add Berkeley header

[unix-history] / usr / src / sys / kern / uipc_socket.c

diff --git a/usr/src/sys/kern/uipc_socket.c b/usr/src/sys/kern/uipc_socket.c
index 9a8d447..33b6274 100644 (file)
--- a/usr/src/sys/kern/uipc_socket.c
+++ b/usr/src/sys/kern/uipc_socket.c
@@ -1,25 +1,27 @@
-/*     uipc_socket.c   6.6     84/08/21        */
-
-#include "../h/param.h"
-#include "../h/systm.h"
-#include "../h/dir.h"
-#include "../h/user.h"
-#include "../h/proc.h"
-#include "../h/file.h"
-#include "../h/inode.h"
-#include "../h/buf.h"
-#include "../h/mbuf.h"
-#include "../h/un.h"
-#include "../h/domain.h"
-#include "../h/protosw.h"
-#include "../h/socket.h"
-#include "../h/socketvar.h"
-#include "../h/stat.h"
-#include "../h/ioctl.h"
-#include "../h/uio.h"
-#include "../net/route.h"
-#include "../netinet/in.h"
-#include "../net/if.h"
+/*
+ * Copyright (c) 1982, 1986 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of California at Berkeley. The name of the University
+ * may not be used to endorse or promote products derived from this
+ * software without specific prior written permission. This software
+ * is provided ``as is'' without express or implied warranty.
+ *
+ *     @(#)uipc_socket.c       7.7 (Berkeley) %G%
+ */
+
+#include "param.h"
+#include "dir.h"
+#include "user.h"
+#include "proc.h"
+#include "file.h"
+#include "mbuf.h"
+#include "domain.h"
+#include "protosw.h"
+#include "socket.h"
+#include "socketvar.h"

 
 /*
  * Socket operation routines.
 
 /*
  * Socket operation routines.


@@ -29,10 +31,8 @@
  * switching out to the protocol specific routines.
  *
  * TODO:
  * switching out to the protocol specific routines.
  *
  * TODO:

- *     sostat

  *     test socketpair
  *     test socketpair

- *     PR_RIGHTS
- *     clean up select, async
+ *     clean up async

  *     out-of-band is a kludge
  */
 /*ARGSUSED*/
  *     out-of-band is a kludge
  */
 /*ARGSUSED*/


@@ -47,7 +47,7 @@ socreate(dom, aso, type, proto)
        register int error;
 
        if (proto)
        register int error;
 
        if (proto)

-               prp = pffindproto(dom, proto);
+               prp = pffindproto(dom, proto, type);

        else
                prp = pffindtype(dom, type);
        if (prp == 0)
        else
                prp = pffindtype(dom, type);
        if (prp == 0)


@@ -55,8 +55,6 @@ socreate(dom, aso, type, proto)
        if (prp->pr_type != type)
                return (EPROTOTYPE);
        m = m_getclr(M_WAIT, MT_SOCKET);
        if (prp->pr_type != type)
                return (EPROTOTYPE);
        m = m_getclr(M_WAIT, MT_SOCKET);

-       if (m == 0)
-               return (ENOBUFS);

        so = mtod(m, struct socket *);
        so->so_options = 0;
        so->so_state = 0;
        so = mtod(m, struct socket *);
        so->so_options = 0;
        so->so_state = 0;


@@ -66,7 +64,7 @@ socreate(dom, aso, type, proto)
        so->so_proto = prp;
        error =
            (*prp->pr_usrreq)(so, PRU_ATTACH,
        so->so_proto = prp;
        error =
            (*prp->pr_usrreq)(so, PRU_ATTACH,

-               (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0);
+               (struct mbuf *)0, (struct mbuf *)proto, (struct mbuf *)0);

        if (error) {
                so->so_state |= SS_NOFDREF;
                sofree(so);
        if (error) {
                so->so_state |= SS_NOFDREF;
                sofree(so);


