XXXX adding PID information to netstat output

@@ -76,10 +76,11 @@
 #include <sys/autoconf.h>
 #include <sys/policy.h>
 #include <sys/dld.h>
 #include <sys/zone.h>
 #include <c2/audit.h>
+#include <sys/fcntl.h>
 
 /*
  * This define helps improve the readability of streams code while
  * still maintaining a very old streams performance enhancement.  The
  * performance enhancement basically involved having all callers

@@ -141,10 +142,11 @@
 
 static void putback(struct stdata *, queue_t *, mblk_t *, int);
 static void strcleanall(struct vnode *);
 static int strwsrv(queue_t *);
 static int strdocmd(struct stdata *, struct strcmd *, cred_t *);
+static boolean_t is_xti_str(const struct stdata *);
 
 /*
  * qinit and module_info structures for stream head read and write queues
  */
 struct module_info strm_info = { 0, "strrhead", 0, INFPSZ, STRHIGH, STRLOW };

@@ -395,10 +397,18 @@
         stp->sd_maxblk = INFPSZ;
         qp->q_ptr = _WR(qp)->q_ptr = stp;
         STREAM(qp) = STREAM(_WR(qp)) = stp;
         vp->v_stream = stp;
         mutex_exit(&vp->v_lock);
+
+        /*
+         * If this is not a system process, then add it to
+         * the list associated with the stream head.
+         */
+        if (!(curproc->p_flag & SSYS) && is_xti_str(stp))
+                sh_insert_pid(stp, curproc->p_pidp->pid_id);
+
         if (vp->v_type == VFIFO) {
                 stp->sd_flag |= OLDNDELAY;
                 /*
                  * This means, both for pipes and fifos
                  * strwrite will send SIGPIPE if the other

@@ -5681,10 +5691,26 @@
         }
 
         case FIONBIO:
         case FIOASYNC:
                 return (0);     /* handled by the upper layer */
+        case F_ASSOCI_PID:
+        {
+                if (crp != kcred)
+                        return (EPERM);
+                if (is_xti_str(stp))
+                        sh_insert_pid(stp, (pid_t)arg);
+                return (0);
+        }
+        case F_DASSOC_PID:
+        {
+                if (crp != kcred)
+                        return (EPERM);
+                if (is_xti_str(stp))
+                        sh_remove_pid(stp, (pid_t)arg);
+                return (0);
+        }
         }
 }
 
 /*
  * Custom free routine used for M_PASSFP messages.

@@ -8633,5 +8659,35 @@
                         if (bp->b_wptr > bp->b_rptr)
                                 return (B_TRUE);
                 }
         return (B_FALSE);
 }
+
+/*
+ * Check whether a stream is an XTI stream or not.
+ */
+static boolean_t
+is_xti_str(const struct stdata *stp)
+{
+        struct devnames *dnp;
+        vnode_t *vn;
+        major_t major;
+        if ((vn = stp->sd_vnode) != NULL && vn->v_type == VCHR &&
+            vn->v_rdev != 0) {
+                major = getmajor(vn->v_rdev);
+                dnp = (major != DDI_MAJOR_T_NONE && major >= 0 &&
+                    major < devcnt) ? &devnamesp[major] : NULL;
+                if (dnp != NULL && dnp->dn_name != NULL &&
+                    (strcmp(dnp->dn_name, "ip") == 0 ||
+                    strcmp(dnp->dn_name, "tcp") == 0 ||
+                    strcmp(dnp->dn_name, "udp") == 0 ||
+                    strcmp(dnp->dn_name, "icmp") == 0 ||
+                    strcmp(dnp->dn_name, "tl") == 0 ||
+                    strcmp(dnp->dn_name, "ip6") == 0 ||
+                    strcmp(dnp->dn_name, "tcp6") == 0 ||
+                    strcmp(dnp->dn_name, "udp6") == 0 ||
+                    strcmp(dnp->dn_name, "icmp6") == 0)) {
+                        return (B_TRUE);
+                }
+        }
+        return (B_FALSE);
+}