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37 lines
959 B
C
37 lines
959 B
C
// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_core_read.h>
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#include "execsnoop.h"
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struct {
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__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
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__uint(key_size, sizeof(u32));
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__uint(value_size, sizeof(u32));
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} events SEC(".maps");
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SEC("tracepoint/syscalls/sys_enter_execve")
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int tracepoint__syscalls__sys_enter_execve(struct trace_event_raw_sys_enter* ctx)
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{
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u64 id;
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pid_t pid, tgid;
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struct event event;
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struct task_struct *task;
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uid_t uid = (u32)bpf_get_current_uid_gid();
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id = bpf_get_current_pid_tgid();
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pid = (pid_t)id;
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tgid = id >> 32;
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event.pid = tgid;
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event.uid = uid;
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task = (struct task_struct*)bpf_get_current_task();
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event.ppid = BPF_CORE_READ(task, real_parent, tgid);
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bpf_get_current_comm(&event.comm, sizeof(event.comm));
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bpf_perf_event_output(ctx, &events, BPF_F_CURRENT_CPU, &event, sizeof(event));
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return 0;
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}
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char LICENSE[] SEC("license") = "GPL";
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