@@ -119,13 +117,13 @@ sofree(so)
        register struct socket *so;
 {
 
        register struct socket *so;
 {
 

+       if (so->so_pcb || (so->so_state & SS_NOFDREF) == 0)
+               return;

        if (so->so_head) {
                if (!soqremque(so, 0) && !soqremque(so, 1))
                        panic("sofree dq");
                so->so_head = 0;
        }
        if (so->so_head) {
                if (!soqremque(so, 0) && !soqremque(so, 1))
                        panic("sofree dq");
                so->so_head = 0;
        }

-       if (so->so_pcb || (so->so_state & SS_NOFDREF) == 0)
-               return;

        sbrelease(&so->so_snd);
        sorflush(so);
        (void) m_free(dtom(so));
        sbrelease(&so->so_snd);
        sorflush(so);
        (void) m_free(dtom(so));


@@ -152,7 +150,7 @@ soclose(so)
                goto discard;
        if (so->so_state & SS_ISCONNECTED) {
                if ((so->so_state & SS_ISDISCONNECTING) == 0) {
                goto discard;
        if (so->so_state & SS_ISCONNECTED) {
                if ((so->so_state & SS_ISDISCONNECTING) == 0) {

-                       error = sodisconnect(so, (struct mbuf *)0);
+                       error = sodisconnect(so);

                        if (error)
                                goto drop;
                }
                        if (error)
                                goto drop;
                }


@@ -213,16 +211,25 @@ soconnect(so, nam)
        register struct socket *so;
        struct mbuf *nam;
 {
        register struct socket *so;
        struct mbuf *nam;
 {

-       int s = splnet();
+       int s;

        int error;
 
        int error;
 

-       if (so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) {
+       if (so->so_options & SO_ACCEPTCONN)
+               return (EOPNOTSUPP);
+       s = splnet();
+       /*
+        * If protocol is connection-based, can only connect once.
+        * Otherwise, if connected, try to disconnect first.
+        * This allows user to disconnect by connecting to, e.g.,
+        * a null address.
+        */
+       if (so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING) &&
+           ((so->so_proto->pr_flags & PR_CONNREQUIRED) ||
+           (error = sodisconnect(so))))

                error = EISCONN;
                error = EISCONN;

-               goto bad;
-       }
-       error = (*so->so_proto->pr_usrreq)(so, PRU_CONNECT,
-           (struct mbuf *)0, nam, (struct mbuf *)0);
-bad:
+       else
+               error = (*so->so_proto->pr_usrreq)(so, PRU_CONNECT,
+                   (struct mbuf *)0, nam, (struct mbuf *)0);

        splx(s);
        return (error);
 }
        splx(s);
        return (error);
 }


@@ -240,9 +247,8 @@ soconnect2(so1, so2)
        return (error);
 }
 
        return (error);
 }
 

-sodisconnect(so, nam)
+sodisconnect(so)

        register struct socket *so;
        register struct socket *so;

-       struct mbuf *nam;

 {
        int s = splnet();
        int error;
 {
        int s = splnet();
        int error;


@@ -256,7 +262,7 @@ sodisconnect(so, nam)
                goto bad;
        }
        error = (*so->so_proto->pr_usrreq)(so, PRU_DISCONNECT,
                goto bad;
        }
        error = (*so->so_proto->pr_usrreq)(so, PRU_DISCONNECT,

-           (struct mbuf *)0, nam, (struct mbuf *)0);
+           (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0);

 bad:
        splx(s);
        return (error);
 bad:
        splx(s);
        return (error);


@@ -281,7 +287,7 @@ sosend(so, nam, uio, flags, rights)
        struct mbuf *top = 0;
        register struct mbuf *m, **mp;
        register int space;
        struct mbuf *top = 0;
        register struct mbuf *m, **mp;
        register int space;

-       int len, error = 0, s, dontroute, first = 1;
+       int len, rlen = 0, error = 0, s, dontroute, first = 1;

 
        if (sosendallatonce(so) && uio->uio_resid > so->so_snd.sb_hiwat)
                return (EMSGSIZE);
 
        if (sosendallatonce(so) && uio->uio_resid > so->so_snd.sb_hiwat)
                return (EMSGSIZE);


