1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 Facebook */ 3 #include <linux/bpf.h> 4 #include <bpf/bpf_helpers.h> 5 #include <bpf/bpf_tracing.h> 6 7 char _license[] SEC("license") = "GPL"; 8 9 __u64 test1_result = 0; 10 SEC("fexit/bpf_fentry_test1") 11 int BPF_PROG(test1, int a, int ret) 12 { 13 test1_result = a == 1 && ret == 2; 14 return 0; 15 } 16 17 __u64 test2_result = 0; 18 SEC("fexit/bpf_fentry_test2") 19 int BPF_PROG(test2, int a, __u64 b, int ret) 20 { 21 test2_result = a == 2 && b == 3 && ret == 5; 22 return 0; 23 } 24 25 __u64 test3_result = 0; 26 SEC("fexit/bpf_fentry_test3") 27 int BPF_PROG(test3, char a, int b, __u64 c, int ret) 28 { 29 test3_result = a == 4 && b == 5 && c == 6 && ret == 15; 30 return 0; 31 } 32 33 __u64 test4_result = 0; 34 SEC("fexit/bpf_fentry_test4") 35 int BPF_PROG(test4, void *a, char b, int c, __u64 d, int ret) 36 { 37 test4_result = a == (void *)7 && b == 8 && c == 9 && d == 10 && 38 ret == 34; 39 return 0; 40 } 41 42 __u64 test5_result = 0; 43 SEC("fexit/bpf_fentry_test5") 44 int BPF_PROG(test5, __u64 a, void *b, short c, int d, __u64 e, int ret) 45 { 46 test5_result = a == 11 && b == (void *)12 && c == 13 && d == 14 && 47 e == 15 && ret == 65; 48 return 0; 49 } 50 51 __u64 test6_result = 0; 52 SEC("fexit/bpf_fentry_test6") 53 int BPF_PROG(test6, __u64 a, void *b, short c, int d, void *e, __u64 f, int ret) 54 { 55 test6_result = a == 16 && b == (void *)17 && c == 18 && d == 19 && 56 e == (void *)20 && f == 21 && ret == 111; 57 return 0; 58 } 59 60 struct bpf_fentry_test_t { 61 struct bpf_fentry_test *a; 62 }; 63 64 __u64 test7_result = 0; 65 SEC("fexit/bpf_fentry_test7") 66 int BPF_PROG(test7, struct bpf_fentry_test_t *arg) 67 { 68 if (arg == 0) 69 test7_result = 1; 70 return 0; 71 } 72 73 __u64 test8_result = 0; 74 SEC("fexit/bpf_fentry_test8") 75 int BPF_PROG(test8, struct bpf_fentry_test_t *arg) 76 { 77 if (arg->a == 0) 78 test8_result = 1; 79 return 0; 80 } 81