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Diffstat (limited to 'sysdeps/posix/isfdtype.c')
-rw-r--r--sysdeps/posix/isfdtype.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/posix/isfdtype.c b/sysdeps/posix/isfdtype.c
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index 0000000000..9ac38a8b9f
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+++ b/sysdeps/posix/isfdtype.c
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+/* isfdtype - Determine whether descriptor has given property.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+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. */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+
+int
+isfdtype (int fildes, int fdtype)
+{
+ struct stat st;
+ int result;
+
+ {
+ int save_error = errno;
+ result = fstat (fildes, &st);
+ errno = save_error;
+ }
+
+ return result ?: (st.st_mode & S_IFMT) == fdtype;
+}