1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2017 Facebook
4 #include <uapi/linux/bpf.h>
5 #include <bpf/bpf_helpers.h>
7 #if !defined(__aarch64__)
8 struct syscalls_enter_open_args {
9 unsigned long long unused;
17 struct syscalls_exit_open_args {
18 unsigned long long unused;
23 struct syscalls_enter_open_at_args {
24 unsigned long long unused;
33 __uint(type, BPF_MAP_TYPE_ARRAY);
36 __uint(max_entries, 1);
37 } enter_open_map SEC(".maps");
40 __uint(type, BPF_MAP_TYPE_ARRAY);
43 __uint(max_entries, 1);
44 } exit_open_map SEC(".maps");
46 static __always_inline void count(void *map)
49 u32 *value, init_val = 1;
51 value = bpf_map_lookup_elem(map, &key);
55 bpf_map_update_elem(map, &key, &init_val, BPF_NOEXIST);
58 #if !defined(__aarch64__)
59 SEC("tracepoint/syscalls/sys_enter_open")
60 int trace_enter_open(struct syscalls_enter_open_args *ctx)
62 count(&enter_open_map);
67 SEC("tracepoint/syscalls/sys_enter_openat")
68 int trace_enter_open_at(struct syscalls_enter_open_at_args *ctx)
70 count(&enter_open_map);
74 SEC("tracepoint/syscalls/sys_enter_openat2")
75 int trace_enter_open_at2(struct syscalls_enter_open_at_args *ctx)
77 count(&enter_open_map);
81 #if !defined(__aarch64__)
82 SEC("tracepoint/syscalls/sys_exit_open")
83 int trace_enter_exit(struct syscalls_exit_open_args *ctx)
85 count(&exit_open_map);
90 SEC("tracepoint/syscalls/sys_exit_openat")
91 int trace_enter_exit_at(struct syscalls_exit_open_args *ctx)
93 count(&exit_open_map);
97 SEC("tracepoint/syscalls/sys_exit_openat2")
98 int trace_enter_exit_at2(struct syscalls_exit_open_args *ctx)
100 count(&exit_open_map);