Pintos: pintos/src/tests/filesys/base/syn-write.c Source File

00001 /* Spawns several child processes to write out different parts of
00002    the contents of a file and waits for them to finish.  Then
00003    reads back the file and verifies its contents. */
00004 
00005 #include <random.h>
00006 #include <stdio.h>
00007 #include <string.h>
00008 #include <syscall.h>
00009 #include "tests/filesys/base/syn-write.h"
00010 #include "tests/lib.h"
00011 #include "tests/main.h"
00012 
00013 char buf1[BUF_SIZE];
00014 char buf2[BUF_SIZE];
00015 
00016 void
00017 test_main (void) 
00018 {
00019   pid_t children[CHILD_CNT];
00020   int fd;
00021 
00022   CHECK (create (file_name, sizeof buf1), "create \"%s\"", file_name);
00023 
00024   exec_children ("child-syn-wrt", children, CHILD_CNT);
00025   wait_children (children, CHILD_CNT);
00026 
00027   CHECK ((fd = open (file_name)) > 1, "open \"%s\"", file_name);
00028   CHECK (read (fd, buf1, sizeof buf1) > 0, "read \"%s\"", file_name);
00029   random_bytes (buf2, sizeof buf2);
00030   compare_bytes (buf1, buf2, sizeof buf1, 0, file_name);
00031 }