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server: Implement support for DUPLICATE_SAME_ATTRIBUTES in DuplicateHandle().

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This flag is documented on MSDN in ZwDuplicateObject() but not in
DuplicateHandle(). Yet functional on both.

Signed-off-by: Eric Pouech <epouech@codeweavers.com>
This commit is contained in:
Eric Pouech 2023-11-18 11:59:29 +01:00 • committed by Alexandre Julliard
parent d68a0e650a
commit 1c7e1f1fc6
2 changed files with 5 additions and 4 deletions
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3
dlls/kernel32/tests/process.c
View file

@ -2560,7 +2560,6 @@ static void test_DuplicateHandle(void)
0, TRUE, DUPLICATE_SAME_ACCESS | DUPLICATE_SAME_ATTRIBUTES);
ok(r, "DuplicateHandle error %lu\n", GetLastError());
r = GetHandleInformation(out, &info);
todo_wine
ok(r && info == 0, "Unexpected info %lx\n", info);
CloseHandle(out);
@ -2576,7 +2575,6 @@ static void test_DuplicateHandle(void)
ok(r, "DuplicateHandle error %lu\n", GetLastError());
info = 0xdeabeef;
r = GetHandleInformation(out, &info);
todo_wine
ok(r && info == (HANDLE_FLAG_INHERIT | HANDLE_FLAG_PROTECT_FROM_CLOSE), "Unexpected info %lx\n", info);
r = SetHandleInformation(out, HANDLE_FLAG_PROTECT_FROM_CLOSE, 0);
ok(r, "SetHandleInformation error %lu\n", GetLastError());
@ -2590,7 +2588,6 @@ static void test_DuplicateHandle(void)
ok(r, "DuplicateHandle error %lu\n", GetLastError());
info = 0xdeabeef;
r = GetHandleInformation(out, &info);
todo_wine
ok(r && info == 0, "Unexpected info %lx\n", info);
CloseHandle(out);
}

6
server/handle.c
View file

@ -566,7 +566,7 @@ obj_handle_t duplicate_handle( struct process *src, obj_handle_t src_handle, str
{
obj_handle_t res;
struct handle_entry *entry;
unsigned int src_access;
unsigned int src_access, src_flags;
struct object *obj = get_handle_obj( src, src_handle, 0, NULL );
if (!obj) return 0;
@ -574,6 +574,7 @@ obj_handle_t duplicate_handle( struct process *src, obj_handle_t src_handle, str
src_access = entry->access;
else /* pseudo-handle, give it full access */
src_access = obj->ops->map_access( obj, GENERIC_ALL );
src_flags = (src_access & RESERVED_ALL) >> RESERVED_SHIFT;
src_access &= ~RESERVED_ALL;
if (options & DUPLICATE_SAME_ACCESS)
@ -611,6 +612,9 @@ obj_handle_t duplicate_handle( struct process *src, obj_handle_t src_handle, str
res = alloc_handle_entry( dst, obj, access, attr );
}
if (res && (options & DUPLICATE_SAME_ATTRIBUTES))
set_handle_flags( dst, res, ~0u, src_flags );
release_object( obj );
return res;
}