newlib-cygwin/winsup/testsuite/winsup.api/ltp/asyncio02.c

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/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
/* $Id$ */
/************************************************************
* OS Test - Silicon Graphics, Inc.
* Mendota Heights, Minnesota
*
* TEST IDENTIFIER: aiotcs02: write/close flushes data to the file
*
* PARENT DOCUMENT: aiotds01: kernel i/o
*
* AUTHOR: Barrie Kletscher
*
* CO-PILOT: Dave Baumgartner
*
* TEST ITEMS:
* for each open flags set used:
* 1. Multiple writes to a file work as specified for
* more than BUFSIZ bytes.
* 2. Multiple writes to a file work as specified for
* BUFSIZ bytes.
* 3. Multiple writes to a file work as specified for
* lower than BUFSIZ bytes.
*
* INPUT SPECIFICATIONS:
* Standard parse_opts supported options.
*
* OUTPUT SPECIFICATIONS
* Standard tst_res output format
*
* ENVIRONMENTAL NEEDS:
* This program uses the environment variable TMPDIR for the location
* of the temporary directory.
*
*
* SPECIAL PROCEDURAL REQUIREMENTS:
* The program must be linked with tst_*.o and parse_opts.o.
*
* INTERCASE DEPENDENCIES:
* NONE.
*
* DETAILED DESCRIPTION:
* Attempt to get some memory to work with.
* Call testrun writing (BUFSIZ + 1) bytes
* Call testrun writing BUFSIZ bytes
* Repeated call to testrun() with decreasing write sizes
* less than BUFSIZ
* End
*
* Start testrun()
* Attempt to open a temporary file.
* Write the memory to the file.
* Attempt to close the file which also flushes the buffers.
* Now check to see if the number of bytes written is the
* same as the number of bytes in the file.
* Cleanup
*
* BUGS:
* NONE.
*
************************************************************/
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/signal.h>
#include <errno.h>
#include "test.h"
#include "usctest.h"
#define FLAG O_RDWR | O_CREAT | O_TRUNC /* Flags used when opening temp tile */
#define MODE 0777 /* Mode to open file with */
#define WRITES 10 /* Number of times buffer is written */
#define DECR 1000 /* Number of bytes decremented between */
/* Calls to testrun() */
#define OK -1 /* Return value from testrun() */
#define FNAME1 "aio02.1"
#define FNAME2 "aio02.2"
#define FNAME3 "aio02.3"
#define ERR_MSG1 "Bytes in file not equal to bytes written."
#define ERR_MSG2 "Bytes in file (%d) not equal to bytes written (%d)."
char *dp; /* pointer to area of memory */
void setup();
void cleanup(void) __attribute__((noreturn));
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int testrun(int flag, int bytes, int ti);
const char *TCID="asyncio02"; /* Test program identifier. */
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int TST_TOTAL=6; /* Total number of test cases. */
extern int Tst_count; /* Test Case counter for tst_* routines */
extern int Tst_nobuf; /* variable used to turn off tst_res buffering */
extern int errno;
int exp_enos[]={0}; /* Array of expected errnos */
char mesg[150];
const char *filename; /* name of the temporary file */
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char *Progname;
int Open_flags;
int Flags[] = {
O_RDWR | O_CREAT | O_TRUNC,
O_RDWR | O_CREAT | O_TRUNC
};
int Num_flags;
/***********************************************************************
* MAIN
***********************************************************************/
int
main(int ac, char **av)
{
int i; /* counter */
int ret_val; /* return value from testrun call */
int eok; /* everything is ok flag */
int lc; /* loop counter */
const char *msg; /* message returned from parse_opts */
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int flag_cnt;
Tst_nobuf=1;
Num_flags = sizeof(Flags)/sizeof(int);
TST_TOTAL= 3 * Num_flags;
/***************************************************************
* parse standard options, and exit if there is an error
***************************************************************/
if ( (msg=parse_opts(ac, av, (option_t *) NULL, NULL)) != (char *) NULL ) {
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
tst_exit();
}
/***************************************************************
