Merge branch 'master' of https://github.com/bvanassche/fio

[fio.git] / t / fuzz / onefile.c

#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>

int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);

int main(int argc, char** argv)
{
	FILE *fp;
	uint8_t *data;
	size_t size;

	if (argc != 2)
		return 1;

	/* opens the file, get its size, and reads it into a buffer */
	fp = fopen(argv[1], "rb");
	if (fp == NULL)
		return 2;

	if (fseek(fp, 0L, SEEK_END) != 0) {
		fclose(fp);
		return 2;
	}
	size = ftell(fp);
	if (size == (size_t) -1) {
		fclose(fp);
		return 2;
	}
	if (fseek(fp, 0L, SEEK_SET) != 0) {
		fclose(fp);
		return 2;
	}
	data = malloc(size);
	if (data == NULL) {
		fclose(fp);
		return 2;
	}
	if (fread(data, size, 1, fp) != 1) {
		fclose(fp);
		free(data);
		return 2;
	}

	/* launch fuzzer */
	LLVMFuzzerTestOneInput(data, size);
	free(data);
	fclose(fp);

	return 0;
}