Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
L
linux
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
Analytics
Analytics
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Commits
Issue Boards
Open sidebar
Kirill Smelkov
linux
Commits
2c2c4c6e
Commit
2c2c4c6e
authored
Dec 31, 2003
by
David Mosberger
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
ia64: Rearrange ia64_do_signal() such that it is possible for a debugger to
cancel system-call restart.
parent
45f4d49a
Changes
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
28 additions
and
17 deletions
+28
-17
arch/ia64/kernel/signal.c
arch/ia64/kernel/signal.c
+28
-17
No files found.
arch/ia64/kernel/signal.c
View file @
2c2c4c6e
...
...
@@ -538,31 +538,41 @@ ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall)
if
(
!
oldset
)
oldset
=
&
current
->
blocked
;
if
(
IS_IA32_PROCESS
(
&
scr
->
pt
))
{
if
(
in_syscall
)
{
if
(
errno
>=
0
)
restart
=
0
;
else
errno
=
-
errno
;
}
}
else
if
((
long
)
scr
->
pt
.
r10
!=
-
1
)
/*
* A system calls has to be restarted only if one of the error codes
* ERESTARTNOHAND, ERESTARTSYS, or ERESTARTNOINTR is returned. If r10
* isn't -1 then r8 doesn't hold an error code and we don't need to
* restart the syscall, so we can clear the "restart" flag here.
*/
restart
=
0
;
/*
* This only loops in the rare cases of handle_signal() failing, in which case we
* need to push through a forced SIGSEGV.
*/
while
(
1
)
{
int
signr
=
get_signal_to_deliver
(
&
info
,
&
scr
->
pt
,
NULL
);
/*
* get_signal_to_deliver() may have run a debugger (via notify_parent())
* and the debugger may have modified the state (e.g., to arrange for an
* inferior call), thus it's important to check for restarting _after_
* get_signal_to_deliver().
*/
if
(
IS_IA32_PROCESS
(
&
scr
->
pt
))
{
if
(
in_syscall
)
{
if
(
errno
>=
0
)
restart
=
0
;
else
errno
=
-
errno
;
}
}
else
if
((
long
)
scr
->
pt
.
r10
!=
-
1
)
/*
* A system calls has to be restarted only if one of the error codes
* ERESTARTNOHAND, ERESTARTSYS, or ERESTARTNOINTR is returned. If r10
* isn't -1 then r8 doesn't hold an error code and we don't need to
* restart the syscall, so we can clear the "restart" flag here.
*/
restart
=
0
;
if
(
signr
<=
0
)
break
;
ka
=
&
current
->
sighand
->
action
[
signr
-
1
];
if
(
restart
)
{
if
(
unlikely
(
restart
)
)
{
switch
(
errno
)
{
case
ERESTART_RESTARTBLOCK
:
case
ERESTARTNOHAND
:
...
...
@@ -582,6 +592,7 @@ ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall)
scr
->
pt
.
cr_iip
-=
2
;
}
else
ia64_decrement_ip
(
&
scr
->
pt
);
restart
=
0
;
/* don't restart twice if handle_signal() fails... */
}
}
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment