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, 1629 insertions, 0 deletions

diff --git a/sys/svr4/svr4_misc.c b/sys/svr4/svr4_misc.c
new file mode 100644
index 0000000..5b537c6
--- /dev/null
+++ b/sys/svr4/svr4_misc.c
@@ -0,0 +1,1629 @@
+/*
+ * 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.
+ */
+
+/*
+ * SVR4 compatibility module.
+ *
+ * SVR4 system calls that are implemented differently in BSD are
+ * handled here.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/namei.h>
+#include <sys/dirent.h>
+#include <sys/proc.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/file.h>
+#include <sys/filedesc.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/resource.h>
+#include <sys/resourcevar.h>
+#include <sys/socket.h>
+#include <sys/vnode.h>
+#include <sys/uio.h>
+#include <sys/wait.h>
+#include <sys/utsname.h>
+#include <sys/unistd.h>
+#include <sys/times.h>
+#include <sys/fcntl.h>
+#include <sys/sem.h>
+#include <sys/msg.h>
+#include <sys/ptrace.h>
+#include <sys/signalvar.h>
+#include <ufs/ufs/dir.h>
+#include <vm/vm_zone.h>
+
+#include <sys/sysproto.h>
+
+#include <netinet/in.h>
+
+#include <svr4/svr4.h>
+#include <svr4/svr4_types.h>
+#include <svr4/svr4_signal.h>
+#include <svr4/svr4_proto.h>
+#include <svr4/svr4_util.h>
+#include <svr4/svr4_sysconfig.h>
+#include <svr4/svr4_dirent.h>
+#include <svr4/svr4_acl.h>
+#include <svr4/svr4_time.h>
+#include <svr4/svr4_ulimit.h>
+#include <svr4/svr4_statvfs.h>
+#include <svr4/svr4_hrt.h>
+#include <svr4/svr4_mman.h>
+#include <svr4/svr4_wait.h>
+
+#include <machine/vmparam.h>
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/vm_map.h>
+#include <vm/vm_prot.h>
+
+#if defined(NetBSD)
+# if defined(UVM)
+#  include <uvm/uvm_extern.h>
+# endif
+#endif
+
+#define	BSD_DIRENT(cp)		((struct dirent *)(cp))
+
+extern void *M_ZOMBIE;
+extern void *M_SUBPROC;
+
+extern int bsd_to_svr4_sig[];
+static int svr4_mknod __P((struct proc *, register_t *, char *,
+    svr4_mode_t, svr4_dev_t));
+
+static __inline clock_t timeval_to_clock_t __P((struct timeval *));
+static int svr4_setinfo	__P((struct proc *, int, svr4_siginfo_t *));
+
+struct svr4_hrtcntl_args;
+static int svr4_hrtcntl	__P((struct proc *, struct svr4_hrtcntl_args *,
+    register_t *));
+static void bsd_statfs_to_svr4_statvfs __P((const struct statfs *,
+    struct svr4_statvfs *));
+static void bsd_statfs_to_svr4_statvfs64 __P((const struct statfs *,
+    struct svr4_statvfs64 *));
+static struct proc *svr4_pfind __P((pid_t pid));
+
+/* BOGUS noop */
+#if defined(BOGUS)
+int
+svr4_sys_setitimer(p, uap)
+        register struct proc *p;
+	struct svr4_sys_setitimer_args *uap;
+{
+        p->p_retval[0] = 0;
+	return 0;
+}
+#endif
+
+int
+svr4_sys_wait(p, uap)
+	struct proc *p;
+	struct svr4_sys_wait_args *uap;
+{
+	struct wait_args w4;
+	int error, *retval = p->p_retval, st, sig;
+	size_t sz = sizeof(*SCARG(&w4, status));
+
+	SCARG(&w4, rusage) = NULL;
+	SCARG(&w4, options) = 0;
+
+	if (SCARG(uap, status) == NULL) {
+		caddr_t sg = stackgap_init();
+
+		SCARG(&w4, status) = stackgap_alloc(&sg, sz);
+	}
+	else
+		SCARG(&w4, status) = SCARG(uap, status);
+
+	SCARG(&w4, pid) = WAIT_ANY;
+
+	if ((error = wait4(p, &w4)) != 0)
+		return error;
+      
+	if ((error = copyin(SCARG(&w4, status), &st, sizeof(st))) != 0)
+		return error;
+
+	if (WIFSIGNALED(st)) {
+		sig = WTERMSIG(st);
+		if (sig >= 0 && sig < NSIG)
+			st = (st & ~0177) | bsd_to_svr4_sig[sig];
+	} else if (WIFSTOPPED(st)) {
+		sig = WSTOPSIG(st);
+		if (sig >= 0 && sig < NSIG)
+			st = (st & ~0xff00) | (bsd_to_svr4_sig[sig] << 8);
+	}
+
+	/*
+	 * It looks like wait(2) on svr4/solaris/2.4 returns
+	 * the status in retval[1], and the pid on retval[0].
+	 */
+	retval[1] = st;
+
+	if (SCARG(uap, status))
+		if ((error = copyout(&st, SCARG(uap, status), sizeof(st))) != 0)
+			return error;
+
+	return 0;
+}
+
+int
+svr4_sys_execv(p, uap)
+	struct proc *p;
+	struct svr4_sys_execv_args *uap;
+{
+	struct execve_args ap;
+	caddr_t sg;
+
+	sg = stackgap_init();
+	CHECKALTEXIST(p, &sg, SCARG(uap, path));
+
+	SCARG(&ap, fname) = SCARG(uap, path);
+	SCARG(&ap, argv) = SCARG(uap, argp);
+	SCARG(&ap, envv) = NULL;
+
+	return execve(p, &ap);
+}
+
+int
+svr4_sys_execve(p, uap)
+	struct proc *p;
+	struct svr4_sys_execve_args *uap;
+{
+	struct execve_args ap;
+	caddr_t sg;
+
+	sg = stackgap_init();
+	CHECKALTEXIST(p, &sg, uap->path);
+
+	SCARG(&ap, fname) = SCARG(uap, path);
+	SCARG(&ap, argv) = SCARG(uap, argp);
+	SCARG(&ap, envv) = SCARG(uap, envp);
+
+	return execve(p, &ap);
+}
+
+int
+svr4_sys_time(p, v)
+	struct proc *p;
+	struct svr4_sys_time_args *v;
+{
+	struct svr4_sys_time_args *uap = v;
+	int error = 0;
+	struct timeval tv;
+
+	microtime(&tv);
+	if (SCARG(uap, t))
+		error = copyout(&tv.tv_sec, SCARG(uap, t),
+				sizeof(*(SCARG(uap, t))));
+	p->p_retval[0] = (int) tv.tv_sec;
+
+	return error;
+}
+
+
+/*
+ * Read SVR4-style directory entries.  We suck them into kernel space so
+ * that they can be massaged before being copied out to user code.  Like
+ * SunOS, we squish out `empty' entries.
