Fix TOCTOU in lm_main.c

[rdkdevpilot]

Automated Fix for TOCTOU

File: /source/lm/lm_main.c
Line: 812

Defect Details

Time of check time of use

Fix Applied

This automated fix addresses the TOCTOU defect by:
The fix correctly addresses the TOCTOU defect (CID 257720) by eliminating the access() check and relying solely on open() with O_CREAT|O_EXCL for atomic file creation. The logging/telemetry calls are properly gated on the open() return value, preserving the original intent of only logging when the flag file is first created. The resource leak (CID 257716) is also properly handled with close(fd) guarded by fd >= 0. No new defects are introduced.

Validation

• ✅ LLM review validation passed
• ✅ Syntax validation passed (if applicable)