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 make_backups;
36 extern char *backup_dir;
42 void free_sums(struct sum_struct *s)
44 if (s->sums) free(s->sums);
50 * delete a file or directory. If force_delete is set then delete
53 int delete_file(char *fname)
62 ret = do_lstat(fname, &st);
64 ret = do_stat(fname, &st);
69 if (!S_ISDIR(st.st_mode)) {
70 if (robust_unlink(fname) == 0 || errno == ENOENT)
72 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
77 if (do_rmdir(fname) == 0 || errno == ENOENT)
79 if (!force_delete || !recurse
80 || (errno != ENOTEMPTY && errno != EEXIST)) {
81 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
86 /* now we do a recsursive delete on the directory ... */
87 if (!(d = opendir(fname))) {
88 rsyserr(FERROR, errno, "delete_file: opendir %s failed",
93 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
94 char *dname = d_name(di);
95 if (dname[0] == '.' && (dname[1] == '\0'
96 || (dname[1] == '.' && dname[2] == '\0')))
98 pathjoin(buf, sizeof buf, fname, dname);
100 rprintf(FINFO, "deleting %s\n", buf);
101 if (delete_file(buf) != 0) {
107 rsyserr(FERROR, errno, "delete_file: readdir %s failed",
115 if (do_rmdir(fname) != 0) {
116 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
124 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
129 int change_uid, change_gid;
135 if (link_stat(fname,&st2) != 0) {
136 rsyserr(FERROR, errno, "stat %s failed",
143 if (!preserve_times || S_ISLNK(st->st_mode)
144 || (make_backups && !backup_dir && S_ISDIR(st->st_mode)))
145 flags |= PERMS_SKIP_MTIME;
146 if (!(flags & PERMS_SKIP_MTIME)
147 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
148 /* don't complain about not setting times on directories
149 * because some filesystems can't do it */
150 if (set_modtime(fname,file->modtime) != 0 &&
151 !S_ISDIR(st->st_mode)) {
152 rsyserr(FERROR, errno, "failed to set times on %s",
159 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
160 change_gid = preserve_gid && file->gid != GID_NONE
161 && st->st_gid != file->gid;
162 if (change_uid || change_gid) {
166 "set uid of %s from %ld to %ld\n",
167 fname, (long)st->st_uid, (long)file->uid);
171 "set gid of %s from %ld to %ld\n",
172 fname, (long)st->st_gid, (long)file->gid);
176 change_uid ? file->uid : st->st_uid,
177 change_gid ? file->gid : st->st_gid) != 0) {
178 /* shouldn't have attempted to change uid or gid
179 * unless have the privilege */
180 rsyserr(FERROR, errno, "%s %s failed",
181 change_uid ? "chown" : "chgrp",
185 /* a lchown had been done - we have to re-stat if the
186 * destination had the setuid or setgid bits set due
187 * to the side effect of the chown call */
188 if (st->st_mode & (S_ISUID | S_ISGID)) {
189 link_stat(fname, st);
195 if (!S_ISLNK(st->st_mode)) {
196 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
198 if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) {
199 rsyserr(FERROR, errno, "failed to set permissions on %s",
207 if (verbose > 1 && flags & PERMS_REPORT) {
209 rprintf(FINFO,"%s\n",fname);
211 rprintf(FINFO,"%s is uptodate\n",fname);
219 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
220 * for a password, then our cleanup's sending of a SIGUSR1
221 * signal to all our children may kill ssh before it has a
222 * chance to restore the tty settings (i.e. turn echo back
223 * on). By sleeping for a short time, ssh gets a bigger
224 * chance to do the right thing. If child processes are
225 * not ssh waiting for a password, then this tiny delay
226 * shouldn't hurt anything. */
228 exit_cleanup(RERR_SIGNAL);
232 /* finish off a file transfer, renaming the file and setting the permissions
234 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
239 if (make_backups && !make_backup(fname))
242 /* move tmp file over real file */
243 ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
245 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
246 ret == -2 ? "copy" : "rename",
247 full_fname(fnametmp), fname);
250 set_perms(fname, file, NULL,
251 ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
255 const char *who_am_i(void)
257 return am_sender ? "sender" : am_generator ? "generator" : "receiver";