@@ -289,16 +295,16 @@ sosend(so, nam, uio, flags, rights)
            (flags & MSG_DONTROUTE) && (so->so_options & SO_DONTROUTE) == 0 &&
            (so->so_proto->pr_flags & PR_ATOMIC);
        u.u_ru.ru_msgsnd++;
            (flags & MSG_DONTROUTE) && (so->so_options & SO_DONTROUTE) == 0 &&
            (so->so_proto->pr_flags & PR_ATOMIC);
        u.u_ru.ru_msgsnd++;

+       if (rights)
+               rlen = rights->m_len;

 #define        snderr(errno)   { error = errno; splx(s); goto release; }
 
 restart:
        sblock(&so->so_snd);
        do {
                s = splnet();
 #define        snderr(errno)   { error = errno; splx(s); goto release; }
 
 restart:
        sblock(&so->so_snd);
        do {
                s = splnet();

-               if (so->so_state & SS_CANTSENDMORE) {
-                       psignal(u.u_procp, SIGPIPE);
+               if (so->so_state & SS_CANTSENDMORE)

                        snderr(EPIPE);
                        snderr(EPIPE);

-               }

                if (so->so_error) {
                        error = so->so_error;
                        so->so_error = 0;                       /* ??? */
                if (so->so_error) {
                        error = so->so_error;
                        so->so_error = 0;                       /* ??? */


@@ -315,8 +321,9 @@ restart:
                        space = 1024;
                else {
                        space = sbspace(&so->so_snd);
                        space = 1024;
                else {
                        space = sbspace(&so->so_snd);

-                       if (space <= 0 ||
-                          (sosendallatonce(so) && space < uio->uio_resid) ||
+                       if (space <= rlen ||
+                          (sosendallatonce(so) &&
+                               space < uio->uio_resid + rlen) ||

                           (uio->uio_resid >= CLBYTES && space < CLBYTES &&
                           so->so_snd.sb_cc >= CLBYTES &&
                           (so->so_state & SS_NBIO) == 0)) {
                           (uio->uio_resid >= CLBYTES && space < CLBYTES &&
                           so->so_snd.sb_cc >= CLBYTES &&
                           (so->so_state & SS_NBIO) == 0)) {


@@ -334,31 +341,19 @@ restart:
                }
                splx(s);
                mp = &top;
                }
                splx(s);
                mp = &top;

-               while (uio->uio_resid > 0 && space > 0) {
-                       register struct iovec *iov = uio->uio_iov;
-
-                       if (iov->iov_len == 0) {
-                               uio->uio_iov++;
-                               uio->uio_iovcnt--;
-                               if (uio->uio_iovcnt < 0)
-                                       panic("sosend");
-                               continue;
-                       }
+               space -= rlen;
+               while (space > 0) {

                        MGET(m, M_WAIT, MT_DATA);
                        MGET(m, M_WAIT, MT_DATA);

-                       if (m == NULL) {
-                               error = ENOBUFS;                /* SIGPIPE? */
-                               goto release;
-                       }
-                       if (iov->iov_len >= CLBYTES && space >= CLBYTES) {
-                               register struct mbuf *p;
-                               MCLGET(p, 1);
-                               if (p == 0)
+                       if (uio->uio_resid >= CLBYTES / 2 && space >= CLBYTES) {
+                               MCLGET(m);
+                               if (m->m_len != CLBYTES)

                                        goto nopages;
                                        goto nopages;

-                               m->m_off = (int)p - (int)m;
-                               len = CLBYTES;
+                               len = MIN(CLBYTES, uio->uio_resid);
+                               space -= CLBYTES;

                        } else {
 nopages:
                        } else {
 nopages:

-                               len = MIN(MLEN, iov->iov_len);
+                               len = MIN(MIN(MLEN, uio->uio_resid), space);
+                               space -= len;

                        }
                        error = uiomove(mtod(m, caddr_t), len, UIO_WRITE, uio);
                        m->m_len = len;
                        }
                        error = uiomove(mtod(m, caddr_t), len, UIO_WRITE, uio);
                        m->m_len = len;


@@ -366,19 +361,20 @@ nopages:
                        if (error)
                                goto release;
                        mp = &m->m_next;
                        if (error)
                                goto release;
                        mp = &m->m_next;

