diff options
Diffstat (limited to 'tools/perf/examples/bpf/augmented_syscalls.c')
| -rw-r--r-- | tools/perf/examples/bpf/augmented_syscalls.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/perf/examples/bpf/augmented_syscalls.c b/tools/perf/examples/bpf/augmented_syscalls.c index 93960e891478..154379463c95 100644 --- a/tools/perf/examples/bpf/augmented_syscalls.c +++ b/tools/perf/examples/bpf/augmented_syscalls.c @@ -61,4 +61,31 @@ int syscall_enter(openat)(struct syscall_enter_openat_args *args) return 0; } +struct syscall_enter_open_args { + unsigned long long common_tp_fields; + long syscall_nr; + char *filename_ptr; + long flags; + long mode; +}; + +struct augmented_enter_open_args { + struct syscall_enter_open_args args; + struct augmented_filename filename; +}; + +int syscall_enter(open)(struct syscall_enter_open_args *args) +{ + struct augmented_enter_open_args augmented_args = { .filename.reserved = 0, }; + + probe_read(&augmented_args.args, sizeof(augmented_args.args), args); + augmented_args.filename.size = probe_read_str(&augmented_args.filename.value, + sizeof(augmented_args.filename.value), + args->filename_ptr); + perf_event_output(args, &__augmented_syscalls__, BPF_F_CURRENT_CPU, + &augmented_args, + sizeof(augmented_args) - sizeof(augmented_args.filename.value) + augmented_args.filename.size); + return 0; +} + license(GPL); |