/******************************************************************************
*
* Copyright (c) International Business Machines Corp., 2006
*
* 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
*
* NAME
* linkat01.c
*
* DESCRIPTION
* This test case will verify basic function of linkat
* added by kernel 2.6.16 or up.
*
* USAGE: <for command-line>
* linkat01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-p]
* where:
* -c n : Run n copies simultaneously.
* -e : Turn on errno logging.
* -i n : Execute test n times.
* -I x : Execute test for x seconds.
* -p : Pause for SIGUSR1 before starting
* -P x : Pause for x seconds between iterations.
* -t : Turn on syscall timing.
*
* Author
* Yi Yang <yyangcdl@cn.ibm.com>
*
* History
* 08/25/2006 Created first by Yi Yang <yyangcdl@cn.ibm.com>
*
*****************************************************************************/
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <inttypes.h>
#include <limits.h>
#include "test.h"
#include "lapi/syscalls.h"
#include "safe_macros.h"
#ifndef AT_FDCWD
#define AT_FDCWD -100
#endif
#ifndef AT_SYMLINK_FOLLOW
#define AT_SYMLINK_FOLLOW 0x400
#endif
struct test_struct;
static void setup();
static void cleanup();
static void setup_every_copy();
static void mylinkat_test(struct test_struct *desc);
#define TEST_DIR1 "olddir"
#define TEST_DIR2 "newdir"
#define TEST_DIR3 "deldir"
#define TEST_FILE1 "oldfile"
#define TEST_FILE2 "newfile"
#define TEST_FIFO "fifo"
#define DPATHNAME_FMT "%s/" TEST_DIR2 "/" TEST_FILE1
#define SPATHNAME_FMT "%s/" TEST_DIR1 "/" TEST_FILE1
static char dpathname[PATH_MAX];
static char spathname[PATH_MAX];
static int olddirfd, newdirfd = -1, cwd_fd = AT_FDCWD, stdinfd = 0, badfd =
-1, deldirfd;
struct test_struct {
int *oldfd;
const char *oldfn;
int *newfd;
const char *newfn;
int flags;
const char *referencefn1;
const char *referencefn2;
int expected_errno;
} test_desc[] = {
/* 1. relative paths */
{
&olddirfd, TEST_FILE1, &newdirfd, TEST_FILE1, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 2. abs path at source */
{
&olddirfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
/* 3. abs path at dst */
{
&olddirfd, TEST_FILE1, &newdirfd, dpathname, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 4. relative paths to cwd */
{
&cwd_fd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 5. relative paths to cwd */
{
&olddirfd, TEST_FILE1, &cwd_fd, TEST_DIR2 "/" TEST_FILE1, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 6. abs path at source */
{
&cwd_fd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
/* 7. abs path at dst */
{
&olddirfd, TEST_FILE1, &cwd_fd, dpathname, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 8. relative paths to invalid */
{
&stdinfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
0, 0, ENOTDIR},
/* 9. relative paths to invalid */
{
&olddirfd, TEST_FILE1, &stdinfd, TEST_DIR2 "/" TEST_FILE1, 0,
0, 0, ENOTDIR},
/* 10. abs path at source */
{
&stdinfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
/* 11. abs path at dst */
{
&olddirfd, TEST_FILE1, &stdinfd, dpathname, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 12. relative paths to bad */
{
&badfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
0, 0, EBADF},
/* 13. relative paths to bad */
{
&olddirfd, TEST_FILE1, &badfd, TEST_DIR2 "/" TEST_FILE1, 0,
0, 0, EBADF},
/* 14. abs path at source */
{
&badfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
/* 15. abs path at dst */
{
&olddirfd, TEST_FILE1, &badfd, dpathname, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 16. relative paths to deleted */
{
&deldirfd, TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1, 0,
0, 0, ENOENT},
/* 17. relative paths to deleted */
{
&olddirfd, TEST_FILE1, &deldirfd, TEST_DIR2 "/" TEST_FILE1, 0,
0, 0, ENOENT},
/* 18. abs path at source */
{
&deldirfd, spathname, &newdirfd, TEST_FILE1, 0, 0, 0, 0},
/* 19. abs path at dst */
{
&olddirfd, TEST_FILE1, &deldirfd, dpathname, 0,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* 20. x-device link */
{
&cwd_fd, "/proc/cpuinfo", &newdirfd, TEST_FILE1, 0, 0, 0, EXDEV},
/* 21. directory link */
{
&olddirfd, ".", &newdirfd, TEST_FILE1, 0, 0, 0, EPERM},
/* 22. invalid flag */
{
&olddirfd, TEST_FILE1, &newdirfd, TEST_FILE1, 1, 0, 0, EINVAL},
/* 23. fifo link */
/* XXX (garrcoop): Removed because it hangs the overall test. Need to
* find a legitimate means to exercise this functionality, if in fact
* it's a valid testcase -- which it should be.
