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sys: FspVolumeCreate: check VolumeParams->Prefix for proper syntax

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Bill Zissimopoulos
2016-04-10 18:50:12 -07:00
parent 2e5af0c6ef
commit 1876aff99c
1 changed files with 13 additions and 0 deletions
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13
src/sys/volume.c
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@@ -115,8 +115,21 @@ NTSTATUS FspVolumeCreate(
for (; 0 < PrefixLength && L'\\' == VolumeParams.Prefix[PrefixLength - 1]; PrefixLength--) for (; 0 < PrefixLength && L'\\' == VolumeParams.Prefix[PrefixLength - 1]; PrefixLength--)
; ;
VolumeParams.Prefix[PrefixLength] = L'\0'; VolumeParams.Prefix[PrefixLength] = L'\0';
/* volume prefix cannot be the empty string */
if (0 == PrefixLength) if (0 == PrefixLength)
return STATUS_INVALID_PARAMETER; return STATUS_INVALID_PARAMETER;
/* volume prefix must start with exactly one backslash */
if (L'\\' != VolumeParams.Prefix[0] || L'\\' == VolumeParams.Prefix[1])
return STATUS_INVALID_PARAMETER;
/* volume prefix must have at least one other backslash */
USHORT I;
for (I = 1; L'\0' != VolumeParams.Prefix[I] && L'\\' != VolumeParams.Prefix[I]; I++)
;
if (I == PrefixLength)
return STATUS_INVALID_PARAMETER;
} }
/* create volume guid */ /* create volume guid */