mkstemps.c (mkstemps): If open failed with errno other than EEXIST, return immediately.

	* mkstemps.c (mkstemps): If open failed with errno other than
	EEXIST, return immediately.
	* make-temp-file.c: Include errno.h.
	(make_temp_file): If mkstemps failed, print an error message
	before aborting.

From-SVN: r138429

libiberty/ChangeLog

+2008-07-31  Denys Vlasenko  <dvlasenk@redhat.com>
+
+	* mkstemps.c (mkstemps): If open failed with errno other than
+	EEXIST, return immediately.
+	* make-temp-file.c: Include errno.h.
+	(make_temp_file): If mkstemps failed, print an error message
+	before aborting.
+
 2008-07-24  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
 	* maint-tool (deps): Output config.h instead of stamp-h.

libiberty/make-temp-file.c

@@ -23,6 +23,7 @@ Boston, MA 02110-1301, USA.  */
 
 #include <stdio.h>	/* May get P_tmpdir.  */
 #include <sys/types.h>
+#include <errno.h>
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -166,11 +167,14 @@ make_temp_file (const char *suffix)
   strcpy (temp_filename + base_len + TEMP_FILE_LEN, suffix);
 
   fd = mkstemps (temp_filename, suffix_len);
-  /* If mkstemps failed, then something bad is happening.  Maybe we should
-     issue a message about a possible security attack in progress?  */
+  /* Mkstemps failed.  It may be EPERM, ENOSPC etc.  */
   if (fd == -1)
-    abort ();
-  /* Similarly if we can not close the file.  */
+    {
+      fprintf (stderr, "Cannot create temporary file in %s: %s\n",
+	       base, strerror (errno));
+      abort ();
+    }
+  /* We abort on failed close out of sheer paranoia.  */
   if (close (fd))
     abort ();
   return temp_filename;

libiberty/mkstemps.c

@@ -127,6 +127,9 @@ mkstemps (char *pattern, int suffix_len)
       if (fd >= 0)
 	/* The file does not exist.  */
 	return fd;
+      if (errno != EEXIST)
+	/* 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