freebsd-dev/sys/i386/ibcs2/ibcs2_sysi86.c
John Baldwin 44731cab3b Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00

96 lines
3.1 KiB
C

/*-
* Copyright (c) 1994 Søren Schmidt
* Copyright (c) 1995 Steven Wallace
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <i386/ibcs2/ibcs2_types.h>
#include <i386/ibcs2/ibcs2_signal.h>
#include <i386/ibcs2/ibcs2_util.h>
#include <i386/ibcs2/ibcs2_proto.h>
#define IBCS2_FP_NO 0 /* no fp support */
#define IBCS2_FP_SW 1 /* software emulator */
#define IBCS2_FP_287 2 /* 80287 FPU */
#define IBCS2_FP_387 3 /* 80387 FPU */
#define SI86_FPHW 40
#define STIME 54
#define SETNAME 56
#define SI86_MEM 65
extern int hw_float;
int
ibcs2_sysi86(struct thread *td, struct ibcs2_sysi86_args *args)
{
switch (SCARG(args, cmd)) {
case SI86_FPHW: { /* Floating Point information */
int val, error;
if (hw_float) val = IBCS2_FP_387; /* FPU hardware */
else val = IBCS2_FP_SW; /* FPU emulator */
if ((error = copyout(&val, SCARG(args, arg), sizeof(val))) != 0)
return error;
return 0;
}
case STIME: /* set the system time given pointer to long */
/* gettimeofday; time.tv_sec = *args->arg; settimeofday */
return EINVAL;
case SETNAME: { /* set hostname given string w/ len <= 7 chars */
int name[2];
int error;
if ((error = suser(td)))
return (error);
name[0] = CTL_KERN;
name[1] = KERN_HOSTNAME;
return (userland_sysctl(td, name, 2, 0, 0, 0,
SCARG(args, arg), 7, 0));
}
case SI86_MEM: /* size of physical memory */
td->td_retval[0] = ctob(physmem);
return 0;
default:
#ifdef DIAGNOSTIC
printf("IBCS2: 'sysi86' function %d(0x%x) "
"not implemented yet\n", SCARG(args, cmd), args->cmd);
#endif
return EINVAL;
}
}