minix/man/man2/svrctl.2
Cristiano Giuffrida 65ef539739 Driver mapping refactory.
VFS CHANGES:
- dmap table no longer statically initialized in VFS
- Dropped FSSIGNON svrctl call no longer used by INET

INET CHANGES:
- INET announces its presence to VFS just like any other driver

RS CHANGES:
- The boot image dev table contains all the data to initialize VFS' dmap table
- RS interface supports asynchronous up and update operations now
- RS interface extended to support driver style and flags
2010-04-09 21:56:44 +00:00

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1.1 KiB
Groff

.\" 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.
.PP
This system call makes it easy to add new ways of setting and getting system
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
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
calls.
.PP
Current requests are:
.TP 5
.B MMGETPARAM
Request the value of one or all boot parameters. Can be used by non-root.
.TP
.B MMSETPARAM
Set an override for a value of a boot parameter. Can be used by non-root.
.SH "RETURN VALUES"
.B Svrctl
returns 0 upon success and -1 upon failure.
.SH AUTHOR
Philip Homburg <philip@cs.vu.nl>