C++ (Cpp) rand_len Examples

Example #1

File: mtd_stresstest.c Project: danelledeano/VTech-InnoTab

static int do_read(void)
{
	size_t read = 0;
	int eb = rand_eb();
	int offs = rand_offs();
	int len = rand_len(offs), err;
	loff_t addr;

	if (bbt[eb + 1]) {
		if (offs >= mtd->erasesize)
			offs -= mtd->erasesize;
		if (offs + len > mtd->erasesize)
			len = mtd->erasesize - offs;
	}
	addr = eb * mtd->erasesize + offs;
	err = mtd->read(mtd, addr, len, &read, readbuf);
	if (err == -EUCLEAN)
		err = 0;
	if (unlikely(err || read != len)) {
		printk(PRINT_PREF "error: read failed at 0x%llx of length %d(%x)\n",
		       (long long)addr, len, len);
		if (!err)
			err = -EINVAL;
		return err;
	}
	return 0;
}

Example #2

File: mtd_stresstest.c Project: morristech/linux

static int do_read(void)
{
	size_t read;
	int eb = rand_eb();
	int offs = rand_offs();
	int len = rand_len(offs), err;
	loff_t addr;

	if (bbt[eb + 1]) {
		if (offs >= mtd->erasesize)
			offs -= mtd->erasesize;
		if (offs + len > mtd->erasesize)
			len = mtd->erasesize - offs;
	}
	addr = eb * mtd->erasesize + offs;
	err = mtd_read(mtd, addr, len, &read, readbuf);
	if (mtd_is_bitflip(err))
		err = 0;
	if (unlikely(err || read != len)) {
		pr_err("error: read failed at 0x%llx\n",
		       (long long)addr);
		if (!err)
			err = -EINVAL;
		return err;
	}
	return 0;
}

Example #3

File: stresstest.c Project: AlexShiLucky/linux

static int do_read(void)
{
	int eb = rand_eb();
	int offs = rand_offs();
	int len = rand_len(offs);
	loff_t addr;

	if (bbt[eb + 1]) {
		if (offs >= mtd->erasesize)
			offs -= mtd->erasesize;
		if (offs + len > mtd->erasesize)
			len = mtd->erasesize - offs;
	}
	addr = (loff_t)eb * mtd->erasesize + offs;
	return mtdtest_read(mtd, addr, len, readbuf);
}

Example #4

File: mtd_stresstest.c Project: danelledeano/VTech-InnoTab

static int do_write(void)
{
	int eb = rand_eb(), offs, err, len;
	size_t written = 0;
	loff_t addr;

	offs = offsets[eb];
	if (offs >= mtd->erasesize) {
		err = erase_eraseblock(eb);
		if (err)
			return err;
		offs = offsets[eb] = 0;
	}
	len = rand_len(offs);
	len = ((len + pgsize - 1) / pgsize) * pgsize;
	if (offs + len > mtd->erasesize) {
		if (bbt[eb + 1])
			len = mtd->erasesize - offs;
		else {
			err = erase_eraseblock(eb + 1);
			if (err)
				return err;
			offsets[eb + 1] = 0;
		}
	}
	addr = eb * mtd->erasesize + offs;
	err = mtd->write(mtd, addr, len, &written, writebuf);
	if (unlikely(err || written != len)) {
		printk(PRINT_PREF "error: write failed at 0x%llx\n",
		       (long long)addr);
		if (!err)
			err = -EINVAL;
		return err;
	}
	offs += len;
	while (offs > mtd->erasesize) {
		offsets[eb++] = mtd->erasesize;
		offs -= mtd->erasesize;
	}
	offsets[eb] = offs;
	return 0;
}

Example #5

File: stresstest.c Project: AlexShiLucky/linux

static int do_write(void)
{
	int eb = rand_eb(), offs, err, len;
	loff_t addr;

	offs = offsets[eb];
	if (offs >= mtd->erasesize) {
		err = mtdtest_erase_eraseblock(mtd, eb);
		if (err)
			return err;
		offs = offsets[eb] = 0;
	}
	len = rand_len(offs);
	len = ((len + pgsize - 1) / pgsize) * pgsize;
	if (offs + len > mtd->erasesize) {
		if (bbt[eb + 1])
			len = mtd->erasesize - offs;
		else {
			err = mtdtest_erase_eraseblock(mtd, eb + 1);
			if (err)
				return err;
			offsets[eb + 1] = 0;
		}
	}
	addr = (loff_t)eb * mtd->erasesize + offs;
	err = mtdtest_write(mtd, addr, len, writebuf);
	if (unlikely(err))
		return err;
	offs += len;
	while (offs > mtd->erasesize) {
		offsets[eb++] = mtd->erasesize;
		offs -= mtd->erasesize;
	}
	offsets[eb] = offs;
	return 0;
}