| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | |
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| 3 | #include "vmlinux.h" |
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| 4 | #include <bpf/bpf_helpers.h> |
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| 5 | #include <bpf/bpf_tracing.h> |
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| 6 | |
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| 7 | struct { |
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| 8 | __uint(type, BPF_MAP_TYPE_ARRAY); |
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| 9 | __uint(max_entries, 8); |
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| 10 | __type(key, __u32); |
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| 11 | __type(value, __u64); |
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| 12 | } test_array SEC(".maps" ); |
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| 13 | |
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| 14 | unsigned int triggered; |
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| 15 | |
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| 16 | static __u64 test_cb(struct bpf_map *map, __u32 *key, __u64 *val, void *data) |
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| 17 | { |
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| 18 | return 1; |
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| 19 | } |
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| 20 | |
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| 21 | SEC("fexit/bpf_testmod_return_ptr" ) |
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| 22 | int BPF_PROG(handle_fexit_ret_subprogs, int arg, struct file *ret) |
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| 23 | { |
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| 24 | *(volatile long *)ret; |
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| 25 | *(volatile int *)&ret->f_mode; |
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| 26 | bpf_for_each_map_elem(&test_array, test_cb, NULL, 0); |
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| 27 | triggered++; |
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| 28 | return 0; |
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| 29 | } |
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| 30 | |
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| 31 | SEC("fexit/bpf_testmod_return_ptr" ) |
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| 32 | int BPF_PROG(handle_fexit_ret_subprogs2, int arg, struct file *ret) |
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| 33 | { |
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| 34 | *(volatile long *)ret; |
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| 35 | *(volatile int *)&ret->f_mode; |
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| 36 | bpf_for_each_map_elem(&test_array, test_cb, NULL, 0); |
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| 37 | triggered++; |
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| 38 | return 0; |
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| 39 | } |
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| 40 | |
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| 41 | SEC("fexit/bpf_testmod_return_ptr" ) |
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| 42 | int BPF_PROG(handle_fexit_ret_subprogs3, int arg, struct file *ret) |
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| 43 | { |
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| 44 | *(volatile long *)ret; |
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| 45 | *(volatile int *)&ret->f_mode; |
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| 46 | bpf_for_each_map_elem(&test_array, test_cb, NULL, 0); |
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| 47 | triggered++; |
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| 48 | return 0; |
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| 49 | } |
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| 50 | |
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| 51 | char _license[] SEC("license" ) = "GPL" ; |
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| 52 | |
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