129 lines
2.6 KiB
C
129 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Zilogic Systems Pvt. Ltd., 2018
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* Email: code@zilogic.com
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*/
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/*
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* Test statx
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*
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* This code tests the following flags:
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* 1) AT_EMPTY_PATH
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* 2) AT_SYMLINK_NOFOLLOW
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*
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* A test file and a link for it is created.
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*
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* To check empty path flag, test file fd alone is passed.
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* Predefined size of testfile is checked against obtained value.
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*
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* To check symlink no follow flag, the linkname is statxed.
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* To ensure that link is not dereferenced, obtained inode is compared
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* with test file inode.
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* Minimum kernel version required is 4.11.
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <inttypes.h>
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#include "tst_test.h"
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#include "tst_safe_macros.h"
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#include "lapi/stat.h"
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#define TESTFILE "test_temp"
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#define LINK_FILE "test_temp_ln"
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#define MODE 0644
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#define SIZE 14
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static int file_fd;
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static void test_empty_path(void)
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{
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struct statx buf;
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TEST(statx(file_fd, "", AT_EMPTY_PATH, 0, &buf));
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if (TST_RET == 0)
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tst_res(TPASS,
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"statx(file_fd, \"\", AT_EMPTY_PATH, 0, &buf)");
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else
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tst_brk(TFAIL | TTERRNO,
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"statx(file_fd, \"\", AT_EMPTY_PATH, 0, &buff)");
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if (buf.stx_size == SIZE)
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tst_res(TPASS,
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"stx_size(%"PRIu64") is correct", buf.stx_size);
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else
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tst_res(TFAIL,
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"stx_size(%"PRIu64") is not same as expected(%u)",
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buf.stx_size, SIZE);
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}
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static void test_sym_link(void)
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{
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struct statx fbuf;
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struct statx lbuf;
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TEST(statx(AT_FDCWD, TESTFILE, 0, 0, &fbuf));
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if (TST_RET == 0)
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tst_res(TPASS,
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"statx(AT_FDCWD, %s, 0, 0, &fbuf)", TESTFILE);
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else
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tst_brk(TFAIL | TTERRNO,
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"statx(AT_FDCWD, %s, 0, 0, &fbuf)", TESTFILE);
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TEST(statx(AT_FDCWD, LINK_FILE, AT_SYMLINK_NOFOLLOW, 0, &lbuf));
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if (TST_RET == 0)
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tst_res(TPASS,
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"statx(AT_FDCWD, %s, AT_SYMLINK_NOFOLLOW, 0,&lbuf)",
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LINK_FILE);
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else
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tst_brk(TFAIL | TTERRNO,
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"statx(AT_FDCWD, %s, AT_SYMLINK_NOFOLLOW, 0,&lbuf)",
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LINK_FILE);
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if (fbuf.stx_ino != lbuf.stx_ino)
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tst_res(TPASS, "Statx symlink flag worked as expected");
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else
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tst_res(TFAIL,
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"Statx symlink flag failed to work as expected");
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}
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struct tcase {
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void (*tfunc)(void);
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} tcases[] = {
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{&test_empty_path},
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{&test_sym_link}
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};
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static void run(unsigned int i)
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{
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tcases[i].tfunc();
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}
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static void setup(void)
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{
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char data_buf[SIZE] = "LinusTorvalds";
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file_fd = SAFE_OPEN(TESTFILE, O_RDWR | O_CREAT, MODE);
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SAFE_WRITE(0, file_fd, data_buf, sizeof(data_buf));
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SAFE_SYMLINK(TESTFILE, LINK_FILE);
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}
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static void cleanup(void)
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{
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if (file_fd > 0)
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SAFE_CLOSE(file_fd);
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}
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static struct tst_test test = {
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.test = run,
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.tcnt = ARRAY_SIZE(tcases),
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.setup = setup,
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.cleanup = cleanup,
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.min_kver = "4.11",
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.needs_tmpdir = 1,
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};
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