prioctl.c revision 406882169e00272f14067d948324d690893e6fe3
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All rights reserved. */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/vmparam.h>
#include <sys/var.h>
#include <sys/cmn_err.h>
#include <sys/cred.h>
#include <sys/debug.h>
#include <sys/errno.h>
#include <sys/file.h>
#include <sys/inline.h>
#include <sys/kmem.h>
#include <sys/proc.h>
#include <sys/sysmacros.h>
#include <sys/systm.h>
#include <sys/vfs.h>
#include <sys/vnode.h>
#include <sys/cpuvar.h>
#include <sys/session.h>
#include <sys/signal.h>
#include <sys/auxv.h>
#include <sys/user.h>
#include <sys/disp.h>
#include <sys/class.h>
#include <sys/ts.h>
#include <sys/mman.h>
#include <sys/fault.h>
#include <sys/syscall.h>
#include <sys/schedctl.h>
#include <sys/pset.h>
#include <sys/old_procfs.h>
#include <sys/zone.h>
#include <sys/time.h>
#include <sys/msacct.h>
#include <vm/rm.h>
#include <vm/as.h>
#include <vm/rm.h>
#include <vm/seg.h>
#include <vm/seg_vn.h>
#include <sys/contract_impl.h>
#include <sys/ctfs_impl.h>
#include <sys/ctfs.h>
#if defined(__i386) || defined(__i386_COMPAT)
#include <sys/sysi86.h>
#endif
#include <fs/proc/prdata.h>
static int isprwrioctl(int);
static ulong_t prmaprunflags(long);
static long prmapsetflags(long);
static void prsetrun(kthread_t *, prrun_t *);
static int propenm(prnode_t *, caddr_t, caddr_t, int *, cred_t *);
extern void oprgetstatus(kthread_t *, prstatus_t *, zone_t *);
extern void oprgetpsinfo(proc_t *, prpsinfo_t *, kthread_t *);
static int oprgetmap(proc_t *, list_t *);
static int
prctioctl(prnode_t *pnp, int cmd, intptr_t arg, int flag, cred_t *cr)
{
int error = 0;
ct_kparam_t kparam;
ct_param_t *param = &kparam.param;
ct_template_t *tmpl;
if (cmd != CT_TSET && cmd != CT_TGET)
return (EINVAL);
error = ctparam_copyin((void *)arg, &kparam, flag, cmd);
if (error != 0)
return (error);
if ((error = prlock(pnp, ZNO)) != 0) {
kmem_free(kparam.ctpm_kbuf, param->ctpm_size);
return (error);
}
tmpl = pnp->pr_common->prc_thread->t_lwp->lwp_ct_active[pnp->pr_cttype];
if (tmpl == NULL) {
prunlock(pnp);
kmem_free(kparam.ctpm_kbuf, param->ctpm_size);
return (ESTALE);
}
if (cmd == CT_TSET)
error = ctmpl_set(tmpl, &kparam, cr);
else
error = ctmpl_get(tmpl, &kparam);
prunlock(pnp);
if (cmd == CT_TGET && error == 0) {
error = ctparam_copyout(&kparam, (void *)arg, flag);
} else {
kmem_free(kparam.ctpm_kbuf, param->ctpm_size);
}
return (error);
}
/*
* Control operations (lots).
*/
/*ARGSUSED*/
#ifdef _SYSCALL32_IMPL
static int
prioctl64(
struct vnode *vp,
int cmd,
intptr_t arg,
int flag,
cred_t *cr,
int *rvalp,
caller_context_t *ct)
#else
int
prioctl(
struct vnode *vp,
int cmd,
intptr_t arg,
int flag,
cred_t *cr,
int *rvalp,
caller_context_t *ct)
#endif /* _SYSCALL32_IMPL */
{
caddr_t cmaddr = (caddr_t)arg;
proc_t *p;
user_t *up;
kthread_t *t;
klwp_t *lwp;
prnode_t *pnp = VTOP(vp);
prcommon_t *pcp;
prnode_t *xpnp = NULL;
int error;
int zdisp;
void *thing = NULL;
size_t thingsize = 0;
/*
* For copyin()/copyout().
*/
union {
caddr_t va;
int signo;
int nice;
uint_t lwpid;
long flags;
prstatus_t prstat;
prrun_t prrun;
sigset_t smask;
siginfo_t info;
sysset_t prmask;
prgregset_t regs;
prfpregset_t fpregs;
prpsinfo_t prps;
sigset_t holdmask;
fltset_t fltmask;
prcred_t prcred;
prhusage_t prhusage;
prmap_t prmap;
auxv_t auxv[__KERN_NAUXV_IMPL];
} un;
if (pnp->pr_type == PR_TMPL)
return (prctioctl(pnp, cmd, arg, flag, cr));
/*
* Support for old /proc interface.
*/
if (pnp->pr_pidfile != NULL) {
ASSERT(pnp->pr_type == PR_PIDDIR);
vp = pnp->pr_pidfile;
pnp = VTOP(vp);
ASSERT(pnp->pr_type == PR_PIDFILE);
}
if (pnp->pr_type != PR_PIDFILE && pnp->pr_type != PR_LWPIDFILE)
return (ENOTTY);
/*
* Fail ioctls which are logically "write" requests unless
* the user has write permission.
*/
if ((flag & FWRITE) == 0 && isprwrioctl(cmd))
return (EBADF);
/*
* Perform any necessary copyin() operations before
* locking the process. Helps avoid deadlocks and
* improves performance.
*
* Also, detect invalid ioctl codes here to avoid
* locking a process unnnecessarily.
*
* Also, prepare to allocate space that will be needed below,
* case by case.
*/
error = 0;
switch (cmd) {
case PIOCGETPR:
thingsize = sizeof (proc_t);
break;
case PIOCGETU:
thingsize = sizeof (user_t);
break;
case PIOCSTOP:
case PIOCWSTOP:
case PIOCLWPIDS:
case PIOCGTRACE:
case PIOCGENTRY:
case PIOCGEXIT:
case PIOCSRLC:
case PIOCRRLC:
case PIOCSFORK:
case PIOCRFORK:
case PIOCGREG:
case PIOCGFPREG:
case PIOCSTATUS:
case PIOCLSTATUS:
case PIOCPSINFO:
case PIOCMAXSIG:
case PIOCGXREGSIZE:
break;
case PIOCSXREG: /* set extra registers */
case PIOCGXREG: /* get extra registers */
#if defined(__sparc)
thingsize = sizeof (prxregset_t);
#else
thingsize = 0;
#endif
break;
case PIOCACTION:
thingsize = (NSIG-1) * sizeof (struct sigaction);
break;
case PIOCGHOLD:
case PIOCNMAP:
case PIOCMAP:
case PIOCGFAULT:
case PIOCCFAULT:
case PIOCCRED:
case PIOCGROUPS:
case PIOCUSAGE:
case PIOCLUSAGE:
break;
case PIOCOPENPD:
/*
* We will need this below.
* Allocate it now, before locking the process.
*/
xpnp = prgetnode(vp, PR_OPAGEDATA);
break;
case PIOCNAUXV:
case PIOCAUXV:
break;
#if defined(__i386) || defined(__amd64)
case PIOCNLDT:
case PIOCLDT:
break;
#endif /* __i386 || __amd64 */
#if defined(__sparc)
case PIOCGWIN:
thingsize = sizeof (gwindows_t);
break;
#endif /* __sparc */
case PIOCOPENM: /* open mapped object for reading */
if (cmaddr == NULL)
un.va = NULL;
else if (copyin(cmaddr, &un.va, sizeof (un.va)))
error = EFAULT;
break;
case PIOCRUN: /* make lwp or process runnable */
if (cmaddr == NULL)
un.prrun.pr_flags = 0;
else if (copyin(cmaddr, &un.prrun, sizeof (un.prrun)))
error = EFAULT;
break;
case PIOCOPENLWP: /* return /proc lwp file descriptor */
if (copyin(cmaddr, &un.lwpid, sizeof (un.lwpid)))
error = EFAULT;
break;
case PIOCSTRACE: /* set signal trace mask */
if (copyin(cmaddr, &un.smask, sizeof (un.smask)))
error = EFAULT;
break;
case PIOCSSIG: /* set current signal */
if (cmaddr == NULL)
un.info.si_signo = 0;
else if (copyin(cmaddr, &un.info, sizeof (un.info)))
error = EFAULT;
break;
case PIOCKILL: /* send signal */
case PIOCUNKILL: /* delete a signal */
if (copyin(cmaddr, &un.signo, sizeof (un.signo)))
error = EFAULT;
break;
case PIOCNICE: /* set nice priority */
if (copyin(cmaddr, &un.nice, sizeof (un.nice)))
error = EFAULT;
break;
case PIOCSENTRY: /* set syscall entry bit mask */
case PIOCSEXIT: /* set syscall exit bit mask */
if (copyin(cmaddr, &un.prmask, sizeof (un.prmask)))
error = EFAULT;
break;
case PIOCSET: /* set process flags */
case PIOCRESET: /* reset process flags */
if (copyin(cmaddr, &un.flags, sizeof (un.flags)))
error = EFAULT;
break;
case PIOCSREG: /* set general registers */
if (copyin(cmaddr, un.regs, sizeof (un.regs)))
error = EFAULT;
break;
case PIOCSFPREG: /* set floating-point registers */
if (copyin(cmaddr, &un.fpregs, sizeof (un.fpregs)))
error = EFAULT;
break;
case PIOCSHOLD: /* set signal-hold mask */
if (copyin(cmaddr, &un.holdmask, sizeof (un.holdmask)))
error = EFAULT;
break;
case PIOCSFAULT: /* set mask of traced faults */
if (copyin(cmaddr, &un.fltmask, sizeof (un.fltmask)))
error = EFAULT;
break;
default:
error = EINVAL;
break;
}
if (error)
return (error);
startover:
/*
* If we need kmem_alloc()d space then we allocate it now, before
* grabbing the process lock. Using kmem_alloc(KM_SLEEP) while
* holding the process lock leads to deadlock with the clock thread.
* (The clock thread wakes up the pageout daemon to free up space.
* If the clock thread blocks behind us and we are sleeping waiting
* for space, then space may never become available.)
*/
if (thingsize) {
ASSERT(thing == NULL);
thing = kmem_alloc(thingsize, KM_SLEEP);
}
switch (cmd) {
case PIOCPSINFO:
case PIOCGETPR:
case PIOCUSAGE:
case PIOCLUSAGE:
zdisp = ZYES;
break;
case PIOCSXREG: /* set extra registers */
/*
* perform copyin before grabbing the process lock
*/
if (thing) {
if (copyin(cmaddr, thing, thingsize)) {
kmem_free(thing, thingsize);
return (EFAULT);
}
}
/* fall through... */
default:
zdisp = ZNO;
break;
}
if ((error = prlock(pnp, zdisp)) != 0) {
if (thing != NULL)
kmem_free(thing, thingsize);
if (xpnp)
prfreenode(xpnp);
return (error);
}
pcp = pnp->pr_common;
p = pcp->prc_proc;
ASSERT(p != NULL);
/*
* Choose a thread/lwp for the operation.
*/
if (zdisp == ZNO && cmd != PIOCSTOP && cmd != PIOCWSTOP) {
if (pnp->pr_type == PR_LWPIDFILE && cmd != PIOCLSTATUS) {
t = pcp->prc_thread;
ASSERT(t != NULL);
} else {
t = prchoose(p); /* returns locked thread */
ASSERT(t != NULL);
thread_unlock(t);
}
lwp = ttolwp(t);
}
error = 0;
switch (cmd) {
case PIOCGETPR: /* read struct proc */
{
proc_t *prp = thing;
*prp = *p;
prunlock(pnp);
if (copyout(prp, cmaddr, sizeof (proc_t)))
error = EFAULT;
kmem_free(prp, sizeof (proc_t));
thing = NULL;
break;
}
case PIOCGETU: /* read u-area */
{
user_t *userp = thing;
up = PTOU(p);
*userp = *up;
prunlock(pnp);
if (copyout(userp, cmaddr, sizeof (user_t)))
error = EFAULT;
kmem_free(userp, sizeof (user_t));
thing = NULL;
break;
}
case PIOCOPENM: /* open mapped object for reading */
error = propenm(pnp, cmaddr, un.va, rvalp, cr);
/* propenm() called prunlock(pnp) */
break;
case PIOCSTOP: /* stop process or lwp from running */
case PIOCWSTOP: /* wait for process or lwp to stop */
/*
* Can't apply to a system process.
*/
if ((p->p_flag & SSYS) || p->p_as == &kas) {
prunlock(pnp);
error = EBUSY;
break;
}
if (cmd == PIOCSTOP)
pr_stop(pnp);
/*
* If an lwp is waiting for itself or its process, don't wait.
* The stopped lwp would never see the fact that it is stopped.
*/
if ((pnp->pr_type == PR_LWPIDFILE)?
(pcp->prc_thread == curthread) : (p == curproc)) {
if (cmd == PIOCWSTOP)
error = EBUSY;
prunlock(pnp);
break;
}
if ((error = pr_wait_stop(pnp, (time_t)0)) != 0)
break; /* pr_wait_stop() unlocked the process */
if (cmaddr == NULL)
prunlock(pnp);
else {
/*
* Return process/lwp status information.
*/
t = pr_thread(pnp); /* returns locked thread */
thread_unlock(t);
oprgetstatus(t, &un.prstat, VTOZONE(vp));
prunlock(pnp);
if (copyout(&un.prstat, cmaddr, sizeof (un.prstat)))
error = EFAULT;
}
break;
case PIOCRUN: /* make lwp or process runnable */
{
long flags = un.prrun.pr_flags;
/*
* Cannot set an lwp running is it is not stopped.
* Also, no lwp other than the /proc agent lwp can
* be set running so long as the /proc agent lwp exists.
