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