1802 lines
66 KiB
C
1802 lines
66 KiB
C
#include "spiffs.h"
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#include "spiffs_nucleus.h"
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static s32_t spiffs_page_data_check(spiffs *fs, spiffs_fd *fd, spiffs_page_ix pix, spiffs_span_ix spix) {
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s32_t res = SPIFFS_OK;
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if (pix == (spiffs_page_ix)-1) {
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// referring to page 0xffff...., bad object index
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return SPIFFS_ERR_INDEX_REF_FREE;
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}
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if (pix % SPIFFS_PAGES_PER_BLOCK(fs) < SPIFFS_OBJ_LOOKUP_PAGES(fs)) {
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// referring to an object lookup page, bad object index
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return SPIFFS_ERR_INDEX_REF_LU;
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}
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if (pix > SPIFFS_MAX_PAGES(fs)) {
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// referring to a bad page
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return SPIFFS_ERR_INDEX_REF_INVALID;
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}
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#if SPIFFS_PAGE_CHECK
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spiffs_page_header ph;
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res = _spiffs_rd(
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fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_READ,
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fd->file_nbr,
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SPIFFS_PAGE_TO_PADDR(fs, pix),
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sizeof(spiffs_page_header),
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(u8_t *)&ph);
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SPIFFS_CHECK_RES(res);
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SPIFFS_VALIDATE_DATA(ph, fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG, spix);
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#endif
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return res;
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}
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static s32_t spiffs_page_index_check(spiffs *fs, spiffs_fd *fd, spiffs_page_ix pix, spiffs_span_ix spix) {
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s32_t res = SPIFFS_OK;
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if (pix == (spiffs_page_ix)-1) {
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// referring to page 0xffff...., bad object index
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return SPIFFS_ERR_INDEX_FREE;
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}
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if (pix % SPIFFS_PAGES_PER_BLOCK(fs) < SPIFFS_OBJ_LOOKUP_PAGES(fs)) {
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// referring to an object lookup page, bad object index
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return SPIFFS_ERR_INDEX_LU;
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}
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if (pix > SPIFFS_MAX_PAGES(fs)) {
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// referring to a bad page
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return SPIFFS_ERR_INDEX_INVALID;
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}
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#if SPIFFS_PAGE_CHECK
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spiffs_page_header ph;
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res = _spiffs_rd(
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fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
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fd->file_nbr,
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SPIFFS_PAGE_TO_PADDR(fs, pix),
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sizeof(spiffs_page_header),
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(u8_t *)&ph);
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SPIFFS_CHECK_RES(res);
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SPIFFS_VALIDATE_OBJIX(ph, fd->obj_id, spix);
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#endif
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return res;
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}
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#if !SPIFFS_CACHE
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s32_t spiffs_phys_rd(
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spiffs *fs,
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u32_t addr,
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u32_t len,
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u8_t *dst) {
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return fs->cfg.hal_read_f(addr, len, dst);
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}
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s32_t spiffs_phys_wr(
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spiffs *fs,
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u32_t addr,
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u32_t len,
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u8_t *src) {
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return fs->cfg.hal_write_f(addr, len, src);
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}
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#endif
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s32_t spiffs_phys_cpy(
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spiffs *fs,
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spiffs_file fh,
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u32_t dst,
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u32_t src,
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u32_t len) {
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s32_t res;
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u8_t b[SPIFFS_COPY_BUFFER_STACK];
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while (len > 0) {
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u32_t chunk_size = MIN(SPIFFS_COPY_BUFFER_STACK, len);
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res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_MOVS, fh, src, chunk_size, b);
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SPIFFS_CHECK_RES(res);
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res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_MOVD, fh, dst, chunk_size, b);
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SPIFFS_CHECK_RES(res);
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len -= chunk_size;
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src += chunk_size;
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dst += chunk_size;
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}
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return SPIFFS_OK;
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}
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// Find object lookup entry containing given id with visitor.
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// Iterate over object lookup pages in each block until a given object id entry is found.
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// When found, the visitor function is called with block index, entry index and user_data.
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// If visitor returns SPIFFS_VIS_CONTINUE, the search goes on. Otherwise, the search will be
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// ended and visitor's return code is returned to caller.
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// If no visitor is given (0) the search returns on first entry with matching object id.
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// If no match is found in all look up, SPIFFS_VIS_END is returned.
