742 lines
18 KiB
C
742 lines
18 KiB
C
/* $NetBSD: irix_prctl.c,v 1.13 2002/06/12 20:33:20 manu Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Emmanuel Dreyfus.
|
|
*
|
|
* 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.13 2002/06/12 20:33:20 manu Exp $");
|
|
|
|
#include <sys/errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/pool.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/resourcevar.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
#include <uvm/uvm_map.h>
|
|
|
|
#include <machine/regnum.h>
|
|
#include <machine/vmparam.h>
|
|
|
|
#include <compat/svr4/svr4_types.h>
|
|
|
|
#include <compat/irix/irix_types.h>
|
|
#include <compat/irix/irix_exec.h>
|
|
#include <compat/irix/irix_prctl.h>
|
|
#include <compat/irix/irix_signal.h>
|
|
#include <compat/irix/irix_syscallargs.h>
|
|
|
|
struct irix_sproc_child_args {
|
|
struct proc **isc_proc;
|
|
void *isc_entry;
|
|
void *isc_arg;
|
|
size_t isc_len;
|
|
int isc_inh;
|
|
struct proc *isc_parent;
|
|
};
|
|
static void irix_sproc_child __P((struct irix_sproc_child_args *));
|
|
static int irix_sproc __P((void *, unsigned int, void *, caddr_t, size_t,
|
|
pid_t, struct proc *, register_t *));
|
|
|
|
int
|
|
irix_sys_prctl(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct irix_sys_prctl_args /* {
|
|
syscallarg(int) option;
|
|
syscallarg(void *) arg1;
|
|
} */ *uap = v;
|
|
int option = SCARG(uap, option);
|
|
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sys_prctl(): option = %d\n", option);
|
|
#endif
|
|
|
|
switch(option) {
|
|
case IRIX_PR_GETSHMASK: { /* Get shared resources */
|
|
struct proc *p2;
|
|
int shmask = 0;
|
|
struct irix_emuldata *ied;
|
|
|
|
p2 = pfind((pid_t)SCARG(uap, arg1));
|
|
|
|
if (p2 == p || SCARG(uap, arg1) == 0) {
|
|
/* XXX return our own shmask */
|
|
return 0;
|
|
}
|
|
|
|
if (p2 == NULL)
|
|
return EINVAL;
|
|
|
|
ied = (struct irix_emuldata *)p->p_emuldata;
|
|
if (ied->ied_shareaddr)
|
|
shmask |= IRIX_PR_SADDR;
|
|
if (p->p_fd == p2->p_fd)
|
|
shmask |= IRIX_PR_SFDS;
|
|
if (p->p_cwdi == p2->p_cwdi);
|
|
shmask |= (IRIX_PR_SDIR|IRIX_PR_SUMASK);
|
|
|
|
*retval = (register_t)shmask;
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
case IRIX_PR_LASTSHEXIT: /* "Last sproc exit" */
|
|
/* We no nothing */
|
|
break;
|
|
|
|
case IRIX_PR_GETNSHARE: { /* Number of sproc share group memb.*/
|
|
struct irix_emuldata *ied;
|
|
struct proc *pp;
|
|
struct proc *shareparent;
|
|
int count;
|
|
|
|
ied = (struct irix_emuldata *)p->p_emuldata;
|
|
shareparent = ied->ied_shareparent;
|
|
if (shareparent == NULL) {
|
|
*retval = 0;
|
|
return 0;
|
|
}
|
|
|
|
count = 0;
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
if (irix_check_exec(pp)) {
|
|
ied = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (ied->ied_shareparent == shareparent)
|
|
count++;
|
|
}
|
|
}
|
|
|
|
*retval = count;
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
case IRIX_PR_TERMCHILD: { /* Send SIGHUP to children on exit */
|
|
struct irix_emuldata *ied;
|
|
|
|
ied = (struct irix_emuldata *)(p->p_emuldata);
|
|
ied->ied_pptr = p->p_pptr;
|
|
break;
|
|
}
|
|
|
|
case IRIX_PR_ISBLOCKED: { /* Is process blocked? */
|
|
pid_t pid = (pid_t)SCARG(uap, arg1);
|
|
struct irix_emuldata *ied;
|
|
struct proc *target;
|
|
struct pcred *pc;
|
|
|
|
if (pid == 0)
|
|
pid = p->p_pid;
|
|
|
|
if ((target = pfind(pid)) == NULL)
|
|
return ESRCH;
|
|
|
|
if (irix_check_exec(target) == 0)
