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.
32 extern int preserve_perms;
34 #define RETURN_ERROR_IF(x,e) \
42 #define RETURN_ERROR_IF_RO_OR_LO RETURN_ERROR_IF(read_only || list_only, EROFS)
44 int do_unlink(char *fname)
46 if (dry_run) return 0;
47 RETURN_ERROR_IF_RO_OR_LO;
51 int do_symlink(char *fname1, char *fname2)
53 if (dry_run) return 0;
54 RETURN_ERROR_IF_RO_OR_LO;
55 return symlink(fname1, fname2);
59 int do_link(char *fname1, char *fname2)
61 if (dry_run) return 0;
62 RETURN_ERROR_IF_RO_OR_LO;
63 return link(fname1, fname2);
67 int do_lchown(const char *path, uid_t owner, gid_t group)
69 if (dry_run) return 0;
70 RETURN_ERROR_IF_RO_OR_LO;
71 return lchown(path, owner, group);
75 int do_mknod(char *pathname, mode_t mode, dev_t dev)
77 if (dry_run) return 0;
78 RETURN_ERROR_IF_RO_OR_LO;
79 return mknod(pathname, mode, dev);
83 int do_rmdir(char *pathname)
85 if (dry_run) return 0;
86 RETURN_ERROR_IF_RO_OR_LO;
87 return rmdir(pathname);
90 int do_open(char *pathname, int flags, mode_t mode)
92 if (flags != O_RDONLY) {
93 RETURN_ERROR_IF(dry_run, ENOMSG);
94 RETURN_ERROR_IF_RO_OR_LO;
97 return open(pathname, flags | O_BINARY, mode);
101 int do_chmod(const char *path, mode_t mode)
104 if (dry_run) return 0;
105 RETURN_ERROR_IF_RO_OR_LO;
106 code = chmod(path, mode);
107 if (code != 0 && preserve_perms)
113 int do_rename(char *fname1, char *fname2)
115 if (dry_run) return 0;
116 RETURN_ERROR_IF_RO_OR_LO;
117 return rename(fname1, fname2);
121 void trim_trailing_slashes(char *name)
124 /* Some BSD systems cannot make a directory if the name
125 * contains a trailing slash.
126 * <http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html> */
128 /* Don't change empty string; and also we can't improve on
133 if (name[--l] != '/')
140 int do_mkdir(char *fname, mode_t mode)
142 if (dry_run) return 0;
143 RETURN_ERROR_IF_RO_OR_LO;
144 trim_trailing_slashes(fname);
145 return mkdir(fname, mode);
149 /* like mkstemp but forces permissions */
150 int do_mkstemp(char *template, mode_t perms)
152 RETURN_ERROR_IF(dry_run, ENOMSG);
153 RETURN_ERROR_IF(read_only, EROFS);
155 #if defined(HAVE_SECURE_MKSTEMP) && defined(HAVE_FCHMOD)
157 int fd = mkstemp(template);
160 if (fchmod(fd, perms) != 0 && preserve_perms) {
161 int errno_save = errno;
170 if (!mktemp(template))
172 return do_open(template, O_RDWR|O_EXCL|O_CREAT, perms);
176 int do_stat(const char *fname, STRUCT_STAT *st)
179 return stat64(fname, st);
181 return stat(fname, st);
186 int do_lstat(const char *fname, STRUCT_STAT *st)
189 return lstat64(fname, st);
191 return lstat(fname, st);
196 int do_fstat(int fd, STRUCT_STAT *st)
199 return fstat64(fd, st);
201 return fstat(fd, st);
205 OFF_T do_lseek(int fd, OFF_T offset, int whence)
209 return lseek64(fd, offset, whence);
211 return lseek(fd, offset, whence);
216 void *do_mmap(void *start, int len, int prot, int flags, int fd, OFF_T offset)
219 return mmap64(start, len, prot, flags, fd, offset);
221 return mmap(start, len, prot, flags, fd, offset);
226 char *d_name(struct dirent *di)
228 #if HAVE_BROKEN_READDIR
229 return (di->d_name - 2);