| /* |
| * Copyright (c) International Business Machines Corp., 2001 |
| * 07/2001 Ported by Wayne Boyer |
| * Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Test Description: |
| * Verify that, when fchown(2) invoked by super-user to change the owner and |
| * group of a file specified by file descriptor to any numeric |
| * owner(uid)/group(gid) values, |
| * - clears setuid and setgid bits set on an executable file. |
| * - preserves setgid bit set on a non-group-executable file. |
| */ |
| |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/fcntl.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <signal.h> |
| |
| #include "test.h" |
| #include "safe_macros.h" |
| #include "compat_16.h" |
| |
| #define FILE_MODE S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH |
| #define NEW_PERMS1 S_IFREG | S_IRWXU | S_IRWXG | S_ISUID | S_ISGID |
| #define NEW_PERMS2 S_IFREG | S_IRWXU | S_ISGID |
| #define EXP_PERMS S_IFREG | S_IRWXU | S_IRWXG |
| #define TESTFILE1 "testfile1" |
| #define TESTFILE2 "testfile2" |
| |
| TCID_DEFINE(fchown02); |
| int TST_TOTAL = 2; |
| static int fd1; |
| static int fd2; |
| |
| struct test_case { |
| int *fd; |
| char *pathname; |
| char *desc; |
| uid_t user_id; |
| gid_t group_id; |
| int test_flag; |
| } tc[] = { |
| {&fd1, TESTFILE1, "Setuid/Setgid bits cleared", 700, 701, 1}, |
| {&fd2, TESTFILE2, "Setgid bit not cleared", 700, 701, 2}, |
| {0, NULL, NULL, 0, 0, 0} |
| }; |
| |
| static void setup(void); |
| static void cleanup(void); |
| |
| static void verify_fchown(struct test_case *t) |
| { |
| struct stat stat_buf; |
| |
| TEST(FCHOWN(cleanup, *t->fd, t->user_id, t->group_id)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "fchown() Fails on %s", t->pathname); |
| return; |
| } |
| |
| SAFE_FSTAT(cleanup, *t->fd, &stat_buf); |
| |
| if ((stat_buf.st_uid != t->user_id) || |
| (stat_buf.st_gid != t->group_id)) { |
| tst_resm(TFAIL, |
| "%s: Incorrect ownership expected %d %d, have %d %d", |
| t->pathname, t->user_id, t->group_id, |
| stat_buf.st_uid, stat_buf.st_gid); |
| } |
| |
| switch (t->test_flag) { |
| case 1: |
| if (((stat_buf.st_mode & (S_ISUID | S_ISGID)))) { |
| tst_resm(TFAIL, "%s: Incorrect mode " |
| "permissions %#o, Expected " |
| "%#o", t->pathname, NEW_PERMS1, |
| EXP_PERMS); |
| return; |
| } |
| break; |
| case 2: |
| if ((!(stat_buf.st_mode & S_ISGID))) { |
| tst_resm(TFAIL, |
| "%s: Incorrect mode " |
| "permissions %#o, Expected " |
| "%#o", t->pathname, |
| stat_buf.st_mode, NEW_PERMS2); |
| return; |
| } |
| break; |
| } |
| |
| tst_resm(TPASS, "fchown() on %s succeeds : %s", t->pathname, t->desc); |
| } |
| |
| int main(int ac, char **av) |
| { |
| int lc, i; |
| const char *msg; |
| |
| msg = parse_opts(ac, av, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| for (i = 0; tc[i].desc != NULL; i++) |
| verify_fchown(tc + i); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| tst_require_root(NULL); |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| fd1 = SAFE_OPEN(cleanup, TESTFILE1, O_RDWR | O_CREAT, FILE_MODE); |
| SAFE_CHMOD(cleanup, TESTFILE1, NEW_PERMS1); |
| fd2 = SAFE_OPEN(cleanup, TESTFILE2, O_RDWR | O_CREAT, FILE_MODE); |
| SAFE_CHMOD(cleanup, TESTFILE2, NEW_PERMS2); |
| } |
| |
| static void cleanup(void) |
| { |
| if (fd1 > 0 && close(fd1)) |
| tst_resm(TWARN | TERRNO, "Failed to close fd1"); |
| |
| if (fd2 > 0 && close(fd2)) |
| tst_resm(TWARN | TERRNO, "Failed to close fd2"); |
| |
| tst_rmdir(); |
| } |