Added fs.copy_properties and fixed fs.copy_file and modelfunction.write_file_with_audit to keep file properties.

2 files changed, 13 insertions, 0 deletions

diff --git a/lib/fs.lua b/lib/fs.lua
index 872e62a..cfc387a 100644
--- a/lib/fs.lua
+++ b/lib/fs.lua
@@ -77,6 +77,17 @@ function create_file ( path )
 	return is_file(path)
 end
 
+-- Copies the permissions and ownership of one file to another (if they exist and are the same type)
+function copy_properties(source, dest)
+	if posix.stat(source or "", "type") == posix.stat(dest or "", "type") then
+		local stats = posix.stat(source)
+		posix.chmod(dest, stats.mode)
+		posix.chown(dest, stats.uid, stats.gid)
+		return true
+	end
+	return false
+end
+
 -- Copies a file to a directory or new filename (creating the directory if necessary)
 -- fails if new file is already a directory
 function copy_file(oldpath, newpath)
@@ -90,6 +101,7 @@ function copy_file(oldpath, newpath)
 	new:write(old:read("*a"))
 	new:close()
 	old:close()
+	copy_properties(oldpath, newpath)
 	return is_file(newpath)
 end
 
diff --git a/lib/modelfunctions.lua b/lib/modelfunctions.lua
index 70f1412..3a02bd5 100644
--- a/lib/modelfunctions.lua
+++ b/lib/modelfunctions.lua
@@ -205,6 +205,7 @@ function write_file_with_audit (self, path, str)
 		end
 
 		fs.write_file(tmpfile,str)
+		fs.copy_properties(path, tmpfile)
 
 		if (type(pre) == "string" and #pre) then
 			os.execute(pre)