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);
52 int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st,
57 int change_uid, change_gid;
62 if (link_stat(fname, &st2, 0) < 0) {
63 rsyserr(FERROR, errno, "stat %s failed",
70 if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
71 flags |= ATTRS_SKIP_MTIME;
72 if (!(flags & ATTRS_SKIP_MTIME)
73 && cmp_modtime(st->st_mtime, file->modtime) != 0) {
74 int ret = set_modtime(fname, file->modtime, st->st_mode);
76 rsyserr(FERROR, errno, "failed to set times on %s",
80 if (ret == 0) /* ret == 1 if symlink could not be set */
84 change_uid = am_root && preserve_uid && st->st_uid != file->uid;
85 change_gid = preserve_gid && file->gid != GID_NONE
86 && st->st_gid != file->gid;
87 #if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
88 if (S_ISLNK(st->st_mode))
92 if (change_uid || change_gid) {
96 "set uid of %s from %ld to %ld\n",
98 (long)st->st_uid, (long)file->uid);
102 "set gid of %s from %ld to %ld\n",
104 (long)st->st_gid, (long)file->gid);
108 change_uid ? file->uid : st->st_uid,
109 change_gid ? file->gid : st->st_gid) != 0) {
110 /* shouldn't have attempted to change uid or gid
111 * unless have the privilege */
112 rsyserr(FERROR, errno, "%s %s failed",
113 change_uid ? "chown" : "chgrp",
117 /* a lchown had been done - we have to re-stat if the
118 * destination had the setuid or setgid bits set due
119 * to the side effect of the chown call */
120 if (st->st_mode & (S_ISUID | S_ISGID)) {
122 keep_dirlinks && S_ISDIR(st->st_mode));
128 if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
129 int ret = do_chmod(fname, file->mode);
131 rsyserr(FERROR, errno,
132 "failed to set permissions on %s",
136 if (ret == 0) /* ret == 1 if symlink could not be set */
141 if (verbose > 1 && flags & ATTRS_REPORT) {
142 enum logcode code = daemon_log_format_has_i || dry_run
145 rprintf(code, "%s\n", fname);
147 rprintf(code, "%s is uptodate\n", fname);
154 /* KLUGE: if the user hits Ctrl-C while ssh is prompting
155 * for a password, then our cleanup's sending of a SIGUSR1
156 * signal to all our children may kill ssh before it has a
157 * chance to restore the tty settings (i.e. turn echo back
158 * on). By sleeping for a short time, ssh gets a bigger
159 * chance to do the right thing. If child processes are
160 * not ssh waiting for a password, then this tiny delay
161 * shouldn't hurt anything. */
163 exit_cleanup(RERR_SIGNAL);
166 /* Finish off a file transfer: renaming the file and setting the file's
167 * attributes (e.g. permissions, ownership, etc.). If partialptr is not
168 * NULL and the robust_rename() call is forced to copy the temp file, we
169 * stage the file into the partial-dir and then rename it into place. */
170 void finish_transfer(char *fname, char *fnametmp, char *partialptr,
171 struct file_struct *file, int ok_to_set_time,
172 int overwriting_basis)
178 rprintf(FINFO, "finishing %s\n", fname);
180 goto do_set_file_attrs;
183 if (make_backups && overwriting_basis && !make_backup(fname))
186 /* Change permissions before putting the file into place. */
187 set_file_attrs(fnametmp, file, NULL,
188 ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
190 /* move tmp file over real file */
192 rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
193 ret = robust_rename(fnametmp, fname, partialptr,
194 file->mode & INITACCESSPERMS);
196 rsyserr(FERROR, errno, "%s %s -> \"%s\"",
197 ret == -2 ? "copy" : "rename",
198 full_fname(fnametmp), fname);
203 /* The file was moved into place (not copied), so it's done. */
206 /* The file was copied, so tweak the perms of the copied file. If it
207 * was copied to partialptr, move it into its final destination. */
208 fnametmp = partialptr ? partialptr : fname;
211 set_file_attrs(fnametmp, file, NULL,
212 ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
215 if (do_rename(fnametmp, fname) < 0) {
216 rsyserr(FERROR, errno, "rename %s -> \"%s\"",
217 full_fname(fnametmp), fname);
219 handle_partial_dir(partialptr, PDIR_DELETE);
223 const char *who_am_i(void)
226 return am_server ? "server" : "client";
227 return am_sender ? "sender" : am_generator ? "generator" : "receiver";