1 #include <u.h>
2 #include <libc.h>
3 #include <diskfs.h>
4 
5 void
6 usage(void)
7 {
8 	fprint(2, "usage: fscat fspartition\n");
9 	exits("usage");
10 }
11 
12 int
13 main(int argc, char **argv)
14 {
15 	extern int nfilereads;
16 	u8int *zero;
17 	u32int i;
18 	u32int n;
19 	Block *b;
20 	Disk *disk;
21 	Fsys *fsys;
22 
23 	ARGBEGIN{
24 	default:
25 		usage();
26 	}ARGEND
27 
28 	if(argc != 1)
29 		usage();
30 
31 	if((disk = diskopenfile(argv[0])) == nil)
32 		sysfatal("diskopen: %r");
33 	if((disk = diskcache(disk, 16384, 16)) == nil)
34 		sysfatal("diskcache: %r");
35 	if((fsys = fsysopen(disk)) == nil)
36 		sysfatal("ffsopen: %r");
37 
38 	zero = emalloc(fsys->blocksize);
39 	fprint(2, "%d blocks total\n", fsys->nblock);
40 	n = 0;
41 	for(i=0; i<fsys->nblock; i++){
42 		if((b = fsysreadblock(fsys, i)) != nil){
43 			write(1, b->data, fsys->blocksize);
44 			n++;
45 			blockput(b);
46 		}else
47 			write(1, zero, fsys->blocksize);
48 		if(b == nil && i < 2)
49 			sysfatal("block %d not in use", i);
50 	}
51 	fprint(2, "%d blocks in use, %d file reads\n", n, nfilereads);
52 	exits(nil);
53 	return 0;
54 }