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#include "stdinc.h"
#include "dat.h"
#include "fns.h"
void
zeropart(Part *part, int blocksize)
{
ZBlock *b;
u64int addr;
int w;
fprint(2, "clearing %s\n", part->name);
b = alloczblock(MaxIoSize, 1, blocksize);
w = 0;
for(addr = PartBlank; addr + MaxIoSize <= part->size; addr += MaxIoSize){
if(writepart(part, addr, b->data, MaxIoSize) < 0)
sysfatal("can't initialize %s, writing block %d failed: %r", part->name, w);
w++;
}
for(; addr + blocksize <= part->size; addr += blocksize)
if(writepart(part, addr, b->data, blocksize) < 0)
sysfatal("can't initialize %s: %r", part->name);
if(flushpart(part) < 0)
sysfatal("can't flush writes to %s: %r", part->name);
freezblock(b);
}
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