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NetBSD/lib/libc/gen/ftok.c

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Delint. Remove trailing ; from uses of __weak_alias(). The macro inserts this if needed.
2000-01-23 01:19:07 +03:00
/* $NetBSD: ftok.c,v 1.9 2000/01/22 22:19:10 mycroft Exp $ */
merge with Lite, keeping local changes. Also use new Id format.
1995-02-27 06:42:42 +03:00
Ftok() routine, needed by most programs that use SysV IPC.
1994-06-26 20:24:55 +04:00
/*
* Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
Fix RCSID's
1997-07-13 23:45:36 +04:00
#include <sys/cdefs.h>
Moved RCS ID into static variable rcsid
1994-06-26 20:27:34 +04:00
#if defined(LIBC_SCCS) && !defined(lint)
Delint. Remove trailing ; from uses of __weak_alias(). The macro inserts this if needed.
2000-01-23 01:19:07 +03:00
__RCSID("$NetBSD: ftok.c,v 1.9 2000/01/22 22:19:10 mycroft Exp $");
Moved RCS ID into static variable rcsid
1994-06-26 20:27:34 +04:00
#endif /* LIBC_SCCS and not lint */
If port provides __weak_alias(), provide an Standard C and POSIX pure identifier namespace by renaming non standard functions and variables such that they have a leading underscore. The library will use those names internally. Weak aliases are used to provide the original names to the API. This is only the first part of this change. It is most of the functions which are implemented in C for all NetBSD ports. Subsequent changes are to add the same support to the remaining C files, to assembly files, and to the automagically generated assembly source used for system calls. When all of the above is done, ports with weak alias support should add a definition for __weak_alias to <sys/cdefs.h>.
1997-07-21 18:06:24 +04:00
#include "namespace.h"
Ftok() routine, needed by most programs that use SysV IPC.
1994-06-26 20:24:55 +04:00
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ipc.h>
* use _DIAGASSERT() to check pointer arguments against NULL and file descriptors against -1 (as appropriate). * add actual checks which to detect stuff that would trigger_DIAGASSERT(), and attempt to return a sane error condition. * knf some code * remove some `register' decls. the first two items result in the addition of code similar to the following in various functions: _DIAGASSERT(path != NULL) #ifdef _DIAGNOSTIC if (path == NULL) { errno = EFAULT; return (-1); } #endif
1999-09-16 15:44:54 +04:00
#include <assert.h>
#include <errno.h>
If port provides __weak_alias(), provide an Standard C and POSIX pure identifier namespace by renaming non standard functions and variables such that they have a leading underscore. The library will use those names internally. Weak aliases are used to provide the original names to the API. This is only the first part of this change. It is most of the functions which are implemented in C for all NetBSD ports. Subsequent changes are to add the same support to the remaining C files, to assembly files, and to the automagically generated assembly source used for system calls. When all of the above is done, ports with weak alias support should add a definition for __weak_alias to <sys/cdefs.h>.
1997-07-21 18:06:24 +04:00
#ifdef __weak_alias
Delint. Remove trailing ; from uses of __weak_alias(). The macro inserts this if needed.
2000-01-23 01:19:07 +03:00
__weak_alias(ftok,_ftok)
If port provides __weak_alias(), provide an Standard C and POSIX pure identifier namespace by renaming non standard functions and variables such that they have a leading underscore. The library will use those names internally. Weak aliases are used to provide the original names to the API. This is only the first part of this change. It is most of the functions which are implemented in C for all NetBSD ports. Subsequent changes are to add the same support to the remaining C files, to assembly files, and to the automagically generated assembly source used for system calls. When all of the above is done, ports with weak alias support should add a definition for __weak_alias to <sys/cdefs.h>.
1997-07-21 18:06:24 +04:00
#endif
Ftok() routine, needed by most programs that use SysV IPC.
1994-06-26 20:24:55 +04:00
key_t
ftok(path, id)
const char *path;
Change the signature of ftok from (const char *, char) to (const char *, int) Document that only the 8 least significant bits are used in the key generation and that the return value is (key_t)-1 [this is to fix K&R vs. ansi compilation and lint warnings]
1998-11-12 19:15:17 +03:00
int id;
Ftok() routine, needed by most programs that use SysV IPC.
1994-06-26 20:24:55 +04:00
{
struct stat st;
* use _DIAGASSERT() to check pointer arguments against NULL and file descriptors against -1 (as appropriate). * add actual checks which to detect stuff that would trigger_DIAGASSERT(), and attempt to return a sane error condition. * knf some code * remove some `register' decls. the first two items result in the addition of code similar to the following in various functions: _DIAGASSERT(path != NULL) #ifdef _DIAGNOSTIC if (path == NULL) { errno = EFAULT; return (-1); } #endif
1999-09-16 15:44:54 +04:00
_DIAGASSERT(path != NULL);
Ftok() routine, needed by most programs that use SysV IPC.
1994-06-26 20:24:55 +04:00
if (stat(path, &st) < 0)
return (key_t)-1;
merge with Lite, keeping local changes. Also use new Id format.
1995-02-27 06:42:42 +03:00
return (key_t)
(id << 24 | (st.st_dev & 0xff) << 16 | (st.st_ino & 0xffff));
Ftok() routine, needed by most programs that use SysV IPC.
1994-06-26 20:24:55 +04:00
}