69 lines
1.4 KiB
C
69 lines
1.4 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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* Ported to LTP: Wayne Boyer
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* 06/2017 Modified by Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
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*/
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/*
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* DESCRIPTION
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* 1. open a new file without O_CREAT, ENOENT should be returned.
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* 2. open a file with O_RDONLY | O_NOATIME and the caller was not
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* privileged, EPERM should be returned.
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pwd.h>
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#include "tst_test.h"
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#define TEST_FILE "test_file"
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#define TEST_FILE2 "test_file2"
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static struct tcase {
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const char *filename;
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int flag;
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int exp_errno;
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const char *desc;
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} tcases[] = {
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{TEST_FILE, O_RDWR, ENOENT, "new file without O_CREAT"},
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{TEST_FILE2, O_RDONLY | O_NOATIME, EPERM, "unpriviledget O_RDONLY | O_NOATIME"},
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};
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void setup(void)
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{
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struct passwd *ltpuser;
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SAFE_TOUCH(TEST_FILE2, 0644, 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 void verify_open(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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TST_EXP_FAIL(open(tc->filename, tc->flag, 0444),
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tc->exp_errno, "open() %s", tc->desc);
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}
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void cleanup(void)
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{
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SAFE_SETEUID(0);
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.needs_root = 1,
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.needs_tmpdir = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test = verify_open,
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};
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