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Added GETSHMASK command to prctl(). This is incomplete, we do not really 

keep track of the shmask yet. (It could go in p->p_emuldata)
This commit is contained in:
manu 2002-05-02 17:17:29 +00:00
parent 6f5d858e4b
commit 494d226a5d
1 changed files with 36 additions and 4 deletions
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40
sys/compat/irix/irix_prctl.c
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@ -1,4 +1,4 @@
/* $NetBSD: irix_prctl.c,v 1.8 2002/04/29 16:01:12 manu Exp $ */
/* $NetBSD: irix_prctl.c,v 1.9 2002/05/02 17:17:29 manu Exp $ */
/*-
* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.8 2002/04/29 16:01:12 manu Exp $");
__KERNEL_RCSID(0, "$NetBSD: irix_prctl.c,v 1.9 2002/05/02 17:17:29 manu Exp $");
#include <sys/errno.h>
#include <sys/types.h>
@ -63,6 +63,7 @@ struct irix_sproc_child_args {
struct proc **isc_proc;
void *isc_entry;
void *isc_arg;
void *isc_aux;
};
static void irix_sproc_child __P((struct irix_sproc_child_args *));
static int irix_sproc __P((void *, unsigned int, void *, caddr_t, size_t,
@ -85,6 +86,32 @@ irix_sys_prctl(p, v, retval)
#endif
switch(option) {
case IRIX_PR_GETSHMASK: { /* Get shared resources */
struct proc *p2;
int shmask = 0;
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;
if (p->p_vmspace == p2->p_vmspace)
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;
*retval = (register_t)shmask;
return 0;
break;
}
case IRIX_PR_LASTSHEXIT: /* "Last sproc exit" */
/* We do nothing */
break;
@ -232,6 +259,9 @@ static int irix_sproc(entry, inh, arg, sp, len, pid, p, retval)
isc.isc_proc = &p2;
isc.isc_entry = entry;
isc.isc_arg = arg;
if ((error = copyin((void *)(tf->f_regs[SP] + 28),
&isc.isc_aux, sizeof(isc.isc_aux))) != 0)
isc.isc_aux = 0;
if ((error = fork1(p, bsd_flags, SIGCHLD, (void *)sp, len,
(void *)irix_sproc_child, (void *)&isc, retval, &p2)) != 0)
@ -265,9 +295,11 @@ irix_sproc_child(isc)
/*
* Setup child arguments
*/
* The libc stub will copy S3 to A1 once we return to userland.
*/
tf->f_regs[A0] = (unsigned long)isc->isc_arg;
tf->f_regs[A1] = tf->f_regs[S3]; /* XXX Really useful? */
tf->f_regs[A1] = (unsigned long)isc->isc_aux;
tf->f_regs[S3] = (unsigned long)isc->isc_aux;
/*
* We do not need isc anymore, we can wakeup our parent