[linux-seccomp.git] / libseccomp / tools / util.c

/**
 * Tool utility functions
 *
 * Copyright (c) 2014 Red Hat <pmoore@redhat.com>
 * Author: Paul Moore <paul@paul-moore.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 <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <linux/audit.h>

#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
#include <endian.h>

#include "util.h"

/* determine the native architecture */
#if __i386__
#define ARCH_NATIVE		AUDIT_ARCH_I386
#elif __x86_64__
#ifdef __ILP32__
#define ARCH_NATIVE		AUDIT_ARCH_X86_64
#else
#define ARCH_NATIVE		AUDIT_ARCH_X86_64
#endif /* __ILP32__ */
#elif __arm__
#define ARCH_NATIVE		AUDIT_ARCH_ARM
#elif __aarch64__
#define ARCH_NATIVE		AUDIT_ARCH_AARCH64
#elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI32
#if __MIPSEB__
#define ARCH_NATIVE		AUDIT_ARCH_MIPS
#elif __MIPSEL__
#define ARCH_NATIVE		AUDIT_ARCH_MIPSEL
#endif /* _MIPS_SIM_ABI32 */
#elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI64
#if __MIPSEB__
#define ARCH_NATIVE		AUDIT_ARCH_MIPS64
#elif __MIPSEL__
#define ARCH_NATIVE		AUDIT_ARCH_MIPSEL64
#endif /* _MIPS_SIM_ABI64 */
#elif __mips__ && _MIPS_SIM == _MIPS_SIM_NABI32
#if __MIPSEB__
#define ARCH_NATIVE		AUDIT_ARCH_MIPS64N32
#elif __MIPSEL__
#define ARCH_NATIVE		AUDIT_ARCH_MIPSEL64N32
#endif /* _MIPS_SIM_NABI32 */
#elif __PPC64__
#ifdef __BIG_ENDIAN__
#define ARCH_NATIVE		AUDIT_ARCH_PPC64
#else
#define ARCH_NATIVE		AUDIT_ARCH_PPC64LE
#endif
#elif __PPC__
#define ARCH_NATIVE		AUDIT_ARCH_PPC
#elif __s390x__ /* s390x must be checked before s390 */
#define ARCH_NATIVE		AUDIT_ARCH_S390X
#elif __s390__
#define ARCH_NATIVE		AUDIT_ARCH_S390
#else
#error the simulator code needs to know about your machine type
#endif

/* default to the native arch */
uint32_t arch = ARCH_NATIVE;

/**
 * Convert a 16-bit target integer into the host's endianess
 * @param arch the architecture token
 * @param val the 16-bit integer
 *
 * Convert the endianess of the supplied value and return it to the caller.
 *
 */
uint16_t ttoh16(uint32_t arch, uint16_t val)
{
	if (arch & __AUDIT_ARCH_LE)
		return le16toh(val);
	else
		return be16toh(val);
}

/**
 * Convert a 32-bit target integer into the host's endianess
 * @param arch the architecture token
 * @param val the 32-bit integer
 *
 * Convert the endianess of the supplied value and return it to the caller.
 *
 */
uint32_t ttoh32(uint32_t arch, uint32_t val)
{
	if (arch & __AUDIT_ARCH_LE)
		return le32toh(val);
	else
		return be32toh(val);
}

/**
 * Convert a 32-bit host integer into the target's endianess
 * @param arch the architecture token
 * @param val the 32-bit integer
 *
 * Convert the endianess of the supplied value and return it to the caller.
 *
 */
uint32_t htot32(uint32_t arch, uint32_t val)
{
	if (arch & __AUDIT_ARCH_LE)
		return htole32(val);
	else
		return htobe32(val);
}

