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- Fix a couple of potential null pointer accesses

svn path=/trunk/; revision=52746
This commit is contained in:
Cameron Gutman 2011-07-20 18:38:13 +00:00
parent 04db4cde59
commit e399b918e2
1 changed files with 5 additions and 1 deletions
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6
reactos/lib/rtl/path.c
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@ -210,6 +210,9 @@ RtlDetermineDosPathNameType_Ustr(IN PCUNICODE_STRING PathString)
Path = PathString->Buffer; Path = PathString->Buffer;
Chars = PathString->Length / sizeof(WCHAR); Chars = PathString->Length / sizeof(WCHAR);
/* Return if there are no characters */
if (!Chars) return RtlPathTypeUnknown;
/* /*
* The algorithm is similar to RtlDetermineDosPathNameType_U but here we * The algorithm is similar to RtlDetermineDosPathNameType_U but here we
* actually check for the path length before touching the characters * actually check for the path length before touching the characters
@ -291,7 +294,8 @@ RtlGetFullPathName_Ustr(IN PUNICODE_STRING FileName,
/* Handle initial path type and failure case */ /* Handle initial path type and failure case */
*PathType = RtlPathTypeUnknown; *PathType = RtlPathTypeUnknown;
if (!(Size) || !(Buffer) || !(FileName) || (FileName->Buffer[0] == UNICODE_NULL)) return 0; if (!(Size) || !(Buffer) || !(FileName) ||
!(FileName->Length) || (FileName->Buffer[0] == UNICODE_NULL)) return 0;
/* Break filename into component parts */ /* Break filename into component parts */
FileNameBuffer = FileName->Buffer; FileNameBuffer = FileName->Buffer;