xv6-cs450/userfs.c
kaashoek 6fa5ffb56f devsw
checkpoint: write(fd,"hello\n",6) where fd is a console dev almost works
2006-08-09 16:04:04 +00:00

53 lines
961 B
C

#include "user.h"
#include "types.h"
#include "fs.h"
// file system tests
char buf[1024];
char *echo_args[] = { "echo", "hello", "goodbye", 0 };
char *cat_args[] = { "cat", "README", 0 };
int
main(void)
{
int fd;
puts("userfs running\n");
block();
if (mknod ("console", T_DEV, 1, 1) < 0)
puts ("mknod failed\n");
else
puts ("made a node\n");
fd = open("console", 1);
if(fd >= 0){
puts("open console ok\n");
close(fd);
} else {
puts("open console failed!\n");
}
if (write (fd, "hello\n", 6) != 6) {
puts ("write to console failed\n");
}
close (fd);
fd = open("echo", 0);
if(fd >= 0){
puts("open echo ok\n");
close(fd);
} else {
puts("open echo failed!\n");
}
fd = open("doesnotexist", 0);
if(fd >= 0){
puts("open doesnotexist succeeded!\n");
close(fd);
} else {
puts("open doesnotexist failed\n");
}
//exec("echo", echo_args);
exec("cat", cat_args);
return 0;
}