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119 lines
3.0 KiB
119 lines
3.0 KiB
7 months ago
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/*
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* Copyright (C) Bull S.A. 2001
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* Copyright (c) International Business Machines Corp., 2001
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* 06/2002 Ported by Jacky Malcles
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* Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz>
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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
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Verify that, link() fails with -1 and sets errno to EACCES when one of the
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* directories in oldpath or newpath did not allow search (execute) permission.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.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 <sys/types.h>
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#include <sys/stat.h>
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#include <pwd.h>
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#include "test.h"
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#include "safe_macros.h"
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#define MODE_TO S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IXGRP|S_IXOTH|S_IROTH|S_IWOTH
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#define MODE_TE S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH
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#define MODE_RWX S_IRWXU | S_IRWXG | S_IRWXO
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#define DIR_TEMP "testdir_1"
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#define TEST_FILE2 "testdir_1/tfile_2"
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#define NEW_TEST_FILE2 "testdir_1/new_tfile_2"
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static void setup(void);
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static void cleanup(void);
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char *TCID = "link07";
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int TST_TOTAL = 1;
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int main(int ac, char **av)
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{
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int 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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TEST(link(TEST_FILE2, NEW_TEST_FILE2));
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/* Check return code from link(2) */
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if (TEST_RETURN != -1) {
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tst_resm(TFAIL | TTERRNO, "link() returned %ld,"
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"expected -1, errno=%d", TEST_RETURN, EACCES);
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} else {
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if (TEST_ERRNO == EACCES) {
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tst_resm(TPASS | TTERRNO,
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"link() fails with expected error");
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} else {
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tst_resm(TFAIL | TTERRNO, "link() failed"
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", expected errno=%d (EACCES)",
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EACCES);
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}
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}
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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struct passwd *nobody_pwd;
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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tst_require_root();
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TEST_PAUSE;
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tst_tmpdir();
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/* Modify mode permissions on test directory */
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SAFE_CHMOD(cleanup, ".", MODE_TO);
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SAFE_MKDIR(cleanup, DIR_TEMP, MODE_RWX);
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SAFE_TOUCH(cleanup, TEST_FILE2, 0666, NULL);
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/* Modify mode permissions on test directory - test conditions */
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SAFE_CHMOD(cleanup, DIR_TEMP, MODE_TE);
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nobody_pwd = SAFE_GETPWNAM(cleanup, "nobody");
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SAFE_SETEUID(cleanup, nobody_pwd->pw_uid);
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}
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static void cleanup(void)
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{
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if (seteuid(0))
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tst_resm(TWARN | TERRNO, "seteuid(o) failed");
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tst_rmdir();
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}
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