/******************************************************************************
*
* 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
* symlinkat01.c
*
* DESCRIPTION
* This test case will verify basic function of symlinkat
* added by kernel 2.6.16 or up.
*
* 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 <stdlib.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include "test.h"
#include "safe_macros.h"
#include "lapi/syscalls.h"
#define MYRETCODE -999
#ifndef AT_FDCWD
#define AT_FDCWD -100
#endif
struct test_struct;
static void setup();
static void cleanup();
static void setup_every_copy();
static void mysymlinkat_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"
static char dpathname[256] = "%s/" TEST_DIR2 "/" TEST_FILE1;
static int olddirfd, newdirfd = -1, cwd_fd = AT_FDCWD, stdinfd = 0, crapfd =
-1, deldirfd;
struct test_struct {
const char *oldfn;
int *newfd;
const char *newfn;
const char *referencefn1;
const char *referencefn2;
int expected_errno;
} test_desc[] = {
/* relative paths */
{
"../" TEST_DIR1 "/" TEST_FILE1, &newdirfd, TEST_FILE1,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* abs path at dst */
{
"../" TEST_DIR1 "/" TEST_FILE1, &newdirfd, dpathname,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* relative paths to cwd */
{
"../" TEST_DIR1 "/" TEST_FILE1, &cwd_fd,
TEST_DIR2 "/" TEST_FILE1, TEST_DIR1 "/" TEST_FILE1,
TEST_DIR2 "/" TEST_FILE1, 0},
/* abs path */
{
"../" TEST_DIR1 "/" TEST_FILE1, &cwd_fd, dpathname,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* relative paths to invalid */
{
"../" TEST_DIR1 "/" TEST_FILE1, &stdinfd,
TEST_DIR2 "/" TEST_FILE1, 0, 0, ENOTDIR},
/* abs path at dst */
{
"../" TEST_DIR1 "/" TEST_FILE1, &stdinfd, dpathname,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* relative paths to crap */
{
"../" TEST_DIR1 "/" TEST_FILE1, &crapfd,
TEST_DIR2 "/" TEST_FILE1, 0, 0, EBADF},
/* abs path at dst */
{
"../" TEST_DIR1 "/" TEST_FILE1, &crapfd, dpathname,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* relative paths to deleted */
{
"../" TEST_DIR1 "/" TEST_FILE1, &deldirfd,
TEST_DIR2 "/" TEST_FILE1, 0, 0, ENOENT},
/* abs path at dst */
{
"../" TEST_DIR1 "/" TEST_FILE1, &deldirfd, dpathname,
TEST_DIR1 "/" TEST_FILE1, TEST_DIR2 "/" TEST_FILE1, 0},
/* fifo link */
/* { TEST_FIFO, &newdirfd, TEST_FILE1, TEST_DIR1"/"TEST_FIFO, TEST_DIR2"/"TEST_FILE1, 0 }, */
};
char *TCID = "symlinkat01";
int TST_TOTAL = sizeof(test_desc) / sizeof(*test_desc);
static int mysymlinkat(const char *oldfilename,
int newdirfd, const char *newfilename)
{
return ltp_syscall(__NR_symlinkat, oldfilename, newdirfd, newfilename);
}
int main(int ac, char **av)
{
int lc;
int i;
/* Disable test if the version of the kernel is less than 2.6.16 */
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();
mysymlinkat_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 mysymlinkat_test(struct test_struct *desc)
{
int fd;
TEST(mysymlinkat(desc->oldfn, *desc->newfd, desc->newfn));
/* check return code */
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, "Test passed");
else
tst_resm(TFAIL,
"The link file's content isn't as same as the original file's "
"although symlinkat returned 0");
} else {
tst_resm(TPASS,
"symlinkat() returned the expected errno %d: %s",
TEST_ERRNO, strerror(TEST_ERRNO));
}
} else {
tst_resm(TFAIL,
TEST_RETURN ==
0 ? "symlinkat() surprisingly succeeded" :
"symlinkat() Failed, errno=%d : %s", TEST_ERRNO,
strerror(TEST_ERRNO));
}
}
static void setup(void)
{
char *tmp;
int fd;
tst_sig(NOFORK, DEF_HANDLER, cleanup);
tst_tmpdir();
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);
/* gratuitous memory leak here */
tmp = strdup(dpathname);
snprintf(dpathname, sizeof(dpathname), tmp, get_current_dir_name());
TEST_PAUSE;
}
static void cleanup(void)
{
tst_rmdir();
}