*/
if ((!ISTOPPED(t) && !VSTOPPED(t) &&
!(t->t_proc_flag & TP_PRSTOP)) ||
(p->p_agenttp != NULL &&
(t != p->p_agenttp || pnp->pr_type != PR_LWPIDFILE))) {
prunlock(pnp);
error = EBUSY;
break;
}
if (flags & (PRSHOLD|PRSTRACE|PRSFAULT|PRSVADDR))
prsetrun(t, &un.prrun);
error = pr_setrun(pnp, prmaprunflags(flags));
prunlock(pnp);
break;
}
case PIOCLWPIDS: /* get array of lwp identifiers */
{
int nlwp;
int Nlwp;
id_t *idp;
id_t *Bidp;
Nlwp = nlwp = p->p_lwpcnt;
if (thing && thingsize != (Nlwp+1) * sizeof (id_t)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = (Nlwp+1) * sizeof (id_t);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
prunlock(pnp);
goto startover;
}
idp = thing;
thing = NULL;
Bidp = idp;
if ((t = p->p_tlist) != NULL) {
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
ASSERT(nlwp > 0);
--nlwp;
*idp++ = t->t_tid;
} while ((t = t->t_forw) != p->p_tlist);
}
*idp = 0;
ASSERT(nlwp == 0);
prunlock(pnp);
if (copyout(Bidp, cmaddr, (Nlwp+1) * sizeof (id_t)))
error = EFAULT;
kmem_free(Bidp, (Nlwp+1) * sizeof (id_t));
break;
}
case PIOCOPENLWP: /* return /proc lwp file descriptor */
{
vnode_t *xvp;
int n;
prunlock(pnp);
if ((xvp = prlwpnode(pnp, un.lwpid)) == NULL)
error = ENOENT;
else if (error = fassign(&xvp, flag & (FREAD|FWRITE), &n)) {
VN_RELE(xvp);
} else
*rvalp = n;
break;
}
case PIOCOPENPD: /* return /proc page data file descriptor */
{
vnode_t *xvp = PTOV(xpnp);
vnode_t *dp = pnp->pr_parent;
int n;
if (pnp->pr_type == PR_LWPIDFILE) {
dp = VTOP(dp)->pr_parent;
dp = VTOP(dp)->pr_parent;
}
ASSERT(VTOP(dp)->pr_type == PR_PIDDIR);
VN_HOLD(dp);
pcp = pnp->pr_pcommon;
xpnp->pr_ino = ptoi(pcp->prc_pid);
xpnp->pr_common = pcp;
xpnp->pr_pcommon = pcp;
xpnp->pr_parent = dp;
xpnp->pr_next = p->p_plist;
p->p_plist = xvp;
prunlock(pnp);
if (error = fassign(&xvp, FREAD, &n)) {
VN_RELE(xvp);
} else
*rvalp = n;
xpnp = NULL;
break;
}
case PIOCGTRACE: /* get signal trace mask */
prassignset(&un.smask, &p->p_sigmask);
prunlock(pnp);
if (copyout(&un.smask, cmaddr, sizeof (un.smask)))
error = EFAULT;
break;
case PIOCSTRACE: /* set signal trace mask */
prdelset(&un.smask, SIGKILL);
prassignset(&p->p_sigmask, &un.smask);
if (!sigisempty(&p->p_sigmask))
p->p_proc_flag |= P_PR_TRACE;
else if (prisempty(&p->p_fltmask)) {
up = PTOU(p);
if (up->u_systrap == 0)
p->p_proc_flag &= ~P_PR_TRACE;
}
prunlock(pnp);
break;
case PIOCSSIG: /* set current signal */
error = pr_setsig(pnp, &un.info);
prunlock(pnp);
if (un.info.si_signo == SIGKILL && error == 0)
pr_wait_die(pnp);
break;
case PIOCKILL: /* send signal */
{
int sig = (int)un.signo;
error = pr_kill(pnp, sig, cr);
prunlock(pnp);
if (sig == SIGKILL && error == 0)
pr_wait_die(pnp);
break;
}
case PIOCUNKILL: /* delete a signal */
error = pr_unkill(pnp, (int)un.signo);
prunlock(pnp);
break;
case PIOCNICE: /* set nice priority */
error = pr_nice(p, (int)un.nice, cr);
prunlock(pnp);
break;
case PIOCGENTRY: /* get syscall entry bit mask */
case PIOCGEXIT: /* get syscall exit bit mask */
up = PTOU(p);
if (cmd == PIOCGENTRY) {
prassignset(&un.prmask, &up->u_entrymask);
} else {
prassignset(&un.prmask, &up->u_exitmask);
}
prunlock(pnp);
if (copyout(&un.prmask, cmaddr, sizeof (un.prmask)))
error = EFAULT;
break;
case PIOCSENTRY: /* set syscall entry bit mask */
case PIOCSEXIT: /* set syscall exit bit mask */
pr_setentryexit(p, &un.prmask, cmd == PIOCSENTRY);
prunlock(pnp);
break;
case PIOCSRLC: /* obsolete: set running on last /proc close */
error = pr_set(p, prmapsetflags(PR_RLC));
prunlock(pnp);
break;
case PIOCRRLC: /* obsolete: reset run-on-last-close flag */
error = pr_unset(p, prmapsetflags(PR_RLC));
prunlock(pnp);
break;
case PIOCSFORK: /* obsolete: set inherit-on-fork flag */
error = pr_set(p, prmapsetflags(PR_FORK));
prunlock(pnp);
break;
case PIOCRFORK: /* obsolete: reset inherit-on-fork flag */
error = pr_unset(p, prmapsetflags(PR_FORK));
prunlock(pnp);
break;
case PIOCSET: /* set process flags */
error = pr_set(p, prmapsetflags(un.flags));
prunlock(pnp);
break;
case PIOCRESET: /* reset process flags */
error = pr_unset(p, prmapsetflags(un.flags));
prunlock(pnp);
break;
case PIOCGREG: /* get general registers */
if (t->t_state != TS_STOPPED && !VSTOPPED(t))
bzero(un.regs, sizeof (un.regs));
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prgetprregs(lwp, un.regs);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (copyout(un.regs, cmaddr, sizeof (un.regs)))
error = EFAULT;
break;
case PIOCSREG: /* set general registers */
if (!ISTOPPED(t) && !VSTOPPED(t) && !DSTOPPED(t))
error = EBUSY;
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prsetprregs(lwp, un.regs, 0);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
break;
case PIOCGFPREG: /* get floating-point registers */
if (!prhasfp()) {
prunlock(pnp);
error = EINVAL; /* No FP support */
break;
}
if (t->t_state != TS_STOPPED && !VSTOPPED(t))
bzero(&un.fpregs, sizeof (un.fpregs));
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prgetprfpregs(lwp, &un.fpregs);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (copyout(&un.fpregs, cmaddr, sizeof (un.fpregs)))
error = EFAULT;
break;
case PIOCSFPREG: /* set floating-point registers */
if (!prhasfp())
error = EINVAL; /* No FP support */
else if (!ISTOPPED(t) && !VSTOPPED(t) && !DSTOPPED(t))
error = EBUSY;
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prsetprfpregs(lwp, &un.fpregs);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
break;
case PIOCGXREGSIZE: /* get the size of the extra registers */
{
int xregsize;
if (prhasx(p)) {
xregsize = prgetprxregsize(p);
prunlock(pnp);
if (copyout(&xregsize, cmaddr, sizeof (xregsize)))
error = EFAULT;
} else {
prunlock(pnp);
error = EINVAL; /* No extra register support */
}
break;
}
case PIOCGXREG: /* get extra registers */
if (prhasx(p)) {
bzero(thing, thingsize);
if (t->t_state == TS_STOPPED || VSTOPPED(t)) {
/* drop p_lock to touch the stack */
mutex_exit(&p->p_lock);
prgetprxregs(lwp, thing);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (copyout(thing, cmaddr, thingsize))
error = EFAULT;
} else {
prunlock(pnp);
error = EINVAL; /* No extra register support */
}
if (thing) {
kmem_free(thing, thingsize);
thing = NULL;
}
break;
case PIOCSXREG: /* set extra registers */
if (!ISTOPPED(t) && !VSTOPPED(t) && !DSTOPPED(t))
error = EBUSY;
else if (!prhasx(p))
error = EINVAL; /* No extra register support */
else if (thing) {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prsetprxregs(lwp, thing);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (thing) {
kmem_free(thing, thingsize);
thing = NULL;
}
break;
case PIOCSTATUS: /* get process/lwp status */
oprgetstatus(t, &un.prstat, VTOZONE(vp));
prunlock(pnp);
if (copyout(&un.prstat, cmaddr, sizeof (un.prstat)))
error = EFAULT;
break;
case PIOCLSTATUS: /* get status for process & all lwps */
{
int Nlwp;
int nlwp;
prstatus_t *Bprsp;
prstatus_t *prsp;
nlwp = Nlwp = p->p_lwpcnt;
if (thing && thingsize != (Nlwp+1) * sizeof (prstatus_t)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = (Nlwp+1) * sizeof (prstatus_t);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
prunlock(pnp);
goto startover;
}
Bprsp = thing;
thing = NULL;
prsp = Bprsp;
oprgetstatus(t, prsp, VTOZONE(vp));
t = p->p_tlist;
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
ASSERT(nlwp > 0);
--nlwp;
oprgetstatus(t, ++prsp, VTOZONE(vp));
} while ((t = t->t_forw) != p->p_tlist);
ASSERT(nlwp == 0);
prunlock(pnp);
if (copyout(Bprsp, cmaddr, (Nlwp+1) * sizeof (prstatus_t)))
error = EFAULT;
kmem_free(Bprsp, (Nlwp+1) * sizeof (prstatus_t));
break;
}
case PIOCPSINFO: /* get ps(1) information */
{
prpsinfo_t *psp = &un.prps;
oprgetpsinfo(p, psp,
(pnp->pr_type == PR_LWPIDFILE)? pcp->prc_thread : NULL);
prunlock(pnp);
if (copyout(&un.prps, cmaddr, sizeof (un.prps)))
error = EFAULT;
break;
}
case PIOCMAXSIG: /* get maximum signal number */
{
int n = NSIG-1;
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (n)))
error = EFAULT;
break;
}
case PIOCACTION: /* get signal action structures */
{
uint_t sig;
struct sigaction *sap = thing;
up = PTOU(p);
for (sig = 1; sig < NSIG; sig++)
prgetaction(p, up, sig, &sap[sig-1]);
prunlock(pnp);
if (copyout(sap, cmaddr, (NSIG-1) * sizeof (struct sigaction)))
error = EFAULT;
kmem_free(sap, (NSIG-1) * sizeof (struct sigaction));
thing = NULL;
break;
}
case PIOCGHOLD: /* get signal-hold mask */
schedctl_finish_sigblock(t);
sigktou(&t->t_hold, &un.holdmask);
prunlock(pnp);
if (copyout(&un.holdmask, cmaddr, sizeof (un.holdmask)))
error = EFAULT;
break;
case PIOCSHOLD: /* set signal-hold mask */
pr_sethold(pnp, &un.holdmask);
prunlock(pnp);
break;
case PIOCNMAP: /* get number of memory mappings */
{
int n;
struct as *as = p->p_as;
if ((p->p_flag & SSYS) || as == &kas)
n = 0;
else {
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
n = prnsegs(as, 0);
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (int)))
error = EFAULT;
break;
}
case PIOCMAP: /* get memory map information */
{
list_t iolhead;
struct as *as = p->p_as;
if ((p->p_flag & SSYS) || as == &kas) {
error = 0;
prunlock(pnp);
} else {
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
error = oprgetmap(p, &iolhead);
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
prunlock(pnp);
error = pr_iol_copyout_and_free(&iolhead,
&cmaddr, error);
}
/*
* The procfs PIOCMAP ioctl returns an all-zero buffer
* to indicate the end of the prmap[] array.
* Append it to whatever has already been copied out.
*/
bzero(&un.prmap, sizeof (un.prmap));
if (!error && copyout(&un.prmap, cmaddr, sizeof (un.prmap)))
error = EFAULT;
break;
}
case PIOCGFAULT: /* get mask of traced faults */
prassignset(&un.fltmask, &p->p_fltmask);
prunlock(pnp);
if (copyout(&un.fltmask, cmaddr, sizeof (un.fltmask)))
error = EFAULT;
break;
case PIOCSFAULT: /* set mask of traced faults */
pr_setfault(p, &un.fltmask);
prunlock(pnp);
break;
case PIOCCFAULT: /* clear current fault */
lwp->lwp_curflt = 0;
prunlock(pnp);
break;
case PIOCCRED: /* get process credentials */
{
cred_t *cp;
mutex_enter(&p->p_crlock);
cp = p->p_cred;
un.prcred.pr_euid = crgetuid(cp);
un.prcred.pr_ruid = crgetruid(cp);
un.prcred.pr_suid = crgetsuid(cp);
un.prcred.pr_egid = crgetgid(cp);
un.prcred.pr_rgid = crgetrgid(cp);
un.prcred.pr_sgid = crgetsgid(cp);
un.prcred.pr_ngroups = crgetngroups(cp);
mutex_exit(&p->p_crlock);
prunlock(pnp);
if (copyout(&un.prcred, cmaddr, sizeof (un.prcred)))
error = EFAULT;
break;
}
case PIOCGROUPS: /* get supplementary groups */
{
cred_t *cp;
mutex_enter(&p->p_crlock);
cp = p->p_cred;
crhold(cp);
mutex_exit(&p->p_crlock);
prunlock(pnp);
if (copyout(crgetgroups(cp), cmaddr,
MAX(crgetngroups(cp), 1) * sizeof (gid_t)))
error = EFAULT;
crfree(cp);
break;
}
case PIOCUSAGE: /* get usage info */
{
/*
* For an lwp file descriptor, return just the lwp usage.
* For a process file descriptor, return total usage,
* all current lwps plus all defunct lwps.
*/
prhusage_t *pup = &un.prhusage;
prusage_t *upup;
bzero(pup, sizeof (*pup));
pup->pr_tstamp = gethrtime();
if (pnp->pr_type == PR_LWPIDFILE) {
t = pcp->prc_thread;
if (t != NULL)
prgetusage(t, pup);
else
error = ENOENT;
} else {
pup->pr_count = p->p_defunct;
pup->pr_create = p->p_mstart;
pup->pr_term = p->p_mterm;
pup->pr_rtime = p->p_mlreal;
pup->pr_utime = p->p_acct[LMS_USER];
pup->pr_stime = p->p_acct[LMS_SYSTEM];
pup->pr_ttime = p->p_acct[LMS_TRAP];
pup->pr_tftime = p->p_acct[LMS_TFAULT];
pup->pr_dftime = p->p_acct[LMS_DFAULT];
pup->pr_kftime = p->p_acct[LMS_KFAULT];
pup->pr_ltime = p->p_acct[LMS_USER_LOCK];
pup->pr_slptime = p->p_acct[LMS_SLEEP];
pup->pr_wtime = p->p_acct[LMS_WAIT_CPU];
pup->pr_stoptime = p->p_acct[LMS_STOPPED];
pup->pr_minf = p->p_ru.minflt;
pup->pr_majf = p->p_ru.majflt;
pup->pr_nswap = p->p_ru.nswap;
pup->pr_inblk = p->p_ru.inblock;
pup->pr_oublk = p->p_ru.oublock;
pup->pr_msnd = p->p_ru.msgsnd;
pup->pr_mrcv = p->p_ru.msgrcv;
pup->pr_sigs = p->p_ru.nsignals;
pup->pr_vctx = p->p_ru.nvcsw;
pup->pr_ictx = p->p_ru.nivcsw;
pup->pr_sysc = p->p_ru.sysc;
pup->pr_ioch = p->p_ru.ioch;
/*
* Add the usage information for each active lwp.
