diff options
Diffstat (limited to 'libiot/spiffs/spiffs_hydrogen.c')
| -rw-r--r-- | libiot/spiffs/spiffs_hydrogen.c | 1405 |
1 files changed, 1405 insertions, 0 deletions
diff --git a/libiot/spiffs/spiffs_hydrogen.c b/libiot/spiffs/spiffs_hydrogen.c new file mode 100644 index 0000000..9ff3e7a --- /dev/null +++ b/libiot/spiffs/spiffs_hydrogen.c @@ -0,0 +1,1405 @@ +/* + * spiffs_hydrogen.c + * + * Created on: Jun 16, 2013 + * Author: petera + */ + +#include "spiffs.h" +#include "spiffs_nucleus.h" + +#if SPIFFS_FILEHDL_OFFSET +#define SPIFFS_FH_OFFS(fs, fh) ((fh) != 0 ? ((fh) + (fs)->cfg.fh_ix_offset) : 0) +#define SPIFFS_FH_UNOFFS(fs, fh) ((fh) != 0 ? ((fh) - (fs)->cfg.fh_ix_offset) : 0) +#else +#define SPIFFS_FH_OFFS(fs, fh) (fh) +#define SPIFFS_FH_UNOFFS(fs, fh) (fh) +#endif + +#if SPIFFS_CACHE == 1 +static s32_t spiffs_fflush_cache(spiffs *fs, spiffs_file fh); +#endif + +#if SPIFFS_BUFFER_HELP +u32_t SPIFFS_buffer_bytes_for_filedescs(spiffs *fs, u32_t num_descs) { + return num_descs * sizeof(spiffs_fd); +} +#if SPIFFS_CACHE +u32_t SPIFFS_buffer_bytes_for_cache(spiffs *fs, u32_t num_pages) { + return sizeof(spiffs_cache) + num_pages * (sizeof(spiffs_cache_page) + SPIFFS_CFG_LOG_PAGE_SZ(fs)); +} +#endif +#endif + +u8_t SPIFFS_mounted(spiffs *fs) { + return SPIFFS_CHECK_MOUNT(fs); +} + +s32_t SPIFFS_format(spiffs *fs) { +#if SPIFFS_READ_ONLY + (void)fs; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + if (SPIFFS_CHECK_MOUNT(fs)) { + fs->err_code = SPIFFS_ERR_MOUNTED; + return -1; + } + + s32_t res; + SPIFFS_LOCK(fs); + + spiffs_block_ix bix = 0; + while (bix < fs->block_count) { + fs->max_erase_count = 0; + res = spiffs_erase_block(fs, bix); + if (res != SPIFFS_OK) { + res = SPIFFS_ERR_ERASE_FAIL; + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + bix++; + } + + SPIFFS_UNLOCK(fs); + + return 0; +#endif // SPIFFS_READ_ONLY +} + +#if SPIFFS_USE_MAGIC && SPIFFS_USE_MAGIC_LENGTH && SPIFFS_SINGLETON==0 + +s32_t SPIFFS_probe_fs(spiffs_config *config) { + s32_t res = spiffs_probe(config); + return res; +} + +#endif // SPIFFS_USE_MAGIC && SPIFFS_USE_MAGIC_LENGTH && SPIFFS_SINGLETON==0 + +s32_t SPIFFS_mount(spiffs *fs, spiffs_config *config, u8_t *work, + u8_t *fd_space, u32_t fd_space_size, + void *cache, u32_t cache_size, + spiffs_check_callback check_cb_f) { + void *user_data; + SPIFFS_LOCK(fs); + user_data = fs->user_data; + memset(fs, 0, sizeof(spiffs)); + memcpy(&fs->cfg, config, sizeof(spiffs_config)); + fs->user_data = user_data; + fs->block_count = SPIFFS_CFG_PHYS_SZ(fs) / SPIFFS_CFG_LOG_BLOCK_SZ(fs); + fs->work = &work[0]; + fs->lu_work = &work[SPIFFS_CFG_LOG_PAGE_SZ(fs)]; + memset(fd_space, 0, fd_space_size); + // align fd_space pointer to pointer size byte boundary + u8_t ptr_size = sizeof(void*); + u8_t addr_lsb = ((u8_t)(intptr_t)fd_space) & (ptr_size-1); + if (addr_lsb) { + fd_space += (ptr_size-addr_lsb); + fd_space_size -= (ptr_size-addr_lsb); + } + fs->fd_space = fd_space; + fs->fd_count = (fd_space_size/sizeof(spiffs_fd)); + + // align cache pointer to 4 byte boundary + addr_lsb = ((u8_t)(intptr_t)cache) & (ptr_size-1); + if (addr_lsb) { + u8_t *cache_8 = (u8_t *)cache; + cache_8 += (ptr_size-addr_lsb); + cache = cache_8; + cache_size -= (ptr_size-addr_lsb); + } + if (cache_size & (ptr_size-1)) { + cache_size -= (cache_size & (ptr_size-1)); + } + +#if SPIFFS_CACHE + fs->cache = cache; + fs->cache_size = (cache_size > (SPIFFS_CFG_LOG_PAGE_SZ(fs)*32)) ? SPIFFS_CFG_LOG_PAGE_SZ(fs)*32 : cache_size; + spiffs_cache_init(fs); +#endif + + s32_t res; + +#if SPIFFS_USE_MAGIC + res = SPIFFS_CHECK_MAGIC_POSSIBLE(fs) ? SPIFFS_OK : SPIFFS_ERR_MAGIC_NOT_POSSIBLE; + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); +#endif + + fs->config_magic = SPIFFS_CONFIG_MAGIC; + + res = spiffs_obj_lu_scan(fs); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_DBG("page index byte len: "_SPIPRIi"\n", (u32_t)SPIFFS_CFG_LOG_PAGE_SZ(fs)); + SPIFFS_DBG("object lookup pages: "_SPIPRIi"\n", (u32_t)SPIFFS_OBJ_LOOKUP_PAGES(fs)); + SPIFFS_DBG("page pages per block: "_SPIPRIi"\n", (u32_t)SPIFFS_PAGES_PER_BLOCK(fs)); + SPIFFS_DBG("page header length: "_SPIPRIi"\n", (u32_t)sizeof(spiffs_page_header)); + SPIFFS_DBG("object header index entries: "_SPIPRIi"\n", (u32_t)SPIFFS_OBJ_HDR_IX_LEN(fs)); + SPIFFS_DBG("object index entries: "_SPIPRIi"\n", (u32_t)SPIFFS_OBJ_IX_LEN(fs)); + SPIFFS_DBG("available file descriptors: "_SPIPRIi"\n", (u32_t)fs->fd_count); + SPIFFS_DBG("free blocks: "_SPIPRIi"\n", (u32_t)fs->free_blocks); + + fs->check_cb_f = check_cb_f; + + fs->mounted = 1; + + SPIFFS_UNLOCK(fs); + + return 0; +} + +void SPIFFS_unmount(spiffs *fs) { + if (!SPIFFS_CHECK_CFG(fs) || !SPIFFS_CHECK_MOUNT(fs)) return; + SPIFFS_LOCK(fs); + u32_t i; + spiffs_fd *fds = (spiffs_fd *)fs->fd_space; + for (i = 0; i < fs->fd_count; i++) { + spiffs_fd *cur_fd = &fds[i]; + if (cur_fd->file_nbr != 0) { +#if SPIFFS_CACHE + (void)spiffs_fflush_cache(fs, cur_fd->file_nbr); +#endif + spiffs_fd_return(fs, cur_fd->file_nbr); + } + } + fs->mounted = 0; + + SPIFFS_UNLOCK(fs); +} + +s32_t SPIFFS_errno(spiffs *fs) { + return fs->err_code; +} + +void SPIFFS_clearerr(spiffs *fs) { + fs->err_code = SPIFFS_OK; +} + +s32_t SPIFFS_creat(spiffs *fs, const char *path, spiffs_mode mode) { +#if SPIFFS_READ_ONLY + (void)fs; (void)path; (void)mode; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + (void)mode; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + if (strlen(path) > SPIFFS_OBJ_NAME_LEN - 1) { + SPIFFS_API_CHECK_RES(fs, SPIFFS_ERR_NAME_TOO_LONG); + } + SPIFFS_LOCK(fs); + spiffs_obj_id obj_id; + s32_t res; + + res = spiffs_obj_lu_find_free_obj_id(fs, &obj_id, (const u8_t*)path); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + res = spiffs_object_create(fs, obj_id, (const u8_t*)path, 0, SPIFFS_TYPE_FILE, 0); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + SPIFFS_UNLOCK(fs); + return 0; +#endif // SPIFFS_READ_ONLY +} + +spiffs_file SPIFFS_open(spiffs *fs, const char *path, spiffs_flags flags, spiffs_mode mode) { + (void)mode; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + if (strlen(path) > SPIFFS_OBJ_NAME_LEN - 1) { + SPIFFS_API_CHECK_RES(fs, SPIFFS_ERR_NAME_TOO_LONG); + } + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + spiffs_page_ix pix; + +#if SPIFFS_READ_ONLY + // not valid flags in read only mode + flags &= ~(SPIFFS_WRONLY | SPIFFS_CREAT | SPIFFS_TRUNC); +#endif // SPIFFS_READ_ONLY + + s32_t res = spiffs_fd_find_new(fs, &fd, path); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_find_object_index_header_by_name(fs, (const u8_t*)path, &pix); + if ((flags & SPIFFS_O_CREAT) == 0) { + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + if (res == SPIFFS_OK && + (flags & (SPIFFS_O_CREAT | SPIFFS_O_EXCL)) == (SPIFFS_O_CREAT | SPIFFS_O_EXCL)) { + // creat and excl and file exists - fail + res = SPIFFS_ERR_FILE_EXISTS; + spiffs_fd_return(fs, fd->file_nbr); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + if ((flags & SPIFFS_O_CREAT) && res == SPIFFS_ERR_NOT_FOUND) { +#if !SPIFFS_READ_ONLY + spiffs_obj_id obj_id; + // no need to enter conflicting name here, already looked for it above + res = spiffs_obj_lu_find_free_obj_id(fs, &obj_id, 0); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + res = spiffs_object_create(fs, obj_id, (const u8_t*)path, 0, SPIFFS_TYPE_FILE, &pix); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + flags &= ~SPIFFS_O_TRUNC; +#endif // !SPIFFS_READ_ONLY + } else { + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + res = spiffs_object_open_by_page(fs, pix, fd, flags, mode); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); +#if !SPIFFS_READ_ONLY + if (flags & SPIFFS_O_TRUNC) { + res = spiffs_object_truncate(fd, 0, 0); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } +#endif // !SPIFFS_READ_ONLY + + fd->fdoffset = 0; + + SPIFFS_UNLOCK(fs); + + return SPIFFS_FH_OFFS(fs, fd->file_nbr); +} + +spiffs_file SPIFFS_open_by_dirent(spiffs *fs, struct spiffs_dirent *e, spiffs_flags flags, spiffs_mode mode) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + + s32_t res = spiffs_fd_find_new(fs, &fd, 0); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_open_by_page(fs, e->pix, fd, flags, mode); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); +#if !SPIFFS_READ_ONLY + if (flags & SPIFFS_O_TRUNC) { + res = spiffs_object_truncate(fd, 0, 0); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } +#endif // !SPIFFS_READ_ONLY + + fd->fdoffset = 0; + + SPIFFS_UNLOCK(fs); + + return SPIFFS_FH_OFFS(fs, fd->file_nbr); +} + +spiffs_file SPIFFS_open_by_page(spiffs *fs, spiffs_page_ix page_ix, spiffs_flags flags, spiffs_mode mode) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + + s32_t res = spiffs_fd_find_new(fs, &fd, 0); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if (SPIFFS_IS_LOOKUP_PAGE(fs, page_ix)) { + res = SPIFFS_ERR_NOT_A_FILE; + spiffs_fd_return(fs, fd->file_nbr); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + res = spiffs_object_open_by_page(fs, page_ix, fd, flags, mode); + if (res == SPIFFS_ERR_IS_FREE || + res == SPIFFS_ERR_DELETED || + res == SPIFFS_ERR_NOT_FINALIZED || + res == SPIFFS_ERR_NOT_INDEX || + res == SPIFFS_ERR_INDEX_SPAN_MISMATCH) { + res = SPIFFS_ERR_NOT_A_FILE; + } + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + +#if !SPIFFS_READ_ONLY + if (flags & SPIFFS_O_TRUNC) { + res = spiffs_object_truncate(fd, 0, 0); + if (res < SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } +#endif // !SPIFFS_READ_ONLY + + fd->fdoffset = 0; + + SPIFFS_UNLOCK(fs); + + return SPIFFS_FH_OFFS(fs, fd->file_nbr); +} + +static s32_t spiffs_hydro_read(spiffs *fs, spiffs_file fh, void *buf, s32_t len) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + s32_t res; + + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if ((fd->flags & SPIFFS_O_RDONLY) == 0) { + res = SPIFFS_ERR_NOT_READABLE; + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + if (fd->size == SPIFFS_UNDEFINED_LEN && len > 0) { + // special case for zero sized files + res = SPIFFS_ERR_END_OF_OBJECT; + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + +#if SPIFFS_CACHE_WR + spiffs_fflush_cache(fs, fh); +#endif + + if (fd->fdoffset + len >= fd->size) { + // reading beyond file size + s32_t avail = fd->size - fd->fdoffset; + if (avail <= 0) { + SPIFFS_API_CHECK_RES_UNLOCK(fs, SPIFFS_ERR_END_OF_OBJECT); + } + res = spiffs_object_read(fd, fd->fdoffset, avail, (u8_t*)buf); + if (res == SPIFFS_ERR_END_OF_OBJECT) { + fd->fdoffset += avail; + SPIFFS_UNLOCK(fs); + return avail; + } else { + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + len = avail; + } + } else { + // reading within file size + res = spiffs_object_read(fd, fd->fdoffset, len, (u8_t*)buf); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + fd->fdoffset += len; + + SPIFFS_UNLOCK(fs); + + return len; +} + +s32_t SPIFFS_read(spiffs *fs, spiffs_file fh, void *buf, s32_t len) { + s32_t res = spiffs_hydro_read(fs, fh, buf, len); + if (res == SPIFFS_ERR_END_OF_OBJECT) { + res = 0; + } + return res; +} + + +#if !SPIFFS_READ_ONLY +static s32_t spiffs_hydro_write(spiffs *fs, spiffs_fd *fd, void *buf, u32_t offset, s32_t len) { + (void)fs; + s32_t res = SPIFFS_OK; + s32_t remaining = len; + if (fd->size != SPIFFS_UNDEFINED_LEN && offset < fd->size) { + s32_t m_len = MIN((s32_t)(fd->size - offset), len); + res = spiffs_object_modify(fd, offset, (u8_t *)buf, m_len); + SPIFFS_CHECK_RES(res); + remaining -= m_len; + u8_t *buf_8 = (u8_t *)buf; + buf_8 += m_len; + buf = buf_8; + offset += m_len; + } + if (remaining > 0) { + res = spiffs_object_append(fd, offset, (u8_t *)buf, remaining); + SPIFFS_CHECK_RES(res); + } + return len; + +} +#endif // !SPIFFS_READ_ONLY + +s32_t SPIFFS_write(spiffs *fs, spiffs_file fh, void *buf, s32_t len) { +#if SPIFFS_READ_ONLY + (void)fs; (void)fh; (void)buf; (void)len; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + s32_t res; + u32_t offset; + + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if ((fd->flags & SPIFFS_O_WRONLY) == 0) { + res = SPIFFS_ERR_NOT_WRITABLE; + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + if ((fd->flags & SPIFFS_O_APPEND)) { + fd->fdoffset = fd->size == SPIFFS_UNDEFINED_LEN ? 0 : fd->size; + } + + offset = fd->fdoffset; + +#if SPIFFS_CACHE_WR + if (fd->cache_page == 0) { + // see if object id is associated with cache already + fd->cache_page = spiffs_cache_page_get_by_fd(fs, fd); + } +#endif + if (fd->flags & SPIFFS_O_APPEND) { + if (fd->size == SPIFFS_UNDEFINED_LEN) { + offset = 0; + } else { + offset = fd->size; + } +#if SPIFFS_CACHE_WR + if (fd->cache_page) { + offset = MAX(offset, fd->cache_page->offset + fd->cache_page->size); + } +#endif + } + +#if SPIFFS_CACHE_WR + if ((fd->flags & SPIFFS_O_DIRECT) == 0) { + if (len < (s32_t)SPIFFS_CFG_LOG_PAGE_SZ(fs)) { + // small write, try to cache it + u8_t alloc_cpage = 1; + if (fd->cache_page) { + // have a cached page for this fd already, check cache page boundaries + if (offset < fd->cache_page->offset || // writing before cache + offset > fd->cache_page->offset + fd->cache_page->size || // writing after cache + offset + len > fd->cache_page->offset + SPIFFS_CFG_LOG_PAGE_SZ(fs)) // writing beyond cache page + { + // boundary violation, write back cache first and allocate new + SPIFFS_CACHE_DBG("CACHE_WR_DUMP: dumping cache page "_SPIPRIpg" for fd "_SPIPRIfd":"_SPIPRIid", boundary viol, offs:"_SPIPRIi" size:"_SPIPRIi"\n", + fd->cache_page->ix, fd->file_nbr, fd->obj_id, fd->cache_page->offset, fd->cache_page->size); + res = spiffs_hydro_write(fs, fd, + spiffs_get_cache_page(fs, spiffs_get_cache(fs), fd->cache_page->ix), + fd->cache_page->offset, fd->cache_page->size); + spiffs_cache_fd_release(fs, fd->cache_page); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } else { + // writing within cache + alloc_cpage = 0; + } + } + + if (alloc_cpage) { + fd->cache_page = spiffs_cache_page_allocate_by_fd(fs, fd); + if (fd->cache_page) { + fd->cache_page->offset = offset; + fd->cache_page->size = 0; + SPIFFS_CACHE_DBG("CACHE_WR_ALLO: allocating cache page "_SPIPRIpg" for fd "_SPIPRIfd":"_SPIPRIid"\n", + fd->cache_page->ix, fd->file_nbr, fd->obj_id); + } + } + + if (fd->cache_page) { + u32_t offset_in_cpage = offset - fd->cache_page->offset; + SPIFFS_CACHE_DBG("CACHE_WR_WRITE: storing to cache page "_SPIPRIpg" for fd "_SPIPRIfd":"_SPIPRIid", offs "_SPIPRIi":"_SPIPRIi" len "_SPIPRIi"\n", + fd->cache_page->ix, fd->file_nbr, fd->obj_id, + offset, offset_in_cpage, len); + spiffs_cache *cache = spiffs_get_cache(fs); + u8_t *cpage_data = spiffs_get_cache_page(fs, cache, fd->cache_page->ix); + memcpy(&cpage_data[offset_in_cpage], buf, len); + fd->cache_page->size = MAX(fd->cache_page->size, offset_in_cpage + len); + fd->fdoffset += len; + SPIFFS_UNLOCK(fs); + return len; + } else { + res = spiffs_hydro_write(fs, fd, buf, offset, len); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + fd->fdoffset += len; + SPIFFS_UNLOCK(fs); + return res; + } + } else { + // big write, no need to cache it - but first check if there is a cached write already + if (fd->cache_page) { + // write back cache first + SPIFFS_CACHE_DBG("CACHE_WR_DUMP: dumping cache page "_SPIPRIpg" for fd "_SPIPRIfd":"_SPIPRIid", big write, offs:"_SPIPRIi" size:"_SPIPRIi"\n", + fd->cache_page->ix, fd->file_nbr, fd->obj_id, fd->cache_page->offset, fd->cache_page->size); + res = spiffs_hydro_write(fs, fd, + spiffs_get_cache_page(fs, spiffs_get_cache(fs), fd->cache_page->ix), + fd->cache_page->offset, fd->cache_page->size); + spiffs_cache_fd_release(fs, fd->cache_page); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + // data written below + } + } + } +#endif + + res = spiffs_hydro_write(fs, fd, buf, offset, len); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + fd->fdoffset += len; + + SPIFFS_UNLOCK(fs); + + return res; +#endif // SPIFFS_READ_ONLY +} + +s32_t SPIFFS_lseek(spiffs *fs, spiffs_file fh, s32_t offs, int whence) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + s32_t res; + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + +#if SPIFFS_CACHE_WR + spiffs_fflush_cache(fs, fh); +#endif + + s32_t fileSize = fd->size == SPIFFS_UNDEFINED_LEN ? 0 : fd->size; + + switch (whence) { + case SPIFFS_SEEK_CUR: + offs = fd->fdoffset+offs; + break; + case SPIFFS_SEEK_END: + offs = fileSize + offs; + break; + } + + if ((offs > fileSize)) { + fd->fdoffset = fileSize; + res = SPIFFS_ERR_END_OF_OBJECT; + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + spiffs_span_ix data_spix = offs / SPIFFS_DATA_PAGE_SIZE(fs); + spiffs_span_ix objix_spix = SPIFFS_OBJ_IX_ENTRY_SPAN_IX(fs, data_spix); + if (fd->cursor_objix_spix != objix_spix) { + spiffs_page_ix pix; + res = spiffs_obj_lu_find_id_and_span( + fs, fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG, objix_spix, 0, &pix); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + fd->cursor_objix_spix = objix_spix; + fd->cursor_objix_pix = pix; + } + fd->fdoffset = offs; + + SPIFFS_UNLOCK(fs); + + return offs; +} + +s32_t SPIFFS_remove(spiffs *fs, const char *path) { +#if SPIFFS_READ_ONLY + (void)fs; (void)path; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + if (strlen(path) > SPIFFS_OBJ_NAME_LEN - 1) { + SPIFFS_API_CHECK_RES(fs, SPIFFS_ERR_NAME_TOO_LONG); + } + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + spiffs_page_ix pix; + s32_t res; + + res = spiffs_fd_find_new(fs, &fd, 0); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_find_object_index_header_by_name(fs, (const u8_t*)path, &pix); + if (res != SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_open_by_page(fs, pix, fd, 0,0); + if (res != SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_truncate(fd, 0, 1); + if (res != SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + return 0; +#endif // SPIFFS_READ_ONLY +} + +s32_t SPIFFS_fremove(spiffs *fs, spiffs_file fh) { +#if SPIFFS_READ_ONLY + (void)fs; (void)fh; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + s32_t res; + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if ((fd->flags & SPIFFS_O_WRONLY) == 0) { + res = SPIFFS_ERR_NOT_WRITABLE; + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + +#if SPIFFS_CACHE_WR + spiffs_cache_fd_release(fs, fd->cache_page); +#endif + + res = spiffs_object_truncate(fd, 0, 1); + + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + + return 0; +#endif // SPIFFS_READ_ONLY +} + +static s32_t spiffs_stat_pix(spiffs *fs, spiffs_page_ix pix, spiffs_file fh, spiffs_stat *s) { + (void)fh; + spiffs_page_object_ix_header objix_hdr; + spiffs_obj_id obj_id; + s32_t res =_spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ, fh, + SPIFFS_PAGE_TO_PADDR(fs, pix), sizeof(spiffs_page_object_ix_header), (u8_t *)&objix_hdr); + SPIFFS_API_CHECK_RES(fs, res); + + u32_t obj_id_addr = SPIFFS_BLOCK_TO_PADDR(fs, SPIFFS_BLOCK_FOR_PAGE(fs , pix)) + + SPIFFS_OBJ_LOOKUP_ENTRY_FOR_PAGE(fs, pix) * sizeof(spiffs_obj_id); + res =_spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_READ, fh, + obj_id_addr, sizeof(spiffs_obj_id), (u8_t *)&obj_id); + SPIFFS_API_CHECK_RES(fs, res); + + s->obj_id = obj_id & ~SPIFFS_OBJ_ID_IX_FLAG; + s->type = objix_hdr.type; + s->size = objix_hdr.size == SPIFFS_UNDEFINED_LEN ? 0 : objix_hdr.size; + s->pix = pix; + strncpy((char *)s->name, (char *)objix_hdr.name, SPIFFS_OBJ_NAME_LEN); +#if SPIFFS_OBJ_META_LEN + memcpy(s->meta, objix_hdr.meta, SPIFFS_OBJ_META_LEN); +#endif + + return res; +} + +s32_t SPIFFS_stat(spiffs *fs, const char *path, spiffs_stat *s) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + if (strlen(path) > SPIFFS_OBJ_NAME_LEN - 1) { + SPIFFS_API_CHECK_RES(fs, SPIFFS_ERR_NAME_TOO_LONG); + } + SPIFFS_LOCK(fs); + + s32_t res; + spiffs_page_ix pix; + + res = spiffs_object_find_object_index_header_by_name(fs, (const u8_t*)path, &pix); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_stat_pix(fs, pix, 0, s); + + SPIFFS_UNLOCK(fs); + + return res; +} + +s32_t SPIFFS_fstat(spiffs *fs, spiffs_file fh, spiffs_stat *s) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_fd *fd; + s32_t res; + + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + +#if SPIFFS_CACHE_WR + spiffs_fflush_cache(fs, fh); +#endif + + res = spiffs_stat_pix(fs, fd->objix_hdr_pix, fh, s); + + SPIFFS_UNLOCK(fs); + + return res; +} + +// Checks if there are any cached writes for the object id associated with +// given filehandle. If so, these writes are flushed. +#if SPIFFS_CACHE == 1 +static s32_t spiffs_fflush_cache(spiffs *fs, spiffs_file fh) { + (void)fs; + (void)fh; + s32_t res = SPIFFS_OK; +#if !SPIFFS_READ_ONLY && SPIFFS_CACHE_WR + + spiffs_fd *fd; + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES(fs, res); + + if ((fd->flags & SPIFFS_O_DIRECT) == 0) { + if (fd->cache_page == 0) { + // see if object id is associated with cache already + fd->cache_page = spiffs_cache_page_get_by_fd(fs, fd); + } + if (fd->cache_page) { + SPIFFS_CACHE_DBG("CACHE_WR_DUMP: dumping cache page "_SPIPRIpg" for fd "_SPIPRIfd":"_SPIPRIid", flush, offs:"_SPIPRIi" size:"_SPIPRIi"\n", + fd->cache_page->ix, fd->file_nbr, fd->obj_id, fd->cache_page->offset, fd->cache_page->size); + res = spiffs_hydro_write(fs, fd, + spiffs_get_cache_page(fs, spiffs_get_cache(fs), fd->cache_page->ix), + fd->cache_page->offset, fd->cache_page->size); + if (res < SPIFFS_OK) { + fs->err_code = res; + } + spiffs_cache_fd_release(fs, fd->cache_page); + } + } +#endif + + return res; +} +#endif + +s32_t SPIFFS_fflush(spiffs *fs, spiffs_file fh) { + (void)fh; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + s32_t res = SPIFFS_OK; +#if !SPIFFS_READ_ONLY && SPIFFS_CACHE_WR + SPIFFS_LOCK(fs); + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fflush_cache(fs, fh); + SPIFFS_API_CHECK_RES_UNLOCK(fs,res); + SPIFFS_UNLOCK(fs); +#endif + + return res; +} + +s32_t SPIFFS_close(spiffs *fs, spiffs_file fh) { + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + + s32_t res = SPIFFS_OK; + SPIFFS_LOCK(fs); + + fh = SPIFFS_FH_UNOFFS(fs, fh); +#if SPIFFS_CACHE + res = spiffs_fflush_cache(fs, fh); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); +#endif + res = spiffs_fd_return(fs, fh); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + + return res; +} + +s32_t SPIFFS_rename(spiffs *fs, const char *old_path, const char *new_path) { +#if SPIFFS_READ_ONLY + (void)fs; (void)old_path; (void)new_path; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + if (strlen(new_path) > SPIFFS_OBJ_NAME_LEN - 1 || + strlen(old_path) > SPIFFS_OBJ_NAME_LEN - 1) { + SPIFFS_API_CHECK_RES(fs, SPIFFS_ERR_NAME_TOO_LONG); + } + SPIFFS_LOCK(fs); + + spiffs_page_ix pix_old, pix_dummy; + spiffs_fd *fd; + + s32_t res = spiffs_object_find_object_index_header_by_name(fs, (const