minix/man/man2/svrctl.2

44 lines
1.2 KiB
Groff
Raw Normal View History

2005-05-02 15:01:42 +02:00
.\" svrctl.2
.\"
.\" Created: July, 1994 by Philip Homburg <philip@cs.vu.nl>
.TH svrctl 2
.SH NAME
svrctl \- special server control functions
.SH SYNOPSIS
.nf
.ft B
#include <sys/svrctl.h>
int svrctl(u32_t \fIrequest\fP, void *\fIdata\fP);
.ft R
.fi
.SH DESCRIPTION
.B Svrctl
implements some very MINIX 3 specific system calls that don't deserve their own
system call number.
2005-05-02 15:01:42 +02:00
.PP
This system call makes it easy to add new ways of setting and getting system
2005-05-02 15:01:42 +02:00
parameters, but at the same time, backwards compatibility is not guaranteed.
Read the <sys/svrctl.h> include file to see what the structures mentioned below
2005-05-02 15:01:42 +02:00
look like. Most calls are root-only, unless specified otherwise.
.PP
The only way to know how to properly use these calls is to study the
associated server code, or the programs that already use these
2005-05-02 15:01:42 +02:00
calls.
.PP
Current requests are:
.TP 5
.B MMGETPARAM
Request the value of one or all boot parameters. Can be used by non-root.
2005-05-02 15:01:42 +02:00
.TP
.B MMSETPARAM
Set an override for a value of a boot parameter. Can be used by non-root.
2005-05-02 15:01:42 +02:00
.TP
.B FSSIGNON
Register a new device with FS.
.SH "RETURN VALUES"
.B Svrctl
returns 0 upon success and -1 upon failure.
.SH AUTHOR
Philip Homburg <philip@cs.vu.nl>