-                       space -= len;
-               }
-               if (top) {
-                       if (dontroute)
-                               so->so_options |= SO_DONTROUTE;
-                       s = splnet();
-                       error = (*so->so_proto->pr_usrreq)(so,
-                           (flags & MSG_OOB) ? PRU_SENDOOB : PRU_SEND,
-                           top, (caddr_t)nam, rights);
-                       splx(s);
-                       if (dontroute)
-                               so->so_options &= ~SO_DONTROUTE;
+                       if (uio->uio_resid <= 0)
+                               break;

                }
                }

+               if (dontroute)
+                       so->so_options |= SO_DONTROUTE;
+               s = splnet();                                   /* XXX */
+               error = (*so->so_proto->pr_usrreq)(so,
+                   (flags & MSG_OOB) ? PRU_SENDOOB : PRU_SEND,
+                   top, (caddr_t)nam, rights);
+               splx(s);
+               if (dontroute)
+                       so->so_options &= ~SO_DONTROUTE;
+               rights = 0;
+               rlen = 0;

                top = 0;
                first = 0;
                if (error)
                top = 0;
                first = 0;
                if (error)


@@ -389,9 +385,23 @@ release:
        sbunlock(&so->so_snd);
        if (top)
                m_freem(top);
        sbunlock(&so->so_snd);
        if (top)
                m_freem(top);

+       if (error == EPIPE)
+               psignal(u.u_procp, SIGPIPE);

        return (error);
 }
 
        return (error);
 }
 

+/*
+ * Implement receive operations on a socket.
+ * We depend on the way that records are added to the sockbuf
+ * by sbappend*.  In particular, each record (mbufs linked through m_next)
+ * must begin with an address if the protocol so specifies,
+ * followed by an optional mbuf containing access rights if supported
+ * by the protocol, and then zero or more mbufs of data.
+ * In order to avoid blocking network interrupts for the entire time here,
+ * we splx() while doing the actual copy to user space.
+ * Although the sockbuf is locked, new data may still be appended,
+ * and thus we must maintain consistency of the sockbuf during that time.
+ */

 soreceive(so, aname, uio, flags, rightsp)
        register struct socket *so;
        struct mbuf **aname;
 soreceive(so, aname, uio, flags, rightsp)
        register struct socket *so;
        struct mbuf **aname;


@@ -399,8 +409,8 @@ soreceive(so, aname, uio, flags, rightsp)
        int flags;
        struct mbuf **rightsp;
 {
        int flags;
        struct mbuf **rightsp;
 {

-       register struct mbuf *m, *n;
-       register int len, error = 0, s, tomark;
+       register struct mbuf *m;
+       register int len, error = 0, s, offset;

        struct protosw *pr = so->so_proto;
        struct mbuf *nextrecord;
        int moff;
        struct protosw *pr = so->so_proto;
        struct mbuf *nextrecord;
        int moff;


@@ -411,10 +421,8 @@ soreceive(so, aname, uio, flags, rightsp)
                *aname = 0;
        if (flags & MSG_OOB) {
                m = m_get(M_WAIT, MT_DATA);
                *aname = 0;
        if (flags & MSG_OOB) {
                m = m_get(M_WAIT, MT_DATA);

-               if (m == 0)
-                       return (ENOBUFS);

                error = (*pr->pr_usrreq)(so, PRU_RCVOOB,
                error = (*pr->pr_usrreq)(so, PRU_RCVOOB,

-                   m, (struct mbuf *)0, (struct mbuf *)0);
+                   m, (struct mbuf *)(flags & MSG_PEEK), (struct mbuf *)0);

                if (error)
                        goto bad;
                do {
                if (error)
                        goto bad;
                do {


@@ -435,23 +443,25 @@ restart:
        sblock(&so->so_rcv);
        s = splnet();
 
        sblock(&so->so_rcv);
        s = splnet();
 

-#define        rcverr(errno)   { error = errno; splx(s); goto release; }

        if (so->so_rcv.sb_cc == 0) {
                if (so->so_error) {
                        error = so->so_error;
                        so->so_error = 0;
        if (so->so_rcv.sb_cc == 0) {
                if (so->so_error) {
                        error = so->so_error;
                        so->so_error = 0;

-                       splx(s);

                        goto release;
                }
                        goto release;
                }

