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 am_starting_up;
35 extern int preserve_uid;
36 extern int preserve_gid;
38 extern int keep_dirlinks;
39 extern int make_backups;
40 extern struct stats stats;
46 void free_sums(struct sum_struct *s)
48 if (s->sums) free(s->sums);
53 int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
58 int change_uid, change_gid;
63 if (link_stat(fname, &st2, 0) < 0) {
64 rsyserr(FERROR, errno, "stat %s failed",
71 if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
72 flags |= PERMS_SKIP_MTIME;
73 if (!(flags & PERMS_SKIP_MTIME)
74 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
75 int ret = set_modtime(fname, file->modtime, st->st_mode);
77 rsyserr(FERROR, errno, "failed to set times on %s",
81 if (ret == 0) /* ret == 1 if symlink could not be set */
85 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
86 change_gid = preserve_gid && file->gid != GID_NONE
87 && st->st_gid != file->gid;
88 #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
89 if (S_ISLNK(st->st_mode))
93 if (change_uid || change_gid) {
97 "set uid of %s from %ld to %ld\n",
99 (long)st->st_uid, (long)file->uid);
103 "set gid of %s from %ld to %ld\n",
105 (long)st->st_gid, (long)file->gid);
109 change_uid ? file->uid : st->st_uid,
110 change_gid ? file->gid : st->st_gid) != 0) {
111 /* shouldn't have attempted to change uid or gid
112 * unless have the privilege */
113 rsyserr(FERROR, errno, "%s %s failed",
114 change_uid ? "chown" : "chgrp",
118 /* a lchown had been done - we have to re-stat if the
119 * destination had the setuid or setgid bits set due
120 * to the side effect of the chown call */
121 if (st->st_mode & (S_ISUID | S_ISGID)) {
123 keep_dirlinks && S_ISDIR(st->st_mode));
129 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
130 int ret = do_chmod(fname, file->mode);
132 rsyserr(FERROR, errno,
133 "failed to set permissions on %s",
137 if (ret == 0) /* ret == 1 if symlink could not be set */
142 if (verbose > 1 && flags & PERMS_REPORT) {
143 enum logcode code = daemon_log_format_has_i || dry_run
146 rprintf(code, "%s\n", safe_fname(fname));
148 rprintf(code, "%s is uptodate\n", safe_fname(fname));
156 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
157 * for a password, then our cleanup's sending of a SIGUSR1
158 * signal to all our children may kill ssh before it has a
159 * chance to restore the tty settings (i.e. turn echo back
160 * on). By sleeping for a short time, ssh gets a bigger
161 * chance to do the right thing. If child processes are
162 * not ssh waiting for a password, then this tiny delay
163 * shouldn't hurt anything. */
165 exit_cleanup(RERR_SIGNAL);
169 /* finish off a file transfer, renaming the file and setting the permissions
171 void finish_transfer(char *fname, char *fnametmp, struct file_struct *file,
172 int ok_to_set_time, int overwriting_basis)
178 rprintf(FINFO, "finishing %s\n", safe_fname(fname));
182 if (make_backups && overwriting_basis && !make_backup(fname))
185 /* Change permissions before putting the file into place. */
186 set_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
188 /* move tmp file over real file */
190 rprintf(FINFO, "renaming %s to %s\n",
191 safe_fname(fnametmp), safe_fname(fname));
193 ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS);
195 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
196 ret == -2 ? "copy" : "rename",
197 full_fname(fnametmp), safe_fname(fname));
202 /* The file was moved into place (not copied), so it's done. */
206 set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME);
209 const char *who_am_i(void)
212 return am_server ? "server" : "client";
213 return am_sender ? "sender" : am_generator ? "generator" : "receiver";