ipc.c - fp2-dev/platform/external/strace - Gitiles

 /*
  * Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de>
  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
  * 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.
  *
  *	$Id$
  */

 #include "defs.h"

 #if defined(LINUX) || defined(SUNOS4) || defined(FREEBSD)

 #include <sys/ipc.h>
 #include <sys/sem.h>
 #include <sys/msg.h>
 #include <sys/shm.h>

 #ifndef MSG_STAT
 #define MSG_STAT 11
 #endif
 #ifndef MSG_INFO
 #define MSG_INFO 12
 #endif
 #ifndef SHM_STAT
 #define SHM_STAT 13
 #endif
 #ifndef SHM_INFO
 #define SHM_INFO 14
 #endif
 #ifndef SEM_STAT
 #define SEM_STAT 18
 #endif
 #ifndef SEM_INFO
 #define SEM_INFO 19
 #endif

 static struct xlat msgctl_flags[] = {
 	{ IPC_RMID,	"IPC_RMID"	},
 	{ IPC_SET,	"IPC_SET"	},
 	{ IPC_STAT,	"IPC_STAT"	},
 #ifdef LINUX
 	{ IPC_INFO,	"IPC_INFO"	},
 	{ MSG_STAT,	"MSG_STAT"	},
 	{ MSG_INFO,	"MSG_INFO"	},
 #endif /* LINUX */
 	{ 0,		NULL		},
 };

 static struct xlat semctl_flags[] = {
 	{ IPC_RMID,	"IPC_RMID"	},
 	{ IPC_SET,	"IPC_SET"	},
 	{ IPC_STAT,	"IPC_STAT"	},
 #ifdef LINUX
 	{ IPC_INFO,	"IPC_INFO"	},
 	{ SEM_STAT,	"SEM_STAT"	},
 	{ SEM_INFO,	"SEM_INFO"	},
 #endif /* LINUX */
 	{ GETPID,	"GETPID"	},
 	{ GETVAL,	"GETVAL"	},
 	{ GETALL,	"GETALL"	},
 	{ GETNCNT,	"GETNCNT"	},
 	{ GETZCNT,	"GETZCNT"	},
 	{ SETVAL,	"SETVAL"	},
 	{ SETALL,	"SETALL"	},
 	{ 0,		NULL		},
 };

 static struct xlat shmctl_flags[] = {
 	{ IPC_RMID,	"IPC_RMID"	},
 	{ IPC_SET,	"IPC_SET"	},
 	{ IPC_STAT,	"IPC_STAT"	},
 #ifdef LINUX
 	{ IPC_INFO,	"IPC_INFO"	},
 	{ SHM_STAT,	"SHM_STAT"	},
 	{ SHM_INFO,	"SHM_INFO"	},
 #endif /* LINUX */
 #ifdef SHM_LOCK
 	{ SHM_LOCK,	"SHM_LOCK"	},
 #endif
 #ifdef SHM_UNLOCK
 	{ SHM_UNLOCK,	"SHM_UNLOCK"	},
 #endif
 	{ 0,		NULL		},
 };

 static struct xlat resource_flags[] = {
 	{ IPC_CREAT,	"IPC_CREAT"	},
 	{ IPC_EXCL,	"IPC_EXCL"	},
 	{ IPC_NOWAIT,	"IPC_NOWAIT"	},
 	{ 0,		NULL		},
 };

 static struct xlat shm_flags[] = {
 #ifdef LINUX
 	{ SHM_REMAP,	"SHM_REMAP"	},
 #endif /* LINUX */
 	{ SHM_RDONLY,	"SHM_RDONLY"	},
 	{ SHM_RND,	"SHM_RND"	},
 	{ 0,		NULL		},
 };

 static struct xlat msg_flags[] = {
 	{ MSG_NOERROR,	"MSG_NOERROR"	},
 #ifdef LINUX
 	{ MSG_EXCEPT,	"MSG_EXCEPT"	},
 #endif /* LINUX */
 	{ IPC_NOWAIT,	"IPC_NOWAIT"	},
 	{ 0,		NULL		},
 };

 int sys_msgget(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		if (tcp->u_arg[0])
 			tprintf("%lu", tcp->u_arg[0]);
 		else
 			tprintf("IPC_PRIVATE");
 		tprintf(", ");
 		if (printflags(resource_flags, tcp->u_arg[1]) != 0)
 			tprintf("|");
 		tprintf("%#lo", tcp->u_arg[1] & 0666);
 	}
 	return 0;
 }

