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Index: sys/fs/procfs/procfs_ioctl.c
===================================================================
--- sys/fs/procfs/procfs_ioctl.c
+++ sys/fs/procfs/procfs_ioctl.c
@@ -65,7 +65,7 @@
#ifdef COMPAT_FREEBSD32
struct procfs_status32 *ps32;
#endif
- int error, flags, sig;
+ int error, flags;
#ifdef COMPAT_FREEBSD6
int ival;
#endif
@@ -85,7 +85,7 @@
data = &ival;
#endif
case PIOCBIS:
- p->p_stops |= *(unsigned int *)data;
+ error = EOPNOTSUPP;
break;
#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
case _IOC(IOC_IN, 'p', 2, 0):
@@ -96,7 +96,7 @@
data = &ival;
#endif
case PIOCBIC:
- p->p_stops &= ~*(unsigned int *)data;
+ error = EOPNOTSUPP;
break;
#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
case _IOC(IOC_IN, 'p', 3, 0):
@@ -124,43 +124,27 @@
*(unsigned int *)data = p->p_pfsflags;
break;
case PIOCWAIT:
- while (p->p_step == 0 && (p->p_flag & P_WEXIT) == 0) {
- /* sleep until p stops */
- _PHOLD(p);
- error = msleep(&p->p_stype, &p->p_mtx,
- PWAIT|PCATCH, "pioctl", 0);
- _PRELE(p);
- if (error != 0)
- break;
- }
- /* fall through to PIOCSTATUS */
+ error = EOPNOTSUPP;
+ break;
case PIOCSTATUS:
ps = (struct procfs_status *)data;
- ps->state = (p->p_step == 0);
+ ps->state = 1;
ps->flags = 0; /* nope */
- ps->events = p->p_stops;
- ps->why = p->p_step ? p->p_stype : 0;
- ps->val = p->p_step ? p->p_xsig : 0;
+ ps->events = 0;
+ ps->why = 0;
+ ps->val = 0;
break;
#ifdef COMPAT_FREEBSD32
case PIOCWAIT32:
- while (p->p_step == 0 && (p->p_flag & P_WEXIT) == 0) {
- /* sleep until p stops */
- _PHOLD(p);
- error = msleep(&p->p_stype, &p->p_mtx,
- PWAIT|PCATCH, "pioctl", 0);
- _PRELE(p);
- if (error != 0)
- break;
- }
- /* fall through to PIOCSTATUS32 */
+ error = EOPNOTSUPP;
+ break;
case PIOCSTATUS32:
ps32 = (struct procfs_status32 *)data;
- ps32->state = (p->p_step == 0);
+ ps32->state = 1;
ps32->flags = 0; /* nope */
- ps32->events = p->p_stops;
- ps32->why = p->p_step ? p->p_stype : 0;
- ps32->val = p->p_step ? p->p_xsig : 0;
+ ps32->events = 0;
+ ps32->why = 0;
+ ps32->val = 0;
break;
#endif
#if defined(COMPAT_FREEBSD5) || defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
@@ -172,29 +156,7 @@
data = &ival;
#endif
case PIOCCONT:
- if (p->p_step == 0)
- break;
- sig = *(unsigned int *)data;
- if (sig != 0 && !_SIG_VALID(sig)) {
- error = EINVAL;
- break;
- }
-#if 0
- p->p_step = 0;
- if (P_SHOULDSTOP(p)) {
- p->p_xsig = sig;
- p->p_flag &= ~(P_STOPPED_TRACE|P_STOPPED_SIG);
- PROC_SLOCK(p);
- thread_unsuspend(p);
- PROC_SUNLOCK(p);
- } else if (sig)
- kern_psignal(p, sig);
-#else
- if (sig)
- kern_psignal(p, sig);
- p->p_step = 0;
- wakeup(&p->p_step);
-#endif
+ error = EOPNOTSUPP;
break;
default:
error = (ENOTTY);
@@ -212,9 +174,6 @@
if (p != NULL && (p->p_pfsflags & PF_LINGER) == 0) {
PROC_LOCK_ASSERT(p, MA_OWNED);
p->p_pfsflags = 0;
- p->p_stops = 0;
- p->p_step = 0;
- wakeup(&p->p_step);
}
return (0);
}
Index: sys/kern/kern_exec.c
===================================================================
--- sys/kern/kern_exec.c
+++ sys/kern/kern_exec.c
@@ -908,12 +908,6 @@
td->td_dbgflags |= TDB_EXEC;
PROC_UNLOCK(p);
}
-
- /*
- * Stop the process here if its stop event mask has
- * the S_EXEC bit set.