u8_t*)old_path, &pix_old); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_find_object_index_header_by_name(fs, (const u8_t*)new_path, &pix_dummy); + if (res == SPIFFS_ERR_NOT_FOUND) { + res = SPIFFS_OK; + } else if (res == SPIFFS_OK) { + res = SPIFFS_ERR_CONFLICTING_NAME; + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_fd_find_new(fs, &fd, 0); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_open_by_page(fs, pix_old, fd, 0, 0); + if (res != SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id, fd->objix_hdr_pix, 0, (const u8_t*)new_path, + 0, 0, &pix_dummy); +#if SPIFFS_TEMPORAL_FD_CACHE + if (res == SPIFFS_OK) { + spiffs_fd_temporal_cache_rehash(fs, old_path, new_path); + } +#endif + + spiffs_fd_return(fs, fd->file_nbr); + + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + + return res; +#endif // SPIFFS_READ_ONLY +} + +#if SPIFFS_OBJ_META_LEN +s32_t SPIFFS_update_meta(spiffs *fs, const char *name, const void *meta) { +#if SPIFFS_READ_ONLY + (void)fs; (void)name; (void)meta; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + spiffs_page_ix pix, pix_dummy; + spiffs_fd *fd; + + s32_t res = spiffs_object_find_object_index_header_by_name(fs, (const u8_t*)name, &pix); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_fd_find_new(fs, &fd, 0); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_open_by_page(fs, pix, fd, 0, 0); + if (res != SPIFFS_OK) { + spiffs_fd_return(fs, fd->file_nbr); + } + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id, fd->objix_hdr_pix, 0, 0, meta, + 0, &pix_dummy); + + spiffs_fd_return(fs, fd->file_nbr); + + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + + return res; +#endif // SPIFFS_READ_ONLY +} + +s32_t SPIFFS_fupdate_meta(spiffs *fs, spiffs_file fh, const void *meta) { +#if SPIFFS_READ_ONLY + (void)fs; (void)fh; (void)meta; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + s32_t res; + spiffs_fd *fd; + spiffs_page_ix pix_dummy; + + fh = SPIFFS_FH_UNOFFS(fs, fh); + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if ((fd->flags & SPIFFS_O_WRONLY) == 0) { + res = SPIFFS_ERR_NOT_WRITABLE; + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id, fd->objix_hdr_pix, 0, 0, meta, + 0, &pix_dummy); + + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + + return res; +#endif // SPIFFS_READ_ONLY +} +#endif // SPIFFS_OBJ_META_LEN + +spiffs_DIR *SPIFFS_opendir(spiffs *fs, const char *name, spiffs_DIR *d) { + (void)name; + + if (!SPIFFS_CHECK_CFG((fs))) { + (fs)->err_code = SPIFFS_ERR_NOT_CONFIGURED; + return 0; + } + + if (!SPIFFS_CHECK_MOUNT(fs)) { + fs->err_code = SPIFFS_ERR_NOT_MOUNTED; + return 0; + } + + d->fs = fs; + d->block = 0; + d->entry = 0; + return d; +} + +static s32_t spiffs_read_dir_v( + spiffs *fs, + spiffs_obj_id obj_id, + spiffs_block_ix bix, + int ix_entry, + const void *user_const_p, + void *user_var_p) { + (void)user_const_p; + s32_t res; + spiffs_page_object_ix_header objix_hdr; + if (obj_id == SPIFFS_OBJ_ID_FREE || obj_id == SPIFFS_OBJ_ID_DELETED || + (obj_id & SPIFFS_OBJ_ID_IX_FLAG) == 0) { + return SPIFFS_VIS_COUNTINUE; + } + + spiffs_page_ix pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, ix_entry); + res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU2 | SPIFFS_OP_C_READ, + 0, SPIFFS_PAGE_TO_PADDR(fs, pix), sizeof(spiffs_page_object_ix_header), (u8_t *)&objix_hdr); + if (res != SPIFFS_OK) return res; + if ((obj_id & SPIFFS_OBJ_ID_IX_FLAG) && + objix_hdr.p_hdr.span_ix == 0 && + (objix_hdr.p_hdr.flags & (SPIFFS_PH_FLAG_DELET | SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_IXDELE)) == + (SPIFFS_PH_FLAG_DELET | SPIFFS_PH_FLAG_IXDELE)) { + struct spiffs_dirent *e = (struct spiffs_dirent*)user_var_p; + e->obj_id = obj_id; + strcpy((char *)e->name, (char *)objix_hdr.name); + e->type = objix_hdr.type; + e->size = objix_hdr.size == SPIFFS_UNDEFINED_LEN ? 0 : objix_hdr.size; + e->pix = pix; +#if SPIFFS_OBJ_META_LEN + memcpy(e->meta, objix_hdr.meta, SPIFFS_OBJ_META_LEN); +#endif + return SPIFFS_OK; + } + return SPIFFS_VIS_COUNTINUE; +} + +struct spiffs_dirent *SPIFFS_readdir(spiffs_DIR *d, struct spiffs_dirent *e) { + if (!SPIFFS_CHECK_MOUNT(d->fs)) { + d->fs->err_code = SPIFFS_ERR_NOT_MOUNTED; + return 0; + } + SPIFFS_LOCK(d->fs); + + spiffs_block_ix bix; + int entry; + s32_t res; + struct spiffs_dirent *ret = 0; + + res = spiffs_obj_lu_find_entry_visitor(d->fs, + d->block, + d->entry, + SPIFFS_VIS_NO_WRAP, + 0, + spiffs_read_dir_v, + 0, + e, + &bix, + &entry); + if (res == SPIFFS_OK) { + d->block = bix; + d->entry = entry + 1; + e->obj_id &= ~SPIFFS_OBJ_ID_IX_FLAG; + ret = e; + } else { + d->fs->err_code = res; + } + SPIFFS_UNLOCK(d->fs); + return ret; +} + +s32_t SPIFFS_closedir(spiffs_DIR *d) { + SPIFFS_API_CHECK_CFG(d->fs); + SPIFFS_API_CHECK_MOUNT(d->fs); + return 0; +} + +s32_t SPIFFS_check(spiffs *fs) { +#if SPIFFS_READ_ONLY + (void)fs; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + res = spiffs_lookup_consistency_check(fs, 0); + + res = spiffs_object_index_consistency_check(fs); + + res = spiffs_page_consistency_check(fs); + + res = spiffs_obj_lu_scan(fs); + + SPIFFS_UNLOCK(fs); + return res; +#endif // SPIFFS_READ_ONLY +} + +s32_t SPIFFS_info(spiffs *fs, u32_t *total, u32_t *used) { + s32_t res = SPIFFS_OK; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + u32_t pages_per_block = SPIFFS_PAGES_PER_BLOCK(fs); + u32_t blocks = fs->block_count; + u32_t obj_lu_pages = SPIFFS_OBJ_LOOKUP_PAGES(fs); + u32_t data_page_size = SPIFFS_DATA_PAGE_SIZE(fs); + u32_t total_data_pages = (blocks - 2) * (pages_per_block - obj_lu_pages) + 1; // -2 for spare blocks, +1 for emergency page + + if (total) { + *total = total_data_pages * data_page_size; + } + + if (used) { + *used = fs->stats_p_allocated * data_page_size; + } + + SPIFFS_UNLOCK(fs); + return res; +} + +s32_t SPIFFS_gc_quick(spiffs *fs, u16_t max_free_pages) { +#if SPIFFS_READ_ONLY + (void)fs; (void)max_free_pages; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + res = spiffs_gc_quick(fs, max_free_pages); + + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + SPIFFS_UNLOCK(fs); + return 0; +#endif // SPIFFS_READ_ONLY +} + + +s32_t SPIFFS_gc(spiffs *fs, u32_t size) { +#if SPIFFS_READ_ONLY + (void)fs; (void)size; + return SPIFFS_ERR_RO_NOT_IMPL; +#else + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + res = spiffs_gc_check(fs, size); + + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + SPIFFS_UNLOCK(fs); + return 0; +#endif // SPIFFS_READ_ONLY +} + +s32_t SPIFFS_eof(spiffs *fs, spiffs_file fh) { + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + fh = SPIFFS_FH_UNOFFS(fs, fh); + + spiffs_fd *fd; + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + +#if SPIFFS_CACHE_WR + res = spiffs_fflush_cache(fs, fh); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); +#endif + + res = (fd->fdoffset >= (fd->size == SPIFFS_UNDEFINED_LEN ? 0 : fd->size)); + + SPIFFS_UNLOCK(fs); + return res; +} + +s32_t SPIFFS_tell(spiffs *fs, spiffs_file fh) { + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + fh = SPIFFS_FH_UNOFFS(fs, fh); + + spiffs_fd *fd; + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + +#if SPIFFS_CACHE_WR + res = spiffs_fflush_cache(fs, fh); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); +#endif + + res = fd->fdoffset; + + SPIFFS_UNLOCK(fs); + return res; +} + +s32_t SPIFFS_set_file_callback_func(spiffs *fs, spiffs_file_callback cb_func) { + SPIFFS_LOCK(fs); + fs->file_cb_f = cb_func; + SPIFFS_UNLOCK(fs); + return 0; +} + +#if SPIFFS_IX_MAP + +s32_t SPIFFS_ix_map(spiffs *fs, spiffs_file fh, spiffs_ix_map *map, + u32_t offset, u32_t len, spiffs_page_ix *map_buf) { + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + fh = SPIFFS_FH_UNOFFS(fs, fh); + + spiffs_fd *fd; + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if (fd->ix_map) { + SPIFFS_API_CHECK_RES_UNLOCK(fs, SPIFFS_ERR_IX_MAP_MAPPED); + } + + map->map_buf = map_buf; + map->offset = offset; + // nb: spix range includes last + map->start_spix = offset / SPIFFS_DATA_PAGE_SIZE(fs); + map->end_spix = (offset + len) / SPIFFS_DATA_PAGE_SIZE(fs); + memset(map_buf, 0, sizeof(spiffs_page_ix) * (map->end_spix - map->start_spix + 1)); + fd->ix_map = map; + + // scan for pixes + res = spiffs_populate_ix_map(fs, fd, 0, map->end_spix - map->start_spix + 1); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + SPIFFS_UNLOCK(fs); + return res; +} + +s32_t SPIFFS_ix_unmap(spiffs *fs, spiffs_file fh) { + s32_t res; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + fh = SPIFFS_FH_UNOFFS(fs, fh); + + spiffs_fd *fd; + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if (fd->ix_map == 0) { + SPIFFS_API_CHECK_RES_UNLOCK(fs, SPIFFS_ERR_IX_MAP_UNMAPPED); + } + + fd->ix_map = 0; + + SPIFFS_UNLOCK(fs); + return res; +} + +s32_t SPIFFS_ix_remap(spiffs *fs, spiffs_file fh, u32_t offset) { + s32_t res = SPIFFS_OK; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + fh = SPIFFS_FH_UNOFFS(fs, fh); + + spiffs_fd *fd; + res = spiffs_fd_get(fs, fh, &fd); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + + if (fd->ix_map == 0) { + SPIFFS_API_CHECK_RES_UNLOCK(fs, SPIFFS_ERR_IX_MAP_UNMAPPED); + } + + spiffs_ix_map *map = fd->ix_map; + + s32_t spix_diff = offset / SPIFFS_DATA_PAGE_SIZE(fs) - map->start_spix; + map->offset = offset; + + // move existing pixes if within map offs + if (spix_diff != 0) { + // move vector + int i; + const s32_t vec_len = map->end_spix - map->start_spix + 1; // spix range includes last + map->start_spix += spix_diff; + map->end_spix += spix_diff; + if (spix_diff >= vec_len) { + // moving beyond range + memset(&map->map_buf, 0, vec_len * sizeof(spiffs_page_ix)); + // populate_ix_map is inclusive + res = spiffs_populate_ix_map(fs, fd, 0, vec_len-1); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } else if (spix_diff > 0) { + // diff positive + for (i = 0; i < vec_len - spix_diff; i++) { + map->map_buf[i] = map->map_buf[i + spix_diff]; + } + // memset is non-inclusive + memset(&map->map_buf[vec_len - spix_diff], 0, spix_diff * sizeof(spiffs_page_ix)); + // populate_ix_map is inclusive + res = spiffs_populate_ix_map(fs, fd, vec_len - spix_diff, vec_len-1); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } else { + // diff negative + for (i = vec_len - 1; i >= -spix_diff; i--) { + map->map_buf[i] = map->map_buf[i + spix_diff]; + } + // memset is non-inclusive + memset(&map->map_buf[0], 0, -spix_diff * sizeof(spiffs_page_ix)); + // populate_ix_map is inclusive + res = spiffs_populate_ix_map(fs, fd, 0, -spix_diff - 1); + SPIFFS_API_CHECK_RES_UNLOCK(fs, res); + } + + } + + SPIFFS_UNLOCK(fs); + return res; +} + +s32_t SPIFFS_bytes_to_ix_map_entries(spiffs *fs, u32_t bytes) { + SPIFFS_API_CHECK_CFG(fs); + // always add one extra page, the offset might change to the middle of a page + return (bytes + SPIFFS_DATA_PAGE_SIZE(fs) ) / SPIFFS_DATA_PAGE_SIZE(fs); +} + +s32_t SPIFFS_ix_map_entries_to_bytes(spiffs *fs, u32_t map_page_ix_entries) { + SPIFFS_API_CHECK_CFG(fs); + return map_page_ix_entries * SPIFFS_DATA_PAGE_SIZE(fs); +} + +#endif // SPIFFS_IX_MAP + +#if SPIFFS_TEST_VISUALISATION +s32_t SPIFFS_vis(spiffs *fs) { + s32_t res = SPIFFS_OK; + SPIFFS_API_CHECK_CFG(fs); + SPIFFS_API_CHECK_MOUNT(fs); + SPIFFS_LOCK(fs); + + int entries_per_page = (SPIFFS_CFG_LOG_PAGE_SZ(fs) / sizeof(spiffs_obj_id)); + spiffs_obj_id *obj_lu_buf = (spiffs_obj_id *)fs->lu_work; + spiffs_block_ix bix = 0; + + while (bix < fs->block_count) { + // check each object lookup page + int obj_lookup_page = 0; + int cur_entry = 0; + + while (res == SPIFFS_OK && obj_lookup_page < (int)SPIFFS_OBJ_LOOKUP_PAGES(fs)) { + int entry_offset = obj_lookup_page * entries_per_page; + res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_READ, + 0, bix * SPIFFS_CFG_LOG_BLOCK_SZ(fs) + SPIFFS_PAGE_TO_PADDR(fs, obj_lookup_page), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->lu_work); + // check each entry + while (res == SPIFFS_OK && + cur_entry - entry_offset < entries_per_page && cur_entry < (int)(SPIFFS_PAGES_PER_BLOCK(fs)-SPIFFS_OBJ_LOOKUP_PAGES(fs))) { + spiffs_obj_id obj_id = obj_lu_buf[cur_entry-entry_offset]; + if (cur_entry == 0) { + spiffs_printf(_SPIPRIbl" ", bix); + } else if ((cur_entry & 0x3f) == 0) { + spiffs_printf(" "); + } + if (obj_id == SPIFFS_OBJ_ID_FREE) { + spiffs_printf(SPIFFS_TEST_VIS_FREE_STR); + } else if (obj_id == SPIFFS_OBJ_ID_DELETED) { + spiffs_printf(SPIFFS_TEST_VIS_DELE_STR); + } else if (obj_id & SPIFFS_OBJ_ID_IX_FLAG){ + spiffs_printf(SPIFFS_TEST_VIS_INDX_STR(obj_id)); + } else { + spiffs_printf(SPIFFS_TEST_VIS_DATA_STR(obj_id)); + } + cur_entry++; + if ((cur_entry & 0x3f) == 0) { + spiffs_printf("\n"); + } + } // per entry + obj_lookup_page++; + } // per object lookup page + + spiffs_obj_id erase_count; + res = _spiffs_rd(fs, SPIFFS_OP_C_READ | SPIFFS_OP_T_OBJ_LU2, 0, + SPIFFS_ERASE_COUNT_PADDR(fs, bix), + sizeof(spiffs_obj_id), (u8_t *)&erase_count); + SPIFFS_CHECK_RES(res); + + if (erase_count != (spiffs_obj_id)-1) { + spiffs_printf("\tera_cnt: "_SPIPRIi"\n", erase_count); + } else { + spiffs_printf("\tera_cnt: N/A\n"); + } + + bix++; + } // per block + + spiffs_printf("era_cnt_max: "_SPIPRIi"\n", fs->max_erase_count); + spiffs_printf("last_errno: "_SPIPRIi"\n", fs->err_code); + spiffs_printf("blocks: "_SPIPRIi"\n", fs->block_count); + spiffs_printf("free_blocks: "_SPIPRIi"\n", fs->free_blocks); + spiffs_printf("page_alloc: "_SPIPRIi"\n", fs->stats_p_allocated); + spiffs_printf("page_delet: "_SPIPRIi"\n", fs->stats_p_deleted); + SPIFFS_UNLOCK(fs); + u32_t total, used; + SPIFFS_info(fs, &total, &used); + spiffs_printf("used: "_SPIPRIi" of "_SPIPRIi"\n", used, total); + return res; +} +#endif |