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[Qemu-devel] [PATCH 07/13] qapi: allow freeing partially-allocated objec
From: |
Luiz Capitulino |
Subject: |
[Qemu-devel] [PATCH 07/13] qapi: allow freeing partially-allocated objects |
Date: |
Tue, 27 Mar 2012 09:20:45 -0300 |
From: Paolo Bonzini <address@hidden>
Objects going through the dealloc visitor can be only partially allocated.
Detect the situation and avoid a segfault. This also helps with the
input visitor, when there are errors.
Signed-off-by: Paolo Bonzini <address@hidden>
Reviewed-by: Anthony Liguori <address@hidden>
Signed-off-by: Luiz Capitulino <address@hidden>
---
scripts/qapi-visit.py | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 4297621..31d50a6 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -65,6 +65,9 @@ void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const
char *name, Error **
return;
}
visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s),
errp);
+ if (obj && !*obj) {
+ goto end;
+ }
''',
name=name)
push_indent()
@@ -72,6 +75,7 @@ void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const
char *name, Error **
pop_indent()
ret += mcgen('''
+end:
visit_end_struct(m, errp);
}
''')
@@ -122,6 +126,9 @@ void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const
char *name, Error **
return;
}
visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s),
&err);
+ if (obj && !*obj) {
+ goto end;
+ }
visit_type_%(name)sKind(m, &(*obj)->kind, "type", &err);
if (err) {
error_propagate(errp, err);
--
1.7.9.2.384.g4a92a
- [Qemu-devel] [PULL 00/13]: QMP queue, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 02/13] qapi: add struct-errors test case to test-qmp-output-visitor, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 01/13] qapi: fix double free in qmp_output_visitor_cleanup(), Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 03/13] qapi: add a test case for type errors, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 05/13] qapi: fix memory leak on error, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 06/13] qapi: shortcut visits on errors, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 08/13] qapi: untangle next_list, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 04/13] qapi: fail hard on stack imbalance, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 07/13] qapi: allow freeing partially-allocated objects,
Luiz Capitulino <=
- [Qemu-devel] [PATCH 12/13] qmp: parse commands in strict mode, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 09/13] qapi: place outermost object on qiv stack, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 11/13] qmp: add and use q type specifier, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 13/13] qmp: document strict parsing, Luiz Capitulino, 2012/03/27
- [Qemu-devel] [PATCH 10/13] qapi: add strict mode to input visitor, Luiz Capitulino, 2012/03/27
- Re: [Qemu-devel] [PULL 00/13]: QMP queue, Anthony Liguori, 2012/03/30