*/
if ((t = p->p_tlist) != NULL &&
!(pcp->prc_flags & PRC_DESTROY)) {
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
pup->pr_count++;
praddusage(t, pup);
} while ((t = t->t_forw) != p->p_tlist);
}
}
prunlock(pnp);
upup = kmem_zalloc(sizeof (*upup), KM_SLEEP);
prcvtusage(&un.prhusage, upup);
if (copyout(upup, cmaddr, sizeof (*upup)))
error = EFAULT;
kmem_free(upup, sizeof (*upup));
break;
}
case PIOCLUSAGE: /* get detailed usage info */
{
int Nlwp;
int nlwp;
prusage_t *upup;
prusage_t *Bupup;
prhusage_t *pup;
hrtime_t curtime;
nlwp = Nlwp = (pcp->prc_flags & PRC_DESTROY)? 0 : p->p_lwpcnt;
if (thing && thingsize !=
sizeof (prhusage_t) + (Nlwp+1) * sizeof (prusage_t)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = sizeof (prhusage_t) +
(Nlwp+1) * sizeof (prusage_t);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
prunlock(pnp);
goto startover;
}
pup = thing;
upup = Bupup = (prusage_t *)(pup + 1);
ASSERT(p == pcp->prc_proc);
curtime = gethrtime();
/*
* First the summation over defunct lwps.
*/
bzero(pup, sizeof (*pup));
pup->pr_count = p->p_defunct;
pup->pr_tstamp = curtime;
pup->pr_create = p->p_mstart;
pup->pr_term = p->p_mterm;
pup->pr_rtime = p->p_mlreal;
pup->pr_utime = p->p_acct[LMS_USER];
pup->pr_stime = p->p_acct[LMS_SYSTEM];
pup->pr_ttime = p->p_acct[LMS_TRAP];
pup->pr_tftime = p->p_acct[LMS_TFAULT];
pup->pr_dftime = p->p_acct[LMS_DFAULT];
pup->pr_kftime = p->p_acct[LMS_KFAULT];
pup->pr_ltime = p->p_acct[LMS_USER_LOCK];
pup->pr_slptime = p->p_acct[LMS_SLEEP];
pup->pr_wtime = p->p_acct[LMS_WAIT_CPU];
pup->pr_stoptime = p->p_acct[LMS_STOPPED];
pup->pr_minf = p->p_ru.minflt;
pup->pr_majf = p->p_ru.majflt;
pup->pr_nswap = p->p_ru.nswap;
pup->pr_inblk = p->p_ru.inblock;
pup->pr_oublk = p->p_ru.oublock;
pup->pr_msnd = p->p_ru.msgsnd;
pup->pr_mrcv = p->p_ru.msgrcv;
pup->pr_sigs = p->p_ru.nsignals;
pup->pr_vctx = p->p_ru.nvcsw;
pup->pr_ictx = p->p_ru.nivcsw;
pup->pr_sysc = p->p_ru.sysc;
pup->pr_ioch = p->p_ru.ioch;
prcvtusage(pup, upup);
/*
* Fill one prusage struct for each active lwp.
*/
if ((t = p->p_tlist) != NULL &&
!(pcp->prc_flags & PRC_DESTROY)) {
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
ASSERT(nlwp > 0);
--nlwp;
upup++;
prgetusage(t, pup);
prcvtusage(pup, upup);
} while ((t = t->t_forw) != p->p_tlist);
}
ASSERT(nlwp == 0);
prunlock(pnp);
if (copyout(Bupup, cmaddr, (Nlwp+1) * sizeof (prusage_t)))
error = EFAULT;
kmem_free(thing, thingsize);
thing = NULL;
break;
}
case PIOCNAUXV: /* get number of aux vector entries */
{
int n = __KERN_NAUXV_IMPL;
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (int)))
error = EFAULT;
break;
}
case PIOCAUXV: /* get aux vector (see sys/auxv.h) */
{
up = PTOU(p);
bcopy(up->u_auxv, un.auxv,
__KERN_NAUXV_IMPL * sizeof (auxv_t));
prunlock(pnp);
if (copyout(un.auxv, cmaddr,
__KERN_NAUXV_IMPL * sizeof (auxv_t)))
error = EFAULT;
break;
}
#if defined(__i386) || defined(__amd64)
case PIOCNLDT: /* get number of LDT entries */
{
int n;
mutex_exit(&p->p_lock);
mutex_enter(&p->p_ldtlock);
n = prnldt(p);
mutex_exit(&p->p_ldtlock);
mutex_enter(&p->p_lock);
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (n)))
error = EFAULT;
break;
}
case PIOCLDT: /* get LDT entries */
{
struct ssd *ssd;
int n;
mutex_exit(&p->p_lock);
mutex_enter(&p->p_ldtlock);
n = prnldt(p);
if (thing && thingsize != (n+1) * sizeof (*ssd)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = (n+1) * sizeof (*ssd);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
mutex_exit(&p->p_ldtlock);
mutex_enter(&p->p_lock);
prunlock(pnp);
goto startover;
}
ssd = thing;
thing = NULL;
if (n != 0)
prgetldt(p, ssd);
mutex_exit(&p->p_ldtlock);
mutex_enter(&p->p_lock);
prunlock(pnp);
/* mark the end of the list with a null entry */
bzero(&ssd[n], sizeof (*ssd));
if (copyout(ssd, cmaddr, (n+1) * sizeof (*ssd)))
error = EFAULT;
kmem_free(ssd, (n+1) * sizeof (*ssd));
break;
}
#endif /* __i386 || __amd64 */
#if defined(__sparc)
case PIOCGWIN: /* get gwindows_t (see sys/reg.h) */
{
gwindows_t *gwp = thing;
/* drop p->p_lock while touching the stack */
mutex_exit(&p->p_lock);
bzero(gwp, sizeof (*gwp));
prgetwindows(lwp, gwp);
mutex_enter(&p->p_lock);
prunlock(pnp);
if (copyout(gwp, cmaddr, sizeof (*gwp)))
error = EFAULT;
kmem_free(gwp, sizeof (gwindows_t));
thing = NULL;
break;
}
#endif /* __sparc */
default:
prunlock(pnp);
error = EINVAL;
break;
}
ASSERT(thing == NULL);
ASSERT(xpnp == NULL);
return (error);
}
#ifdef _SYSCALL32_IMPL
static int oprgetmap32(proc_t *, list_t *);
void
oprgetstatus32(kthread_t *t, prstatus32_t *sp, zone_t *zp)
{
proc_t *p = ttoproc(t);
klwp_t *lwp = ttolwp(t);
int32_t flags;
user_t *up;
ulong_t instr;
ASSERT(MUTEX_HELD(&p->p_lock));
up = PTOU(p);
bzero(sp, sizeof (*sp));
flags = 0L;
if (t->t_state == TS_STOPPED) {
flags |= PR_STOPPED;
if ((t->t_schedflag & TS_PSTART) == 0)
flags |= PR_ISTOP;
} else if (VSTOPPED(t)) {
flags |= PR_STOPPED|PR_ISTOP;
}
if (!(flags & PR_ISTOP) && (t->t_proc_flag & TP_PRSTOP))
flags |= PR_DSTOP;
if (lwp->lwp_asleep)
flags |= PR_ASLEEP;
if (p->p_proc_flag & P_PR_FORK)
flags |= PR_FORK;
if (p->p_proc_flag & P_PR_RUNLCL)
flags |= PR_RLC;
if (p->p_proc_flag & P_PR_KILLCL)
flags |= PR_KLC;
if (p->p_proc_flag & P_PR_ASYNC)
flags |= PR_ASYNC;
if (p->p_proc_flag & P_PR_BPTADJ)
flags |= PR_BPTADJ;
if (p->p_proc_flag & P_PR_PTRACE)
flags |= PR_PCOMPAT;
if (t->t_proc_flag & TP_MSACCT)
flags |= PR_MSACCT;
sp->pr_flags = flags;
if (VSTOPPED(t)) {
sp->pr_why = PR_REQUESTED;
sp->pr_what = 0;
} else {
sp->pr_why = t->t_whystop;
sp->pr_what = t->t_whatstop;
}
if (t->t_whystop == PR_FAULTED) {
siginfo_kto32(&lwp->lwp_siginfo, &sp->pr_info);
if (t->t_whatstop == FLTPAGE)
sp->pr_info.si_addr =
(caddr32_t)(uintptr_t)lwp->lwp_siginfo.si_addr;
} else if (lwp->lwp_curinfo)
siginfo_kto32(&lwp->lwp_curinfo->sq_info, &sp->pr_info);
if (SI_FROMUSER(&lwp->lwp_siginfo) && zp->zone_id != GLOBAL_ZONEID &&
sp->pr_info.si_zoneid != zp->zone_id) {
sp->pr_info.si_pid = zp->zone_zsched->p_pid;
sp->pr_info.si_uid = 0;
sp->pr_info.si_ctid = -1;
sp->pr_info.si_zoneid = zp->zone_id;
}
sp->pr_cursig = lwp->lwp_cursig;
prassignset(&sp->pr_sigpend, &p->p_sig);
prassignset(&sp->pr_lwppend, &t->t_sig);
schedctl_finish_sigblock(t);
prassignset(&sp->pr_sighold, &t->t_hold);
sp->pr_altstack.ss_sp =
(caddr32_t)(uintptr_t)lwp->lwp_sigaltstack.ss_sp;
sp->pr_altstack.ss_size = (size32_t)lwp->lwp_sigaltstack.ss_size;
sp->pr_altstack.ss_flags = (int32_t)lwp->lwp_sigaltstack.ss_flags;
prgetaction32(p, up, lwp->lwp_cursig, &sp->pr_action);
sp->pr_pid = p->p_pid;
if (curproc->p_zone->zone_id != GLOBAL_ZONEID &&
(p->p_flag & SZONETOP)) {
ASSERT(p->p_zone->zone_id != GLOBAL_ZONEID);
/*
* Inside local zones, fake zsched's pid as parent pids for
* processes which reference processes outside of the zone.
*/
sp->pr_ppid = curproc->p_zone->zone_zsched->p_pid;
} else {
sp->pr_ppid = p->p_ppid;
}
sp->pr_pgrp = p->p_pgrp;
sp->pr_sid = p->p_sessp->s_sid;
hrt2ts32(mstate_aggr_state(p, LMS_USER), &sp->pr_utime);
hrt2ts32(mstate_aggr_state(p, LMS_SYSTEM), &sp->pr_stime);
TICK_TO_TIMESTRUC32(p->p_cutime, &sp->pr_cutime);
TICK_TO_TIMESTRUC32(p->p_cstime, &sp->pr_cstime);
(void) strncpy(sp->pr_clname, sclass[t->t_cid].cl_name,
sizeof (sp->pr_clname) - 1);
sp->pr_who = t->t_tid;
sp->pr_nlwp = p->p_lwpcnt;
sp->pr_brkbase = (caddr32_t)(uintptr_t)p->p_brkbase;
sp->pr_brksize = (size32_t)p->p_brksize;
sp->pr_stkbase = (caddr32_t)(uintptr_t)prgetstackbase(p);
sp->pr_stksize = (size32_t)p->p_stksize;
sp->pr_oldcontext = (caddr32_t)lwp->lwp_oldcontext;
sp->pr_processor = t->t_cpu->cpu_id;
sp->pr_bind = t->t_bind_cpu;
/*
* Fetch the current instruction, if not a system process.
* We don't attempt this unless the lwp is stopped.
*/
if ((p->p_flag & SSYS) || p->p_as == &kas)
sp->pr_flags |= (PR_ISSYS|PR_PCINVAL);
else if (!(flags & PR_STOPPED))
sp->pr_flags |= PR_PCINVAL;
else if (!prfetchinstr(lwp, &instr))
sp->pr_flags |= PR_PCINVAL;
else
sp->pr_instr = (uint32_t)instr;
/*
* Drop p_lock while touching the lwp's stack.
*/
mutex_exit(&p->p_lock);
if (prisstep(lwp))
sp->pr_flags |= PR_STEP;
if ((flags & (PR_STOPPED|PR_ASLEEP)) && t->t_sysnum) {
int i;
auxv_t *auxp;
sp->pr_syscall = get_syscall32_args(lwp,
(int *)sp->pr_sysarg, &i);
sp->pr_nsysarg = (short)i;
if (t->t_whystop == PR_SYSEXIT &&
(t->t_sysnum == SYS_exec || t->t_sysnum == SYS_execve)) {
sp->pr_sysarg[0] = 0;
sp->pr_sysarg[1] = (caddr32_t)up->u_argv;
sp->pr_sysarg[2] = (caddr32_t)up->u_envp;
for (i = 0, auxp = up->u_auxv;
i < sizeof (up->u_auxv) / sizeof (up->u_auxv[0]);
i++, auxp++) {
if (auxp->a_type == AT_SUN_EXECNAME) {
sp->pr_sysarg[0] =
(caddr32_t)
(uintptr_t)auxp->a_un.a_ptr;
break;
}
}
}
}
if ((flags & PR_STOPPED) || t == curthread)
prgetprregs32(lwp, sp->pr_reg);
mutex_enter(&p->p_lock);
}
void
oprgetpsinfo32(proc_t *p, prpsinfo32_t *psp, kthread_t *tp)
{
kthread_t *t;
char c, state;
user_t *up;
dev_t d;
uint64_t pct;
int retval, niceval;
cred_t *cred;
struct as *as;
hrtime_t hrutime, hrstime, cur_time;
ASSERT(MUTEX_HELD(&p->p_lock));
bzero(psp, sizeof (*psp));
if ((t = tp) == NULL)
t = prchoose(p); /* returns locked thread */
else
thread_lock(t);
/* kludge: map thread state enum into process state enum */
if (t == NULL) {
state = TS_ZOMB;
} else {
state = VSTOPPED(t) ? TS_STOPPED : t->t_state;
thread_unlock(t);
}
switch (state) {
case TS_SLEEP: state = SSLEEP; break;
case TS_RUN: state = SRUN; break;
case TS_ONPROC: state = SONPROC; break;
case TS_ZOMB: state = SZOMB; break;
case TS_STOPPED: state = SSTOP; break;
default: state = 0; break;
}
switch (state) {
case SSLEEP: c = 'S'; break;
case SRUN: c = 'R'; break;
case SZOMB: c = 'Z'; break;
case SSTOP: c = 'T'; break;
case SIDL: c = 'I'; break;
case SONPROC: c = 'O'; break;
#ifdef SXBRK
case SXBRK: c = 'X'; break;
#endif
default: c = '?'; break;
}
psp->pr_state = state;
psp->pr_sname = c;
psp->pr_zomb = (state == SZOMB);
/*
* only export SSYS and SMSACCT; everything else is off-limits to
* userland apps.
