LFS nits

mongoose.h

@@ -103,8 +103,9 @@ extern "C" {
 #include <sys/types.h>
 #include <time.h>
 
+#ifndef MG_PATH_MAX
 #define MG_PATH_MAX 100
-#define MG_ENABLE_DIRLIST 0
+#endif
 
 #endif
 
@@ -127,8 +128,9 @@ extern "C" {
 #include <time.h>
 #include <unistd.h>
 
+#ifndef MG_PATH_MAX
 #define MG_PATH_MAX 100
-#define MG_ENABLE_DIRLIST 0
+#endif
 
 #endif
 
@@ -158,10 +160,6 @@ extern "C" {
 #define MG_PATH_MAX 100
 #endif
 
-#ifndef MG_ENABLE_DIRLIST
-#define MG_ENABLE_DIRLIST 0
-#endif
-
 
 #ifndef MG_ENABLE_TCPIP
 #define MG_ENABLE_TCPIP 1  // Enable built-in TCP/IP stack
@@ -1364,7 +1362,7 @@ struct timeval {
 #endif
 
 #ifndef MG_ENABLE_DIRLIST
-#define MG_ENABLE_DIRLIST 0
+#define MG_ENABLE_DIRLIST MG_ENABLE_LFS
 #endif
 
 #ifndef MG_ENABLE_CUSTOM_RANDOM
@@ -1416,7 +1414,7 @@ struct timeval {
 #endif
 
 #ifndef MG_ENABLE_POSIX_FS
-#define MG_ENABLE_POSIX_FS 0
+#define MG_ENABLE_POSIX_FS MG_ENABLE_LFS
 #endif
 
 #ifndef MG_INVALID_SOCKET
@@ -1929,6 +1927,7 @@ void mg_timer_poll(struct mg_timer **head, uint64_t new_ms);
 
 
 
+
 // Flags returned by mg_fs.st() and passed to mg_fs.open().
 enum { MG_FS_READ = 1, MG_FS_WRITE = 2, MG_FS_DIR = 4, MG_FS_EXCL = 8 };
 
@@ -1966,6 +1965,7 @@ void mg_fs_close(struct mg_fd *fd);
 
 // Sequential directory iterator. Call repeatedly with the same buf/len;
 // each call fills buf with the next entry name. Returns false when done.
+// Note: make sure buf[0] == 0 before the first call
 bool mg_fs_ls(struct mg_fs *fs, const char *path, char *buf, size_t len);
 
 // Reads the entire file into a heap-allocated buffer. The returned mg_str is
@@ -2005,6 +2005,26 @@ struct mg_str mg_unpacked(const char *path);
 extern const struct mg_mem_file mg_packed_files[];
 
 
+#if MG_ENABLE_LFS
+#include <fcntl.h>
+#include <littlefs/lfs.h>
+
+#ifndef DT_DIR
+#define DT_DIR 4
+#endif
+#ifndef DT_REG
+#define DT_REG 8
+#endif
+
+struct dirent {
+  char d_name[LFS_NAME_MAX + 1];
+  unsigned char d_type;
+};
+
+typedef struct mg_lfs_fd  DIR;
+#endif
+
+