| | 1 | /* |
| | 2 | * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com> |
| | 3 | * All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without |
| | 6 | * modification, are permitted provided that the following conditions |
| | 7 | * are met: |
| | 8 | * 1. Redistributions of source code must retain the above copyright |
| | 9 | * notice, this list of conditions and the following disclaimer. |
| | 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 11 | * notice, this list of conditions and the following disclaimer in the |
| | 12 | * documentation and/or other materials provided with the distribution. |
| | 13 | * 3. The name of the author may not be used to endorse or promote products |
| | 14 | * derived from this software without specific prior written permission. |
| | 15 | * |
| | 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| | 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| | 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| | 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| | 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| | 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| | 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| | 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| | 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| | 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| | 26 | */ |
| | 27 | |
| | 28 | #include <sys/cdefs.h> |
| | 29 | __FBSDID("$FreeBSD: src/lib/libc/gen/ftok.c,v 1.7 2004/06/01 06:53:07 tjr Exp $"); |
| | 30 | |
| | 31 | #include <sys/types.h> |
| | 32 | #include <sys/stat.h> |
| | 33 | #include <sys/ipc.h> |
| | 34 | |
| | 35 | key_t |
| | 36 | ftok(path, id) |
| | 37 | const char *path; |
| | 38 | int id; |
| | 39 | { |
| | 40 | struct stat st; |
| | 41 | |
| | 42 | if (stat(path, &st) < 0) |
| | 43 | return (key_t)-1; |
| | 44 | |
| | 45 | return (key_t) (id << 24 | (st.st_dev & 0xff) << 16 | (st.st_ino & 0xffff)); |
| | 46 | } |
projects / apple / libc.git / blame_incremental