+ *
+ * This is quite ugly, but what do you expect from compatibility code?
+ */
+
+int
+svr4_sys_getdents64(p, uap)
+	struct proc *p;
+	struct svr4_sys_getdents64_args *uap;
+{
+	struct dirent *bdp;
+	struct vnode *vp;
+	caddr_t inp, buf;	/* BSD-format */
+	int len, reclen;	/* BSD-format */
+	caddr_t outp;	        /* SVR4-format */
+	int resid, svr4_reclen;	/* SVR4-format */
+	struct file *fp;
+	struct uio auio;
+	struct iovec aiov;
+	struct svr4_dirent64 idb;
+	off_t off;		/* true file offset */
+	int buflen, error, eofflag;
+	u_long *cookiebuf = NULL, *cookie;
+	int ncookies = 0, retval = 0, offcnt = 0;
+
+	if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+		return (error);
+
+	if ((fp->f_flag & FREAD) == 0)
+		return (EBADF);
+
+	vp = (struct vnode *)fp->f_data;
+	if (vp->v_type != VDIR)
+		return (EINVAL);
+
+	buflen = min(MAXBSIZE, SCARG(uap, nbytes));
+	DPRINTF(("buflen = %d, spec = %d\n", buflen, SCARG(uap, nbytes)));
+	buf = malloc(buflen, M_TEMP, M_WAITOK);
+	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+	off = fp->f_offset;
+again:
+	aiov.iov_base = buf;
+	aiov.iov_len = buflen;
+	auio.uio_iov = &aiov;
+	auio.uio_iovcnt = 1;
+	auio.uio_rw = UIO_READ;
+	auio.uio_segflg = UIO_SYSSPACE;
+	auio.uio_procp = p;
+	auio.uio_resid = buflen;
+	auio.uio_offset = off;
+	DPRINTF((">>> off = %d\n", off));
+
+	/*
+         * First we read into the malloc'ed buffer, then
+         * we massage it into user space, one record at a time.
+         */
+	error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
+	    &cookiebuf);
+	if (error)
+		goto out;
+
+	inp = buf;
+	outp = SCARG(uap, dp);
+	resid = SCARG(uap, nbytes);
+	if ((len = buflen - auio.uio_resid) == 0)
+		goto eof;
+
+	for (cookie = cookiebuf; len > 0; len -= reclen) {
+		bdp = (struct dirent *)inp;
+		reclen = bdp->d_reclen;
+		if (reclen & 3)
+			panic("svr4_getdents64: bad reclen");
+		if (bdp->d_fileno == 0) {
+			inp += reclen;	/* it is a hole; squish it out */
+#if 0
+			off = *cookie++;
+#else
+			off += reclen;
+#endif
+			DPRINTF(("+++ off = %d\n", off));
+			continue;
+		}
+		svr4_reclen = SVR4_RECLEN(&idb, (bdp->d_namlen));
+
+		if (reclen > len || resid < svr4_reclen) {
+			/* entry too big for buffer, so just stop */
+			outp++;
+			DPRINTF(("+++ off = %d\n", off));
+			break;
+		}
+#if 0
+		off = *cookie++;       /* each entry points to the next */
+#else
+		off += reclen;
+#endif
+		DPRINTF(("+++ off = %d\n", off));
+
+		/*
+		 * Massage in place to make a SVR4-shaped dirent (otherwise
+		 * we have to worry about touching user memory outside of
+		 * the copyout() call).
+		 */
+		idb.d_ino = (svr4_ino64_t)bdp->d_fileno;
+		idb.d_off = (svr4_off64_t)off;
+		idb.d_reclen = (u_short)svr4_reclen;
+		strcpy(idb.d_name, bdp->d_name);
+		if ((error = copyout((caddr_t)&idb, outp, svr4_reclen)))
+			goto out;
+		DPRINTF(("d_ino = %d\nd_off = %d\nd_reclen = %d\n",
+			 idb.d_ino, idb.d_off, (u_short)idb.d_reclen));
+		DPRINTF(("d_name = %s\n", idb.d_name));
+		DPRINTF(("(bdp->d_type = %d, reclen = %d, bdp->d_namelen = %d)\n", bdp->d_type, svr4_reclen, bdp->d_namlen));
+		/* advance past this real entry */
+		inp += reclen;
+		/* advance output past SVR4-shaped entry */
+		outp += svr4_reclen;
+		resid -= svr4_reclen;
+		offcnt += svr4_reclen;
+	}
+	DPRINTF(("block finished\n"));
+	/* if we squished out the whole block, try again */
+	fp->f_offset = off;	/* update the vnode offset */
+	if (outp == SCARG(uap, dp))
+		goto again;
+
+eof:
+	retval = offcnt; /* SCARG(uap, nbytes) - resid;*/
+out:
+	VOP_UNLOCK(vp, 0, p);
+	if (cookiebuf)
+		free(cookiebuf, M_TEMP);
+	free(buf, M_TEMP);
+	DPRINTF(("\t\treturning %d\n", retval));
+	p->p_retval[0] = retval;
+	return error;
+}
+
+
+int
+svr4_sys_getdents(p, uap)
+	struct proc *p;
+	struct svr4_sys_getdents_args *uap;
+{
+	struct dirent *bdp;
+	struct vnode *vp;
+	caddr_t inp, buf;	/* BSD-format */
+	int len, reclen;	/* BSD-format */
+	caddr_t outp;		/* SVR4-format */
+	int resid, svr4_reclen;	/* SVR4-format */
+	struct file *fp;
+	struct uio auio;
+	struct iovec aiov;
+	struct svr4_dirent idb;
+	off_t off;		/* true file offset */
+	int buflen, error, eofflag;
+	u_long *cookiebuf = NULL, *cookie;
+	int ncookies = 0, *retval = p->p_retval;
+
+	if ((error = getvnode(p->p_fd, SCARG(uap, fd), &fp)) != 0)
+		return (error);
+
+	if ((fp->f_flag & FREAD) == 0)
+		return (EBADF);
+
+	vp = (struct vnode *)fp->f_data;
+	if (vp->v_type != VDIR)
+		return (EINVAL);
+
+	buflen = min(MAXBSIZE, SCARG(uap, nbytes));
+	buf = malloc(buflen, M_TEMP, M_WAITOK);
+	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+	off = fp->f_offset;
+again:
+	aiov.iov_base = buf;
+	aiov.iov_len = buflen;
+	auio.uio_iov = &aiov;
+	auio.uio_iovcnt = 1;
+	auio.uio_rw = UIO_READ;
+	auio.uio_segflg = UIO_SYSSPACE;
+	auio.uio_procp = p;
+	auio.uio_resid = buflen;
+	auio.uio_offset = off;
+	/*
+         * First we read into the malloc'ed buffer, then
+         * we massage it into user space, one record at a time.
