77 lines
1.7 KiB
C
77 lines
1.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/* Copyright (c) International Business Machines Corp., 2001
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* 07/2001 John George
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* -Ported
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* Copyright (c) Linux Test Project, 2002-2022
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*/
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/*\
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* [Description]
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*
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* Verify that, stat(2) succeeds to get the status of a file and fills the
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* stat structure elements regardless of whether process has or doesn't
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* have read access to the file.
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*/
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#include <pwd.h>
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#include "tst_test.h"
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#define FILE_SIZE 1024
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#define TST_FILEREAD "test_fileread"
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#define TST_FILENOREAD "test_filenoread"
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#define READ_MODE 0666
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#define NEW_MODE 0222
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#define MASK 0777
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static uid_t user_id;
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static gid_t group_id;
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static struct passwd *ltpuser;
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static struct tcase{
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char *pathname;
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unsigned int mode;
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} TC[] = {
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{TST_FILEREAD, READ_MODE},
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{TST_FILENOREAD, NEW_MODE}
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};
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static void verify_stat(unsigned int n)
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{
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struct tcase *tc = TC + n;
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struct stat stat_buf;
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TST_EXP_PASS(stat(tc->pathname, &stat_buf));
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TST_EXP_EQ_LU(stat_buf.st_uid, user_id);
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TST_EXP_EQ_LU(stat_buf.st_gid, group_id);
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TST_EXP_EQ_LI(stat_buf.st_size, FILE_SIZE);
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TST_EXP_EQ_LU(stat_buf.st_mode & MASK, tc->mode);
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TST_EXP_EQ_LU(stat_buf.st_nlink, 1);
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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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ltpuser = SAFE_GETPWNAM("nobody");
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SAFE_SETUID(ltpuser->pw_uid);
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for (i = 0; i < ARRAY_SIZE(TC); i++) {
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if (tst_fill_file(TC[i].pathname, 'a', 256, 4))
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tst_brk(TBROK, "Failed to create tst file %s",
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TC[i].pathname);
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SAFE_CHMOD(TC[i].pathname, TC[i].mode);
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}
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user_id = getuid();
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group_id = getgid();
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(TC),
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.setup = setup,
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.test = verify_stat,
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.needs_root = 1,
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.needs_tmpdir = 1,
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};
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