/* $NetBSD: osf1_misc.c,v 1.87.8.1 2023/06/21 21:09:28 martin Exp $ */

/*
 * Copyright (c) 1999 Christopher G. Demetriou.  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 Christopher G. Demetriou
 *	for the NetBSD Project.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without 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.
 */

/*
 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: osf1_misc.c,v 1.87.8.1 2023/06/21 21:09:28 martin Exp $");

#if defined(_KERNEL_OPT)
#include "opt_syscall_debug.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/reboot.h>
#include <sys/syscallargs.h>
#include <sys/exec.h>
#include <sys/vnode.h>
#include <sys/socketvar.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/wait.h>

#include <machine/alpha.h>
#include <machine/cpuconf.h>
#include <machine/rpb.h>
#include <machine/fpu.h>

#include <compat/osf1/osf1.h>
#include <compat/osf1/osf1_syscallargs.h>
#include <compat/common/compat_util.h>
#include <compat/osf1/osf1_cvt.h>

int
osf1_sys_classcntl(struct lwp *l, const struct osf1_sys_classcntl_args *uap, register_t *retval)
{

	/* XXX */
	return (ENOSYS);
}

int
osf1_sys_reboot(struct lwp *l, const struct osf1_sys_reboot_args *uap, register_t *retval)
{
	struct sys_reboot_args a;
	unsigned long leftovers;

	/* translate opt */
	SCARG(&a, opt) = emul_flags_translate(osf1_reboot_opt_xtab,
	    SCARG(uap, opt), &leftovers);
	if (leftovers != 0)
		return (EINVAL);

	SCARG(&a, bootstr) = NULL;

	return sys_reboot(l, &a, retval);
}

int
osf1_sys_set_program_attributes(struct lwp *l, const struct osf1_sys_set_program_attributes_args *uap, register_t *retval)
{
	struct proc *p = l->l_proc;
	segsz_t tsize, dsize;

	tsize = btoc(SCARG(uap, tsize));
	dsize = btoc(SCARG(uap, dsize));

	if (dsize > p->p_rlimit[RLIMIT_DATA].rlim_cur)
		return (ENOMEM);
	if (tsize > MAXTSIZ)
		return (ENOMEM);

	/* XXXSMP unlocked */
	p->p_vmspace->vm_taddr = SCARG(uap, taddr);
	p->p_vmspace->vm_tsize = tsize;
	p->p_vmspace->vm_daddr = SCARG(uap, daddr);
	p->p_vmspace->vm_dsize = dsize;

	return (0);
}

int
osf1_sys_getsysinfo(struct lwp *l, const struct osf1_sys_getsysinfo_args *uap, register_t *retval)
{
	extern int ncpus;
	int error;
	int unit;
	long percpu;
	long proctype;
	u_int64_t fpflags;
	struct osf1_cpu_info cpuinfo;
	const void *data;
	size_t datalen;

	error = 0;