-               if (so->so_state & SS_CANTRCVMORE) {
-                       splx(s);
+               if (so->so_state & SS_CANTRCVMORE)

                        goto release;
                        goto release;

-               }

                if ((so->so_state & SS_ISCONNECTED) == 0 &&
                if ((so->so_state & SS_ISCONNECTED) == 0 &&

-                   (so->so_proto->pr_flags & PR_CONNREQUIRED))
-                       rcverr(ENOTCONN);
-               if (so->so_state & SS_NBIO)
-                       rcverr(EWOULDBLOCK);
+                   (so->so_proto->pr_flags & PR_CONNREQUIRED)) {
+                       error = ENOTCONN;
+                       goto release;
+               }
+               if (uio->uio_resid == 0)
+                       goto release;
+               if (so->so_state & SS_NBIO) {
+                       error = EWOULDBLOCK;
+                       goto release;
+               }

                sbunlock(&so->so_rcv);
                sbwait(&so->so_rcv);
                splx(s);
                sbunlock(&so->so_rcv);
                sbwait(&so->so_rcv);
                splx(s);


@@ -459,68 +469,80 @@ restart:
        }
        u.u_ru.ru_msgrcv++;
        m = so->so_rcv.sb_mb;
        }
        u.u_ru.ru_msgrcv++;
        m = so->so_rcv.sb_mb;

+       if (m == 0)
+               panic("receive 1");
+       nextrecord = m->m_act;

        if (pr->pr_flags & PR_ADDR) {
        if (pr->pr_flags & PR_ADDR) {

-               if (m == 0 || m->m_type != MT_SONAME)
+               if (m->m_type != MT_SONAME)

                        panic("receive 1a");
                if (flags & MSG_PEEK) {
                        if (aname)
                                *aname = m_copy(m, 0, m->m_len);
                        panic("receive 1a");
                if (flags & MSG_PEEK) {
                        if (aname)
                                *aname = m_copy(m, 0, m->m_len);

-                       else
-                               m = m->m_act;
+                       m = m->m_next;

                } else {
                } else {

+                       sbfree(&so->so_rcv, m);

                        if (aname) {
                                *aname = m;
                        if (aname) {
                                *aname = m;

-                               sbfree(&so->so_rcv, m);
-if(m->m_next) panic("receive 1b");
-                               so->so_rcv.sb_mb = m = m->m_act;
-                       } else
-                               m = sbdroprecord(&so->so_rcv);
+                               m = m->m_next;
+                               (*aname)->m_next = 0;
+                               so->so_rcv.sb_mb = m;
+                       } else {
+                               MFREE(m, so->so_rcv.sb_mb);
+                               m = so->so_rcv.sb_mb;
+                       }
+                       if (m)
+                               m->m_act = nextrecord;

                }
        }
        if (m && m->m_type == MT_RIGHTS) {
                if ((pr->pr_flags & PR_RIGHTS) == 0)
                }
        }
        if (m && m->m_type == MT_RIGHTS) {
                if ((pr->pr_flags & PR_RIGHTS) == 0)

-                       panic("receive 2a");
+                       panic("receive 2");

                if (flags & MSG_PEEK) {
                        if (rightsp)
                                *rightsp = m_copy(m, 0, m->m_len);
                if (flags & MSG_PEEK) {
                        if (rightsp)
                                *rightsp = m_copy(m, 0, m->m_len);

-                       else
-                               m = m->m_act;
+                       m = m->m_next;

                } else {
                } else {

+                       sbfree(&so->so_rcv, m);

                        if (rightsp) {
                                *rightsp = m;
                        if (rightsp) {
                                *rightsp = m;

-                               sbfree(&so->so_rcv, m);
-if(m->m_next) panic("receive 2b");
-                               so->so_rcv.sb_mb = m = m->m_act;
-                       } else
-                               m = sbdroprecord(&so->so_rcv);
+                               so->so_rcv.sb_mb = m->m_next;
+                               m->m_next = 0;
+                               m = so->so_rcv.sb_mb;
+                       } else {
+                               MFREE(m, so->so_rcv.sb_mb);
+                               m = so->so_rcv.sb_mb;
+                       }
+                       if (m)
+                               m->m_act = nextrecord;

