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;
30 extern int am_generator;
31 extern int preserve_uid;
32 extern int preserve_gid;
33 extern int force_delete;
35 extern int keep_dirlinks;
36 extern int make_backups;
37 extern char *backup_dir;
44 void free_sums(struct sum_struct *s)
46 if (s->sums) free(s->sums);
52 * delete a file or directory. If force_delete is set then delete
55 int delete_file(char *fname, int flags)
62 if (!(flags & DEL_DIR)) {
63 if (robust_unlink(fname) == 0) {
64 if (verbose && !(flags & DEL_TERSE)) {
65 rprintf(FINFO, "deleting %s\n",
72 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
77 if (do_rmdir(fname) == 0) {
78 if (verbose && !(flags & DEL_TERSE)) {
79 rprintf(FINFO, "deleting %s/\n",
86 if ((flags & DEL_NO_RECURSE) || !force_delete || !recurse
87 || (errno != ENOTEMPTY && errno != EEXIST)) {
88 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
93 /* now we do a recsursive delete on the directory ... */
94 if (!(d = opendir(fname))) {
95 rsyserr(FERROR, errno, "delete_file: opendir %s failed",
100 if (!(flags & DEL_TERSE)) {
102 rprintf(FINFO, "deleting %s/\n", safe_fname(fname));
106 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
107 char *dname = d_name(di);
108 if (dname[0] == '.' && (dname[1] == '\0'
109 || (dname[1] == '.' && dname[2] == '\0')))
111 pathjoin(buf, sizeof buf, fname, dname);
113 if (do_lstat(buf, &st) < 0)
115 if (S_ISDIR(st.st_mode))
121 rprintf(FINFO, "deleting %s%s\n", safe_fname(buf),
122 flags & DEL_DIR ? "/" : "");
123 if (delete_file(buf, flags) != 0) {
129 rsyserr(FERROR, errno, "delete_file: readdir %s failed",
137 if (do_rmdir(fname) != 0 && errno != ENOENT) {
138 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
146 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
151 int change_uid, change_gid;
156 if (link_stat(fname, &st2, 0) < 0) {
157 rsyserr(FERROR, errno, "stat %s failed",
164 if (!preserve_times || S_ISLNK(st->st_mode)
165 || (make_backups && !backup_dir && S_ISDIR(st->st_mode)))
166 flags |= PERMS_SKIP_MTIME;
167 if (!(flags & PERMS_SKIP_MTIME)
168 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
169 /* don't complain about not setting times on directories
170 * because some filesystems can't do it */
171 if (set_modtime(fname,file->modtime) != 0 &&
172 !S_ISDIR(st->st_mode)) {
173 rsyserr(FERROR, errno, "failed to set times on %s",
180 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
181 change_gid = preserve_gid && file->gid != GID_NONE
182 && st->st_gid != file->gid;
183 #if !HAVE_LCHOWN && !CHOWN_MODIFIES_SYMLINK
184 if (S_ISLNK(st->st_mode))
188 if (change_uid || change_gid) {
192 "set uid of %s from %ld to %ld\n",
193 fname, (long)st->st_uid, (long)file->uid);
197 "set gid of %s from %ld to %ld\n",
198 fname, (long)st->st_gid, (long)file->gid);
202 change_uid ? file->uid : st->st_uid,
203 change_gid ? file->gid : st->st_gid) != 0) {
204 /* shouldn't have attempted to change uid or gid
205 * unless have the privilege */
206 rsyserr(FERROR, errno, "%s %s failed",
207 change_uid ? "chown" : "chgrp",
211 /* a lchown had been done - we have to re-stat if the
212 * destination had the setuid or setgid bits set due
213 * to the side effect of the chown call */
214 if (st->st_mode & (S_ISUID | S_ISGID)) {
216 keep_dirlinks && S_ISDIR(st->st_mode));
222 if (!S_ISLNK(st->st_mode)) {
223 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
225 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
226 rsyserr(FERROR, errno, "failed to set permissions on %s",
234 if (verbose > 1 && flags & PERMS_REPORT) {
236 rprintf(FINFO,"%s\n",fname);
238 rprintf(FINFO,"%s is uptodate\n",fname);
246 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
247 * for a password, then our cleanup's sending of a SIGUSR1
248 * signal to all our children may kill ssh before it has a
249 * chance to restore the tty settings (i.e. turn echo back
250 * on). By sleeping for a short time, ssh gets a bigger
251 * chance to do the right thing. If child processes are
252 * not ssh waiting for a password, then this tiny delay
253 * shouldn't hurt anything. */
255 exit_cleanup(RERR_SIGNAL);
259 /* finish off a file transfer, renaming the file and setting the permissions
261 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
262 int ok_to_set_time, int overwriting_basis)
268 rprintf(FINFO, "finishing %s\n", fname);
272 if (make_backups && overwriting_basis && !make_backup(fname))
275 /* Change permissions before putting the file into place. */
276 set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
278 /* move tmp file over real file */
280 rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
281 ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
283 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
284 ret == -2 ? "copy" : "rename",
285 full_fname(fnametmp), fname);
290 /* The file was moved into place (not copied), so it's done. */
294 set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
297 const char *who_am_i(void)
299 return am_sender ? "sender" : am_generator ? "generator" : "receiver";