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// @param fs the file system
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// @param starting_block the starting block to start search in
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// @param starting_lu_entry the look up index entry to start search in
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// @param flags ored combination of SPIFFS_VIS_CHECK_ID, SPIFFS_VIS_CHECK_PH,
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// SPIFFS_VIS_NO_WRAP
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// @param obj_id argument object id
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// @param v visitor callback function
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// @param user_data any data, passed to the callback visitor function
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// @param user_p any pointer, passed to the callback visitor function
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// @param block_ix reported block index where match was found
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// @param lu_entry reported look up index where match was found
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s32_t spiffs_obj_lu_find_entry_visitor(
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spiffs *fs,
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spiffs_block_ix starting_block,
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int starting_lu_entry,
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u8_t flags,
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spiffs_obj_id obj_id,
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spiffs_visitor_f v,
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u32_t user_data,
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void *user_p,
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spiffs_block_ix *block_ix,
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int *lu_entry) {
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s32_t res = SPIFFS_OK;
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s32_t entry_count = fs->block_count * SPIFFS_OBJ_LOOKUP_MAX_ENTRIES(fs);
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spiffs_block_ix cur_block = starting_block;
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u32_t cur_block_addr = starting_block * SPIFFS_CFG_LOG_BLOCK_SZ(fs);
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spiffs_obj_id *obj_lu_buf = (spiffs_obj_id *)fs->lu_work;
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int cur_entry = starting_lu_entry;
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int entries_per_page = (SPIFFS_CFG_LOG_PAGE_SZ(fs) / sizeof(spiffs_obj_id));
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// wrap initial
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if (cur_entry >= (int)SPIFFS_OBJ_LOOKUP_MAX_ENTRIES(fs) - 1) {
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cur_entry = 0;
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cur_block++;
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cur_block_addr = cur_block * SPIFFS_CFG_LOG_BLOCK_SZ(fs);
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if (cur_block >= fs->block_count) {
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// block wrap
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cur_block = 0;
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cur_block_addr = 0;
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}
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}
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// check each block
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while (res == SPIFFS_OK && entry_count > 0) {
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int obj_lookup_page = cur_entry / entries_per_page;
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// check each object lookup page
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while (res == SPIFFS_OK && obj_lookup_page < (int)SPIFFS_OBJ_LOOKUP_PAGES(fs)) {
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int entry_offset = obj_lookup_page * entries_per_page;
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res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_READ,
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0, cur_block_addr + SPIFFS_PAGE_TO_PADDR(fs, obj_lookup_page), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->lu_work);
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// check each entry
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while (res == SPIFFS_OK &&
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cur_entry - entry_offset < entries_per_page && // for non-last obj lookup pages
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cur_entry < (int)SPIFFS_OBJ_LOOKUP_MAX_ENTRIES(fs)) // for last obj lookup page
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{
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if ((flags & SPIFFS_VIS_CHECK_ID) == 0 || obj_lu_buf[cur_entry-entry_offset] == obj_id) {
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if (block_ix) *block_ix = cur_block;
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if (lu_entry) *lu_entry = cur_entry;
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if (v) {
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res = v(
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fs,
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(flags & SPIFFS_VIS_CHECK_PH) ? obj_id : obj_lu_buf[cur_entry-entry_offset],
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cur_block,
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cur_entry,
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user_data,
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user_p);
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if (res == SPIFFS_VIS_COUNTINUE || res == SPIFFS_VIS_COUNTINUE_RELOAD) {
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if (res == SPIFFS_VIS_COUNTINUE_RELOAD) {
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res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_READ,
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0, cur_block_addr + SPIFFS_PAGE_TO_PADDR(fs, obj_lookup_page), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->lu_work);
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SPIFFS_CHECK_RES(res);
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}
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res = SPIFFS_OK;
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cur_entry++;
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entry_count--;
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continue;
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} else {
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return res;
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}
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} else {
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return SPIFFS_OK;
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}
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}
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entry_count--;
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cur_entry++;
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} // per entry
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obj_lookup_page++;
