/* Work around platform bugs in stat.
- Copyright (C) 2009 Free Software Foundation, Inc.
+ Copyright (C) 2009-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
/* written by Eric Blake */
+/* If the user's config.h happens to include <sys/stat.h>, let it include only
+ the system's <sys/stat.h> here, so that orig_stat doesn't recurse to
+ rpl_stat. */
+#define __need_system_sys_stat_h
#include <config.h>
+/* Get the original definition of stat. It might be defined as a macro. */
+#include <sys/types.h>
#include <sys/stat.h>
+#undef __need_system_sys_stat_h
+
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# if _GL_WINDOWS_64_BIT_ST_SIZE
+# undef stat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */
+# define stat _stati64
+# define REPLACE_FUNC_STAT_DIR 1
+# undef REPLACE_FUNC_STAT_FILE
+# elif REPLACE_FUNC_STAT_FILE
+/* mingw64 has a broken stat() function, based on _stat(), in libmingwex.a.
+ Bypass it. */
+# define stat _stat
+# define REPLACE_FUNC_STAT_DIR 1
+# undef REPLACE_FUNC_STAT_FILE
+# endif
+#endif
+
+static int
+orig_stat (const char *filename, struct stat *buf)
+{
+ return stat (filename, buf);
+}
+
+/* Specification. */
+/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
+ eliminates this include because of the preliminary #include <sys/stat.h>
+ above. */
+#include "sys/stat.h"
#include <errno.h>
#include <limits.h>
#include <stdbool.h>
#include <string.h>
+#include "dosname.h"
+#include "verify.h"
-#undef stat
+#if REPLACE_FUNC_STAT_DIR
+# include "pathmax.h"
+ /* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
+ have a constant PATH_MAX. */
+# ifndef PATH_MAX
+# error "Please port this replacement to your platform"
+# endif
+#endif
-/* For now, mingw is the only known platform where stat(".") and
- stat("./") give different results. Mingw stat has other bugs (such
- as st_ino always being 0 on success) which this wrapper does not
- work around. But at least this implementation provides the ability
- to emulate fchdir correctly. */
+/* Store information about NAME into ST. Work around bugs with
+ trailing slashes. Mingw has other bugs (such as st_ino always
+ being 0 on success) which this wrapper does not work around. But
+ at least this implementation provides the ability to emulate fchdir
+ correctly. */
int
rpl_stat (char const *name, struct stat *st)
{
- int result = stat (name, st);
+ int result = orig_stat (name, st);
+#if REPLACE_FUNC_STAT_FILE
+ /* Solaris 9 mistakenly succeeds when given a non-directory with a
+ trailing slash. */
+ if (result == 0 && !S_ISDIR (st->st_mode))
+ {
+ size_t len = strlen (name);
+ if (ISSLASH (name[len - 1]))
+ {
+ errno = ENOTDIR;
+ return -1;
+ }
+ }
+#endif /* REPLACE_FUNC_STAT_FILE */
+#if REPLACE_FUNC_STAT_DIR
+
if (result == -1 && errno == ENOENT)
{
/* Due to mingw's oddities, there are some directories (like
char fixed_name[PATH_MAX + 1] = {0};
size_t len = strlen (name);
bool check_dir = false;
+ verify (PATH_MAX <= 4096);
if (PATH_MAX <= len)
errno = ENAMETOOLONG;
else if (len)
}
else
fixed_name[len++] = '/';
- result = stat (fixed_name, st);
+ result = orig_stat (fixed_name, st);
if (result == 0 && check_dir && !S_ISDIR (st->st_mode))
{
result = -1;
}
}
}
+#endif /* REPLACE_FUNC_STAT_DIR */
return result;
}