/**
 * Convert a 64-bit host integer into the target's endianess
 * @param arch the architecture token
 * @param val the 64-bit integer
 *
 * Convert the endianess of the supplied value and return it to the caller.
 *
 */
uint64_t htot64(uint32_t arch, uint64_t val)
{
	if (arch & __AUDIT_ARCH_LE)
		return htole64(val);
	else
		return htobe64(val);
}
Commit	Line	Data
8befd5cc MG	1	/**
	2	* Tool utility functions
	3	*
	4	* Copyright (c) 2014 Red Hat <pmoore@redhat.com>
	5	* Author: Paul Moore <paul@paul-moore.com>
	6	*/
	7
	8	/*
	9	* This library is free software; you can redistribute it and/or modify it
	10	* under the terms of version 2.1 of the GNU Lesser General Public License as
	11	* published by the Free Software Foundation.
	12	*
	13	* This library is distributed in the hope that it will be useful, but WITHOUT
	14	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	15	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
	16	* for more details.
	17	*
	18	* You should have received a copy of the GNU Lesser General Public License
	19	* along with this library; if not, see <http://www.gnu.org/licenses>.
	20	*/
	21
	22	#include <errno.h>
	23	#include <stdlib.h>
	24	#include <stdio.h>
	25	#include <linux/audit.h>
	26
	27	#ifndef _BSD_SOURCE
	28	#define _BSD_SOURCE
	29	#endif
	30	#include <endian.h>
	31
	32	#include "util.h"
	33
	34	/* determine the native architecture */
	35	#if __i386__
	36	#define ARCH_NATIVE AUDIT_ARCH_I386
	37	#elif __x86_64__
	38	#ifdef __ILP32__
	39	#define ARCH_NATIVE AUDIT_ARCH_X86_64
	40	#else
	41	#define ARCH_NATIVE AUDIT_ARCH_X86_64
	42	#endif /* __ILP32__ */
	43	#elif __arm__
	44	#define ARCH_NATIVE AUDIT_ARCH_ARM
	45	#elif __aarch64__
	46	#define ARCH_NATIVE AUDIT_ARCH_AARCH64
	47	#elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI32
	48	#if __MIPSEB__
	49	#define ARCH_NATIVE AUDIT_ARCH_MIPS
	50	#elif __MIPSEL__
	51	#define ARCH_NATIVE AUDIT_ARCH_MIPSEL
	52	#endif /* _MIPS_SIM_ABI32 */
	53	#elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI64
	54	#if __MIPSEB__
	55	#define ARCH_NATIVE AUDIT_ARCH_MIPS64
	56	#elif __MIPSEL__
	57	#define ARCH_NATIVE AUDIT_ARCH_MIPSEL64
	58	#endif /* _MIPS_SIM_ABI64 */
	59	#elif __mips__ && _MIPS_SIM == _MIPS_SIM_NABI32
	60	#if __MIPSEB__
	61	#define ARCH_NATIVE AUDIT_ARCH_MIPS64N32
	62	#elif __MIPSEL__
	63	#define ARCH_NATIVE AUDIT_ARCH_MIPSEL64N32
	64	#endif /* _MIPS_SIM_NABI32 */
65	#elif __PPC64__
66	#ifdef __BIG_ENDIAN__
67	#define ARCH_NATIVE AUDIT_ARCH_PPC64
68	#else
69	#define ARCH_NATIVE AUDIT_ARCH_PPC64LE
70	#endif
71	#elif __PPC__
72	#define ARCH_NATIVE AUDIT_ARCH_PPC
73	#elif __s390x__ /* s390x must be checked before s390 */
74	#define ARCH_NATIVE AUDIT_ARCH_S390X
75	#elif __s390__
76	#define ARCH_NATIVE AUDIT_ARCH_S390
77	#else
78	#error the simulator code needs to know about your machine type
79	#endif
80
81	/* default to the native arch */
82	uint32_t arch = ARCH_NATIVE;
83
84	/**
85	* Convert a 16-bit target integer into the host's endianess
86	* @param arch the architecture token
87	* @param val the 16-bit integer
88	*
89	* Convert the endianess of the supplied value and return it to the caller.
90	*
91	*/
92	uint16_t ttoh16(uint32_t arch, uint16_t val)
93	{
94	if (arch & __AUDIT_ARCH_LE)
95	return le16toh(val);
96	else
97	return be16toh(val);
98	}
99
100	/**
101	* Convert a 32-bit target integer into the host's endianess
102	* @param arch the architecture token
103	* @param val the 32-bit integer
104	*
105	* Convert the endianess of the supplied value and return it to the caller.
106	*
107	*/
108	uint32_t ttoh32(uint32_t arch, uint32_t val)
109	{
110	if (arch & __AUDIT_ARCH_LE)
111	return le32toh(val);
112	else
113	return be32toh(val);
114	}
115
116	/**
117	* Convert a 32-bit host integer into the target's endianess
118	* @param arch the architecture token
119	* @param val the 32-bit integer
120	*
121	* Convert the endianess of the supplied value and return it to the caller.
122	*
123	*/
124	uint32_t htot32(uint32_t arch, uint32_t val)
125	{
126	if (arch & __AUDIT_ARCH_LE)
127	return htole32(val);
128	else
129	return htobe32(val);
130	}
131
132	/**
133	* Convert a 64-bit host integer into the target's endianess
134	* @param arch the architecture token
135	* @param val the 64-bit integer
136	*
137	* Convert the endianess of the supplied value and return it to the caller.
138	*
139	*/
140	uint64_t htot64(uint32_t arch, uint64_t val)
141	{
142	if (arch & __AUDIT_ARCH_LE)
143	return htole64(val);
144	else
145	return htobe64(val);
146	}