[PATCH v2 3/4] kernelbase: Don't return ERROR_INSUFFICIENT_BUFFER from GetEnvironmentVariableW.

From: Vladimir Panteleev <git(a)vladimir.panteleev.md> Windows doesn't do this (except XP, and then only for empty variables, where it returns ERROR_MORE_DATA). Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48471 Signed-off-by: Vladimir Panteleev <git(a)vladimir.panteleev.md> Signed-off-by: Gijs Vermeulen <gijsvrm(a)gmail.com> --- dlls/kernel32/tests/environ.c | 6 ++++++ dlls/kernelbase/process.c | 3 ++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/dlls/kernel32/tests/environ.c b/dlls/kernel32/tests/environ.c index 561fc71c4c..ff822d0349 100644 --- a/dlls/kernel32/tests/environ.c +++ b/dlls/kernel32/tests/environ.c @@ -104,9 +104,12 @@ static void test_GetSetEnvironmentVariableA(void) GetLastError()); /* Try to retrieve the environment variable we just set */ + SetLastError(0xdeadbeef); ret_size = GetEnvironmentVariableA(name, NULL, 0); ok(ret_size == strlen(value) + 1, "should return length with terminating 0 ret_size=%d\n", ret_size); + ok(GetLastError() == 0xdeadbeef, + "should not fail with zero size but GetLastError=%d\n", GetLastError()); lstrcpyA(buf, "foo"); ret_size = GetEnvironmentVariableA(name, buf, lstrlenA(value)); @@ -206,10 +209,13 @@ static void test_GetSetEnvironmentVariableW(void) GetLastError()); /* Try to retrieve the environment variable we just set */ + SetLastError(0xdeadbeef); ret_size = GetEnvironmentVariableW(name, NULL, 0); ok(ret_size == lstrlenW(value) + 1, "should return length with terminating 0 ret_size=%d\n", ret_size); + ok(GetLastError() == 0xdeadbeef, + "should not fail with zero size but GetLastError=%d\n", GetLastError()); lstrcpyW(buf, fooW); ret_size = GetEnvironmentVariableW(name, buf, lstrlenW(value)); diff --git a/dlls/kernelbase/process.c b/dlls/kernelbase/process.c index 4df5408ea9..a82597032d 100644 --- a/dlls/kernelbase/process.c +++ b/dlls/kernelbase/process.c @@ -1284,7 +1284,8 @@ DWORD WINAPI DECLSPEC_HOTPATCH GetEnvironmentVariableW( LPCWSTR name, LPWSTR val status = RtlQueryEnvironmentVariable_U( NULL, &us_name, &us_value ); len = us_value.Length / sizeof(WCHAR); - if (!set_ntstatus( status )) return (status == STATUS_BUFFER_TOO_SMALL) ? len + 1 : 0; + if (status == STATUS_BUFFER_TOO_SMALL) return len + 1; + if (!set_ntstatus( status )) return 0; if (size) val[len] = 0; return len; } -- 2.26.2