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authorLi Jinjing <jinjingx.li@intel.com>2014-10-26 22:28:15 +0800
committerLi Jinjing <jinjingx.li@intel.com>2014-10-26 22:28:15 +0800
commit931b01b091932a1f796c23379ea32abb68bd5895 (patch)
tree3aa9e1125da84f7e3bd764bbff577c42a766508b /lib/stat.c
parent7be93f2d05131d061bd4790ae33c8d50f50010d7 (diff)
downloadm4-931b01b091932a1f796c23379ea32abb68bd5895.tar.gz
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Imported Upstream version 1.4.17upstream/1.4.17sandbox/jinjingx/upstream
Diffstat (limited to 'lib/stat.c')
-rw-r--r--lib/stat.c41
1 files changed, 37 insertions, 4 deletions
diff --git a/lib/stat.c b/lib/stat.c
index cbc9100..f888130 100644
--- a/lib/stat.c
+++ b/lib/stat.c
@@ -1,5 +1,5 @@
/* Work around platform bugs in stat.
- Copyright (C) 2009-2011 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
@@ -16,28 +16,59 @@
/* 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. */
-#define __need_system_sys_stat_h
#include <sys/types.h>
#include <sys/stat.h>
#undef __need_system_sys_stat_h
-static inline int
+#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. */
-#include <sys/stat.h>
+/* 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"
+
+#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
/* Store information about NAME into ST. Work around bugs with
trailing slashes. Mingw has other bugs (such as st_ino always
@@ -63,6 +94,7 @@ rpl_stat (char const *name, struct stat *st)
}
#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
@@ -77,6 +109,7 @@ rpl_stat (char const *name, struct stat *st)
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)