|
|
return 0;
|
|
|
|
pc = p->p_cred;
|
|
if (!(pc->pc_ucred->cr_uid == 0 || \
|
|
pc->p_ruid == target->p_cred->p_ruid || \
|
|
pc->pc_ucred->cr_uid == target->p_cred->p_ruid || \
|
|
pc->p_ruid == target->p_ucred->cr_uid || \
|
|
pc->pc_ucred->cr_uid == target->p_ucred->cr_uid))
|
|
return EPERM;
|
|
|
|
ied = (struct irix_emuldata *)(target->p_emuldata);
|
|
*retval = (ied->ied_procblk_count < 0);
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
printf("Warning: call to unimplemented prctl() command %d\n",
|
|
option);
|
|
return EINVAL;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
irix_sys_pidsprocsp(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct irix_sys_pidsprocsp_args /* {
|
|
syscallarg(void *) entry;
|
|
syscallarg(unsigned) inh;
|
|
syscallarg(void *) arg;
|
|
syscallarg(caddr_t) sp;
|
|
syscallarg(irix_size_t) len;
|
|
syscallarg(irix_pid_t) pid;
|
|
} */ *uap = v;
|
|
|
|
/* pid is ignored for now */
|
|
printf("Warning: unsupported pid argument to IRIX sproc\n");
|
|
|
|
return irix_sproc(SCARG(uap, entry), SCARG(uap, inh), SCARG(uap, arg),
|
|
SCARG(uap, sp), SCARG(uap, len), SCARG(uap, pid), p, retval);
|
|
}
|
|
|
|
int
|
|
irix_sys_sprocsp(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct irix_sys_sprocsp_args /* {
|
|
syscallarg(void *) entry;
|
|
syscallarg(unsigned) inh;
|
|
syscallarg(void *) arg;
|
|
syscallarg(caddr_t) sp;
|
|
syscallarg(irix_size_t) len;
|
|
} */ *uap = v;
|
|
|
|
return irix_sproc(SCARG(uap, entry), SCARG(uap, inh), SCARG(uap, arg),
|
|
SCARG(uap, sp), SCARG(uap, len), 0, p, retval);
|
|
}
|
|
|
|
int
|
|
irix_sys_sproc(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct irix_sys_sproc_args /* {
|
|
syscallarg(void *) entry;
|
|
syscallarg(unsigned) inh;
|
|
syscallarg(void *) arg;
|
|
} */ *uap = v;
|
|
|
|
return irix_sproc(SCARG(uap, entry), SCARG(uap, inh), SCARG(uap, arg),
|
|
NULL, p->p_rlimit[RLIMIT_STACK].rlim_cur, 0, p, retval);
|
|
}
|
|
|
|
|
|
static int
|
|
irix_sproc(entry, inh, arg, sp, len, pid, p, retval)
|
|
void *entry;
|
|
unsigned int inh;
|
|
void *arg;
|
|
caddr_t sp;
|
|
size_t len;
|
|
pid_t pid;
|
|
struct proc *p;
|
|
register_t *retval;
|
|
{
|
|
int bsd_flags = 0;
|
|
struct exec_vmcmd vmc;
|
|
int error;
|
|
struct proc *p2;
|
|
struct proc *pp;
|
|
struct irix_sproc_child_args isc;
|
|
struct irix_emuldata *ied;
|
|
struct irix_emuldata *iedp;
|
|
segsz_t stacksize;
|
|
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sproc(): entry = %p, inh = %x, arg = %p, sp = 0x%08lx, len = 0x%08lx, pid = %d\n", entry, inh, arg, (u_long)sp, (u_long)len, pid);
|
|
#endif
|
|
|
|
if (len == 0)
|
|
return EINVAL;
|
|
|
|
if (inh & IRIX_PR_SFDS)
|
|
bsd_flags |= FORK_SHAREFILES;
|
|
if (inh & (IRIX_PR_SUMASK|IRIX_PR_SDIR)) {
|
|
bsd_flags |= FORK_SHARECWD;
|
|
/* Forget them so that we don't get warning below */
|
|
inh &= ~(IRIX_PR_SUMASK|IRIX_PR_SDIR);
|
|
}
|
|
/* We know how to do PR_SUMASK and PR_SDIR together only */
|
|
if (inh & IRIX_PR_SUMASK)
|
|
printf("Warning: unimplemented IRIX sproc flag PR_SUMASK\n");
|
|
if (inh & IRIX_PR_SDIR)
|
|
printf("Warning: unimplemented IRIX sproc flag PR_SDIR\n");
|
|
|
|
/*
|
|
* Setting up child stack
|
|
*/
|
|
if (inh & IRIX_PR_SADDR) {
|
|
if (sp == NULL) {
|
|
/*
|
|
* All share group members have vm_maxsaddr set
|
|
* to the bottom of the lowest stack in address space,
|
|
* therefore we map the new stack there.
