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