74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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*
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* 07/2001 Ported by Wayne Boyer
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*/
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/*\
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* [Description]
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*
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* Testcase to test whether chroot(2) sets errno correctly.
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*
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* - to test whether chroot() is setting ENAMETOOLONG if the
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* pathname is more than VFS_MAXNAMELEN.
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* - to test whether chroot() is setting ENOTDIR if the argument
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* is not a directory.
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* - to test whether chroot() is setting ENOENT if the directory
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* does not exist.
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* - attempt to chroot to a path pointing to an invalid address
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* and expect EFAULT as errno.
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* - to test whether chroot() is setting ELOOP if the two
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* symbolic directory who point to each other.
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*/
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#include <stdio.h>
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#include "tst_test.h"
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static char fname[255];
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static char nonexistent_dir[100] = "testdir";
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static char bad_dir[] = "abcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyz";
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static char symbolic_dir[] = "sym_dir1";
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static struct tcase {
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char *dir;
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int error;
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char *desc;
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} tcases[] = {
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{bad_dir, ENAMETOOLONG, "chroot(longer than VFS_MAXNAMELEN)"},
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{fname, ENOTDIR, "chroot(not a directory)"},
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{nonexistent_dir, ENOENT, "chroot(does not exists)"},
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{(char *)-1, EFAULT, "chroot(an invalid address)"},
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{symbolic_dir, ELOOP, "chroot(symlink loop)"}
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};
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static void verify_chroot(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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TST_EXP_FAIL(chroot(tc->dir), tc->error, "%s", tc->desc);
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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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(void)sprintf(fname, "tfile_%d", getpid());
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SAFE_TOUCH(fname, 0666, NULL);
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for (i = 0; i < ARRAY_SIZE(tcases); i++) {
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if (tcases[i].error == EFAULT)
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tcases[3].dir = tst_get_bad_addr(NULL);
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}
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SAFE_SYMLINK("sym_dir1/", "sym_dir2");
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SAFE_SYMLINK("sym_dir2/", "sym_dir1");
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}
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static struct tst_test test = {
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.setup = setup,
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_chroot,
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.needs_tmpdir = 1,
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};
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