BSD 4_3_Tahoe development

Work on file usr/src/sys/sys/sys_socket.c

Synthesized-from: CSRG/cd2/4.3tahoe

diff --git a/usr/src/sys/sys/sys_socket.c b/usr/src/sys/sys/sys_socket.c
new file mode 100644 (file)
index 0000000..84b045d
--- /dev/null
+++ b/usr/src/sys/sys/sys_socket.c
@@ -0,0 +1,164 @@
+/*
+ * 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 the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, 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'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *     %W% (Berkeley) %G%
+ */
+
+#include "param.h"
+#include "systm.h"
+#include "dir.h"
+#include "user.h"
+#include "file.h"
+#include "mbuf.h"
+#include "protosw.h"
+#include "socket.h"
+#include "socketvar.h"
+#include "ioctl.h"
+#include "uio.h"
+#include "stat.h"
+
+#include "../net/if.h"
+#include "../net/route.h"
+
+int    soo_rw(), soo_ioctl(), soo_select(), soo_close();
+struct fileops socketops =
+    { soo_rw, soo_ioctl, soo_select, soo_close };
+
+soo_rw(fp, rw, uio)
+       struct file *fp;
+       enum uio_rw rw;
+       struct uio *uio;
+{
+       int soreceive(), sosend();
+
+       return (
+           (*(rw==UIO_READ?soreceive:sosend))
+             ((struct socket *)fp->f_data, 0, uio, 0, 0));
+}
+
+soo_ioctl(fp, cmd, data)
+       struct file *fp;
+       int cmd;
+       register caddr_t data;
+{
+       register struct socket *so = (struct socket *)fp->f_data;
+
+       switch (cmd) {
+
+       case FIONBIO:
+               if (*(int *)data)
+                       so->so_state |= SS_NBIO;
+               else
+                       so->so_state &= ~SS_NBIO;
+               return (0);
+
+       case FIOASYNC:
+               if (*(int *)data)
+                       so->so_state |= SS_ASYNC;
+               else
+                       so->so_state &= ~SS_ASYNC;
+               return (0);
+
+       case FIONREAD:
+               *(int *)data = so->so_rcv.sb_cc;
+               return (0);
+
+       case SIOCSPGRP:
+               so->so_pgrp = *(int *)data;
+               return (0);
+
+       case SIOCGPGRP:
+               *(int *)data = so->so_pgrp;
+               return (0);
+
+       case SIOCATMARK:
+               *(int *)data = (so->so_state&SS_RCVATMARK) != 0;
+               return (0);
+       }
+       /*
+        * Interface/routing/protocol specific ioctls:
+        * interface and routing ioctls should have a
+        * different entry since a socket's unnecessary
+        */
+#define        cmdbyte(x)      (((x) >> 8) & 0xff)
+       if (cmdbyte(cmd) == 'i')
+               return (ifioctl(so, cmd, data));
+       if (cmdbyte(cmd) == 'r')
+               return (rtioctl(cmd, data));
+       return ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL, 
+           (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0));
+}
+
+soo_select(fp, which)
+       struct file *fp;
+       int which;
+{
+       register struct socket *so = (struct socket *)fp->f_data;
+       register int s = splnet();
+
+       switch (which) {
+
+       case FREAD:
+               if (soreadable(so)) {
+                       splx(s);
+                       return (1);
+               }
+               sbselqueue(&so->so_rcv);
+               break;
+
+       case FWRITE:
+               if (sowriteable(so)) {
+                       splx(s);
+                       return (1);
+               }
+               sbselqueue(&so->so_snd);
+               break;
+
+       case 0:
+               if (so->so_oobmark ||
+                   (so->so_state & SS_RCVATMARK)) {
+                       splx(s);
+                       return (1);
+               }
+               sbselqueue(&so->so_rcv);
+               break;
+       }
+       splx(s);
+       return (0);
+}
+
+/*ARGSUSED*/
+soo_stat(so, ub)
+       register struct socket *so;
+       register struct stat *ub;
+{
+
+       bzero((caddr_t)ub, sizeof (*ub));
+       return ((*so->so_proto->pr_usrreq)(so, PRU_SENSE,
+           (struct mbuf *)ub, (struct mbuf *)0, 
+           (struct mbuf *)0));
+}
+
+soo_close(fp)
+       struct file *fp;
+{
+       int error = 0;
+
+       if (fp->f_data)
+               error = soclose((struct socket *)fp->f_data);
+       fp->f_data = 0;
+       return (error);
+}