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reg: Don't enumerate a registry key for subkeys if we know the key does not have subkeys. 

Signed-off-by: Hugh McMaster <hugh.mcmaster@outlook.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hugh McMaster 2021-04-28 19:19:32 +10:00 committed by Alexandre Julliard
parent 35ccb87a76
commit 33cfc644a0
1 changed files with 6 additions and 3 deletions
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9
programs/reg/query.c
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@ -213,7 +213,7 @@ static int query_value(HKEY hkey, WCHAR *value_name, WCHAR *path, BOOL recurse)
static int query_all(HKEY hkey, WCHAR *path, BOOL recurse, BOOL recursing)
{
LONG rc;
DWORD num_values;
DWORD num_subkeys, num_values;
DWORD max_value_len = 256, value_len;
DWORD max_data_bytes = 2048, data_size;
DWORD subkey_len;
@ -222,8 +222,8 @@ static int query_all(HKEY hkey, WCHAR *path, BOOL recurse, BOOL recursing)
BYTE *data;
HKEY subkey;
rc = RegQueryInfoKeyW(hkey, NULL, NULL, NULL, NULL, NULL, NULL,
&num_values, NULL, NULL, NULL, NULL);
rc = RegQueryInfoKeyW(hkey, NULL, NULL, NULL, &num_subkeys, NULL,
NULL, &num_values, NULL, NULL, NULL, NULL);
if (rc) return 1;
if (num_values || recursing)
@ -265,6 +265,9 @@ static int query_all(HKEY hkey, WCHAR *path, BOOL recurse, BOOL recursing)
if (i || recursing)
output_string(newlineW);
if (!num_subkeys)
return 0;
subkey_name = malloc(MAX_SUBKEY_LEN * sizeof(WCHAR));
path_len = lstrlenW(path);