+         */
+	error = VOP_READDIR(vp, &auio, fp->f_cred, &eofflag, &ncookies,
+	    &cookiebuf);
+	if (error)
+		goto out;
+
+	inp = buf;
+	outp = SCARG(uap, buf);
+	resid = SCARG(uap, nbytes);
+	if ((len = buflen - auio.uio_resid) == 0)
+		goto eof;
+
+	for (cookie = cookiebuf; len > 0; len -= reclen) {
+		bdp = (struct dirent *)inp;
+		reclen = bdp->d_reclen;
+		if (reclen & 3)
+			panic("svr4_getdents: bad reclen");
+		off = *cookie++;	/* each entry points to the next */
+		if ((off >> 32) != 0) {
+			uprintf("svr4_getdents: dir offset too large for emulated program");
+			error = EINVAL;
+			goto out;
+		}
+		if (bdp->d_fileno == 0) {
+			inp += reclen;	/* it is a hole; squish it out */
+			continue;
+		}
+		svr4_reclen = SVR4_RECLEN(&idb, bdp->d_namlen);
+		if (reclen > len || resid < svr4_reclen) {
+			/* entry too big for buffer, so just stop */
+			outp++;
+			break;
+		}
+		/*
+		 * Massage in place to make a SVR4-shaped dirent (otherwise
+		 * we have to worry about touching user memory outside of
+		 * the copyout() call).
+		 */
+		idb.d_ino = (svr4_ino_t)bdp->d_fileno;
+		idb.d_off = (svr4_off_t)off;
+		idb.d_reclen = (u_short)svr4_reclen;
+		strcpy(idb.d_name, bdp->d_name);
+		if ((error = copyout((caddr_t)&idb, outp, svr4_reclen)))
+			goto out;
+		/* advance past this real entry */
+		inp += reclen;
+		/* advance output past SVR4-shaped entry */
+		outp += svr4_reclen;
+		resid -= svr4_reclen;
+	}
+
+	/* if we squished out the whole block, try again */
+	if (outp == SCARG(uap, buf))
+		goto again;
+	fp->f_offset = off;	/* update the vnode offset */
+
+eof:
+	*retval = SCARG(uap, nbytes) - resid;
+out:
+	VOP_UNLOCK(vp, 0, p);
+	if (cookiebuf)
+		free(cookiebuf, M_TEMP);
+	free(buf, M_TEMP);
+	return error;
+}
+
+
+int
+svr4_sys_mmap(p, uap)
+	struct proc *p;
+	struct svr4_sys_mmap_args *uap;
+{
+	struct mmap_args	 mm;
+	int             *retval;
+
+	retval = p->p_retval;
+#define _MAP_NEW	0x80000000
+	/*
+         * Verify the arguments.
+         */
+	if (SCARG(uap, prot) & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
+		return EINVAL;	/* XXX still needed? */
+
+	if (SCARG(uap, len) == 0)
+		return EINVAL;
+
+	SCARG(&mm, prot) = SCARG(uap, prot);
+	SCARG(&mm, len) = SCARG(uap, len);
+	SCARG(&mm, flags) = SCARG(uap, flags) & ~_MAP_NEW;
+	SCARG(&mm, fd) = SCARG(uap, fd);
+	SCARG(&mm, addr) = SCARG(uap, addr);
+	SCARG(&mm, pos) = SCARG(uap, pos);
+
+	return mmap(p, &mm);
+}
+
+int
+svr4_sys_mmap64(p, uap)
+	struct proc *p;
+	struct svr4_sys_mmap64_args *uap;
+{
+	struct mmap_args	 mm;
+	void		*rp;
+
+#define _MAP_NEW	0x80000000
+	/*
+         * Verify the arguments.
+         */
+	if (SCARG(uap, prot) & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
+		return EINVAL;	/* XXX still needed? */
+
+	if (SCARG(uap, len) == 0)
+		return EINVAL;
+
+	SCARG(&mm, prot) = SCARG(uap, prot);
+	SCARG(&mm, len) = SCARG(uap, len);
+	SCARG(&mm, flags) = SCARG(uap, flags) & ~_MAP_NEW;
+	SCARG(&mm, fd) = SCARG(uap, fd);
+	SCARG(&mm, addr) = SCARG(uap, addr);
+	SCARG(&mm, pos) = SCARG(uap, pos);
+
+	rp = (void *) round_page((vm_offset_t)(p->p_vmspace->vm_daddr + MAXDSIZ));
+	if ((SCARG(&mm, flags) & MAP_FIXED) == 0 &&
+	    SCARG(&mm, addr) != 0 && (void *)SCARG(&mm, addr) < rp)
+		SCARG(&mm, addr) = rp;
+
+	return mmap(p, &mm);
+}
+
+
+int
+svr4_sys_fchroot(p, uap)
+	struct proc *p;
+	struct svr4_sys_fchroot_args *uap;
+{
+	struct filedesc	*fdp = p->p_fd;
+	struct vnode	*vp;
+	struct file	*fp;
+	int		 error;
+
+	if ((error = suser(p->p_ucred, &p->p_acflag)) != 0)
+		return error;
+	if ((error = getvnode(fdp, SCARG(uap, fd), &fp)) != 0)
+		return error;
+	vp = (struct vnode *) fp->f_data;
+	vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
+	if (vp->v_type != VDIR)
+		error = ENOTDIR;
+	else
+		error = VOP_ACCESS(vp, VEXEC, p->p_ucred, p);
+	VOP_UNLOCK(vp, 0, p);
+	if (error)
+		return error;
+	VREF(vp);
+	if (fdp->fd_rdir != NULL)
+		vrele(fdp->fd_rdir);
+	fdp->fd_rdir = vp;
+	return 0;
+}
+
+
+static int
+svr4_mknod(p, retval, path, mode, dev)
+	struct proc *p;
+	register_t *retval;
