254 lines
6.9 KiB
C
254 lines
6.9 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2006
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* Author: Yi Yang <yyangcdl@cn.ibm.com>
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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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* Description:
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* Verify that,
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* 1) renameat(2) returns -1 and sets errno to EBADF if olddirfd
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* or newdirfd is not a valid file descriptor.
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* 2) renameat(2) returns -1 and sets errno to ENOTDIR if oldpath
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* is relative and olddirfd is a file descriptor referring to
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* a file other than a directory, or similar for newpath and
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* newdirfd.
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* 3) renameat(2) returns -1 and sets errno to ELOOP if too many
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* symbolic links were encountered in resolving oldpath or
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* newpath.
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* 4) renameat(2) returns -1 and sets errno to EROFS if the file
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* is on a read-only file system.
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* 5) renameat(2) returns -1 and sets errno to EMLINK if oldpath
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* already has the maximum number of links to it, or it is a
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* directory and the directory containing newpath has the
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* maximum number of links.
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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 <sys/time.h>
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#include <fcntl.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 <sys/mount.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "lapi/fcntl.h"
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#include "lapi/renameat.h"
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#define MNTPOINT "mntpoint"
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#define TESTDIR "testdir"
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#define NEW_TESTDIR "new_testdir"
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#define TESTDIR2 "/loopdir"
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#define NEW_TESTDIR2 "newloopdir"
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#define TESTDIR3 "emlinkdir"
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#define NEW_TESTDIR3 "testemlinkdir/new_emlinkdir"
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#define TESTFILE "testfile"
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#define NEW_TESTFILE "new_testfile"
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#define TESTFILE2 "testfile2"
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#define NEW_TESTFILE2 "new_testfile2"
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#define TESTFILE3 "testdir/testfile"
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#define TESTFILE4 "testfile4"
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#define TESTFILE5 "mntpoint/rofile"
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#define NEW_TESTFILE5 "mntpoint/newrofile"
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#define DIRMODE (S_IRWXU | S_IRWXG | S_IRWXO)
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#define FILEMODE (S_IRWXU | S_IRWXG | S_IRWXO)
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static int curfd = AT_FDCWD;
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static int olddirfd;
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static int newdirfd;
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static int badfd = 100;
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static int filefd;
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static char absoldpath[256];
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static char absnewpath[256];
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static char looppathname[sizeof(TESTDIR2) * 43] = ".";
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static int max_subdirs;
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static int mount_flag;
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static const char *device;
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static struct test_case_t {
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int *oldfdptr;
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const char *oldpath;
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int *newfdptr;
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const char *newpath;
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int exp_errno;
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} test_cases[] = {
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{ &curfd, TESTFILE, &curfd, NEW_TESTFILE, 0 },
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{ &olddirfd, TESTFILE, &newdirfd, NEW_TESTFILE, 0 },
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{ &olddirfd, absoldpath, &newdirfd, absnewpath, 0 },
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{ &badfd, TESTFILE, &badfd, NEW_TESTFILE, EBADF },
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{ &filefd, TESTFILE, &filefd, NEW_TESTFILE, ENOTDIR },
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{ &curfd, looppathname, &curfd, NEW_TESTDIR2, ELOOP },
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{ &curfd, TESTFILE5, &curfd, NEW_TESTFILE5, EROFS },
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{ &curfd, TESTDIR3, &curfd, NEW_TESTDIR3, EMLINK },
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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 renameat_verify(const struct test_case_t *);
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char *TCID = "renameat01";
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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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renameat_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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static void setup(void)
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{
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char *tmpdir;
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const char *fs_type;
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int i;
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if ((tst_kvercmp(2, 6, 16)) < 0) {
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tst_brkm(TCONF, NULL,
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"This test can only run on kernels that are "
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"2.6.16 and higher");
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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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tst_tmpdir();
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fs_type = tst_dev_fs_type();
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device = tst_acquire_device(cleanup);
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if (!device)
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tst_brkm(TCONF, cleanup, "Failed to obtain block device");
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TEST_PAUSE;
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SAFE_TOUCH(cleanup, TESTFILE, FILEMODE, NULL);
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SAFE_TOUCH(cleanup, TESTFILE2, FILEMODE, NULL);
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tmpdir = tst_get_tmpdir();
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sprintf(absoldpath, "%s/%s", tmpdir, TESTFILE2);
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sprintf(absnewpath, "%s/%s", tmpdir, NEW_TESTFILE2);
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free(tmpdir);
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SAFE_MKDIR(cleanup, TESTDIR, DIRMODE);
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SAFE_TOUCH(cleanup, TESTFILE3, FILEMODE, NULL);
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SAFE_MKDIR(cleanup, NEW_TESTDIR, DIRMODE);
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olddirfd = SAFE_OPEN(cleanup, TESTDIR, O_DIRECTORY);
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newdirfd = SAFE_OPEN(cleanup, NEW_TESTDIR, O_DIRECTORY);
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filefd = SAFE_OPEN(cleanup, TESTFILE4,
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O_RDWR | O_CREAT, FILEMODE);
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/*
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* NOTE: the ELOOP test is written based on that the
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* consecutive symlinks limit in kernel is hardwired
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* to 40.
