Hi,
I have developed test cases for sync_file_range() system call which will
do the basic sanity (error) checking for the system call. These tests
have to be run on 2.6.17 kernel and above.
The test cases have been currently tested only on x86 and x86_64
architecture.
Also, I have hard coded the system call number in the test case for
review purposes and will be later on moving it to
linux_syscall_numbers.h file in the LTP framework.
Please review the test cases and provide your comments so that I can
improve the same.
Thanks,
Poornima.
/******************************************************************************
* syncfilerange01.c
* Copyright (c) International Business Machines Corp., 2008
* Email: [EMAIL PROTECTED]
*****************************************************************************/
/******************************************************************************/
/*
*/
/* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA */
/*
*/
/******************************************************************************/
/*****************************************************************************
* TEST IDENTIFIER : syncfilerange01
*
* EXECUTED BY : anyone
*
* TEST TITLE : Checks for Errors from sync_file_range()
*
* TEST CASE TOTAL : 5
*
* CPU ARCHITECTURES : All
*
* AUTHOR : B N Poornima
*
* DATE STARTED : 21/07/2008
*
* TEST CASES
* (Tests sync_file_range() for different test cases as reported in
the man
* page)
*
* INPUT SPECIFICATIONS
* No input needs to be specified
* sync_file_data() in-puts are specified through test_data
*
* OUTPUT SPECIFICATIONS
* sync_file_data() error message matches with the expected
error
* message.
*
*
* ENVIRONMENTAL NEEDS
* None
*
* SPECIAL PROCEDURAL REQUIREMENTS
* None
*
* DETAILED DESCRIPTION
* This is a test case for sync_file_range() system call.
* This test suite tests various error messages from the
system call
* If the error message received matches with the expected
* test is considered passed else test fails
*
* Total 5 Test Cases :-
* Various error messages from the man page
*
* Setup:
* Setup files on which sync_file_range is to be called
*
* Test:
* Loop if the proper options are given.
* Execute system call
* Check return code.
* If error obtained matches with the expected error
* PASS the test, otherwise TEST FAILS
*
* Cleanup:
* Cleanup the temporary folder
*
******************************************************************************/
#define _GNU_SOURCE
/* Standard Include Files */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/utsname.h>
#include <unistd.h>
/* Harness Specific Include Files. */
#include "test.h"
#include "usctest.h"
#include "linux_syscall_numbers.h"
#ifndef __NR_sync_file_range
#define __NR_sync_file_range -1 //DUMMY VALUE
int arch_support = 0; //Architecure is not supported
#else
int arch_support = 1; //Architecture is supported
#endif
#ifdef __powerpc64__
# ifndef __NR_sync_file_range2
# define __NR_sync_file_range2 308
#endif
#endif
#ifndef SYNC_FILE_RANGE_WAIT_BEFORE
#define SYNC_FILE_RANGE_WAIT_BEFORE 1
#define SYNC_FILE_RANGE_WRITE 2 //DUMMY VALUES
#define SYNC_FILE_RANGE_WAIT_AFTER 4
#endif
#define SYNC_FILE_RANGE_INVALID 8
/* Extern Global Variables */
extern int Tst_count; /* counter for tst_xxx
routines. */
extern char *TESTDIR; /* temporary dir created by
tst_tmpdir() */
/* Global Variables */
char *TCID = "syncfilerange01"; /* test program identifier. */
char filename[255]; /* file used for testing */
char spl_file[] = "/dev/null";
int filed, sfd; /* normal and special fds */
int bfd = -1; /* Bad file descriptor */
struct test_data_t
{
int *fd;
off64_t offset;
off64_t nbytes;
unsigned int flags;
int error;
} test_data[] = {
{&bfd, 0, 1, SYNC_FILE_RANGE_WRITE, EBADF},
{&sfd, 0, 1, SYNC_FILE_RANGE_WAIT_AFTER, ESPIPE},
{&filed, -1, 1, SYNC_FILE_RANGE_WAIT_BEFORE, EINVAL},
{&filed, 0, -1, SYNC_FILE_RANGE_WRITE, EINVAL},
{&filed, 0, 1, SYNC_FILE_RANGE_INVALID, EINVAL}
};
int TST_TOTAL = sizeof(test_data) / sizeof(test_data[0]);
/* Extern Global Functions */
/******************************************************************************/
/*
*/
/* Function:
cleanup
*/
/*
*/
/* Description: Performs all one time clean up for this test on
successful */
/* completion, premature exit or failure. Closes all
temporary */
/* files, removes all temporary directories exits the test
with */
/* appropriate return code by calling tst_exit()
function. */
/*
*/
/* Input:
None.
*/
/*
*/
/* Output:
None.
