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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) Zilogic Systems Pvt. Ltd., 2018
* Email: code@zilogic.com
*/
/*\
* [Description]
*
* This code tests the functionality of statx system call.
*
* The metadata for normal file are tested against expected values:
*
* - gid
* - uid
* - mode
* - blocks
* - size
* - nlink
* - mnt_id
*
* The metadata for device file are tested against expected values:
*
* - MAJOR number
* - MINOR number
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/sysmacros.h>
#include "tst_test.h"
#include "tst_safe_macros.h"
#include "lapi/stat.h"
#include "tst_safe_stdio.h"
#include <string.h>
#include <inttypes.h>
#define TESTFILE "test_file"
#define MNTPOINT "mntpoint/"
#define DEVICEFILE MNTPOINT"blk_dev"
#define MODE 0644
#define SIZE 256
#define MAJOR 8
#define MINOR 1
static int file_fd = -1;
#ifdef HAVE_STRUCT_STATX_STX_MNT_ID
static void test_mnt_id(struct statx *buf)
{
FILE *file;
char line[PATH_MAX];
int pid, flag = 0;
unsigned int line_mjr, line_mnr;
uint64_t mnt_id;
if (!(buf->stx_mask & STATX_MNT_ID)) {
tst_res(TCONF, "stx_mnt_id is not supported until linux 5.8");
return;
}
file = SAFE_FOPEN("/proc/self/mountinfo", "r");
while (fgets(line, sizeof(line), file)) {
if (sscanf(line, "%"SCNu64" %*d %d:%d", &mnt_id, &line_mjr, &line_mnr) != 3)
continue;
if (line_mjr == buf->stx_dev_major && line_mnr == buf->stx_dev_minor) {
if (buf->stx_mnt_id == mnt_id) {
flag = 1;
break;
}
tst_res(TINFO, "%s doesn't contain %"PRIu64" %d:%d",
line, (uint64_t)buf->stx_mnt_id, buf->stx_dev_major, buf->stx_dev_minor);
}
}
SAFE_FCLOSE(file);
if (flag)
tst_res(TPASS,
"statx.stx_mnt_id equals to mount_id(%"PRIu64") in /proc/self/mountinfo",
mnt_id);
else
tst_res(TFAIL,
"statx.stx_mnt_id(%"PRIu64") doesn't exist in /proc/self/mountinfo",
(uint64_t)buf->stx_mnt_id);
pid = getpid();
snprintf(line, PATH_MAX, "/proc/%d/fdinfo/%d", pid, file_fd);
TST_ASSERT_FILE_INT(line, "mnt_id:", buf->stx_mnt_id);
}
#endif
static void test_normal_file(void)
{
struct statx buff;
TEST(statx(AT_FDCWD, TESTFILE, 0, 0, &buff));
if (TST_RET == 0)
tst_res(TPASS,
"statx(AT_FDCWD, %s, 0, 0, &buff)", TESTFILE);
else
tst_brk(TFAIL | TTERRNO,
"statx(AT_FDCWD, %s, 0, 0, &buff)", TESTFILE);
if (geteuid() == buff.stx_uid)
tst_res(TPASS, "stx_uid(%u) is correct", buff.stx_uid);
else
tst_res(TFAIL, "stx_uid(%u) is different from euid(%u)",
buff.stx_uid, geteuid());
if (getegid() == buff.stx_gid)
tst_res(TPASS, "stx_gid(%u) is correct", buff.stx_gid);
else
tst_res(TFAIL, "stx_gid(%u) is different from egid(%u)",
buff.stx_gid, getegid());
if (buff.stx_size == SIZE)
tst_res(TPASS,
"stx_size(%"PRIu64") is correct", (uint64_t)buff.stx_size);
else
tst_res(TFAIL,
"stx_size(%"PRIu64") is different from expected(%u)",
(uint64_t)buff.stx_size, SIZE);
if ((buff.stx_mode & ~(S_IFMT)) == MODE)
tst_res(TPASS, "stx_mode(%u) is correct", buff.stx_mode);
else
tst_res(TFAIL, "stx_mode(%u) is different from expected(%u)",
buff.stx_mode, MODE);
if (buff.stx_blocks <= buff.stx_blksize/512 * 2)
tst_res(TPASS, "stx_blocks(%"PRIu64") is valid",
(uint64_t)buff.stx_blocks);
else
tst_res(TFAIL, "stx_blocks(%"PRIu64") is invalid",
(uint64_t)buff.stx_blocks);
if (buff.stx_nlink == 1)
tst_res(TPASS, "stx_nlink(1) is correct");
else
tst_res(TFAIL, "stx_nlink(%u) is different from expected(1)",
buff.stx_nlink);
#ifdef HAVE_STRUCT_STATX_STX_MNT_ID
test_mnt_id(&buff);
#else
tst_res(TCONF, "stx_mnt_id is not defined in struct statx");
#endif
}
static void test_device_file(void)
{
struct statx buff;
TEST(statx(AT_FDCWD, DEVICEFILE, 0, 0, &buff));
if (TST_RET == 0)
tst_res(TPASS,
"statx(AT_FDCWD, %s, 0, 0, &buff)", DEVICEFILE);
else
tst_brk(TFAIL | TTERRNO,
"statx(AT_FDCWD, %s, 0, 0, &buff)", DEVICEFILE);
if (buff.stx_rdev_major == MAJOR)
tst_res(TPASS, "stx_rdev_major(%u) is correct",
buff.stx_rdev_major);
else
tst_res(TFAIL,
"stx_rdev_major(%u) is different from expected(%u)",
buff.stx_rdev_major, MAJOR);
if (buff.stx_rdev_minor == MINOR)
tst_res(TPASS, "stx_rdev_minor(%u) is correct",
buff.stx_rdev_minor);
else
tst_res(TFAIL,
"stx_rdev_minor(%u) is different from expected(%u)",
buff.stx_rdev_minor, MINOR);
}
static struct tcase {
void (*tfunc)(void);
} tcases[] = {
{&test_normal_file},
{&test_device_file}
};
static void run(unsigned int i)
{
tcases[i].tfunc();
}
static void setup(void)
{
char data_buff[SIZE];
umask(0);
memset(data_buff, '@', sizeof(data_buff));
file_fd = SAFE_OPEN(TESTFILE, O_RDWR|O_CREAT, MODE);
SAFE_WRITE(SAFE_WRITE_ALL, file_fd, data_buff, sizeof(data_buff));
SAFE_MKNOD(DEVICEFILE, S_IFBLK | 0777, makedev(MAJOR, MINOR));
}
static void cleanup(void)
{
if (file_fd > -1)
SAFE_CLOSE(file_fd);
}
static struct tst_test test = {
.test = run,
.tcnt = ARRAY_SIZE(tcases),
.setup = setup,
.cleanup = cleanup,
.min_kver = "4.11",
.needs_devfs = 1,
.mntpoint = MNTPOINT,
.needs_root = 1,
};
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