*/
/* { &olddirfd, TEST_FIFO, &newdirfd, TEST_FILE1, 0,
TEST_DIR1"/"TEST_FIFO, TEST_DIR2"/"TEST_FILE1, 0 } */
};
char *TCID = "linkat01";
int TST_TOTAL = sizeof(test_desc) / sizeof(*test_desc);
static int mylinkat(int olddirfd, const char *oldfilename, int newdirfd,
const char *newfilename, int flags)
{
return ltp_syscall(__NR_linkat, olddirfd, oldfilename, newdirfd,
newfilename, flags);
}
int main(int ac, char **av)
{
int lc;
int i;
if ((tst_kvercmp(2, 6, 16)) < 0) {
tst_resm(TWARN, "This test can only run on kernels that are ");
tst_resm(TWARN, "2.6.16 and higher");
exit(0);
}
tst_parse_opts(ac, av, NULL, NULL);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
for (i = 0; i < TST_TOTAL; i++) {
setup_every_copy();
mylinkat_test(&test_desc[i]);
}
}
cleanup();
tst_exit();
}
static void setup_every_copy(void)
{
close(newdirfd);
unlink(dpathname);
rmdir(TEST_DIR2);
SAFE_MKDIR(cleanup, TEST_DIR2, 0700);
newdirfd = SAFE_OPEN(cleanup, TEST_DIR2, O_DIRECTORY);
}
static void mylinkat_test(struct test_struct *desc)
{
int fd;
TEST(mylinkat
(*desc->oldfd, desc->oldfn, *desc->newfd, desc->newfn,
desc->flags));
if (TEST_ERRNO == desc->expected_errno) {
if (TEST_RETURN == 0 && desc->referencefn1 != NULL) {
int tnum = rand(), vnum = ~tnum;
fd = SAFE_OPEN(cleanup, desc->referencefn1,
O_RDWR);
SAFE_WRITE(cleanup, 1, fd, &tnum, sizeof(tnum));
SAFE_CLOSE(cleanup, fd);
fd = SAFE_OPEN(cleanup, desc->referencefn2,
O_RDONLY);
SAFE_READ(cleanup, 1, fd, &vnum, sizeof(vnum));
SAFE_CLOSE(cleanup, fd);
if (tnum == vnum)
tst_resm(TPASS,
"linkat is functionality correct");
else {
tst_resm(TFAIL,
"The link file's content isn't "
"as same as the original file's "
"although linkat returned 0");
}
} else {
if (TEST_RETURN == 0)
tst_resm(TPASS,
"linkat succeeded as expected");
else
tst_resm(TPASS | TTERRNO,
"linkat failed as expected");
}
} else {
if (TEST_RETURN == 0)
tst_resm(TFAIL, "linkat succeeded unexpectedly");
else
tst_resm(TFAIL | TTERRNO,
"linkat failed unexpectedly; expected %d - %s",
desc->expected_errno,
strerror(desc->expected_errno));
}
}
void setup(void)
{
char *cwd;
int fd;
tst_sig(NOFORK, DEF_HANDLER, cleanup);
tst_tmpdir();
cwd = get_current_dir_name();
if (cwd == NULL) {
tst_brkm(TFAIL | TERRNO, cleanup,
"Failed to get current working directory");
}
SAFE_MKDIR(cleanup, TEST_DIR1, 0700);
SAFE_MKDIR(cleanup, TEST_DIR3, 0700);
olddirfd = SAFE_OPEN(cleanup, TEST_DIR1, O_DIRECTORY);
deldirfd = SAFE_OPEN(cleanup, TEST_DIR3, O_DIRECTORY);
SAFE_RMDIR(cleanup, TEST_DIR3);
fd = SAFE_OPEN(cleanup, TEST_DIR1 "/" TEST_FILE1, O_CREAT | O_EXCL, 0600);
SAFE_CLOSE(cleanup, fd);
SAFE_MKFIFO(cleanup, TEST_DIR1 "/" TEST_FIFO, 0600);
snprintf(dpathname, sizeof(dpathname), DPATHNAME_FMT, cwd);
snprintf(spathname, sizeof(spathname), SPATHNAME_FMT, cwd);
free(cwd);
}
static void cleanup(void)
{
tst_rmdir();
}