system.c - platform/external/strace - Gitiles

 /*
  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
  * 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.
  */

 #include "defs.h"

 #define _LINUX_SOCKET_H
 #define _LINUX_FS_H

 #define MS_RDONLY	 1	/* Mount read-only */
 #define MS_NOSUID	 2	/* Ignore suid and sgid bits */
 #define MS_NODEV	 4	/* Disallow access to device special files */
 #define MS_NOEXEC	 8	/* Disallow program execution */
 #define MS_SYNCHRONOUS	16	/* Writes are synced at once */
 #define MS_REMOUNT	32	/* Alter flags of a mounted FS */
 #define MS_MANDLOCK	64	/* Allow mandatory locks on an FS */
 #define MS_DIRSYNC	128	/* Directory modifications are synchronous */
 #define MS_NOATIME	1024	/* Do not update access times. */
 #define MS_NODIRATIME	2048	/* Do not update directory access times */
 #define MS_BIND		4096
 #define MS_MOVE		8192
 #define MS_REC		16384
 #define MS_SILENT	32768
 #define MS_POSIXACL	(1<<16)	/* VFS does not apply the umask */
 #define MS_UNBINDABLE	(1<<17)	/* change to unbindable */
 #define MS_PRIVATE	(1<<18)	/* change to private */
 #define MS_SLAVE	(1<<19)	/* change to slave */
 #define MS_SHARED	(1<<20)	/* change to shared */
 #define MS_RELATIME	(1<<21)
 #define MS_KERNMOUNT	(1<<22)
 #define MS_I_VERSION	(1<<23)
 #define MS_STRICTATIME	(1<<24)
 #define MS_NOSEC	(1<<28)
 #define MS_BORN		(1<<29)
 #define MS_ACTIVE	(1<<30)
 #define MS_NOUSER	(1<<31)
 #define MS_MGC_VAL	0xc0ed0000	/* Magic flag number */
 #define MS_MGC_MSK	0xffff0000	/* Magic flag mask */

 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #ifdef HAVE_LINUX_CAPABILITY_H
 # include <linux/capability.h>
 #endif
 #ifdef HAVE_ASM_CACHECTL_H
 # include <asm/cachectl.h>
 #endif
 #include <linux/personality.h>

 #include "xlat/mount_flags.h"

 int
 sys_mount(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		int ignore_type = 0, ignore_data = 0;
 		unsigned long flags = tcp->u_arg[3];

 		/* Discard magic */
 		if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
 			flags &= ~MS_MGC_MSK;

 		if (flags & MS_REMOUNT)
 			ignore_type = 1;
 		else if (flags & (MS_BIND | MS_MOVE))
 			ignore_type = ignore_data = 1;

 		printpath(tcp, tcp->u_arg[0]);
 		tprints(", ");

 		printpath(tcp, tcp->u_arg[1]);
 		tprints(", ");

 		if (ignore_type && tcp->u_arg[2])
 			tprintf("%#lx", tcp->u_arg[2]);
 		else
 			printstr(tcp, tcp->u_arg[2], -1);
 		tprints(", ");

 		printflags(mount_flags, tcp->u_arg[3], "MS_???");
 		tprints(", ");

 		if (ignore_data && tcp->u_arg[4])
 			tprintf("%#lx", tcp->u_arg[4]);
 		else
 			printstr(tcp, tcp->u_arg[4], -1);
 	}
 	return 0;
 }

 #define MNT_FORCE	0x00000001	/* Attempt to forcibily umount */
 #define MNT_DETACH	0x00000002	/* Just detach from the tree */
 #define MNT_EXPIRE	0x00000004	/* Mark for expiry */

 #include "xlat/umount_flags.h"

 int
 sys_umount2(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		printstr(tcp, tcp->u_arg[0], -1);
 		tprints(", ");
 		printflags(umount_flags, tcp->u_arg[1], "MNT_???");
 	}
 	return 0;
 }