	switch(SCARG(uap, op))
	{
	case OSF_GET_MAX_UPROCS:
		data = &maxproc;
		datalen = sizeof(maxproc);
		break;
	case OSF_GET_PHYSMEM:
		data = &physmem;
		datalen = sizeof(physmem);
		break;
	case OSF_GET_MAX_CPU:
	case OSF_GET_CPUS_IN_BOX:
		data = &ncpus;
		datalen = sizeof(ncpus);
		break;
	case OSF_GET_IEEE_FP_CONTROL:
		if (((fpflags = alpha_read_fp_c(l)) & IEEE_INHERIT) != 0) {
			fpflags |= 1ULL << 63;
			fpflags &= ~IEEE_INHERIT;
		}
		data = &fpflags;
		datalen = sizeof(fpflags);
		break;
	case OSF_GET_CPU_INFO:
		memset(&cpuinfo, 0, sizeof(cpuinfo));
#ifdef __alpha__
		unit = alpha_pal_whami();
#else
		unit = 0; /* XXX */
#endif
		cpuinfo.current_cpu = unit;
		cpuinfo.cpus_in_box = ncpus;
		cpuinfo.cpu_type = LOCATE_PCS(hwrpb, unit)->pcs_proc_type;
		cpuinfo.ncpus = ncpus;
		cpuinfo.cpus_present = ncpus;
		cpuinfo.cpus_running = ncpus;
		cpuinfo.cpu_binding = 1;
		cpuinfo.cpu_ex_binding = 0;
		cpuinfo.mhz = hwrpb->rpb_cc_freq / 1000000;
		data = &cpuinfo;
		datalen = sizeof(cpuinfo);
		break;
	case OSF_GET_PROC_TYPE:
#ifdef __alpha__
		unit = alpha_pal_whami();
		proctype = LOCATE_PCS(hwrpb, unit)->pcs_proc_type;
#else
		proctype = 0;	/* XXX */
#endif
		data = &proctype;
		datalen = sizeof(percpu);
		break;
	case OSF_GET_HWRPB: /* note -- osf/1 doesn't have rpb_tbhint[8] */
		data = hwrpb;
		datalen = hwrpb->rpb_size;
		break;
	case OSF_GET_PLATFORM_NAME:
		data = platform.model;
		datalen = strlen(platform.model) + 1;
		break;
	default:
		printf("osf1_getsysinfo called with unknown op=%ld\n",
		       SCARG(uap, op));
		/* return EINVAL; */
		return 0;
	}

	if (SCARG(uap, nbytes) < datalen)
		return (EINVAL);
	error = copyout(data, SCARG(uap, buffer), datalen);
	if (!error)
		retval[0] = 1;
	return (error);
}

int
osf1_sys_setsysinfo(struct lwp *l, const struct osf1_sys_setsysinfo_args *uap, register_t *retval)
{
	u_int64_t temp;
	int error;

	error = 0;

	switch(SCARG(uap, op)) {
	case OSF_SET_IEEE_FP_CONTROL:

		if ((error = copyin(SCARG(uap, buffer), &temp, sizeof(temp))))
			break;
		if (temp >> 63 != 0)
			temp |= IEEE_INHERIT;
		alpha_write_fp_c(l, temp);
		break;
	default:
		uprintf("osf1_setsysinfo called with op=%ld\n", SCARG(uap, op));
		//error = EINVAL;
	}
	retval[0] = 0;
	return (error);
}

int
osf1_sys_sysinfo(struct lwp *l, const struct osf1_sys_sysinfo_args *uap, register_t *retval)
{
	const char *string;
	size_t slen;
	int error;

	error = 0;
	switch (SCARG(uap, cmd)) {
	case OSF1_SI_SYSNAME:
		string = ostype;
		break;

	case OSF1_SI_HOSTNAME:
		string = hostname;
		break;

	case OSF1_SI_RELEASE:
		string = osrelease;
		break;

	case OSF1_SI_VERSION:
		goto should_handle;

	case OSF1_SI_MACHINE:
		string = MACHINE;
		break;

	case OSF1_SI_ARCHITECTURE:
		string = MACHINE_ARCH;
		break;

	case OSF1_SI_HW_SERIAL:
		string = "666";			/* OSF/1 emulation?  YES! */
		break;

	case OSF1_SI_HW_PROVIDER:
		string = "unknown";
		break;

	case OSF1_SI_SRPC_DOMAIN:
		goto dont_care;

	case OSF1_SI_SET_HOSTNAME:
		goto should_handle;

	case OSF1_SI_SET_SYSNAME:
		goto should_handle;

	case OSF1_SI_SET_SRPC_DOMAIN:
		goto dont_care;

	default:
should_handle:
		printf("osf1_sys_sysinfo(%d, %p, 0x%lx)\n", SCARG(uap, cmd),
		    SCARG(uap, buf), SCARG(uap,len));
dont_care:
		return (EINVAL);
	};