+	char *path;
+	svr4_mode_t mode;
+	svr4_dev_t dev;
+{
+	caddr_t sg = stackgap_init();
+
+	CHECKALTEXIST(p, &sg, path);
+
+	if (S_ISFIFO(mode)) {
+		struct mkfifo_args ap;
+		SCARG(&ap, path) = path;
+		SCARG(&ap, mode) = mode;
+		return mkfifo(p, &ap);
+	} else {
+		struct mknod_args ap;
+		SCARG(&ap, path) = path;
+		SCARG(&ap, mode) = mode;
+		SCARG(&ap, dev) = dev;
+		return mknod(p, &ap);
+	}
+}
+
+
+int
+svr4_sys_mknod(p, uap)
+	register struct proc *p;
+	struct svr4_sys_mknod_args *uap;
+{
+        int *retval = p->p_retval;
+	return svr4_mknod(p, retval,
+			  SCARG(uap, path), SCARG(uap, mode),
+			  svr4_to_bsd_odev_t(SCARG(uap, dev)));
+}
+
+
+int
+svr4_sys_xmknod(p, uap)
+	struct proc *p;
+	struct svr4_sys_xmknod_args *uap;
+{
+        int *retval = p->p_retval;
+	return svr4_mknod(p, retval,
+			  SCARG(uap, path), SCARG(uap, mode),
+			  svr4_to_bsd_dev_t(SCARG(uap, dev)));
+}
+
+
+int
+svr4_sys_vhangup(p, uap)
+	struct proc *p;
+	struct svr4_sys_vhangup_args *uap;
+{
+	return 0;
+}
+
+
+int
+svr4_sys_sysconfig(p, uap)
+	struct proc *p;
+	struct svr4_sys_sysconfig_args *uap;
+{
+	int *retval;
+
+	retval = &(p->p_retval[0]);
+
+	switch (SCARG(uap, name)) {
+	case SVR4_CONFIG_UNUSED:
+		*retval = 0;
+		break;
+	case SVR4_CONFIG_NGROUPS:
+		*retval = NGROUPS_MAX;
+		break;
+	case SVR4_CONFIG_CHILD_MAX:
+		*retval = maxproc;
+		break;
+	case SVR4_CONFIG_OPEN_FILES:
+		*retval = maxfiles;
+		break;
+	case SVR4_CONFIG_POSIX_VER:
+		*retval = 198808;
+		break;
+	case SVR4_CONFIG_PAGESIZE:
+		*retval = PAGE_SIZE;
+		break;
+	case SVR4_CONFIG_CLK_TCK:
+		*retval = 60;	/* should this be `hz', ie. 100? */
+		break;
+	case SVR4_CONFIG_XOPEN_VER:
+		*retval = 2;	/* XXX: What should that be? */
+		break;
+	case SVR4_CONFIG_PROF_TCK:
+		*retval = 60;	/* XXX: What should that be? */
+		break;
+	case SVR4_CONFIG_NPROC_CONF:
+		*retval = 1;	/* Only one processor for now */
+		break;
+	case SVR4_CONFIG_NPROC_ONLN:
+		*retval = 1;	/* And it better be online */
+		break;
+	case SVR4_CONFIG_AIO_LISTIO_MAX:
+	case SVR4_CONFIG_AIO_MAX:
+	case SVR4_CONFIG_AIO_PRIO_DELTA_MAX:
+		*retval = 0;	/* No aio support */
+		break;
+	case SVR4_CONFIG_DELAYTIMER_MAX:
+		*retval = 0;	/* No delaytimer support */
+		break;
+	case SVR4_CONFIG_MQ_OPEN_MAX:
+		*retval = msginfo.msgmni;
+		break;
+	case SVR4_CONFIG_MQ_PRIO_MAX:
+		*retval = 0;	/* XXX: Don't know */
+		break;
+	case SVR4_CONFIG_RTSIG_MAX:
+		*retval = 0;
+		break;
+	case SVR4_CONFIG_SEM_NSEMS_MAX:
+		*retval = seminfo.semmni;
+		break;
+	case SVR4_CONFIG_SEM_VALUE_MAX:
+		*retval = seminfo.semvmx;
+		break;
+	case SVR4_CONFIG_SIGQUEUE_MAX:
+		*retval = 0;	/* XXX: Don't know */
+		break;
+	case SVR4_CONFIG_SIGRT_MIN:
+	case SVR4_CONFIG_SIGRT_MAX:
+		*retval = 0;	/* No real time signals */
+		break;
+	case SVR4_CONFIG_TIMER_MAX:
+		*retval = 3;	/* XXX: real, virtual, profiling */
+		break;
+#if defined(NOTYET)
+	case SVR4_CONFIG_PHYS_PAGES:
+#if defined(UVM)
+		*retval = uvmexp.free;	/* XXX: free instead of total */
+#else
+		*retval = cnt.v_free_count;	/* XXX: free instead of total */
+#endif
+		break;
+	case SVR4_CONFIG_AVPHYS_PAGES:
+#if defined(UVM)
+		*retval = uvmexp.active;	/* XXX: active instead of avg */
+#else
+		*retval = cnt.v_active_count;	/* XXX: active instead of avg */
+#endif
+		break;
+#endif /* NOTYET */
+
+	default:
+		return EINVAL;
+	}
+	return 0;
+}
+
+extern int swap_pager_full;
+
+/* ARGSUSED */
+int
+svr4_sys_break(p, uap)
+	struct proc *p;
+	struct svr4_sys_break_args *uap;
+{
+	struct vmspace *vm = p->p_vmspace;
+	vm_offset_t new, old, base, ns;
+	int rv;
+
+	base = round_page((vm_offset_t) vm->vm_daddr);
+	ns = (vm_offset_t)SCARG(uap, nsize);
+	new = round_page(ns);
+	if (new > base) {
+	  if ((new - base) > (unsigned) p->p_rlimit[RLIMIT_DATA].rlim_cur) {
+			return ENOMEM;
+	  }
+	  if (new >= VM_MAXUSER_ADDRESS) {
+	    return (ENOMEM);
+	  }
+	} else if (new < base) {
+		/*
+		 * This is simply an invalid value.  If someone wants to
+		 * do fancy address space manipulations, mmap and munmap
+		 * can do most of what the user would want.
