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qga-win: demystify namespace stripping

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It was not obvious what exactly the cryptic string copying does to the
GUID. This change makes the intent clearer.

Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Tomáš Golembiovský 2018-10-23 13:23:23 +02:00 committed by Michael Roth
parent 4550dee80f
commit 7fae518479
1 changed files with 8 additions and 1 deletions
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9
qga/commands-win32.c
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@ -521,7 +521,7 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
char dev_name[MAX_PATH];
char *buffer = NULL;
GuestPCIAddress *pci = NULL;
char *name = g_strdup(&guid[4]);
char *name = NULL;
bool partial_pci = false;
pci = g_malloc0(sizeof(*pci));
pci->domain = -1;
@ -529,6 +529,13 @@ static GuestPCIAddress *get_pci_info(char *guid, Error **errp)
pci->function = -1;
pci->bus = -1;
if (g_str_has_prefix(guid, "\\\\.\\") ||
g_str_has_prefix(guid, "\\\\?\\")) {
name = g_strdup(guid + 4);
} else {
name = g_strdup(guid);
}
if (!QueryDosDevice(name, dev_name, ARRAY_SIZE(dev_name))) {
error_setg_win32(errp, GetLastError(), "failed to get dos device name");
goto out;