159 lines
3.4 KiB
C
159 lines
3.4 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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*/
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/*
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* DESCRIPTION
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* Testcase to check creat(2) sets the following errnos correctly:
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* 1. EISDIR
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* 2. ENAMETOOLONG
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* 3. ENOENT
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* 4. ENOTDIR
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* 5. EFAULT
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* 6. EACCES
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* 7. ELOOP
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* 8. EROFS
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*
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*
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* ALGORITHM
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* 1. Attempt to creat(2) an existing directory, and test for
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* EISDIR
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* 2. Attempt to creat(2) a file whose name is more than
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* VFS_MAXNAMLEN and test for ENAMETOOLONG.
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* 3. Attempt to creat(2) a file inside a directory which doesn't
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* exist, and test for ENOENT
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* 4. Attempt to creat(2) a file, the pathname of which comprises
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* a component which is a file, test for ENOTDIR.
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* 5. Attempt to creat(2) a file with a bad address
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* and test for EFAULT
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* 6. Attempt to creat(2) a file in a directory with no
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* execute permission and test for EACCES
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* 7. Attempt to creat(2) a file which links the other file that
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* links the former and test for ELOOP
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* 8. Attempt to creat(2) a file in a Read-only file system
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* and test for EROFS
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*/
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#include <errno.h>
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#include <string.h>
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#include <limits.h>
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#include <pwd.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/mount.h>
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#include "tst_test.h"
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#define TEST_FILE "test_dir"
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#define NO_DIR "testfile/testdir"
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#define NOT_DIR "file1/testdir"
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#define TEST6_FILE "dir6/file6"
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#define TEST7_FILE "file7"
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#define TEST8_FILE "mntpoint/tmp"
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#define MODE1 0444
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#define MODE2 0666
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static void setup(void);
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static void test6_setup(void);
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static void test6_cleanup(void);
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#if !defined(UCLINUX)
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static void bad_addr_setup(int);
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#endif
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static struct passwd *ltpuser;
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static char long_name[PATH_MAX+2];
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static struct test_case_t {
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char *fname;
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int mode;
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int error;
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void (*setup)();
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void (*cleanup)(void);
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} tcases[] = {
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{TEST_FILE, MODE1, EISDIR, NULL, NULL},
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{long_name, MODE1, ENAMETOOLONG, NULL, NULL},
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{NO_DIR, MODE1, ENOENT, NULL, NULL},
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{NOT_DIR, MODE1, ENOTDIR, NULL, NULL},
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#if !defined(UCLINUX)
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{NULL, MODE1, EFAULT, bad_addr_setup, NULL},
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#endif
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{TEST6_FILE, MODE1, EACCES, test6_setup, test6_cleanup},
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{TEST7_FILE, MODE1, ELOOP, NULL, NULL},
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{TEST8_FILE, MODE1, EROFS, NULL, NULL},
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};
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static void verify_creat(unsigned int i)
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{
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if (tcases[i].setup != NULL)
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tcases[i].setup(i);
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TEST(creat(tcases[i].fname, tcases[i].mode));
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if (tcases[i].cleanup != NULL)
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tcases[i].cleanup();
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if (TST_RET != -1) {
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tst_res(TFAIL, "call succeeded unexpectedly");
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return;
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}
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if (TST_ERR == tcases[i].error) {
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tst_res(TPASS | TTERRNO, "got expected failure");
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return;
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}
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tst_res(TFAIL | TTERRNO, "expected %s",
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tst_strerrno(tcases[i].error));
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}
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static void setup(void)
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{
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ltpuser = SAFE_GETPWNAM("nobody");
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SAFE_MKDIR(TEST_FILE, MODE2);
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memset(long_name, 'a', PATH_MAX+1);
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SAFE_TOUCH("file1", MODE1, NULL);
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SAFE_MKDIR("dir6", MODE2);
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SAFE_SYMLINK(TEST7_FILE, "test_file_eloop2");
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SAFE_SYMLINK("test_file_eloop2", TEST7_FILE);
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}
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#if !defined(UCLINUX)
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static void bad_addr_setup(int i)
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{
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if (tcases[i].fname)
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return;
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tcases[i].fname = SAFE_MMAP(0, 1, PROT_NONE,
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MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
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}
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#endif
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static void test6_setup(void)
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{
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SAFE_SETEUID(ltpuser->pw_uid);
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}
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static void test6_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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.test = verify_creat,
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.needs_root = 1,
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.needs_rofs = 1,
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.mntpoint = "mntpoint",
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.setup = setup,
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};
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