+		 */
+		return EINVAL;
+	}
+
+	old = base + ctob(vm->vm_dsize);
+
+	if (new > old) {
+		vm_size_t diff;
+		if (swap_pager_full) {
+			return (ENOMEM);
+		}
+		diff = new - old;
+		rv = vm_map_find(&vm->vm_map, NULL, 0, &old, diff, FALSE,
+			VM_PROT_ALL, VM_PROT_ALL, 0);
+		if (rv != KERN_SUCCESS) {
+			return (ENOMEM);
+		}
+		vm->vm_dsize += btoc(diff);
+	} else if (new < old) {
+		rv = vm_map_remove(&vm->vm_map, new, old);
+		if (rv != KERN_SUCCESS) {
+			return (ENOMEM);
+		}
+		vm->vm_dsize -= btoc(old - new);
+	}
+
+	return (0);
+}
+
+static __inline clock_t
+timeval_to_clock_t(tv)
+	struct timeval *tv;
+{
+	return tv->tv_sec * hz + tv->tv_usec / (1000000 / hz);
+}
+
+
+int
+svr4_sys_times(p, uap)
+	struct proc *p;
+	struct svr4_sys_times_args *uap;
+{
+	int			 error, *retval = p->p_retval;
+	struct tms		 tms;
+	struct timeval		 t;
+	struct rusage		*ru;
+	struct rusage		 r;
+	struct getrusage_args 	 ga;
+
+	caddr_t sg = stackgap_init();
+	ru = stackgap_alloc(&sg, sizeof(struct rusage));
+
+	SCARG(&ga, who) = RUSAGE_SELF;
+	SCARG(&ga, rusage) = ru;
+
+	error = getrusage(p, &ga);
+	if (error)
+		return error;
+
+	if ((error = copyin(ru, &r, sizeof r)) != 0)
+		return error;
+
+	tms.tms_utime = timeval_to_clock_t(&r.ru_utime);
+	tms.tms_stime = timeval_to_clock_t(&r.ru_stime);
+
+	SCARG(&ga, who) = RUSAGE_CHILDREN;
+	error = getrusage(p, &ga);
+	if (error)
+		return error;
+
+	if ((error = copyin(ru, &r, sizeof r)) != 0)
+		return error;
+
+	tms.tms_cutime = timeval_to_clock_t(&r.ru_utime);
+	tms.tms_cstime = timeval_to_clock_t(&r.ru_stime);
+
+	microtime(&t);
+	*retval = timeval_to_clock_t(&t);
+
+	return copyout(&tms, SCARG(uap, tp), sizeof(tms));
+}
+
+
+int
+svr4_sys_ulimit(p, uap)
+	struct proc *p;
+	struct svr4_sys_ulimit_args *uap;
+{
+        int *retval = p->p_retval;
+
+	switch (SCARG(uap, cmd)) {
+	case SVR4_GFILLIM:
+		*retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur / 512;
+		if (*retval == -1)
+			*retval = 0x7fffffff;
+		return 0;
+
+	case SVR4_SFILLIM:
+		{
+			int error;
+			struct __setrlimit_args srl;
+			struct rlimit krl;
+			caddr_t sg = stackgap_init();
+			struct rlimit *url = (struct rlimit *) 
+				stackgap_alloc(&sg, sizeof *url);
+
+			krl.rlim_cur = SCARG(uap, newlimit) * 512;
+			krl.rlim_max = p->p_rlimit[RLIMIT_FSIZE].rlim_max;
+
+			error = copyout(&krl, url, sizeof(*url));
+			if (error)
+				return error;
+
+			SCARG(&srl, which) = RLIMIT_FSIZE;
+			SCARG(&srl, rlp) = (struct orlimit *)url;
+
+			error = setrlimit(p, &srl);
+			if (error)
+				return error;
+
+			*retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur;
+			if (*retval == -1)
+				*retval = 0x7fffffff;
+			return 0;
+		}
+
+	case SVR4_GMEMLIM:
+		{
+			struct vmspace *vm = p->p_vmspace;
+			register_t r = p->p_rlimit[RLIMIT_DATA].rlim_cur;
+
+			if (r == -1)
+				r = 0x7fffffff;
+			r += (long) vm->vm_daddr;
+			if (r < 0)
+				r = 0x7fffffff;
+			*retval = r;
+			return 0;
+		}
+
+	case SVR4_GDESLIM:
+		*retval = p->p_rlimit[RLIMIT_NOFILE].rlim_cur;
+		if (*retval == -1)
+			*retval = 0x7fffffff;
+		return 0;
+
+	default:
+		return EINVAL;
+	}
+}
+
+static struct proc *
+svr4_pfind(pid)
+	pid_t pid;
+{
+	struct proc *p;
+
+	/* look in the live processes */
+	if ((p = pfind(pid)) != NULL)
+		return p;
+
+	/* look in the zombies */
+	for (p = zombproc.lh_first; p != 0; p = p->p_list.le_next)
+		if (p->p_pid == pid)
+			return p;
+
+	return NULL;
+}
+
+
+int
+svr4_sys_pgrpsys(p, uap)
+	struct proc *p;
+	struct svr4_sys_pgrpsys_args *uap;
+{
+        int *retval = p->p_retval;
+
+	switch (SCARG(uap, cmd)) {
+	case 1:			/* setpgrp() */
+		/*
+		 * SVR4 setpgrp() (which takes no arguments) has the
+		 * semantics that the session ID is also created anew, so
+		 * in almost every sense, setpgrp() is identical to
+		 * setsid() for SVR4.  (Under BSD, the difference is that
+		 * a setpgid(0,0) will not create a new session.)
+		 */
+		setsid(p, NULL);
+		/*FALLTHROUGH*/
+
+	case 0:			/* getpgrp() */
+		*retval = p->p_pgrp->pg_id;
+		return 0;
+
+	case 2:			/* getsid(pid) */
+		if (SCARG(uap, pid) != 0 &&
+		    (p = svr4_pfind(SCARG(uap, pid))) == NULL)
+			return ESRCH;
+		/*
+		 * This has already been initialized to the pid of
+		 * the session leader.
