159 lines
3.9 KiB
C
159 lines
3.9 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2001
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* 07/2001 Ported by Wayne Boyer
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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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* Test Description:
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* Verify that, when fchown(2) invoked by super-user to change the owner and
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* group of a file specified by file descriptor to any numeric
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* owner(uid)/group(gid) values,
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* - clears setuid and setgid bits set on an executable file.
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* - preserves setgid bit set on a non-group-executable file.
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*/
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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 <errno.h>
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#include <string.h>
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#include <signal.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "compat_16.h"
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#define FILE_MODE S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
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#define NEW_PERMS1 S_IFREG | S_IRWXU | S_IRWXG | S_ISUID | S_ISGID
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#define NEW_PERMS2 S_IFREG | S_IRWXU | S_ISGID
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#define EXP_PERMS S_IFREG | S_IRWXU | S_IRWXG
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#define TESTFILE1 "testfile1"
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#define TESTFILE2 "testfile2"
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TCID_DEFINE(fchown02);
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int TST_TOTAL = 2;
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static int fd1;
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static int fd2;
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struct test_case {
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int *fd;
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char *pathname;
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char *desc;
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uid_t user_id;
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gid_t group_id;
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int test_flag;
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} tc[] = {
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{&fd1, TESTFILE1, "Setuid/Setgid bits cleared", 700, 701, 1},
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{&fd2, TESTFILE2, "Setgid bit not cleared", 700, 701, 2},
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{0, NULL, NULL, 0, 0, 0}
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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 verify_fchown(struct test_case *t)
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{
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struct stat stat_buf;
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TEST(FCHOWN(cleanup, *t->fd, t->user_id, t->group_id));
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if (TEST_RETURN == -1) {
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tst_resm(TFAIL | TTERRNO, "fchown() Fails on %s", t->pathname);
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return;
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}
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SAFE_FSTAT(cleanup, *t->fd, &stat_buf);
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if ((stat_buf.st_uid != t->user_id) ||
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(stat_buf.st_gid != t->group_id)) {
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tst_resm(TFAIL,
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"%s: Incorrect ownership expected %d %d, have %d %d",
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t->pathname, t->user_id, t->group_id,
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stat_buf.st_uid, stat_buf.st_gid);
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}
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switch (t->test_flag) {
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case 1:
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if (((stat_buf.st_mode & (S_ISUID | S_ISGID)))) {
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tst_resm(TFAIL, "%s: Incorrect mode "
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"permissions %#o, Expected "
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"%#o", t->pathname, NEW_PERMS1,
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EXP_PERMS);
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return;
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}
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break;
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case 2:
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if ((!(stat_buf.st_mode & S_ISGID))) {
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tst_resm(TFAIL,
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"%s: Incorrect mode "
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"permissions %#o, Expected "
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"%#o", t->pathname,
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stat_buf.st_mode, NEW_PERMS2);
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return;
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}
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break;
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}
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tst_resm(TPASS, "fchown() on %s succeeds : %s", t->pathname, t->desc);
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}
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int main(int ac, char **av)
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{
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int lc, i;
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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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for (i = 0; tc[i].desc != NULL; i++)
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verify_fchown(tc + i);
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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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tst_require_root();
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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tst_tmpdir();
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fd1 = SAFE_OPEN(cleanup, TESTFILE1, O_RDWR | O_CREAT, FILE_MODE);
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SAFE_CHMOD(cleanup, TESTFILE1, NEW_PERMS1);
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fd2 = SAFE_OPEN(cleanup, TESTFILE2, O_RDWR | O_CREAT, FILE_MODE);
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SAFE_CHMOD(cleanup, TESTFILE2, NEW_PERMS2);
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}
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static void cleanup(void)
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{
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if (fd1 > 0 && close(fd1))
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tst_resm(TWARN | TERRNO, "Failed to close fd1");
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if (fd2 > 0 && close(fd2))
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tst_resm(TWARN | TERRNO, "Failed to close fd2");
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tst_rmdir();
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}
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