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186 lines
4.9 KiB
186 lines
4.9 KiB
/*
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* Copyright (c) International Business Machines Corp., 2001
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* 07/2001 John George
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Test Description:
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* Verify that,
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* 1) truncate(2) returns -1 and sets errno to EACCES if search/write
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* permission denied for the process on the component of the path prefix
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* or named file.
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* 2) truncate(2) returns -1 and sets errno to ENOTDIR if the component of
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* the path prefix is not a directory.
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* 3) truncate(2) returns -1 and sets errno to EFAULT if pathname points
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* outside user's accessible address space.
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* 4) truncate(2) returns -1 and sets errno to ENAMETOOLONG if the component
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* of a pathname exceeded 255 characters or entire pathname exceeds 1023
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* characters.
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* 5) truncate(2) returns -1 and sets errno to ENOENT if the named file
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* does not exist.
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* 6) truncate(2) returns -1 and sets errno to EISDIR if the named file
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* is a directory.
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* 7) truncate(2) returns -1 and sets errno to EFBIG if the argument length
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* is larger than the maximum file size.
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* 8) truncate(2) returns -1 and sets errno to ELOOP if too many symbolic
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* links were encountered in translating the pathname.
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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 <fcntl.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include <pwd.h>
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#include <sys/resource.h>
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#include "test.h"
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#include "safe_macros.h"
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#define TEST_FILE1 "testfile"
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#define TEST_FILE2 "t_file/testfile"
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#define TEST_FILE3 "testfile3"
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#define TEST_SYM1 "testsymlink1"
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#define TEST_SYM2 "testsymlink2"
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#define TEST_DIR1 "testdir"
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#define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
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#define NEW_MODE S_IRUSR | S_IRGRP | S_IROTH
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#define DIR_MODE S_IRWXU
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#define TRUNC_LEN 256
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#define MAX_FSIZE (16*1024*1024)
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static char long_pathname[PATH_MAX + 2];
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static struct test_case_t {
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char *pathname;
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off_t length;
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int exp_errno;
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} test_cases[] = {
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{ TEST_FILE1, TRUNC_LEN, EACCES },
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{ TEST_FILE2, TRUNC_LEN, ENOTDIR },
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{ NULL, TRUNC_LEN, EFAULT },
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{ long_pathname, TRUNC_LEN, ENAMETOOLONG },
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{ "", TRUNC_LEN, ENOENT },
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{ TEST_DIR1, TRUNC_LEN, EISDIR },
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{ TEST_FILE3, MAX_FSIZE*2, EFBIG },
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{ TEST_SYM1, TRUNC_LEN, ELOOP }
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};
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static void setup(void);
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static void cleanup(void);
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static void truncate_verify(struct test_case_t *);
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char *TCID = "truncate03";
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int TST_TOTAL = ARRAY_SIZE(test_cases);
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int main(int ac, char **av)
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{
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int i, lc;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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for (i = 0; i < TST_TOTAL; i++)
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truncate_verify(&test_cases[i]);
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}
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cleanup();
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tst_exit();
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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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struct rlimit rlim;
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sigset_t signalset;
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int n;
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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tst_require_root();
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ltpuser = SAFE_GETPWNAM(cleanup, "nobody");
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SAFE_SETEUID(cleanup, ltpuser->pw_uid);
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TEST_PAUSE;
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tst_tmpdir();
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SAFE_TOUCH(cleanup, TEST_FILE1, NEW_MODE, NULL);
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SAFE_TOUCH(cleanup, "t_file", FILE_MODE, NULL);
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memset(long_pathname, 'a', PATH_MAX + 1);
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SAFE_MKDIR(cleanup, TEST_DIR1, DIR_MODE);
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SAFE_TOUCH(cleanup, TEST_FILE3, FILE_MODE, NULL);
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SAFE_SYMLINK(cleanup, TEST_SYM1, TEST_SYM2);
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SAFE_SYMLINK(cleanup, TEST_SYM2, TEST_SYM1);
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rlim.rlim_cur = MAX_FSIZE;
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rlim.rlim_max = MAX_FSIZE;
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SAFE_SETRLIMIT(cleanup, RLIMIT_FSIZE, &rlim);
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sigemptyset(&signalset);
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sigaddset(&signalset, SIGXFSZ);
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TEST(sigprocmask(SIG_BLOCK, &signalset, NULL));
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if (TEST_RETURN != 0)
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tst_brkm(TBROK | TTERRNO, cleanup, "sigprocmask");
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for (n = 0; n < TST_TOTAL; n++) {
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if (!test_cases[n].pathname)
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test_cases[n].pathname = tst_get_bad_addr(cleanup);
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}
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}
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void truncate_verify(struct test_case_t *tc)
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{
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TEST(truncate(tc->pathname, tc->length));
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if (TEST_RETURN != -1) {
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tst_resm(TFAIL, "truncate() returned %ld, "
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"expected -1, errno:%d", TEST_RETURN,
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tc->exp_errno);
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return;
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}
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if (TEST_ERRNO == tc->exp_errno) {
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tst_resm(TPASS | TTERRNO, "truncate() failed as expected");
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} else {
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tst_resm(TFAIL | TTERRNO,
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"truncate() failed unexpectedly; expected: %d - %s",
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tc->exp_errno, strerror(tc->exp_errno));
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}
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}
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void cleanup(void)
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{
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tst_rmdir();
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}
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