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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:09:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 17:09:30 +0000 |
commit | 81749f1fe87e489c4e2e7408a0fae9370c3810b3 (patch) | |
tree | 2d1345a5762855b6577495d90ac134c4e92d7ff8 /src/arch-mips.c | |
parent | Initial commit. (diff) | |
download | libseccomp-upstream.tar.xz libseccomp-upstream.zip |
Adding upstream version 2.5.5.upstream/2.5.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/arch-mips.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/arch-mips.c b/src/arch-mips.c new file mode 100644 index 0000000..5a12a11 --- /dev/null +++ b/src/arch-mips.c @@ -0,0 +1,108 @@ +/** + * 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, +}; |