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udev: add fuzzer for udev_rule_parse_value

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This commit is contained in:
Yu, Li-Yu 2020-10-25 02:01:29 +08:00
parent 9abfd759d2
commit c32d562da5
2 changed files with 35 additions and 0 deletions
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31
src/fuzz/fuzz-udev-rule-parse-value.c Normal file
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@ -0,0 +1,31 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <string.h>
#include "alloc-util.h"
#include "fuzz.h"
#include "udev-util.h"
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
_cleanup_free_ char *str = NULL;
int r;
char *value = UINT_TO_PTR(0x12345678U);
char *endpos = UINT_TO_PTR(0x87654321U);
assert_se(str = malloc(size + 1));
memcpy(str, data, size);
str[size] = '\0';
r = udev_rule_parse_value(str, &value, &endpos);
if (r < 0) {
/* not modified on failure */
assert_se(value == UINT_TO_PTR(0x12345678U));
assert_se(endpos == UINT_TO_PTR(0x87654321U));
} else {
assert_se(endpos <= str + size);
assert_se(endpos > str + 1);
}
return 0;
}

4
src/fuzz/meson.build
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@ -152,4 +152,8 @@ fuzzers += [
'src/xdg-autostart-generator/xdg-autostart-service.c'],
[],
[]],
[['src/fuzz/fuzz-udev-rule-parse-value.c'],
[libshared],
[]],
]