2 Copyright (C) Andrew Tridgell 1996
3 Copyright (C) Paul Mackerras 1996
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.
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.
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.
20 /* this file contains code used by more than one part of the rsync
27 extern int preserve_times;
31 extern int am_generator;
32 extern int preserve_uid;
33 extern int preserve_gid;
34 extern int preserve_perms;
35 extern int make_backups;
41 void free_sums(struct sum_struct *s)
43 if (s->sums) free(s->sums);
49 * delete a file or directory. If force_delete is set then delete
52 int delete_file(char *fname)
57 extern int force_delete;
63 ret = do_lstat(fname, &st);
65 ret = do_stat(fname, &st);
71 if (!S_ISDIR(st.st_mode)) {
72 if (robust_unlink(fname) == 0 || errno == ENOENT) return 0;
73 rprintf(FERROR, "delete_file: unlink %s failed: %s\n",
74 full_fname(fname), strerror(errno));
78 if (do_rmdir(fname) == 0 || errno == ENOENT) return 0;
79 if (!force_delete || !recurse ||
80 (errno != ENOTEMPTY && errno != EEXIST)) {
81 rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
82 full_fname(fname), strerror(errno));
86 /* now we do a recsursive delete on the directory ... */
89 rprintf(FERROR, "delete_file: opendir %s failed: %s\n",
90 full_fname(fname), strerror(errno));
94 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
95 char *dname = d_name(di);
96 if (strcmp(dname,".") == 0
97 || strcmp(dname,"..") == 0)
99 pathjoin(buf, sizeof buf, fname, dname);
101 rprintf(FINFO,"deleting %s\n", buf);
102 if (delete_file(buf) != 0) {
108 rprintf(FERROR, "delete_file: readdir %s failed: %s\n",
109 full_fname(fname), strerror(errno));
116 if (do_rmdir(fname) != 0) {
117 rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
118 full_fname(fname), strerror(errno));
125 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
130 int change_uid, change_gid;
132 if (dry_run) return 0;
135 if (link_stat(fname,&st2) != 0) {
136 rprintf(FERROR, "stat %s failed: %s\n",
137 full_fname(fname), strerror(errno));
143 if (preserve_times && !S_ISLNK(st->st_mode) &&
144 cmp_modtime(st->st_mtime, file->modtime) != 0) {
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)) {
149 rprintf(FERROR, "failed to set times on %s: %s\n",
150 full_fname(fname), strerror(errno));
157 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
158 change_gid = preserve_gid && file->gid != GID_NONE
159 && st->st_gid != file->gid;
160 if (change_uid || change_gid) {
161 if (verbose > 2 && !dry_run) {
164 "set uid of %s from %ld to %ld\n",
165 fname, (long)st->st_uid, (long)file->uid);
169 "set gid of %s from %ld to %ld\n",
170 fname, (long)st->st_gid, (long)file->gid);
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 */
178 rprintf(FERROR, "%s %s failed: %s\n",
179 change_uid ? "chown" : "chgrp",
180 full_fname(fname), strerror(errno));
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);
193 if (!S_ISLNK(st->st_mode)) {
194 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
196 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
197 rprintf(FERROR, "failed to set permissions on %s: %s\n",
198 full_fname(fname), strerror(errno));
205 if (verbose > 1 && report) {
207 rprintf(FINFO,"%s\n",fname);
209 rprintf(FINFO,"%s is uptodate\n",fname);
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. */
226 exit_cleanup(RERR_SIGNAL);
230 /* finish off a file transfer, renaming the file and setting the permissions
232 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
234 if (make_backups && !make_backup(fname))
237 /* move tmp file over real file */
238 if (robust_rename(fnametmp,fname) != 0) {
239 if (errno == EXDEV) {
240 /* rename failed on cross-filesystem link.
241 Copy the file instead. */
242 if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) {
243 rprintf(FERROR, "copy %s -> \"%s\": %s\n",
244 full_fname(fnametmp), fname,
247 set_perms(fname,file,NULL,0);
250 rprintf(FERROR,"rename %s -> \"%s\": %s\n",
251 full_fname(fnametmp), fname, strerror(errno));
255 set_perms(fname,file,NULL,0);
259 const char *who_am_i(void)
261 return am_sender ? "sender" : am_generator ? "generator" : "receiver";