|
|
*/
|
|
sp = p->p_vmspace->vm_maxsaddr;
|
|
|
|
/* Compute new stacks's bottom address */
|
|
sp = (caddr_t)trunc_page((u_long)sp - len);
|
|
}
|
|
|
|
/* Now map the new stack */
|
|
bzero(&vmc, sizeof(vmc));
|
|
vmc.ev_addr = trunc_page((u_long)sp);
|
|
vmc.ev_len = round_page(len);
|
|
vmc.ev_prot = UVM_PROT_RWX;
|
|
vmc.ev_flags = UVM_FLAG_COPYONW|UVM_FLAG_FIXED|UVM_FLAG_OVERLAY;
|
|
vmc.ev_proc = vmcmd_map_zero;
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sproc(): new stack addr=0x%08lx, len=0x%08lx\n",
|
|
(u_long)sp, (u_long)len);
|
|
#endif
|
|
/* Eventually do map for a whole share group */
|
|
if ((error = irix_sync_saddr_vmcmd(p, &vmc)) != 0)
|
|
return error;
|
|
|
|
/* Update stack parameters for the share group members */
|
|
ied = (struct irix_emuldata *)p->p_emuldata;
|
|
stacksize = (p->p_vmspace->vm_minsaddr - sp) / PAGE_SIZE;
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
if (irix_check_exec(pp) == 0)
|
|
continue;
|
|
iedp = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (iedp->ied_shareparent != ied->ied_shareparent)
|
|
continue;
|
|
pp->p_vmspace->vm_maxsaddr = (caddr_t)sp;
|
|
pp->p_vmspace->vm_ssize = stacksize;
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* Arguments for irix_sproc_child()
|
|
*/
|
|
isc.isc_proc = &p2;
|
|
isc.isc_entry = entry;
|
|
isc.isc_arg = arg;
|
|
isc.isc_len = len;
|
|
isc.isc_inh = inh;
|
|
isc.isc_parent = p;
|
|
|
|
/*
|
|
* If revelant, initialize as the parent of the share group
|
|
*/
|
|
ied = (struct irix_emuldata *)(p->p_emuldata);
|
|
if (ied->ied_shareparent == NULL)
|
|
ied->ied_shareparent = p;
|
|
if (inh & IRIX_PR_SADDR)
|
|
ied->ied_shareaddr = 1;
|
|
|
|
if ((error = fork1(p, bsd_flags, SIGCHLD, (void *)sp, len,
|
|
(void *)irix_sproc_child, (void *)&isc, retval, &p2)) != 0)
|
|
return error;
|
|
|
|
/*
|
|
* Some local variables are referenced in irix_sproc_child()
|
|
* through isc. We need to ensure the child does not use them
|
|
* anymore before leaving.