* perform global setup for test
***************************************************************/
setup();
/***************************************************************
* check looping state if -c option given
***************************************************************/
for (lc=0; TEST_LOOPING(lc); lc++) {
/* reset Tst_count in case we are looping. */
Tst_count=0;
for (flag_cnt=0; flag_cnt<Num_flags; flag_cnt++) {
/*
* call testrun writing (BUFSIZ + 1) byte chunks
*/
filename=FNAME1;
if( testrun(Flags[flag_cnt],BUFSIZ+1,1) != OK)
tst_resm(TFAIL,ERR_MSG1);
else if ( STD_FUNCTIONAL_TEST ) {
tst_resm(TPASS,
"More than BUFSIZE bytes multiple synchronous writes to a file check out ok");
}
/*
* call testrun writing BUFSIZ byte chunks
*/
filename=FNAME2;
if(testrun(Flags[flag_cnt],BUFSIZ,2) != OK) {
tst_resm(TFAIL,ERR_MSG1);
}
else if ( STD_FUNCTIONAL_TEST ) {
tst_resm(TPASS,
"BUFSIZE bytes multiple synchronous writes to a file checks out ok");
}
/*
* while the byte chunks are greater than 0
* call testrun() with decreasing chunk sizes
*/
filename=FNAME3;
eok=1;
for(i = BUFSIZ-1; i >= 0; i -= DECR) {
if((ret_val = testrun(Flags[flag_cnt],i,3)) != OK) {
char output[80]; /* local output char string */
(void)sprintf(output,ERR_MSG2,ret_val,i*WRITES);
tst_resm(TFAIL,output);
}
}
if ( eok && STD_FUNCTIONAL_TEST )
tst_resm(TPASS,
"Less than BUFSIZE bytes multiple synchronous writes to a file checks out ok");
}
}
cleanup();
return 0;
} /* end main() */
/***********************************************************
*
* This function does the actual running of the tests.
*
***********************************************************/
int
testrun(int flag, int bytes, int ti)
{
void cleanup();
int fildes, /* temporary file's descriptor */
i; /* counter */
int ret;
struct stat buffer; /* buffer of memory required for stat command */
/*
* Attempt to open a temporary file.
*/
if((fildes = open(filename,flag,MODE)) == -1) {
sprintf(mesg, "open failed, errno:%d", errno);
tst_brkm(TBROK, cleanup, mesg);
}
/*
* Write the memory to the file.
*/
for(i = 0; i < WRITES; i++) {
TEST( write(fildes,dp,(unsigned)bytes) );
if( TEST_RETURN == -1) {
sprintf(mesg, "write failed, errno:%d", errno);
tst_brkm(TBROK, cleanup, mesg);
}
} /* end for() */
/*
* Attempt to close the file which also flushes the buffers.
*/
if(close(fildes) == -1) {
sprintf(mesg, "close failed, errno:%d", errno);
tst_brkm(TBROK, cleanup, mesg);
}
ret=OK;
if ( STD_FUNCTIONAL_TEST ) {
/*
* Now check to see if the number of bytes written is the
* same as the number of bytes in the file.
*/
if(stat(filename,&buffer) == -1) {
sprintf(mesg, "stat failed, errno:%d", errno);
tst_brkm(TBROK, cleanup, mesg);
}
if(buffer.st_size != (off_t)(bytes * WRITES)) {
ret=(int)buffer.st_size;
}
}
if ( unlink(filename) == -1 ) {
sprintf(mesg, "unlink failed, errno:%d", errno);
tst_brkm(TBROK, cleanup, mesg);
}
return ret;
} /* end testrun() */
/***************************************************************
* setup() - performs all ONE TIME setup for this test.
***************************************************************/
void
setup()
{
/* capture signals */
tst_sig(FORK, DEF_HANDLER, cleanup);
/* create a temporary directory and go to it */
tst_tmpdir();
/* Indicate which errnos are expected */
TEST_EXP_ENOS(exp_enos);
/* Pause if that option was specified */
TEST_PAUSE;
/*
* Attempt to get some memory to work with.
*/
if((dp = (char *)malloc((unsigned)BUFSIZ+1)) == NULL) {
sprintf(mesg, "malloc failed, errno:%d", errno);
tst_brkm(TBROK, cleanup, mesg);
}
} /* End setup() */
/***************************************************************
* cleanup() - performs all ONE TIME cleanup for this test at
* completion or premature exit.
***************************************************************/
void
cleanup()
{
/*
* print timing stats if that option was specified.
* print errno log if that option was specified.
*/
TEST_CLEANUP;
/* remove temporary directory and all files in it. */
tst_rmdir();
/* exit with return code appropriate for results */
tst_exit();
} /* End cleanup() */