Update littlefs to v2.11.2 (#3270)

Author: josesimoes

.devcontainer/All/Dockerfile.All

@@ -1 +1 @@
-FROM ghcr.io/nanoframework/dev-container-all:v2.59
+FROM ghcr.io/nanoframework/dev-container-all:v2.60

.devcontainer/All/Dockerfile.All.SRC

@@ -103,7 +103,7 @@ RUN git clone --branch v6.5.0.202601_rel --recursive https://github.com/eclipse-
 
 # Clone dependent repos (mbedtls, fatfs and littlefs)
 RUN git clone --branch R0.15a https://github.com/abbrev/fatfs.git --depth 1 ./sources/fatfs \
-    && git clone --branch v2.9.3 https://github.com/littlefs-project/littlefs --depth 1 ./sources/littlefs \
+    && git clone --branch v2.11.2 https://github.com/littlefs-project/littlefs --depth 1 ./sources/littlefs \
     && git clone --branch mbedtls-3.6.5 https://github.com/ARMmbed/mbedtls.git --depth 1 ./sources/mbedtls \
     && cd ./sources/mbedtls \
     && git submodule update --init --recursive

.devcontainer/All/scripts/git-pull-repos.sh

@@ -27,7 +27,7 @@ git pull origin 5.5.1
 cd /sources/lwip
 git pull origin STABLE-2_1_3_RELEASE
 cd /sources/littlefs
-git pull origin v2.9.3
+git pull origin v2.11.2
 cd /sources/SimpleLinkCC32
 git pull origin 4.10.00.07
 cd /sources/SimpleLinkCC13

.devcontainer/ChibiOS/Dockerfile.ChibiOS

@@ -1 +1 @@
-FROM ghcr.io/nanoframework/dev-container-chibios:v1.36
+FROM ghcr.io/nanoframework/dev-container-chibios:v1.37

.devcontainer/ChibiOS/Dockerfile.ChibiOS.SRC

@@ -66,7 +66,7 @@ RUN git clone --branch nf-build https://github.com/nanoframework/STM32CubeL4.git
 
 # Clone dependent repos (mbedtls, fatfs and littlefs etc.)
 RUN git clone --branch R0.15a https://github.com/abbrev/fatfs.git --depth 1 ./sources/fatfs \
-    && git clone --branch v2.9.3 https://github.com/littlefs-project/littlefs --depth 1 ./sources/littlefs \
+    && git clone --branch v2.11.2 https://github.com/littlefs-project/littlefs --depth 1 ./sources/littlefs \
     && git clone --branch STABLE-2_1_3_RELEASE https://github.com/lwip-tcpip/lwip.git --depth 1 ./sources/lwip \
     && git clone --branch mbedtls-3.6.5 https://github.com/ARMmbed/mbedtls.git --depth 1 ./sources/mbedtls \
     && cd ./sources/mbedtls \

.devcontainer/ThreadX/Dockerfile.ThreadX

@@ -1 +1 @@
-FROM ghcr.io/nanoframework/dev-container-threadx:v1.36
+FROM ghcr.io/nanoframework/dev-container-threadx:v1.37

.devcontainer/ThreadX/Dockerfile.ThreadX.SRC

@@ -68,7 +68,7 @@ RUN git clone --branch v6.5.0.202601_rel --recursive https://github.com/eclipse-
 
 # Clone dependent repos (mbedtls, fatfs and littlefs)
 RUN git clone --branch R0.15a https://github.com/abbrev/fatfs.git --depth 1 ./sources/fatfs \
-    && git clone --branch v2.9.3 https://github.com/littlefs-project/littlefs --depth 1 ./sources/littlefs \
+    && git clone --branch v2.11.2 https://github.com/littlefs-project/littlefs --depth 1 ./sources/littlefs \
     && git clone --branch mbedtls-3.6.5 https://github.com/ARMmbed/mbedtls.git --depth 1 ./sources/mbedtls \
     && cd ./sources/mbedtls \
     && git submodule update --init --recursive

azure-pipelines.yml

@@ -53,7 +53,7 @@ resources:
       type: github
       name: littlefs-project/littlefs
       endpoint: nanoframework
-      ref: refs/tags/v2.9.3
+      ref: refs/tags/v2.11.2
 
 jobs:
   ##############################

targets/ChibiOS/CMakeLists.txt

@@ -357,7 +357,7 @@ if(NF_FEATURE_USE_LITTLEFS_OPTION)
     if(LITTLEFS_VERSION_EMPTY)
         # no littlefs version actualy specified, must be empty which is fine, we'll default to a known good version
         # WHEN CHANGING THIS MAKE SURE TO UPDATE THE DEV CONTAINERS AND PIPELINE YAML
-        set(LITTLEFS_VERSION_TAG "v2.9.3")
+        set(LITTLEFS_VERSION_TAG "v2.11.2")
     else()
         # set version 
         set(LITTLEFS_VERSION_TAG ${LITTLEFS_VERSION})

targets/ChibiOS/_littlefs/littlefs_FS_Driver.cpp

@@ -1160,7 +1160,8 @@ static int NormalizePath(const char *path, char *buffer, size_t bufferSize)
     *bufferP = '\0';
 
     // remove trailing slash, if any
-    if (bufferP[-1] == '/')
+    // guard against undefined behavior: only check bufferP[-1] when buffer is non-empty
+    if (bufferP > buffer && bufferP[-1] == '/')
     {
         bufferP--;
         *bufferP = '\0';
@@ -1172,6 +1173,13 @@ static int NormalizePath(const char *path, char *buffer, size_t bufferSize)
         memmove(buffer, buffer + 1, hal_strlen_s(buffer));
     }
 
+    // use "/" instead to reference the root
+    if (buffer[0] == '\0')
+    {
+        buffer[0] = '/';
+        buffer[1] = '\0';
+    }
+
     return 0;
 }