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Use cast where appropriate to avoid integer overflow.

This commit is contained in:
enami 2001-01-04 06:07:18 +00:00
parent d403e873db
commit f306f72978
1 changed files with 8 additions and 6 deletions
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14
sys/uvm/uvm_swap.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_swap.c,v 1.43 2000/12/27 09:17:04 chs Exp $ */
/* $NetBSD: uvm_swap.c,v 1.44 2001/01/04 06:07:18 enami Exp $ */
/*
* Copyright (c) 1995, 1996, 1997 Matthew R. Green
@ -537,7 +537,8 @@ sys_swapctl(p, v, retval)
* with NetBSD 1.3.
*/
sdp->swd_ose.ose_inuse =
btodb(sdp->swd_npginuse << PAGE_SHIFT);
btodb((u_int64_t)sdp->swd_npginuse <<
PAGE_SHIFT);
error = copyout(&sdp->swd_ose, sep,
sizeof(struct oswapent));
@ -1115,7 +1116,7 @@ swstrategy(bp)
*/
pageno -= sdp->swd_drumoffset; /* page # on swapdev */
bn = btodb(pageno << PAGE_SHIFT); /* convert to diskblock */
bn = btodb((u_int64_t)pageno << PAGE_SHIFT); /* convert to diskblock */
UVMHIST_LOG(pdhist, " %s: mapoff=%x bn=%x bcount=%ld",
((bp->b_flags & B_READ) == 0) ? "write" : "read",
@ -1188,8 +1189,9 @@ sw_reg_strategy(sdp, bp, bn)
{
struct vnode *vp;
struct vndxfer *vnx;
daddr_t nbn, byteoff;
daddr_t nbn;
caddr_t addr;
off_t byteoff;
int s, off, nra, error, sz, resid;
UVMHIST_FUNC("sw_reg_strategy"); UVMHIST_CALLED(pdhist);
@ -1211,7 +1213,7 @@ sw_reg_strategy(sdp, bp, bn)
error = 0;
bp->b_resid = bp->b_bcount; /* nothing transfered yet! */
addr = bp->b_data; /* current position in buffer */
byteoff = dbtob(bn);
byteoff = dbtob((u_int64_t)bn);
for (resid = bp->b_resid; resid; resid -= sz) {
struct vndbuf *nbp;
@ -1696,7 +1698,7 @@ uvm_swap_io(pps, startslot, npages, flags)
/*
* convert starting drum slot to block number
*/
startblk = btodb(startslot << PAGE_SHIFT);
startblk = btodb((u_int64_t)startslot << PAGE_SHIFT);
/*
* first, map the pages into the kernel (XXX: currently required