Added pread and pwrite. These functions are defined by the X/Open

Threads Extension.  (Note: We use the same syscall numbers as NetBSD.)

Submitted by:	John Plevyak <jplevyak@inktomi.com>

4 files changed, 20 insertions, 0 deletions

diff --git a/sys/sys/syscall-hide.h b/sys/sys/syscall-hide.h
index 814bfec..11b5b2c 100644
--- a/sys/sys/syscall-hide.h
+++ b/sys/sys/syscall-hide.h
@@ -158,6 +158,8 @@ HIDE_BSD(rtprio)
 HIDE_BSD(semsys)
 HIDE_BSD(msgsys)
 HIDE_BSD(shmsys)
+HIDE_POSIX(pread)
+HIDE_POSIX(pwrite)
 HIDE_BSD(ntp_adjtime)
 HIDE_POSIX(setgid)
 HIDE_BSD(setegid)
diff --git a/sys/sys/syscall.h b/sys/sys/syscall.h
index 464ea91..b4fcab9 100644
--- a/sys/sys/syscall.h
+++ b/sys/sys/syscall.h
@@ -166,6 +166,8 @@
 #define	SYS_semsys	169
 #define	SYS_msgsys	170
 #define	SYS_shmsys	171
+#define	SYS_pread	173
+#define	SYS_pwrite	174
 #define	SYS_ntp_adjtime	176
 #define	SYS_setgid	181
 #define	SYS_setegid	182
diff --git a/sys/sys/syscall.mk b/sys/sys/syscall.mk
index 581290a..9e7e23c 100644
--- a/sys/sys/syscall.mk
+++ b/sys/sys/syscall.mk
@@ -123,6 +123,8 @@ MIASM =  \
 	semsys.o \
 	msgsys.o \
 	shmsys.o \
+	pread.o \
+	pwrite.o \
 	ntp_adjtime.o \
 	setgid.o \
 	setegid.o \
diff --git a/sys/sys/sysproto.h b/sys/sys/sysproto.h
index 71f9492..7a7d1bc 100644
--- a/sys/sys/sysproto.h
+++ b/sys/sys/sysproto.h
@@ -542,6 +542,18 @@ struct	shmsys_args {
 	int	a3;	char a3_[PAD_(int)];
 	int	a4;	char a4_[PAD_(int)];
 };
+struct	pread_args {
+	int	fd;	char fd_[PAD_(int)];
+	void *	buf;	char buf_[PAD_(void *)];
+	size_t	nbyte;	char nbyte_[PAD_(size_t)];
+	off_t	offset;	char offset_[PAD_(off_t)];
+};
+struct	pwrite_args {
+	int	fd;	char fd_[PAD_(int)];
+	const void *	buf;	char buf_[PAD_(const void *)];
+	size_t	nbyte;	char nbyte_[PAD_(size_t)];
+	off_t	offset;	char offset_[PAD_(off_t)];
+};
 struct	ntp_adjtime_args {
 	struct timex *	tp;	char tp_[PAD_(struct timex *)];
 };
@@ -1014,6 +1026,8 @@ int	rtprio __P((struct proc *, struct rtprio_args *));
 int	semsys __P((struct proc *, struct semsys_args *));
 int	msgsys __P((struct proc *, struct msgsys_args *));
 int	shmsys __P((struct proc *, struct shmsys_args *));
+int	pread __P((struct proc *, struct pread_args *));
+int	pwrite __P((struct proc *, struct pwrite_args *));
 int	ntp_adjtime __P((struct proc *, struct ntp_adjtime_args *));
 int	setgid __P((struct proc *, struct setgid_args *));
 int	setegid __P((struct proc *, struct setegid_args *));