3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
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; version 2 of the License.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 #include "wrappers-io.h"
20 #include <sys/types.h>
24 doitUnify(char const *src, struct stat const *src_stat,
25 char const *dst, struct stat const UNUSED *dst_stat)
27 size_t l = strlen(dst);
28 char tmpfile[l + sizeof(";XXXXXX")];
32 // at first, set the ILI flags on 'src'
33 if (vc_set_iattr_compat(src, src_stat->st_dev, src_stat->st_ino,
34 0, VC_IATTR_IUNLINK, VC_IATTR_IUNLINK,
35 &src_stat->st_mode)==-1)
38 // now, create a temporary filename
39 memcpy(tmpfile, dst, l);
40 memcpy(tmpfile+l, ";XXXXXX", 8);
41 fd = mkstemp(tmpfile);
49 // and rename the old file to this name
50 if (rename(dst, tmpfile)==-1) {
55 // now, link the src-file to dst
56 if (link(src, dst)==-1) {
60 if (rename(tmpfile, dst)==-1) {
61 perror("FATAL error in rename()");
76 doitDeUnify(char const UNUSED *src, struct stat const UNUSED *src_stat,
77 char const *dst, struct stat const UNUSED *dst_stat)
79 size_t l = strlen(dst);
80 char tmpfile[l + sizeof(";XXXXXX")];
85 fd_src = open(dst, O_RDONLY);
91 if (fstat(fd_src, &st)==-1) {
97 memcpy(tmpfile, dst, l);
98 memcpy(tmpfile+l, ";XXXXXX", 8);
99 fd_tmp = mkstemp(tmpfile);
107 if (fchown(fd_tmp, st.st_uid, st.st_gid)==-1 ||
108 fchmod(fd_tmp, st.st_mode)==-1) {
109 perror("fchown()/fchmod()");
117 ssize_t len = read(fd_src, buf, sizeof buf);
124 if (!WwriteAll(fd_tmp, buf, len)) goto err;
127 if (close(fd_src)==-1) {
131 if (close(fd_tmp)==-1) {
136 utm.actime = st.st_atime;
137 utm.modtime = st.st_mtime;
140 if (utime(tmpfile, &utm)==-1) {
145 if (unlink(dst)==-1) {
151 if (rename(tmpfile, dst)==-1) {
152 perror("FATAL error in rename()");
162 if (tmpfile[0]) unlink(tmpfile);