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/**
* Enhanced Seccomp MIPS Specific Code
*
* Copyright (c) 2014 Imagination Technologies Ltd.
* Author: Markos Chandras <markos.chandras@imgtec.com>
*
*/
/*
* This library is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License as
* published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, see <http://www.gnu.org/licenses>.
*/
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <linux/audit.h>
#include "db.h"
#include "syscalls.h"
#include "arch.h"
#include "arch-mips.h"
/* O32 ABI */
#define __SCMP_NR_BASE 4000
/* mips syscall numbers */
#define __mips_NR_socketcall (__SCMP_NR_BASE + 102)
#define __mips_NR_ipc (__SCMP_NR_BASE + 117)
/**
* Resolve a syscall name to a number
* @param name the syscall name
*
* Resolve the given syscall name to the syscall number using the syscall table.
* Returns the syscall number on success, including negative pseudo syscall
* numbers; returns __NR_SCMP_ERROR on failure.
*
*/
int mips_syscall_resolve_name_raw(const char *name)
{
int sys;
/* NOTE: we don't want to modify the pseudo-syscall numbers */
sys = mips_syscall_resolve_name(name);
if (sys == __NR_SCMP_ERROR || sys < 0)
return sys;
return sys + __SCMP_NR_BASE;
}
/**
* Resolve a syscall number to a name
* @param num the syscall number
*
* Resolve the given syscall number to the syscall name using the syscall table.
* Returns a pointer to the syscall name string on success, including pseudo
* syscall names; returns NULL on failure.
*
*/
const char *mips_syscall_resolve_num_raw(int num)
{
/* NOTE: we don't want to modify the pseudo-syscall numbers */
if (num >= __SCMP_NR_BASE)
num -= __SCMP_NR_BASE;
return mips_syscall_resolve_num(num);
}
ARCH_DEF(mips)
const struct arch_def arch_def_mips = {
.token = SCMP_ARCH_MIPS,
.token_bpf = AUDIT_ARCH_MIPS,
.size = ARCH_SIZE_32,
.endian = ARCH_ENDIAN_BIG,
.sys_socketcall = __mips_NR_socketcall,
.sys_ipc = __mips_NR_ipc,
.syscall_resolve_name = abi_syscall_resolve_name_munge,
.syscall_resolve_name_raw = mips_syscall_resolve_name_raw,
.syscall_resolve_num = abi_syscall_resolve_num_munge,
.syscall_resolve_num_raw = mips_syscall_resolve_num_raw,
.syscall_rewrite = abi_syscall_rewrite,
.rule_add = abi_rule_add,
};
const struct arch_def arch_def_mipsel = {
.token = SCMP_ARCH_MIPSEL,
.token_bpf = AUDIT_ARCH_MIPSEL,
.size = ARCH_SIZE_32,
.endian = ARCH_ENDIAN_LITTLE,
.sys_socketcall = __mips_NR_socketcall,
.sys_ipc = __mips_NR_ipc,
.syscall_resolve_name = abi_syscall_resolve_name_munge,
.syscall_resolve_name_raw = mips_syscall_resolve_name_raw,
.syscall_resolve_num = abi_syscall_resolve_num_munge,
.syscall_resolve_num_raw = mips_syscall_resolve_num_raw,
.syscall_rewrite = abi_syscall_rewrite,
.rule_add = abi_rule_add,
};
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