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Fix for a (blocks) underrun bug where negative values were being

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returned back to df from a statfs call. Causing df to print negative
values.

Submitted by:	Mohan Srinivasan mohans at yahoo-inc dot com
Reviewed by:	rwatson
This commit is contained in:
Paul Saab 2004-12-01 06:42:21 +00:00
parent bcc5241c43
commit 813d33a869
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=138254
1 changed files with 4 additions and 3 deletions
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7
sys/nfsclient/nfs_vfsops.c
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@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/vnode.h>
#include <sys/signalvar.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
@ -270,17 +271,17 @@ nfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
for (bsize = NFS_FABLKSIZE; ; bsize *= 2) {
sbp->f_bsize = bsize;
tquad = fxdr_hyper(&sfp->sf_tbytes);
if (((long)(tquad / bsize) > LONG_MAX) ||
if (((unsigned long)(tquad / bsize) > LONG_MAX) ||
((long)(tquad / bsize) < LONG_MIN))
continue;
sbp->f_blocks = tquad / bsize;
tquad = fxdr_hyper(&sfp->sf_fbytes);
if (((long)(tquad / bsize) > LONG_MAX) ||
if (((unsigned long)(tquad / bsize) > LONG_MAX) ||
((long)(tquad / bsize) < LONG_MIN))
continue;
sbp->f_bfree = tquad / bsize;
tquad = fxdr_hyper(&sfp->sf_abytes);
if (((long)(tquad / bsize) > LONG_MAX) ||
if (((unsigned long)(tquad / bsize) > LONG_MAX) ||
((long)(tquad / bsize) < LONG_MIN))
continue;
sbp->f_bavail = tquad / bsize;