                }
        }
                }
        }

-       if (m == 0)
-               panic("receive 3");

        moff = 0;
        moff = 0;

-       tomark = so->so_oobmark;
+       offset = 0;

        while (m && uio->uio_resid > 0 && error == 0) {
        while (m && uio->uio_resid > 0 && error == 0) {

+               if (m->m_type != MT_DATA && m->m_type != MT_HEADER)
+                       panic("receive 3");

                len = uio->uio_resid;
                so->so_state &= ~SS_RCVATMARK;
                len = uio->uio_resid;
                so->so_state &= ~SS_RCVATMARK;

-               if (tomark && len > tomark)
-                       len = tomark;
-               if (moff+len > m->m_len - moff)
+               if (so->so_oobmark && len > so->so_oobmark - offset)
+                       len = so->so_oobmark - offset;
+               if (len > m->m_len - moff)

                        len = m->m_len - moff;
                splx(s);
                error =
                    uiomove(mtod(m, caddr_t) + moff, (int)len, UIO_READ, uio);
                s = splnet();
                        len = m->m_len - moff;
                splx(s);
                error =
                    uiomove(mtod(m, caddr_t) + moff, (int)len, UIO_READ, uio);
                s = splnet();

-               if (len == m->m_len) {
-                       if ((flags & MSG_PEEK) == 0) {
+               if (len == m->m_len - moff) {
+                       if (flags & MSG_PEEK) {
+                               m = m->m_next;
+                               moff = 0;
+                       } else {

                                nextrecord = m->m_act;
                                sbfree(&so->so_rcv, m);
                                nextrecord = m->m_act;
                                sbfree(&so->so_rcv, m);

-                               MFREE(m, n);
-                               if (m = n)
+                               MFREE(m, so->so_rcv.sb_mb);
+                               m = so->so_rcv.sb_mb;
+                               if (m)

                                        m->m_act = nextrecord;
                                        m->m_act = nextrecord;

-                               so->so_rcv.sb_mb = m;
-                       } else
-                               m = m->m_next;
-                       moff = 0;
+                       }

                } else {
                        if (flags & MSG_PEEK)
                                moff += len;
                } else {
                        if (flags & MSG_PEEK)
                                moff += len;


@@ -530,17 +552,15 @@ if(m->m_next) panic("receive 2b");
                                so->so_rcv.sb_cc -= len;
                        }
                }
                                so->so_rcv.sb_cc -= len;
                        }
                }

-               if ((flags & MSG_PEEK) == 0 && so->so_oobmark) {
-                       so->so_oobmark -= len;
-                       if (so->so_oobmark == 0) {
-                               so->so_state |= SS_RCVATMARK;
-                               break;
-                       }
-               }
-               if (tomark) {
-                       tomark -= len;
-                       if (tomark == 0)
-                               break;
+               if (so->so_oobmark) {
+                       if ((flags & MSG_PEEK) == 0) {
+                               so->so_oobmark -= len;
+                               if (so->so_oobmark == 0) {
+                                       so->so_state |= SS_RCVATMARK;
+                                       break;
+                               }
+                       } else
+                               offset += len;

                }
        }
        if ((flags & MSG_PEEK) == 0) {
                }
        }
        if ((flags & MSG_PEEK) == 0) {


@@ -551,11 +571,12 @@ if(m->m_next) panic("receive 2b");
                if (pr->pr_flags & PR_WANTRCVD && so->so_pcb)
                        (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0,
                            (struct mbuf *)0, (struct mbuf *)0);
                if (pr->pr_flags & PR_WANTRCVD && so->so_pcb)
                        (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0,
                            (struct mbuf *)0, (struct mbuf *)0);

+               if (error == 0 && rightsp && *rightsp &&
+                   pr->pr_domain->dom_externalize)
+                       error = (*pr->pr_domain->dom_externalize)(*rightsp);

        }
 release:
        sbunlock(&so->so_rcv);
        }
 release:
        sbunlock(&so->so_rcv);