+		 */
+		*retval = (register_t) p->p_session->s_leader->p_pid;
+		return 0;
+
+	case 3:			/* setsid() */
+		return setsid(p, NULL);
+
+	case 4:			/* getpgid(pid) */
+
+		if (SCARG(uap, pid) != 0 &&
+		    (p = svr4_pfind(SCARG(uap, pid))) == NULL)
+			return ESRCH;
+
+		*retval = (int) p->p_pgrp->pg_id;
+		return 0;
+
+	case 5:			/* setpgid(pid, pgid); */
+		{
+			struct setpgid_args sa;
+
+			SCARG(&sa, pid) = SCARG(uap, pid);
+			SCARG(&sa, pgid) = SCARG(uap, pgid);
+			return setpgid(p, &sa);
+		}
+
+	default:
+		return EINVAL;
+	}
+}
+
+#define syscallarg(x)   union { x datum; register_t pad; }
+
+struct svr4_hrtcntl_args {
+	int 			cmd;
+	int 			fun;
+	int 			clk;
+	svr4_hrt_interval_t *	iv;
+	svr4_hrt_time_t *	ti;
+};
+
+
+static int
+svr4_hrtcntl(p, uap, retval)
+	struct proc *p;
+	struct svr4_hrtcntl_args *uap;
+	register_t *retval;
+{
+	switch (SCARG(uap, fun)) {
+	case SVR4_HRT_CNTL_RES:
+		DPRINTF(("htrcntl(RES)\n"));
+		*retval = SVR4_HRT_USEC;
+		return 0;
+
+	case SVR4_HRT_CNTL_TOFD:
+		DPRINTF(("htrcntl(TOFD)\n"));
+		{
+			struct timeval tv;
+			svr4_hrt_time_t t;
+			if (SCARG(uap, clk) != SVR4_HRT_CLK_STD) {
+				DPRINTF(("clk == %d\n", SCARG(uap, clk)));
+				return EINVAL;
+			}
+			if (SCARG(uap, ti) == NULL) {
+				DPRINTF(("ti NULL\n"));
+				return EINVAL;
+			}
+			microtime(&tv);
+			t.h_sec = tv.tv_sec;
+			t.h_rem = tv.tv_usec;
+			t.h_res = SVR4_HRT_USEC;
+			return copyout(&t, SCARG(uap, ti), sizeof(t));
+		}
+
+	case SVR4_HRT_CNTL_START:
+		DPRINTF(("htrcntl(START)\n"));
+		return ENOSYS;
+
+	case SVR4_HRT_CNTL_GET:
+		DPRINTF(("htrcntl(GET)\n"));
+		return ENOSYS;
+	default:
+		DPRINTF(("Bad htrcntl command %d\n", SCARG(uap, fun)));
+		return ENOSYS;
+	}
+}
+
+
+int
+svr4_sys_hrtsys(p, uap) 
+	struct proc *p;
+	struct svr4_sys_hrtsys_args *uap;
+{
+        int *retval = p->p_retval;
+
+	switch (SCARG(uap, cmd)) {
+	case SVR4_HRT_CNTL:
+		return svr4_hrtcntl(p, (struct svr4_hrtcntl_args *) uap,
+				    retval);
+
+	case SVR4_HRT_ALRM:
+		DPRINTF(("hrtalarm\n"));
+		return ENOSYS;
+
+	case SVR4_HRT_SLP:
+		DPRINTF(("hrtsleep\n"));
+		return ENOSYS;
+
+	case SVR4_HRT_CAN:
+		DPRINTF(("hrtcancel\n"));
+		return ENOSYS;
+
+	default:
+		DPRINTF(("Bad hrtsys command %d\n", SCARG(uap, cmd)));
+		return EINVAL;
+	}
+}
+
+
+static int
+svr4_setinfo(p, st, s)
+	struct proc *p;
+	int st;
+	svr4_siginfo_t *s;
+{
+	svr4_siginfo_t i;
+	int sig;
+
+	memset(&i, 0, sizeof(i));
+
+	i.si_signo = SVR4_SIGCHLD;
+	i.si_errno = 0;	/* XXX? */
+
+	if (p) {
+		i.si_pid = p->p_pid;
+		if (p->p_stat == SZOMB) {
+			i.si_stime = p->p_ru->ru_stime.tv_sec;
+			i.si_utime = p->p_ru->ru_utime.tv_sec;
+		}
+		else {
+			i.si_stime = p->p_stats->p_ru.ru_stime.tv_sec;
+			i.si_utime = p->p_stats->p_ru.ru_utime.tv_sec;
+		}
+	}
+
+	if (WIFEXITED(st)) {
+		i.si_status = WEXITSTATUS(st);
+		i.si_code = SVR4_CLD_EXITED;
+	} else if (WIFSTOPPED(st)) {
+		sig = WSTOPSIG(st);
+		if (sig >= 0 && sig < NSIG)
+			i.si_status = bsd_to_svr4_sig[sig];
+
+		if (i.si_status == SVR4_SIGCONT)
+			i.si_code = SVR4_CLD_CONTINUED;
+		else
+			i.si_code = SVR4_CLD_STOPPED;
+	} else {
+		sig = WTERMSIG(st);
+		if (sig >= 0 && sig < NSIG)
+			i.si_status = bsd_to_svr4_sig[sig];
+
+		if (WCOREDUMP(st))
+			i.si_code = SVR4_CLD_DUMPED;
+		else
+			i.si_code = SVR4_CLD_KILLED;
+	}
+
+	DPRINTF(("siginfo [pid %ld signo %d code %d errno %d status %d]\n",
+		 i.si_pid, i.si_signo, i.si_code, i.si_errno, i.si_status));
+
+	return copyout(&i, s, sizeof(i));
+}
+
+
+int
+svr4_sys_waitsys(p, uap)
+	struct proc *p;
+	struct svr4_sys_waitsys_args *uap;
+{
+	int nfound;
+	int error, *retval = p->p_retval;
+	struct proc *q, *t;
+
+
+	switch (SCARG(uap, grp)) {
+	case SVR4_P_PID:	
+		break;
+
+	case SVR4_P_PGID:
+		SCARG(uap, id) = -p->p_pgid;
+		break;
+
+	case SVR4_P_ALL:
+		SCARG(uap, id) = WAIT_ANY;
+		break;
+
+	default:
+		return EINVAL;
+	}
+
+	DPRINTF(("waitsys(%d, %d, %p, %x)\n", 
+	         SCARG(uap, grp), SCARG(uap, id),
+		 SCARG(uap, info), SCARG(uap, options)));
+
+loop:
+	nfound = 0;
+	for (q = p->p_children.lh_first; q != 0; q = q->p_sibling.le_next) {
+		if (SCARG(uap, id) != WAIT_ANY &&
+		    q->p_pid != SCARG(uap, id) &&
+		    q->p_pgid != -SCARG(uap, id)) {
+			DPRINTF(("pid %d pgid %d != %d\n", q->p_pid,
+				 q->p_pgid, SCARG(uap, id)));
+			continue;
+		}
+		nfound++;
+		if (q->p_stat == SZOMB && 
+		    ((SCARG(uap, options) & (SVR4_WEXITED|SVR4_WTRAPPED)))) {
+			*retval = 0;
+			DPRINTF(("found %d\n", q->p_pid));
+			if ((error = svr4_setinfo(q, q->p_xstat,
+						  SCARG(uap, info))) != 0)
+				return error;
+
+
+		        if ((SCARG(uap, options) & SVR4_WNOWAIT)) {
+				DPRINTF(("Don't wait\n"));
+				return 0;
+			}
+
+			/*
+			 * If we got the child via ptrace(2) or procfs, and
+			 * the parent is different (meaning the process was
+			 * attached, rather than run as a child), then we need
+			 * to give it back to the ol dparent, and send the
+			 * parent a SIGCHLD.  The rest of the cleanup will be
+			 * done when the old parent waits on the child.
+			 */
+			if ((q->p_flag & P_TRACED) &&
+			    q->p_oppid != q->p_pptr->p_pid) {
+				t = pfind(q->p_oppid);
+				proc_reparent(q, t ? t : initproc);
+				q->p_oppid = 0;
+				q->p_flag &= ~(P_TRACED | P_WAITED);
+				wakeup((caddr_t)q->p_pptr);
+				return 0;
+			}
+			q->p_xstat = 0;
+			ruadd(&p->p_stats->p_cru, q->p_ru);
+
+			FREE(q->p_ru, M_ZOMBIE);
+
+			/*
+			 * Finally finished with old proc entry.
+			 * Unlink it from its process group and free it.
