XXXX adding PID information to netstat output

@@ -29,10 +29,11 @@
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/buf.h>
 #include <sys/vfs.h>
 #include <sys/vnode.h>
+#include <sys/fcntl.h>
 #include <sys/debug.h>
 #include <sys/errno.h>
 #include <sys/stropts.h>
 #include <sys/cmn_err.h>
 #include <sys/sysmacros.h>

@@ -105,10 +106,11 @@
 static ssize_t sctp_assoc_recv(sock_upper_handle_t, mblk_t *, size_t, int,
     int *, boolean_t *);
 static void sctp_assoc_xmitted(sock_upper_handle_t, boolean_t);
 static void sctp_assoc_properties(sock_upper_handle_t,
     struct sock_proto_props *);
+static mblk_t *sctp_get_sock_pid_mblk(sock_upper_handle_t);
 
 sonodeops_t sosctp_sonodeops = {
         sosctp_init,                    /* sop_init     */
         sosctp_accept,                  /* sop_accept   */
         sosctp_bind,                    /* sop_bind     */

@@ -167,10 +169,13 @@
         sctp_assoc_recv,
         sctp_assoc_properties,
         sctp_assoc_xmitted,
         NULL,                   /* su_recv_space */
         NULL,                   /* su_signal_oob */
+        NULL,                   /* su_set_error */
+        NULL,                   /* su_closed */
+        sctp_get_sock_pid_mblk
 };
 
 /* ARGSUSED */
 static int
 sosctp_init(struct sonode *so, struct sonode *pso, struct cred *cr, int flags)

@@ -1771,10 +1776,17 @@
                  */
                 nfp->f_vnode = nvp;
                 mutex_exit(&nfp->f_tlock);
                 setf(nfd, nfp);
 
+                /* Add pid to the list associated with that socket. */
+                if (nfp->f_vnode != NULL) {
+                        (void) VOP_IOCTL(nfp->f_vnode, F_ASSOCI_PID,
+                            (intptr_t)curproc->p_pidp->pid_id, FKIOCTL, kcred,
+                            NULL, NULL);
+                }
+
                 mutex_enter(&so->so_lock);
 
                 sosctp_assoc_move(ss, SOTOSSO(nso), ssa);
 
                 mutex_exit(&nso->so_lock);

@@ -2228,5 +2240,19 @@
                         }
                 }
         }
         mutex_exit(&so->so_lock);
 }
+
+static mblk_t *
+sctp_get_sock_pid_mblk(sock_upper_handle_t handle)
+{
+        struct sctp_soassoc *ssa = (struct sctp_soassoc *)handle;
+        struct sonode *so;
+
+        if (ssa->ssa_type == SOSCTP_ASSOC)
+                so = &ssa->ssa_sonode->ss_so;
+        else
+                so = &((struct sctp_sonode *)handle)->ss_so;
+
+        return (so_get_sock_pid_mblk((sock_upper_handle_t)so));
+}