diff options
Diffstat (limited to '')
-rw-r--r-- | tools/testing/selftests/bpf/progs/get_func_ip_test.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c new file mode 100644 index 000000000..8559e698b --- /dev/null +++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include <stdbool.h> + +char _license[] SEC("license") = "GPL"; + +extern const void bpf_fentry_test1 __ksym; +extern const void bpf_fentry_test2 __ksym; +extern const void bpf_fentry_test3 __ksym; +extern const void bpf_fentry_test4 __ksym; +extern const void bpf_modify_return_test __ksym; +extern const void bpf_fentry_test6 __ksym; +extern const void bpf_fentry_test7 __ksym; + +extern bool CONFIG_X86_KERNEL_IBT __kconfig __weak; + +/* This function is here to have CONFIG_X86_KERNEL_IBT + * used and added to object BTF. + */ +int unused(void) +{ + return CONFIG_X86_KERNEL_IBT ? 0 : 1; +} + +__u64 test1_result = 0; +SEC("fentry/bpf_fentry_test1") +int BPF_PROG(test1, int a) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test1_result = (const void *) addr == &bpf_fentry_test1; + return 0; +} + +__u64 test2_result = 0; +SEC("fexit/bpf_fentry_test2") +int BPF_PROG(test2, int a) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test2_result = (const void *) addr == &bpf_fentry_test2; + return 0; +} + +__u64 test3_result = 0; +SEC("kprobe/bpf_fentry_test3") +int test3(struct pt_regs *ctx) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test3_result = (const void *) addr == &bpf_fentry_test3; + return 0; +} + +__u64 test4_result = 0; +SEC("kretprobe/bpf_fentry_test4") +int BPF_KRETPROBE(test4) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test4_result = (const void *) addr == &bpf_fentry_test4; + return 0; +} + +__u64 test5_result = 0; +SEC("fmod_ret/bpf_modify_return_test") +int BPF_PROG(test5, int a, int *b, int ret) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test5_result = (const void *) addr == &bpf_modify_return_test; + return ret; +} + +__u64 test6_result = 0; +SEC("?kprobe") +int test6(struct pt_regs *ctx) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test6_result = (const void *) addr == 0; + return 0; +} |