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qga-win: Handle fstrim for OSes lower than Win8

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The defrag.exe tool which is used for executing the fstrim command
on Windows doesn't support retrim for OSes lower than Win8. This
commit handles this case and returns a suitable error.

Output of fstrim before this commit:
{"execute":"guest-fstrim"}
{"return": {"paths": [{"path": "C:\\", "error": "An invalid command line option
was specified. (0x89000008)"}, {"path": "F:\\", "error": "An invalid command
line option was specified. (0x89000008)"}, {"path": "S:\\", "error": "An
invalid command line option was specified. (0x89000008)"}]}}

Reported on:
https://bugzilla.redhat.com/show_bug.cgi?id=1594113

Signed-off-by: Sameeh Jubran <sjubran@redhat.com>
* use alternative version query code proposed by Sameeh
* fix up version check logic
* avoid CamelCase variable names when possible
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Sameeh Jubran 2018-06-24 15:45:40 +03:00 committed by Michael Roth
parent 4eecc2e212
commit c5840b905e
1 changed files with 13 additions and 0 deletions
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13
qga/commands-win32.c
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@ -865,6 +865,19 @@ qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp)
GuestFilesystemTrimResponse *resp;
HANDLE handle;
WCHAR guid[MAX_PATH] = L"";
OSVERSIONINFO osvi;
BOOL win8_or_later;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
win8_or_later = (osvi.dwMajorVersion > 6 ||
((osvi.dwMajorVersion == 6) &&
(osvi.dwMinorVersion >= 2)));
if (!win8_or_later) {
error_setg(errp, "fstrim is only supported for Win8+");
return NULL;
}
handle = FindFirstVolumeW(guid, ARRAYSIZE(guid));
if (handle == INVALID_HANDLE_VALUE) {