*/
psp->pr_flag = p->p_flag & (SSYS | SMSACCT);
mutex_enter(&p->p_crlock);
cred = p->p_cred;
psp->pr_uid = crgetruid(cred);
psp->pr_gid = crgetrgid(cred);
psp->pr_euid = crgetuid(cred);
psp->pr_egid = crgetgid(cred);
mutex_exit(&p->p_crlock);
psp->pr_pid = p->p_pid;
if (curproc->p_zone->zone_id != GLOBAL_ZONEID &&
(p->p_flag & SZONETOP)) {
ASSERT(p->p_zone->zone_id != GLOBAL_ZONEID);
/*
* Inside local zones, fake zsched's pid as parent pids for
* processes which reference processes outside of the zone.
*/
psp->pr_ppid = curproc->p_zone->zone_zsched->p_pid;
} else {
psp->pr_ppid = p->p_ppid;
}
psp->pr_pgrp = p->p_pgrp;
psp->pr_sid = p->p_sessp->s_sid;
psp->pr_addr = 0; /* cannot represent 64-bit addr in 32 bits */
hrutime = mstate_aggr_state(p, LMS_USER);
hrstime = mstate_aggr_state(p, LMS_SYSTEM);
hrt2ts32(hrutime + hrstime, &psp->pr_time);
TICK_TO_TIMESTRUC32(p->p_cutime + p->p_cstime, &psp->pr_ctime);
switch (p->p_model) {
case DATAMODEL_ILP32:
psp->pr_dmodel = PR_MODEL_ILP32;
break;
case DATAMODEL_LP64:
psp->pr_dmodel = PR_MODEL_LP64;
break;
}
if (state == SZOMB || t == NULL) {
int wcode = p->p_wcode; /* must be atomic read */
if (wcode)
psp->pr_wstat = wstat(wcode, p->p_wdata);
psp->pr_lttydev = PRNODEV32;
psp->pr_ottydev = (o_dev_t)PRNODEV32;
psp->pr_size = 0;
psp->pr_rssize = 0;
psp->pr_pctmem = 0;
} else {
up = PTOU(p);
psp->pr_wchan = 0; /* cannot represent in 32 bits */
psp->pr_pri = t->t_pri;
(void) strncpy(psp->pr_clname, sclass[t->t_cid].cl_name,
sizeof (psp->pr_clname) - 1);
retval = CL_DONICE(t, NULL, 0, &niceval);
if (retval == 0) {
psp->pr_oldpri = v.v_maxsyspri - psp->pr_pri;
psp->pr_nice = niceval + NZERO;
} else {
psp->pr_oldpri = 0;
psp->pr_nice = 0;
}
d = cttydev(p);
#ifdef sun
{
extern dev_t rwsconsdev, rconsdev, uconsdev;
/*
* If the controlling terminal is the real
* or workstation console device, map to what the
* user thinks is the console device. Handle case when
* rwsconsdev or rconsdev is set to NODEV for Starfire.
*/
if ((d == rwsconsdev || d == rconsdev) && d != NODEV)
d = uconsdev;
}
#endif
(void) cmpldev(&psp->pr_lttydev, d);
psp->pr_ottydev = cmpdev(d);
TIMESPEC_TO_TIMESPEC32(&psp->pr_start, &up->u_start);
bcopy(up->u_comm, psp->pr_fname,
MIN(sizeof (up->u_comm), sizeof (psp->pr_fname)-1));
bcopy(up->u_psargs, psp->pr_psargs,
MIN(PRARGSZ-1, PSARGSZ));
psp->pr_syscall = t->t_sysnum;
psp->pr_argc = up->u_argc;
psp->pr_argv = (caddr32_t)up->u_argv;
psp->pr_envp = (caddr32_t)up->u_envp;
/* compute %cpu for the lwp or process */
pct = 0;
if ((t = tp) == NULL)
t = p->p_tlist;
cur_time = gethrtime_unscaled();
do {
pct += cpu_update_pct(t, cur_time);
if (tp != NULL) /* just do the one lwp */
break;
} while ((t = t->t_forw) != p->p_tlist);
psp->pr_pctcpu = prgetpctcpu(pct);
psp->pr_cpu = (psp->pr_pctcpu*100 + 0x6000) >> 15; /* [0..99] */
if (psp->pr_cpu > 99)
psp->pr_cpu = 99;
if ((p->p_flag & SSYS) || (as = p->p_as) == &kas) {
psp->pr_size = 0;
psp->pr_rssize = 0;
psp->pr_pctmem = 0;
} else {
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_READER);
psp->pr_size = (size32_t)btopr(as->a_resvsize);
psp->pr_rssize = (size32_t)rm_asrss(as);
psp->pr_pctmem = rm_pctmemory(as);
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
}
}
psp->pr_bysize = (size32_t)ptob(psp->pr_size);
psp->pr_byrssize = (size32_t)ptob(psp->pr_rssize);
/*
* If we are looking at an LP64 process, zero out
* the fields that cannot be represented in ILP32.
*/
if (p->p_model != DATAMODEL_ILP32) {
psp->pr_size = 0;
psp->pr_rssize = 0;
psp->pr_bysize = 0;
psp->pr_byrssize = 0;
psp->pr_argv = 0;
psp->pr_envp = 0;
}
}
/*ARGSUSED*/
static int
prioctl32(
struct vnode *vp,
int cmd,
intptr_t arg,
int flag,
cred_t *cr,
int *rvalp,
caller_context_t *ct)
{
caddr_t cmaddr = (caddr_t)arg;
proc_t *p;
user_t *up;
kthread_t *t;
klwp_t *lwp;
prnode_t *pnp = VTOP(vp);
prcommon_t *pcp;
prnode_t *xpnp = NULL;
int error;
int zdisp;
void *thing = NULL;
size_t thingsize = 0;
/*
* For copyin()/copyout().
*/
union {
caddr32_t va;
int signo;
int nice;
uint_t lwpid;
int32_t flags;
prstatus32_t prstat;
prrun32_t prrun;
sigset_t smask;
siginfo32_t info;
sysset_t prmask;
prgregset32_t regs;
prfpregset32_t fpregs;
prpsinfo32_t prps;
sigset_t holdmask;
fltset_t fltmask;
prcred_t prcred;
prusage32_t prusage;
prhusage_t prhusage;
ioc_prmap32_t prmap;
auxv32_t auxv[__KERN_NAUXV_IMPL];
} un32;
/*
* Native objects for internal use.
*/
union {
caddr_t va;
int signo;
int nice;
uint_t lwpid;
long flags;
prstatus_t prstat;
prrun_t prrun;
sigset_t smask;
siginfo_t info;
sysset_t prmask;
prgregset_t regs;
prpsinfo_t prps;
sigset_t holdmask;
fltset_t fltmask;
prcred_t prcred;
prusage_t prusage;
prhusage_t prhusage;
auxv_t auxv[__KERN_NAUXV_IMPL];
} un;
if (pnp->pr_type == PR_TMPL)
return (prctioctl(pnp, cmd, arg, flag, cr));
/*
* Support for old /proc interface.
*/
if (pnp->pr_pidfile != NULL) {
ASSERT(pnp->pr_type == PR_PIDDIR);
vp = pnp->pr_pidfile;
pnp = VTOP(vp);
ASSERT(pnp->pr_type == PR_PIDFILE);
}
if (pnp->pr_type != PR_PIDFILE && pnp->pr_type != PR_LWPIDFILE)
return (ENOTTY);
/*
* Fail ioctls which are logically "write" requests unless
* the user has write permission.
*/
if ((flag & FWRITE) == 0 && isprwrioctl(cmd))
return (EBADF);
/*
* Perform any necessary copyin() operations before
* locking the process. Helps avoid deadlocks and
* improves performance.
*
* Also, detect invalid ioctl codes here to avoid
* locking a process unnnecessarily.
*
* Also, prepare to allocate space that will be needed below,
* case by case.
*/
error = 0;
switch (cmd) {
case PIOCGETPR:
thingsize = sizeof (proc_t);
break;
case PIOCGETU:
thingsize = sizeof (user_t);
break;
case PIOCSTOP:
case PIOCWSTOP:
case PIOCLWPIDS:
case PIOCGTRACE:
case PIOCGENTRY:
case PIOCGEXIT:
case PIOCSRLC:
case PIOCRRLC:
case PIOCSFORK:
case PIOCRFORK:
case PIOCGREG:
case PIOCGFPREG:
case PIOCSTATUS:
case PIOCLSTATUS:
case PIOCPSINFO:
case PIOCMAXSIG:
case PIOCGXREGSIZE:
break;
case PIOCSXREG: /* set extra registers */
case PIOCGXREG: /* get extra registers */
#if defined(__sparc)
thingsize = sizeof (prxregset_t);
#else
thingsize = 0;
#endif
break;
case PIOCACTION:
thingsize = (NSIG-1) * sizeof (struct sigaction32);
break;
case PIOCGHOLD:
case PIOCNMAP:
case PIOCMAP:
case PIOCGFAULT:
case PIOCCFAULT:
case PIOCCRED:
case PIOCGROUPS:
case PIOCUSAGE:
case PIOCLUSAGE:
break;
case PIOCOPENPD:
/*
* We will need this below.
* Allocate it now, before locking the process.
*/
xpnp = prgetnode(vp, PR_OPAGEDATA);
break;
case PIOCNAUXV:
case PIOCAUXV:
break;
#if defined(__i386) || defined(__i386_COMPAT)
case PIOCNLDT:
case PIOCLDT:
break;
#endif /* __i386 || __i386_COMPAT */
#if defined(__sparc)
case PIOCGWIN:
thingsize = sizeof (gwindows32_t);
break;
#endif /* __sparc */
case PIOCOPENM: /* open mapped object for reading */
if (cmaddr == NULL)
un32.va = NULL;
else if (copyin(cmaddr, &un32.va, sizeof (un32.va)))
error = EFAULT;
break;
case PIOCRUN: /* make lwp or process runnable */
if (cmaddr == NULL)
un32.prrun.pr_flags = 0;
else if (copyin(cmaddr, &un32.prrun, sizeof (un32.prrun)))
error = EFAULT;
break;
case PIOCOPENLWP: /* return /proc lwp file descriptor */
if (copyin(cmaddr, &un32.lwpid, sizeof (un32.lwpid)))
error = EFAULT;
break;
case PIOCSTRACE: /* set signal trace mask */
if (copyin(cmaddr, &un32.smask, sizeof (un32.smask)))
error = EFAULT;
break;
case PIOCSSIG: /* set current signal */
if (cmaddr == NULL)
un32.info.si_signo = 0;
else if (copyin(cmaddr, &un32.info, sizeof (un32.info)))
error = EFAULT;
break;
case PIOCKILL: /* send signal */
case PIOCUNKILL: /* delete a signal */
if (copyin(cmaddr, &un32.signo, sizeof (un32.signo)))
error = EFAULT;
break;
case PIOCNICE: /* set nice priority */
if (copyin(cmaddr, &un32.nice, sizeof (un32.nice)))
error = EFAULT;
break;
case PIOCSENTRY: /* set syscall entry bit mask */
case PIOCSEXIT: /* set syscall exit bit mask */
if (copyin(cmaddr, &un32.prmask, sizeof (un32.prmask)))
error = EFAULT;
break;
case PIOCSET: /* set process flags */
case PIOCRESET: /* reset process flags */
if (copyin(cmaddr, &un32.flags, sizeof (un32.flags)))
error = EFAULT;
break;
case PIOCSREG: /* set general registers */
if (copyin(cmaddr, un32.regs, sizeof (un32.regs)))
error = EFAULT;
break;
case PIOCSFPREG: /* set floating-point registers */
if (copyin(cmaddr, &un32.fpregs, sizeof (un32.fpregs)))
error = EFAULT;
break;
case PIOCSHOLD: /* set signal-hold mask */
if (copyin(cmaddr, &un32.holdmask, sizeof (un32.holdmask)))
error = EFAULT;
break;
case PIOCSFAULT: /* set mask of traced faults */
if (copyin(cmaddr, &un32.fltmask, sizeof (un32.fltmask)))
error = EFAULT;
break;
default:
error = EINVAL;
break;
}
if (error)
return (error);
startover:
/*
* If we need kmem_alloc()d space then we allocate it now, before
* grabbing the process lock. Using kmem_alloc(KM_SLEEP) while
* holding the process lock leads to deadlock with the clock thread.
* (The clock thread wakes up the pageout daemon to free up space.
* If the clock thread blocks behind us and we are sleeping waiting
* for space, then space may never become available.)
*/
if (thingsize) {
ASSERT(thing == NULL);
thing = kmem_alloc(thingsize, KM_SLEEP);
}
switch (cmd) {
case PIOCPSINFO:
case PIOCGETPR:
case PIOCUSAGE:
case PIOCLUSAGE:
zdisp = ZYES;
break;
case PIOCSXREG: /* set extra registers */
/*
* perform copyin before grabbing the process lock
*/
if (thing) {
if (copyin(cmaddr, thing, thingsize)) {
kmem_free(thing, thingsize);
return (EFAULT);
}
}
/* fall through... */
default:
zdisp = ZNO;
break;
}
if ((error = prlock(pnp, zdisp)) != 0) {
if (thing != NULL)
kmem_free(thing, thingsize);
if (xpnp)
prfreenode(xpnp);
return (error);
}
pcp = pnp->pr_common;
p = pcp->prc_proc;
ASSERT(p != NULL);
/*
* Choose a thread/lwp for the operation.
*/
if (zdisp == ZNO && cmd != PIOCSTOP && cmd != PIOCWSTOP) {
if (pnp->pr_type == PR_LWPIDFILE && cmd != PIOCLSTATUS) {
t = pcp->prc_thread;
ASSERT(t != NULL);
} else {
t = prchoose(p); /* returns locked thread */
ASSERT(t != NULL);
thread_unlock(t);
}
lwp = ttolwp(t);
}
error = 0;
switch (cmd) {
case PIOCGETPR: /* read struct proc */
{
proc_t *prp = thing;
*prp = *p;
prunlock(pnp);
if (copyout(prp, cmaddr, sizeof (proc_t)))
error = EFAULT;
kmem_free(prp, sizeof (proc_t));
thing = NULL;
break;
}
case PIOCGETU: /* read u-area */
{
user_t *userp = thing;
up = PTOU(p);
*userp = *up;
prunlock(pnp);
if (copyout(userp, cmaddr, sizeof (user_t)))
error = EFAULT;
kmem_free(userp, sizeof (user_t));
thing = NULL;
break;
}
case PIOCOPENM: /* open mapped object for reading */
if (PROCESS_NOT_32BIT(p) && cmaddr != NULL) {
prunlock(pnp);
error = EOVERFLOW;
break;
}
error = propenm(pnp, cmaddr,
(caddr_t)(uintptr_t)un32.va, rvalp, cr);
/* propenm() called prunlock(pnp) */
break;
case PIOCSTOP: /* stop process or lwp from running */
case PIOCWSTOP: /* wait for process or lwp to stop */
/*
* Can't apply to a system process.