 int sys_msgctl(tcp)
 struct tcb *tcp;
 {
 	char *cmd = xlookup(msgctl_flags, tcp->u_arg[1]);

 	if (entering(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 		tprintf(", %s", cmd == NULL ? "MSG_???" : cmd);
 #ifdef LINUX
 		tprintf(", %#lx", tcp->u_arg[3]);
 #else /* !LINUX */
 		tprintf(", %#lx", tcp->u_arg[2]);
 #endif /* !LINUX */
 	}
 	return 0;
 }

 int sys_msgsnd(tcp)
 struct tcb *tcp;
 {
 	long mtype;

 	if (entering(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 #ifdef LINUX
 		umove(tcp, tcp->u_arg[3], &mtype);
 		tprintf(", {%lu, ", mtype);
 		printstr(tcp, tcp->u_arg[3] + sizeof(long),
 			tcp->u_arg[1]);
 		tprintf("}, %lu", tcp->u_arg[1]);
 		tprintf(", ");
 		if (printflags(msg_flags, tcp->u_arg[2]) == 0)
 			tprintf("0");
 #else /* !LINUX */
 		umove(tcp, tcp->u_arg[1], &mtype);
 		tprintf(", {%lu, ", mtype);
 		printstr(tcp, tcp->u_arg[1] + sizeof(long),
 			tcp->u_arg[2]);
 		tprintf("}, %lu", tcp->u_arg[2]);
 		tprintf(", ");
 		if (printflags(msg_flags, tcp->u_arg[3]) == 0)
 			tprintf("0");
 #endif /* !LINUX */
 	}
 	return 0;
 }

 int sys_msgrcv(tcp)
 struct tcb *tcp;
 {
 	long mtype;
 #ifdef LINUX
 	struct ipc_wrapper {
 		struct msgbuf *msgp;
 		long msgtyp;
 	} tmp;
 #endif


 	if (exiting(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 #ifdef LINUX
 		umove(tcp, tcp->u_arg[3], &tmp);
 		umove(tcp, (long) tmp.msgp, &mtype);
 		tprintf(", {%lu, ", mtype);
 		printstr(tcp, (long) (tmp.msgp) + sizeof(long),
 			tcp->u_arg[1]);
 		tprintf("}, %lu", tcp->u_arg[1]);
 		tprintf(", %ld", tmp.msgtyp);
 		tprintf(", ");
 		if (printflags(msg_flags, tcp->u_arg[2]) == 0)
 			tprintf("0");
 #else /* !LINUX */
 		umove(tcp, tcp->u_arg[1], &mtype);
 		tprintf(", {%lu, ", mtype);
 		printstr(tcp, tcp->u_arg[1] + sizeof(long),
 			tcp->u_arg[2]);
 		tprintf("}, %lu", tcp->u_arg[2]);
 		tprintf(", %ld", tcp->u_arg[3]);
 		tprintf(", ");
 		if (printflags(msg_flags, tcp->u_arg[4]) == 0)
 			tprintf("0");
 #endif /* !LINUX */
 	}
 	return 0;
 }

 int sys_semop(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 #ifdef LINUX
 		tprintf(", %#lx", tcp->u_arg[3]);
 		tprintf(", %lu", tcp->u_arg[1]);
 #else /* !LINUX */
 		tprintf(", %#lx", tcp->u_arg[1]);
 		tprintf(", %lu", tcp->u_arg[2]);
 #endif /* !LINUX */
 	}
 	return 0;
 }

 int sys_semget(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		if (tcp->u_arg[0])
 			tprintf("%lu", tcp->u_arg[0]);
 		else
 			tprintf("IPC_PRIVATE");
 		tprintf(", %lu", tcp->u_arg[1]);
 		tprintf(", ");
 		if (printflags(resource_flags, tcp->u_arg[2]) != 0)
 			tprintf("|");
 		tprintf("%#lo", tcp->u_arg[2] & 0666);
 	}
 	return 0;
 }

 int sys_semctl(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 		tprintf(", %lu, ", tcp->u_arg[1]);
 		printxval(semctl_flags, tcp->u_arg[2], "SEM_???");
 		tprintf(", %#lx", tcp->u_arg[3]);
 	}
 	return 0;
 }