	slen = strlen(string) + 1;
	if (SCARG(uap, buf)) {
		error = copyout(string, SCARG(uap, buf),
				min(slen, SCARG(uap, len)));
		if (!error && (SCARG(uap, len) > 0) && (SCARG(uap, len) < slen))
			subyte(SCARG(uap, buf) + SCARG(uap, len) - 1, 0);
	}
	if (!error)
		retval[0] = slen;

	return (error);
}

int
osf1_sys_uname(struct lwp *l, const struct osf1_sys_uname_args *uap, register_t *retval)
{
        struct osf1_utsname u;
        const char *cp;
        char *dp, *ep;

	memset(&u, 0, sizeof(u));
        strncpy(u.sysname, ostype, sizeof(u.sysname));
        strncpy(u.nodename, hostname, sizeof(u.nodename));
        strncpy(u.release, osrelease, sizeof(u.release));
        dp = u.version;
        ep = &u.version[sizeof(u.version) - 1];
        for (cp = version; *cp && *cp != '('; cp++)
                ;
        for (cp++; *cp && *cp != ')' && dp < ep; cp++)
                *dp++ = *cp;
        for (; *cp && *cp != '#'; cp++)
                ;
        for (; *cp && *cp != ':' && dp < ep; cp++)
                *dp++ = *cp;
        *dp = '\0';
        strncpy(u.machine, MACHINE, sizeof(u.machine));
        return (copyout((void *)&u, (void *)SCARG(uap, name), sizeof u));
}

int
osf1_sys_usleep_thread(struct lwp *l, const struct osf1_sys_usleep_thread_args *uap, register_t *retval)
{
	struct osf1_timeval otv, endotv;
	struct timeval tv, ntv, endtv;
	u_long ticks;
	int error;

	if ((error = copyin(SCARG(uap, sleep), &otv, sizeof otv)))
		return (error);
	tv.tv_sec = otv.tv_sec;
	tv.tv_usec = otv.tv_usec;

	ticks = howmany((u_long)tv.tv_sec * 1000000 + tv.tv_usec, tick);
	if (ticks == 0)
		ticks = 1;

	getmicrotime(&tv);

	tsleep(l, PUSER|PCATCH, "uslpthrd", ticks);	/* XXX */

	if (SCARG(uap, slept) != NULL) {
		getmicrotime(&ntv);
		timersub(&ntv, &tv, &endtv);
		if (endtv.tv_sec < 0 || endtv.tv_usec < 0)
			endtv.tv_sec = endtv.tv_usec = 0;

		memset(&endotv, 0, sizeof(endotv));
		endotv.tv_sec = endtv.tv_sec;
		endotv.tv_usec = endtv.tv_usec;
		error = copyout(&endotv, SCARG(uap, slept), sizeof endotv);
	}
	return (error);
}

int
osf1_sys_wait4(struct lwp *l, const struct osf1_sys_wait4_args *uap, register_t *retval)
{
	struct osf1_rusage osf1_rusage;
	struct rusage netbsd_rusage;
	unsigned long leftovers;
	int error, status;
	int options = SCARG(uap, options);
	int pid = SCARG(uap, pid);

	/* translate options */
	options = emul_flags_translate(osf1_wait_options_xtab,
	    options, &leftovers);
	if (leftovers != 0)
		return (EINVAL);

	error = do_sys_wait(&pid, &status, options,
	    SCARG(uap, rusage) != NULL ? &netbsd_rusage : NULL);

	retval[0] = pid;
	if (pid == 0)
		return error;

	if (SCARG(uap, rusage)) {
		osf1_cvt_rusage_from_native(&netbsd_rusage, &osf1_rusage);
		error = copyout(&osf1_rusage, SCARG(uap, rusage),
		    sizeof osf1_rusage);
	}

	if (error == 0 && SCARG(uap, status))
		error = copyout(&status, SCARG(uap, status), sizeof(status));

	return error;
}