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Diffstat (limited to 'tools/util.c')
| -rw-r--r-- | tools/util.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/tools/util.c b/tools/util.c new file mode 100644 index 0000000..5687b30 --- /dev/null +++ b/tools/util.c @@ -0,0 +1,152 @@ +/** + * 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 __hppa64__ +#define ARCH_NATIVE AUDIT_ARCH_PARISC64 +#elif __hppa__ +#define ARCH_NATIVE AUDIT_ARCH_PARISC +#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 +#elif __riscv && __riscv_xlen == 64 +#define ARCH_NATIVE AUDIT_ARCH_RISCV64 +#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_token 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_token, uint16_t val) +{ + if (arch_token & __AUDIT_ARCH_LE) + return le16toh(val); + else + return be16toh(val); +} + +/** + * Convert a 32-bit target integer into the host's endianess + * @param arch_token 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_token, uint32_t val) +{ + if (arch_token & __AUDIT_ARCH_LE) + return le32toh(val); + else + return be32toh(val); +} + +/** + * Convert a 32-bit host integer into the target's endianess + * @param arch_token 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_token, uint32_t val) +{ + if (arch_token & __AUDIT_ARCH_LE) + return htole32(val); + else + return htobe32(val); +} + +/** + * Convert a 64-bit host integer into the target's endianess + * @param arch_token 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_token, uint64_t val) +{ + if (arch_token & __AUDIT_ARCH_LE) + return htole64(val); + else + return htobe64(val); +} |