diff options
| -rw-r--r-- | sys/ufs/ffs/ffs_vnops.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/ufs/ffs/ffs_vnops.c b/sys/ufs/ffs/ffs_vnops.c index c90f450..848ac9d 100644 --- a/sys/ufs/ffs/ffs_vnops.c +++ b/sys/ufs/ffs/ffs_vnops.c @@ -975,14 +975,18 @@ ffs_extread(struct vnode *vp, struct uio *uio, int ioflag) #endif orig_resid = uio->uio_resid; - if (orig_resid <= 0) + if (orig_resid == 0) return (0); + /* + * The caller is supposed to check if + * uio->uio_offset >= 0 and uio->uio_resid >= 0. + */ bytesinfile = dp->di_extsize - uio->uio_offset; if (bytesinfile <= 0) { if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) ip->i_flag |= IN_ACCESS; - return 0; + return (0); } for (error = 0, bp = NULL; uio->uio_resid > 0; bp = NULL) { |
