Author: jh
Date: Sat Jul 24 18:54:57 2010
New Revision: 210453
URL: http://svn.freebsd.org/changeset/base/210453
Log:
MFC r202783:
Truncate read request rather than returning EIO if the request is
larger than MAXPHYS + 1. This fixes a problem with cat(1) when it
uses a large I/O buffer.
Modified:
stable/8/sys/fs/pseudofs/pseudofs_vnops.c
Directory Properties:
stable/8/sys/ (props changed)
stable/8/sys/amd64/include/xen/ (props changed)
stable/8/sys/cddl/contrib/opensolaris/ (props changed)
stable/8/sys/contrib/dev/acpica/ (props changed)
stable/8/sys/contrib/pf/ (props changed)
stable/8/sys/dev/xen/xenpci/ (props changed)
Modified: stable/8/sys/fs/pseudofs/pseudofs_vnops.c
==============================================================================
--- stable/8/sys/fs/pseudofs/pseudofs_vnops.c Sat Jul 24 18:53:46 2010
(r210452)
+++ stable/8/sys/fs/pseudofs/pseudofs_vnops.c Sat Jul 24 18:54:57 2010
(r210453)
@@ -637,10 +637,8 @@ pfs_read(struct vop_read_args *va)
error = EINVAL;
goto ret;
}
- if (buflen > MAXPHYS + 1) {
- error = EIO;
- goto ret;
- }
+ if (buflen > MAXPHYS + 1)
+ buflen = MAXPHYS + 1;
sb = sbuf_new(sb, NULL, buflen, 0);
if (sb == NULL) {
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