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 */
19 /* If the user's config.h happens to include <sys/stat.h>, let it include only
20 the system's <sys/stat.h> here, so that orig_stat doesn't recurse to
22 #define __need_system_sys_stat_h
25 /* Get the original definition of stat. It might be defined as a macro. */
26 #include <sys/types.h>
28 #undef __need_system_sys_stat_h
31 orig_stat (const char *filename, struct stat *buf)
33 return stat (filename, buf);
37 /* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
38 eliminates this include because of the preliminary #include <sys/stat.h>
49 #if REPLACE_FUNC_STAT_DIR
52 # error "Please port this replacement to your platform"
56 /* Store information about NAME into ST. Work around bugs with
57 trailing slashes. Mingw has other bugs (such as st_ino always
58 being 0 on success) which this wrapper does not work around. But
59 at least this implementation provides the ability to emulate fchdir
63 rpl_stat (char const *name, struct stat *st)
65 int result = orig_stat (name, st);
66 #if REPLACE_FUNC_STAT_FILE
67 /* Solaris 9 mistakenly succeeds when given a non-directory with a
69 if (result == 0 && !S_ISDIR (st->st_mode))
71 size_t len = strlen (name);
72 if (ISSLASH (name[len - 1]))
78 #endif /* REPLACE_FUNC_STAT_FILE */
79 #if REPLACE_FUNC_STAT_DIR
80 /* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
81 have a constant PATH_MAX. */
83 if (result == -1 && errno == ENOENT)
85 /* Due to mingw's oddities, there are some directories (like
86 c:\) where stat() only succeeds with a trailing slash, and
87 other directories (like c:\windows) where stat() only
88 succeeds without a trailing slash. But we want the two to be
89 synonymous, since chdir() manages either style. Likewise, Mingw also
90 reports ENOENT for names longer than PATH_MAX, when we want
91 ENAMETOOLONG, and for stat("file/"), when we want ENOTDIR.
92 Fortunately, mingw PATH_MAX is small enough for stack
94 char fixed_name[PATH_MAX + 1] = {0};
95 size_t len = strlen (name);
96 bool check_dir = false;
97 verify (PATH_MAX <= 4096);
102 strcpy (fixed_name, name);
103 if (ISSLASH (fixed_name[len - 1]))
106 while (len && ISSLASH (fixed_name[len - 1]))
107 fixed_name[--len] = '\0';
112 fixed_name[len++] = '/';
113 result = orig_stat (fixed_name, st);
114 if (result == 0 && check_dir && !S_ISDIR (st->st_mode))
121 #endif /* REPLACE_FUNC_STAT_DIR */