 int sys_shmget(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		if (tcp->u_arg[0])
 			tprintf("%lu", tcp->u_arg[0]);
 		else
 			tprintf("IPC_PRIVATE");
 		tprintf(", %lu", tcp->u_arg[1]);
 		tprintf(", ");
 		if (printflags(resource_flags, tcp->u_arg[2]) != 0)
 			tprintf("|");
 		tprintf("%#lo", tcp->u_arg[2] & 0666);
 	}
 	return 0;
 }

 int sys_shmctl(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp)) {
 		tprintf("%lu, ", tcp->u_arg[0]);
 		printxval(shmctl_flags, tcp->u_arg[1], "SHM_???");
 #ifdef LINUX
 		tprintf(", %#lx", tcp->u_arg[3]);
 #else /* !LINUX */
 		tprintf(", %#lx", tcp->u_arg[2]);
 #endif /* !LINUX */
 	}
 	return 0;
 }

 int sys_shmat(tcp)
 struct tcb *tcp;
 {
 #ifdef LINUX
 	unsigned long raddr;
 #endif /* LINUX */

 	if (exiting(tcp)) {
 		tprintf("%lu", tcp->u_arg[0]);
 #ifdef LINUX
 		tprintf(", %#lx", tcp->u_arg[3]);
 		tprintf(", ");
 		if (printflags(shm_flags, tcp->u_arg[1]) == 0)
 			tprintf("0");
 #else /* !LINUX */
 		tprintf(", %#lx", tcp->u_arg[1]);
 		tprintf(", ");
 		if (printflags(shm_flags, tcp->u_arg[2]) == 0)
 			tprintf("0");
 #endif /* !LINUX */
 		if (syserror(tcp))
 			return 0;
 #ifdef LINUX
 		if (umove(tcp, tcp->u_arg[2], &raddr) < 0)
 			return RVAL_NONE;
 		tcp->u_rval = raddr;
 #endif /* LINUX */
 		return RVAL_HEX;
 	}
 	return 0;
 }

 int sys_shmdt(tcp)
 struct tcb *tcp;
 {
 	if (entering(tcp))
 #ifdef LINUX
 		tprintf("%#lx", tcp->u_arg[3]);
 #else /* !LINUX */
 		tprintf("%#lx", tcp->u_arg[0]);
 #endif /* !LINUX */
 	return 0;
 }

 #endif /* defined(LINUX) || defined(SUNOS4) || defined(FREEBSD) */
	/*
	* Copyright (c) 1993 Ulrich Pegelow <pegelow@moorea.uni-muenster.de>
	* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
	* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
	* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
	* 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.
	*
	* $Id$
	*/

	#include "defs.h"

	#if defined(LINUX) \|\| defined(SUNOS4) \|\| defined(FREEBSD)

	#include <sys/ipc.h>
	#include <sys/sem.h>
	#include <sys/msg.h>
	#include <sys/shm.h>

	#ifndef MSG_STAT
	#define MSG_STAT 11
	#endif
	#ifndef MSG_INFO
	#define MSG_INFO 12
	#endif
	#ifndef SHM_STAT
	#define SHM_STAT 13
	#endif
	#ifndef SHM_INFO
	#define SHM_INFO 14
	#endif
	#ifndef SEM_STAT
	#define SEM_STAT 18
	#endif
	#ifndef SEM_INFO
	#define SEM_INFO 19
	#endif

	static struct xlat msgctl_flags[] = {
	{ IPC_RMID, "IPC_RMID" },
	{ IPC_SET, "IPC_SET" },
	{ IPC_STAT, "IPC_STAT" },
	#ifdef LINUX
	{ IPC_INFO, "IPC_INFO" },
	{ MSG_STAT, "MSG_STAT" },
	{ MSG_INFO, "MSG_INFO" },
	#endif /* LINUX */
	{ 0, NULL },
	};

	static struct xlat semctl_flags[] = {
	{ IPC_RMID, "IPC_RMID" },
	{ IPC_SET, "IPC_SET" },
	{ IPC_STAT, "IPC_STAT" },
	#ifdef LINUX
	{ IPC_INFO, "IPC_INFO" },
	{ SEM_STAT, "SEM_STAT" },
	{ SEM_INFO, "SEM_INFO" },
	#endif /* LINUX */
	{ GETPID, "GETPID" },
	{ GETVAL, "GETVAL" },
	{ GETALL, "GETALL" },
	{ GETNCNT, "GETNCNT" },
	{ GETZCNT, "GETZCNT" },
	{ SETVAL, "SETVAL" },
	{ SETALL, "SETALL" },
	{ 0, NULL },
	};

