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;
28 extern int omit_dir_times;
32 extern int am_generator;
33 extern int preserve_uid;
34 extern int preserve_gid;
35 extern int force_delete;
37 extern int keep_dirlinks;
38 extern int make_backups;
39 extern char *backup_dir;
46 void free_sums(struct sum_struct *s)
48 if (s->sums) free(s->sums);
54 * delete a file or directory. If force_delete is set then delete
57 int delete_file(char *fname, int flags)
65 if (!(flags & DEL_DIR)) {
66 if (robust_unlink(fname) == 0) {
67 if (verbose && !(flags & DEL_TERSE)) {
68 rprintf(FINFO, "deleting %s\n",
75 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
80 zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
81 && !(flags & DEL_NO_RECURSE);
82 if (dry_run && zap_dir)
84 else if (do_rmdir(fname) == 0) {
85 if (verbose && !(flags & DEL_TERSE)) {
86 rprintf(FINFO, "deleting %s/\n",
93 if (!zap_dir || (errno != ENOTEMPTY && errno != EEXIST)) {
94 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
99 /* now we do a recsursive delete on the directory ... */
100 if (!(d = opendir(fname))) {
101 rsyserr(FERROR, errno, "delete_file: opendir %s failed",
106 if (!(flags & DEL_TERSE)) {
108 rprintf(FINFO, "deleting %s/\n", safe_fname(fname));
112 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
113 char *dname = d_name(di);
114 if (dname[0] == '.' && (dname[1] == '\0'
115 || (dname[1] == '.' && dname[2] == '\0')))
117 pathjoin(buf, sizeof buf, fname, dname);
119 if (do_lstat(buf, &st) < 0)
121 if (S_ISDIR(st.st_mode))
127 rprintf(FINFO, "deleting %s%s\n", safe_fname(buf),
128 flags & DEL_DIR ? "/" : "");
130 if (delete_file(buf, flags) != 0) {
136 rsyserr(FERROR, errno, "delete_file: readdir %s failed",
144 if (do_rmdir(fname) != 0 && errno != ENOENT) {
145 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
153 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
158 int change_uid, change_gid;
163 if (link_stat(fname, &st2, 0) < 0) {
164 rsyserr(FERROR, errno, "stat %s failed",
171 if (!preserve_times || S_ISLNK(st->st_mode)
172 || (S_ISDIR(st->st_mode)
173 && (omit_dir_times || (make_backups && !backup_dir))))
174 flags |= PERMS_SKIP_MTIME;
175 if (!(flags & PERMS_SKIP_MTIME)
176 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
177 if (set_modtime(fname,file->modtime) != 0) {
178 rsyserr(FERROR, errno, "failed to set times on %s",
185 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
186 change_gid = preserve_gid && file->gid != GID_NONE
187 && st->st_gid != file->gid;
188 #if !HAVE_LCHOWN && !CHOWN_MODIFIES_SYMLINK
189 if (S_ISLNK(st->st_mode))
193 if (change_uid || change_gid) {
197 "set uid of %s from %ld to %ld\n",
199 (long)st->st_uid, (long)file->uid);
203 "set gid of %s from %ld to %ld\n",
205 (long)st->st_gid, (long)file->gid);
209 change_uid ? file->uid : st->st_uid,
210 change_gid ? file->gid : st->st_gid) != 0) {
211 /* shouldn't have attempted to change uid or gid
212 * unless have the privilege */
213 rsyserr(FERROR, errno, "%s %s failed",
214 change_uid ? "chown" : "chgrp",
218 /* a lchown had been done - we have to re-stat if the
219 * destination had the setuid or setgid bits set due
220 * to the side effect of the chown call */
221 if (st->st_mode & (S_ISUID | S_ISGID)) {
223 keep_dirlinks && S_ISDIR(st->st_mode));
229 if (!S_ISLNK(st->st_mode)) {
230 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
232 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
233 rsyserr(FERROR, errno, "failed to set permissions on %s",
241 if (verbose > 1 && flags & PERMS_REPORT) {
243 rprintf(FINFO, "%s\n", safe_fname(fname));
245 rprintf(FINFO, "%s is uptodate\n", safe_fname(fname));
253 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
254 * for a password, then our cleanup's sending of a SIGUSR1
255 * signal to all our children may kill ssh before it has a
256 * chance to restore the tty settings (i.e. turn echo back
257 * on). By sleeping for a short time, ssh gets a bigger
258 * chance to do the right thing. If child processes are
259 * not ssh waiting for a password, then this tiny delay
260 * shouldn't hurt anything. */
262 exit_cleanup(RERR_SIGNAL);
266 /* finish off a file transfer, renaming the file and setting the permissions
268 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
269 int ok_to_set_time, int overwriting_basis)
275 rprintf(FINFO, "finishing %s\n", safe_fname(fname));
279 if (make_backups && overwriting_basis && !make_backup(fname))
282 /* Change permissions before putting the file into place. */
283 set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
285 /* move tmp file over real file */
287 rprintf(FINFO, "renaming %s to %s\n",
288 safe_fname(fnametmp), safe_fname(fname));
290 ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
292 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
293 ret == -2 ? "copy" : "rename",
294 full_fname(fnametmp), safe_fname(fname));
299 /* The file was moved into place (not copied), so it's done. */
303 set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
306 const char *who_am_i(void)
309 return am_server ? "server" : "client";
310 return am_sender ? "sender" : am_generator ? "generator" : "receiver";