| syscall.2 (108028) | syscall.2 (108087) |
|---|---|
| 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)syscall.2 8.1 (Berkeley) 6/16/93 | 1.\" Copyright (c) 1980, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)syscall.2 8.1 (Berkeley) 6/16/93 |
| 33.\" $FreeBSD: head/lib/libc/sys/syscall.2 108028 2002-12-18 09:22:32Z ru $ | 33.\" $FreeBSD: head/lib/libc/sys/syscall.2 108087 2002-12-19 09:40:28Z ru $ |
| 34.\" 35.Dd June 16, 1993 36.Dt SYSCALL 2 37.Os 38.Sh NAME 39.Nm syscall , 40.Nm __syscall 41.Nd indirect system call --- 13 unchanged lines hidden (view full) --- 55performs the system call whose assembly language 56interface has the specified 57.Fa number 58with the specified arguments. 59Symbolic constants for system calls can be found in the header file 60.Ao Pa sys/syscall.h Ac . 61The 62.Fn __syscall | 34.\" 35.Dd June 16, 1993 36.Dt SYSCALL 2 37.Os 38.Sh NAME 39.Nm syscall , 40.Nm __syscall 41.Nd indirect system call --- 13 unchanged lines hidden (view full) --- 55performs the system call whose assembly language 56interface has the specified 57.Fa number 58with the specified arguments. 59Symbolic constants for system calls can be found in the header file 60.Ao Pa sys/syscall.h Ac . 61The 62.Fn __syscall |
| 63form should be used when one or more of the parameters is a | 63form should be used when one or more of the arguments is a |
| 6464-bit argument to ensure that argument alignment is correct. 65This system call is useful for testing new system calls that 66do not have entries in the C library. 67.Sh RETURN VALUES 68The return values are defined by the system call being invoked. 69In general, a 0 return value indicates success. 70A -1 return value indicates an error, 71and an error code is stored in 72.Va errno . 73.Sh BUGS 74There is no way to simulate system calls that have multiple return values 75such as 76.Xr pipe 2 . 77.Sh HISTORY 78The 79.Fn syscall 80function appeared in 81.Bx 4.0 . | 6464-bit argument to ensure that argument alignment is correct. 65This system call is useful for testing new system calls that 66do not have entries in the C library. 67.Sh RETURN VALUES 68The return values are defined by the system call being invoked. 69In general, a 0 return value indicates success. 70A -1 return value indicates an error, 71and an error code is stored in 72.Va errno . 73.Sh BUGS 74There is no way to simulate system calls that have multiple return values 75such as 76.Xr pipe 2 . 77.Sh HISTORY 78The 79.Fn syscall 80function appeared in 81.Bx 4.0 . |