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In sbuf_new_for_sysctl(), default the buffer size to 64 bytes if the

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passed-in pointer is NULL and the length is zero.
This commit is contained in:
ian 2015-03-17 20:56:24 +00:00
parent 6e6661e13c
commit f8efd87631
1 changed files with 3 additions and 0 deletions
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3
sys/kern/kern_sysctl.c
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@ -1807,6 +1807,9 @@ sbuf_new_for_sysctl(struct sbuf *s, char *buf, int length,
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);