Linux Perf
kmod-path.c
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1 // SPDX-License-Identifier: GPL-2.0
2 #include <stdbool.h>
3 #include <stdlib.h>
4 #include "tests.h"
5 #include "dso.h"
6 #include "debug.h"
7 
8 static int test(const char *path, bool alloc_name, bool alloc_ext,
9  bool kmod, bool comp, const char *name, const char *ext)
10 {
11  struct kmod_path m;
12 
13  memset(&m, 0x0, sizeof(m));
14 
15  TEST_ASSERT_VAL("kmod_path__parse",
16  !__kmod_path__parse(&m, path, alloc_name, alloc_ext));
17 
18  pr_debug("%s - alloc name %d, alloc ext %d, kmod %d, comp %d, name '%s', ext '%s'\n",
19  path, alloc_name, alloc_ext, m.kmod, m.comp, m.name, m.ext);
20 
21  TEST_ASSERT_VAL("wrong kmod", m.kmod == kmod);
22  TEST_ASSERT_VAL("wrong comp", m.comp == comp);
23 
24  if (ext)
25  TEST_ASSERT_VAL("wrong ext", m.ext && !strcmp(ext, m.ext));
26  else
27  TEST_ASSERT_VAL("wrong ext", !m.ext);
28 
29  if (name)
30  TEST_ASSERT_VAL("wrong name", m.name && !strcmp(name, m.name));
31  else
32  TEST_ASSERT_VAL("wrong name", !m.name);
33 
34  free(m.name);
35  free(m.ext);
36  return 0;
37 }
38 
39 static int test_is_kernel_module(const char *path, int cpumode, bool expect)
40 {
41  TEST_ASSERT_VAL("is_kernel_module",
42  (!!is_kernel_module(path, cpumode)) == (!!expect));
43  pr_debug("%s (cpumode: %d) - is_kernel_module: %s\n",
44  path, cpumode, expect ? "true" : "false");
45  return 0;
46 }
47 
48 #define T(path, an, ae, k, c, n, e) \
49  TEST_ASSERT_VAL("failed", !test(path, an, ae, k, c, n, e))
50 
51 #define M(path, c, e) \
52  TEST_ASSERT_VAL("failed", !test_is_kernel_module(path, c, e))
53 
54 int test__kmod_path__parse(struct test *t __maybe_unused, int subtest __maybe_unused)
55 {
56  /* path alloc_name alloc_ext kmod comp name ext */
57  T("/xxxx/xxxx/x-x.ko", true , true , true, false, "[x_x]", NULL);
58  T("/xxxx/xxxx/x-x.ko", false , true , true, false, NULL , NULL);
59  T("/xxxx/xxxx/x-x.ko", true , false , true, false, "[x_x]", NULL);
60  T("/xxxx/xxxx/x-x.ko", false , false , true, false, NULL , NULL);
61  M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
62  M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_KERNEL, true);
63  M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_USER, false);
64 
65 #ifdef HAVE_ZLIB_SUPPORT
66  /* path alloc_name alloc_ext kmod comp name ext */
67  T("/xxxx/xxxx/x.ko.gz", true , true , true, true, "[x]", "gz");
68  T("/xxxx/xxxx/x.ko.gz", false , true , true, true, NULL , "gz");
69  T("/xxxx/xxxx/x.ko.gz", true , false , true, true, "[x]", NULL);
70  T("/xxxx/xxxx/x.ko.gz", false , false , true, true, NULL , NULL);
71  M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
72  M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
73  M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_USER, false);
74 
75  /* path alloc_name alloc_ext kmod comp name ext */
76  T("/xxxx/xxxx/x.gz", true , true , false, true, "x.gz" ,"gz");
77  T("/xxxx/xxxx/x.gz", false , true , false, true, NULL ,"gz");
78  T("/xxxx/xxxx/x.gz", true , false , false, true, "x.gz" , NULL);
79  T("/xxxx/xxxx/x.gz", false , false , false, true, NULL , NULL);
80  M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
81  M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_KERNEL, false);
82  M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_USER, false);
83 
84  /* path alloc_name alloc_ext kmod comp name ext */
85  T("x.gz", true , true , false, true, "x.gz", "gz");
86  T("x.gz", false , true , false, true, NULL , "gz");
87  T("x.gz", true , false , false, true, "x.gz", NULL);
88  T("x.gz", false , false , false, true, NULL , NULL);
89  M("x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
90  M("x.gz", PERF_RECORD_MISC_KERNEL, false);
91  M("x.gz", PERF_RECORD_MISC_USER, false);
92 
93  /* path alloc_name alloc_ext kmod comp name ext */
94  T("x.ko.gz", true , true , true, true, "[x]", "gz");
95  T("x.ko.gz", false , true , true, true, NULL , "gz");
96  T("x.ko.gz", true , false , true, true, "[x]", NULL);
97  T("x.ko.gz", false , false , true, true, NULL , NULL);
98  M("x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
99  M("x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
100  M("x.ko.gz", PERF_RECORD_MISC_USER, false);
101 #endif
102 
103  /* path alloc_name alloc_ext kmod comp name ext */
104  T("[test_module]", true , true , true, false, "[test_module]", NULL);
105  T("[test_module]", false , true , true, false, NULL , NULL);
106  T("[test_module]", true , false , true, false, "[test_module]", NULL);
107  T("[test_module]", false , false , true, false, NULL , NULL);
