2 Copyright (C) Andrew Tridgell 1998
3 Copyright (C) 2002 by Martin Pool
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.
23 * Syscall wrappers to ensure that nothing gets done in dry_run mode
24 * and to handle system peculiarities.
29 #if !MKNOD_CREATES_SOCKETS && HAVE_SYS_UN_H
36 extern int preserve_perms;
38 #define RETURN_ERROR_IF(x,e) \
46 #define RETURN_ERROR_IF_RO_OR_LO RETURN_ERROR_IF(read_only || list_only, EROFS)
48 int do_unlink(char *fname)
50 if (dry_run) return 0;
51 RETURN_ERROR_IF_RO_OR_LO;
55 int do_symlink(char *fname1, char *fname2)
57 if (dry_run) return 0;
58 RETURN_ERROR_IF_RO_OR_LO;
59 return symlink(fname1, fname2);
63 int do_link(char *fname1, char *fname2)
65 if (dry_run) return 0;
66 RETURN_ERROR_IF_RO_OR_LO;
67 return link(fname1, fname2);
71 int do_lchown(const char *path, uid_t owner, gid_t group)
73 if (dry_run) return 0;
74 RETURN_ERROR_IF_RO_OR_LO;
75 return lchown(path, owner, group);
78 int do_mknod(char *pathname, mode_t mode, dev_t dev)
80 if (dry_run) return 0;
81 RETURN_ERROR_IF_RO_OR_LO;
82 #if !MKNOD_CREATES_FIFOS && HAVE_MKFIFO
84 return mkfifo(pathname, mode);
86 #if !MKNOD_CREATES_SOCKETS && HAVE_SYS_UN_H
89 struct sockaddr_un saddr;
92 saddr.sun_family = AF_UNIX;
93 len = strlcpy(saddr.sun_path, pathname, sizeof saddr.sun_path);
94 #if HAVE_SOCKADDR_UN_LEN
95 saddr.sun_len = len >= sizeof saddr.sun_path
96 ? sizeof saddr.sun_path : len + 1;
99 if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0
100 || (unlink(pathname) < 0 && errno != ENOENT)
101 || (bind(sock, (struct sockaddr*)&saddr, sizeof saddr)) < 0)
104 return do_chmod(pathname, mode);
108 return mknod(pathname, mode, dev);
114 int do_rmdir(char *pathname)
116 if (dry_run) return 0;
117 RETURN_ERROR_IF_RO_OR_LO;
118 return rmdir(pathname);
121 int do_open(char *pathname, int flags, mode_t mode)
123 if (flags != O_RDONLY) {
124 RETURN_ERROR_IF(dry_run, 0);
125 RETURN_ERROR_IF_RO_OR_LO;
128 return open(pathname, flags | O_BINARY, mode);
132 int do_chmod(const char *path, mode_t mode)
135 if (dry_run) return 0;
136 RETURN_ERROR_IF_RO_OR_LO;
137 code = chmod(path, mode);
138 if (code != 0 && preserve_perms)
144 int do_rename(char *fname1, char *fname2)
146 if (dry_run) return 0;
147 RETURN_ERROR_IF_RO_OR_LO;
148 return rename(fname1, fname2);
152 void trim_trailing_slashes(char *name)
155 /* Some BSD systems cannot make a directory if the name
156 * contains a trailing slash.
157 * <http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html> */
159 /* Don't change empty string; and also we can't improve on
164 if (name[--l] != '/')
171 int do_mkdir(char *fname, mode_t mode)
173 if (dry_run) return 0;
174 RETURN_ERROR_IF_RO_OR_LO;
175 trim_trailing_slashes(fname);
176 return mkdir(fname, mode);
180 /* like mkstemp but forces permissions */
181 int do_mkstemp(char *template, mode_t perms)
183 RETURN_ERROR_IF(dry_run, 0);
184 RETURN_ERROR_IF(read_only, EROFS);
186 #if HAVE_SECURE_MKSTEMP && HAVE_FCHMOD && (!HAVE_OPEN64 || HAVE_MKSTEMP64)
188 int fd = mkstemp(template);
191 if (fchmod(fd, perms) != 0 && preserve_perms) {
192 int errno_save = errno;
198 #if HAVE_SETMODE && O_BINARY
199 setmode(fd, O_BINARY);
204 if (!mktemp(template))
206 return do_open(template, O_RDWR|O_EXCL|O_CREAT, perms);
210 int do_stat(const char *fname, STRUCT_STAT *st)
213 return stat64(fname, st);
215 return stat(fname, st);
220 int do_lstat(const char *fname, STRUCT_STAT *st)
223 return lstat64(fname, st);
225 return lstat(fname, st);
230 int do_fstat(int fd, STRUCT_STAT *st)
233 return fstat64(fd, st);
235 return fstat(fd, st);
239 OFF_T do_lseek(int fd, OFF_T offset, int whence)
243 return lseek64(fd, offset, whence);
245 return lseek(fd, offset, whence);
250 void *do_mmap(void *start, int len, int prot, int flags, int fd, OFF_T offset)
253 return mmap64(start, len, prot, flags, fd, offset);
255 return mmap(start, len, prot, flags, fd, offset);
260 char *d_name(struct dirent *di)
262 #if HAVE_BROKEN_READDIR
263 return (di->d_name - 2);