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} // per object lookup page
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cur_entry = 0;
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cur_block++;
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cur_block_addr += SPIFFS_CFG_LOG_BLOCK_SZ(fs);
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if (cur_block >= fs->block_count) {
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if (flags & SPIFFS_VIS_NO_WRAP) {
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return SPIFFS_VIS_END;
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} else {
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// block wrap
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cur_block = 0;
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cur_block_addr = 0;
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}
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}
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} // per block
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SPIFFS_CHECK_RES(res);
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return SPIFFS_VIS_END;
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}
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static s32_t spiffs_obj_lu_scan_v(
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spiffs *fs,
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spiffs_obj_id obj_id,
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spiffs_block_ix bix,
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int ix_entry,
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u32_t user_data,
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void *user_p) {
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(void)bix;
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(void)user_data;
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(void)user_p;
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if (obj_id == SPIFFS_OBJ_ID_FREE) {
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if (ix_entry == 0) {
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fs->free_blocks++;
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// todo optimize further, return SPIFFS_NEXT_BLOCK
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}
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} else if (obj_id == SPIFFS_OBJ_ID_DELETED) {
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fs->stats_p_deleted++;
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} else {
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fs->stats_p_allocated++;
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}
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return SPIFFS_VIS_COUNTINUE;
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}
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// Scans thru all obj lu and counts free, deleted and used pages
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// Find the maximum block erase count
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s32_t spiffs_obj_lu_scan(
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spiffs *fs) {
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s32_t res;
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spiffs_block_ix bix;
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int entry;
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fs->free_blocks = 0;
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fs->stats_p_allocated = 0;
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fs->stats_p_deleted = 0;
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res = spiffs_obj_lu_find_entry_visitor(fs,
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0,
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0,
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0,
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0,
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spiffs_obj_lu_scan_v,
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0,
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0,
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&bix,
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&entry);
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if (res == SPIFFS_VIS_END) {
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res = SPIFFS_OK;
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}
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SPIFFS_CHECK_RES(res);
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bix = 0;
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spiffs_obj_id erase_count_final;
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spiffs_obj_id erase_count_min = SPIFFS_OBJ_ID_FREE;
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spiffs_obj_id erase_count_max = 0;
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while (bix < fs->block_count) {
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spiffs_obj_id erase_count;
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res = _spiffs_rd(fs,
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SPIFFS_OP_T_OBJ_LU2 | SPIFFS_OP_C_READ,
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0, SPIFFS_ERASE_COUNT_PADDR(fs, bix) ,
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sizeof(spiffs_obj_id), (u8_t *)&erase_count);
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SPIFFS_CHECK_RES(res);
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if (erase_count != SPIFFS_OBJ_ID_FREE) {
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erase_count_min = MIN(erase_count_min, erase_count);
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erase_count_max = MAX(erase_count_max, erase_count);
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}
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bix++;
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}
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if (erase_count_min == 0 && erase_count_max == SPIFFS_OBJ_ID_FREE) {
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// clean system, set counter to zero
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erase_count_final = 0;
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} else if (erase_count_max - erase_count_min > (SPIFFS_OBJ_ID_FREE)/2) {
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// wrap, take min
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erase_count_final = erase_count_min+1;
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} else {
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erase_count_final = erase_count_max+1;
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}
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fs->max_erase_count = erase_count_final;
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return res;
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}
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// Find free object lookup entry
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// Iterate over object lookup pages in each block until a free object id entry is found
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s32_t spiffs_obj_lu_find_free(
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spiffs *fs,
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spiffs_block_ix starting_block,
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int starting_lu_entry,
