|
Packit |
eba2e2 |
/* Work around platform bugs in stat.
|
|
Packit |
eba2e2 |
Copyright (C) 2009-2014 Free Software Foundation, Inc.
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
This program is free software: you can redistribute it and/or modify
|
|
Packit |
eba2e2 |
it under the terms of the GNU General Public License as published by
|
|
Packit |
eba2e2 |
the Free Software Foundation; either version 3 of the License, or
|
|
Packit |
eba2e2 |
(at your option) any later version.
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
This program is distributed in the hope that it will be useful,
|
|
Packit |
eba2e2 |
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
eba2e2 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Packit |
eba2e2 |
GNU General Public License for more details.
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
You should have received a copy of the GNU General Public License
|
|
Packit |
eba2e2 |
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
/* written by Eric Blake */
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
/* If the user's config.h happens to include <sys/stat.h>, let it include only
|
|
Packit |
eba2e2 |
the system's <sys/stat.h> here, so that orig_stat doesn't recurse to
|
|
Packit |
eba2e2 |
rpl_stat. */
|
|
Packit |
eba2e2 |
#define __need_system_sys_stat_h
|
|
Packit |
eba2e2 |
#include <config.h>
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
/* Get the original definition of stat. It might be defined as a macro. */
|
|
Packit |
eba2e2 |
#include <sys/types.h>
|
|
Packit |
eba2e2 |
#include <sys/stat.h>
|
|
Packit |
eba2e2 |
#undef __need_system_sys_stat_h
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
|
|
Packit |
eba2e2 |
# if _GL_WINDOWS_64_BIT_ST_SIZE
|
|
Packit |
eba2e2 |
# undef stat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */
|
|
Packit |
eba2e2 |
# define stat _stati64
|
|
Packit |
eba2e2 |
# define REPLACE_FUNC_STAT_DIR 1
|
|
Packit |
eba2e2 |
# undef REPLACE_FUNC_STAT_FILE
|
|
Packit |
eba2e2 |
# elif REPLACE_FUNC_STAT_FILE
|
|
Packit |
eba2e2 |
/* mingw64 has a broken stat() function, based on _stat(), in libmingwex.a.
|
|
Packit |
eba2e2 |
Bypass it. */
|
|
Packit |
eba2e2 |
# define stat _stat
|
|
Packit |
eba2e2 |
# define REPLACE_FUNC_STAT_DIR 1
|
|
Packit |
eba2e2 |
# undef REPLACE_FUNC_STAT_FILE
|
|
Packit |
eba2e2 |
# endif
|
|
Packit |
eba2e2 |
#endif
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
static int
|
|
Packit |
eba2e2 |
orig_stat (const char *filename, struct stat *buf)
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
return stat (filename, buf);
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
/* Specification. */
|
|
Packit |
eba2e2 |
/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
|
|
Packit |
eba2e2 |
eliminates this include because of the preliminary #include <sys/stat.h>
|
|
Packit |
eba2e2 |
above. */
|
|
Packit |
eba2e2 |
#include "sys/stat.h"
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
#include <errno.h>
|
|
Packit |
eba2e2 |
#include <limits.h>
|
|
Packit |
eba2e2 |
#include <stdbool.h>
|
|
Packit |
eba2e2 |
#include <string.h>
|
|
Packit |
eba2e2 |
#include "dosname.h"
|
|
Packit |
eba2e2 |
#include "verify.h"
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
#if REPLACE_FUNC_STAT_DIR
|
|
Packit |
eba2e2 |
# include "pathmax.h"
|
|
Packit |
eba2e2 |
/* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
|
|
Packit |
eba2e2 |
have a constant PATH_MAX. */
