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Code Issues Releases Activity

setsockopt() transports user option data in an mbuf. if the user

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data is greater than MLEN, setsockopt is unable to pass it onto
the protocol handler.  Allocate a cluster in such case.

PR:		2575
Reviewed by:	 phk
Submitted by:	Julian Assange proff@iq.org
This commit is contained in:
Poul-Henning Kamp 1998-04-11 20:31:46 +00:00
parent 17d925335f
commit aba558930b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=35140
1 changed files with 7 additions and 2 deletions
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9
sys/kern/uipc_syscalls.c
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)uipc_syscalls.c 8.4 (Berkeley) 2/21/94
* $Id: uipc_syscalls.c,v 1.36 1998/02/09 06:09:27 eivind Exp $
* $Id: uipc_syscalls.c,v 1.37 1998/03/28 10:33:08 bde Exp $
*/
#include "opt_compat.h"
@ -985,12 +985,17 @@ setsockopt(p, uap)
error = getsock(p->p_fd, uap->s, &fp);
if (error)
return (error);
if (uap->valsize > MLEN)
if (uap->valsize > MCLBYTES)
return (EINVAL);
if (uap->val) {
m = m_get(M_WAIT, MT_SOOPTS);
if (m == NULL)
return (ENOBUFS);
if (uap->valsize > MLEN) {
MCLGET(m, M_WAIT);
if(!(m->m_flags & M_EXT))
return (ENOBUFS);
}
error = copyin(uap->val, mtod(m, caddr_t), (u_int)uap->valsize);
if (error) {
(void) m_free(m);