]> Git Repo - J-linux.git/blob - tools/testing/selftests/bpf/prog_tests/stack_var_off.c
Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / tools / testing / selftests / bpf / prog_tests / stack_var_off.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <test_progs.h>
3 #include "test_stack_var_off.skel.h"
4
5 /* Test read and writes to the stack performed with offsets that are not
6  * statically known.
7  */
8 void test_stack_var_off(void)
9 {
10         int duration = 0;
11         struct test_stack_var_off *skel;
12
13         skel = test_stack_var_off__open_and_load();
14         if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
15                 return;
16
17         /* Give pid to bpf prog so it doesn't trigger for anyone else. */
18         skel->bss->test_pid = getpid();
19         /* Initialize the probe's input. */
20         skel->bss->input[0] = 2;
21         skel->bss->input[1] = 42;  /* This will be returned in probe_res. */
22
23         if (!ASSERT_OK(test_stack_var_off__attach(skel), "skel_attach"))
24                 goto cleanup;
25
26         /* Trigger probe. */
27         usleep(1);
28
29         if (CHECK(skel->bss->probe_res != 42, "check_probe_res",
30                   "wrong probe res: %d\n", skel->bss->probe_res))
31                 goto cleanup;
32
33 cleanup:
34         test_stack_var_off__destroy(skel);
35 }
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