Back to index

glibc  2.9
isfdtype.c
Go to the documentation of this file.
00001 /* Determine whether descriptor has given property.
00002    Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <errno.h>
00021 #include <sys/stat.h>
00022 #include <sys/socket.h>
00023 #include <sys/types.h>
00024 
00025 int
00026 isfdtype (int fildes, int fdtype)
00027 {
00028   struct stat64 st;
00029   int result;
00030 
00031   {
00032     int save_error = errno;
00033     result = fstat64 (fildes, &st);
00034     __set_errno (save_error);
00035   }
00036 
00037   return result ?: (st.st_mode & S_IFMT) == (mode_t) fdtype;
00038 }