PR debug/44028

[pf3gnuchains/gcc-fork.git] / libiberty / mkstemps.c

diff --git a/libiberty/mkstemps.c b/libiberty/mkstemps.c
index 56b0bae..a0e68a7 100644 (file)
--- a/libiberty/mkstemps.c
+++ b/libiberty/mkstemps.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1996, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1996, 1998, 2004 Free Software Foundation, Inc.
    This file is derived from mkstemp.c from the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -13,8 +13,8 @@
 
    You should have received a copy of the GNU Library General Public
    License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -49,20 +49,24 @@ typedef unsigned long gcc_uint64_t;
 #define TMP_MAX 16384
 #endif
 
+#ifndef O_BINARY
+# define O_BINARY 0
+#endif
+
 /*
 
-@deftypefn Replacement int mkstemps (char *@var{template}, int @var{suffix_len})
+@deftypefn Replacement int mkstemps (char *@var{pattern}, int @var{suffix_len})
 
-Generate a unique temporary file name from @var{template}.
-@var{template} has the form:
+Generate a unique temporary file name from @var{pattern}.
+@var{pattern} has the form:
 
 @example
-   <path>/ccXXXXXX<suffix>
+   @var{path}/ccXXXXXX@var{suffix}
 @end example
 
-@var{suffix_len} tells us how long <suffix> is (it can be zero
-length).  The last six characters of @var{template} before <suffix>
-must be @code{XXXXXX}; they are replaced with a string that makes the
+@var{suffix_len} tells us how long @var{suffix} is (it can be zero
+length).  The last six characters of @var{pattern} before @var{suffix}
+must be @samp{XXXXXX}; they are replaced with a string that makes the
 filename unique.  Returns a file descriptor open on the file for
 reading and writing.
 
@@ -71,9 +75,7 @@ reading and writing.
 */
 
 int
-mkstemps (template, suffix_len)
-     char *template;
-     int suffix_len;
+mkstemps (char *pattern, int suffix_len)
 {
   static const char letters[]
     = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
@@ -85,15 +87,15 @@ mkstemps (template, suffix_len)
   size_t len;
   int count;
 
-  len = strlen (template);
+  len = strlen (pattern);
 
   if ((int) len < 6 + suffix_len
-      || strncmp (&template[len - 6 - suffix_len], "XXXXXX", 6))
+      || strncmp (&pattern[len - 6 - suffix_len], "XXXXXX", 6))
     {
       return -1;
     }
 
-  XXXXXX = &template[len - 6 - suffix_len];
+  XXXXXX = &pattern[len - 6 - suffix_len];
 
 #ifdef HAVE_GETTIMEOFDAY
   /* Get some more or less random data.  */
@@ -121,10 +123,17 @@ mkstemps (template, suffix_len)
       v /= 62;
       XXXXXX[5] = letters[v % 62];
 
-      fd = open (template, O_RDWR|O_CREAT|O_EXCL, 0600);
+      fd = open (pattern, O_BINARY|O_RDWR|O_CREAT|O_EXCL, 0600);
       if (fd >= 0)
        /* The file does not exist.  */
        return fd;
+      if (errno != EEXIST
+#ifdef EISDIR
+         && errno != EISDIR
+#endif
+        )
+       /* Fatal error (EPERM, ENOSPC etc).  Doesn't make sense to loop.  */
+       break;
 
       /* This is a random value.  It is only necessary that the next
         TMP_MAX values generated by adding 7777 to VALUE are different
@@ -133,6 +142,6 @@ mkstemps (template, suffix_len)
     }
 
   /* We return the null string if we can't find a unique file name.  */
-  template[0] = '\0';
+  pattern[0] = '\0';
   return -1;
 }