Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-07-06 04:35:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

[MOUNTMGR]

Browse source 
- Fix IsDriveLetter. CID 1206760.

svn path=/trunk/; revision=64798
This commit is contained in:
Thomas Faber 2014-10-18 10:11:02 +00:00
parent e383d6c605
commit 71451cf5dd
1 changed files with 20 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
reactos/drivers/filters/mountmgr/symlink.c
View file

@ -923,27 +923,35 @@ DeleteSymbolicLinkNameFromMemory(IN PDEVICE_EXTENSION DeviceExtension,
BOOLEAN
IsDriveLetter(PUNICODE_STRING SymbolicName)
{
WCHAR Letter;
BOOLEAN Result = FALSE;
WCHAR Letter, Colon;
/* We must have a precise length */
if (SymbolicName->Length != sizeof(DosDevices.Buffer) + 2 * sizeof(WCHAR))
if (SymbolicName->Length != DosDevices.Length + 2 * sizeof(WCHAR))
{
return FALSE;
}
/* Check if len is correct */
Letter = SymbolicName->Buffer[sizeof(DosDevices.Buffer) / sizeof(WCHAR)];
if (((Letter >= L'A' && Letter <= L'Z') || Letter == (WCHAR)-1) &&
SymbolicName->Buffer[(sizeof(DosDevices.Buffer) + sizeof(WCHAR)) / sizeof (WCHAR)] == L':')
/* Must start with the DosDevices prefix */
if (!RtlPrefixUnicodeString(&DosDevices, SymbolicName, TRUE))
{
/* In case it's not a normal drive letter, check differently */
SymbolicName->Length = sizeof(DosDevices.Buffer);
Result = RtlEqualUnicodeString(SymbolicName, &DosDevices, TRUE);
SymbolicName->Length = sizeof(DosDevices.Buffer) + 2 * sizeof(WCHAR);
return FALSE;
}
return Result;
/* Check if letter is correct */
Letter = SymbolicName->Buffer[DosDevices.Length / sizeof(WCHAR)];
if ((Letter < L'A' || Letter > L'Z') && Letter != (WCHAR)-1)
{
return FALSE;
}
/* And finally it must end with a colon */
Colon = SymbolicName->Buffer[DosDevices.Length / sizeof(WCHAR) + 1];
if (Colon != L':')
{
return FALSE;
}
return TRUE;
}
/*