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KDFS-windows-pioctl-drive-subst-20081226

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LICENSE MIT

GetDriveType() will return "REMOTE" for drive letters that are mapped
to network devices via the SUBST command.  Recursively check drive letters
for the final substitution before checking to see if the drive letter
is in fact an AFS device.


(cherry picked from commit 238ad07e13a85366bcf49a309e3735d26ff51ff2)
This commit is contained in:
Jeffrey Altman 2008-12-26 21:20:09 +00:00
parent 7f8144b11d
commit a33eee0418
1 changed files with 50 additions and 0 deletions
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50
src/sys/pioctl_nt.c
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@ -504,6 +504,45 @@ GetLSAPrincipalName(char * szUser, DWORD *dwSize)
return success;
}
//
// Recursively evaluate drivestr to find the final
// dos drive letter to which the source is mapped.
//
static BOOL
DriveSubstitution(char *drivestr, char *subststr)
{
char device[MAX_PATH];
if ( QueryDosDevice(drivestr, device, MAX_PATH) )
{
if ( device[0] == '\\' &&
device[1] == '?' &&
device[2] == '?' &&
device[3] == '\\' &&
isalpha(device[4]) &&
device[5] == ':')
{
device[0] = device[4];
device[1] = ':';
device[2] = '\0';
if ( DriveSubstitution(device, subststr) )
{
return TRUE;
} else {
subststr[0] = device[0];
subststr[1] = ':';
subststr[2] = '\0';
return TRUE;
}
}
}
return FALSE;
}
//
// drivestr - is "<drive-letter>:"
//
static BOOL
DriveIsMappedToAFS(char *drivestr, char *NetbiosName)
{
@ -514,6 +553,17 @@ DriveIsMappedToAFS(char *drivestr, char *NetbiosName)
LPNETRESOURCE lpnrLocal; // pointer to enumerated structures
DWORD i;
BOOL bIsAFS = FALSE;
char subststr[3];
//
// Handle drive letter substitution created with "SUBST <drive> <path>".
// If a substitution has occurred, use the target drive letter instead
// of the source.
//
if ( DriveSubstitution(drivestr, subststr) )
{
drivestr = subststr;
}
//
// Call the WNetOpenEnum function to begin the enumeration.