From d791576c3f9913be338da9fb2a66f7ee20a49cdf Mon Sep 17 00:00:00 2001
From: Christopher Haster <geky@geky.net>
Date: Thu, 5 Jun 2025 15:46:49 -0500
Subject: [PATCH] rdonly: Added missing isrdonly flag overrides when
 LFS3_RDONLY

I did override lfs3_o_isrdonly, but missed lfs3_m_isrdonly and
lfs3_t_isrdonly.

These aren't strictly necessary (asserts force rdonly flags to be set
correctly), but can save code by trimming unreachable code paths.

That being said, currently no observable code savings:

                  code          stack          ctx
  rdonly before: 10664            840          524
  rdonly after:  10664 (+0.0%)    840 (+0.0%)  524 (+0.0%)

But I noticed while toying around with a different way of pruning
LFS3_TSTATE_OMDIRS/OBTREE and wanted to make sure other code savings
weren't dragged in.
---
 lfs3.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lfs3.c b/lfs3.c
index 0d68ab78..53adcad1 100644
--- a/lfs3.c
+++ b/lfs3.c
@@ -6926,7 +6926,12 @@ static inline bool lfs3_a_islazy(uint32_t flags) {
 
 // traversal flags
 static inline bool lfs3_t_isrdonly(uint32_t flags) {
+    (void)flags;
+    #ifndef LFS3_RDONLY
     return flags & LFS3_T_RDONLY;
+    #else
+    return true;
+    #endif
 }
 
 static inline bool lfs3_t_ismtreeonly(uint32_t flags) {
@@ -7018,7 +7023,12 @@ static inline uint32_t lfs3_t_swapdirty(uint32_t flags) {
 
 // mount flags
 static inline bool lfs3_m_isrdonly(uint32_t flags) {
+    (void)flags;
+    #ifndef LFS3_RDONLY
     return flags & LFS3_M_RDONLY;
+    #else
+    return true;
+    #endif
 }
 
 #ifdef LFS3_REVDBG