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Restrict the length of return value within buflen.

This commit is contained in:
tsubai 1998-11-15 19:53:25 +00:00
parent 7c939afccf
commit dd918881b6
1 changed files with 7 additions and 1 deletions
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8
sys/arch/powerpc/powerpc/openfirm.c
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@ -1,4 +1,4 @@
/* $NetBSD: openfirm.c,v 1.2 1998/02/02 21:02:30 thorpej Exp $ */
/* $NetBSD: openfirm.c,v 1.3 1998/11/15 19:53:25 tsubai Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
@ -191,6 +191,8 @@ OF_getprop(handle, prop, buf, buflen)
args.buflen = buflen;
if (openfirmware(&args) == -1)
return -1;
if (args.size > buflen)
args.size = buflen;
if (args.size > 0)
ofbcopy(OF_buf, buf, args.size);
return args.size;
@ -246,6 +248,8 @@ OF_instance_to_path(ihandle, buf, buflen)
args.buflen = buflen;
if (openfirmware(&args) < 0)
return -1;
if (args.length > buflen)
args.length = buflen;
if (args.length > 0)
ofbcopy(OF_buf, buf, args.length);
return args.length;
@ -279,6 +283,8 @@ OF_package_to_path(phandle, buf, buflen)
args.buflen = buflen;
if (openfirmware(&args) < 0)
return -1;
if (args.length > buflen)
args.length = buflen;
if (args.length > 0)
ofbcopy(OF_buf, buf, args.length);
return args.length;