/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/compiler.h>
#include <linux/types.h>
#include <unistd.h>
#include "../tests.h"
/* This workload was initially added to test enum augmentation with BTF in perf
* trace because its the only syscall that has an enum argument. Since it is
* a recent addition to the Linux kernel (at the time of the introduction of this
* 'perf test' workload) we just add the required types and defines here instead
* of including linux/landlock, that isn't available in older systems.
*
* We are not interested in the the result of the syscall, just in intercepting
* its arguments.
*/
#ifndef __NR_landlock_add_rule
#define __NR_landlock_add_rule 445
#endif
#ifndef LANDLOCK_ACCESS_FS_READ_FILE
#define LANDLOCK_ACCESS_FS_READ_FILE (1ULL << 2)
#define LANDLOCK_RULE_PATH_BENEATH 1
struct landlock_path_beneath_attr {
__u64 allowed_access;
__s32 parent_fd;
};
#endif
#ifndef LANDLOCK_ACCESS_NET_CONNECT_TCP
#define LANDLOCK_ACCESS_NET_CONNECT_TCP (1ULL << 1)
#define LANDLOCK_RULE_NET_PORT 2
struct landlock_net_port_attr {
__u64 allowed_access;
__u64 port;
};
#endif
static int landlock(int argc __maybe_unused, const char **argv __maybe_unused)
{
int fd = 11, flags = 45;
struct landlock_path_beneath_attr path_beneath_attr = {
.allowed_access = LANDLOCK_ACCESS_FS_READ_FILE,
.parent_fd = 14,
};
struct landlock_net_port_attr net_port_attr = {
.port = 19,
.allowed_access = LANDLOCK_ACCESS_NET_CONNECT_TCP,
};
syscall(__NR_landlock_add_rule, fd, LANDLOCK_RULE_PATH_BENEATH,
&path_beneath_attr, flags);
syscall(__NR_landlock_add_rule, fd, LANDLOCK_RULE_NET_PORT,
&net_port_attr, flags);
return 0;
}
DEFINE_WORKLOAD(landlock);