|
|
*/
|
|
(void)ltsleep((void *)&isc, 0, "sproc", 0, NULL);
|
|
|
|
retval[0] = (register_t)p2->p_pid;
|
|
retval[1] = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
irix_sproc_child(isc)
|
|
struct irix_sproc_child_args *isc;
|
|
{
|
|
struct proc *p2 = *isc->isc_proc;
|
|
int inh = isc->isc_inh;
|
|
struct proc *parent = isc->isc_parent;
|
|
struct frame *tf = (struct frame *)p2->p_md.md_regs;
|
|
struct frame *ptf = (struct frame *)parent->p_md.md_regs;
|
|
struct pcred *pc;
|
|
struct plimit *pl;
|
|
struct irix_emuldata *ied;
|
|
struct irix_emuldata *parent_ied;
|
|
|
|
/*
|
|
* Handle shared VM space. The process private arena is not shared
|
|
*/
|
|
if (inh & IRIX_PR_SADDR) {
|
|
int error;
|
|
vaddr_t dstaddrp;
|
|
vaddr_t vm_min;
|
|
vsize_t vm_len;
|
|
|
|
vm_min = vm_map_min(&parent->p_vmspace->vm_map);
|
|
vm_len = vm_map_max(&parent->p_vmspace->vm_map) - vm_min;
|
|
|
|
/* Drop the current VM space */
|
|
uvm_unmap(&p2->p_vmspace->vm_map, vm_min, vm_min + vm_len);
|
|
|
|
/* Clone the mapping from the parent */
|
|
error = uvm_map_extract(&parent->p_vmspace->vm_map,
|
|
vm_min, vm_len, &p2->p_vmspace->vm_map, &dstaddrp, 0);
|
|
if (error != 0) {
|
|
printf("sproc: uvm_map_extract failed ");
|
|
printf("error = %d, pid = %d\n", error, p2->p_pid);
|
|
sigexit(p2, SIGSEGV);
|
|
}
|
|
|
|
/* Unmap the process private arena (shared) */
|
|
uvm_unmap(&p2->p_vmspace->vm_map, (vaddr_t)IRIX_PRDA,
|
|
(vaddr_t)((u_long)IRIX_PRDA + sizeof(struct irix_prda)));
|
|
|
|
/* Remap the process private arena (unshared) */
|
|
error = irix_prda_init(p2);
|
|
if (error != 0) {
|
|
printf("sproc: uvm_map arena failed ");
|
|
printf("error = %d, pid = %d\n", error, p2->p_pid);
|
|
sigexit(p2, SIGSEGV);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle shared process UID/GID
|
|
*/
|
|
if (inh & IRIX_PR_SID) {
|
|
pc = p2->p_cred;
|
|
parent->p_cred->p_refcnt++;
|
|
p2->p_cred = parent->p_cred;
|
|
if (--pc->p_refcnt == 0) {
|
|
crfree(pc->pc_ucred);
|
|
pool_put(&pcred_pool, pc);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle shared process limits
|
|
*/
|
|
if (inh & IRIX_PR_SULIMIT) {
|
|
pl = p2->p_limit;
|
|
parent->p_limit->p_refcnt++;
|
|
p2->p_limit = parent->p_limit;
|
|
if(--pl->p_refcnt == 0)
|
|
limfree(pl);
|
|
}
|
|
|
|
/*
|
|
* Setup PC to return to the child entry point
|
|
*/
|
|
tf->f_regs[PC] = (unsigned long)isc->isc_entry;
|
|
tf->f_regs[RA] = 0;
|
|
|
|
/*
|
|
* Setup child arguments
|
|
*/
|
|
tf->f_regs[A0] = (unsigned long)isc->isc_arg;
|
|
tf->f_regs[A1] = 0;
|
|
tf->f_regs[A2] = 0;
|
|
tf->f_regs[A3] = 0;
|
|
if (ptf->f_regs[S3] == (unsigned long)isc->isc_len) {
|
|
tf->f_regs[S0] = ptf->f_regs[S0];
|
|
tf->f_regs[S1] = ptf->f_regs[S1];
|
|
tf->f_regs[S2] = ptf->f_regs[S2];
|
|
tf->f_regs[S3] = ptf->f_regs[S3];
|
|
}
|
|
|
|
/*
|
|
* Join the share group
|
|
*/
|
|
ied = (struct irix_emuldata *)(p2->p_emuldata);
|
|
