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PathV2: Handle more reserved filenames on windows.

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Patch by Aaron Ballman!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138213 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-08-20 21:36:38 +00:00
parent fbe1681490
commit 2e608c6b61
1 changed files with 24 additions and 2 deletions
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26
lib/Support/Windows/PathV2.inc
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@ -445,13 +445,35 @@ error_code file_size(const Twine &path, uint64_t &result) {
return success;
}
static bool isReservedName(StringRef path) {
// This list of reserved names comes from MSDN, at:
// http://msdn.microsoft.com/en-us/library/aa365247%28v=vs.85%29.aspx
static const char *sReservedNames[] = { "nul", "con", "prn", "aux",
"com1", "com2", "com3", "com4", "com5", "com6",
"com7", "com8", "com9", "lpt1", "lpt2", "lpt3",
"lpt4", "lpt5", "lpt6", "lpt7", "lpt8", "lpt9" };
// First, check to see if this is a device namespace, which always
// starts with \\.\, since device namespaces are not legal file paths.
if (path.startswith("\\\\.\\"))
return true;
// Then compare against the list of ancient reserved names
for (size_t i = 0; i < sizeof(sReservedNames) / sizeof(const char *); ++i) {
if (path.equals_lower(sReservedNames[i]))
return true;
}
// The path isn't what we consider reserved.
return false;
}
error_code status(const Twine &path, file_status &result) {
SmallString<128> path_storage;
SmallVector<wchar_t, 128> path_utf16;
StringRef path8 = path.toStringRef(path_storage);
// FIXME: We should detect as many "special file name" as possible.
if (path8.compare_lower("nul") == 0) {
if (isReservedName(path8)) {
result = file_status(file_type::character_file);
return success;
}