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#include <u.h>
#include <libc.h>
#include <diskfs.h>
void
usage(void)
{
fprint(2, "usage: fscat fspartition\n");
exits("usage");
}
int
main(int argc, char **argv)
{
extern int nfilereads;
u8int *zero;
u32int i;
u32int n;
Block *b;
Disk *disk;
Fsys *fsys;
ARGBEGIN{
default:
usage();
}ARGEND
if(argc != 1)
usage();
if((disk = diskopenfile(argv[0])) == nil)
sysfatal("diskopen: %r");
if((disk = diskcache(disk, 16384, 16)) == nil)
sysfatal("diskcache: %r");
if((fsys = fsysopen(disk)) == nil)
sysfatal("fsysopen: %r");
zero = emalloc(fsys->blocksize);
fprint(2, "%d blocks total\n", fsys->nblock);
n = 0;
for(i=0; i<fsys->nblock; i++){
if((b = fsysreadblock(fsys, i)) != nil){
write(1, b->data, fsys->blocksize);
n++;
blockput(b);
}else
write(1, zero, fsys->blocksize);
if(b == nil && i < 2)
sysfatal("block %d not in use", i);
}
fprint(2, "%d blocks in use, %d file reads\n", n, nfilereads);
exits(nil);
return 0;
}
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