parent_ied = (struct irix_emuldata *)(parent->p_emuldata);
|
|
ied->ied_shareparent = parent_ied->ied_shareparent;
|
|
if (inh & IRIX_PR_SADDR)
|
|
ied->ied_shareaddr = 1;
|
|
|
|
/*
|
|
* We do not need isc anymore, we can wakeup our parent
|
|
*/
|
|
wakeup((void *)isc);
|
|
|
|
/*
|
|
* Return to userland for a newly created process
|
|
*/
|
|
child_return((void *)p2);
|
|
return;
|
|
}
|
|
|
|
int
|
|
irix_sys_procblk(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct irix_sys_procblk_args /* {
|
|
syscallarg(int) cmd;
|
|
syscallarg(pid_t) pid;
|
|
syscallarg(int) count;
|
|
} */ *uap = v;
|
|
int cmd = SCARG(uap, cmd);
|
|
struct irix_emuldata *ied;
|
|
struct proc *target;
|
|
struct pcred *pc;
|
|
int oldcount;
|
|
int error, last_error;
|
|
struct proc *pp;
|
|
struct irix_emuldata *pp_ied;
|
|
struct irix_sys_procblk_args cup;
|
|
|
|
/* Find the process */
|
|
if ((target = pfind(SCARG(uap, pid))) == NULL)
|
|
return ESRCH;
|
|
|
|
/* May we stop it? */
|
|
pc = p->p_cred;
|
|
if (!(pc->pc_ucred->cr_uid == 0 || \
|
|
pc->p_ruid == target->p_cred->p_ruid || \
|
|
pc->pc_ucred->cr_uid == target->p_cred->p_ruid || \
|
|
pc->p_ruid == target->p_ucred->cr_uid || \
|
|
pc->pc_ucred->cr_uid == target->p_ucred->cr_uid))
|
|
return EPERM;
|
|
|
|
/* Is it an IRIX process? */
|
|
if (irix_check_exec(target) == 0)
|
|
return EPERM;
|
|
|
|
ied = (struct irix_emuldata *)(target->p_emuldata);
|
|
oldcount = ied->ied_procblk_count;
|
|
|
|
switch (cmd) {
|
|
case IRIX_PROCBLK_BLOCK:
|
|
ied->ied_procblk_count--;
|
|
break;
|
|
|
|
case IRIX_PROCBLK_UNBLOCK:
|
|
ied->ied_procblk_count++;
|
|
break;
|
|
|
|
case IRIX_PROCBLK_COUNT:
|
|
if (SCARG(uap, count) > IRIX_PR_MAXBLOCKCNT ||
|
|
SCARG(uap, count) < IRIX_PR_MINBLOCKCNT)
|
|
return EINVAL;
|
|
ied->ied_procblk_count = SCARG(uap, count);
|
|
break;
|
|
|
|
case IRIX_PROCBLK_BLOCKALL:
|
|
case IRIX_PROCBLK_UNBLOCKALL:
|
|
case IRIX_PROCBLK_COUNTALL:
|
|
SCARG(&cup, cmd) = cmd -IRIX_PROCBLK_ONLYONE;
|
|
SCARG(&cup, count) = SCARG(uap, count);
|
|
last_error = 0;
|
|
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
/* Select IRIX processes */
|
|
if (irix_check_exec(target) == 0)
|
|
continue;
|
|
|
|
/* Is this process in the target share group? */
|
|
pp_ied = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (pp_ied->ied_shareparent != ied->ied_shareparent)
|
|
continue;
|
|
|
|
/* Recall procblk for this process */
|
|
SCARG(&cup, pid) = pp->p_pid;
|
|
if ((error = irix_sys_procblk(p, &cup, retval)) != 0)
|
|
last_error = error;
|
|
}
|
|
return last_error;
|
|
break;
|
|
default:
|
|
printf("Warning: unimplemented IRIX procblk command %d\n", cmd);
|
|
return EINVAL;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We emulate the process block/unblock using SIGSTOP and SIGCONT
|
|
* signals. This is not very accurate, since on IRIX theses way
|
|
* of blocking a process are completely separated.