- */
- STOPEVENT(p, S_EXEC, 0);
} else {
exec_fail:
/* we're done here, clear P_INEXEC */
Index: sys/kern/kern_exit.c
===================================================================
--- sys/kern/kern_exit.c
+++ sys/kern/kern_exit.c
@@ -280,15 +280,6 @@
p->p_xexit = rval;
p->p_xsig = signo;
- /*
- * Wakeup anyone in procfs' PIOCWAIT. They should have a hold
- * on our vmspace, so we should block below until they have
- * released their reference to us. Note that if they have
- * requested S_EXIT stops we will block here until they ack
- * via PIOCCONT.
- */
- _STOPEVENT(p, S_EXIT, 0);
-
/*
* Ignore any pending request to stop due to a stop signal.
* Once P_WEXIT is set, future requests will be ignored as
@@ -303,7 +294,6 @@
* decided to wait again after we told them we are exiting.
*/
p->p_flag |= P_WEXIT;
- wakeup(&p->p_stype);
/*
* Wait for any processes that have a hold on our vmspace to
Index: sys/kern/kern_fork.c
===================================================================
--- sys/kern/kern_fork.c
+++ sys/kern/kern_fork.c
@@ -585,7 +585,6 @@
* procfs ioctl flags from its parent.
*/
if (p1->p_pfsflags & PF_FORK) {
- p2->p_stops = p1->p_stops;
p2->p_pfsflags = p1->p_pfsflags;
}
@@ -1109,7 +1108,6 @@
*/
PROC_LOCK(p);
td->td_dbgflags |= TDB_SCX;
- _STOPEVENT(p, S_SCX, td->td_sa.code);
if ((p->p_ptevents & PTRACE_SCX) != 0 ||
(td->td_dbgflags & TDB_BORN) != 0)
ptracestop(td, SIGTRAP, NULL);
Index: sys/kern/kern_prot.c
===================================================================
--- sys/kern/kern_prot.c
+++ sys/kern/kern_prot.c
@@ -2191,8 +2191,6 @@
PROC_LOCK_ASSERT(p, MA_OWNED);
p->p_flag |= P_SUGID;
- if (!(p->p_pfsflags & PF_ISUGID))
- p->p_stops = 0;
}
/*-
Index: sys/kern/kern_sig.c
===================================================================
--- sys/kern/kern_sig.c
+++ sys/kern/kern_sig.c
@@ -2248,14 +2248,6 @@
!((prop & SIGPROP_CONT) && (p->p_flag & P_STOPPED_SIG)))
return (ret);
- /* SIGKILL: Remove procfs STOPEVENTs. */
- if (sig == SIGKILL) {
- /* from procfs_ioctl.c: PIOCBIC */
- p->p_stops = 0;
- /* from procfs_ioctl.c: PIOCCONT */
- p->p_step = 0;
- wakeup(&p->p_step);
- }
wakeup_swapper = 0;
/*
@@ -2852,7 +2844,7 @@
mtx_assert(&ps->ps_mtx, MA_OWNED);
PROC_LOCK_ASSERT(p, MA_OWNED);
for (;;) {
- traced = (p->p_flag & P_TRACED) || (p->p_stops & S_SIG);
+ traced = (p->p_flag & P_TRACED);
sigpending = td->td_sigqueue.sq_signals;
SIGSETOR(sigpending, p->p_sigqueue.sq_signals);
@@ -2896,12 +2888,6 @@
sig = sig_ffs(&sigpending);
}
- if (p->p_stops & S_SIG) {
- mtx_unlock(&ps->ps_mtx);
- stopevent(p, S_SIG, sig);
- mtx_lock(&ps->ps_mtx);
- }
-
/*
* We should see pending but ignored signals
* only if P_TRACED was on when they were posted.
@@ -3106,11 +3092,6 @@
ktrpsig(sig, action, td->td_pflags & TDP_OLDMASK ?
