2cb47cb4c8
crash_prog was introduced to force-crash a userspace program since _exit may not yet be implemented. However, the new versions of OS161 already have the exact same logic as crash_prog in stdlib/exit.
105 lines
3.2 KiB
C
105 lines
3.2 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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* readwritetest.c
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*
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* Tests whether read and write syscalls works
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* This should run correctly when open, write and read are
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* implemented correctly.
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*
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* NOTE: While checking, this test only checks the first 31 characters.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#include <test161/test161.h>
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#define FILENAME "readwritetest.dat"
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static const char *MAGIC = "h4xa0rRq0Vgbc96tiYJ^!#nXzZSAKPO";
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int
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main(int argc, char **argv)
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{
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// 23 Mar 2012 : GWA : Assume argument passing is *not* supported.
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(void) argc;
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(void) argv;
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int fd, len;
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int expected_len = strlen(MAGIC);
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fd = open(FILENAME, O_WRONLY | O_CREAT | O_TRUNC);
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if(fd < 0) {
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err(1, "Failed to open file.\n");
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}
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nprintf(".");
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len = write(fd, MAGIC, expected_len);
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if(len != expected_len) {
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err(1, "writetest expected to write %d bytes to readwritetest.dat."
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" Syscall reports that it wrote %d bytes.\n"
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"Is your write syscall returning the right value?\n",
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expected_len, len);
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}
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// Now, we test
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// close() may not be implemented.
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// So just try to open the file again.
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fd = open(FILENAME, O_RDONLY);
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if(fd < 0) {
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err(1, "Failed to open file.\n");
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}
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nprintf(".");
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char buf[32];
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len = read(fd, buf, expected_len);
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if(len != 31) {
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err(1, "readtest expected to read %d bytes from readtest.dat."
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" Only read %d bytes.\n",
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expected_len, len);
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}
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nprintf(".");
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if(strcmp(MAGIC, buf) != 0) {
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err(1, "Did not match MAGIC string.\n"
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"MAGIC: %s\n"
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"GOT : %s\n", MAGIC, buf);
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}
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nprintf(".");
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nprintf("\n");
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secprintf(SECRET, MAGIC, "/testbin/readwritetest");
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return 0;
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}
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