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*/
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SAFE_MKDIR(cleanup, "loopdir", DIRMODE);
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SAFE_SYMLINK(cleanup, "../loopdir", "loopdir/loopdir");
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for (i = 0; i < 43; i++)
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strcat(looppathname, TESTDIR2);
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tst_mkfs(cleanup, device, fs_type, NULL, NULL);
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SAFE_MKDIR(cleanup, MNTPOINT, DIRMODE);
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SAFE_MOUNT(cleanup, device, MNTPOINT, fs_type, 0, NULL);
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mount_flag = 1;
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SAFE_TOUCH(cleanup, TESTFILE5, FILEMODE, NULL);
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SAFE_MOUNT(cleanup, device, MNTPOINT, fs_type, MS_REMOUNT | MS_RDONLY,
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NULL);
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SAFE_MKDIR(cleanup, TESTDIR3, DIRMODE);
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max_subdirs = tst_fs_fill_subdirs(cleanup, "testemlinkdir");
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}
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static void renameat_verify(const struct test_case_t *tc)
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{
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if (tc->exp_errno == EMLINK && max_subdirs == 0) {
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tst_resm(TCONF, "EMLINK test is not appropriate");
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return;
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}
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TEST(renameat(*(tc->oldfdptr), tc->oldpath,
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*(tc->newfdptr), tc->newpath));
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if (tc->exp_errno && TEST_RETURN != -1) {
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tst_resm(TFAIL, "renameat() succeeded unexpectedly");
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return;
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}
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if (tc->exp_errno == 0 && TEST_RETURN != 0) {
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tst_resm(TFAIL | TTERRNO, "renameat() failed unexpectedly");
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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,
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"renameat() returned the expected value");
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} else {
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tst_resm(TFAIL | TTERRNO,
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"renameat() got unexpected return value; expected: "
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"%d - %s", tc->exp_errno,
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strerror(tc->exp_errno));
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}
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if (TEST_ERRNO == 0 && renameat(*(tc->newfdptr), tc->newpath,
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*(tc->oldfdptr), tc->oldpath) < 0) {
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tst_brkm(TBROK | TERRNO, cleanup, "renameat(%d, %s, "
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"%d, %s) failed.", *(tc->newfdptr), tc->newpath,
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*(tc->oldfdptr), tc->oldpath);
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}
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}
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static void cleanup(void)
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{
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if (olddirfd > 0 && close(olddirfd) < 0)
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tst_resm(TWARN | TERRNO, "close olddirfd failed");
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if (newdirfd > 0 && close(newdirfd) < 0)
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tst_resm(TWARN | TERRNO, "close newdirfd failed");
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if (filefd > 0 && close(filefd) < 0)
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tst_resm(TWARN | TERRNO, "close filefd failed");
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if (mount_flag && tst_umount(MNTPOINT) < 0)
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tst_resm(TWARN | TERRNO, "umount %s failed", MNTPOINT);
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if (device)
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tst_release_device(device);
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tst_rmdir();
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}
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