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/* 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,
see <http://www.gnu.org/licenses/>. */
#include <sys/ipc.h>
#include <sys/stat.h>
#ifdef __UCLIBC_HAS_LFS__
# include <_lfs_64.h>
#else
# define stat64 stat
#endif
key_t ftok (const char *pathname, int proj_id)
{
struct stat64 st;
key_t key;
if (stat64(pathname, &st) < 0)
return (key_t) -1;
key = ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16)
| ((proj_id & 0xff) << 24));
return key;
}
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