From c2815ad564f29ace8944b8dd302e870e2e005aa8 Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Wed, 4 Jul 2007 22:57:21 +0000
Subject: [PATCH] Add freebsd6_ wrappers for
 mmap/lseek/pread/pwrite/truncate/ftruncate

Approved by: re (kensmith)
---
 sys/kern/sys_generic.c  | 28 ++++++++++++++++++++++++++++
 sys/kern/vfs_syscalls.c | 39 ++++++++++++++++++++++++++++++++++++---
 sys/vm/vm_mmap.c        | 14 ++++++++++++++
 3 files changed, 78 insertions(+), 3 deletions(-)

diff --git a/sys/kern/sys_generic.c b/sys/kern/sys_generic.c
index 992d181f008..16bd19509cc 100644
--- a/sys/kern/sys_generic.c
+++ b/sys/kern/sys_generic.c
@@ -142,6 +142,20 @@ pread(td, uap)
 	return(error);
 }
 
+int
+freebsd6_pread(td, uap)
+	struct thread *td;
+	struct freebsd6_pread_args *uap;
+{
+	struct pread_args oargs;
+
+	oargs.fd = uap->fd;
+	oargs.buf = uap->buf;
+	oargs.nbyte = uap->nbyte;
+	oargs.offset = uap->offset;
+	return (pread(td, &oargs));
+}
+
 /*
  * Scatter read system call.
  */
@@ -337,6 +351,20 @@ pwrite(td, uap)
 	return(error);
 }
 
+int
+freebsd6_pwrite(td, uap)
+	struct thread *td;
+	struct freebsd6_pwrite_args *uap;
+{
+	struct pwrite_args oargs;
+
+	oargs.fd = uap->fd;
+	oargs.buf = uap->buf;
+	oargs.nbyte = uap->nbyte;
+	oargs.offset = uap->offset;
+	return (pwrite(td, &oargs));
+}
+
 /*
  * Gather write system call.
  */
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c
index d73c4a2188a..819a74c73a8 100644
--- a/sys/kern/vfs_syscalls.c
+++ b/sys/kern/vfs_syscalls.c
@@ -1785,16 +1785,28 @@ olseek(td, uap)
 		off_t offset;
 		int whence;
 	} */ nuap;
-	int error;
 
 	nuap.fd = uap->fd;
 	nuap.offset = uap->offset;
 	nuap.whence = uap->whence;
-	error = lseek(td, &nuap);
-	return (error);
+	return (lseek(td, &nuap));
 }
 #endif /* COMPAT_43 */
 
+/* Version with the 'pad' argument */
+int
+freebsd6_lseek(td, uap)
+	struct thread *td;
+	register struct freebsd6_lseek_args *uap;
+{
+	struct lseek_args ouap;
+
+	ouap.fd = uap->fd;
+	ouap.offset = uap->offset;
+	ouap.whence = uap->whence;
+	return (lseek(td, &ouap));
+}
+
 /*
  * Check access permissions using passed credentials.
  */
@@ -3150,6 +3162,27 @@ oftruncate(td, uap)
 }
 #endif /* COMPAT_43 */
 
+/* Versions with the pad argument */
+int
+freebsd6_truncate(struct thread *td, struct freebsd6_truncate_args *uap)
+{
+	struct truncate_args ouap;
+
+	ouap.path = uap->path;
+	ouap.length = uap->length;
+	return (truncate(td, &ouap));
+}
+
+int
+freebsd6_ftruncate(struct thread *td, struct freebsd6_ftruncate_args *uap)
+{
+	struct ftruncate_args ouap;
+
+	ouap.fd = uap->fd;
+	ouap.length = uap->length;
+	return (ftruncate(td, &ouap));
+}
+
 /*
  * Sync an open file.
  */
diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c
index b91b82287f1..87441560e00 100644
--- a/sys/vm/vm_mmap.c
+++ b/sys/vm/vm_mmap.c
@@ -392,6 +392,20 @@ done:
 	return (error);
 }
 
+int
+freebsd6_mmap(struct thread *td, struct freebsd6_mmap_args *uap)
+{
+	struct mmap_args oargs;
+
+	oargs.addr = uap->addr;
+	oargs.len = uap->len;
+	oargs.prot = uap->prot;
+	oargs.flags = uap->flags;
+	oargs.fd = uap->fd;
+	oargs.pos = uap->pos;
+	return (mmap(td, &oargs));
+}
+
 #ifdef COMPAT_43
 #ifndef _SYS_SYSPROTO_H_
 struct ommap_args {