1 /* Work around platform bugs in stat.
2 Copyright (C) 2009-2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
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, see <http://www.gnu.org/licenses/>. */
17 /* written by Eric Blake */
21 /* Get the original definition of stat. It might be defined as a macro. */
22 #define __need_system_sys_stat_h
23 #include <sys/types.h>
25 #undef __need_system_sys_stat_h
28 orig_stat (const char *filename, struct stat *buf)
30 return stat (filename, buf);
43 /* Store information about NAME into ST. Work around bugs with
44 trailing slashes. Mingw has other bugs (such as st_ino always
45 being 0 on success) which this wrapper does not work around. But
46 at least this implementation provides the ability to emulate fchdir
50 rpl_stat (char const *name, struct stat *st)
52 int result = orig_stat (name, st);
53 #if REPLACE_FUNC_STAT_FILE
54 /* Solaris 9 mistakenly succeeds when given a non-directory with a
56 if (result == 0 && !S_ISDIR (st->st_mode))
58 size_t len = strlen (name);
59 if (ISSLASH (name[len - 1]))
65 #endif /* REPLACE_FUNC_STAT_FILE */
66 #if REPLACE_FUNC_STAT_DIR
67 /* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
68 have a constant PATH_MAX. */
70 # error "Please port this replacement to your platform"
73 if (result == -1 && errno == ENOENT)
75 /* Due to mingw's oddities, there are some directories (like
76 c:\) where stat() only succeeds with a trailing slash, and
77 other directories (like c:\windows) where stat() only
78 succeeds without a trailing slash. But we want the two to be
79 synonymous, since chdir() manages either style. Likewise, Mingw also
80 reports ENOENT for names longer than PATH_MAX, when we want
81 ENAMETOOLONG, and for stat("file/"), when we want ENOTDIR.
82 Fortunately, mingw PATH_MAX is small enough for stack
84 char fixed_name[PATH_MAX + 1] = {0};
85 size_t len = strlen (name);
86 bool check_dir = false;
87 verify (PATH_MAX <= 4096);
92 strcpy (fixed_name, name);
93 if (ISSLASH (fixed_name[len - 1]))
96 while (len && ISSLASH (fixed_name[len - 1]))
97 fixed_name[--len] = '\0';
102 fixed_name[len++] = '/';
103 result = orig_stat (fixed_name, st);
104 if (result == 0 && check_dir && !S_ISDIR (st->st_mode))
111 #endif /* REPLACE_FUNC_STAT_DIR */