tools/testing/selftests/bpf/prog_tests/uprobe_autoattach.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2022, Oracle and/or its affiliates. */
   3
   4 #include <test_progs.h>
   5 #include "test_uprobe_autoattach.skel.h"
   6
   7 /* uprobe attach point */
   8 static noinline int autoattach_trigger_func(int arg1, int arg2, int arg3,
   9                                             int arg4, int arg5, int arg6,
  10                                             int arg7, int arg8)
  11 {
  12         asm volatile ("");
  13         return arg1 + arg2 + arg3 + arg4 + arg5 + arg6 + arg7 + arg8 + 1;
  14 }
  15
  16 void test_uprobe_autoattach(void)
  17 {
  18         const char *devnull_str = "/dev/null";
  19         struct test_uprobe_autoattach *skel;
  20         int trigger_ret;
  21         FILE *devnull;
  22
  23         skel = test_uprobe_autoattach__open_and_load();
  24         if (!ASSERT_OK_PTR(skel, "skel_open"))
  25                 return;
  26
  27         if (!ASSERT_OK(test_uprobe_autoattach__attach(skel), "skel_attach"))
  28                 goto cleanup;
  29
  30         skel->bss->test_pid = getpid();
  31
  32         /* trigger & validate uprobe & uretprobe */
  33         trigger_ret = autoattach_trigger_func(1, 2, 3, 4, 5, 6, 7, 8);
  34
  35         skel->bss->test_pid = getpid();
  36
  37         /* trigger & validate shared library u[ret]probes attached by name */
  38         devnull = fopen(devnull_str, "r");
  39
  40         ASSERT_EQ(skel->bss->uprobe_byname_parm1, 1, "check_uprobe_byname_parm1");
  41         ASSERT_EQ(skel->bss->uprobe_byname_ran, 1, "check_uprobe_byname_ran");
  42         ASSERT_EQ(skel->bss->uretprobe_byname_rc, trigger_ret, "check_uretprobe_byname_rc");
  43         ASSERT_EQ(skel->bss->uretprobe_byname_ret, trigger_ret, "check_uretprobe_byname_ret");
  44         ASSERT_EQ(skel->bss->uretprobe_byname_ran, 2, "check_uretprobe_byname_ran");
  45         ASSERT_EQ(skel->bss->uprobe_byname2_parm1, (__u64)(long)devnull_str,
  46                   "check_uprobe_byname2_parm1");
  47         ASSERT_EQ(skel->bss->uprobe_byname2_ran, 3, "check_uprobe_byname2_ran");
  48         ASSERT_EQ(skel->bss->uretprobe_byname2_rc, (__u64)(long)devnull,
  49                   "check_uretprobe_byname2_rc");
  50         ASSERT_EQ(skel->bss->uretprobe_byname2_ran, 4, "check_uretprobe_byname2_ran");
  51
  52         ASSERT_EQ(skel->bss->a[0], 1, "arg1");
  53         ASSERT_EQ(skel->bss->a[1], 2, "arg2");
  54         ASSERT_EQ(skel->bss->a[2], 3, "arg3");
  55 #if FUNC_REG_ARG_CNT > 3
  56         ASSERT_EQ(skel->bss->a[3], 4, "arg4");
  57 #endif
  58 #if FUNC_REG_ARG_CNT > 4
  59         ASSERT_EQ(skel->bss->a[4], 5, "arg5");
  60 #endif
  61 #if FUNC_REG_ARG_CNT > 5
  62         ASSERT_EQ(skel->bss->a[5], 6, "arg6");
  63 #endif
  64 #if FUNC_REG_ARG_CNT > 6
  65         ASSERT_EQ(skel->bss->a[6], 7, "arg7");
  66 #endif
  67 #if FUNC_REG_ARG_CNT > 7
  68         ASSERT_EQ(skel->bss->a[7], 8, "arg8");
  69 #endif
  70
  71         fclose(devnull);
  72 cleanup:
  73         test_uprobe_autoattach__destroy(skel);
  74 }