/* 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; }