xv6/userfs.c

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