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Kirill Smelkov
linux
Commits
a866697c
Commit
a866697c
authored
Feb 06, 2003
by
Daniel Jacobowitz
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Signal handling bugs for thread exit + ptrace
parent
45c1a159
Changes
1
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1 changed file
with
12 additions
and
4 deletions
+12
-4
kernel/exit.c
kernel/exit.c
+12
-4
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kernel/exit.c
View file @
a866697c
...
...
@@ -586,7 +586,7 @@ static void exit_notify(void)
* is about to become orphaned.
*/
t
=
current
->
parent
;
t
=
current
->
real_
parent
;
if
((
t
->
pgrp
!=
current
->
pgrp
)
&&
(
t
->
session
==
current
->
session
)
&&
...
...
@@ -619,8 +619,16 @@ static void exit_notify(void)
current
->
exit_signal
=
SIGCHLD
;
if
(
current
->
exit_signal
!=
-
1
)
/* If something other than our normal parent is ptracing us, then
* send it a SIGCHLD instead of honoring exit_signal. exit_signal
* only has special meaning to our real parent.
*/
if
(
current
->
exit_signal
!=
-
1
)
{
if
(
current
->
parent
==
current
->
real_parent
)
do_notify_parent
(
current
,
current
->
exit_signal
);
else
do_notify_parent
(
current
,
SIGCHLD
);
}
current
->
state
=
TASK_ZOMBIE
;
/*
...
...
@@ -877,7 +885,7 @@ asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr, int options, struc
if
(
p
->
real_parent
!=
p
->
parent
)
{
write_lock_irq
(
&
tasklist_lock
);
__ptrace_unlink
(
p
);
do_notify_parent
(
p
,
SIGCHLD
);
do_notify_parent
(
p
,
p
->
exit_signal
);
p
->
state
=
TASK_ZOMBIE
;
write_unlock_irq
(
&
tasklist_lock
);
}
else
...
...
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