*/
/*
*/
/* Return: On failure - Exits calling tst_exit(). Non '0' return
code. */
/* On success - Exits calling tst_exit(). With '0' return
code. */
/*
*/
/******************************************************************************/
extern void
cleanup()
{
/*
* print timing stats if that option was specified.
* print errno log if that option was specified.
*/
TEST_CLEANUP;
/* close the file we have open */
if (close(filed) == -1) {
tst_resm(TWARN, "close(%s) Failed, errno=%d : %s", filename,
errno, strerror(errno));
}
/* Remove tmp dir and all files in it */
tst_rmdir();
/* exit with return code appropriate for results */
tst_exit();
tst_exit();
}
/* Local Functions */
/******************************************************************************/
/*
*/
/* Function:
setup
*/
/*
*/
/* Description: Performs all one time setup for this test. This function
is */
/* typically used to capture signals, create temporary
dirs */
/* and temporary files that may be used in the course of
this */
/*
test.
*/
/*
*/
/* Input:
None.
*/
/*
*/
/*
*/
/* Output:
None.
*/
/*
*/
/* Return: On failure - Exits by calling
cleanup().
*/
/* On success - returns
0.
*/
/*
*/
/******************************************************************************/
void
setup()
{
/* capture signals */
tst_sig(NOFORK, DEF_HANDLER, cleanup);
/* Pause if that option was specified */
TEST_PAUSE;
/* make a temp directory and cd to it */
tst_tmpdir();
sprintf(filename,"tmpfile_%d",getpid());
if ((filed = open(filename,O_RDWR|O_CREAT,0700)) == -1) {
tst_brkm(TBROK, cleanup,
"open(%s, O_RDWR|O_CREAT,0700) Failed, errno=%d : %s",
filename, errno, strerror(errno));
sfd = open(spl_file, O_RDWR|O_CREAT, 0700);
}
return;
}
/*****************************************************************************
* Wraper function to call sync_file_range system call
******************************************************************************/
static inline long syncfilerange(int fd, off64_t offset, off64_t nbytes,
unsigned int flags)
{
#if defined(__powerpc64__) && (__WORDSIZE==32)
return syscall(__NR_sync_file_range2, fd, flags,
(int)(offset >>32), \
(int)offset, (int)(nbytes >>32),
(int)nbytes);
#elif defined(__powerpc64__) && (__WORDSIZE==64)
return syscall(__NR_sync_file_range2, fd, flags,
offset, nbytes);
#endif
return syscall(__NR_sync_file_range, fd, offset,
nbytes, flags);
return 0;
}
/******************************************************************************/
/*
*/
/* Function:
main
*/
/*
*/
/* Description: Entry point to this test-case. It parses all the command
line */
/* inputs, calls the global setup and executes the test. It
logs */
/* the test status and results appropriately using the LTP
API's */
/* On successful completion or premature failure, cleanup()
func */
/* is called and test exits with an appropriate return
code. */
/*
*/
/* Input: Describe input arguments to this
test-case
*/
/* -l - Number of
iteration
*/
/* -v - Prints verbose
output
*/
/* -V - Prints the version
number
*/
/*
*/
/* Exit: On failure - Exits by calling
cleanup().
*/
/* On success - exits with 0 exit
value.
*/
/*
*/
/******************************************************************************/
int
main(int ac, /* number of command line
parameters */
char **av) /* pointer to the array of the command line
parameters. */
{
int test_index = 0;
int lc;
char *msg;
/***************************************************************
parse standard options
********************************************************************/
if ( (msg=parse_opts(ac, av, (option_t *) NULL, NULL)) != (char
*) NULL )
tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
/* This test needs kernel version > 2.6.16 */
if ( !arch_support || (tst_kvercmp(2,6,17) < 0)) {
tst_resm(TWARN," System doesn't support execution of the
test");
exit(0);
}
/* perform global test setup, call setup() function. */
setup();
for (lc=0; TEST_LOOPING(lc); lc++) {
/* reset Tst_count in case we are looping. */
Tst_count=0;
for(test_index = 0 ; test_index < TST_TOTAL; test_index ++)
{
TEST(syncfilerange(*(test_data[test_index].fd),
test_data[test_index].offset, \
test_data[test_index].nbytes,
test_data[test_index].flags));
if (TEST_RETURN != -1) {
tst_resm(TFAIL, "call succeeded
unexpectedly");
continue;
}
TEST_ERROR_LOG(TEST_ERRNO);
if (TEST_ERRNO == test_data[test_index].error) {
tst_resm(TPASS, "expected failure - "
"errno = %d : %s", TEST_ERRNO,
strerror(TEST_ERRNO));
} else {
tst_resm(TFAIL, "unexpected error - %d :
%s - "
"expected %d", TEST_ERRNO,
strerror(TEST_ERRNO),
test_data[test_index].error);
}
}
}
cleanup();
return(0);
}
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