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spiffs_block_ix *block_ix,
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int *lu_entry) {
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s32_t res;
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if (!fs->cleaning && fs->free_blocks < 2) {
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res = spiffs_gc_quick(fs);
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SPIFFS_CHECK_RES(res);
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if (fs->free_blocks < 2) {
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return SPIFFS_ERR_FULL;
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}
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}
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res = spiffs_obj_lu_find_id(fs, starting_block, starting_lu_entry,
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SPIFFS_OBJ_ID_FREE, block_ix, lu_entry);
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if (res == SPIFFS_OK) {
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fs->free_cursor_block_ix = *block_ix;
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fs->free_cursor_obj_lu_entry = *lu_entry;
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if (*lu_entry == 0) {
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fs->free_blocks--;
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}
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}
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if (res == SPIFFS_VIS_END) {
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SPIFFS_DBG("fs full\n");
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}
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return res == SPIFFS_VIS_END ? SPIFFS_ERR_FULL : res;
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}
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// Find object lookup entry containing given id
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// Iterate over object lookup pages in each block until a given object id entry is found
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s32_t spiffs_obj_lu_find_id(
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spiffs *fs,
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spiffs_block_ix starting_block,
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int starting_lu_entry,
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spiffs_obj_id obj_id,
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spiffs_block_ix *block_ix,
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int *lu_entry) {
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s32_t res = spiffs_obj_lu_find_entry_visitor(
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fs, starting_block, starting_lu_entry, SPIFFS_VIS_CHECK_ID, obj_id, 0, 0, 0, block_ix, lu_entry);
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if (res == SPIFFS_VIS_END) {
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res = SPIFFS_ERR_NOT_FOUND;
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}
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return res;
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}
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static s32_t spiffs_obj_lu_find_id_and_span_v(
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spiffs *fs,
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spiffs_obj_id obj_id,
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spiffs_block_ix bix,
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int ix_entry,
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u32_t user_data,
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void *user_p) {
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s32_t res;
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spiffs_page_header ph;
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spiffs_page_ix pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, ix_entry);
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res = _spiffs_rd(fs, 0, SPIFFS_OP_T_OBJ_LU2 | SPIFFS_OP_C_READ,
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SPIFFS_PAGE_TO_PADDR(fs, pix), sizeof(spiffs_page_header), (u8_t *)&ph);
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SPIFFS_CHECK_RES(res);
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if (ph.obj_id == obj_id &&
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ph.span_ix == (spiffs_span_ix)user_data &&
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(ph.flags & (SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_DELET | SPIFFS_PH_FLAG_USED)) == SPIFFS_PH_FLAG_DELET &&
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!((obj_id & SPIFFS_OBJ_ID_IX_FLAG) && (ph.flags & SPIFFS_PH_FLAG_IXDELE) == 0 && ph.span_ix == 0) &&
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(user_p == 0 || *((spiffs_page_ix *)user_p) != pix)) {
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return SPIFFS_OK;
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} else {
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return SPIFFS_VIS_COUNTINUE;
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}
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}
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// Find object lookup entry containing given id and span index
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// Iterate over object lookup pages in each block until a given object id entry is found
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s32_t spiffs_obj_lu_find_id_and_span(
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spiffs *fs,
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spiffs_obj_id obj_id,
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spiffs_span_ix spix,
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spiffs_page_ix exclusion_pix,
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spiffs_page_ix *pix) {
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s32_t res;
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spiffs_block_ix bix;
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int entry;
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res = spiffs_obj_lu_find_entry_visitor(fs,
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fs->cursor_block_ix,
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fs->cursor_obj_lu_entry,
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SPIFFS_VIS_CHECK_ID,
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obj_id,
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spiffs_obj_lu_find_id_and_span_v,
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(u32_t)spix,
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exclusion_pix ? &exclusion_pix : 0,
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&bix,
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&entry);
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if (res == SPIFFS_VIS_END) {
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res = SPIFFS_ERR_NOT_FOUND;
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}
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SPIFFS_CHECK_RES(res);
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if (pix) {
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*pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry);
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}
