Imported from ../bash-2.05b.tar.gz.

lib/sh/zcatfd.c

@@ -0,0 +1,68 @@
+/* Copyright (C) 2002 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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 2, or (at your option) any later
+   version.
+
+   Bash 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 Bash; see the file COPYING.  If not, write to the Free Software
+   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include <errno.h>
+
+#include <stdc.h>
+
+#if !defined (errno)
+extern int errno;
+#endif
+
+extern ssize_t zread __P((int, char *, size_t));
+extern int zwrite __P((int, char *, ssize_t));
+
+/* Dump contents of file descriptor FD to OFD.  FN is the filename for
+   error messages (not used right now). */
+int
+zcatfd (fd, ofd, fn)
+     int fd, ofd;
+     char *fn;
+{
+  ssize_t nr;
+  int rval;
+  char lbuf[128];
+
+  rval = 0;
+  while (1)
+    {
+      nr = zread (fd, lbuf, sizeof (lbuf));
+      if (nr == 0)
+	break;
+      else if (nr < 0)
+	{
+	  rval = -1;
+	  break;
+	}
+      else if (zwrite (ofd, lbuf, nr) < 0)
+	{
+	  rval = -1;
+	  break;
+	}
+    }
+
+  return rval;
+}