 /* These are not macros, but enums.  We just copy the values by hand
    from Linux 2.6.9 here.  */
 #include "xlat/personality_options.h"

 int
 sys_personality(struct tcb *tcp)
 {
 	if (entering(tcp))
 		printxval(personality_options, tcp->u_arg[0], "PER_???");
 	return 0;
 }

 enum {
 	SYSLOG_ACTION_CLOSE = 0,
 	SYSLOG_ACTION_OPEN,
 	SYSLOG_ACTION_READ,
 	SYSLOG_ACTION_READ_ALL,
 	SYSLOG_ACTION_READ_CLEAR,
 	SYSLOG_ACTION_CLEAR,
 	SYSLOG_ACTION_CONSOLE_OFF,
 	SYSLOG_ACTION_CONSOLE_ON,
 	SYSLOG_ACTION_CONSOLE_LEVEL,
 	SYSLOG_ACTION_SIZE_UNREAD,
 	SYSLOG_ACTION_SIZE_BUFFER
 };

 #include "xlat/syslog_action_type.h"

 int
 sys_syslog(struct tcb *tcp)
 {
 	int type = tcp->u_arg[0];

 	if (entering(tcp)) {
 		/* type */
 		printxval(syslog_action_type, type, "SYSLOG_ACTION_???");
 		tprints(", ");
 	}

 	switch (type) {
 		case SYSLOG_ACTION_READ:
 		case SYSLOG_ACTION_READ_ALL:
 		case SYSLOG_ACTION_READ_CLEAR:
 			if (entering(tcp))
 				return 0;
 			break;
 		default:
 			if (entering(tcp)) {
 				tprintf("%#lx, %lu",
 					tcp->u_arg[1], tcp->u_arg[2]);
 			}
 			return 0;
 	}

 	/* bufp */
 	if (syserror(tcp))
 		tprintf("%#lx", tcp->u_arg[1]);
 	else
 		printstr(tcp, tcp->u_arg[1], tcp->u_rval);
 	/* len */
 	tprintf(", %d", (int) tcp->u_arg[2]);

 	return 0;
 }

 #ifdef M68K
 #include "xlat/cacheflush_scope.h"

 static const struct xlat cacheflush_flags[] = {
 #ifdef FLUSH_CACHE_BOTH
 	XLAT(FLUSH_CACHE_BOTH),
 #endif
 #ifdef FLUSH_CACHE_DATA
 	XLAT(FLUSH_CACHE_DATA),
 #endif
 #ifdef FLUSH_CACHE_INSN
 	XLAT(FLUSH_CACHE_INSN),
 #endif
 	XLAT_END
 };

 int
 sys_cacheflush(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		/* addr */
 		tprintf("%#lx, ", tcp->u_arg[0]);
 		/* scope */
 		printxval(cacheflush_scope, tcp->u_arg[1], "FLUSH_SCOPE_???");
 		tprints(", ");
 		/* flags */
 		printflags(cacheflush_flags, tcp->u_arg[2], "FLUSH_CACHE_???");
 		/* len */
 		tprintf(", %lu", tcp->u_arg[3]);
 	}
 	return 0;
 }
 #endif /* M68K */

 #ifdef BFIN

 #include <bfin_sram.h>

 #include "xlat/sram_alloc_flags.h"

 int
 sys_sram_alloc(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		/* size */
 		tprintf("%lu, ", tcp->u_arg[0]);
 		/* flags */
 		printflags(sram_alloc_flags, tcp->u_arg[1], "???_SRAM");
 	}
 	return 1;
 }

 #include <asm/cachectl.h>

 static const struct xlat cacheflush_flags[] = {
 	XLAT(ICACHE),
 	XLAT(DCACHE),
 	XLAT(BCACHE),
 	XLAT_END
 };

 int
 sys_cacheflush(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		/* start addr */
 		tprintf("%#lx, ", tcp->u_arg[0]);
 		/* length */
 		tprintf("%ld, ", tcp->u_arg[1]);
 		/* flags */
 		printxval(cacheflush_flags, tcp->u_arg[1], "?CACHE");
 	}
 	return 0;
 }

