Replace LittleFS with MockFS

2026-01-23 17:51:59 +01:00
parent 028f25b942
commit bde2d5a1ca
9 changed files with 1130 additions and 7853 deletions
@@ -0,0 +1,109 @@
+#ifndef MOCKFS_INCLUDED
+#define MOCKFS_INCLUDED
+
+#include <stdbool.h>
+
+#define MOCKFS_NAME_SIZE (1<<7)
+
+enum {
+    MOCKFS_ERRNO_SUCCESS = 0,
+    MOCKFS_ERRNO_NOENT = -1,     // No such file or directory
+    MOCKFS_ERRNO_PERM = -2,      // Operation not permitted
+    MOCKFS_ERRNO_NOMEM = -3,     // Out of memory
+    MOCKFS_ERRNO_NOTDIR = -4,    // Not a directory
+    MOCKFS_ERRNO_ISDIR = -5,     // Is a directory
+    MOCKFS_ERRNO_INVAL = -6,     // Invalid argument
+    MOCKFS_ERRNO_NOTEMPTY = -7,  // Directory not empty
+    MOCKFS_ERRNO_NOSPC = -8,     // No space left on device
+    MOCKFS_ERRNO_EXIST = -9,     // File exists
+    MOCKFS_ERRNO_BUSY  = -10,
+    MOCKFS_ERRNO_BADF  = -11,
+};
+
+enum {
+    MOCKFS_O_RDONLY = 0x00,
+    MOCKFS_O_WRONLY = 0x01,
+    MOCKFS_O_RDWR   = 0x02,
+    MOCKFS_O_CREAT  = 0x40,
+    MOCKFS_O_EXCL   = 0x80,
+    MOCKFS_O_TRUNC  = 0x200,
+    MOCKFS_O_APPEND = 0x400,
+};
+
+enum {
+    MOCKFS_SEEK_SET = 0,
+    MOCKFS_SEEK_CUR = 1,
+    MOCKFS_SEEK_END = 2,
+};
+
+#define BYTE_CHUNK_SIZE 128
+
+typedef struct ByteChunk ByteChunk;
+struct ByteChunk {
+    ByteChunk *next;
+    char       data[BYTE_CHUNK_SIZE];
+};
+
+typedef struct {
+    int used;
+    int tail_used;
+    ByteChunk *head;
+    ByteChunk *tail;
+} ByteBuffer;
+
+typedef struct MockFS_Entity MockFS_Entity;
+
+typedef struct {
+    char *mem;
+    int   len;
+    int   off;
+    MockFS_Entity *root;
+    MockFS_Entity *entity_free_list;
+    ByteChunk     *chunk_free_list;
+} MockFS;
+
+typedef struct {
+    MockFS*        mfs;
+    MockFS_Entity* entity;
+    int            offset;
+    int            flags;
+} MockFS_OpenFile;
+
+typedef struct {
+    MockFS*        mfs;
+    MockFS_Entity* entity;
+    MockFS_Entity* child;
+    int idx;
+} MockFS_OpenDir;
+
+typedef struct {
+    char name[MOCKFS_NAME_SIZE];
+    int  name_len;
+    bool is_dir;
+} MockFS_Dirent;
+
+int  mockfs_init(MockFS **mfs, char *mem, int len);
+void mockfs_free(MockFS *mfs);
+
+int  mockfs_open(MockFS *mfs, char *path, int path_len, int flags, MockFS_OpenFile *open_file);
+int  mockfs_open_dir(MockFS *mfs, char *path, int path_len, MockFS_OpenDir *open_dir);
+
+int mockfs_file_size(MockFS_OpenFile *open_file);
+
+void mockfs_close_file(MockFS_OpenFile *open_file);
+void mockfs_close_dir(MockFS_OpenDir *open_dir);
+
+int mockfs_read(MockFS_OpenFile *open_file, char *dst, int len);
+int mockfs_write(MockFS_OpenFile *open_file, char *src, int len);
+int mockfs_read_dir(MockFS_OpenDir *open_dir, MockFS_Dirent *dirent);
+
+int mockfs_sync(MockFS_OpenFile *open_file);
+int mockfs_lseek(MockFS_OpenFile *open_file, int offset, int whence);
+
+int mockfs_remove(MockFS *mfs, char *path, int path_len, bool recursive);
+
+int mockfs_mkdir(MockFS *mfs, char *path, int path_len);
+
+int mockfs_rename(MockFS *mfs, char *old_path, int old_path_len, char *new_path, int new_path_len);
+
+#endif // MOCKFS_INCLUDED