utmpx-darwin.h   [plain text]

/*
 * Copyright (c) 2005, 2009 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 2004 Apple Computer, Inc.  All Rights
 * Reserved.  This file contains Original Code and/or Modifications of
 * Original Code as defined in and that are subject to the Apple Public
 * Source License Version 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource and read it before using
 * this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License."
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>

#ifdef UTMP_COMPAT
#define UTMP_COMPAT_UTMP0	0x01
#define UTMP_COMPAT_UTMP1	0x02
#define UTMP_COMPAT_WTMP	0x04
#define UTMP_COMPAT_LASTLOG	0x08
#endif /* UTMP_COMPAT */

#define LASTLOG_FACILITY	"com.apple.system.lastlog"
#define UTMPX_FACILITY		"com.apple.system.utmpx"

#define	UTMPX_LOCK(x)	pthread_mutex_lock(&(x)->utmpx_mutex)
#define	UTMPX_UNLOCK(x)	pthread_mutex_unlock(&(x)->utmpx_mutex)
#define UTMPX_MAGIC	8
#define __UTX_MAGIC__	{ 'u', 't', 'x', 0, 'v', 1, 0, 0 }

#define TEST_UTMPX_T(x,y)	{ \
					if (!(y)) \
						LIBC_ABORT("%s: NULL utmpx_t", (x)); \
					if (memcmp((y)->magic, __utx_magic__, UTMPX_MAGIC) != 0) \
						LIBC_ABORT("%s: magic mismatch", (x)); \
				}

struct _utmpx {
	char magic[UTMPX_MAGIC];
	struct utmpx ut;
	pthread_mutex_t utmpx_mutex;
	char *utfile;
	FILE *fp;
	unsigned int utfile_system :1; /* are we using _PATH_UTMPX? */
	unsigned int readonly      :1;
};
extern const char __utx_magic__[]; /* size of UTMPX_MAGIC */

#ifdef __LP64__
#include <sys/_types.h>
#include <sys/_types/_timeval32.h>

/*
 * these structures assume natural alignment so they are the same size
 * and layout as their 32-bit counterpart
 */
#ifdef UTMP_COMPAT
struct lastlog32 {
	__int32_t	ll_time;
	char	ll_line[UT_LINESIZE];
	char	ll_host[UT_HOSTSIZE];
};

struct utmp32 {
	char	ut_line[UT_LINESIZE];
	char	ut_name[UT_NAMESIZE];
	char	ut_host[UT_HOSTSIZE];
	__int32_t	ut_time;
};
#endif /* UTMP_COMPAT */

struct utmpx32 {
	char ut_user[_UTX_USERSIZE];	/* login name */
	char ut_id[_UTX_IDSIZE];	/* id */
	char ut_line[_UTX_LINESIZE];	/* tty name */
	pid_t ut_pid;			/* process id creating the entry */
	short ut_type;			/* type of this entry */
	struct timeval32 ut_tv;		/* time entry was created */
	char ut_host[_UTX_HOSTSIZE];	/* host name */
	__uint32_t ut_pad[16];		/* reserved for future use */
};
#endif /* __LP64__ */

struct _utmpx *__default_utx(void);

void __endutxent(struct _utmpx *);
struct utmpx *__getutxent(struct _utmpx *);
void __setutxent(struct _utmpx *);
struct utmpx *__pututxline(struct _utmpx *, const struct utmpx *);
int __utmpxname(struct _utmpx *, const char *);
#ifdef __LP64__
void _utmpx32_64(const struct utmpx32 *, struct utmpx *);
void _utmpx64_32(const struct utmpx *, struct utmpx32 *);
#endif /* __LP64__ */
void _utmpx_asl(const struct utmpx *);
const struct utmpx *_utmpx_working_copy(const struct utmpx *, struct utmpx *, int);

#ifdef UTMP_COMPAT
#ifdef __LP64__
void _getutmp32(const struct utmpx *, struct utmp32 *);
int _utmp_compat(const struct utmpx *, struct utmp32 *);
void _write_lastlog(const struct utmp32 *, const struct utmpx *);
void _write_utmp(const struct utmp32 *, int);
#else /* __LP64__ */
int _utmp_compat(const struct utmpx *, struct utmp *);
void _write_lastlog(const struct utmp *, const struct utmpx *);
void _write_utmp(const struct utmp *, int);
#endif /* __LP64__ */
void _write_utmp_compat(const struct utmpx *);
#ifdef __LP64__
void _write_wtmp(const struct utmp32 *);
#else /* __LP64__ */
void _write_wtmp(const struct utmp *);
#endif /* __LP64__ */
#endif /* UTMP_COMPAT */