 #endif

 #ifdef SH
 static const struct xlat cacheflush_flags[] = {
 #ifdef CACHEFLUSH_D_INVAL
 	XLAT(CACHEFLUSH_D_INVAL),
 #endif
 #ifdef CACHEFLUSH_D_WB
 	XLAT(CACHEFLUSH_D_WB),
 #endif
 #ifdef CACHEFLUSH_D_PURGE
 	XLAT(CACHEFLUSH_D_PURGE),
 #endif
 #ifdef CACHEFLUSH_I
 	XLAT(CACHEFLUSH_I),
 #endif
 	XLAT_END
 };

 int
 sys_cacheflush(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		/* addr */
 		tprintf("%#lx, ", tcp->u_arg[0]);
 		/* len */
 		tprintf("%lu, ", tcp->u_arg[1]);
 		/* flags */
 		printflags(cacheflush_flags, tcp->u_arg[2], "CACHEFLUSH_???");
 	}
 	return 0;
 }
 #endif /* SH */

 #ifdef SYS_capget

 #include "xlat/capabilities.h"

 #ifndef _LINUX_CAPABILITY_VERSION_1
 # define _LINUX_CAPABILITY_VERSION_1 0x19980330
 #endif
 #ifndef _LINUX_CAPABILITY_VERSION_2
 # define _LINUX_CAPABILITY_VERSION_2 0x20071026
 #endif
 #ifndef _LINUX_CAPABILITY_VERSION_3
 # define _LINUX_CAPABILITY_VERSION_3 0x20080522
 #endif

 #include "xlat/cap_version.h"

 static void
 print_cap_header(struct tcb *tcp, unsigned long addr)
 {
 	union { cap_user_header_t p; long *a; char *c; } arg;
 	long a[sizeof(*arg.p) / sizeof(long) + 1];
 	arg.a = a;

 	if (!addr)
 		tprints("NULL");
 	else if (!verbose(tcp) ||
 		 umoven(tcp, addr, sizeof(*arg.p), arg.c) < 0)
 		tprintf("%#lx", addr);
 	else {
 		tprints("{");
 		printxval(cap_version, arg.p->version,
 			  "_LINUX_CAPABILITY_VERSION_???");
 		tprintf(", %d}", arg.p->pid);
 	}
 }

 static void
 print_cap_data(struct tcb *tcp, unsigned long addr)
 {
 	union { cap_user_data_t p; long *a; char *c; } arg;
 	long a[sizeof(*arg.p) / sizeof(long) + 1];
 	arg.a = a;

 	if (!addr)
 		tprints("NULL");
 	else if (!verbose(tcp) ||
 		 (exiting(tcp) && syserror(tcp)) ||
 		 umoven(tcp, addr, sizeof(*arg.p), arg.c) < 0)
 		tprintf("%#lx", addr);
 	else {
 		tprints("{");
 		printflags(capabilities, arg.p->effective, "CAP_???");
 		tprints(", ");
 		printflags(capabilities, arg.p->permitted, "CAP_???");
 		tprints(", ");
 		printflags(capabilities, arg.p->inheritable, "CAP_???");
 		tprints("}");
 	}
 }

 int
 sys_capget(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		print_cap_header(tcp, tcp->u_arg[0]);
 		tprints(", ");
 	} else {
 		print_cap_data(tcp, tcp->u_arg[1]);
 	}
 	return 0;
 }

 int
 sys_capset(struct tcb *tcp)
 {
 	if (entering(tcp)) {
 		print_cap_header(tcp, tcp->u_arg[0]);
 		tprints(", ");
 		print_cap_data(tcp, tcp->u_arg[1]);
 	}
 	return 0;
 }