+			 */
+			leavepgrp(q);
+
+			LIST_REMOVE(q, p_list); /* off zombproc */
+
+			LIST_REMOVE(q, p_sibling);
+
+			/*
+			 * Decrement the count of procs running with this uid.
+			 */
+			(void)chgproccnt(q->p_cred->p_ruid, -1);
+
+			/*
+			 * Free up credentials.
+			 */
+			if (--q->p_cred->p_refcnt == 0) {
+				crfree(q->p_cred->pc_ucred);
+				FREE(q->p_cred, M_SUBPROC);
+			}
+
+			/*
+			 * Release reference to text vnode
+			 */
+			if (q->p_textvp)
+				vrele(q->p_textvp);
+
+			/*
+			 * Give machine-dependent layer a chance
+			 * to free anything that cpu_exit couldn't
+			 * release while still running in process context.
+			 */
+			cpu_wait(q);
+#if defined(__NetBSD__)
+			pool_put(&proc_pool, q);
+#endif
+			nprocs--;
+			return 0;
+		}
+		if (q->p_stat == SSTOP && (q->p_flag & P_WAITED) == 0 &&
+		    (q->p_flag & P_TRACED ||
+		     (SCARG(uap, options) & (SVR4_WSTOPPED|SVR4_WCONTINUED)))) {
+			DPRINTF(("jobcontrol %d\n", q->p_pid));
+		        if (((SCARG(uap, options) & SVR4_WNOWAIT)) == 0)
+				q->p_flag |= P_WAITED;
+			*retval = 0;
+			return svr4_setinfo(q, W_STOPCODE(q->p_xstat),
+					    SCARG(uap, info));
+		}
+	}
+
+	if (nfound == 0)
+		return ECHILD;
+
+	if (SCARG(uap, options) & SVR4_WNOHANG) {
+		*retval = 0;
+		if ((error = svr4_setinfo(NULL, 0, SCARG(uap, info))) != 0)
+			return error;
+		return 0;
+	}
+
+	if ((error = tsleep((caddr_t)p, PWAIT | PCATCH, "svr4_wait", 0)) != 0)
+		return error;
+	goto loop;
+}
+
+
+static void
+bsd_statfs_to_svr4_statvfs(bfs, sfs)
+	const struct statfs *bfs;
+	struct svr4_statvfs *sfs;
+{
+	sfs->f_bsize = bfs->f_iosize; /* XXX */
+	sfs->f_frsize = bfs->f_bsize;
+	sfs->f_blocks = bfs->f_blocks;
+	sfs->f_bfree = bfs->f_bfree;
+	sfs->f_bavail = bfs->f_bavail;
+	sfs->f_files = bfs->f_files;
+	sfs->f_ffree = bfs->f_ffree;
+	sfs->f_favail = bfs->f_ffree;
+	sfs->f_fsid = bfs->f_fsid.val[0];
+	memcpy(sfs->f_basetype, bfs->f_fstypename, sizeof(sfs->f_basetype));
+	sfs->f_flag = 0;
+	if (bfs->f_flags & MNT_RDONLY)
+		sfs->f_flag |= SVR4_ST_RDONLY;
+	if (bfs->f_flags & MNT_NOSUID)
+		sfs->f_flag |= SVR4_ST_NOSUID;
+	sfs->f_namemax = MAXNAMLEN;
+	memcpy(sfs->f_fstr, bfs->f_fstypename, sizeof(sfs->f_fstr)); /* XXX */
+	memset(sfs->f_filler, 0, sizeof(sfs->f_filler));
+}
+
+
+static void
+bsd_statfs_to_svr4_statvfs64(bfs, sfs)
+	const struct statfs *bfs;
+	struct svr4_statvfs64 *sfs;
+{
+	sfs->f_bsize = bfs->f_iosize; /* XXX */
+	sfs->f_frsize = bfs->f_bsize;
+	sfs->f_blocks = bfs->f_blocks;
+	sfs->f_bfree = bfs->f_bfree;
+	sfs->f_bavail = bfs->f_bavail;
+	sfs->f_files = bfs->f_files;
+	sfs->f_ffree = bfs->f_ffree;
+	sfs->f_favail = bfs->f_ffree;
+	sfs->f_fsid = bfs->f_fsid.val[0];
+	memcpy(sfs->f_basetype, bfs->f_fstypename, sizeof(sfs->f_basetype));
+	sfs->f_flag = 0;
+	if (bfs->f_flags & MNT_RDONLY)
+		sfs->f_flag |= SVR4_ST_RDONLY;
+	if (bfs->f_flags & MNT_NOSUID)
+		sfs->f_flag |= SVR4_ST_NOSUID;
+	sfs->f_namemax = MAXNAMLEN;
+	memcpy(sfs->f_fstr, bfs->f_fstypename, sizeof(sfs->f_fstr)); /* XXX */
+	memset(sfs->f_filler, 0, sizeof(sfs->f_filler));
+}
+
+
+int
+svr4_sys_statvfs(p, uap)
+	struct proc *p;
+	struct svr4_sys_statvfs_args *uap;
+{
+	struct statfs_args	fs_args;
+	caddr_t sg = stackgap_init();
+	struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
+	struct statfs bfs;
+	struct svr4_statvfs sfs;
+	int error;
+
+	CHECKALTEXIST(p, &sg, SCARG(uap, path));
+	SCARG(&fs_args, path) = SCARG(uap, path);
+	SCARG(&fs_args, buf) = fs;
+
+	if ((error = statfs(p, &fs_args)) != 0)
+		return error;
+
+	if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
+		return error;
+
+	bsd_statfs_to_svr4_statvfs(&bfs, &sfs);
+
+	return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
+}
+
+
+int
+svr4_sys_fstatvfs(p, uap)
+	struct proc *p;
+	struct svr4_sys_fstatvfs_args *uap;
+{
+	struct fstatfs_args	fs_args;
+	caddr_t sg = stackgap_init();
+	struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
+	struct statfs bfs;
+	struct svr4_statvfs sfs;
+	int error;
+
+	SCARG(&fs_args, fd) = SCARG(uap, fd);
+	SCARG(&fs_args, buf) = fs;
+
+	if ((error = fstatfs(p, &fs_args)) != 0)
+		return error;
+
+	if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
+		return error;
+
+	bsd_statfs_to_svr4_statvfs(&bfs, &sfs);
+
+	return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
+}
+
+
+int
+svr4_sys_statvfs64(p, uap)
+	struct proc *p;
+	struct svr4_sys_statvfs64_args *uap;
+{
+	struct statfs_args	fs_args;
+	caddr_t sg = stackgap_init();
+	struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
+	struct statfs bfs;
