e3f9bc35ea
Allow to specify decimal offset in SEC macro, like:
SEC("kprobe/bpf_fentry_test7+5")
Add selftest for that.
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/bpf/20210721215810.889975-3-jolsa@kernel.org
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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char _license[] SEC("license") = "GPL";
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extern const void bpf_fentry_test1 __ksym;
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extern const void bpf_fentry_test2 __ksym;
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extern const void bpf_fentry_test3 __ksym;
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extern const void bpf_fentry_test4 __ksym;
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extern const void bpf_modify_return_test __ksym;
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extern const void bpf_fentry_test6 __ksym;
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extern const void bpf_fentry_test7 __ksym;
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__u64 test1_result = 0;
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SEC("fentry/bpf_fentry_test1")
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int BPF_PROG(test1, int a)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test1_result = (const void *) addr == &bpf_fentry_test1;
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return 0;
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}
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__u64 test2_result = 0;
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SEC("fexit/bpf_fentry_test2")
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int BPF_PROG(test2, int a)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test2_result = (const void *) addr == &bpf_fentry_test2;
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return 0;
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}
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__u64 test3_result = 0;
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SEC("kprobe/bpf_fentry_test3")
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int test3(struct pt_regs *ctx)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test3_result = (const void *) addr == &bpf_fentry_test3;
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return 0;
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}
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__u64 test4_result = 0;
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SEC("kretprobe/bpf_fentry_test4")
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int BPF_KRETPROBE(test4)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test4_result = (const void *) addr == &bpf_fentry_test4;
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return 0;
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}
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__u64 test5_result = 0;
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SEC("fmod_ret/bpf_modify_return_test")
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int BPF_PROG(test5, int a, int *b, int ret)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test5_result = (const void *) addr == &bpf_modify_return_test;
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return ret;
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}
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__u64 test6_result = 0;
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SEC("kprobe/bpf_fentry_test6+0x5")
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int test6(struct pt_regs *ctx)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test6_result = (const void *) addr == &bpf_fentry_test6 + 5;
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return 0;
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}
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__u64 test7_result = 0;
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SEC("kprobe/bpf_fentry_test7+5")
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int test7(struct pt_regs *ctx)
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{
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__u64 addr = bpf_get_func_ip(ctx);
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test7_result = (const void *) addr == &bpf_fentry_test7 + 5;
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return 0;
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}
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