-       if (error == 0 && rightsp && *rightsp && pr->pr_domain->dom_externalize)
-               error = (*pr->pr_domain->dom_externalize)(*rightsp);

        splx(s);
        return (error);
 }
        splx(s);
        return (error);
 }


@@ -595,84 +616,184 @@ sorflush(so)
        sbrelease(&asb);
 }
 
        sbrelease(&asb);
 }
 

-sosetopt(so, level, optname, m)
+sosetopt(so, level, optname, m0)

        register struct socket *so;
        int level, optname;
        register struct socket *so;
        int level, optname;

-       register struct mbuf *m;
+       struct mbuf *m0;

 {
 {

+       int error = 0;
+       register struct mbuf *m = m0;
+
+       if (level != SOL_SOCKET) {
+               if (so->so_proto && so->so_proto->pr_ctloutput)
+                       return ((*so->so_proto->pr_ctloutput)
+                                 (PRCO_SETOPT, so, level, optname, &m0));
+               error = ENOPROTOOPT;
+       } else {
+               switch (optname) {
+
+               case SO_LINGER:
+                       if (m == NULL || m->m_len != sizeof (struct linger)) {
+                               error = EINVAL;
+                               goto bad;
+                       }
+                       so->so_linger = mtod(m, struct linger *)->l_linger;
+                       /* fall thru... */
+
+               case SO_DEBUG:
+               case SO_KEEPALIVE:
+               case SO_DONTROUTE:
+               case SO_USELOOPBACK:
+               case SO_BROADCAST:
+               case SO_REUSEADDR:
+               case SO_OOBINLINE:
+                       if (m == NULL || m->m_len < sizeof (int)) {
+                               error = EINVAL;
+                               goto bad;
+                       }
+                       if (*mtod(m, int *))
+                               so->so_options |= optname;
+                       else
+                               so->so_options &= ~optname;
+                       break;
+
+               case SO_SNDBUF:
+               case SO_RCVBUF:
+               case SO_SNDLOWAT:
+               case SO_RCVLOWAT:
+               case SO_SNDTIMEO:
+               case SO_RCVTIMEO:
+                       if (m == NULL || m->m_len < sizeof (int)) {
+                               error = EINVAL;
+                               goto bad;
+                       }
+                       switch (optname) {
+
+                       case SO_SNDBUF:
+                       case SO_RCVBUF:
+                               if (sbreserve(optname == SO_SNDBUF ? &so->so_snd :
+                                   &so->so_rcv, *mtod(m, int *)) == 0) {
+                                       error = ENOBUFS;
+                                       goto bad;
+                               }
+                               break;

 
 

-       if (level != SOL_SOCKET)
-               return (EINVAL);        /* XXX */
-       switch (optname) {
-
-       case SO_DEBUG:
-       case SO_KEEPALIVE:
-       case SO_DONTROUTE:
-       case SO_USELOOPBACK:
-       case SO_REUSEADDR:
-               so->so_options |= optname;
-               break;
-
-       case SO_LINGER:
-               if (m == NULL || m->m_len != sizeof (int))
-                       return (EINVAL);
-               so->so_options |= SO_LINGER;
-               so->so_linger = *mtod(m, int *);
-               break;
-
-       case SO_DONTLINGER:
-               so->so_options &= ~SO_LINGER;
-               so->so_linger = 0;
-               break;
-
-       default:
-               return (EINVAL);
+                       case SO_SNDLOWAT:
+                               so->so_snd.sb_lowat = *mtod(m, int *);
+                               break;
+                       case SO_RCVLOWAT:
+                               so->so_rcv.sb_lowat = *mtod(m, int *);
+                               break;
+                       case SO_SNDTIMEO:
+                               so->so_snd.sb_timeo = *mtod(m, int *);
+                               break;
+                       case SO_RCVTIMEO:
+                               so->so_rcv.sb_timeo = *mtod(m, int *);
+                               break;
+                       }
+                       break;
+
+               default:
+                       error = ENOPROTOOPT;
+                       break;
+               }

        }
        }

-       return (0);
+bad:
+       if (m)
+               (void) m_free(m);
+       return (error);

 }
 
 }
 

-sogetopt(so, level, optname, m)
+sogetopt(so, level, optname, mp)

        register struct socket *so;
        int level, optname;
        register struct socket *so;
        int level, optname;

