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trace: Share common implementation for TEST_FAIL and TEST_ALLOC_FAIL

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Get rid of more or less duplicated implementation of backtrace matching
for the two testing failure cases.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
This commit is contained in:
Benjamin Berg 2023-11-21 01:51:48 +02:00 committed by Jouni Malinen
parent 7d901dc7e7
commit 5545d995b3
2 changed files with 24 additions and 113 deletions
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4
src/utils/os.h
View file

@ -667,8 +667,8 @@ int os_exec(const char *program, const char *arg, int wait_completion);
#if defined(WPA_TRACE_BFD) && defined(CONFIG_TESTING_OPTIONS)
#define TEST_FAIL() testing_test_fail()
int testing_test_fail(void);
#define TEST_FAIL() testing_test_fail(false)
int testing_test_fail(bool is_alloc);
int testing_set_fail_pattern(bool is_alloc, char *patterns);
int testing_get_fail_pattern(bool is_alloc, char *buf, size_t buflen);
#else

133
src/utils/os_unix.c
View file

@ -540,10 +540,10 @@ void * os_memdup(const void *src, size_t len)
#ifdef WPA_TRACE
#if defined(WPA_TRACE_BFD) && defined(CONFIG_TESTING_OPTIONS)
static char wpa_trace_fail_func[256] = { 0 };
static unsigned int wpa_trace_fail_after;
static char wpa_trace_fail_func[2][256] = { "", "" };
static unsigned int wpa_trace_fail_after[2];
static int testing_fail_alloc(void)
int testing_test_fail(bool is_alloc)
{
const char *ignore_list[] = {
__func__, "os_malloc", "os_zalloc", "os_calloc", "os_realloc",
@ -554,7 +554,9 @@ static int testing_fail_alloc(void)
char *pos, *next;
int match;
if (!wpa_trace_fail_after)
is_alloc = !!is_alloc;
if (!wpa_trace_fail_after[is_alloc])
return 0;
res = wpa_trace_calling_func(func, WPA_TRACE_LEN);
@ -566,7 +568,7 @@ static int testing_fail_alloc(void)
i++;
}
pos = wpa_trace_fail_func;
pos = wpa_trace_fail_func[is_alloc];
match = 0;
while (i < res) {
@ -606,82 +608,10 @@ static int testing_fail_alloc(void)
if (!match)
return 0;
wpa_trace_fail_after--;
if (wpa_trace_fail_after == 0) {
wpa_printf(MSG_INFO, "TESTING: fail allocation at %s",
wpa_trace_fail_func);
for (i = 0; i < res; i++)
wpa_printf(MSG_INFO, "backtrace[%d] = %s",
(int) i, func[i]);
return 1;
}
return 0;
}
static char wpa_trace_test_fail_func[256] = { 0 };
static unsigned int wpa_trace_test_fail_after;
int testing_test_fail(void)
{
const char *func[WPA_TRACE_LEN];
size_t i, res, len;
char *pos, *next;
int match;
if (!wpa_trace_test_fail_after)
return 0;
res = wpa_trace_calling_func(func, WPA_TRACE_LEN);
i = 0;
if (i < res && os_strcmp(func[i], __func__) == 0)
i++;
pos = wpa_trace_test_fail_func;
match = 0;
while (i < res) {
int allow_skip = 1;
int maybe = 0;
if (*pos == '=') {
allow_skip = 0;
pos++;
} else if (*pos == '?') {
maybe = 1;
pos++;
}
next = os_strchr(pos, ';');
if (next)
len = next - pos;
else
len = os_strlen(pos);
if (os_memcmp(pos, func[i], len) != 0) {
if (maybe && next) {
pos = next + 1;
continue;
}
if (allow_skip) {
i++;
continue;
}
return 0;
}
if (!next) {
match = 1;
break;
}
pos = next + 1;
i++;
}
if (!match)
return 0;
wpa_trace_test_fail_after--;
if (wpa_trace_test_fail_after == 0) {
wpa_trace_fail_after[is_alloc]--;
if (wpa_trace_fail_after[is_alloc] == 0) {
wpa_printf(MSG_INFO, "TESTING: fail at %s",
wpa_trace_test_fail_func);
wpa_trace_fail_func[is_alloc]);
for (i = 0; i < res; i++)
wpa_printf(MSG_INFO, "backtrace[%d] = %s",
(int) i, func[i]);
@ -697,26 +627,15 @@ int testing_set_fail_pattern(bool is_alloc, char *patterns)
#ifdef WPA_TRACE_BFD
char *pos;
if (is_alloc) {
wpa_trace_fail_after = atoi(patterns);
pos = os_strchr(patterns, ':');
if (pos) {
pos++;
os_strlcpy(wpa_trace_fail_func, pos,
sizeof(wpa_trace_fail_func));
} else {
wpa_trace_fail_after = 0;
}
is_alloc = !!is_alloc;
wpa_trace_fail_after[is_alloc] = atoi(patterns);
pos = os_strchr(patterns, ':');
if (pos) {
pos++;
os_strlcpy(wpa_trace_fail_func[is_alloc], pos,
sizeof(wpa_trace_fail_func[is_alloc]));
} else {
wpa_trace_test_fail_after = atoi(patterns);
pos = os_strchr(patterns, ':');
if (pos) {
pos++;
os_strlcpy(wpa_trace_test_fail_func, pos,
sizeof(wpa_trace_test_fail_func));
} else {
wpa_trace_test_fail_after = 0;
}
wpa_trace_fail_after[is_alloc] = 0;
}
return 0;
@ -729,29 +648,21 @@ int testing_set_fail_pattern(bool is_alloc, char *patterns)
int testing_get_fail_pattern(bool is_alloc, char *buf, size_t buflen)
{
#ifdef WPA_TRACE_BFD
if (is_alloc)
return os_snprintf(buf, buflen, "%u:%s", wpa_trace_fail_after,
wpa_trace_fail_func);
return os_snprintf(buf, buflen, "%u:%s", wpa_trace_test_fail_after,
wpa_trace_test_fail_func);
is_alloc = !!is_alloc;
return os_snprintf(buf, buflen, "%u:%s", wpa_trace_fail_after[is_alloc],
wpa_trace_fail_func[is_alloc]);
#else /* WPA_TRACE_BFD */
return -1;
#endif /* WPA_TRACE_BFD */
}
#else
static inline int testing_fail_alloc(void)
{
return 0;
}
#endif
void * os_malloc(size_t size)
{
struct os_alloc_trace *a;
if (testing_fail_alloc())
if (testing_test_fail(true))
return NULL;
a = malloc(sizeof(*a) + size);