add errors for project lock

2 files changed, 5 insertions, 4 deletions

diff --git a/xmake/core/project/project.lua b/xmake/core/project/project.lua
index 9ec7bc0bf..0fd4816e6 100644
--- a/xmake/core/project/project.lua
+++ b/xmake/core/project/project.lua
@@ -808,12 +808,13 @@ end
 
 -- get the filelock of the whole project directory
 function project.filelock()
+    local errors
     local filelock = project._FILELOCK
     if filelock == nil then
-        filelock = io.openlock(path.join(config.directory(), "project.lock"))
+        filelock, errors = io.openlock(path.join(config.directory(), "project.lock"))
         project._FILELOCK = filelock 
     end
-    return filelock
+    return filelock, errors
 end
 
 -- get the project info from the given name
diff --git a/xmake/core/sandbox/modules/import/core/project/project.lua b/xmake/core/sandbox/modules/import/core/project/project.lua
index 1ea9c96b5..4bd9b2440 100644
--- a/xmake/core/sandbox/modules/import/core/project/project.lua
+++ b/xmake/core/sandbox/modules/import/core/project/project.lua
@@ -144,9 +144,9 @@ end
 
 -- get the filelock of the whole project directory
 function sandbox_core_project.filelock()
-    local filelock = project.filelock()
+    local filelock, errors = project.filelock()
     if not filelock then
-        raise("cannot create the project lock!")
+        raise("cannot create the project lock, %s!", errors or "unknown errors")
     end
     return filelock
 end