Author: jh
Date: Fri Jan 22 08:45:12 2010
New Revision: 202783
URL: http://svn.freebsd.org/changeset/base/202783
Log:
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.
Reported by: Fernando Apesteguía
Suggested by: jilles
Reviewed by: des
Approved by: trasz (mentor)
Modified:
head/sys/fs/pseudofs/pseudofs_vnops.c
Modified: head/sys/fs/pseudofs/pseudofs_vnops.c
==============================================================================
--- head/sys/fs/pseudofs/pseudofs_vnops.c Fri Jan 22 07:53:41 2010
(r202782)
+++ head/sys/fs/pseudofs/pseudofs_vnops.c Fri Jan 22 08:45:12 2010
(r202783)
@@ -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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