|
|
Packit |
eba2e2 |
# ifndef PATH_MAX
|
|
Packit |
eba2e2 |
# error "Please port this replacement to your platform"
|
|
Packit |
eba2e2 |
# endif
|
|
Packit |
eba2e2 |
#endif
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
/* Store information about NAME into ST. Work around bugs with
|
|
Packit |
eba2e2 |
trailing slashes. Mingw has other bugs (such as st_ino always
|
|
Packit |
eba2e2 |
being 0 on success) which this wrapper does not work around. But
|
|
Packit |
eba2e2 |
at least this implementation provides the ability to emulate fchdir
|
|
Packit |
eba2e2 |
correctly. */
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
int
|
|
Packit |
eba2e2 |
rpl_stat (char const *name, struct stat *st)
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
int result = orig_stat (name, st);
|
|
Packit |
eba2e2 |
#if REPLACE_FUNC_STAT_FILE
|
|
Packit |
eba2e2 |
/* Solaris 9 mistakenly succeeds when given a non-directory with a
|
|
Packit |
eba2e2 |
trailing slash. */
|
|
Packit |
eba2e2 |
if (result == 0 && !S_ISDIR (st->st_mode))
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
size_t len = strlen (name);
|
|
Packit |
eba2e2 |
if (ISSLASH (name[len - 1]))
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
errno = ENOTDIR;
|
|
Packit |
eba2e2 |
return -1;
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
#endif /* REPLACE_FUNC_STAT_FILE */
|
|
Packit |
eba2e2 |
#if REPLACE_FUNC_STAT_DIR
|
|
Packit |
eba2e2 |
|
|
Packit |
eba2e2 |
if (result == -1 && errno == ENOENT)
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
/* Due to mingw's oddities, there are some directories (like
|
|
Packit |
eba2e2 |
c:\) where stat() only succeeds with a trailing slash, and
|
|
Packit |
eba2e2 |
other directories (like c:\windows) where stat() only
|
|
Packit |
eba2e2 |
succeeds without a trailing slash. But we want the two to be
|
|
Packit |
eba2e2 |
synonymous, since chdir() manages either style. Likewise, Mingw also
|
|
Packit |
eba2e2 |
reports ENOENT for names longer than PATH_MAX, when we want
|
|
Packit |
eba2e2 |
ENAMETOOLONG, and for stat("file/"), when we want ENOTDIR.
|
|
Packit |
eba2e2 |
Fortunately, mingw PATH_MAX is small enough for stack
|
|
Packit |
eba2e2 |
allocation. */
|
|
Packit |
eba2e2 |
char fixed_name[PATH_MAX + 1] = {0};
|
|
Packit |
eba2e2 |
size_t len = strlen (name);
|
|
Packit |
eba2e2 |
bool check_dir = false;
|
|
Packit |
eba2e2 |
verify (PATH_MAX <= 4096);
|
|
Packit |
eba2e2 |
if (PATH_MAX <= len)
|
|
Packit |
eba2e2 |
errno = ENAMETOOLONG;
|
|
Packit |
eba2e2 |
else if (len)
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
strcpy (fixed_name, name);
|
|
Packit |
eba2e2 |
if (ISSLASH (fixed_name[len - 1]))
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
check_dir = true;
|
|
Packit |
eba2e2 |
while (len && ISSLASH (fixed_name[len - 1]))
|
|
Packit |
eba2e2 |
fixed_name[--len] = '\0';
|
|
Packit |
eba2e2 |
if (!len)
|
|
Packit |
eba2e2 |
fixed_name[0] = '/';
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
else
|
|
Packit |
eba2e2 |
fixed_name[len++] = '/';
|
|
Packit |
eba2e2 |
result = orig_stat (fixed_name, st);
|
|
Packit |
eba2e2 |
if (result == 0 && check_dir && !S_ISDIR (st->st_mode))
|
|
Packit |
eba2e2 |
{
|
|
Packit |
eba2e2 |
result = -1;
|
|
Packit |
eba2e2 |
errno = ENOTDIR;
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
}
|
|
Packit |
eba2e2 |
#endif /* REPLACE_FUNC_STAT_DIR */
|
|
Packit |
eba2e2 |
return result;
|
|
Packit |
eba2e2 |
}
|