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
24 #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
27 #if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
28 #include <libcharset.h>
29 #elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
35 extern int daemon_log_format_has_i;
36 extern int preserve_perms;
37 extern int preserve_executability;
38 extern int preserve_times;
39 extern int omit_dir_times;
40 extern int orig_umask;
44 extern int am_generator;
45 extern int am_starting_up;
46 extern int preserve_uid;
47 extern int preserve_gid;
49 extern int keep_dirlinks;
50 extern int make_backups;
51 extern struct stats stats;
53 #if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
54 iconv_t ic_chck = (iconv_t)-1;
56 static const char *default_charset(void)
58 #if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
59 return locale_charset();
60 #elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
61 return nl_langinfo(CODESET);
63 return ""; /* Works with (at the very least) gnu iconv... */
74 defset = default_charset();
76 /* It's OK if this fails... */
77 ic_chck = iconv_open(defset, defset);
80 if (ic_chck == (iconv_t)-1) {
82 "note: iconv_open(\"%s\", \"%s\") failed (%d)"
83 " -- using isprint() instead of iconv().\n",
84 defset, defset, errno);
87 "note: iconv_open(\"%s\", \"%s\") succeeded.\n",
97 void free_sums(struct sum_struct *s)
99 if (s->sums) free(s->sums);
103 /* This is only called when we aren't preserving permissions. Figure out what
104 * the permissions should be and return them merged back into the mode. */
105 mode_t dest_mode(mode_t flist_mode, mode_t dest_mode, int exists)
107 /* If the file already exists, we'll return the local permissions,
108 * possibly tweaked by the --executability option. */
110 if (preserve_executability && S_ISREG(flist_mode)) {
111 /* If the source file is executable, grant execute
112 * rights to everyone who can read, but ONLY if the
113 * file isn't already executable. */
114 if (!(flist_mode & 0111))
116 else if (!(dest_mode & 0111))
117 dest_mode |= (dest_mode & 0444) >> 2;
120 dest_mode = flist_mode & ACCESSPERMS & ~orig_umask;
121 return (flist_mode & ~CHMOD_BITS) | (dest_mode & CHMOD_BITS);
124 int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st,
129 int change_uid, change_gid;
134 if (link_stat(fname, &st2, 0) < 0) {
135 rsyserr(FERROR, errno, "stat %s failed",
140 if (!preserve_perms && S_ISDIR(file->mode)
141 && st->st_mode & S_ISGID) {
142 /* We just created this directory and its setgid
143 * bit is on, so make sure it stays on. */
144 file->mode |= S_ISGID;
148 if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
149 flags |= ATTRS_SKIP_MTIME;
150 if (!(flags & ATTRS_SKIP_MTIME)
151 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
152 int ret = set_modtime(fname, file->modtime, st->st_mode);
154 rsyserr(FERROR, errno, "failed to set times on %s",
158 if (ret == 0) /* ret == 1 if symlink could not be set */
162 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
163 change_gid = preserve_gid && file->gid != GID_NONE
164 && st->st_gid != file->gid;
165 #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
166 if (S_ISLNK(st->st_mode))
170 if (change_uid || change_gid) {
174 "set uid of %s from %ld to %ld\n",
176 (long)st->st_uid, (long)file->uid);
180 "set gid of %s from %ld to %ld\n",
182 (long)st->st_gid, (long)file->gid);
186 change_uid ? file->uid : st->st_uid,
187 change_gid ? file->gid : st->st_gid) != 0) {
188 /* shouldn't have attempted to change uid or gid
189 * unless have the privilege */
190 rsyserr(FERROR, errno, "%s %s failed",
191 change_uid ? "chown" : "chgrp",
195 /* a lchown had been done - we have to re-stat if the
196 * destination had the setuid or setgid bits set due
197 * to the side effect of the chown call */
198 if (st->st_mode & (S_ISUID | S_ISGID)) {
200 keep_dirlinks && S_ISDIR(st->st_mode));
206 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
207 int ret = do_chmod(fname, file->mode);
209 rsyserr(FERROR, errno,
210 "failed to set permissions on %s",
214 if (ret == 0) /* ret == 1 if symlink could not be set */
219 if (verbose > 1 && flags & ATTRS_REPORT) {
220 enum logcode code = daemon_log_format_has_i || dry_run
223 rprintf(code, "%s\n", fname);
225 rprintf(code, "%s is uptodate\n", fname);
230 RETSIGTYPE sig_int(UNUSED(int val))
232 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
233 * for a password, then our cleanup's sending of a SIGUSR1
234 * signal to all our children may kill ssh before it has a
235 * chance to restore the tty settings (i.e. turn echo back
236 * on). By sleeping for a short time, ssh gets a bigger
237 * chance to do the right thing. If child processes are
238 * not ssh waiting for a password, then this tiny delay
239 * shouldn't hurt anything. */
241 exit_cleanup(RERR_SIGNAL);
244 /* Finish off a file transfer: renaming the file and setting the file's
245 * attributes (e.g. permissions, ownership, etc.). If partialptr is not
246 * NULL and the robust_rename() call is forced to copy the temp file, we
247 * stage the file into the partial-dir and then rename it into place. */
248 void finish_transfer(char *fname, char *fnametmp, char *partialptr,
249 struct file_struct *file, int ok_to_set_time,
250 int overwriting_basis)
256 rprintf(FINFO, "finishing %s\n", fname);
258 goto do_set_file_attrs;
261 if (make_backups && overwriting_basis && !make_backup(fname))
264 /* Change permissions before putting the file into place. */
265 set_file_attrs(fnametmp, file, NULL,
266 ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
268 /* move tmp file over real file */
270 rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
271 ret = robust_rename(fnametmp, fname, partialptr,
272 file->mode & INITACCESSPERMS);
274 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
275 ret == -2 ? "copy" : "rename",
276 full_fname(fnametmp), fname);
281 /* The file was moved into place (not copied), so it's done. */
284 /* The file was copied, so tweak the perms of the copied file. If it
285 * was copied to partialptr, move it into its final destination. */
286 fnametmp = partialptr ? partialptr : fname;
289 set_file_attrs(fnametmp, file, NULL,
290 ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
293 if (do_rename(fnametmp, fname) < 0) {
294 rsyserr(FERROR, errno, "rename %s -> \"%s\"",
295 full_fname(fnametmp), fname);
297 handle_partial_dir(partialptr, PDIR_DELETE);
301 const char *who_am_i(void)
304 return am_server ? "server" : "client";
305 return am_sender ? "sender" : am_generator ? "generator" : "receiver";