NetBSD/sys/compat/svr4_32/svr4_32_lwp.c

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2001-02-11 04:10:24 +03:00
/* $NetBSD: svr4_32_lwp.c,v 1.2 2001/02/11 01:10:24 eeh Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/queue.h>
#include <sys/mbuf.h>
#include <sys/file.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <sys/resourcevar.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/syscallargs.h>
#include <sys/un.h>
#include <sys/stat.h>
#include <compat/svr4_32/svr4_32_types.h>
#include <compat/svr4_32/svr4_32_util.h>
#include <compat/svr4_32/svr4_32_socket.h>
#include <compat/svr4_32/svr4_32_signal.h>
#include <compat/svr4/svr4_sockmod.h>
#include <compat/svr4_32/svr4_32_lwp.h>
#include <compat/svr4_32/svr4_32_ucontext.h>
#include <compat/svr4_32/svr4_32_syscallargs.h>
#if 0
int
svr4_32_sys__lwp_self(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
return sys_getpid(p, v, retval);
}
#endif
int
svr4_32_sys__lwp_create(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_create_args *uap = v;
int error;
struct proc *pt;
svr4_32_ucontext_t uc;
#define SVR4_FORK_FLAGS \
(FORK_SHAREVM|FORK_SHARECWD|FORK_SHAREFILES|FORK_SHARESIGS)
if ((error = fork1(p, SVR4_FORK_FLAGS, SIGCHLD, NULL, 0,
NULL, NULL, retval, &pt)) == -1)
return error;
if (SCARG(uap, flags) & SVR4_LWP_DETACHED)
pt->p_flag &= ~P_CONTROLT;
if (SCARG(uap, flags) & SVR4_LWP_SUSPENDED)
pt->p_stat = SSTOP;
if (SCARG(uap, flags) & SVR4___LWP_ASLWP) {
/*
* XXX: This does not really work, we don't have
* the facility to deliver all async signals
* to a single lwp, and also we don't keep
* track of having only one ASLWP. For now
* we just block all signals as we are supposed
* to.
*/
sigset_t ss;
sigfillset(&ss);
(void)sigprocmask1(pt, SIG_BLOCK, &ss, 0);
} else {
/*
* XXX: We block all signals to the rest of the of
* the lwp's, so that they don't get confused
* as of the above. Will that work? What does
* sharing s
*/
sigset_t ss;
sigfillset(&ss);
(void)sigprocmask1(pt, SIG_BLOCK, &ss, 0);
}
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if ((error = copyin((caddr_t)(u_long)SCARG(uap, uc), &uc, sizeof(uc))) != 0)
return error;
if ((error = svr4_32_setcontext(pt, &uc)) != 0)
return error;
if ((error = copyout(&pt->p_pid, (caddr_t)(u_long)SCARG(uap, lwpid),
sizeof(svr4_lwpid_t))) == -1)
return error;
return 0;
}
int
svr4_32_sys__lwp_kill(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_kill_args *uap = v;
struct sys_kill_args ap;
SCARG(&ap, pid) = SCARG(uap, lwpid);
SCARG(&ap, signum) = SCARG(uap, signum);
return sys_kill(p, &ap, retval);
}
int
svr4_32_sys__lwp_info(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_info_args *uap = v;
struct svr4_32_lwpinfo lwpinfo;
int error;
TIMEVAL_TO_TIMESPEC(&p->p_stats->p_ru.ru_stime, &lwpinfo.lwp_stime);
TIMEVAL_TO_TIMESPEC(&p->p_stats->p_ru.ru_utime, &lwpinfo.lwp_utime);
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if ((error = copyout(&lwpinfo, (caddr_t)(u_long)SCARG(uap, lwpinfo),
sizeof(lwpinfo))) == -1)
return error;
return 0;
}
int
svr4_32_sys__lwp_exit(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct sys_exit_args ap;
int error;
/* XXX: We don't handle the suspended case correctly here */
SCARG(&ap, rval) = 0;
if ((error = sys_exit(p, &ap, retval)) == -1)
return error;
*retval = 0;
return 0;
}
int
svr4_32_sys__lwp_wait(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_wait_args *uap = v;
struct sys_wait4_args ap;
int error;
SCARG(&ap, pid) = SCARG(uap, wait_for);
SCARG(&ap, status) = NULL;
SCARG(&ap, options) = 0;
if ((error = sys_wait4(p, &ap, retval)) == -1)
return error;
if (SCARG(uap, departed_lwp) != NULL)
if ((error = copyout(retval, (caddr_t)(u_long)SCARG(uap, departed_lwp),
sizeof(svr4_lwpid_t))) == -1)
return error;
*retval = 0;
return 0;
}
/* XXX Stolen from kern_sig.c */
#define CANSIGNAL(p, pc, q, signum) \
((pc)->pc_ucred->cr_uid == 0 || \
(pc)->p_ruid == (q)->p_cred->p_ruid || \
(pc)->pc_ucred->cr_uid == (q)->p_cred->p_ruid || \
(pc)->p_ruid == (q)->p_ucred->cr_uid || \
(pc)->pc_ucred->cr_uid == (q)->p_ucred->cr_uid || \
((signum) == SIGCONT && (q)->p_session == (p)->p_session))
int
svr4_32_sys__lwp_suspend(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_suspend_args *uap = v;
struct proc *pt;
/* Security implications here! */
if ((pt = pfind(SCARG(uap, lwpid))) == NULL)
return ESRCH;
if (!CANSIGNAL(p, p->p_cred, pt, 0))
return EPERM;
pt->p_stat = SSTOP;
return 0;
}
int
svr4_32_sys__lwp_continue(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_continue_args *uap = v;
struct proc *pt;
if ((pt = pfind(SCARG(uap, lwpid))) == NULL)
return ESRCH;
if (!CANSIGNAL(p, p->p_cred, pt, 0))
return EPERM;
pt->p_stat = SRUN;
return 0;
}
int
svr4_32_sys__lwp_getprivate(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
/* XXX: Use mach field! */
*retval = (register_t)p->p_thread;
return 0;
}
int
svr4_32_sys__lwp_setprivate(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct svr4_32_sys__lwp_setprivate_args *uap = v;
/*
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
*
* This has many problems:
*
* 1) we are using an old, left over field from Mach
*
* 2) the lwpid_t is an unsigned int but the p_thread
* field is a (64-bit) pointer.
*
* 3) we're copying in 64-bits from a 32-bit field.
*/
return copyin((caddr_t)(u_long)SCARG(uap, buffer),
&p->p_thread, sizeof(void *));
return 0;
}