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