0ab862abfa
This file is included by both libc and hostcompat. 2) Changed printf -> tprintf in all testbin programs
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
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* The President and Fellows of Harvard College.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* f_write.c
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*
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* This used to be a separate binary, because it came from Nachos
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* and nachos didn't support fork(). However, in OS/161 there's
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* no reason to make it a separate binary; doing so just makes
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* the test flaky.
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*
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*
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* It will start writing into a file, concurrently with
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* one or more instances of f_read.
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*
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*/
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#define SectorSize 512
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#define TMULT 50
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#define FSIZE ((SectorSize + 1) * TMULT)
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#define FNAME "f-testfile"
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#define READCHAR 'r'
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#define WRITECHAR 'w'
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#include <unistd.h>
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#include <stdio.h>
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#include <err.h>
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#include "f_hdr.h"
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static char buffer[SectorSize + 1];
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void
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subproc_write(void)
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{
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int fd;
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int i;
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for (i=0; i < SectorSize + 1; i++) {
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buffer[i] = WRITECHAR;
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}
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tprintf("File Writer starting ...\n");
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fd = open(FNAME, O_WRONLY);
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if (fd < 0) {
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err(1, "%s: open", FNAME);
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}
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for (i=0; i<TMULT; i++) {
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// yield();
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write(fd, buffer, SectorSize + 1);
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}
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close(fd);
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tprintf("File Write exited successfully!\n");
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}
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