X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fglob.c;h=42cd39bd4f2dfef93254c02739a1d45dd29cf37b;hb=fc33350;hp=bb8417fa2d7adc912fbf94c707ffaef9acc9307f;hpb=c293bc46ac85a0507c1fc0210529ab16d0c3260b;p=gnulib.git

diff --git a/lib/glob.c b/lib/glob.c
index bb8417fa2..42cd39bd4 100644
--- a/lib/glob.c
+++ b/lib/glob.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2002, 2003, 2004, 2005, 2006, 2007
+/* Copyright (C) 1991-2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -32,6 +32,8 @@
 /* #define NDEBUG 1 */
 #include <assert.h>
 
+#include <stdbool.h>
+
 #include <stdio.h>		/* Needed on stupid SunOS for assert.  */
 
 #if !defined _LIBC || !defined GLOB_ONLY_P
@@ -41,7 +43,13 @@
 # define POSIX
 #endif
 
-#include <pwd.h>
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# define WINDOWS32
+#endif
+
+#ifndef WINDOWS32
+# include <pwd.h>
+#endif
 
 #include <errno.h>
 #ifndef __set_errno
@@ -145,11 +153,6 @@
 
 #include <fnmatch.h>
 
-#ifndef _LIBC
-# include "dirfd.h"
-# include "openat.h"
-#endif
-
 #ifdef _SC_GETPW_R_SIZE_MAX
 # define GETPW_R_SIZE_MAX()	sysconf (_SC_GETPW_R_SIZE_MAX)
 #else
@@ -183,7 +186,10 @@ static const char *next_brace_sub (const char *begin, int flags) __THROW;
 
 #ifndef _LIBC
 /* The results of opendir() in this file are not used with dirfd and fchdir,
-   therefore save some unnecessary work in fchdir.c.  */
+   and we do not leak fds to any single-threaded code that could use stdio,
+   therefore save some unnecessary recursion in fchdir.c and opendir_safer.c.
+   FIXME - if the kernel ever adds support for multi-thread safety for
+   avoiding standard fds, then we should use opendir_safer.  */
 # undef opendir
 # undef closedir
 
@@ -564,8 +570,26 @@ glob (pattern, flags, errfunc, pglob)
 	    home_dir = "SYS:";
 # else
 #  ifdef WINDOWS32
+	  /* Windows NT defines HOMEDRIVE and HOMEPATH.  But give preference
+	     to HOME, because the user can change HOME.  */
 	  if (home_dir == NULL || home_dir[0] == '\0')
-            home_dir = "c:/users/default"; /* poor default */
+	    {
+	      const char *home_drive = getenv ("HOMEDRIVE");
+	      const char *home_path = getenv ("HOMEPATH");
+
+	      if (home_drive != NULL && home_path != NULL)
+		{
+		  size_t home_drive_len = strlen (home_drive);
+		  size_t home_path_len = strlen (home_path);
+		  char *mem = alloca (home_drive_len + home_path_len + 1);
+
+		  memcpy (mem, home_drive, home_drive_len);
+		  memcpy (mem + home_drive_len, home_path, home_path_len + 1);
+		  home_dir = mem;
+		}
+	      else
+		home_dir = "c:/users/default"; /* poor default */
+	    }
 #  else
 	  if (home_dir == NULL || home_dir[0] == '\0')
 	    {
@@ -1218,13 +1242,17 @@ weak_alias (__glob_pattern_p, glob_pattern_p)
 #endif /* !GLOB_ONLY_P */
 
 
+#if !defined _LIBC || !defined GLOB_ONLY_P
 /* We put this in a separate function mainly to allow the memory
    allocated with alloca to be recycled.  */
-#if !defined _LIBC || !defined GLOB_ONLY_P
 static int
 __attribute_noinline__
 link_exists2_p (const char *dir, size_t dirlen, const char *fname,
-		glob_t *pglob)
+		glob_t *pglob
+# if !defined _LIBC && !HAVE_FSTATAT
+		, int flags
+# endif
+		)
 {
   size_t fnamelen = strlen (fname);
   char *fullname = __alloca (dirlen + 1 + fnamelen + 1);
@@ -1233,6 +1261,13 @@ link_exists2_p (const char *dir, size_t dirlen, const char *fname,
   mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1),
 	   fname, fnamelen + 1);
 
+# if !defined _LIBC && !HAVE_FSTATAT
+  if (__builtin_expect ((flags & GLOB_ALTDIRFUNC) == 0, 1))
+    {
+      struct_stat64 st64;
+      return __stat64 (fullname, &st64) == 0;
+    }
+# endif
   return (*pglob->gl_stat) (fullname, &st) == 0;
 }
 
@@ -1241,6 +1276,7 @@ static int
 link_exists_p (int dfd, const char *dir, size_t dirlen, const char *fname,
 	       glob_t *pglob, int flags)
 {
+# if defined _LIBC || HAVE_FSTATAT
   if (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0))
     return link_exists2_p (dir, dirlen, fname, pglob);
   else
@@ -1248,6 +1284,9 @@ link_exists_p (int dfd, const char *dir, size_t dirlen, const char *fname,
       struct_stat64 st64;
       return __fxstatat64 (_STAT_VER, dfd, fname, &st64, 0) == 0;
     }
+# else
+  return link_exists2_p (dir, dirlen, fname, pglob, flags);
+# endif
 }
 #endif