Author: ian
Date: Tue Mar 17 20:56:24 2015
New Revision: 280192
URL: https://svnweb.freebsd.org/changeset/base/280192
Log:
In sbuf_new_for_sysctl(), default the buffer size to 64 bytes if the
passed-in pointer is NULL and the length is zero.
Modified:
head/sys/kern/kern_sysctl.c
Modified: head/sys/kern/kern_sysctl.c
==============================================================================
--- head/sys/kern/kern_sysctl.c Tue Mar 17 20:15:49 2015 (r280191)
+++ head/sys/kern/kern_sysctl.c Tue Mar 17 20:56:24 2015 (r280192)
@@ -1807,6 +1807,9 @@ sbuf_new_for_sysctl(struct sbuf *s, char
struct sysctl_req *req)
{
+ /* Supply a default buffer size if none given. */
+ if (buf == NULL && length == 0)
+ length = 64;
s = sbuf_new(s, buf, length, SBUF_FIXEDLEN | SBUF_INCLUDENUL);
sbuf_set_drain(s, sbuf_sysctl_drain, req);
return (s);
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