-       register struct mbuf *m;
+       struct mbuf **mp;

 {
 {

+       register struct mbuf *m;

 
 

-       if (level != SOL_SOCKET)
-               return (EINVAL);        /* XXX */
-       switch (optname) {
-
-       case SO_USELOOPBACK:
-       case SO_DONTROUTE:
-       case SO_DEBUG:
-       case SO_KEEPALIVE:
-       case SO_LINGER:
-       case SO_REUSEADDR:
-               if ((so->so_options & optname) == 0)
+       if (level != SOL_SOCKET) {
+               if (so->so_proto && so->so_proto->pr_ctloutput) {
+                       return ((*so->so_proto->pr_ctloutput)
+                                 (PRCO_GETOPT, so, level, optname, mp));
+               } else 

                        return (ENOPROTOOPT);
                        return (ENOPROTOOPT);

-               if (optname == SO_LINGER && m != NULL) {
-                       *mtod(m, int *) = so->so_linger;
-                       m->m_len = sizeof (so->so_linger);
-               }
-               break;
+       } else {
+               m = m_get(M_WAIT, MT_SOOPTS);
+               m->m_len = sizeof (int);
+
+               switch (optname) {
+
+               case SO_LINGER:
+                       m->m_len = sizeof (struct linger);
+                       mtod(m, struct linger *)->l_onoff =
+                               so->so_options & SO_LINGER;
+                       mtod(m, struct linger *)->l_linger = so->so_linger;
+                       break;
+
+               case SO_USELOOPBACK:
+               case SO_DONTROUTE:
+               case SO_DEBUG:
+               case SO_KEEPALIVE:
+               case SO_REUSEADDR:
+               case SO_BROADCAST:
+               case SO_OOBINLINE:
+                       *mtod(m, int *) = so->so_options & optname;
+                       break;
+
+               case SO_TYPE:
+                       *mtod(m, int *) = so->so_type;
+                       break;
+
+               case SO_ERROR:
+                       *mtod(m, int *) = so->so_error;
+                       so->so_error = 0;
+                       break;
+
+               case SO_SNDBUF:
+                       *mtod(m, int *) = so->so_snd.sb_hiwat;
+                       break;
+
+               case SO_RCVBUF:
+                       *mtod(m, int *) = so->so_rcv.sb_hiwat;
+                       break;
+
+               case SO_SNDLOWAT:
+                       *mtod(m, int *) = so->so_snd.sb_lowat;
+                       break;
+
+               case SO_RCVLOWAT:
+                       *mtod(m, int *) = so->so_rcv.sb_lowat;
+                       break;
+
+               case SO_SNDTIMEO:
+                       *mtod(m, int *) = so->so_snd.sb_timeo;
+                       break;

 
 

-       default:
-               return (EINVAL);
+               case SO_RCVTIMEO:
+                       *mtod(m, int *) = so->so_rcv.sb_timeo;
+                       break;
+
+               default:
+                       (void)m_free(m);
+                       return (ENOPROTOOPT);
+               }
+               *mp = m;
+               return (0);

        }
        }

-       return (0);

 }
 
 sohasoutofband(so)
        register struct socket *so;
 {
 }
 
 sohasoutofband(so)
        register struct socket *so;
 {

-
-       if (so->so_pgrp == 0)
-               return;
-       if (so->so_pgrp > 0)
-               gsignal(so->so_pgrp, SIGURG);
-       else {
-               struct proc *p = pfind(-so->so_pgrp);
-
-               if (p)
-                       psignal(p, SIGURG);
+       struct proc *p;
+
+       if (so->so_pgrp < 0)
+               gsignal(-so->so_pgrp, SIGURG);
+       else if (so->so_pgrp > 0 && (p = pfind(so->so_pgrp)) != 0)
+               psignal(p, SIGURG);
+       if (so->so_rcv.sb_sel) {
+               selwakeup(so->so_rcv.sb_sel, so->so_rcv.sb_flags & SB_COLL);
+               so->so_rcv.sb_sel = 0;
+               so->so_rcv.sb_flags &= ~SB_COLL;

        }
 }
        }
 }