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2008-07-21 Roland McGrath <roland@frob.com>

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* hurd/fd-read.c (_hurd_fd_read): Return EGRATUITOUS if the server
	returned too much data out of line.
This commit is contained in:
Roland McGrath 2008-07-21 19:50:36 +00:00
parent 2e79213a36
commit 2e806440f9
1 changed files with 3 additions and 1 deletions
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4
hurd/fd-read.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1993,94,95,97,99,2002 Free Software Foundation, Inc.
/* Copyright (C) 1993,94,95,97,99,2002,2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -41,6 +41,8 @@ _hurd_fd_read (struct hurd_fd *fd, void *buf, size_t *nbytes, loff_t offset)
if (data != buf)
{
if (nread > *nbytes) /* Sanity check for bogus server. */
return EGRATUITOUS;
memcpy (buf, data, nread);
__vm_deallocate (__mach_task_self (), (vm_address_t) data, nread);
}