*/
if ((p->p_flag & SSYS) || p->p_as == &kas) {
prunlock(pnp);
error = EBUSY;
break;
}
if (cmd == PIOCSTOP)
pr_stop(pnp);
/*
* If an lwp is waiting for itself or its process, don't wait.
* The lwp will never see the fact that itself is stopped.
*/
if ((pnp->pr_type == PR_LWPIDFILE)?
(pcp->prc_thread == curthread) : (p == curproc)) {
if (cmd == PIOCWSTOP)
error = EBUSY;
prunlock(pnp);
break;
}
if ((error = pr_wait_stop(pnp, (time_t)0)) != 0)
break; /* pr_wait_stop() unlocked the process */
if (cmaddr == NULL)
prunlock(pnp);
else if (PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
error = EOVERFLOW;
} else {
/*
* Return process/lwp status information.
*/
t = pr_thread(pnp); /* returns locked thread */
thread_unlock(t);
oprgetstatus32(t, &un32.prstat, VTOZONE(vp));
prunlock(pnp);
if (copyout(&un32.prstat, cmaddr, sizeof (un32.prstat)))
error = EFAULT;
}
break;
case PIOCRUN: /* make lwp or process runnable */
{
long flags = un32.prrun.pr_flags;
/*
* Cannot set an lwp running is it is not stopped.
* Also, no lwp other than the /proc agent lwp can
* be set running so long as the /proc agent lwp exists.
*/
if ((!ISTOPPED(t) && !VSTOPPED(t) &&
!(t->t_proc_flag & TP_PRSTOP)) ||
(p->p_agenttp != NULL &&
(t != p->p_agenttp || pnp->pr_type != PR_LWPIDFILE))) {
prunlock(pnp);
error = EBUSY;
break;
}
if ((flags & PRSVADDR) && PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
error = EOVERFLOW;
break;
}
if (flags & (PRSHOLD|PRSTRACE|PRSFAULT|PRSVADDR)) {
un.prrun.pr_flags = (int)flags;
un.prrun.pr_trace = un32.prrun.pr_trace;
un.prrun.pr_sighold = un32.prrun.pr_sighold;
un.prrun.pr_fault = un32.prrun.pr_fault;
un.prrun.pr_vaddr =
(caddr_t)(uintptr_t)un32.prrun.pr_vaddr;
prsetrun(t, &un.prrun);
}
error = pr_setrun(pnp, prmaprunflags(flags));
prunlock(pnp);
break;
}
case PIOCLWPIDS: /* get array of lwp identifiers */
{
int nlwp;
int Nlwp;
id_t *idp;
id_t *Bidp;
Nlwp = nlwp = p->p_lwpcnt;
if (thing && thingsize != (Nlwp+1) * sizeof (id_t)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = (Nlwp+1) * sizeof (id_t);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
prunlock(pnp);
goto startover;
}
idp = thing;
thing = NULL;
Bidp = idp;
if ((t = p->p_tlist) != NULL) {
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
ASSERT(nlwp > 0);
--nlwp;
*idp++ = t->t_tid;
} while ((t = t->t_forw) != p->p_tlist);
}
*idp = 0;
ASSERT(nlwp == 0);
prunlock(pnp);
if (copyout(Bidp, cmaddr, (Nlwp+1) * sizeof (id_t)))
error = EFAULT;
kmem_free(Bidp, (Nlwp+1) * sizeof (id_t));
break;
}
case PIOCOPENLWP: /* return /proc lwp file descriptor */
{
vnode_t *xvp;
int n;
prunlock(pnp);
if ((xvp = prlwpnode(pnp, un32.lwpid)) == NULL)
error = ENOENT;
else if (error = fassign(&xvp, flag & (FREAD|FWRITE), &n)) {
VN_RELE(xvp);
} else
*rvalp = n;
break;
}
case PIOCOPENPD: /* return /proc page data file descriptor */
{
vnode_t *xvp = PTOV(xpnp);
vnode_t *dp = pnp->pr_parent;
int n;
if (PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
prfreenode(xpnp);
xpnp = NULL;
error = EOVERFLOW;
break;
}
if (pnp->pr_type == PR_LWPIDFILE) {
dp = VTOP(dp)->pr_parent;
dp = VTOP(dp)->pr_parent;
}
ASSERT(VTOP(dp)->pr_type == PR_PIDDIR);
VN_HOLD(dp);
pcp = pnp->pr_pcommon;
xpnp->pr_ino = ptoi(pcp->prc_pid);
xpnp->pr_common = pcp;
xpnp->pr_pcommon = pcp;
xpnp->pr_parent = dp;
xpnp->pr_next = p->p_plist;
p->p_plist = xvp;
prunlock(pnp);
if (error = fassign(&xvp, FREAD, &n)) {
VN_RELE(xvp);
} else
*rvalp = n;
xpnp = NULL;
break;
}
case PIOCGTRACE: /* get signal trace mask */
prassignset(&un32.smask, &p->p_sigmask);
prunlock(pnp);
if (copyout(&un32.smask, cmaddr, sizeof (un32.smask)))
error = EFAULT;
break;
case PIOCSTRACE: /* set signal trace mask */
prdelset(&un32.smask, SIGKILL);
prassignset(&p->p_sigmask, &un32.smask);
if (!sigisempty(&p->p_sigmask))
p->p_proc_flag |= P_PR_TRACE;
else if (prisempty(&p->p_fltmask)) {
up = PTOU(p);
if (up->u_systrap == 0)
p->p_proc_flag &= ~P_PR_TRACE;
}
prunlock(pnp);
break;
case PIOCSSIG: /* set current signal */
if (un32.info.si_signo != 0 && PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
error = EOVERFLOW;
} else {
bzero(&un.info, sizeof (un.info));
siginfo_32tok(&un32.info, (k_siginfo_t *)&un.info);
error = pr_setsig(pnp, &un.info);
prunlock(pnp);
if (un32.info.si_signo == SIGKILL && error == 0)
pr_wait_die(pnp);
}
break;
case PIOCKILL: /* send signal */
error = pr_kill(pnp, un32.signo, cr);
prunlock(pnp);
if (un32.signo == SIGKILL && error == 0)
pr_wait_die(pnp);
break;
case PIOCUNKILL: /* delete a signal */
error = pr_unkill(pnp, un32.signo);
prunlock(pnp);
break;
case PIOCNICE: /* set nice priority */
error = pr_nice(p, un32.nice, cr);
prunlock(pnp);
break;
case PIOCGENTRY: /* get syscall entry bit mask */
case PIOCGEXIT: /* get syscall exit bit mask */
up = PTOU(p);
if (cmd == PIOCGENTRY) {
prassignset(&un32.prmask, &up->u_entrymask);
} else {
prassignset(&un32.prmask, &up->u_exitmask);
}
prunlock(pnp);
if (copyout(&un32.prmask, cmaddr, sizeof (un32.prmask)))
error = EFAULT;
break;
case PIOCSENTRY: /* set syscall entry bit mask */
case PIOCSEXIT: /* set syscall exit bit mask */
pr_setentryexit(p, &un32.prmask, cmd == PIOCSENTRY);
prunlock(pnp);
break;
case PIOCSRLC: /* obsolete: set running on last /proc close */
error = pr_set(p, prmapsetflags(PR_RLC));
prunlock(pnp);
break;
case PIOCRRLC: /* obsolete: reset run-on-last-close flag */
error = pr_unset(p, prmapsetflags(PR_RLC));
prunlock(pnp);
break;
case PIOCSFORK: /* obsolete: set inherit-on-fork flag */
error = pr_set(p, prmapsetflags(PR_FORK));
prunlock(pnp);
break;
case PIOCRFORK: /* obsolete: reset inherit-on-fork flag */
error = pr_unset(p, prmapsetflags(PR_FORK));
prunlock(pnp);
break;
case PIOCSET: /* set process flags */
error = pr_set(p, prmapsetflags((long)un32.flags));
prunlock(pnp);
break;
case PIOCRESET: /* reset process flags */
error = pr_unset(p, prmapsetflags((long)un32.flags));
prunlock(pnp);
break;
case PIOCGREG: /* get general registers */
if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else if (t->t_state != TS_STOPPED && !VSTOPPED(t))
bzero(un32.regs, sizeof (un32.regs));
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prgetprregs32(lwp, un32.regs);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (error == 0 &&
copyout(un32.regs, cmaddr, sizeof (un32.regs)))
error = EFAULT;
break;
case PIOCSREG: /* set general registers */
if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else if (!ISTOPPED(t) && !VSTOPPED(t) && !DSTOPPED(t))
error = EBUSY;
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prgregset_32ton(lwp, un32.regs, un.regs);
prsetprregs(lwp, un.regs, 0);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
break;
case PIOCGFPREG: /* get floating-point registers */
if (!prhasfp())
error = EINVAL; /* No FP support */
else if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else if (t->t_state != TS_STOPPED && !VSTOPPED(t))
bzero(&un32.fpregs, sizeof (un32.fpregs));
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prgetprfpregs32(lwp, &un32.fpregs);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (error == 0 &&
copyout(&un32.fpregs, cmaddr, sizeof (un32.fpregs)))
error = EFAULT;
break;
case PIOCSFPREG: /* set floating-point registers */
if (!prhasfp())
error = EINVAL; /* No FP support */
else if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else if (!ISTOPPED(t) && !VSTOPPED(t) && !DSTOPPED(t))
error = EBUSY;
else {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prsetprfpregs32(lwp, &un32.fpregs);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
break;
case PIOCGXREGSIZE: /* get the size of the extra registers */
{
int xregsize;
if (prhasx(p)) {
xregsize = prgetprxregsize(p);
prunlock(pnp);
if (copyout(&xregsize, cmaddr, sizeof (xregsize)))
error = EFAULT;
} else {
prunlock(pnp);
error = EINVAL; /* No extra register support */
}
break;
}
case PIOCGXREG: /* get extra registers */
if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else if (!prhasx(p))
error = EINVAL; /* No extra register support */
else {
bzero(thing, thingsize);
if (t->t_state == TS_STOPPED || VSTOPPED(t)) {
/* drop p_lock to touch the stack */
mutex_exit(&p->p_lock);
prgetprxregs(lwp, thing);
mutex_enter(&p->p_lock);
}
}
prunlock(pnp);
if (error == 0 &&
copyout(thing, cmaddr, thingsize))
error = EFAULT;
if (thing) {
kmem_free(thing, thingsize);
thing = NULL;
}
break;
case PIOCSXREG: /* set extra registers */
if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else if (!ISTOPPED(t) && !VSTOPPED(t) && !DSTOPPED(t))
error = EBUSY;
else if (!prhasx(p))
error = EINVAL; /* No extra register support */
else if (thing) {
/* drop p_lock while touching the lwp's stack */
mutex_exit(&p->p_lock);
prsetprxregs(lwp, thing);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (thing) {
kmem_free(thing, thingsize);
thing = NULL;
}
break;
case PIOCSTATUS: /* get process/lwp status */
if (PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
error = EOVERFLOW;
break;
}
oprgetstatus32(t, &un32.prstat, VTOZONE(vp));
prunlock(pnp);
if (copyout(&un32.prstat, cmaddr, sizeof (un32.prstat)))
error = EFAULT;
break;
case PIOCLSTATUS: /* get status for process & all lwps */
{
int Nlwp;
int nlwp;
prstatus32_t *Bprsp;
prstatus32_t *prsp;
if (PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
if (thing) {
kmem_free(thing, thingsize);
thing = NULL;
}
error = EOVERFLOW;
break;
}
nlwp = Nlwp = p->p_lwpcnt;
if (thing && thingsize != (Nlwp+1) * sizeof (prstatus32_t)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = (Nlwp+1) * sizeof (prstatus32_t);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
prunlock(pnp);
goto startover;
}
Bprsp = (prstatus32_t *)thing;
thing = NULL;
prsp = Bprsp;
oprgetstatus32(t, prsp, VTOZONE(vp));
t = p->p_tlist;
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
ASSERT(nlwp > 0);
--nlwp;
oprgetstatus32(t, ++prsp, VTOZONE(vp));
} while ((t = t->t_forw) != p->p_tlist);
ASSERT(nlwp == 0);
prunlock(pnp);
if (copyout(Bprsp, cmaddr, (Nlwp+1) * sizeof (prstatus32_t)))
error = EFAULT;
kmem_free(Bprsp, (Nlwp + 1) * sizeof (prstatus32_t));
break;
}
case PIOCPSINFO: /* get ps(1) information */
{
prpsinfo32_t *psp = &un32.prps;
oprgetpsinfo32(p, psp,
(pnp->pr_type == PR_LWPIDFILE)? pcp->prc_thread : NULL);
prunlock(pnp);
if (copyout(&un32.prps, cmaddr, sizeof (un32.prps)))
error = EFAULT;
break;
}
case PIOCMAXSIG: /* get maximum signal number */
{
int n = NSIG-1;
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (int)))
error = EFAULT;
break;
}
case PIOCACTION: /* get signal action structures */
{
uint_t sig;
struct sigaction32 *sap = thing;
if (PROCESS_NOT_32BIT(p))
error = EOVERFLOW;
else {
up = PTOU(p);
for (sig = 1; sig < NSIG; sig++)
prgetaction32(p, up, sig, &sap[sig-1]);
}
prunlock(pnp);
if (error == 0 &&
copyout(sap, cmaddr, (NSIG-1)*sizeof (struct sigaction32)))
error = EFAULT;
kmem_free(sap, (NSIG-1)*sizeof (struct sigaction32));
thing = NULL;
break;
}
case PIOCGHOLD: /* get signal-hold mask */
schedctl_finish_sigblock(t);
sigktou(&t->t_hold, &un32.holdmask);
prunlock(pnp);
if (copyout(&un32.holdmask, cmaddr, sizeof (un32.holdmask)))
error = EFAULT;
break;
case PIOCSHOLD: /* set signal-hold mask */
pr_sethold(pnp, &un32.holdmask);
prunlock(pnp);
break;
case PIOCNMAP: /* get number of memory mappings */
{
int n;
struct as *as = p->p_as;
if ((p->p_flag & SSYS) || as == &kas)
n = 0;
else {
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
n = prnsegs(as, 0);
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
}
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (int)))
error = EFAULT;
break;
}
case PIOCMAP: /* get memory map information */
{
list_t iolhead;
struct as *as = p->p_as;
if ((p->p_flag & SSYS) || as == &kas) {
error = 0;
prunlock(pnp);
} else if (PROCESS_NOT_32BIT(p)) {
error = EOVERFLOW;
prunlock(pnp);
} else {
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
error = oprgetmap32(p, &iolhead);
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
prunlock(pnp);
error = pr_iol_copyout_and_free(&iolhead,
&cmaddr, error);
}
/*
* The procfs PIOCMAP ioctl returns an all-zero buffer
* to indicate the end of the prmap[] array.
