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;
31 extern int am_generator;
32 extern int preserve_uid;
33 extern int preserve_gid;
34 extern int force_delete;
36 extern int keep_dirlinks;
37 extern int make_backups;
38 extern char *backup_dir;
45 void free_sums(struct sum_struct *s)
47 if (s->sums) free(s->sums);
53 * delete a file or directory. If force_delete is set then delete
56 int delete_file(char *fname, int flags)
64 if (!(flags & DEL_DIR)) {
65 if (robust_unlink(fname) == 0) {
66 if (verbose && !(flags & DEL_TERSE)) {
67 rprintf(FINFO, "deleting %s\n",
74 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
79 zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
80 && !(flags & DEL_NO_RECURSE);
81 if (dry_run && zap_dir)
83 else if (do_rmdir(fname) == 0) {
84 if (verbose && !(flags & DEL_TERSE)) {
85 rprintf(FINFO, "deleting %s/\n",
92 if (!zap_dir || (errno != ENOTEMPTY && errno != EEXIST)) {
93 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
98 /* now we do a recsursive delete on the directory ... */
99 if (!(d = opendir(fname))) {
100 rsyserr(FERROR, errno, "delete_file: opendir %s failed",
105 if (!(flags & DEL_TERSE)) {
107 rprintf(FINFO, "deleting %s/\n", safe_fname(fname));
111 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
112 char *dname = d_name(di);
113 if (dname[0] == '.' && (dname[1] == '\0'
114 || (dname[1] == '.' && dname[2] == '\0')))
116 pathjoin(buf, sizeof buf, fname, dname);
118 if (do_lstat(buf, &st) < 0)
120 if (S_ISDIR(st.st_mode))
126 rprintf(FINFO, "deleting %s%s\n", safe_fname(buf),
127 flags & DEL_DIR ? "/" : "");
128 if (delete_file(buf, flags) != 0) {
134 rsyserr(FERROR, errno, "delete_file: readdir %s failed",
142 if (do_rmdir(fname) != 0 && errno != ENOENT) {
143 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
151 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
156 int change_uid, change_gid;
161 if (link_stat(fname, &st2, 0) < 0) {
162 rsyserr(FERROR, errno, "stat %s failed",
169 if (!preserve_times || S_ISLNK(st->st_mode)
170 || (S_ISDIR(st->st_mode)
171 && (omit_dir_times || (make_backups && !backup_dir))))
172 flags |= PERMS_SKIP_MTIME;
173 if (!(flags & PERMS_SKIP_MTIME)
174 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
175 if (set_modtime(fname,file->modtime) != 0) {
176 rsyserr(FERROR, errno, "failed to set times on %s",
183 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
184 change_gid = preserve_gid && file->gid != GID_NONE
185 && st->st_gid != file->gid;
186 #if !HAVE_LCHOWN && !CHOWN_MODIFIES_SYMLINK
187 if (S_ISLNK(st->st_mode))
191 if (change_uid || change_gid) {
195 "set uid of %s from %ld to %ld\n",
196 fname, (long)st->st_uid, (long)file->uid);
200 "set gid of %s from %ld to %ld\n",
201 fname, (long)st->st_gid, (long)file->gid);
205 change_uid ? file->uid : st->st_uid,
206 change_gid ? file->gid : st->st_gid) != 0) {
207 /* shouldn't have attempted to change uid or gid
208 * unless have the privilege */
209 rsyserr(FERROR, errno, "%s %s failed",
210 change_uid ? "chown" : "chgrp",
214 /* a lchown had been done - we have to re-stat if the
215 * destination had the setuid or setgid bits set due
216 * to the side effect of the chown call */
217 if (st->st_mode & (S_ISUID | S_ISGID)) {
219 keep_dirlinks && S_ISDIR(st->st_mode));
225 if (!S_ISLNK(st->st_mode)) {
226 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
228 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
229 rsyserr(FERROR, errno, "failed to set permissions on %s",
237 if (verbose > 1 && flags & PERMS_REPORT) {
239 rprintf(FINFO,"%s\n",fname);
241 rprintf(FINFO,"%s is uptodate\n",fname);
249 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
250 * for a password, then our cleanup's sending of a SIGUSR1
251 * signal to all our children may kill ssh before it has a
252 * chance to restore the tty settings (i.e. turn echo back
253 * on). By sleeping for a short time, ssh gets a bigger
254 * chance to do the right thing. If child processes are
255 * not ssh waiting for a password, then this tiny delay
256 * shouldn't hurt anything. */
258 exit_cleanup(RERR_SIGNAL);
262 /* finish off a file transfer, renaming the file and setting the permissions
264 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
265 int ok_to_set_time, int overwriting_basis)
271 rprintf(FINFO, "finishing %s\n", fname);
275 if (make_backups && overwriting_basis && !make_backup(fname))
278 /* Change permissions before putting the file into place. */
279 set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
281 /* move tmp file over real file */
283 rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
284 ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
286 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
287 ret == -2 ? "copy" : "rename",
288 full_fname(fnametmp), fname);
293 /* The file was moved into place (not copied), so it's done. */
297 set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
300 const char *who_am_i(void)
302 return am_sender ? "sender" : am_generator ? "generator" : "receiver";