108 lines
3.1 KiB
C
108 lines
3.1 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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* 07/2001 Ported by Wayne Boyer
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* Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz>
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* Copyright (c) 2021 Xie Ziyao <xieziyao@huawei.com>
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*/
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/*\
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* [Description]
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*
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* Verify that:
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*
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* 1. Chown() returns -1 and sets errno to EPERM if the effective user id
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* of process does not match the owner of the file and the process is not
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* super user.
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* 2. Chown() returns -1 and sets errno to EACCES if search permission is
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* denied on a component of the path prefix.
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* 3. Chown() returns -1 and sets errno to EFAULT if pathname points outside
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* user's accessible address space.
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* 4. Chown() returns -1 and sets errno to ENAMETOOLONG if the pathname
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* component is too long.
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* 5. Chown() returns -1 and sets errno to ENOENT if the specified file does
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* not exists.
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* 6. Chown() returns -1 and sets errno to ENOTDIR if the directory component
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* in pathname is not a directory.
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* 7. Chown() returns -1 and sets errno to ELOOP if too many symbolic links
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* were encountered in resolving pathname.
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* 8. Chown() returns -1 and sets errno to EROFS if the named file resides on
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* a read-only filesystem.
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*/
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#include <pwd.h>
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#include "tst_test.h"
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#include "compat_tst_16.h"
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#include "tst_safe_macros.h"
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#define MODE 0666
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#define MODE_RWX (S_IRWXU|S_IRWXG|S_IRWXO)
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#define FILE_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)
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#define DIR_MODE (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
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#define MNT_POINT "mntpoint"
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#define DIR_TEMP "testdir_1"
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#define TEST_FILE1 "tfile_1"
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#define TEST_FILE2 "testdir_1/tfile_2"
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#define TEST_FILE3 "t_file/tfile_3"
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#define TEST_FILE4 "test_eloop1"
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#define TEST_FILE5 "mntpoint"
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static char long_path[PATH_MAX + 2] = {[0 ... PATH_MAX + 1] = 'a'};
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static struct test_case_t {
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char *pathname;
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int exp_errno;
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char *desc;
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} tc[] = {
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{TEST_FILE1, EPERM, "without permissions"},
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{TEST_FILE2, EACCES, "without full permissions of the path prefix"},
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{(char *)-1, EFAULT, "with unaccessible pathname points"},
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{long_path, ENAMETOOLONG, "when pathname is too long"},
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{"", ENOENT, "when file does not exist"},
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{TEST_FILE3, ENOTDIR, "when the path prefix is not a directory"},
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{TEST_FILE4, ELOOP, "with too many symbolic links"},
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{TEST_FILE5, EROFS, "when the named file resides on a read-only filesystem"}
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};
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static void run(unsigned int i)
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{
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uid_t uid;
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gid_t gid;
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UID16_CHECK((uid = geteuid()), "chown");
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GID16_CHECK((gid = getegid()), "chown");
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TST_EXP_FAIL(CHOWN(tc[i].pathname, uid, gid), tc[i].exp_errno,
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"chown() %s", tc[i].desc);
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}
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static void setup(void)
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{
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struct passwd *ltpuser;
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tc[2].pathname = tst_get_bad_addr(NULL);
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SAFE_SYMLINK("test_eloop1", "test_eloop2");
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SAFE_SYMLINK("test_eloop2", "test_eloop1");
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SAFE_SETEUID(0);
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SAFE_TOUCH("t_file", MODE_RWX, NULL);
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SAFE_TOUCH(TEST_FILE1, MODE, NULL);
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SAFE_MKDIR(DIR_TEMP, S_IRWXU);
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SAFE_TOUCH(TEST_FILE2, MODE, NULL);
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ltpuser = SAFE_GETPWNAM("nobody");
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SAFE_SETEUID(ltpuser->pw_uid);
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}
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static struct tst_test test = {
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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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.tcnt = ARRAY_SIZE(tc),
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.test = run,
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.setup = setup,
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};
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