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38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
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/* Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <sys/ipc.h>
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#include <sys/stat.h>
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key_t
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ftok (pathname, proj_id)
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char *pathname;
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char proj_id;
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{
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struct stat st;
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key_t key;
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if (__stat (pathname, &st) < 0)
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return (key_t) -1;
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key = (st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | (id << 24);
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return key;
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}
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