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Fixed handling of \\?\ prefix in RtlDosPathNameToNtPathName_U. 

Fixed parsing of UNC file names in RtlGetFullPathName_U.
This commit is contained in:
Alexandre Julliard 2004-04-14 04:34:04 +00:00
parent 1a833442a1
commit 017438cdbc
1 changed files with 37 additions and 28 deletions
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65
dlls/ntdll/path.c
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@ -301,7 +301,7 @@ BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
CURDIR* cd)
{
static const WCHAR LongFileNamePfxW[4] = {'\\','\\','?','\\'};
ULONG sz, ptr_sz, offset;
ULONG sz, offset;
WCHAR local[MAX_PATH];
LPWSTR ptr;
@ -316,20 +316,21 @@ BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
if (!dos_path || !*dos_path) return FALSE;
if (!memcmp(dos_path, LongFileNamePfxW, sizeof(LongFileNamePfxW)))
if (!strncmpW(dos_path, LongFileNamePfxW, 4))
{
dos_path += sizeof(LongFileNamePfxW) / sizeof(WCHAR);
ptr = NULL;
ptr_sz = 0;
ntpath->Length = strlenW(dos_path) * sizeof(WCHAR);
ntpath->MaximumLength = ntpath->Length + sizeof(WCHAR);
ntpath->Buffer = RtlAllocateHeap(GetProcessHeap(), 0, ntpath->MaximumLength);
if (!ntpath->Buffer) return FALSE;
memcpy( ntpath->Buffer, dos_path, ntpath->MaximumLength );
ntpath->Buffer[1] = '?'; /* change \\?\ to \??\ */
return TRUE;
}
else
{
ptr = local;
ptr_sz = sizeof(local);
}
sz = RtlGetFullPathName_U(dos_path, ptr_sz, ptr, file_part);
ptr = local;
sz = RtlGetFullPathName_U(dos_path, sizeof(local), ptr, file_part);
if (sz == 0) return FALSE;
if (sz > ptr_sz)
if (sz > sizeof(local))
{
ptr = RtlAllocateHeap(GetProcessHeap(), 0, sz);
sz = RtlGetFullPathName_U(dos_path, sz, ptr, file_part);
@ -348,16 +349,14 @@ BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(PCWSTR dos_path,
switch (RtlDetermineDosPathNameType_U(ptr))
{
case UNC_PATH: /* \\foo */
if (ptr[2] != '?')
{
offset = 2;
strcatW(ntpath->Buffer, UncPfxW);
}
offset = 2;
strcatW(ntpath->Buffer, UncPfxW);
break;
case DEVICE_PATH: /* \\.\foo */
offset = 4;
break;
default: break; /* needed to keep gcc quiet */
default:
break; /* needed to keep gcc quiet */
}
strcatW(ntpath->Buffer, ptr + offset);
@ -508,6 +507,23 @@ static inline void collapse_path( WCHAR *path, UINT mark )
}
}
/******************************************************************
* skip_unc_prefix
*
* Skip the \\share\dir\ part of a file name. Helper for RtlGetFullPathName_U.
*/
static const WCHAR *skip_unc_prefix( const WCHAR *ptr )
{
ptr += 2;
while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */
while (IS_SEPARATOR(*ptr)) ptr++;
while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */
while (IS_SEPARATOR(*ptr)) ptr++;
return ptr;
}
/******************************************************************
* get_full_path_helper
*
@ -530,10 +546,7 @@ static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
switch (type = RtlDetermineDosPathNameType_U(name))
{
case UNC_PATH: /* \\foo */
ptr = name + 2;
while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* share name */
while (*ptr && IS_SEPARATOR(*ptr)) ptr++;
while (*ptr && !IS_SEPARATOR(*ptr)) ptr++; /* dir name */
ptr = skip_unc_prefix( name );
mark = (ptr - name);
break;
@ -601,9 +614,7 @@ static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
ins_str = cd->Buffer;
if (cd->Buffer[1] != ':')
{
ptr = strchrW(cd->Buffer + 2, '\\');
if (ptr) ptr = strchrW(ptr + 1, '\\');
if (!ptr) ptr = cd->Buffer + strlenW(cd->Buffer);
ptr = skip_unc_prefix( cd->Buffer );
mark = ptr - cd->Buffer;
}
else mark = 3;
@ -636,9 +647,7 @@ static ULONG get_full_path_helper(LPCWSTR name, LPWSTR buffer, ULONG size)
}
else
{
ptr = strchrW(cd->Buffer + 2, '\\');
if (ptr) ptr = strchrW(ptr + 1, '\\');
if (!ptr) ptr = cd->Buffer + strlenW(cd->Buffer);
ptr = skip_unc_prefix( cd->Buffer );
reqsize = (ptr - cd->Buffer) * sizeof(WCHAR);
mark = reqsize / sizeof(WCHAR);
ins_str = cd->Buffer;