&td->td_oldsigmask : &td->td_sigmask, ksi.ksi_code);
#endif
- if ((p->p_stops & S_SIG) != 0) {
- mtx_unlock(&ps->ps_mtx);
- stopevent(p, S_SIG, sig);
- mtx_lock(&ps->ps_mtx);
- }
if (action == SIG_DFL) {
/*
@@ -3655,7 +3636,6 @@
PROC_LOCK_ASSERT(p, MA_OWNED);
MPASS((p->p_flag & P_HADTHREADS) == 0 || p->p_singlethread == td);
- _STOPEVENT(p, S_CORE, 0);
if (!do_coredump || (!sugid_coredump && (p->p_flag & P_SUGID) != 0) ||
(p->p_flag2 & P2_NOTRACE) != 0) {
Index: sys/kern/subr_syscall.c
===================================================================
--- sys/kern/subr_syscall.c
+++ sys/kern/subr_syscall.c
@@ -90,7 +90,6 @@
goto retval;
}
- STOPEVENT(p, S_SCE, sa->narg);
if (__predict_false((p->p_flag & P_TRACED) != 0)) {
PROC_LOCK(p);
if (p->p_ptevents & PTRACE_SCE)
@@ -227,7 +226,6 @@
* register set. If we ever support an emulation where this
* is not the case, this code will need to be revisited.
*/
- STOPEVENT(p, S_SCX, sa->code);
if (__predict_false(traced ||
(td->td_dbgflags & (TDB_EXEC | TDB_FORK)) != 0)) {
PROC_LOCK(p);
Index: sys/kern/sys_process.c
===================================================================
--- sys/kern/sys_process.c
+++ sys/kern/sys_process.c
@@ -1524,26 +1524,3 @@
}
#undef PROC_READ
#undef PROC_WRITE
-
-/*
- * Stop a process because of a debugging event;
- * stay stopped until p->p_step is cleared
- * (cleared by PIOCCONT in procfs).
- */
-void
-stopevent(struct proc *p, unsigned int event, unsigned int val)
-{
-
- PROC_LOCK_ASSERT(p, MA_OWNED);
- p->p_step = 1;
- CTR3(KTR_PTRACE, "stopevent: pid %d event %u val %u", p->p_pid, event,
- val);
- do {
- if (event != S_EXIT)
- p->p_xsig = val;
- p->p_xthread = NULL;
- p->p_stype = event; /* Which event caused the stop? */
- wakeup(&p->p_stype); /* Wake up any PIOCWAIT'ing procs */
- msleep(&p->p_step, &p->p_mtx, PWAIT, "stopevent", 0);
- } while (p->p_step);
-}
Index: sys/sys/proc.h
===================================================================
--- sys/sys/proc.h
+++ sys/sys/proc.h
@@ -641,9 +641,9 @@
struct sigiolst p_sigiolst; /* (c) List of sigio sources. */
int p_sigparent; /* (c) Signal to parent on exit. */
int p_sig; /* (n) For core dump/debugger XXX. */
- u_int p_stops; /* (c) Stop event bitmask. */
- u_int p_stype; /* (c) Stop event type. */
- char p_step; /* (c) Process is stopped. */
+ u_int p_unused0;
+ u_int p_unused1;
+ char p_unused2;
u_char p_pfsflags; /* (c) Procfs flags. */
u_int p_ptevents; /* (c + e) ptrace() event mask. */
struct nlminfo *p_nlminfo; /* (?) Only used by/for lockd. */
@@ -860,24 +860,6 @@
#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
-
-#define STOPEVENT(p, e, v) do { \
- WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, NULL, \
- "checking stopevent %d", (e)); \
- if ((p)->p_stops & (e)) { \
- PROC_LOCK(p); \
- stopevent((p), (e), (v)); \
- PROC_UNLOCK(p); \
- } \
-} while (0)
-#define _STOPEVENT(p, e, v) do { \
- PROC_LOCK_ASSERT(p, MA_OWNED); \
- WITNESS_WARN(WARN_GIANTOK | WARN_SLEEPOK, &p->p_mtx.lock_object, \
- "checking stopevent %d", (e)); \
- if ((p)->p_stops & (e)) \
- stopevent((p), (e), (v)); \
-} while (0)
-
/* Lock and unlock a process. */
#define PROC_LOCK(p) mtx_lock(&(p)->p_mtx)
#define PROC_TRYLOCK(p) mtx_trylock(&(p)->p_mtx)
@@ -1114,7 +1096,6 @@
void setsugid(struct proc *p);
int should_yield(void);
int sigonstack(size_t sp);
-void stopevent(struct proc *, u_int, u_int);
struct thread *tdfind(lwpid_t, pid_t);
void threadinit(void);
void tidhash_add(struct thread *);

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