108  M("[test_module]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
109  M("[test_module]", PERF_RECORD_MISC_KERNEL, true);
110  M("[test_module]", PERF_RECORD_MISC_USER, false);
111 
112  /* path alloc_name alloc_ext kmod comp name ext */
113  T("[test.module]", true , true , true, false, "[test.module]", NULL);
114  T("[test.module]", false , true , true, false, NULL , NULL);
115  T("[test.module]", true , false , true, false, "[test.module]", NULL);
116  T("[test.module]", false , false , true, false, NULL , NULL);
117  M("[test.module]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
118  M("[test.module]", PERF_RECORD_MISC_KERNEL, true);
119  M("[test.module]", PERF_RECORD_MISC_USER, false);
120 
121  /* path alloc_name alloc_ext kmod comp name ext */
122  T("[vdso]", true , true , false, false, "[vdso]", NULL);
123  T("[vdso]", false , true , false, false, NULL , NULL);
124  T("[vdso]", true , false , false, false, "[vdso]", NULL);
125  T("[vdso]", false , false , false, false, NULL , NULL);
126  M("[vdso]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
127  M("[vdso]", PERF_RECORD_MISC_KERNEL, false);
128  M("[vdso]", PERF_RECORD_MISC_USER, false);
129 
130  T("[vdso32]", true , true , false, false, "[vdso32]", NULL);
131  T("[vdso32]", false , true , false, false, NULL , NULL);
132  T("[vdso32]", true , false , false, false, "[vdso32]", NULL);
133  T("[vdso32]", false , false , false, false, NULL , NULL);
134  M("[vdso32]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
135  M("[vdso32]", PERF_RECORD_MISC_KERNEL, false);
136  M("[vdso32]", PERF_RECORD_MISC_USER, false);
137 
138  T("[vdsox32]", true , true , false, false, "[vdsox32]", NULL);
139  T("[vdsox32]", false , true , false, false, NULL , NULL);
140  T("[vdsox32]", true , false , false, false, "[vdsox32]", NULL);
141  T("[vdsox32]", false , false , false, false, NULL , NULL);
142  M("[vdsox32]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
143  M("[vdsox32]", PERF_RECORD_MISC_KERNEL, false);
144  M("[vdsox32]", PERF_RECORD_MISC_USER, false);
145 
146  /* path alloc_name alloc_ext kmod comp name ext */
147  T("[vsyscall]", true , true , false, false, "[vsyscall]", NULL);
148  T("[vsyscall]", false , true , false, false, NULL , NULL);
149  T("[vsyscall]", true , false , false, false, "[vsyscall]", NULL);
150  T("[vsyscall]", false , false , false, false, NULL , NULL);
151  M("[vsyscall]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
152  M("[vsyscall]", PERF_RECORD_MISC_KERNEL, false);
153  M("[vsyscall]", PERF_RECORD_MISC_USER, false);
154 
155  /* path alloc_name alloc_ext kmod comp name ext */
156  T("[kernel.kallsyms]", true , true , false, false, "[kernel.kallsyms]", NULL);
157  T("[kernel.kallsyms]", false , true , false, false, NULL , NULL);
158  T("[kernel.kallsyms]", true , false , false, false, "[kernel.kallsyms]", NULL);
159  T("[kernel.kallsyms]", false , false , false, false, NULL , NULL);
160  M("[kernel.kallsyms]", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
161  M("[kernel.kallsyms]", PERF_RECORD_MISC_KERNEL, false);
162  M("[kernel.kallsyms]", PERF_RECORD_MISC_USER, false);
163 
164  return 0;
165 }
M
#define M(path, c, e)
Definition: kmod-path.c:51
TEST_ASSERT_VAL
#define TEST_ASSERT_VAL(text, cond)
Definition: tests.h:7
memset
x86 movsq based memset() in arch/x86/lib/memset_64.S") MEMSET_FN(memset_erms
kmod_path::ext
char * ext
Definition: dso.h:266
__kmod_path__parse
int __kmod_path__parse(struct kmod_path *m, const char *path, bool alloc_name, bool alloc_ext)
Definition: dso.c:334
is_kernel_module
bool is_kernel_module(const char *pathname, int cpumode)
Definition: dso.c:216
name
const char * name
Definition: builtin-script.c:1228
pr_debug
#define pr_debug(fmt,...)
Definition: json.h:27
kmod_path
Definition: dso.h:264
test_is_kernel_module
static int test_is_kernel_module(const char *path, int cpumode, bool expect)
Definition: kmod-path.c:39
kmod_path::comp
bool comp
Definition: dso.h:267
test
static int test(const char *path, bool alloc_name, bool alloc_ext, bool kmod, bool comp, const char *name, const char *ext)
Definition: kmod-path.c:8
T
#define T(path, an, ae, k, c, n, e)
Definition: kmod-path.c:48
test__kmod_path__parse
int test__kmod_path__parse(struct test *t __maybe_unused, int subtest __maybe_unused)
Definition: kmod-path.c:54
kmod_path::name
char * name
Definition: dso.h:265
test
Definition: tests.h:30
free
void free(void *)
comp
static int comp(const void *a, const void *b)
Definition: code-reading.c:430
kmod_path::kmod
bool kmod
Definition: dso.h:268