83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2014 Fujitsu Ltd.
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* Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
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*/
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/*
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* DESCRIPTION
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* check mkdirat() with various error conditions that should produce
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* ELOOP and EROFS.
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*/
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#define _GNU_SOURCE
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#include "tst_test.h"
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#include "lapi/mkdirat.h"
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#define MNT_POINT "mntpoint"
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#define TEST_DIR "mntpoint/test_dir"
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#define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP| \
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S_IXGRP|S_IROTH|S_IXOTH)
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static int dir_fd;
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static int cur_fd = AT_FDCWD;
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static char test_dir[PATH_MAX] = ".";
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static struct tcase {
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int *dirfd;
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char *pathname;
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int exp_errno;
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} tcases[] = {
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{&dir_fd, TEST_DIR, EROFS},
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{&cur_fd, TEST_DIR, EROFS},
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{&dir_fd, test_dir, ELOOP},
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{&cur_fd, test_dir, ELOOP},
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};
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static void setup(void)
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{
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unsigned int i;
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dir_fd = SAFE_OPEN(".", O_DIRECTORY);
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SAFE_MKDIR("test_eloop", DIR_MODE);
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SAFE_SYMLINK("../test_eloop", "test_eloop/test_eloop");
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/*
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* NOTE: the ELOOP test is written based on that the consecutive
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* symlinks limits in kernel is hardwired to 40.
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*/
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for (i = 0; i < 43; i++)
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strcat(test_dir, "/test_eloop");
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}
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static void mkdirat_verify(unsigned int i)
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{
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struct tcase *test = &tcases[i];
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TEST(mkdirat(*test->dirfd, test->pathname, 0777));
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if (TST_RET != -1) {
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tst_res(TFAIL, "mkdirat() succeeded unexpectedly (%li)",
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TST_RET);
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return;
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}
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if (TST_ERR == test->exp_errno) {
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tst_res(TPASS | TTERRNO, "mkdirat() failed as expected");
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return;
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}
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tst_res(TFAIL | TTERRNO,
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"mkdirat() failed unexpectedly; expected: %d - %s",
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test->exp_errno, tst_strerrno(test->exp_errno));
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}
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static struct tst_test test = {
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.setup = setup,
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.test = mkdirat_verify,
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.tcnt = ARRAY_SIZE(tcases),
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.needs_root = 1,
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.needs_rofs = 1,
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.mntpoint = MNT_POINT,
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};
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