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_server; |
30 | extern int am_sender; | |
31 | extern int am_generator; | |
2f03f956 AT |
32 | extern int preserve_uid; |
33 | extern int preserve_gid; | |
34 | extern int preserve_perms; | |
35 | extern int make_backups; | |
fe055c71 AT |
36 | |
37 | ||
c627d613 AT |
38 | /* |
39 | free a sums struct | |
40 | */ | |
2f03f956 | 41 | void free_sums(struct sum_struct *s) |
c627d613 | 42 | { |
298c10d5 AT |
43 | if (s->sums) free(s->sums); |
44 | free(s); | |
c627d613 AT |
45 | } |
46 | ||
47 | ||
3cb6f5d6 | 48 | /* |
7a2fd68b WD |
49 | * delete a file or directory. If force_delete is set then delete |
50 | * recursively | |
3cb6f5d6 | 51 | */ |
2f03f956 | 52 | int delete_file(char *fname) |
3cb6f5d6 AT |
53 | { |
54 | DIR *d; | |
55 | struct dirent *di; | |
56 | char buf[MAXPATHLEN]; | |
57 | extern int force_delete; | |
bcacc18b | 58 | STRUCT_STAT st; |
3cb6f5d6 | 59 | int ret; |
05848a2c | 60 | extern int recurse; |
3cb6f5d6 | 61 | |
3cb6f5d6 | 62 | #if SUPPORT_LINKS |
bcacc18b | 63 | ret = do_lstat(fname, &st); |
3cb6f5d6 | 64 | #else |
bcacc18b | 65 | ret = do_stat(fname, &st); |
3cb6f5d6 AT |
66 | #endif |
67 | if (ret) { | |
3cb6f5d6 AT |
68 | return -1; |
69 | } | |
70 | ||
71 | if (!S_ISDIR(st.st_mode)) { | |
1d2c275f | 72 | if (robust_unlink(fname) == 0 || errno == ENOENT) return 0; |
ea42541f WD |
73 | rprintf(FERROR, "delete_file: unlink %s failed: %s\n", |
74 | full_fname(fname), strerror(errno)); | |
3cb6f5d6 AT |
75 | return -1; |
76 | } | |
77 | ||
78 | if (do_rmdir(fname) == 0 || errno == ENOENT) return 0; | |
7a2fd68b | 79 | if (!force_delete || !recurse || |
05848a2c | 80 | (errno != ENOTEMPTY && errno != EEXIST)) { |
ea42541f WD |
81 | rprintf(FERROR, "delete_file: rmdir %s failed: %s\n", |
82 | full_fname(fname), strerror(errno)); | |
3cb6f5d6 AT |
83 | return -1; |
84 | } | |
85 | ||
86 | /* now we do a recsursive delete on the directory ... */ | |
87 | d = opendir(fname); | |
88 | if (!d) { | |
ea42541f WD |
89 | rprintf(FERROR, "delete_file: opendir %s failed: %s\n", |
90 | full_fname(fname), strerror(errno)); | |
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); |
6a7cc46c S |
96 | if (strcmp(dname,".") == 0 |
97 | || strcmp(dname,"..") == 0) | |
3cb6f5d6 | 98 | continue; |
a7725e6d | 99 | pathjoin(buf, sizeof buf, fname, dname); |
3cb6f5d6 | 100 | if (verbose > 0) |
9486289c | 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) { |
7a2fd68b WD |
108 | rprintf(FERROR, "delete_file: readdir %s failed: %s\n", |
109 | full_fname(fname), strerror(errno)); | |
6a7cc46c S |
110 | closedir(d); |
111 | return -1; | |
112 | } | |
3cb6f5d6 AT |
113 | |
114 | closedir(d); | |
7a2fd68b | 115 | |
3cb6f5d6 | 116 | if (do_rmdir(fname) != 0) { |
ea42541f WD |
117 | rprintf(FERROR, "delete_file: rmdir %s failed: %s\n", |
118 | full_fname(fname), strerror(errno)); | |
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, |
6a7cc46c | 126 | int report) |
c627d613 | 127 | { |
667e72a1 AT |
128 | int updated = 0; |
129 | STRUCT_STAT st2; | |
460f6b99 | 130 | int change_uid, change_gid; |
c627d613 | 131 | |
667e72a1 | 132 | if (dry_run) return 0; |
c627d613 | 133 | |
667e72a1 AT |
134 | if (!st) { |
135 | if (link_stat(fname,&st2) != 0) { | |
ea42541f WD |
136 | rprintf(FERROR, "stat %s failed: %s\n", |
137 | full_fname(fname), strerror(errno)); | |
667e72a1 AT |
138 | return 0; |
139 | } | |
140 | st = &st2; | |
141 | } | |
c627d613 | 142 | |
667e72a1 | 143 | if (preserve_times && !S_ISLNK(st->st_mode) && |
5b56cc19 | 144 | cmp_modtime(st->st_mtime, file->modtime) != 0) { |
8d249b63 AT |
145 | /* don't complain about not setting times on directories |
146 | because some filesystems can't do it */ | |
147 | if (set_modtime(fname,file->modtime) != 0 && | |
148 | !S_ISDIR(st->st_mode)) { | |
ea42541f WD |
149 | rprintf(FERROR, "failed to set times on %s: %s\n", |
150 | full_fname(fname), strerror(errno)); | |
667e72a1 | 151 | return 0; |
8d249b63 AT |
152 | } else { |
153 | updated = 1; | |
667e72a1 AT |
154 | } |
155 | } | |
156 | ||
460f6b99 | 157 | change_uid = am_root && preserve_uid && st->st_uid != file->uid; |
