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Don't provide a (meaningless) cmsg when proving a notification

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in a recvmsg() call.

MFC after:	1 week
This commit is contained in:
Michael Tuexen 2018-01-15 21:59:20 +00:00
parent bab65a8418
commit 46bf534caf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=328028
1 changed files with 15 additions and 5 deletions
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20
sys/netinet/sctputil.c
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@ -47,7 +47,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/sctp_output.h>
#include <netinet/sctp_uio.h>
#include <netinet/sctp_timer.h>
#include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
#include <netinet/sctp_indata.h>
#include <netinet/sctp_auth.h>
#include <netinet/sctp_asconf.h>
#include <netinet/sctp_bsd_addr.h>
@ -6094,7 +6094,7 @@ sctp_m_free(struct mbuf *m)
return (m_free(m));
}
void
void
sctp_m_freem(struct mbuf *mb)
{
while (mb != NULL)
@ -6164,6 +6164,7 @@ sctp_soreceive(struct socket *so,
struct sockaddr *from;
struct sctp_extrcvinfo sinfo;
int filling_sinfo = 1;
int flags;
struct sctp_inpcb *inp;
inp = (struct sctp_inpcb *)so->so_pcb;
@ -6191,15 +6192,24 @@ sctp_soreceive(struct socket *so,
if (filling_sinfo) {
memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
}
error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
if (flagsp != NULL) {
flags = *flagsp;
} else {
flags = 0;
}
error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
(struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
if (flagsp != NULL) {
*flagsp = flags;
}
if (controlp != NULL) {
/* copy back the sinfo in a CMSG format */
if (filling_sinfo)
if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
*controlp = sctp_build_ctl_nchunk(inp,
(struct sctp_sndrcvinfo *)&sinfo);
else
} else {
*controlp = NULL;
}
}
if (psa) {
/* copy back the address info */