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34 lines
785 B
C
34 lines
785 B
C
// SPDX-License-Identifier: GPL-2.0
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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struct event {
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__u32 pid;
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__u32 uid;
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__u64 ts;
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};
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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(int));
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__uint(value_size, sizeof(int));
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} events SEC(".maps");
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SEC("tp/syscalls/sys_enter_setuid")
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int handle_setuid_entry(struct trace_event_raw_sys_enter *ctx) {
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struct event data = {};
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struct blk_integrity_iter it = {};
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// Extract UID from the syscall arguments
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data.uid = (unsigned int)ctx->args[0];
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data.ts = bpf_ktime_get_ns();
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data.pid = bpf_get_current_pid_tgid() >> 32;
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bpf_perf_event_output(ctx, &events, BPF_F_CURRENT_CPU, &data, sizeof(data));
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return 0;
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}
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char LICENSE[] SEC("license") = "GPL";
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