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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 / linked_funcs.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2021 Facebook */
3
4 #include <test_progs.h>
5 #include <sys/syscall.h>
6 #include "linked_funcs.skel.h"
7
8 void test_linked_funcs(void)
9 {
10         int err;
11         struct linked_funcs *skel;
12
13         skel = linked_funcs__open();
14         if (!ASSERT_OK_PTR(skel, "skel_open"))
15                 return;
16
17         /* handler1 and handler2 are marked as SEC("?raw_tp/sys_enter") and
18          * are set to not autoload by default
19          */
20         bpf_program__set_autoload(skel->progs.handler1, true);
21         bpf_program__set_autoload(skel->progs.handler2, true);
22
23         skel->rodata->my_tid = sys_gettid();
24         skel->bss->syscall_id = SYS_getpgid;
25
26         err = linked_funcs__load(skel);
27         if (!ASSERT_OK(err, "skel_load"))
28                 goto cleanup;
29
30         err = linked_funcs__attach(skel);
31         if (!ASSERT_OK(err, "skel_attach"))
32                 goto cleanup;
33
34         /* trigger */
35         syscall(SYS_getpgid);
36
37         ASSERT_EQ(skel->bss->output_val1, 2000 + 2000, "output_val1");
38         ASSERT_EQ(skel->bss->output_ctx1, SYS_getpgid, "output_ctx1");
39         ASSERT_EQ(skel->bss->output_weak1, 42, "output_weak1");
40
41         ASSERT_EQ(skel->bss->output_val2, 2 * 1000 + 2 * (2 * 1000), "output_val2");
42         ASSERT_EQ(skel->bss->output_ctx2, SYS_getpgid, "output_ctx2");
43         /* output_weak2 should never be updated */
44         ASSERT_EQ(skel->bss->output_weak2, 0, "output_weak2");
45
46 cleanup:
47         linked_funcs__destroy(skel);
48 }
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