84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2013 Wanlong Gao <gaowanlong@cn.fujitsu.com>
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* Copyright (c) 2018 Linux Test Project
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*/
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/*\
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* [Description]
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*
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* Verify that open() fails with:
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*
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* - EEXIST when pathname already exists and O_CREAT and O_EXCL were used
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* - EISDIR when pathname refers to a directory and the access requested
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* involved writing
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* - ENOTDIR when O_DIRECTORY was specified and pathname was not a directory
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* - ENAMETOOLONG when pathname was too long
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* - EACCES when requested access to the file is not allowed
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* - EFAULT when pathname points outside the accessible address space
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*/
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#define _GNU_SOURCE /* for O_DIRECTORY */
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#include <pwd.h>
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#include "tst_test.h"
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#define FLAGS_DESC(x) .flags = x, .desc = #x
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static char *existing_fname = "open08_testfile";
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static char *toolong_fname = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyzabcdefghijklmnopqrstmnopqrstuvwxyz";
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static char *dir_fname = "/tmp";
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static char *user2_fname = "user2_0600";
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static char *unmapped_fname;
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struct test_case_t;
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static struct test_case_t {
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char **fname;
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int flags;
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const char *desc;
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int error;
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} tcases[] = {
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{&existing_fname, FLAGS_DESC(O_CREAT | O_EXCL), EEXIST},
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{&dir_fname, FLAGS_DESC(O_RDWR), EISDIR},
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{&existing_fname, FLAGS_DESC(O_DIRECTORY), ENOTDIR},
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{&toolong_fname, FLAGS_DESC(O_RDWR), ENAMETOOLONG},
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{&user2_fname, FLAGS_DESC(O_WRONLY), EACCES},
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{&unmapped_fname, FLAGS_DESC(O_CREAT), EFAULT},
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};
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static void verify_open(unsigned int i)
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{
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TST_EXP_FAIL2(open(*tcases[i].fname, tcases[i].flags, 0644),
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tcases[i].error, "%s", tcases[i].desc);
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}
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static void setup(void)
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{
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int fildes;
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char nobody_uid[] = "nobody";
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struct passwd *ltpuser;
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umask(0);
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SAFE_CREAT(user2_fname, 0600);
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/* Switch to nobody user for correct error code collection */
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ltpuser = getpwnam(nobody_uid);
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SAFE_SETGID(ltpuser->pw_gid);
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SAFE_SETUID(ltpuser->pw_uid);
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fildes = SAFE_CREAT(existing_fname, 0600);
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SAFE_CLOSE(fildes);
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unmapped_fname = tst_get_bad_addr(NULL);
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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_tmpdir = 1,
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.needs_root = 1,
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.setup = setup,
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.test = verify_open,
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};
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