// SPDX-License-Identifier: GPL-2.0 #include <vmlinux.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> #include <stdbool.h> char _license[] SEC("license") = "GPL"; int pid = 0; __u64 test_uprobe_1_result = 0; __u64 test_uprobe_2_result = 0; __u64 test_uprobe_3_result = 0; static int check_cookie(struct pt_regs *ctx, __u64 val, __u64 *result) { __u64 *cookie; if (bpf_get_current_pid_tgid() >> 32 != pid) return 1; cookie = bpf_session_cookie(ctx); if (bpf_session_is_return(ctx)) *result = *cookie == val ? val : 0; else *cookie = val; return 0; } SEC("uprobe.session//proc/self/exe:uprobe_multi_func_1") int uprobe_1(struct pt_regs *ctx) { return check_cookie(ctx, 1, &test_uprobe_1_result); } SEC("uprobe.session//proc/self/exe:uprobe_multi_func_2") int uprobe_2(struct pt_regs *ctx) { return check_cookie(ctx, 2, &test_uprobe_2_result); } SEC("uprobe.session//proc/self/exe:uprobe_multi_func_3") int uprobe_3(struct pt_regs *ctx) { return check_cookie(ctx, 3, &test_uprobe_3_result); }