diff options
Diffstat (limited to 'sys/kern/uipc_socket2.c')
| -rw-r--r-- | sys/kern/uipc_socket2.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/sys/kern/uipc_socket2.c b/sys/kern/uipc_socket2.c index 954831245570..024ce995ab40 100644 --- a/sys/kern/uipc_socket2.c +++ b/sys/kern/uipc_socket2.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)uipc_socket2.c 8.1 (Berkeley) 6/10/93 - * $Id: uipc_socket2.c,v 1.15 1996/10/07 04:32:27 pst Exp $ + * $Id: uipc_socket2.c,v 1.16 1996/10/11 19:26:35 pst Exp $ */ #include <sys/param.h> @@ -800,6 +800,32 @@ sbdroprecord(sb) } } +/* + * Create a "control" mbuf containing the specified data + * with the specified type for presentation on a socket buffer. + */ +struct mbuf * +sbcreatecontrol(p, size, type, level) + caddr_t p; + register int size; + int type, level; +{ + register struct cmsghdr *cp; + struct mbuf *m; + + if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL) + return ((struct mbuf *) NULL); + cp = mtod(m, struct cmsghdr *); + /* XXX check size? */ + (void)memcpy(CMSG_DATA(cp), p, size); + size += sizeof(*cp); + m->m_len = size; + cp->cmsg_len = size; + cp->cmsg_level = level; + cp->cmsg_type = type; + return (m); +} + #ifdef PRU_OLDSTYLE /* * The following routines mediate between the old-style `pr_usrreq' |