 #else

 int sys_capget(struct tcb *tcp)
 {
 	return printargs(tcp);
 }

 int sys_capset(struct tcb *tcp)
 {
 	return printargs(tcp);
 }

 #endif
	/*
	* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
	* 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.
	*/

	#include "defs.h"

	#define _LINUX_SOCKET_H
	#define _LINUX_FS_H

	#define MS_RDONLY 1 /* Mount read-only */
	#define MS_NOSUID 2 /* Ignore suid and sgid bits */
	#define MS_NODEV 4 /* Disallow access to device special files */
	#define MS_NOEXEC 8 /* Disallow program execution */
	#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
	#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
	#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
	#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
	#define MS_NOATIME 1024 /* Do not update access times. */
	#define MS_NODIRATIME 2048 /* Do not update directory access times */
	#define MS_BIND 4096
	#define MS_MOVE 8192
	#define MS_REC 16384
	#define MS_SILENT 32768
	#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
	#define MS_UNBINDABLE (1<<17) /* change to unbindable */
	#define MS_PRIVATE (1<<18) /* change to private */
	#define MS_SLAVE (1<<19) /* change to slave */
	#define MS_SHARED (1<<20) /* change to shared */
	#define MS_RELATIME (1<<21)
	#define MS_KERNMOUNT (1<<22)
	#define MS_I_VERSION (1<<23)
	#define MS_STRICTATIME (1<<24)
	#define MS_NOSEC (1<<28)
	#define MS_BORN (1<<29)
	#define MS_ACTIVE (1<<30)
	#define MS_NOUSER (1<<31)
	#define MS_MGC_VAL 0xc0ed0000 /* Magic flag number */
	#define MS_MGC_MSK 0xffff0000 /* Magic flag mask */

	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>
	#ifdef HAVE_LINUX_CAPABILITY_H
	# include <linux/capability.h>
	#endif
	#ifdef HAVE_ASM_CACHECTL_H
	# include <asm/cachectl.h>
	#endif
	#include <linux/personality.h>

	#include "xlat/mount_flags.h"

	int
	sys_mount(struct tcb *tcp)
	{
	if (entering(tcp)) {
	int ignore_type = 0, ignore_data = 0;
	unsigned long flags = tcp->u_arg[3];

	/* Discard magic */
	if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
	flags &= ~MS_MGC_MSK;

	if (flags & MS_REMOUNT)
	ignore_type = 1;
	else if (flags & (MS_BIND \| MS_MOVE))
	ignore_type = ignore_data = 1;

	printpath(tcp, tcp->u_arg[0]);
	tprints(", ");

	printpath(tcp, tcp->u_arg[1]);
	tprints(", ");

	if (ignore_type && tcp->u_arg[2])
	tprintf("%#lx", tcp->u_arg[2]);
	else
	printstr(tcp, tcp->u_arg[2], -1);
	tprints(", ");

	printflags(mount_flags, tcp->u_arg[3], "MS_???");
	tprints(", ");

	if (ignore_data && tcp->u_arg[4])
	tprintf("%#lx", tcp->u_arg[4]);
	else
	printstr(tcp, tcp->u_arg[4], -1);
	}
	return 0;
	}

	#define MNT_FORCE 0x00000001 /* Attempt to forcibily umount */
	#define MNT_DETACH 0x00000002 /* Just detach from the tree */
	#define MNT_EXPIRE 0x00000004 /* Mark for expiry */

	#include "xlat/umount_flags.h"

	int
	sys_umount2(struct tcb *tcp)
	{
	if (entering(tcp)) {
	printstr(tcp, tcp->u_arg[0], -1);
	tprints(", ");
	printflags(umount_flags, tcp->u_arg[1], "MNT_???");
	}
	return 0;
	}

