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/*
* Copyright (c) 2020 Martin Wilck, SUSE
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <stdbool.h>
#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <stdlib.h>
#include <cmocka.h>
#include <libudev.h>
#include <sys/sysmacros.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <dirent.h>
#include "util.h"
#include "debug.h"
struct path;
#include "sysfs.h"
#include "globals.c"
static bool sys_dev_block_exists(void)
{
DIR *dir;
bool rc = false;
dir = opendir("/sys/dev/block");
if (dir != NULL) {
struct dirent *de;
while((de = readdir(dir)) != NULL) {
if (strcmp(de->d_name, ".") &&
strcmp(de->d_name, "..")) {
rc = true;
break;
}
}
closedir(dir);
}
return rc;
}
static int get_one_devt(char *devt, size_t len)
{
struct udev_enumerate *enm;
int r, ret = -1;
struct udev_list_entry *first;
struct udev_device *u_dev;
const char *path;
dev_t devnum;
enm = udev_enumerate_new(udev);
if (!enm)
return -1;
r = udev_enumerate_add_match_subsystem(enm, "block");
r = udev_enumerate_scan_devices(enm);
if (r < 0)
goto out;
first = udev_enumerate_get_list_entry(enm);
if (!first)
goto out;
path = udev_list_entry_get_name(first);
u_dev = udev_device_new_from_syspath(udev, path);
if (!u_dev)
goto out;
devnum = udev_device_get_devnum(u_dev);
snprintf(devt, len, "%d:%d",
major(devnum), minor(devnum));
udev_device_unref(u_dev);
condlog(3, "found block device: %s", devt);
ret = 0;
out:
udev_enumerate_unref(enm);
return ret;
}
int setup(void **state)
{
static char dev_t[BLK_DEV_SIZE];
udev = udev_new();
if (udev == NULL)
return -1;
*state = dev_t;
return get_one_devt(dev_t, sizeof(dev_t));
}
int teardown(void **state)
{
udev_unref(udev);
return 0;
}
static void test_devt2devname_devt_good(void **state)
{
char dummy[BLK_DEV_SIZE];
if (!sys_dev_block_exists())
skip();
assert_int_equal(devt2devname(dummy, sizeof(dummy), *state), 0);
}
static void test_devt2devname_devname_null(void **state)
{
assert_int_equal(devt2devname(NULL, 0, ""), 1);
}
/* buffer length 0 */
static void test_devt2devname_length_0(void **state)
{
char dummy[] = "";
assert_int_equal(devt2devname(dummy, 0, ""), 1);
}
/* buffer too small */
static void test_devt2devname_length_1(void **state)
{
char dummy[] = "";
assert_int_equal(devt2devname(dummy, sizeof(dummy), *state), 1);
}
static void test_devt2devname_devt_null(void **state)
{
char dummy[32];
assert_int_equal(devt2devname(dummy, sizeof(dummy), NULL), 1);
}
static void test_devt2devname_devt_empty(void **state)
{
char dummy[32];
assert_int_equal(devt2devname(dummy, sizeof(dummy), ""), 1);
}
static void test_devt2devname_devt_invalid_1(void **state)
{
char dummy[32];
assert_int_equal(devt2devname(dummy, sizeof(dummy), "foo"), 1);
}
static void test_devt2devname_devt_invalid_2(void **state)
{
char dummy[32];
assert_int_equal(devt2devname(dummy, sizeof(dummy), "1234"), 1);
}
static void test_devt2devname_devt_invalid_3(void **state)
{
char dummy[32];
assert_int_equal(devt2devname(dummy, sizeof(dummy), "0:0"), 1);
}
static void test_devt2devname_real(void **state)
{
struct udev_enumerate *enm;
int r;
struct udev_list_entry *first, *item;
unsigned int i = 0;
if (!sys_dev_block_exists())
skip();
enm = udev_enumerate_new(udev);
assert_non_null(enm);
r = udev_enumerate_add_match_subsystem(enm, "block");
assert_in_range(r, 0, INT_MAX);
r = udev_enumerate_scan_devices(enm);
first = udev_enumerate_get_list_entry(enm);
udev_list_entry_foreach(item, first) {
const char *path = udev_list_entry_get_name(item);
struct udev_device *u_dev;
dev_t devnum;
char devt[BLK_DEV_SIZE];
char devname[FILE_NAME_SIZE];
u_dev = udev_device_new_from_syspath(udev, path);
assert_non_null(u_dev);
devnum = udev_device_get_devnum(u_dev);
snprintf(devt, sizeof(devt), "%d:%d",
major(devnum), minor(devnum));
r = devt2devname(devname, sizeof(devname), devt);
assert_int_equal(r, 0);
assert_string_equal(devname, udev_device_get_sysname(u_dev));
i++;
udev_device_unref(u_dev);
}
udev_enumerate_unref(enm);
condlog(2, "devt2devname test passed for %u block devices", i);
}
static int devt2devname_tests(void)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test(test_devt2devname_devt_good),
cmocka_unit_test(test_devt2devname_devname_null),
cmocka_unit_test(test_devt2devname_length_0),
cmocka_unit_test(test_devt2devname_length_1),
cmocka_unit_test(test_devt2devname_devt_null),
cmocka_unit_test(test_devt2devname_devt_empty),
cmocka_unit_test(test_devt2devname_devt_invalid_1),
cmocka_unit_test(test_devt2devname_devt_invalid_2),
cmocka_unit_test(test_devt2devname_devt_invalid_3),
cmocka_unit_test(test_devt2devname_real),
};
return cmocka_run_group_tests(tests, setup, teardown);
}
int main(void)
{
int ret = 0;
init_test_verbosity(-1);
ret += devt2devname_tests();
return ret;
}
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