glibc/sysvipc/ftok.c
Ulrich Drepper 550be6cdb0 Update.
1998-12-13  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/posix/tempname.c: Use __xstat instead of __stat.
	* sysdeps/unix/grantpt.c: Likewise.
	* sysdeps/unix/sysv/linux/ptsname.c: Likewise.
	* sysvipc/ftok.c: Likewise.
	Patch by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>.
1998-12-13 14:52:55 +00:00

39 lines
1.3 KiB
C

/* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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 <sys/ipc.h>
#include <sys/stat.h>
key_t
ftok (pathname, proj_id)
const char *pathname;
int proj_id;
{
struct stat st;
key_t key;
if (__xstat (_STAT_VER, pathname, &st) < 0)
return (key_t) -1;
key = ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16)
| ((proj_id & 0xff) << 24));
return key;
}