diff options
Diffstat (limited to 'sysdeps/posix/isfdtype.c')
-rw-r--r-- | sysdeps/posix/isfdtype.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/posix/isfdtype.c b/sysdeps/posix/isfdtype.c new file mode 100644 index 0000000000..9ac38a8b9f --- /dev/null +++ b/sysdeps/posix/isfdtype.c @@ -0,0 +1,37 @@ +/* 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; +} |