/******************************************************************************
* fallocate01.c
* Mon Dec 24 2007
* Copyright (c) International Business Machines Corp., 2007
* Emali : sharyathi@in.ibm.com
******************************************************************************/
/***************************************************************************
* 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 Library 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.
***************************************************************************/
/*****************************************************************************
*
* OS Test - International Business Machines Corp. 2007.
*
* TEST IDENTIFIER : fallocate01
*
* EXECUTED BY : anyone
*
* TEST TITLE : Basic test for fallocate()
*
* TEST CASE TOTAL : 2
*
* CPU ARCHITECTURES : PPC,X86, X86_64
*
* AUTHOR : Sharyathi Nagesh
*
* CO-PILOT :
*
* DATE STARTED : 24/12/2007
*
* TEST CASES
* (Working of fallocate under 2 modes)
* 1) DEFAULT 2)FALLOC_FL_KEEP_SIZE
*
* INPUT SPECIFICATIONS
* No input needs to be specified
* fallocate() in puts are generated randomly
*
* OUTPUT SPECIFICATIONS
* Output describing whether test cases passed or failed.
*
* ENVIRONMENTAL NEEDS
* Test Needs to be executed on file system supporting ext4
* LTP {TMP} Needs to be set to such a folder
*
* SPECIAL PROCEDURAL REQUIREMENTS
* None
*
* DETAILED DESCRIPTION
* This is a test case for fallocate() system call.
* This test suite tests basic working of fallocate under different modes
* It trys to fallocate memory blocks and write into that block
*
* Total 2 Test Cases :-
* (1) Test Case for DEFAULT MODE
* (2) Test Case for FALLOC_FL_KEEP_SIZE
*
* Setup:
* Setup file on which fallocate is to be called
* Set up 2 files for each mode
*
* Test:
* Loop if the proper options are given.
* Execute system call
* Check return code, if system call did fail
* lseek to some random location with in allocate block
* write data into the locattion Report if any error encountered
* PASS the test otherwise
*
* Cleanup:
* Cleanup the temporary folder
*
*************************************************************************/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <endian.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/utsname.h>
#include "test.h"
#include "safe_macros.h"
#include "lapi/fallocate.h"
#include "lapi/fcntl.h"
#define BLOCKS_WRITTEN 12
void get_blocksize(int);
void populate_files(int fd);
void runtest(int, int, loff_t);
char *TCID = "fallocate01";
char fname_mode1[255], fname_mode2[255]; /* Files used for testing */
int fd_mode1, fd_mode2;
int TST_TOTAL = 2;
loff_t block_size;
int buf_size;
/******************************************************************************
* 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.
******************************************************************************/
void cleanup(void)
{
if (close(fd_mode1) == -1)
tst_resm(TWARN | TERRNO, "close(%s) failed", fname_mode1);
if (close(fd_mode2) == -1)
tst_resm(TWARN | TERRNO, "close(%s) failed", fname_mode2);
tst_rmdir();
}
/*****************************************************************************
* Performs all one time setup for this test. This function is
* used to create temporary dirs and temporary files
* that may be used in the course of this test
******************************************************************************/
void setup(void)
{
/* Create temporary directories */
TEST_PAUSE;
tst_tmpdir();
sprintf(fname_mode1, "tfile_mode1_%d", getpid());
fd_mode1 = SAFE_OPEN(cleanup, fname_mode1, O_RDWR | O_CREAT, 0700);
get_blocksize(fd_mode1);
populate_files(fd_mode1);
sprintf(fname_mode2, "tfile_mode2_%d", getpid());
fd_mode2 = SAFE_OPEN(cleanup, fname_mode2, O_RDWR | O_CREAT, 0700);
populate_files(fd_mode2);
}
/*****************************************************************************
* Gets the block size for the file system
******************************************************************************/
void get_blocksize(int fd)
{
struct stat file_stat;
if (fstat(fd, &file_stat) < 0)
tst_resm(TFAIL | TERRNO,
"fstat failed while getting block_size");
block_size = file_stat.st_blksize;
buf_size = block_size;
}
/*****************************************************************************
* Writes data into the file
******************************************************************************/
void populate_files(int fd)
{
char buf[buf_size + 1];
int index;
int blocks;
int data;
for (blocks = 0; blocks < BLOCKS_WRITTEN; blocks++) {
for (index = 0; index < buf_size; index++)
buf[index] = 'A' + (index % 26);
buf[buf_size] = '\0';
if ((data = write(fd, buf, buf_size)) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "write failed");
}
}
int main(int ac, char **av)
{
loff_t expected_size;
int lc;
tst_parse_opts(ac, av, NULL, NULL);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
expected_size = BLOCKS_WRITTEN * block_size + block_size;
runtest(0, fd_mode1, expected_size);
expected_size = BLOCKS_WRITTEN * block_size;
runtest(FALLOC_FL_KEEP_SIZE, fd_mode2, expected_size);
}
cleanup();
tst_exit();
}
/*****************************************************************************
* Calls the system call, with appropriate parameters and writes data
******************************************************************************/
void runtest(int mode, int fd, loff_t expected_size)
{
loff_t offset;
loff_t len = block_size;
loff_t write_offset, lseek_offset;
offset = lseek(fd, 0, SEEK_END);
struct stat file_stat;
errno = 0;
TEST(fallocate(fd, mode, offset, len));
/* check return code */
if (TEST_RETURN != 0) {
if (TEST_ERRNO == EOPNOTSUPP || TEST_ERRNO == ENOSYS) {
tst_brkm(TCONF, cleanup,
"fallocate system call is not implemented");
}
tst_resm(TFAIL | TTERRNO,
"fallocate(%d, %d, %" PRId64 ", %" PRId64 ") failed",
fd, mode, offset, len);
return;
} else {
tst_resm(TPASS,
"fallocate(%d, %d, %" PRId64 ", %" PRId64
") returned %ld", fd, mode, offset, len,
TEST_RETURN);
}
if (fstat(fd, &file_stat) < 0)
tst_resm(TFAIL | TERRNO, "fstat failed after fallocate()");
if (file_stat.st_size != expected_size)
tst_resm(TFAIL | TTERRNO,
"fstat test fails on fallocate (%d, %d, %" PRId64 ", %"
PRId64 ") Failed on mode", fd, mode, offset, len);
write_offset = random() % len;
lseek_offset = lseek(fd, write_offset, SEEK_CUR);
if (lseek_offset != offset + write_offset) {
tst_resm(TFAIL | TTERRNO,
"lseek fails in fallocate(%d, %d, %" PRId64 ", %"
PRId64 ") failed on mode", fd, mode, offset, len);
return;
}
//Write a character to file at random location
TEST(write(fd, "A", 1));
/* check return code */
if (TEST_RETURN == -1) {
tst_resm(TFAIL | TTERRNO,
"write fails in fallocate(%d, %d, %" PRId64 ", %"
PRId64 ") failed", fd, mode, offset, len);
} else {
tst_resm(TPASS,
"write operation on fallocated(%d, %d, %"
PRId64 ", %" PRId64 ") returned %ld", fd, mode,
offset, len, TEST_RETURN);
}
}