* Append it to whatever has already been copied out.
*/
bzero(&un32.prmap, sizeof (un32.prmap));
if (!error &&
copyout(&un32.prmap, cmaddr, sizeof (un32.prmap)))
error = EFAULT;
break;
}
case PIOCGFAULT: /* get mask of traced faults */
prassignset(&un32.fltmask, &p->p_fltmask);
prunlock(pnp);
if (copyout(&un32.fltmask, cmaddr, sizeof (un32.fltmask)))
error = EFAULT;
break;
case PIOCSFAULT: /* set mask of traced faults */
pr_setfault(p, &un32.fltmask);
prunlock(pnp);
break;
case PIOCCFAULT: /* clear current fault */
lwp->lwp_curflt = 0;
prunlock(pnp);
break;
case PIOCCRED: /* get process credentials */
{
cred_t *cp;
mutex_enter(&p->p_crlock);
cp = p->p_cred;
un32.prcred.pr_euid = crgetuid(cp);
un32.prcred.pr_ruid = crgetruid(cp);
un32.prcred.pr_suid = crgetsuid(cp);
un32.prcred.pr_egid = crgetgid(cp);
un32.prcred.pr_rgid = crgetrgid(cp);
un32.prcred.pr_sgid = crgetsgid(cp);
un32.prcred.pr_ngroups = crgetngroups(cp);
mutex_exit(&p->p_crlock);
prunlock(pnp);
if (copyout(&un32.prcred, cmaddr, sizeof (un32.prcred)))
error = EFAULT;
break;
}
case PIOCGROUPS: /* get supplementary groups */
{
cred_t *cp;
mutex_enter(&p->p_crlock);
cp = p->p_cred;
crhold(cp);
mutex_exit(&p->p_crlock);
prunlock(pnp);
if (copyout(crgetgroups(cp), cmaddr,
MAX(crgetngroups(cp), 1) * sizeof (gid_t)))
error = EFAULT;
crfree(cp);
break;
}
case PIOCUSAGE: /* get usage info */
{
/*
* For an lwp file descriptor, return just the lwp usage.
* For a process file descriptor, return total usage,
* all current lwps plus all defunct lwps.
*/
prhusage_t *pup = &un32.prhusage;
prusage32_t *upup;
bzero(pup, sizeof (*pup));
pup->pr_tstamp = gethrtime();
if (pnp->pr_type == PR_LWPIDFILE) {
t = pcp->prc_thread;
if (t != NULL)
prgetusage(t, pup);
else
error = ENOENT;
} else {
pup->pr_count = p->p_defunct;
pup->pr_create = p->p_mstart;
pup->pr_term = p->p_mterm;
pup->pr_rtime = p->p_mlreal;
pup->pr_utime = p->p_acct[LMS_USER];
pup->pr_stime = p->p_acct[LMS_SYSTEM];
pup->pr_ttime = p->p_acct[LMS_TRAP];
pup->pr_tftime = p->p_acct[LMS_TFAULT];
pup->pr_dftime = p->p_acct[LMS_DFAULT];
pup->pr_kftime = p->p_acct[LMS_KFAULT];
pup->pr_ltime = p->p_acct[LMS_USER_LOCK];
pup->pr_slptime = p->p_acct[LMS_SLEEP];
pup->pr_wtime = p->p_acct[LMS_WAIT_CPU];
pup->pr_stoptime = p->p_acct[LMS_STOPPED];
pup->pr_minf = p->p_ru.minflt;
pup->pr_majf = p->p_ru.majflt;
pup->pr_nswap = p->p_ru.nswap;
pup->pr_inblk = p->p_ru.inblock;
pup->pr_oublk = p->p_ru.oublock;
pup->pr_msnd = p->p_ru.msgsnd;
pup->pr_mrcv = p->p_ru.msgrcv;
pup->pr_sigs = p->p_ru.nsignals;
pup->pr_vctx = p->p_ru.nvcsw;
pup->pr_ictx = p->p_ru.nivcsw;
pup->pr_sysc = p->p_ru.sysc;
pup->pr_ioch = p->p_ru.ioch;
/*
* Add the usage information for each active lwp.
*/
if ((t = p->p_tlist) != NULL &&
!(pcp->prc_flags & PRC_DESTROY)) {
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
pup->pr_count++;
praddusage(t, pup);
} while ((t = t->t_forw) != p->p_tlist);
}
}
prunlock(pnp);
upup = kmem_alloc(sizeof (*upup), KM_SLEEP);
prcvtusage32(pup, upup);
if (copyout(upup, cmaddr, sizeof (*upup)))
error = EFAULT;
kmem_free(upup, sizeof (*upup));
break;
}
case PIOCLUSAGE: /* get detailed usage info */
{
int Nlwp;
int nlwp;
prusage32_t *upup;
prusage32_t *Bupup;
prhusage_t *pup;
hrtime_t curtime;
nlwp = Nlwp = (pcp->prc_flags & PRC_DESTROY)? 0 : p->p_lwpcnt;
if (thing && thingsize !=
sizeof (prhusage_t) + (Nlwp+1) * sizeof (prusage32_t)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = sizeof (prhusage_t) +
(Nlwp+1) * sizeof (prusage32_t);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
prunlock(pnp);
goto startover;
}
pup = (prhusage_t *)thing;
upup = Bupup = (prusage32_t *)(pup + 1);
ASSERT(p == pcp->prc_proc);
curtime = gethrtime();
/*
* First the summation over defunct lwps.
*/
bzero(pup, sizeof (*pup));
pup->pr_count = p->p_defunct;
pup->pr_tstamp = curtime;
pup->pr_create = p->p_mstart;
pup->pr_term = p->p_mterm;
pup->pr_rtime = p->p_mlreal;
pup->pr_utime = p->p_acct[LMS_USER];
pup->pr_stime = p->p_acct[LMS_SYSTEM];
pup->pr_ttime = p->p_acct[LMS_TRAP];
pup->pr_tftime = p->p_acct[LMS_TFAULT];
pup->pr_dftime = p->p_acct[LMS_DFAULT];
pup->pr_kftime = p->p_acct[LMS_KFAULT];
pup->pr_ltime = p->p_acct[LMS_USER_LOCK];
pup->pr_slptime = p->p_acct[LMS_SLEEP];
pup->pr_wtime = p->p_acct[LMS_WAIT_CPU];
pup->pr_stoptime = p->p_acct[LMS_STOPPED];
pup->pr_minf = p->p_ru.minflt;
pup->pr_majf = p->p_ru.majflt;
pup->pr_nswap = p->p_ru.nswap;
pup->pr_inblk = p->p_ru.inblock;
pup->pr_oublk = p->p_ru.oublock;
pup->pr_msnd = p->p_ru.msgsnd;
pup->pr_mrcv = p->p_ru.msgrcv;
pup->pr_sigs = p->p_ru.nsignals;
pup->pr_vctx = p->p_ru.nvcsw;
pup->pr_ictx = p->p_ru.nivcsw;
pup->pr_sysc = p->p_ru.sysc;
pup->pr_ioch = p->p_ru.ioch;
prcvtusage32(pup, upup);
/*
* Fill one prusage struct for each active lwp.
*/
if ((t = p->p_tlist) != NULL &&
!(pcp->prc_flags & PRC_DESTROY)) {
do {
ASSERT(!(t->t_proc_flag & TP_LWPEXIT));
ASSERT(nlwp > 0);
--nlwp;
upup++;
prgetusage(t, pup);
prcvtusage32(pup, upup);
} while ((t = t->t_forw) != p->p_tlist);
}
ASSERT(nlwp == 0);
prunlock(pnp);
if (copyout(Bupup, cmaddr, (Nlwp+1) * sizeof (prusage32_t)))
error = EFAULT;
kmem_free(thing, thingsize);
thing = NULL;
break;
}
case PIOCNAUXV: /* get number of aux vector entries */
{
int n = __KERN_NAUXV_IMPL;
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (int)))
error = EFAULT;
break;
}
case PIOCAUXV: /* get aux vector (see sys/auxv.h) */
{
int i;
if (PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
error = EOVERFLOW;
} else {
up = PTOU(p);
for (i = 0; i < __KERN_NAUXV_IMPL; i++) {
un32.auxv[i].a_type = up->u_auxv[i].a_type;
un32.auxv[i].a_un.a_val =
(int32_t)up->u_auxv[i].a_un.a_val;
}
prunlock(pnp);
if (copyout(un32.auxv, cmaddr,
__KERN_NAUXV_IMPL * sizeof (auxv32_t)))
error = EFAULT;
}
break;
}
#if defined(__i386) || defined(__i386_COMPAT)
case PIOCNLDT: /* get number of LDT entries */
{
int n;
mutex_exit(&p->p_lock);
mutex_enter(&p->p_ldtlock);
n = prnldt(p);
mutex_exit(&p->p_ldtlock);
mutex_enter(&p->p_lock);
prunlock(pnp);
if (copyout(&n, cmaddr, sizeof (n)))
error = EFAULT;
break;
}
case PIOCLDT: /* get LDT entries */
{
struct ssd *ssd;
int n;
mutex_exit(&p->p_lock);
mutex_enter(&p->p_ldtlock);
n = prnldt(p);
if (thing && thingsize != (n+1) * sizeof (*ssd)) {
kmem_free(thing, thingsize);
thing = NULL;
}
if (thing == NULL) {
thingsize = (n+1) * sizeof (*ssd);
thing = kmem_alloc(thingsize, KM_NOSLEEP);
}
if (thing == NULL) {
mutex_exit(&p->p_ldtlock);
mutex_enter(&p->p_lock);
prunlock(pnp);
goto startover;
}
ssd = thing;
thing = NULL;
if (n != 0)
prgetldt(p, ssd);
mutex_exit(&p->p_ldtlock);
mutex_enter(&p->p_lock);
prunlock(pnp);
/* mark the end of the list with a null entry */
bzero(&ssd[n], sizeof (*ssd));
if (copyout(ssd, cmaddr, (n+1) * sizeof (*ssd)))
error = EFAULT;
kmem_free(ssd, (n+1) * sizeof (*ssd));
break;
}
#endif /* __i386 || __i386_COMPAT */
#if defined(__sparc)
case PIOCGWIN: /* get gwindows_t (see sys/reg.h) */
{
gwindows32_t *gwp = thing;
if (PROCESS_NOT_32BIT(p)) {
prunlock(pnp);
error = EOVERFLOW;
} else {
/* drop p->p_lock while touching the stack */
mutex_exit(&p->p_lock);
bzero(gwp, sizeof (*gwp));
prgetwindows32(lwp, gwp);
mutex_enter(&p->p_lock);
prunlock(pnp);
if (copyout(gwp, cmaddr, sizeof (*gwp)))
error = EFAULT;
}
kmem_free(gwp, sizeof (*gwp));
thing = NULL;
break;
}
#endif /* __sparc */
default:
prunlock(pnp);
error = EINVAL;
break;
}
ASSERT(thing == NULL);
ASSERT(xpnp == NULL);
return (error);
}
#endif /* _SYSCALL32_IMPL */
/*
* Distinguish "writeable" ioctl requests from others.
*/
static int
isprwrioctl(int cmd)
{
switch (cmd) {
case PIOCSTOP:
case PIOCRUN:
case PIOCSTRACE:
case PIOCSSIG:
case PIOCKILL:
case PIOCUNKILL:
case PIOCNICE:
case PIOCSENTRY:
case PIOCSEXIT:
case PIOCSRLC:
case PIOCRRLC:
case PIOCSREG:
case PIOCSFPREG:
case PIOCSXREG:
case PIOCSHOLD:
case PIOCSFAULT:
case PIOCCFAULT:
case PIOCSFORK:
case PIOCRFORK:
case PIOCSET:
case PIOCRESET:
return (1);
}
return (0);
}
/*
* Map the ioctl() interface run flags to the new interface run flags.
*/
static ulong_t
prmaprunflags(long flags)
{
ulong_t newflags = 0;
if (flags & PRCSIG)
newflags |= 0x01;
if (flags & PRCFAULT)
newflags |= 0x02;
if (flags & PRSTEP)
newflags |= 0x04;
if (flags & PRSABORT)
newflags |= 0x08;
if (flags & PRSTOP)
newflags |= 0x10;
return (newflags);
}
/*
* Map the ioctl() interface settable mode flags to the new interface flags.
*/
static long
prmapsetflags(long flags)
{
long newflags = 0;
#define ALLFLAGS \
(PR_FORK|PR_RLC|PR_KLC|PR_ASYNC|PR_BPTADJ|PR_MSACCT|PR_PCOMPAT)
if (flags & ~ALLFLAGS)
newflags = 0xffff; /* forces EINVAL */
if (flags & PR_FORK)
newflags |= (0x00100000 | 0x08000000);
if (flags & PR_RLC)
newflags |= 0x00200000;
if (flags & PR_KLC)
newflags |= 0x00400000;
if (flags & PR_ASYNC)
newflags |= 0x00800000;
if (flags & PR_MSACCT)
newflags |= 0x01000000;
if (flags & PR_BPTADJ)
newflags |= 0x02000000;
if (flags & PR_PCOMPAT)
newflags |= 0x04000000;
return (newflags);
}
/*
* Apply PIOCRUN options specific to the ioctl() interface.
*/
static void
prsetrun(kthread_t *t, prrun_t *prp)
{
proc_t *p = ttoproc(t);
klwp_t *lwp = ttolwp(t);
long flags = prp->pr_flags;
user_t *up = PTOU(p);
ASSERT(MUTEX_HELD(&p->p_lock));
if (flags & PRSHOLD) {
schedctl_finish_sigblock(t);
sigutok(&prp->pr_sighold, &t->t_hold);
t->t_sig_check = 1; /* so ISSIG will be done */
}
if (flags & PRSTRACE) {
prdelset(&prp->pr_trace, SIGKILL);
prassignset(&p->p_sigmask, &prp->pr_trace);
if (!sigisempty(&p->p_sigmask))
p->p_proc_flag |= P_PR_TRACE;
else if (prisempty(&p->p_fltmask)) {
if (up->u_systrap == 0)
p->p_proc_flag &= ~P_PR_TRACE;
}
}
if (flags & PRSFAULT) {
prassignset(&p->p_fltmask, &prp->pr_fault);
if (!prisempty(&p->p_fltmask))
p->p_proc_flag |= P_PR_TRACE;
else if (sigisempty(&p->p_sigmask)) {
if (up->u_systrap == 0)
p->p_proc_flag &= ~P_PR_TRACE;
}
}
/*
* prsvaddr() must be called before prstep() because
* stepping can depend on the current value of the PC.
