Index: bison/src/bison/2.4.1/bison-2.4.1-src/lib/pipe-safer.c |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/lib/pipe-safer.c (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/lib/pipe-safer.c (revision 0) |
@@ -0,0 +1,57 @@ |
+/* Invoke pipe, but avoid some glitches. |
+ Copyright (C) 2005, 2006 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 |
+ the Free Software Foundation; either version 3 of the License, or |
+ (at your option) any later version. |
+ |
+ This program is distributed in the hope that it will be useful, |
+ but WITHOUT ANY WARRANTY; without even the implied warranty of |
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
+ GNU General Public License for more details. |
+ |
+ You should have received a copy of the GNU General Public License |
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
+ |
+/* Written by Jim Meyering. */ |
+ |
+#include <config.h> |
+ |
+#include "unistd-safer.h" |
+#include "subpipe.h" |
+ |
+#include <unistd.h> |
+#include <errno.h> |
+ |
+/* Like pipe, but ensure that neither of the file descriptors is |
+ STDIN_FILENO, STDOUT_FILENO, or STDERR_FILENO. Fail with ENOSYS on |
+ platforms that lack pipe. */ |
+ |
+int |
+pipe_safer (int fd[2]) |
+{ |
+#if HAVE_PIPE |
+ if (pipe (fd) == 0) |
+ { |
+ int i; |
+ for (i = 0; i < 2; i++) |
+ { |
+ fd[i] = fd_safer (fd[i]); |
+ if (fd[i] < 0) |
+ { |
+ int e = errno; |
+ close (fd[1 - i]); |
+ errno = e; |
+ return -1; |
+ } |
+ } |
+ |
+ return 0; |
+ } |
+#else |
+ errno = ENOSYS; |
+#endif |
+ |
+ return -1; |
+} |
Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\lib\pipe-safer.c |
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Added: svn:eol-style |
+ LF |