	/* These are not macros, but enums. We just copy the values by hand
	from Linux 2.6.9 here. */
	#include "xlat/personality_options.h"

	int
	sys_personality(struct tcb *tcp)
	{
	if (entering(tcp))
	printxval(personality_options, tcp->u_arg[0], "PER_???");
	return 0;
	}

	enum {
	SYSLOG_ACTION_CLOSE = 0,
	SYSLOG_ACTION_OPEN,
	SYSLOG_ACTION_READ,
	SYSLOG_ACTION_READ_ALL,
	SYSLOG_ACTION_READ_CLEAR,
	SYSLOG_ACTION_CLEAR,
	SYSLOG_ACTION_CONSOLE_OFF,
	SYSLOG_ACTION_CONSOLE_ON,
	SYSLOG_ACTION_CONSOLE_LEVEL,
	SYSLOG_ACTION_SIZE_UNREAD,
	SYSLOG_ACTION_SIZE_BUFFER
	};

	#include "xlat/syslog_action_type.h"

	int
	sys_syslog(struct tcb *tcp)
	{
	int type = tcp->u_arg[0];

	if (entering(tcp)) {
	/* type */
	printxval(syslog_action_type, type, "SYSLOG_ACTION_???");
	tprints(", ");
	}

	switch (type) {
	case SYSLOG_ACTION_READ:
	case SYSLOG_ACTION_READ_ALL:
	case SYSLOG_ACTION_READ_CLEAR:
	if (entering(tcp))
	return 0;
	break;
	default:
	if (entering(tcp)) {
	tprintf("%#lx, %lu",
	tcp->u_arg[1], tcp->u_arg[2]);
	}
	return 0;
	}

	/* bufp */
	if (syserror(tcp))
	tprintf("%#lx", tcp->u_arg[1]);
	else
	printstr(tcp, tcp->u_arg[1], tcp->u_rval);
	/* len */
	tprintf(", %d", (int) tcp->u_arg[2]);

	return 0;
	}

	#ifdef M68K
	#include "xlat/cacheflush_scope.h"

	static const struct xlat cacheflush_flags[] = {
	#ifdef FLUSH_CACHE_BOTH
	XLAT(FLUSH_CACHE_BOTH),
	#endif
	#ifdef FLUSH_CACHE_DATA
	XLAT(FLUSH_CACHE_DATA),
	#endif
	#ifdef FLUSH_CACHE_INSN
	XLAT(FLUSH_CACHE_INSN),
	#endif
	XLAT_END
	};

	int
	sys_cacheflush(struct tcb *tcp)
	{
	if (entering(tcp)) {
	/* addr */
	tprintf("%#lx, ", tcp->u_arg[0]);
	/* scope */
	printxval(cacheflush_scope, tcp->u_arg[1], "FLUSH_SCOPE_???");
	tprints(", ");
	/* flags */
	printflags(cacheflush_flags, tcp->u_arg[2], "FLUSH_CACHE_???");
	/* len */
	tprintf(", %lu", tcp->u_arg[3]);
	}
	return 0;
	}
	#endif /* M68K */

	#ifdef BFIN

	#include <bfin_sram.h>

	#include "xlat/sram_alloc_flags.h"

	int
	sys_sram_alloc(struct tcb *tcp)
	{
	if (entering(tcp)) {
	/* size */
	tprintf("%lu, ", tcp->u_arg[0]);
	/* flags */
	printflags(sram_alloc_flags, tcp->u_arg[1], "???_SRAM");
	}
	return 1;
	}

	#include <asm/cachectl.h>

	static const struct xlat cacheflush_flags[] = {
	XLAT(ICACHE),
	XLAT(DCACHE),
	XLAT(BCACHE),
	XLAT_END
	};

	int
	sys_cacheflush(struct tcb *tcp)
	{
	if (entering(tcp)) {
	/* start addr */
	tprintf("%#lx, ", tcp->u_arg[0]);
	/* length */
	tprintf("%ld, ", tcp->u_arg[1]);
	/* flags */
	printxval(cacheflush_flags, tcp->u_arg[1], "?CACHE");
	}
	return 0;
	}

