freebsd-dev/sys/kern/kern_xxx.c
Julian Elischer b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00

315 lines
6.9 KiB
C

/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)kern_xxx.c 8.2 (Berkeley) 11/14/93
* $FreeBSD$
*/
#include "opt_compat.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/utsname.h>
#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
#ifndef _SYS_SYSPROTO_H_
struct gethostname_args {
char *hostname;
u_int len;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
ogethostname(td, uap)
struct thread *td;
struct gethostname_args *uap;
{
int name[2];
int error;
size_t len = uap->len;
name[0] = CTL_KERN;
name[1] = KERN_HOSTNAME;
mtx_lock(&Giant);
error = userland_sysctl(td, name, 2, uap->hostname, &len, 1, 0, 0, 0);
mtx_unlock(&Giant);
return(error);
}
#ifndef _SYS_SYSPROTO_H_
struct sethostname_args {
char *hostname;
u_int len;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
osethostname(td, uap)
struct thread *td;
register struct sethostname_args *uap;
{
int name[2];
int error;
name[0] = CTL_KERN;
name[1] = KERN_HOSTNAME;
mtx_lock(&Giant);
if ((error = suser_xxx(0, td->td_proc, PRISON_ROOT)) == 0) {
error = userland_sysctl(td, name, 2, 0, 0, 0,
uap->hostname, uap->len, 0);
}
mtx_unlock(&Giant);
return (error);
}
#ifndef _SYS_SYSPROTO_H_
struct ogethostid_args {
int dummy;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
ogethostid(td, uap)
struct thread *td;
struct ogethostid_args *uap;
{
*(long *)(td->td_retval) = hostid;
return (0);
}
#endif /* COMPAT_43 || COMPAT_SUNOS */
#ifdef COMPAT_43
#ifndef _SYS_SYSPROTO_H_
struct osethostid_args {
long hostid;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
osethostid(td, uap)
struct thread *td;
struct osethostid_args *uap;
{
int error;
mtx_lock(&Giant);
if ((error = suser_td(td)))
hostid = uap->hostid;
mtx_unlock(&Giant);
return (error);
}
/*
* MPSAFE
*/
int
oquota(td, uap)
struct thread *td;
struct oquota_args *uap;
{
return (ENOSYS);
}
#endif /* COMPAT_43 */
/*
* This is the FreeBSD-1.1 compatable uname(2) interface. These
* days it is done in libc as a wrapper around a bunch of sysctl's.
* This must maintain the old 1.1 binary ABI.
*/
#if SYS_NMLN != 32
#error "FreeBSD-1.1 uname syscall has been broken"
#endif
#ifndef _SYS_SYSPROTO_H_
struct uname_args {
struct utsname *name;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
uname(td, uap)
struct thread *td;
struct uname_args *uap;
{
int name[2], error;
size_t len;
char *s, *us;
name[0] = CTL_KERN;
name[1] = KERN_OSTYPE;
len = sizeof (uap->name->sysname);
mtx_lock(&Giant);
error = userland_sysctl(td, name, 2, uap->name->sysname, &len,
1, 0, 0, 0);
if (error)
goto done2;
subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
name[1] = KERN_HOSTNAME;
len = sizeof uap->name->nodename;
error = userland_sysctl(td, name, 2, uap->name->nodename, &len,
1, 0, 0, 0);
if (error)
goto done2;
subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
name[1] = KERN_OSRELEASE;
len = sizeof uap->name->release;
error = userland_sysctl(td, name, 2, uap->name->release, &len,
1, 0, 0, 0);
if (error)
goto done2;
subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
/*
name = KERN_VERSION;
len = sizeof uap->name->version;
error = userland_sysctl(td, name, 2, uap->name->version, &len,
1, 0, 0, 0);
if (error)
goto done2;
subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
*/
/*
* this stupid hackery to make the version field look like FreeBSD 1.1
*/
for(s = version; *s && *s != '#'; s++);
for(us = uap->name->version; *s && *s != ':'; s++) {
error = subyte( us++, *s);
if (error)
goto done2;
}
error = subyte( us++, 0);
if (error)
goto done2;
name[0] = CTL_HW;
name[1] = HW_MACHINE;
len = sizeof uap->name->machine;
error = userland_sysctl(td, name, 2, uap->name->machine, &len,
1, 0, 0, 0);
if (error)
goto done2;
subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
done2:
mtx_unlock(&Giant);
return (error);
}
#ifndef _SYS_SYSPROTO_H_
struct getdomainname_args {
char *domainname;
int len;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
getdomainname(td, uap)
struct thread *td;
struct getdomainname_args *uap;
{
int domainnamelen;
int error;
mtx_lock(&Giant);
domainnamelen = strlen(domainname) + 1;
if ((u_int)uap->len > domainnamelen + 1)
uap->len = domainnamelen + 1;
error = copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len);
mtx_unlock(&Giant);
return (error);
}
#ifndef _SYS_SYSPROTO_H_
struct setdomainname_args {
char *domainname;
int len;
};
#endif
/*
* MPSAFE
*/
/* ARGSUSED */
int
setdomainname(td, uap)
struct thread *td;
struct setdomainname_args *uap;
{
int error, domainnamelen;
mtx_lock(&Giant);
if ((error = suser_td(td)))
goto done2;
if ((u_int)uap->len > sizeof (domainname) - 1) {
error = EINVAL;
goto done2;
}
domainnamelen = uap->len;
error = copyin((caddr_t)uap->domainname, domainname, uap->len);
domainname[domainnamelen] = 0;
done2:
mtx_unlock(&Giant);
return (error);
}