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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <seccomp.h>
#include <stdbool.h>
#include <stdint.h>
#include "set.h"
const char* seccomp_arch_to_string(uint32_t c);
int seccomp_arch_from_string(const char *n, uint32_t *ret);
int seccomp_init_for_arch(scmp_filter_ctx *ret, uint32_t arch, uint32_t default_action);
bool is_seccomp_available(void);
typedef struct SyscallFilterSet {
const char *name;
const char *help;
const char *value;
} SyscallFilterSet;
enum {
/* Please leave DEFAULT first, but sort the rest alphabetically */
SYSCALL_FILTER_SET_DEFAULT,
SYSCALL_FILTER_SET_AIO,
SYSCALL_FILTER_SET_BASIC_IO,
SYSCALL_FILTER_SET_CHOWN,
SYSCALL_FILTER_SET_CLOCK,
SYSCALL_FILTER_SET_CPU_EMULATION,
SYSCALL_FILTER_SET_DEBUG,
SYSCALL_FILTER_SET_FILE_SYSTEM,
SYSCALL_FILTER_SET_IO_EVENT,
SYSCALL_FILTER_SET_IPC,
SYSCALL_FILTER_SET_KEYRING,
SYSCALL_FILTER_SET_MEMLOCK,
SYSCALL_FILTER_SET_MODULE,
SYSCALL_FILTER_SET_MOUNT,
SYSCALL_FILTER_SET_NETWORK_IO,
SYSCALL_FILTER_SET_OBSOLETE,
SYSCALL_FILTER_SET_PRIVILEGED,
SYSCALL_FILTER_SET_PROCESS,
SYSCALL_FILTER_SET_RAW_IO,
SYSCALL_FILTER_SET_REBOOT,
SYSCALL_FILTER_SET_RESOURCES,
SYSCALL_FILTER_SET_SETUID,
SYSCALL_FILTER_SET_SIGNAL,
SYSCALL_FILTER_SET_SWAP,
SYSCALL_FILTER_SET_SYNC,
SYSCALL_FILTER_SET_TIMER,
_SYSCALL_FILTER_SET_MAX
};
extern const SyscallFilterSet syscall_filter_sets[];
const SyscallFilterSet *syscall_filter_set_find(const char *name);
int seccomp_filter_set_add(Hashmap *s, bool b, const SyscallFilterSet *set);
int seccomp_add_syscall_filter_item(scmp_filter_ctx *ctx, const char *name, uint32_t action, char **exclude);
int seccomp_load_syscall_filter_set(uint32_t default_action, const SyscallFilterSet *set, uint32_t action);
int seccomp_load_syscall_filter_set_raw(uint32_t default_action, Hashmap* set, uint32_t action);
int seccomp_parse_syscall_filter_internal(
bool invert, const char *name, int errno_num, Hashmap *filter, bool whitelist,
bool warn, const char *unit, const char *filename, unsigned line);
static inline int seccomp_parse_syscall_filter_and_warn(
bool invert, const char *name, int errno_num, Hashmap *filter, bool whitelist,
const char *unit, const char *filename, unsigned line) {
assert(unit);
assert(filename);
return seccomp_parse_syscall_filter_internal(invert, name, errno_num, filter, whitelist, true, unit, filename, line);
}
static inline int seccomp_parse_syscall_filter(
bool invert, const char *name, int errno_num, Hashmap *filter, bool whitelist) {
return seccomp_parse_syscall_filter_internal(invert, name, errno_num, filter, whitelist, false, NULL, NULL, 0);
}
int seccomp_restrict_archs(Set *archs);
int seccomp_restrict_namespaces(unsigned long retain);
int seccomp_protect_sysctl(void);
int seccomp_restrict_address_families(Set *address_families, bool whitelist);
int seccomp_restrict_realtime(void);
int seccomp_memory_deny_write_execute(void);
int seccomp_lock_personality(unsigned long personality);
extern const uint32_t seccomp_local_archs[];
#define SECCOMP_FOREACH_LOCAL_ARCH(arch) \
for (unsigned _i = ({ (arch) = seccomp_local_archs[0]; 0; }); \
seccomp_local_archs[_i] != (uint32_t) -1; \
(arch) = seccomp_local_archs[++_i])
DEFINE_TRIVIAL_CLEANUP_FUNC(scmp_filter_ctx, seccomp_release);
int parse_syscall_archs(char **l, Set **archs);
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