	static struct xlat shmctl_flags[] = {
	{ IPC_RMID, "IPC_RMID" },
	{ IPC_SET, "IPC_SET" },
	{ IPC_STAT, "IPC_STAT" },
	#ifdef LINUX
	{ IPC_INFO, "IPC_INFO" },
	{ SHM_STAT, "SHM_STAT" },
	{ SHM_INFO, "SHM_INFO" },
	#endif /* LINUX */
	#ifdef SHM_LOCK
	{ SHM_LOCK, "SHM_LOCK" },
	#endif
	#ifdef SHM_UNLOCK
	{ SHM_UNLOCK, "SHM_UNLOCK" },
	#endif
	{ 0, NULL },
	};

	static struct xlat resource_flags[] = {
	{ IPC_CREAT, "IPC_CREAT" },
	{ IPC_EXCL, "IPC_EXCL" },
	{ IPC_NOWAIT, "IPC_NOWAIT" },
	{ 0, NULL },
	};

	static struct xlat shm_flags[] = {
	#ifdef LINUX
	{ SHM_REMAP, "SHM_REMAP" },
	#endif /* LINUX */
	{ SHM_RDONLY, "SHM_RDONLY" },
	{ SHM_RND, "SHM_RND" },
	{ 0, NULL },
	};

	static struct xlat msg_flags[] = {
	{ MSG_NOERROR, "MSG_NOERROR" },
	#ifdef LINUX
	{ MSG_EXCEPT, "MSG_EXCEPT" },
	#endif /* LINUX */
	{ IPC_NOWAIT, "IPC_NOWAIT" },
	{ 0, NULL },
	};

	int sys_msgget(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	if (tcp->u_arg[0])
	tprintf("%lu", tcp->u_arg[0]);
	else
	tprintf("IPC_PRIVATE");
	tprintf(", ");
	if (printflags(resource_flags, tcp->u_arg[1]) != 0)
	tprintf("\|");
	tprintf("%#lo", tcp->u_arg[1] & 0666);
	}
	return 0;
	}

	int sys_msgctl(tcp)
	struct tcb *tcp;
	{
	char *cmd = xlookup(msgctl_flags, tcp->u_arg[1]);

	if (entering(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	tprintf(", %s", cmd == NULL ? "MSG_???" : cmd);
	#ifdef LINUX
	tprintf(", %#lx", tcp->u_arg[3]);
	#else /* !LINUX */
	tprintf(", %#lx", tcp->u_arg[2]);
	#endif /* !LINUX */
	}
	return 0;
	}

	int sys_msgsnd(tcp)
	struct tcb *tcp;
	{
	long mtype;

	if (entering(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	#ifdef LINUX
	umove(tcp, tcp->u_arg[3], &mtype);
	tprintf(", {%lu, ", mtype);
	printstr(tcp, tcp->u_arg[3] + sizeof(long),
	tcp->u_arg[1]);
	tprintf("}, %lu", tcp->u_arg[1]);
	tprintf(", ");
	if (printflags(msg_flags, tcp->u_arg[2]) == 0)
	tprintf("0");
	#else /* !LINUX */
	umove(tcp, tcp->u_arg[1], &mtype);
	tprintf(", {%lu, ", mtype);
	printstr(tcp, tcp->u_arg[1] + sizeof(long),
	tcp->u_arg[2]);
	tprintf("}, %lu", tcp->u_arg[2]);
	tprintf(", ");
	if (printflags(msg_flags, tcp->u_arg[3]) == 0)
	tprintf("0");
	#endif /* !LINUX */
	}
	return 0;
	}

	int sys_msgrcv(tcp)
	struct tcb *tcp;
	{
	long mtype;
	#ifdef LINUX
	struct ipc_wrapper {
	struct msgbuf *msgp;
	long msgtyp;
	} tmp;
	#endif