* We drop p_lock while touching the lwp's registers (on stack).
*/
if (flags & PRSVADDR) {
mutex_exit(&p->p_lock);
prsvaddr(lwp, prp->pr_vaddr);
mutex_enter(&p->p_lock);
}
}
/*
* Common code for PIOCOPENM
* Returns with the process unlocked.
*/
static int
propenm(prnode_t *pnp, caddr_t cmaddr, caddr_t va, int *rvalp, cred_t *cr)
{
proc_t *p = pnp->pr_common->prc_proc;
struct as *as = p->p_as;
int error = 0;
struct seg *seg;
struct vnode *xvp;
int n;
/*
* By fiat, a system process has no address space.
*/
if ((p->p_flag & SSYS) || as == &kas) {
error = EINVAL;
} else if (cmaddr) {
/*
* We drop p_lock before grabbing the address
* space lock in order to avoid a deadlock with
* the clock thread. The process will not
* disappear and its address space will not
* change because it is marked P_PR_LOCK.
*/
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_READER);
seg = as_segat(as, va);
if (seg != NULL &&
seg->s_ops == &segvn_ops &&
SEGOP_GETVP(seg, va, &xvp) == 0 &&
xvp != NULL &&
xvp->v_type == VREG) {
VN_HOLD(xvp);
} else {
error = EINVAL;
}
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
} else if ((xvp = p->p_exec) == NULL) {
error = EINVAL;
} else {
VN_HOLD(xvp);
}
prunlock(pnp);
if (error == 0) {
if ((error = VOP_ACCESS(xvp, VREAD, 0, cr, NULL)) == 0)
error = fassign(&xvp, FREAD, &n);
if (error) {
VN_RELE(xvp);
} else {
*rvalp = n;
}
}
return (error);
}
/*
* Return old version of process/lwp status.
* The u-block is mapped in by this routine and unmapped at the end.
*/
void
oprgetstatus(kthread_t *t, prstatus_t *sp, zone_t *zp)
{
proc_t *p = ttoproc(t);
klwp_t *lwp = ttolwp(t);
int flags;
user_t *up;
ulong_t instr;
ASSERT(MUTEX_HELD(&p->p_lock));
up = PTOU(p);
bzero(sp, sizeof (*sp));
flags = 0;
if (t->t_state == TS_STOPPED) {
flags |= PR_STOPPED;
if ((t->t_schedflag & TS_PSTART) == 0)
flags |= PR_ISTOP;
} else if (VSTOPPED(t)) {
flags |= PR_STOPPED|PR_ISTOP;
}
if (!(flags & PR_ISTOP) && (t->t_proc_flag & TP_PRSTOP))
flags |= PR_DSTOP;
if (lwp->lwp_asleep)
flags |= PR_ASLEEP;
if (p->p_proc_flag & P_PR_FORK)
flags |= PR_FORK;
if (p->p_proc_flag & P_PR_RUNLCL)
flags |= PR_RLC;
if (p->p_proc_flag & P_PR_KILLCL)
flags |= PR_KLC;
if (p->p_proc_flag & P_PR_ASYNC)
flags |= PR_ASYNC;
if (p->p_proc_flag & P_PR_BPTADJ)
flags |= PR_BPTADJ;
if (p->p_proc_flag & P_PR_PTRACE)
flags |= PR_PCOMPAT;
if (t->t_proc_flag & TP_MSACCT)
flags |= PR_MSACCT;
sp->pr_flags = flags;
if (VSTOPPED(t)) {
sp->pr_why = PR_REQUESTED;
sp->pr_what = 0;
} else {
sp->pr_why = t->t_whystop;
sp->pr_what = t->t_whatstop;
}
if (t->t_whystop == PR_FAULTED)
bcopy(&lwp->lwp_siginfo,
&sp->pr_info, sizeof (k_siginfo_t));
else if (lwp->lwp_curinfo)
bcopy(&lwp->lwp_curinfo->sq_info,
&sp->pr_info, sizeof (k_siginfo_t));
if (SI_FROMUSER(&lwp->lwp_siginfo) && zp->zone_id != GLOBAL_ZONEID &&
sp->pr_info.si_zoneid != zp->zone_id) {
sp->pr_info.si_pid = zp->zone_zsched->p_pid;
sp->pr_info.si_uid = 0;
sp->pr_info.si_ctid = -1;
sp->pr_info.si_zoneid = zp->zone_id;
}
sp->pr_cursig = lwp->lwp_cursig;
prassignset(&sp->pr_sigpend, &p->p_sig);
prassignset(&sp->pr_lwppend, &t->t_sig);
schedctl_finish_sigblock(t);
prassignset(&sp->pr_sighold, &t->t_hold);
sp->pr_altstack = lwp->lwp_sigaltstack;
prgetaction(p, up, lwp->lwp_cursig, &sp->pr_action);
sp->pr_pid = p->p_pid;
if (curproc->p_zone->zone_id != GLOBAL_ZONEID &&
(p->p_flag & SZONETOP)) {
ASSERT(p->p_zone->zone_id != GLOBAL_ZONEID);
/*
* Inside local zones, fake zsched's pid as parent pids for
* processes which reference processes outside of the zone.
*/
sp->pr_ppid = curproc->p_zone->zone_zsched->p_pid;
} else {
sp->pr_ppid = p->p_ppid;
}
sp->pr_pgrp = p->p_pgrp;
sp->pr_sid = p->p_sessp->s_sid;
hrt2ts(mstate_aggr_state(p, LMS_USER), &sp->pr_utime);
hrt2ts(mstate_aggr_state(p, LMS_SYSTEM), &sp->pr_stime);
TICK_TO_TIMESTRUC(p->p_cutime, &sp->pr_cutime);
TICK_TO_TIMESTRUC(p->p_cstime, &sp->pr_cstime);
(void) strncpy(sp->pr_clname, sclass[t->t_cid].cl_name,
sizeof (sp->pr_clname) - 1);
sp->pr_who = t->t_tid;
sp->pr_nlwp = p->p_lwpcnt;
sp->pr_brkbase = p->p_brkbase;
sp->pr_brksize = p->p_brksize;
sp->pr_stkbase = prgetstackbase(p);
sp->pr_stksize = p->p_stksize;
sp->pr_oldcontext = (struct ucontext *)lwp->lwp_oldcontext;
sp->pr_processor = t->t_cpu->cpu_id;
sp->pr_bind = t->t_bind_cpu;
/*
* Fetch the current instruction, if not a system process.
* We don't attempt this unless the lwp is stopped.
*/
if ((p->p_flag & SSYS) || p->p_as == &kas)
sp->pr_flags |= (PR_ISSYS|PR_PCINVAL);
else if (!(flags & PR_STOPPED))
sp->pr_flags |= PR_PCINVAL;
else if (!prfetchinstr(lwp, &instr))
sp->pr_flags |= PR_PCINVAL;
else
sp->pr_instr = instr;
/*
* Drop p_lock while touching the lwp's stack.
*/
mutex_exit(&p->p_lock);
if (prisstep(lwp))
sp->pr_flags |= PR_STEP;
if ((flags & (PR_STOPPED|PR_ASLEEP)) && t->t_sysnum) {
int i;
auxv_t *auxp;
sp->pr_syscall = get_syscall_args(lwp,
(long *)sp->pr_sysarg, &i);
sp->pr_nsysarg = (short)i;
if (t->t_whystop == PR_SYSEXIT &&
(t->t_sysnum == SYS_exec || t->t_sysnum == SYS_execve)) {
sp->pr_sysarg[0] = 0;
sp->pr_sysarg[1] = (uintptr_t)up->u_argv;
sp->pr_sysarg[2] = (uintptr_t)up->u_envp;
for (i = 0, auxp = up->u_auxv;
i < sizeof (up->u_auxv) / sizeof (up->u_auxv[0]);
i++, auxp++) {
if (auxp->a_type == AT_SUN_EXECNAME) {
sp->pr_sysarg[0] =
(uintptr_t)auxp->a_un.a_ptr;
break;
}
}
}
}
if ((flags & PR_STOPPED) || t == curthread)
prgetprregs(lwp, sp->pr_reg);
mutex_enter(&p->p_lock);
}
/*
* Return old version of information used by ps(1).
*/
void
oprgetpsinfo(proc_t *p, prpsinfo_t *psp, kthread_t *tp)
{
kthread_t *t;
char c, state;
user_t *up;
dev_t d;
uint64_t pct;
int retval, niceval;
cred_t *cred;
struct as *as;
hrtime_t hrutime, hrstime, cur_time;
ASSERT(MUTEX_HELD(&p->p_lock));
bzero(psp, sizeof (*psp));
if ((t = tp) == NULL)
t = prchoose(p); /* returns locked thread */
else
thread_lock(t);
/* kludge: map thread state enum into process state enum */
if (t == NULL) {
state = TS_ZOMB;
} else {
state = VSTOPPED(t) ? TS_STOPPED : t->t_state;
thread_unlock(t);
}
switch (state) {
case TS_SLEEP: state = SSLEEP; break;
case TS_RUN: state = SRUN; break;
case TS_ONPROC: state = SONPROC; break;
case TS_ZOMB: state = SZOMB; break;
case TS_STOPPED: state = SSTOP; break;
default: state = 0; break;
}
switch (state) {
case SSLEEP: c = 'S'; break;
case SRUN: c = 'R'; break;
case SZOMB: c = 'Z'; break;
case SSTOP: c = 'T'; break;
case SIDL: c = 'I'; break;
case SONPROC: c = 'O'; break;
#ifdef SXBRK
case SXBRK: c = 'X'; break;
#endif
default: c = '?'; break;
}
psp->pr_state = state;
psp->pr_sname = c;
psp->pr_zomb = (state == SZOMB);
/*
* only export SSYS and SMSACCT; everything else is off-limits to
* userland apps.
*/
psp->pr_flag = p->p_flag & (SSYS | SMSACCT);
mutex_enter(&p->p_crlock);
cred = p->p_cred;
psp->pr_uid = crgetruid(cred);
psp->pr_gid = crgetrgid(cred);
psp->pr_euid = crgetuid(cred);
psp->pr_egid = crgetgid(cred);
mutex_exit(&p->p_crlock);
psp->pr_pid = p->p_pid;
if (curproc->p_zone->zone_id != GLOBAL_ZONEID &&
(p->p_flag & SZONETOP)) {
ASSERT(p->p_zone->zone_id != GLOBAL_ZONEID);
/*
* Inside local zones, fake zsched's pid as parent pids for
* processes which reference processes outside of the zone.
*/
psp->pr_ppid = curproc->p_zone->zone_zsched->p_pid;
} else {
psp->pr_ppid = p->p_ppid;
}
psp->pr_pgrp = p->p_pgrp;
psp->pr_sid = p->p_sessp->s_sid;
psp->pr_addr = prgetpsaddr(p);
hrutime = mstate_aggr_state(p, LMS_USER);
hrstime = mstate_aggr_state(p, LMS_SYSTEM);
hrt2ts(hrutime + hrstime, &psp->pr_time);
TICK_TO_TIMESTRUC(p->p_cutime + p->p_cstime, &psp->pr_ctime);
switch (p->p_model) {
case DATAMODEL_ILP32:
psp->pr_dmodel = PR_MODEL_ILP32;
break;
case DATAMODEL_LP64:
psp->pr_dmodel = PR_MODEL_LP64;
break;
}
if (state == SZOMB || t == NULL) {
int wcode = p->p_wcode; /* must be atomic read */
if (wcode)
psp->pr_wstat = wstat(wcode, p->p_wdata);
psp->pr_lttydev = PRNODEV;
psp->pr_ottydev = (o_dev_t)PRNODEV;
psp->pr_size = 0;
psp->pr_rssize = 0;
psp->pr_pctmem = 0;
} else {
up = PTOU(p);
psp->pr_wchan = t->t_wchan;
psp->pr_pri = t->t_pri;
(void) strncpy(psp->pr_clname, sclass[t->t_cid].cl_name,
sizeof (psp->pr_clname) - 1);
retval = CL_DONICE(t, NULL, 0, &niceval);
if (retval == 0) {
psp->pr_oldpri = v.v_maxsyspri - psp->pr_pri;
psp->pr_nice = niceval + NZERO;
} else {
psp->pr_oldpri = 0;
psp->pr_nice = 0;
}
d = cttydev(p);
#ifdef sun
{
extern dev_t rwsconsdev, rconsdev, uconsdev;
/*
* If the controlling terminal is the real
* or workstation console device, map to what the
* user thinks is the console device. Handle case when
* rwsconsdev or rconsdev is set to NODEV for Starfire.
*/
if ((d == rwsconsdev || d == rconsdev) && d != NODEV)
d = uconsdev;
}
#endif
psp->pr_lttydev = (d == NODEV) ? PRNODEV : d;
psp->pr_ottydev = cmpdev(d);
psp->pr_start = up->u_start;
bcopy(up->u_comm, psp->pr_fname,
MIN(sizeof (up->u_comm), sizeof (psp->pr_fname)-1));
bcopy(up->u_psargs, psp->pr_psargs,
MIN(PRARGSZ-1, PSARGSZ));
psp->pr_syscall = t->t_sysnum;
psp->pr_argc = up->u_argc;
psp->pr_argv = (char **)up->u_argv;
psp->pr_envp = (char **)up->u_envp;
/* compute %cpu for the lwp or process */
pct = 0;
if ((t = tp) == NULL)
t = p->p_tlist;
cur_time = gethrtime_unscaled();
do {
pct += cpu_update_pct(t, cur_time);
if (tp != NULL) /* just do the one lwp */
break;
} while ((t = t->t_forw) != p->p_tlist);
psp->pr_pctcpu = prgetpctcpu(pct);
psp->pr_cpu = (psp->pr_pctcpu*100 + 0x6000) >> 15; /* [0..99] */
if (psp->pr_cpu > 99)
psp->pr_cpu = 99;
if ((p->p_flag & SSYS) || (as = p->p_as) == &kas) {
psp->pr_size = 0;
psp->pr_rssize = 0;
psp->pr_pctmem = 0;
} else {
mutex_exit(&p->p_lock);
AS_LOCK_ENTER(as, &as->a_lock, RW_READER);
psp->pr_size = btopr(as->a_resvsize);
psp->pr_rssize = rm_asrss(as);
psp->pr_pctmem = rm_pctmemory(as);
AS_LOCK_EXIT(as, &as->a_lock);
mutex_enter(&p->p_lock);
}
}
psp->pr_bysize = ptob(psp->pr_size);
psp->pr_byrssize = ptob(psp->pr_rssize);
}
/*
* Return an array of structures with memory map information.
