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 && 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;
54 iconv_t ic_chck = (iconv_t)-1;
56 static 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... */
69 char *defset = default_charset();
72 && (ic_chck = iconv_open(defset, defset)) == (iconv_t)-1) {
73 rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
75 exit_cleanup(RERR_UNSUPPORTED);
83 void free_sums(struct sum_struct *s)
85 if (s->sums) free(s->sums);
89 /* This is only called when we aren't preserving permissions. Figure out what
90 * the permissions should be and return them merged back into the mode. */
91 mode_t dest_mode(mode_t flist_mode, mode_t dest_mode, int exists)
93 /* If the file already exists, we'll return the local permissions,
94 * possibly tweaked by the --executability option. */
96 if (preserve_executability && S_ISREG(flist_mode)) {
97 /* If the source file is executable, grant execute
98 * rights to everyone who can read, but ONLY if the
99 * file isn't already executable. */
100 if (!(flist_mode & 0111))
102 else if (!(dest_mode & 0111))
103 dest_mode |= (dest_mode & 0444) >> 2;
106 dest_mode = flist_mode & ACCESSPERMS & ~orig_umask;
107 return (flist_mode & ~CHMOD_BITS) | (dest_mode & CHMOD_BITS);
110 int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st,
115 int change_uid, change_gid;
120 if (link_stat(fname, &st2, 0) < 0) {
121 rsyserr(FERROR, errno, "stat %s failed",
126 if (!preserve_perms && S_ISDIR(file->mode)
127 && st->st_mode & S_ISGID) {
128 /* We just created this directory and its setgid
129 * bit is on, so make sure it stays on. */
130 file->mode |= S_ISGID;
134 if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
135 flags |= ATTRS_SKIP_MTIME;
136 if (!(flags & ATTRS_SKIP_MTIME)
137 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
138 int ret = set_modtime(fname, file->modtime, st->st_mode);
140 rsyserr(FERROR, errno, "failed to set times on %s",
144 if (ret == 0) /* ret == 1 if symlink could not be set */
148 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
149 change_gid = preserve_gid && file->gid != GID_NONE
150 && st->st_gid != file->gid;
151 #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
152 if (S_ISLNK(st->st_mode))
156 if (change_uid || change_gid) {
160 "set uid of %s from %ld to %ld\n",
162 (long)st->st_uid, (long)file->uid);
166 "set gid of %s from %ld to %ld\n",
168 (long)st->st_gid, (long)file->gid);
172 change_uid ? file->uid : st->st_uid,
173 change_gid ? file->gid : st->st_gid) != 0) {
174 /* shouldn't have attempted to change uid or gid
175 * unless have the privilege */
176 rsyserr(FERROR, errno, "%s %s failed",
177 change_uid ? "chown" : "chgrp",
181 /* a lchown had been done - we have to re-stat if the
182 * destination had the setuid or setgid bits set due
183 * to the side effect of the chown call */
184 if (st->st_mode & (S_ISUID | S_ISGID)) {
186 keep_dirlinks && S_ISDIR(st->st_mode));
192 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
193 int ret = do_chmod(fname, file->mode);
195 rsyserr(FERROR, errno,
196 "failed to set permissions on %s",
200 if (ret == 0) /* ret == 1 if symlink could not be set */
205 if (verbose > 1 && flags & ATTRS_REPORT) {
206 enum logcode code = daemon_log_format_has_i || dry_run
209 rprintf(code, "%s\n", fname);
211 rprintf(code, "%s is uptodate\n", fname);
216 RETSIGTYPE sig_int(UNUSED(int val))
218 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
219 * for a password, then our cleanup's sending of a SIGUSR1
220 * signal to all our children may kill ssh before it has a
221 * chance to restore the tty settings (i.e. turn echo back
222 * on). By sleeping for a short time, ssh gets a bigger
223 * chance to do the right thing. If child processes are
224 * not ssh waiting for a password, then this tiny delay
225 * shouldn't hurt anything. */
227 exit_cleanup(RERR_SIGNAL);
230 /* Finish off a file transfer: renaming the file and setting the file's
231 * attributes (e.g. permissions, ownership, etc.). If partialptr is not
232 * NULL and the robust_rename() call is forced to copy the temp file, we
233 * stage the file into the partial-dir and then rename it into place. */
234 void finish_transfer(char *fname, char *fnametmp, char *partialptr,
235 struct file_struct *file, int ok_to_set_time,
236 int overwriting_basis)
242 rprintf(FINFO, "finishing %s\n", fname);
244 goto do_set_file_attrs;
247 if (make_backups && overwriting_basis && !make_backup(fname))
250 /* Change permissions before putting the file into place. */
251 set_file_attrs(fnametmp, file, NULL,
252 ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
254 /* move tmp file over real file */
256 rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
257 ret = robust_rename(fnametmp, fname, partialptr,
258 file->mode & INITACCESSPERMS);
260 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
261 ret == -2 ? "copy" : "rename",
262 full_fname(fnametmp), fname);
267 /* The file was moved into place (not copied), so it's done. */
270 /* The file was copied, so tweak the perms of the copied file. If it
271 * was copied to partialptr, move it into its final destination. */
272 fnametmp = partialptr ? partialptr : fname;
275 set_file_attrs(fnametmp, file, NULL,
276 ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
279 if (do_rename(fnametmp, fname) < 0) {
280 rsyserr(FERROR, errno, "rename %s -> \"%s\"",
281 full_fname(fnametmp), fname);
283 handle_partial_dir(partialptr, PDIR_DELETE);
287 const char *who_am_i(void)
290 return am_server ? "server" : "client";
291 return am_sender ? "sender" : am_generator ? "generator" : "receiver";