From d6b876252aeaf8c5ff02d875867176f94d2f982a Mon Sep 17 00:00:00 2001
From: Gregor Jasny <gjasny@googlemail.com>
Date: Mon, 30 Jan 2017 20:32:48 +0100
Subject: [PATCH] SystemTools: Add helper function to check for FIFO file type
Issue: cmake/cmake#16607
---
SystemTools.cxx | 22 ++++++++++++++++++++++
SystemTools.hxx.in | 5 +++++
2 files changed, 27 insertions(+)
diff --git a/SystemTools.cxx b/SystemTools.cxx
index 97dd4ae..8c82ec1 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -3067,6 +3067,28 @@ bool SystemTools::FileIsSymlink(const std::string& name)
#endif
}
+bool SystemTools::FileIsFIFO(const std::string& name)
+{
+#if defined(_WIN32)
+ HANDLE hFile =
+ CreateFileW(Encoding::ToWide(name).c_str(), GENERIC_READ, FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
+ if (hFile == INVALID_HANDLE_VALUE) {
+ return false;
+ }
+ const DWORD type = GetFileType(hFile);
+ CloseHandle(hFile);
+ return type == FILE_TYPE_PIPE;
+#else
+ struct stat fs;
+ if (lstat(name.c_str(), &fs) == 0) {
+ return S_ISFIFO(fs.st_mode);
+ } else {
+ return false;
+ }
+#endif
+}
+
#if defined(_WIN32) && !defined(__CYGWIN__)
bool SystemTools::CreateSymlink(const std::string&, const std::string&)
{
diff --git a/SystemTools.hxx.in b/SystemTools.hxx.in
index f3d06fe..7a5256b 100644
--- a/SystemTools.hxx.in
+++ b/SystemTools.hxx.in
@@ -653,6 +653,11 @@ public:
*/
static bool FileIsSymlink(const std::string& name);
+ /**
+ * Return true if the file is a FIFO
+ */
+ static bool FileIsFIFO(const std::string& name);
+
/**
* Return true if the file has a given signature (first set of bytes)
*/
--
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