a60e2dca | 158 | change_gid = preserve_gid && file->gid != GID_NONE |
7352b873 | 159 | && st->st_gid != file->gid; |
460f6b99 | 160 | if (change_uid || change_gid) { |
ce37eb2d WD |
161 | if (verbose > 2 && !dry_run) { |
162 | if (change_uid) { | |
163 | rprintf(FINFO, | |
164 | "set uid of %s from %ld to %ld\n", | |
165 | fname, (long)st->st_uid, (long)file->uid); | |
166 | } | |
167 | if (change_gid) { | |
168 | rprintf(FINFO, | |
169 | "set gid of %s from %ld to %ld\n", | |
170 | fname, (long)st->st_gid, (long)file->gid); | |
171 | } | |
172 | } | |
667e72a1 | 173 | if (do_lchown(fname, |
460f6b99 DD |
174 | change_uid?file->uid:st->st_uid, |
175 | change_gid?file->gid:st->st_gid) != 0) { | |
176 | /* shouldn't have attempted to change uid or gid | |
177 | unless have the privilege */ | |
baa4212a WD |
178 | rprintf(FERROR, "%s %s failed: %s\n", |
179 | change_uid ? "chown" : "chgrp", | |
ea42541f | 180 | full_fname(fname), strerror(errno)); |
460f6b99 | 181 | return 0; |
667e72a1 | 182 | } |
a5827a28 AT |
183 | /* a lchown had been done - we have to re-stat if the |
184 | destination had the setuid or setgid bits set due | |
185 | to the side effect of the chown call */ | |
186 | if (st->st_mode & (S_ISUID | S_ISGID)) { | |
187 | link_stat(fname, st); | |
188 | } | |
460f6b99 | 189 | updated = 1; |
667e72a1 | 190 | } |
c627d613 AT |
191 | |
192 | #ifdef HAVE_CHMOD | |
972a3619 | 193 | if (!S_ISLNK(st->st_mode)) { |
b0d791bb | 194 | if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { |
972a3619 | 195 | updated = 1; |
b0d791bb | 196 | if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) { |
ea42541f WD |
197 | rprintf(FERROR, "failed to set permissions on %s: %s\n", |
198 | full_fname(fname), strerror(errno)); | |
972a3619 DD |
199 | return 0; |
200 | } | |
667e72a1 AT |
201 | } |
202 | } | |
c627d613 | 203 | #endif |
6a7cc46c | 204 | |
667e72a1 AT |
205 | if (verbose > 1 && report) { |
206 | if (updated) | |
207 | rprintf(FINFO,"%s\n",fname); | |
208 | else | |
209 | rprintf(FINFO,"%s is uptodate\n",fname); | |
210 | } | |
211 | return updated; | |
c627d613 AT |
212 | } |
213 | ||
214 | ||
34ccb63e AT |
215 | void sig_int(void) |
216 | { | |
d5a0b483 WD |
217 | /* KLUGE: if the user hits Ctrl-C while ssh is prompting |
218 | * for a password, then our cleanup's sending of a SIGUSR1 | |
219 | * signal to all our children may kill ssh before it has a | |
220 | * chance to restore the tty settings (i.e. turn echo back | |
221 | * on). By sleeping for a short time, ssh gets a bigger | |
222 | * chance to do the right thing. If child processes are | |
223 | * not ssh waiting for a password, then this tiny delay | |
224 | * shouldn't hurt anything. */ | |
225 | msleep(400); | |
65417579 | 226 | exit_cleanup(RERR_SIGNAL); |
c627d613 AT |
227 | } |
228 | ||
229 | ||
c95da96a AT |
230 | /* finish off a file transfer, renaming the file and setting the permissions |
231 | and ownership */ | |
2f03f956 | 232 | void finish_transfer(char *fname, char *fnametmp, struct file_struct *file) |
c95da96a | 233 | { |
53dd3135 DD |
234 | if (make_backups && !make_backup(fname)) |
235 | return; | |
c95da96a AT |
236 | |
237 | /* move tmp file over real file */ | |
c7c11a0d | 238 | if (robust_rename(fnametmp,fname) != 0) { |
c95da96a | 239 | if (errno == EXDEV) { |
6a7cc46c | 240 | /* rename failed on cross-filesystem link. |
c95da96a | 241 | Copy the file instead. */ |
972a3619 | 242 | if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) { |
ea42541f WD |
243 | rprintf(FERROR, "copy %s -> \"%s\": %s\n", |
244 | full_fname(fnametmp), fname, | |
245 | strerror(errno)); | |
c95da96a AT |
246 | } else { |
247 | set_perms(fname,file,NULL,0); | |
248 | } | |
c95da96a | 249 | } else { |
ea42541f WD |
250 | rprintf(FERROR,"rename %s -> \"%s\": %s\n", |
251 | full_fname(fnametmp), fname, strerror(errno)); | |
c95da96a | 252 | } |
c7c11a0d | 253 | do_unlink(fnametmp); |
c95da96a AT |
254 | } else { |
255 | set_perms(fname,file,NULL,0); | |
256 | } | |
257 | } | |
c3e5e585 WD |
258 | |
259 | const char *who_am_i(void) | |
260 | { | |
261 | return am_sender ? "sender" : am_generator ? "generator" : "receiver"; | |
262 | } |