/*
 * 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>
 * Copyright (c) 2003-2006 Roland McGrath <roland@redhat.com>
 * Copyright (c) 2006-2015 Dmitry V. Levin <ldv@altlinux.org>
 * Copyright (c) 2015-2019 The strace developers.
 * All rights reserved.
 *
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */

#include "defs.h"
#include "ipc_defs.h"

#ifdef HAVE_SYS_SEM_H
# include <sys/sem.h>
#elif defined HAVE_LINUX_SEM_H
# include <linux/sem.h>
#endif

#include "xlat/semctl_flags.h"
#include "xlat/semop_flags.h"

#if defined HAVE_SYS_SEM_H || defined HAVE_LINUX_SEM_H
static bool
print_sembuf(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
{
	const struct sembuf *sb = elem_buf;

	tprintf("{%u, %d, ", sb->sem_num, sb->sem_op);
	printflags(semop_flags, (unsigned short) sb->sem_flg, "SEM_???");
	tprints("}");

	return true;
}
#endif

static void
tprint_sembuf_array(struct tcb *const tcp, const kernel_ulong_t addr,
		    const unsigned int count)
{
#if defined HAVE_SYS_SEM_H || defined HAVE_LINUX_SEM_H
	struct sembuf sb;
	print_array(tcp, addr, count, &sb, sizeof(sb),
		    tfetch_mem, print_sembuf, 0);
#else
	printaddr(addr);
#endif
	tprintf(", %u", count);
}

SYS_FUNC(semop)
{
	tprintf("%d, ", (int) tcp->u_arg[0]);
	if (indirect_ipccall(tcp)) {
		tprint_sembuf_array(tcp, tcp->u_arg[3], tcp->u_arg[1]);
	} else {
		tprint_sembuf_array(tcp, tcp->u_arg[1], tcp->u_arg[2]);
	}
	return RVAL_DECODED;
}

static int
do_semtimedop(struct tcb *const tcp, const print_obj_by_addr_fn print_ts)
{
	tprintf("%d, ", (int) tcp->u_arg[0]);
	if (indirect_ipccall(tcp)) {
		tprint_sembuf_array(tcp, tcp->u_arg[3], tcp->u_arg[1]);
		tprints(", ");
#if defined(S390) || defined(S390X)
		print_ts(tcp, tcp->u_arg[2]);
#else
		print_ts(tcp, tcp->u_arg[4]);
#endif
	} else {
		tprint_sembuf_array(tcp, tcp->u_arg[1], tcp->u_arg[2]);
		tprints(", ");
		print_ts(tcp, tcp->u_arg[3]);
	}
	return RVAL_DECODED;
}

#if HAVE_ARCH_TIME32_SYSCALLS
SYS_FUNC(semtimedop_time32)
{
	return do_semtimedop(tcp, print_timespec32);
}
#endif

SYS_FUNC(semtimedop_time64)
{
	return do_semtimedop(tcp, print_timespec64);
}

SYS_FUNC(semget)
{
	printxval(ipc_private, (unsigned int) tcp->u_arg[0], NULL);
	tprintf(", %d, ", (int) tcp->u_arg[1]);
	if (printflags(resource_flags, tcp->u_arg[2] & ~0777, NULL) != 0)
		tprints("|");
	print_numeric_umode_t(tcp->u_arg[2] & 0777);
	return RVAL_DECODED;
}

SYS_FUNC(semctl)
{
	tprintf("%d, %d, ", (int) tcp->u_arg[0], (int) tcp->u_arg[1]);
	PRINTCTL(semctl_flags, tcp->u_arg[2], "SEM_???");
	tprints(", ");
	if (indirect_ipccall(tcp)
#ifdef SPARC64
	    && current_personality != 0
#endif
	   ) {
		printnum_ptr(tcp, tcp->u_arg[3]);
	} else {
		printaddr(tcp->u_arg[3]);
	}
	return RVAL_DECODED;
}
