT |
209 | if (updated) |
210 | rprintf(FINFO,"%s\n",fname); | |
211 | else | |
212 | rprintf(FINFO,"%s is uptodate\n",fname); | |
213 | } | |
214 | return updated; | |
c627d613 AT |
215 | } |
216 | ||
217 | ||
34ccb63e AT |
218 | void sig_int(void) |
219 | { | |
d5a0b483 WD |
220 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
221 | * for a password, then our cleanup's sending of a SIGUSR1 | |
222 | * signal to all our children may kill ssh before it has a | |
223 | * chance to restore the tty settings (i.e. turn echo back | |
224 | * on). By sleeping for a short time, ssh gets a bigger | |
225 | * chance to do the right thing. If child processes are | |
226 | * not ssh waiting for a password, then this tiny delay | |
227 | * shouldn't hurt anything. */ | |
228 | msleep(400); | |
65417579 | 229 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
230 | } |
231 | ||
232 | ||
c95da96a AT |
233 | /* finish off a file transfer, renaming the file and setting the permissions |
234 | and ownership */ | |
4ecc9e6b WD |
235 | void finish_transfer(char *fname, char *fnametmp, struct file_struct *file, |
236 | int ok_to_set_time) | |
c95da96a | 237 | { |
62c9e6b3 WD |
238 | int ret; |
239 | ||
53dd3135 DD |
240 | if (make_backups && !make_backup(fname)) |
241 | return; | |
c95da96a | 242 | |
a3221d2a WD |
243 | if (inplace) { |
244 | if (verbose > 2) | |
245 | rprintf(FINFO, "finishing %s\n", fname); | |
246 | set_perms(fname, file, NULL, 0); | |
247 | return; | |
248 | } | |
249 | ||
c95da96a | 250 | /* move tmp file over real file */ |
da38e779 WD |
251 | if (verbose > 2) |
252 | rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname); | |
62c9e6b3 | 253 | ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS); |
3d061653 | 254 | if (ret < 0) { |
d62bcc17 | 255 | rsyserr(FERROR, errno, "%s %s -> \"%s\"", |
62c9e6b3 | 256 | ret == -2 ? "copy" : "rename", |
d62bcc17 | 257 | full_fname(fnametmp), fname); |
c7c11a0d | 258 | do_unlink(fnametmp); |
c95da96a | 259 | } else { |
4ecc9e6b | 260 | set_perms(fname, file, NULL, |
38443188 | 261 | ok_to_set_time ? 0 : PERMS_SKIP_MTIME); |
c95da96a AT |
262 | } |
263 | } | |
c3e5e585 WD |
264 | |
265 | const char *who_am_i(void) | |
266 | { | |
267 | return am_sender ? "sender" : am_generator ? "generator" : "receiver"; | |
268 | } |