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;
29 extern int preserve_uid;
30 extern int preserve_gid;
31 extern int preserve_perms;
32 extern int make_backups;
38 void free_sums(struct sum_struct *s)
40 if (s->sums) free(s->sums);
46 * delete a file or directory. If force_delete is set then delete
49 int delete_file(char *fname)
54 extern int force_delete;
60 ret = do_lstat(fname, &st);
62 ret = do_stat(fname, &st);
68 if (!S_ISDIR(st.st_mode)) {
69 if (robust_unlink(fname) == 0 || errno == ENOENT) return 0;
70 rprintf(FERROR, "delete_file: unlink %s failed: %s\n",
71 full_fname(fname), strerror(errno));
75 if (do_rmdir(fname) == 0 || errno == ENOENT) return 0;
76 if (!force_delete || !recurse ||
77 (errno != ENOTEMPTY && errno != EEXIST)) {
78 rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
79 full_fname(fname), strerror(errno));
83 /* now we do a recsursive delete on the directory ... */
86 rprintf(FERROR, "delete_file: opendir %s failed: %s\n",
87 full_fname(fname), strerror(errno));
91 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
92 char *dname = d_name(di);
93 if (strcmp(dname,".") == 0
94 || strcmp(dname,"..") == 0)
96 snprintf(buf, sizeof(buf), "%s/%s", fname, dname);
98 rprintf(FINFO,"deleting %s\n", buf);
99 if (delete_file(buf) != 0) {
105 rprintf(FERROR, "delete_file: readdir %s failed: %s\n",
106 full_fname(fname), strerror(errno));
113 if (do_rmdir(fname) != 0) {
114 rprintf(FERROR, "delete_file: rmdir %s failed: %s\n",
115 full_fname(fname), strerror(errno));
122 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
127 int change_uid, change_gid;
129 if (dry_run) return 0;
132 if (link_stat(fname,&st2) != 0) {
133 rprintf(FERROR, "stat %s failed: %s\n",
134 full_fname(fname), strerror(errno));
140 if (preserve_times && !S_ISLNK(st->st_mode) &&
141 cmp_modtime(st->st_mtime, file->modtime) != 0) {
142 /* don't complain about not setting times on directories
143 because some filesystems can't do it */
144 if (set_modtime(fname,file->modtime) != 0 &&
145 !S_ISDIR(st->st_mode)) {
146 rprintf(FERROR, "failed to set times on %s: %s\n",
147 full_fname(fname), strerror(errno));
154 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
155 change_gid = preserve_gid && file->gid != (gid_t)-1
156 && st->st_gid != file->gid;
157 if (change_uid || change_gid) {
159 change_uid?file->uid:st->st_uid,
160 change_gid?file->gid:st->st_gid) != 0) {
161 /* shouldn't have attempted to change uid or gid
162 unless have the privilege */
163 rprintf(FERROR, "chown %s failed: %s\n",
164 full_fname(fname), strerror(errno));
167 /* a lchown had been done - we have to re-stat if the
168 destination had the setuid or setgid bits set due
169 to the side effect of the chown call */
170 if (st->st_mode & (S_ISUID | S_ISGID)) {
171 link_stat(fname, st);
177 if (!S_ISLNK(st->st_mode)) {
178 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
180 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
181 rprintf(FERROR, "failed to set permissions on %s: %s\n",
182 full_fname(fname), strerror(errno));
189 if (verbose > 1 && report) {
191 rprintf(FINFO,"%s\n",fname);
193 rprintf(FINFO,"%s is uptodate\n",fname);
201 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
202 * for a password, then our cleanup's sending of a SIGUSR1
203 * signal to all our children may kill ssh before it has a
204 * chance to restore the tty settings (i.e. turn echo back
205 * on). By sleeping for a short time, ssh gets a bigger
206 * chance to do the right thing. If child processes are
207 * not ssh waiting for a password, then this tiny delay
208 * shouldn't hurt anything. */
210 exit_cleanup(RERR_SIGNAL);
214 /* finish off a file transfer, renaming the file and setting the permissions
216 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
218 if (make_backups && !make_backup(fname))
221 /* move tmp file over real file */
222 if (robust_rename(fnametmp,fname) != 0) {
223 if (errno == EXDEV) {
224 /* rename failed on cross-filesystem link.
225 Copy the file instead. */
226 if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) {
227 rprintf(FERROR, "copy %s -> \"%s\": %s\n",
228 full_fname(fnametmp), fname,
231 set_perms(fname,file,NULL,0);
234 rprintf(FERROR,"rename %s -> \"%s\": %s\n",
235 full_fname(fnametmp), fname, strerror(errno));
239 set_perms(fname,file,NULL,0);