+	struct svr4_statvfs64 sfs;
+	int error;
+
+	CHECKALTEXIST(p, &sg, SCARG(uap, path));
+	SCARG(&fs_args, path) = SCARG(uap, path);
+	SCARG(&fs_args, buf) = fs;
+
+	if ((error = statfs(p, &fs_args)) != 0)
+		return error;
+
+	if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
+		return error;
+
+	bsd_statfs_to_svr4_statvfs64(&bfs, &sfs);
+
+	return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
+}
+
+
+int
+svr4_sys_fstatvfs64(p, uap) 
+	struct proc *p;
+	struct svr4_sys_fstatvfs64_args *uap;
+{
+	struct fstatfs_args	fs_args;
+	caddr_t sg = stackgap_init();
+	struct statfs *fs = stackgap_alloc(&sg, sizeof(struct statfs));
+	struct statfs bfs;
+	struct svr4_statvfs64 sfs;
+	int error;
+
+	SCARG(&fs_args, fd) = SCARG(uap, fd);
+	SCARG(&fs_args, buf) = fs;
+
+	if ((error = fstatfs(p, &fs_args)) != 0)
+		return error;
+
+	if ((error = copyin(fs, &bfs, sizeof(bfs))) != 0)
+		return error;
+
+	bsd_statfs_to_svr4_statvfs64(&bfs, &sfs);
+
+	return copyout(&sfs, SCARG(uap, fs), sizeof(sfs));
+}
+
+int
+svr4_sys_alarm(p, uap)
+	struct proc *p;
+	struct svr4_sys_alarm_args *uap;
+{
+	int error;
+        struct itimerval *itp, *oitp;
+	struct setitimer_args sa;
+	caddr_t sg = stackgap_init();
+
+        itp = stackgap_alloc(&sg, sizeof(*itp));
+	oitp = stackgap_alloc(&sg, sizeof(*oitp));
+        timevalclear(&itp->it_interval);
+        itp->it_value.tv_sec = SCARG(uap, sec);
+        itp->it_value.tv_usec = 0;
+
+	SCARG(&sa, which) = ITIMER_REAL;
+	SCARG(&sa, itv) = itp;
+	SCARG(&sa, oitv) = oitp;
+        error = setitimer(p, &sa);
+	if (error)
+		return error;
+        if (oitp->it_value.tv_usec)
+                oitp->it_value.tv_sec++;
+        p->p_retval[0] = oitp->it_value.tv_sec;
+        return 0;
+
+}
+
+int
+svr4_sys_gettimeofday(p, uap)
+	struct proc *p;
+	struct svr4_sys_gettimeofday_args *uap;
+{
+	if (SCARG(uap, tp)) {
+		struct timeval atv;
+
+		microtime(&atv);
+		return copyout(&atv, SCARG(uap, tp), sizeof (atv));
+	}
+
+	return 0;
+}
+
+int
+svr4_sys_facl(p, uap)
+	struct proc *p;
+	struct svr4_sys_facl_args *uap;
+{
+	int *retval;
+
+	retval = p->p_retval;
+	*retval = 0;
+
+	switch (SCARG(uap, cmd)) {
+	case SVR4_SYS_SETACL:
+		/* We don't support acls on any filesystem */
+		return ENOSYS;
+
+	case SVR4_SYS_GETACL:
+		return copyout(retval, &SCARG(uap, num),
+		    sizeof(SCARG(uap, num)));
+
+	case SVR4_SYS_GETACLCNT:
+		return 0;
+
+	default:
+		return EINVAL;
+	}
+}
+
+
+int
+svr4_sys_acl(p, uap)
+	struct proc *p;
+	struct svr4_sys_acl_args *uap;
+{
+	/* XXX: for now the same */
+	return svr4_sys_facl(p, (struct svr4_sys_facl_args *)uap);
+}
+
+int
+svr4_sys_auditsys(p, uap)
+	struct proc *p;
+	struct svr4_sys_auditsys_args *uap;
+{
+	/*
+	 * XXX: Big brother is *not* watching.
+	 */
+	return 0;
+}
+
+int
+svr4_sys_memcntl(p, uap)
+	struct proc *p;
+	struct svr4_sys_memcntl_args *uap;
+{
+	switch (SCARG(uap, cmd)) {
+	case SVR4_MC_SYNC:
+		{
+			struct msync_args msa;
+
+			SCARG(&msa, addr) = SCARG(uap, addr);
+			SCARG(&msa, len) = SCARG(uap, len);
+			SCARG(&msa, flags) = (int)SCARG(uap, arg);
+
+			return msync(p, &msa);
+		}
+	case SVR4_MC_ADVISE:
+		{
+			struct madvise_args maa;
+
+			SCARG(&maa, addr) = SCARG(uap, addr);
+			SCARG(&maa, len) = SCARG(uap, len);
+			SCARG(&maa, behav) = (int)SCARG(uap, arg);
+
+			return madvise(p, &maa);
+		}
+	case SVR4_MC_LOCK:
+	case SVR4_MC_UNLOCK:
+	case SVR4_MC_LOCKAS:
+	case SVR4_MC_UNLOCKAS:
+		return EOPNOTSUPP;
+	default:
+		return ENOSYS;
+	}
+}
+
+
+int
+svr4_sys_nice(p, uap)
+	struct proc *p;
+	struct svr4_sys_nice_args *uap;
+{
+	struct setpriority_args ap;
+	int error;
+
+	SCARG(&ap, which) = PRIO_PROCESS;
+	SCARG(&ap, who) = 0;
+	SCARG(&ap, prio) = SCARG(uap, prio);
+
+	if ((error = setpriority(p, &ap)) != 0)
+		return error;
+
+	/* the cast is stupid, but the structures are the same */
+	if ((error = getpriority(p, (struct getpriority_args *)&ap)) != 0)
+		return error;
+
+	return 0;
+}
+
+int
+svr4_sys_resolvepath(p, uap)
+	struct proc *p;
+	struct svr4_sys_resolvepath_args *uap;
+{
+	struct nameidata nd;
+	int error, *retval = p->p_retval;
+
+	NDINIT(&nd, LOOKUP, NOFOLLOW | SAVENAME, UIO_USERSPACE,
+	    SCARG(uap, path), p);
+
+	if ((error = namei(&nd)) != 0)
+		return error;
+
+	if ((error = copyout(nd.ni_cnd.cn_pnbuf, SCARG(uap, buf),
+	    SCARG(uap, bufsiz))) != 0)
+		goto bad;
+
+	*retval = strlen(nd.ni_cnd.cn_pnbuf) < SCARG(uap, bufsiz) ? 
+	  strlen(nd.ni_cnd.cn_pnbuf) + 1 : SCARG(uap, bufsiz);
+bad:
+	vput(nd.ni_vp);
+	zfree(namei_zone, nd.ni_cnd.cn_pnbuf);
+	return error;
+}