Emulator KLD for SysVR4 executables grabbed from NetBSD.

See http://www.freebsd.org/~newton/freebsd-svr4 for limitations,
capabilities, history and TO-DO list.

1 files changed, 167 insertions, 0 deletions

diff --git a/sys/svr4/svr4_ioctl.c b/sys/svr4/svr4_ioctl.c
new file mode 100644
index 0000000..2ce3004
--- /dev/null
+++ b/sys/svr4/svr4_ioctl.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 1998 Mark Newton
+ * Copyright (c) 1994 Christos Zoulas
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#include <sys/unistd.h>
+#include <sys/fcntl.h>
+#include <sys/termios.h>
+#include <sys/tty.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/mount.h>
+#include <net/if.h>
+#include <sys/malloc.h>
+
+#include <sys/sysproto.h>
+
+#include <svr4/svr4.h>
+#include <svr4/svr4_types.h>
+#include <svr4/svr4_util.h>
+#include <svr4/svr4_signal.h>
+#include <svr4/svr4_proto.h>
+#include <svr4/svr4_stropts.h>
+#include <svr4/svr4_ioctl.h>
+#include <svr4/svr4_termios.h>
+#include <svr4/svr4_ttold.h>
+#include <svr4/svr4_filio.h>
+#include <svr4/svr4_sockio.h>
+
+#ifdef DEBUG_SVR4
+static void svr4_decode_cmd __P((u_long, char *, char *, int *, int *));
+/*
+ * Decode an ioctl command symbolically
+ */
+static void
+svr4_decode_cmd(cmd, dir, c, num, argsiz)
+	u_long		  cmd;
+	char		 *dir, *c;
+	int		 *num, *argsiz;
+{
+	if (cmd & SVR4_IOC_VOID)
+		*dir++ = 'V';
+	if (cmd & SVR4_IOC_IN)
+		*dir++ = 'R';
+	if (cmd & SVR4_IOC_OUT)
+		*dir++ = 'W';
+	*dir = '\0';
+	if (cmd & SVR4_IOC_INOUT)
+		*argsiz = (cmd >> 16) & 0xff;
+	else
+		*argsiz = -1;
+
+	*c = (cmd >> 8) & 0xff;
+	*num = cmd & 0xff;
+}
+#endif
+
+int
+svr4_sys_ioctl(p, uap)
+	register struct proc *p;
+	struct svr4_sys_ioctl_args *uap;
+{
+	int             *retval;
+	struct file	*fp;
+	struct filedesc	*fdp;
+	u_long		 cmd;
+	int (*fun) __P((struct file *, struct proc *, register_t *,
+			int, u_long, caddr_t));
+#ifdef DEBUG_SVR4
+	char		 dir[4];
+	char		 c;
+	int		 num;
+	int		 argsiz;
+
+	svr4_decode_cmd(SCARG(uap, com), dir, &c, &num, &argsiz);
+
+	DPRINTF(("svr4_ioctl[%x](%d, _IO%s(%c, %d, %d), %p);\n", SCARG(uap, com), SCARG(uap, fd),
+	    dir, c, num, argsiz, SCARG(uap, data)));
+#endif
+	retval = p->p_retval;
+	fdp = p->p_fd;
+	cmd = SCARG(uap, com);
+
+	if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles ||
+	    (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL)
+		return EBADF;
+
+	if ((fp->f_flag & (FREAD | FWRITE)) == 0)
+		return EBADF;
+
+#if defined(DEBUG_SVR4)
+	if (fp->f_type == DTYPE_SOCKET) {
+	        struct socket *so = fp->f_data;
+		DPRINTF(("<<< IN: so_state = 0x%x\n", so->so_state));
+	}
+#endif
+
+	switch (cmd & 0xff00) {
+	case SVR4_tIOC:
+	        DPRINTF(("ttold\n"));
+		fun = svr4_ttold_ioctl;
+		break;
+
+	case SVR4_TIOC:
+	        DPRINTF(("term\n"));
+		fun = svr4_term_ioctl;
+		break;
+
+	case SVR4_STR:
+	        DPRINTF(("stream\n"));
+		fun = svr4_stream_ioctl;
+		break;
+
+	case SVR4_FIOC:
+                DPRINTF(("file\n"));
+		fun = svr4_fil_ioctl;
+		break;
+
+	case SVR4_SIOC:
+	        DPRINTF(("socket\n"));
+		fun = svr4_sock_ioctl;
+		break;
+
+	case SVR4_XIOC:
+		/* We do not support those */
+		return EINVAL;
+
+	default:
+		DPRINTF(("Unimplemented ioctl %lx\n", cmd));
+		return 0;	/* XXX: really ENOSYS */
+	}
+#if defined(DEBUG_SVR4)
+	if (fp->f_type == DTYPE_SOCKET) {
+	        struct socket *so = fp->f_data;
+		DPRINTF((">>> OUT: so_state = 0x%x\n", so->so_state));
+	}
+#endif
+	return (*fun)(fp, p, retval, SCARG(uap, fd), cmd, SCARG(uap, data));
+}