|
|
*/
|
|
if (oldcount >= 0 && ied->ied_procblk_count < 0) /* blocked */
|
|
psignal(target, SIGSTOP);
|
|
|
|
if (oldcount < 0 && ied->ied_procblk_count >= 0) /* unblocked */
|
|
psignal(target, SIGCONT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
irix_prda_init(p)
|
|
struct proc *p;
|
|
{
|
|
int error;
|
|
struct exec_vmcmd evc;
|
|
|
|
bzero(&evc, sizeof(evc));
|
|
evc.ev_addr = (u_long)IRIX_PRDA;
|
|
evc.ev_len = sizeof(struct irix_prda);
|
|
evc.ev_prot = UVM_PROT_RW;
|
|
evc.ev_proc = *vmcmd_map_zero;
|
|
error = (*evc.ev_proc)(p, &evc);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
irix_sync_saddr_syscall(p, v, retval, syscall)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
int (*syscall) __P((struct proc *, void *, register_t *));
|
|
{
|
|
struct irix_emuldata *ied;
|
|
struct irix_emuldata *iedp;
|
|
struct proc *pp;
|
|
int error;
|
|
|
|
/*
|
|
* First run the system call on the original process
|
|
*/
|
|
if ((error = (*syscall)(p, v, retval)) != 0)
|
|
return error;
|
|
|
|
/*
|
|
* Is memory shared with other members of the share group ?
|
|
*/
|
|
ied = (struct irix_emuldata *)p->p_emuldata;
|
|
if (ied->ied_shareaddr == 0 || ied->ied_shareparent == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* Do the syscall for all ather process in the share group
|
|
*/
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
if (pp != p && irix_check_exec(pp)) {
|
|
iedp = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (iedp->ied_shareparent == ied->ied_shareparent &&
|
|
iedp->ied_shareaddr == 1)
|
|
if ((error = (*syscall)(pp, v, retval)) != 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Full success */
|
|
if (pp == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* In case of failure, destroy the whole share group
|
|
*/
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
if (irix_check_exec(pp)) {
|
|
iedp = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (iedp->ied_shareparent == ied->ied_shareparent)
|
|
sigexit(pp, SIGSEGV);
|
|
}
|
|
}
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sync_saddr_syscall: killed IRIX share group (pid %d)\n",
|
|
p->p_pid);
|
|
#endif
|
|
return error;
|
|
}
|
|
|
|
int
|
|
irix_sync_saddr_vmcmd(p, evc)
|
|
struct proc *p;
|
|
struct exec_vmcmd *evc;
|
|
{
|
|
|
|
struct irix_emuldata *ied;
|
|
struct irix_emuldata *iedp;
|
|
struct proc *pp;
|
|
int error;
|
|
void *addr;
|
|
int len;
|
|
|
|
/*
|
|
* First, do the command on the original process
|
|
*/
|
|
if ((error = (*evc->ev_proc)(p, evc)) != 0)
|
|
return error;
|
|
|
|
/*
|
|
* Check that this vmcmd does not operate on the private arena
|
|
*/
|
|
addr = (void *)evc->ev_addr;
|
|
len = evc->ev_len;
|
|
if ((u_long)addr >= (u_long)IRIX_PRDA &&
|
|
(u_long)addr + len < (u_long)IRIX_PRDA + sizeof(struct irix_prda))
|
|
printf("Warning: shared vmcmd on process private arena\n");
|
|
|
|
/*
|
|
* If the process shares memory within a share group, apply
|
|
* the vmcmd to all other members of the share group
|
|
*/
|
|
ied = (struct irix_emuldata *)p->p_emuldata;
|
|
if (ied->ied_shareaddr == 0 || ied->ied_shareparent == NULL)
|
|
return 0;
|
|
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
if (pp != p && irix_check_exec(pp)) {
|
|
iedp = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (iedp->ied_shareparent == ied->ied_shareparent &&
|
|
iedp->ied_shareaddr == 1)
|
|
if ((error = (*evc->ev_proc)(pp, evc)) != 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Full success */
|
|
if (pp == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* In case of failure, destroy the whole share group
|
|
*/
|
|
LIST_FOREACH(pp, &allproc, p_list) {
|
|
if (irix_check_exec(pp)) {
|
|
iedp = (struct irix_emuldata *)pp->p_emuldata;
|
|
if (iedp->ied_shareparent == ied->ied_shareparent)
|
|
sigexit(pp, SIGSEGV);
|
|
}
|
|
}
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sync_saddr_vmcmd: killed IRIX share group (pid %d)\n",
|
|
p->p_pid);
|
|
#endif
|
|
return EFAULT;
|
|
}
|
|
|