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 daemon_log_format_has_i;
28 extern int preserve_times;
29 extern int omit_dir_times;
33 extern int am_generator;
34 extern int preserve_uid;
35 extern int preserve_gid;
36 extern int force_delete;
39 extern int max_delete;
40 extern int keep_dirlinks;
41 extern int make_backups;
42 extern struct stats stats;
43 extern char *backup_dir;
44 extern char *log_format;
50 void free_sums(struct sum_struct *s)
52 if (s->sums) free(s->sums);
57 int deletion_count = 0; /* used to implement --max-delete */
60 * delete a file or directory. If force_delete is set then delete
63 int delete_file(char *fname, int mode, int flags)
71 if (max_delete && deletion_count >= max_delete)
75 if (robust_unlink(fname) == 0) {
76 if ((verbose || log_format) && !(flags & DEL_TERSE))
77 log_delete(fname, mode);
83 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
88 zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
89 && !(flags & DEL_NO_RECURSE);
90 if (dry_run && zap_dir)
92 else if (do_rmdir(fname) == 0) {
93 if ((verbose || log_format) && !(flags & DEL_TERSE))
94 log_delete(fname, mode);
100 if (!zap_dir || (errno != ENOTEMPTY && errno != EEXIST)) {
101 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
106 /* now we do a recsursive delete on the directory ... */
107 if (!(d = opendir(fname))) {
108 rsyserr(FERROR, errno, "delete_file: opendir %s failed",
113 if (!(flags & DEL_TERSE)) {
114 if (verbose || log_format)
115 log_delete(fname, mode);
119 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
120 char *dname = d_name(di);
121 if (dname[0] == '.' && (dname[1] == '\0'
122 || (dname[1] == '.' && dname[2] == '\0')))
124 pathjoin(buf, sizeof buf, fname, dname);
126 if (do_lstat(buf, &st) < 0)
128 if (verbose || log_format)
129 log_delete(buf, st.st_mode);
130 if (delete_file(buf, st.st_mode, flags) != 0) {
136 rsyserr(FERROR, errno, "delete_file: readdir %s failed",
144 if (max_delete && deletion_count >= max_delete)
146 if (do_rmdir(fname) != 0 && errno != ENOENT) {
147 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
156 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
161 int change_uid, change_gid;
166 if (link_stat(fname, &st2, 0) < 0) {
167 rsyserr(FERROR, errno, "stat %s failed",
174 if (!preserve_times || S_ISLNK(st->st_mode)
175 || (S_ISDIR(st->st_mode)
176 && (omit_dir_times || (make_backups && !backup_dir))))
177 flags |= PERMS_SKIP_MTIME;
178 if (!(flags & PERMS_SKIP_MTIME)
179 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
180 if (set_modtime(fname,file->modtime) != 0) {
181 rsyserr(FERROR, errno, "failed to set times on %s",
188 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
189 change_gid = preserve_gid && file->gid != GID_NONE
190 && st->st_gid != file->gid;
191 #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
192 if (S_ISLNK(st->st_mode))
196 if (change_uid || change_gid) {
200 "set uid of %s from %ld to %ld\n",
202 (long)st->st_uid, (long)file->uid);
206 "set gid of %s from %ld to %ld\n",
208 (long)st->st_gid, (long)file->gid);
212 change_uid ? file->uid : st->st_uid,
213 change_gid ? file->gid : st->st_gid) != 0) {
214 /* shouldn't have attempted to change uid or gid
215 * unless have the privilege */
216 rsyserr(FERROR, errno, "%s %s failed",
217 change_uid ? "chown" : "chgrp",
221 /* a lchown had been done - we have to re-stat if the
222 * destination had the setuid or setgid bits set due
223 * to the side effect of the chown call */
224 if (st->st_mode & (S_ISUID | S_ISGID)) {
226 keep_dirlinks && S_ISDIR(st->st_mode));
232 if (!S_ISLNK(st->st_mode)) {
233 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
235 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
236 rsyserr(FERROR, errno, "failed to set permissions on %s",
244 if (verbose > 1 && flags & PERMS_REPORT) {
245 enum logcode code = daemon_log_format_has_i || dry_run
248 rprintf(code, "%s\n", safe_fname(fname));
250 rprintf(code, "%s is uptodate\n", safe_fname(fname));
258 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
259 * for a password, then our cleanup's sending of a SIGUSR1
260 * signal to all our children may kill ssh before it has a
261 * chance to restore the tty settings (i.e. turn echo back
262 * on). By sleeping for a short time, ssh gets a bigger
263 * chance to do the right thing. If child processes are
264 * not ssh waiting for a password, then this tiny delay
265 * shouldn't hurt anything. */
267 exit_cleanup(RERR_SIGNAL);
271 /* finish off a file transfer, renaming the file and setting the permissions
273 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
274 int ok_to_set_time, int overwriting_basis)
280 rprintf(FINFO, "finishing %s\n", safe_fname(fname));
284 if (make_backups && overwriting_basis && !make_backup(fname))
287 /* Change permissions before putting the file into place. */
288 set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
290 /* move tmp file over real file */
292 rprintf(FINFO, "renaming %s to %s\n",
293 safe_fname(fnametmp), safe_fname(fname));
295 ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
297 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
298 ret == -2 ? "copy" : "rename",
299 full_fname(fnametmp), safe_fname(fname));
304 /* The file was moved into place (not copied), so it's done. */
308 set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
311 const char *who_am_i(void)
314 return am_server ? "server" : "client";
315 return am_sender ? "sender" : am_generator ? "generator" : "receiver";