141 lines
3.1 KiB
C
141 lines
3.1 KiB
C
/*
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* Copyright (c) 2014 Fujitsu Ltd.
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* Author: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program.
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*/
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/*
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* Test Description:
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* Verify that,
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* The flag of fchownat() is AT_SYMLINK_NOFOLLOW and the pathname would
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* not be dereferenced if the pathname is a symbolic link.
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*/
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#define _GNU_SOURCE
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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 <unistd.h>
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#include <stdlib.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 "fchownat.h"
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#include "lapi/fcntl.h"
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#define TESTFILE "testfile"
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#define TESTFILE_LINK "testfile_link"
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char *TCID = "fchownat02";
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int TST_TOTAL = 1;
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static int dir_fd;
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static uid_t set_uid = 1000;
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static gid_t set_gid = 1000;
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static void setup(void);
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static void cleanup(void);
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static void test_verify(void);
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static void fchownat_verify(void);
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int main(int ac, char **av)
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{
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int lc;
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int 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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tst_count = 0;
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for (i = 0; i < TST_TOTAL; i++)
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fchownat_verify();
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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 stat c_buf, l_buf;
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if ((tst_kvercmp(2, 6, 16)) < 0)
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tst_brkm(TCONF, NULL, "This test needs kernel 2.6.16 or newer");
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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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dir_fd = SAFE_OPEN(cleanup, "./", O_DIRECTORY);
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SAFE_TOUCH(cleanup, TESTFILE, 0600, NULL);
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SAFE_SYMLINK(cleanup, TESTFILE, TESTFILE_LINK);
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SAFE_STAT(cleanup, TESTFILE_LINK, &c_buf);
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SAFE_LSTAT(cleanup, TESTFILE_LINK, &l_buf);
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if (l_buf.st_uid == set_uid || l_buf.st_gid == set_gid) {
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tst_brkm(TBROK | TERRNO, cleanup,
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"link_uid(%d) == set_uid(%d) or link_gid(%d) == "
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"set_gid(%d)", l_buf.st_uid, set_uid, l_buf.st_gid,
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set_gid);
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}
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}
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static void fchownat_verify(void)
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{
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TEST(fchownat(dir_fd, TESTFILE_LINK, set_uid, set_gid,
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AT_SYMLINK_NOFOLLOW));
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if (TEST_RETURN != 0) {
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tst_resm(TFAIL | TTERRNO, "fchownat() failed, errno=%d : %s",
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TEST_ERRNO, strerror(TEST_ERRNO));
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} else {
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test_verify();
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}
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}
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static void test_verify(void)
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{
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struct stat c_buf, l_buf;
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SAFE_STAT(cleanup, TESTFILE_LINK, &c_buf);
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SAFE_LSTAT(cleanup, TESTFILE_LINK, &l_buf);
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if (c_buf.st_uid != set_uid && l_buf.st_uid == set_uid &&
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c_buf.st_gid != set_gid && l_buf.st_gid == set_gid) {
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tst_resm(TPASS, "fchownat() test AT_SYMLINK_NOFOLLOW success");
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} else {
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tst_resm(TFAIL,
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"fchownat() test AT_SYMLINK_NOFOLLOW fail with uid=%d "
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"link_uid=%d set_uid=%d | gid=%d link_gid=%d "
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"set_gid=%d", c_buf.st_uid, l_buf.st_uid, set_uid,
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c_buf.st_gid, l_buf.st_gid, set_gid);
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}
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}
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static void cleanup(void)
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{
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tst_rmdir();
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}
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