* We allocate here; the caller must deallocate.
* The caller is also responsible to append the zero-filled entry
* that terminates the PIOCMAP output buffer.
*/
static int
oprgetmap(proc_t *p, list_t *iolhead)
{
struct as *as = p->p_as;
prmap_t *mp;
struct seg *seg;
struct seg *brkseg, *stkseg;
uint_t prot;
ASSERT(as != &kas && AS_WRITE_HELD(as, &as->a_lock));
/*
* Request an initial buffer size that doesn't waste memory
* if the address space has only a small number of segments.
*/
pr_iol_initlist(iolhead, sizeof (*mp), avl_numnodes(&as->a_segtree));
if ((seg = AS_SEGFIRST(as)) == NULL)
return (0);
brkseg = break_seg(p);
stkseg = as_segat(as, prgetstackbase(p));
do {
caddr_t eaddr = seg->s_base + pr_getsegsize(seg, 0);
caddr_t saddr, naddr;
void *tmp = NULL;
for (saddr = seg->s_base; saddr < eaddr; saddr = naddr) {
prot = pr_getprot(seg, 0, &tmp, &saddr, &naddr, eaddr);
if (saddr == naddr)
continue;
mp = pr_iol_newbuf(iolhead, sizeof (*mp));
mp->pr_vaddr = saddr;
mp->pr_size = naddr - saddr;
mp->pr_off = SEGOP_GETOFFSET(seg, saddr);
mp->pr_mflags = 0;
if (prot & PROT_READ)
mp->pr_mflags |= MA_READ;
if (prot & PROT_WRITE)
mp->pr_mflags |= MA_WRITE;
if (prot & PROT_EXEC)
mp->pr_mflags |= MA_EXEC;
if (SEGOP_GETTYPE(seg, saddr) & MAP_SHARED)
mp->pr_mflags |= MA_SHARED;
if (seg == brkseg)
mp->pr_mflags |= MA_BREAK;
else if (seg == stkseg)
mp->pr_mflags |= MA_STACK;
mp->pr_pagesize = PAGESIZE;
}
ASSERT(tmp == NULL);
} while ((seg = AS_SEGNEXT(as, seg)) != NULL);
return (0);
}
#ifdef _SYSCALL32_IMPL
static int
oprgetmap32(proc_t *p, list_t *iolhead)
{
struct as *as = p->p_as;
ioc_prmap32_t *mp;
struct seg *seg;
struct seg *brkseg, *stkseg;
uint_t prot;
ASSERT(as != &kas && AS_WRITE_HELD(as, &as->a_lock));
/*
* Request an initial buffer size that doesn't waste memory
* if the address space has only a small number of segments.
*/
pr_iol_initlist(iolhead, sizeof (*mp), avl_numnodes(&as->a_segtree));
if ((seg = AS_SEGFIRST(as)) == NULL)
return (0);
brkseg = break_seg(p);
stkseg = as_segat(as, prgetstackbase(p));
do {
caddr_t eaddr = seg->s_base + pr_getsegsize(seg, 0);
caddr_t saddr, naddr;
void *tmp = NULL;
for (saddr = seg->s_base; saddr < eaddr; saddr = naddr) {
prot = pr_getprot(seg, 0, &tmp, &saddr, &naddr, eaddr);
if (saddr == naddr)
continue;
mp = pr_iol_newbuf(iolhead, sizeof (*mp));
mp->pr_vaddr = (caddr32_t)(uintptr_t)saddr;
mp->pr_size = (size32_t)(naddr - saddr);
mp->pr_off = (off32_t)SEGOP_GETOFFSET(seg, saddr);
mp->pr_mflags = 0;
if (prot & PROT_READ)
mp->pr_mflags |= MA_READ;
if (prot & PROT_WRITE)
mp->pr_mflags |= MA_WRITE;
if (prot & PROT_EXEC)
mp->pr_mflags |= MA_EXEC;
if (SEGOP_GETTYPE(seg, saddr) & MAP_SHARED)
mp->pr_mflags |= MA_SHARED;
if (seg == brkseg)
mp->pr_mflags |= MA_BREAK;
else if (seg == stkseg)
mp->pr_mflags |= MA_STACK;
mp->pr_pagesize = PAGESIZE;
}
ASSERT(tmp == NULL);
} while ((seg = AS_SEGNEXT(as, seg)) != NULL);
return (0);
}
#endif /* _SYSCALL32_IMPL */
/*
* Return the size of the old /proc page data file.
*/
size_t
oprpdsize(struct as *as)
{
struct seg *seg;
size_t size;
ASSERT(as != &kas && AS_WRITE_HELD(as, &as->a_lock));
if ((seg = AS_SEGFIRST(as)) == NULL)
return (0);
size = sizeof (prpageheader_t);
do {
caddr_t eaddr = seg->s_base + pr_getsegsize(seg, 0);
caddr_t saddr, naddr;
void *tmp = NULL;
size_t npage;
for (saddr = seg->s_base; saddr < eaddr; saddr = naddr) {
(void) pr_getprot(seg, 0, &tmp, &saddr, &naddr, eaddr);
if ((npage = (naddr - saddr) / PAGESIZE) != 0)
size += sizeof (prasmap_t) + roundlong(npage);
}
ASSERT(tmp == NULL);
} while ((seg = AS_SEGNEXT(as, seg)) != NULL);
return (size);
}
#ifdef _SYSCALL32_IMPL
size_t
oprpdsize32(struct as *as)
{
struct seg *seg;
size_t size;
ASSERT(as != &kas && AS_WRITE_HELD(as, &as->a_lock));
if ((seg = AS_SEGFIRST(as)) == NULL)
return (0);
size = sizeof (ioc_prpageheader32_t);
do {
caddr_t eaddr = seg->s_base + pr_getsegsize(seg, 0);
caddr_t saddr, naddr;
void *tmp = NULL;
size_t npage;
for (saddr = seg->s_base; saddr < eaddr; saddr = naddr) {
(void) pr_getprot(seg, 0, &tmp, &saddr, &naddr, eaddr);
if ((npage = (naddr - saddr) / PAGESIZE) != 0)
size += sizeof (ioc_prmap32_t) + round4(npage);
}
ASSERT(tmp == NULL);
} while ((seg = AS_SEGNEXT(as, seg)) != NULL);
return (size);
}
#endif /* _SYSCALL32_IMPL */
/*
* Read old /proc page data information.
*/
int
oprpdread(struct as *as, uint_t hatid, struct uio *uiop)
{
caddr_t buf;
size_t size;
prpageheader_t *php;
prasmap_t *pmp;
struct seg *seg;
int error;
again:
AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
if ((seg = AS_SEGFIRST(as)) == NULL) {
AS_LOCK_EXIT(as, &as->a_lock);
return (0);
}
size = oprpdsize(as);
if (uiop->uio_resid < size) {
AS_LOCK_EXIT(as, &as->a_lock);
return (E2BIG);
}
buf = kmem_zalloc(size, KM_SLEEP);
php = (prpageheader_t *)buf;
pmp = (prasmap_t *)(buf + sizeof (prpageheader_t));
hrt2ts(gethrtime(), &php->pr_tstamp);
php->pr_nmap = 0;
php->pr_npage = 0;
do {
caddr_t eaddr = seg->s_base + pr_getsegsize(seg, 0);
caddr_t saddr, naddr;
void *tmp = NULL;
for (saddr = seg->s_base; saddr < eaddr; saddr = naddr) {
size_t len;
size_t npage;
uint_t prot;
uintptr_t next;
prot = pr_getprot(seg, 0, &tmp, &saddr, &naddr, eaddr);
if ((len = naddr - saddr) == 0)
continue;
npage = len / PAGESIZE;
next = (uintptr_t)(pmp + 1) + roundlong(npage);
/*
* It's possible that the address space can change
* subtlely even though we're holding as->a_lock
* due to the nondeterminism of page_exists() in
* the presence of asychronously flushed pages or
* mapped files whose sizes are changing.
* page_exists() may be called indirectly from
* pr_getprot() by a SEGOP_INCORE() routine.
* If this happens we need to make sure we don't
* overrun the buffer whose size we computed based
* on the initial iteration through the segments.
* Once we've detected an overflow, we need to clean
* up the temporary memory allocated in pr_getprot()
* and retry. If there's a pending signal, we return
* EINTR so that this thread can be dislodged if
* a latent bug causes us to spin indefinitely.
*/
if (next > (uintptr_t)buf + size) {
pr_getprot_done(&tmp);
AS_LOCK_EXIT(as, &as->a_lock);
kmem_free(buf, size);
if (ISSIG(curthread, JUSTLOOKING))
return (EINTR);
goto again;
}
php->pr_nmap++;
php->pr_npage += npage;
pmp->pr_vaddr = saddr;
pmp->pr_npage = npage;
pmp->pr_off = SEGOP_GETOFFSET(seg, saddr);
pmp->pr_mflags = 0;
if (prot & PROT_READ)
pmp->pr_mflags |= MA_READ;
if (prot & PROT_WRITE)
pmp->pr_mflags |= MA_WRITE;
if (prot & PROT_EXEC)
pmp->pr_mflags |= MA_EXEC;
if (SEGOP_GETTYPE(seg, saddr) & MAP_SHARED)
pmp->pr_mflags |= MA_SHARED;
pmp->pr_pagesize = PAGESIZE;
hat_getstat(as, saddr, len, hatid,
(char *)(pmp + 1), HAT_SYNC_ZERORM);
pmp = (prasmap_t *)next;
}
ASSERT(tmp == NULL);
} while ((seg = AS_SEGNEXT(as, seg)) != NULL);
AS_LOCK_EXIT(as, &as->a_lock);
ASSERT((uintptr_t)pmp <= (uintptr_t)buf + size);
error = uiomove(buf, (caddr_t)pmp - buf, UIO_READ, uiop);
kmem_free(buf, size);
return (error);
}
#ifdef _SYSCALL32_IMPL
int
oprpdread32(struct as *as, uint_t hatid, struct uio *uiop)
{
caddr_t buf;
size_t size;
ioc_prpageheader32_t *php;
ioc_prasmap32_t *pmp;
struct seg *seg;
int error;
again:
AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
if ((seg = AS_SEGFIRST(as)) == NULL) {
AS_LOCK_EXIT(as, &as->a_lock);
return (0);
}
size = oprpdsize32(as);
if (uiop->uio_resid < size) {
AS_LOCK_EXIT(as, &as->a_lock);
return (E2BIG);
}
buf = kmem_zalloc(size, KM_SLEEP);
php = (ioc_prpageheader32_t *)buf;
pmp = (ioc_prasmap32_t *)(buf + sizeof (ioc_prpageheader32_t));
hrt2ts32(gethrtime(), &php->pr_tstamp);
php->pr_nmap = 0;
php->pr_npage = 0;
do {
caddr_t eaddr = seg->s_base + pr_getsegsize(seg, 0);
caddr_t saddr, naddr;
void *tmp = NULL;
for (saddr = seg->s_base; saddr < eaddr; saddr = naddr) {
size_t len;
size_t npage;
uint_t prot;
uintptr_t next;
prot = pr_getprot(seg, 0, &tmp, &saddr, &naddr, eaddr);
if ((len = naddr - saddr) == 0)
continue;
npage = len / PAGESIZE;
next = (uintptr_t)(pmp + 1) + round4(npage);
/*
* It's possible that the address space can change
* subtlely even though we're holding as->a_lock
* due to the nondeterminism of page_exists() in
* the presence of asychronously flushed pages or
* mapped files whose sizes are changing.
* page_exists() may be called indirectly from
* pr_getprot() by a SEGOP_INCORE() routine.
* If this happens we need to make sure we don't
* overrun the buffer whose size we computed based
* on the initial iteration through the segments.
* Once we've detected an overflow, we need to clean
* up the temporary memory allocated in pr_getprot()
* and retry. If there's a pending signal, we return
* EINTR so that this thread can be dislodged if
* a latent bug causes us to spin indefinitely.
*/
if (next > (uintptr_t)buf + size) {
pr_getprot_done(&tmp);
AS_LOCK_EXIT(as, &as->a_lock);
kmem_free(buf, size);
if (ISSIG(curthread, JUSTLOOKING))
return (EINTR);
goto again;
}
php->pr_nmap++;
php->pr_npage += npage;
pmp->pr_vaddr = (uint32_t)(uintptr_t)saddr;
pmp->pr_npage = (uint32_t)npage;
pmp->pr_off = (int32_t)SEGOP_GETOFFSET(seg, saddr);
pmp->pr_mflags = 0;
if (prot & PROT_READ)
pmp->pr_mflags |= MA_READ;
if (prot & PROT_WRITE)
pmp->pr_mflags |= MA_WRITE;
if (prot & PROT_EXEC)
pmp->pr_mflags |= MA_EXEC;
if (SEGOP_GETTYPE(seg, saddr) & MAP_SHARED)
pmp->pr_mflags |= MA_SHARED;
pmp->pr_pagesize = PAGESIZE;
hat_getstat(as, saddr, len, hatid,
(char *)(pmp + 1), HAT_SYNC_ZERORM);
pmp = (ioc_prasmap32_t *)next;
}
ASSERT(tmp == NULL);
} while ((seg = AS_SEGNEXT(as, seg)) != NULL);
AS_LOCK_EXIT(as, &as->a_lock);
ASSERT((uintptr_t)pmp == (uintptr_t)buf + size);
error = uiomove(buf, (caddr_t)pmp - buf, UIO_READ, uiop);
kmem_free(buf, size);
return (error);
}
#endif /* _SYSCALL32_IMPL */
/*ARGSUSED*/
#ifdef _SYSCALL32_IMPL
int
prioctl(
struct vnode *vp,
int cmd,
intptr_t arg,
int flag,
cred_t *cr,
int *rvalp,
caller_context_t *ct)
{
switch (curproc->p_model) {
case DATAMODEL_ILP32:
return (prioctl32(vp, cmd, arg, flag, cr, rvalp, ct));
case DATAMODEL_LP64:
return (prioctl64(vp, cmd, arg, flag, cr, rvalp, ct));
default:
return (ENOSYS);
}
}
#endif /* _SYSCALL32_IMPL */