From 27b03281e2028d8239c3f7e43ea67f30a70dc42b Mon Sep 17 00:00:00 2001
From: Rahul Gottipati <rahul.blr97@gmail.com>
Date: Thu, 25 Jun 2020 19:06:25 +0530
Subject: configure_file: Add option to control file permissions transfer to
 copy

Issue: #20866
---
 Source/cmMakefile.cxx | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'Source/cmMakefile.cxx')

diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index d34259f3f5..283f57d3b1 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -34,6 +34,7 @@
 #include "cmExecutionStatus.h"
 #include "cmExpandedCommandArgument.h" // IWYU pragma: keep
 #include "cmExportBuildFileGenerator.h"
+#include "cmFSPermissions.h"
 #include "cmFileLockPool.h"
 #include "cmFunctionBlocker.h"
 #include "cmGeneratedFileStream.h"
@@ -69,6 +70,8 @@
 
 class cmMessenger;
 
+using namespace cmFSPermissions;
+
 cmDirectoryId::cmDirectoryId(std::string s)
   : String(std::move(s))
 {
@@ -3997,6 +4000,7 @@ void cmMakefile::ConfigureString(const std::string& input, std::string& output,
 int cmMakefile::ConfigureFile(const std::string& infile,
                               const std::string& outfile, bool copyonly,
                               bool atOnly, bool escapeQuotes,
+                              bool use_source_permissions,
                               cmNewLineStyle newLine)
 {
   int res = 1;
@@ -4020,7 +4024,13 @@ int cmMakefile::ConfigureFile(const std::string& infile,
   this->AddCMakeOutputFile(soutfile);
 
   mode_t perm = 0;
-  cmSystemTools::GetPermissions(sinfile, perm);
+  if (!use_source_permissions) {
+    perm = perm | mode_owner_read | mode_owner_write | mode_group_read |
+      mode_world_read;
+  } else {
+    cmSystemTools::GetPermissions(sinfile, perm);
+  }
+
   std::string::size_type pos = soutfile.rfind('/');
   if (pos != std::string::npos) {
     std::string path = soutfile.substr(0, pos);
@@ -4033,6 +4043,11 @@ int cmMakefile::ConfigureFile(const std::string& infile,
                          cmSystemTools::GetLastSystemError());
       return 0;
     }
+    if (!cmSystemTools::SetPermissions(soutfile, perm)) {
+      this->IssueMessage(MessageType::FATAL_ERROR,
+                         cmSystemTools::GetLastSystemError());
+      return 0;
+    }
   } else {
     std::string newLineCharacters;
     std::ios::openmode omode = std::ios::out | std::ios::trunc;
-- 
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