	#endif

	#ifdef SH
	static const struct xlat cacheflush_flags[] = {
	#ifdef CACHEFLUSH_D_INVAL
	XLAT(CACHEFLUSH_D_INVAL),
	#endif
	#ifdef CACHEFLUSH_D_WB
	XLAT(CACHEFLUSH_D_WB),
	#endif
	#ifdef CACHEFLUSH_D_PURGE
	XLAT(CACHEFLUSH_D_PURGE),
	#endif
	#ifdef CACHEFLUSH_I
	XLAT(CACHEFLUSH_I),
	#endif
	XLAT_END
	};

	int
	sys_cacheflush(struct tcb *tcp)
	{
	if (entering(tcp)) {
	/* addr */
	tprintf("%#lx, ", tcp->u_arg[0]);
	/* len */
	tprintf("%lu, ", tcp->u_arg[1]);
	/* flags */
	printflags(cacheflush_flags, tcp->u_arg[2], "CACHEFLUSH_???");
	}
	return 0;
	}
	#endif /* SH */

	#ifdef SYS_capget

	#include "xlat/capabilities.h"

	#ifndef _LINUX_CAPABILITY_VERSION_1
	# define _LINUX_CAPABILITY_VERSION_1 0x19980330
	#endif
	#ifndef _LINUX_CAPABILITY_VERSION_2
	# define _LINUX_CAPABILITY_VERSION_2 0x20071026
	#endif
	#ifndef _LINUX_CAPABILITY_VERSION_3
	# define _LINUX_CAPABILITY_VERSION_3 0x20080522
	#endif

	#include "xlat/cap_version.h"

	static void
	print_cap_header(struct tcb *tcp, unsigned long addr)
	{
	union { cap_user_header_t p; long a; char c; } arg;
	long a[sizeof(*arg.p) / sizeof(long) + 1];
	arg.a = a;

	if (!addr)
	tprints("NULL");
	else if (!verbose(tcp) \|\|
	umoven(tcp, addr, sizeof(*arg.p), arg.c) < 0)
	tprintf("%#lx", addr);
	else {
	tprints("{");
	printxval(cap_version, arg.p->version,
	"_LINUX_CAPABILITY_VERSION_???");
	tprintf(", %d}", arg.p->pid);
	}
	}

	static void
	print_cap_data(struct tcb *tcp, unsigned long addr)
	{
	union { cap_user_data_t p; long a; char c; } arg;
	long a[sizeof(*arg.p) / sizeof(long) + 1];
	arg.a = a;

	if (!addr)
	tprints("NULL");
	else if (!verbose(tcp) \|\|
	(exiting(tcp) && syserror(tcp)) \|\|
	umoven(tcp, addr, sizeof(*arg.p), arg.c) < 0)
	tprintf("%#lx", addr);
	else {
	tprints("{");
	printflags(capabilities, arg.p->effective, "CAP_???");
	tprints(", ");
	printflags(capabilities, arg.p->permitted, "CAP_???");
	tprints(", ");
	printflags(capabilities, arg.p->inheritable, "CAP_???");
	tprints("}");
	}
	}

	int
	sys_capget(struct tcb *tcp)
	{
	if (entering(tcp)) {
	print_cap_header(tcp, tcp->u_arg[0]);
	tprints(", ");
	} else {
	print_cap_data(tcp, tcp->u_arg[1]);
	}
	return 0;
	}

	int
	sys_capset(struct tcb *tcp)
	{
	if (entering(tcp)) {
	print_cap_header(tcp, tcp->u_arg[0]);
	tprints(", ");
	print_cap_data(tcp, tcp->u_arg[1]);
	}
	return 0;
	}

	#else

	int sys_capget(struct tcb *tcp)
	{
	return printargs(tcp);
	}

	int sys_capset(struct tcb *tcp)
	{
	return printargs(tcp);
	}

	#endif