	if (exiting(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	#ifdef LINUX
	umove(tcp, tcp->u_arg[3], &tmp);
	umove(tcp, (long) tmp.msgp, &mtype);
	tprintf(", {%lu, ", mtype);
	printstr(tcp, (long) (tmp.msgp) + sizeof(long),
	tcp->u_arg[1]);
	tprintf("}, %lu", tcp->u_arg[1]);
	tprintf(", %ld", tmp.msgtyp);
	tprintf(", ");
	if (printflags(msg_flags, tcp->u_arg[2]) == 0)
	tprintf("0");
	#else /* !LINUX */
	umove(tcp, tcp->u_arg[1], &mtype);
	tprintf(", {%lu, ", mtype);
	printstr(tcp, tcp->u_arg[1] + sizeof(long),
	tcp->u_arg[2]);
	tprintf("}, %lu", tcp->u_arg[2]);
	tprintf(", %ld", tcp->u_arg[3]);
	tprintf(", ");
	if (printflags(msg_flags, tcp->u_arg[4]) == 0)
	tprintf("0");
	#endif /* !LINUX */
	}
	return 0;
	}

	int sys_semop(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	#ifdef LINUX
	tprintf(", %#lx", tcp->u_arg[3]);
	tprintf(", %lu", tcp->u_arg[1]);
	#else /* !LINUX */
	tprintf(", %#lx", tcp->u_arg[1]);
	tprintf(", %lu", tcp->u_arg[2]);
	#endif /* !LINUX */
	}
	return 0;
	}

	int sys_semget(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	if (tcp->u_arg[0])
	tprintf("%lu", tcp->u_arg[0]);
	else
	tprintf("IPC_PRIVATE");
	tprintf(", %lu", tcp->u_arg[1]);
	tprintf(", ");
	if (printflags(resource_flags, tcp->u_arg[2]) != 0)
	tprintf("\|");
	tprintf("%#lo", tcp->u_arg[2] & 0666);
	}
	return 0;
	}

	int sys_semctl(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	tprintf(", %lu, ", tcp->u_arg[1]);
	printxval(semctl_flags, tcp->u_arg[2], "SEM_???");
	tprintf(", %#lx", tcp->u_arg[3]);
	}
	return 0;
	}

	int sys_shmget(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	if (tcp->u_arg[0])
	tprintf("%lu", tcp->u_arg[0]);
	else
	tprintf("IPC_PRIVATE");
	tprintf(", %lu", tcp->u_arg[1]);
	tprintf(", ");
	if (printflags(resource_flags, tcp->u_arg[2]) != 0)
	tprintf("\|");
	tprintf("%#lo", tcp->u_arg[2] & 0666);
	}
	return 0;
	}

	int sys_shmctl(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp)) {
	tprintf("%lu, ", tcp->u_arg[0]);
	printxval(shmctl_flags, tcp->u_arg[1], "SHM_???");
	#ifdef LINUX
	tprintf(", %#lx", tcp->u_arg[3]);
	#else /* !LINUX */
	tprintf(", %#lx", tcp->u_arg[2]);
	#endif /* !LINUX */
	}
	return 0;
	}

	int sys_shmat(tcp)
	struct tcb *tcp;
	{
	#ifdef LINUX
	unsigned long raddr;
	#endif /* LINUX */

	if (exiting(tcp)) {
	tprintf("%lu", tcp->u_arg[0]);
	#ifdef LINUX
	tprintf(", %#lx", tcp->u_arg[3]);
	tprintf(", ");
	if (printflags(shm_flags, tcp->u_arg[1]) == 0)
	tprintf("0");
	#else /* !LINUX */
	tprintf(", %#lx", tcp->u_arg[1]);
	tprintf(", ");
	if (printflags(shm_flags, tcp->u_arg[2]) == 0)
	tprintf("0");
	#endif /* !LINUX */
	if (syserror(tcp))
	return 0;
	#ifdef LINUX
	if (umove(tcp, tcp->u_arg[2], &raddr) < 0)
	return RVAL_NONE;
	tcp->u_rval = raddr;
	#endif /* LINUX */
	return RVAL_HEX;
	}
	return 0;
	}

	int sys_shmdt(tcp)
	struct tcb *tcp;
	{
	if (entering(tcp))
	#ifdef LINUX
	tprintf("%#lx", tcp->u_arg[3]);
	#else /* !LINUX */
	tprintf("%#lx", tcp->u_arg[0]);
	#endif /* !LINUX */
	return 0;
	}

	#endif /* defined(LINUX) \|\| defined(SUNOS4) \|\| defined(FREEBSD) */