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fs->cursor_block_ix = bix;
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fs->cursor_obj_lu_entry = entry;
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return res;
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}
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// Find object lookup entry containing given id and span index in page headers only
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// Iterate over object lookup pages in each block until a given object id entry is found
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s32_t spiffs_obj_lu_find_id_and_span_by_phdr(
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spiffs *fs,
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spiffs_obj_id obj_id,
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spiffs_span_ix spix,
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spiffs_page_ix exclusion_pix,
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spiffs_page_ix *pix) {
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s32_t res;
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spiffs_block_ix bix;
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int entry;
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res = spiffs_obj_lu_find_entry_visitor(fs,
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fs->cursor_block_ix,
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fs->cursor_obj_lu_entry,
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SPIFFS_VIS_CHECK_PH,
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obj_id,
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spiffs_obj_lu_find_id_and_span_v,
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(u32_t)spix,
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exclusion_pix ? &exclusion_pix : 0,
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&bix,
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&entry);
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if (res == SPIFFS_VIS_END) {
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res = SPIFFS_ERR_NOT_FOUND;
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}
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SPIFFS_CHECK_RES(res);
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if (pix) {
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*pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry);
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}
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fs->cursor_block_ix = bix;
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fs->cursor_obj_lu_entry = entry;
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return res;
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}
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// Allocates a free defined page with given obj_id
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// Occupies object lookup entry and page
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// data may be NULL; where only page header is stored, len and page_offs is ignored
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s32_t spiffs_page_allocate_data(
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spiffs *fs,
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spiffs_obj_id obj_id,
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spiffs_page_header *ph,
|
|
u8_t *data,
|
|
u32_t len,
|
|
u32_t page_offs,
|
|
u8_t finalize,
|
|
spiffs_page_ix *pix) {
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs_block_ix bix;
|
|
int entry;
|
|
|
|
// find free entry
|
|
res = spiffs_obj_lu_find_free(fs, fs->free_cursor_block_ix, fs->free_cursor_obj_lu_entry, &bix, &entry);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
// occupy page in object lookup
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_BLOCK_TO_PADDR(fs, bix) + entry * sizeof(spiffs_obj_id), sizeof(spiffs_obj_id), (u8_t*)&obj_id);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
fs->stats_p_allocated++;
|
|
|
|
// write page header
|
|
ph->flags &= ~SPIFFS_PH_FLAG_USED;
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_OBJ_LOOKUP_ENTRY_TO_PADDR(fs, bix, entry), sizeof(spiffs_page_header), (u8_t*)ph);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
// write page data
|
|
if (data) {
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
0,SPIFFS_OBJ_LOOKUP_ENTRY_TO_PADDR(fs, bix, entry) + sizeof(spiffs_page_header) + page_offs, len, data);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
|
|
// finalize header if necessary
|
|
if (finalize && (ph->flags & SPIFFS_PH_FLAG_FINAL)) {
|
|
ph->flags &= ~SPIFFS_PH_FLAG_FINAL;
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_OBJ_LOOKUP_ENTRY_TO_PADDR(fs, bix, entry) + offsetof(spiffs_page_header, flags),
|
|
sizeof(u8_t),
|
|
(u8_t *)&ph->flags);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
|
|
// return written page
|
|
if (pix) {
|
|
*pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
// Moves a page from src to a free page and finalizes it. Updates page index. Page data is given in param page.
|
|
// If page data is null, provided header is used for metainfo and page data is physically copied.
|
|
s32_t spiffs_page_move(
|
|
spiffs *fs,
|
|
spiffs_file fh,
|
|
u8_t *page_data,
|
|
spiffs_obj_id obj_id,
|
|
spiffs_page_header *page_hdr,
|
|
spiffs_page_ix src_pix,
|
|
spiffs_page_ix *dst_pix) {
|
|
s32_t res;
|
|
u8_t was_final = 0;
|
|
spiffs_page_header *p_hdr;
|
|
spiffs_block_ix bix;
|
|
int entry;
|
|
spiffs_page_ix free_pix;
|
|
|
|
// find free entry
|
|
res = spiffs_obj_lu_find_free(fs, fs->free_cursor_block_ix, fs->free_cursor_obj_lu_entry, &bix, &entry);
|
|
SPIFFS_CHECK_RES(res);
|
|
free_pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry);
|
|
|
|
if (dst_pix) *dst_pix = free_pix;
|
|
|
|
p_hdr = page_data ? (spiffs_page_header *)page_data : page_hdr;
|
|
if (page_data) {
|
|
// got page data
|
|
was_final = (p_hdr->flags & SPIFFS_PH_FLAG_FINAL) == 0;
|
|
// write unfinalized page
|
|
p_hdr->flags |= SPIFFS_PH_FLAG_FINAL;
|
|
p_hdr->flags &= ~SPIFFS_PH_FLAG_USED;
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_PAGE_TO_PADDR(fs, free_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), page_data);
|
|
} else {
|
|
// copy page data
|
|
res = spiffs_phys_cpy(fs, fh, SPIFFS_PAGE_TO_PADDR(fs, free_pix), SPIFFS_PAGE_TO_PADDR(fs, src_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs));
|
|
}
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
// mark entry in destination object lookup
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_BLOCK_TO_PADDR(fs, SPIFFS_BLOCK_FOR_PAGE(fs, free_pix)) + SPIFFS_OBJ_LOOKUP_ENTRY_FOR_PAGE(fs, free_pix) * sizeof(spiffs_page_ix),
|
|
sizeof(spiffs_obj_id),
|
|
(u8_t *)&obj_id);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
fs->stats_p_allocated++;
|
|
|
|
if (was_final) {
|
|
// mark finalized in destination page
|
|
p_hdr->flags &= ~(SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_USED);
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
fh,
|
|
SPIFFS_PAGE_TO_PADDR(fs, free_pix) + offsetof(spiffs_page_header, flags),
|
|
sizeof(u8_t),
|
|
(u8_t *)&p_hdr->flags);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
// mark source deleted
|
|
res = spiffs_page_delete(fs, src_pix);
|
|
return res;
|
|
}
|
|
|
|
// Deletes a page and removes it from object lookup.
|
|
s32_t spiffs_page_delete(
|
|
spiffs *fs,
|
|
spiffs_page_ix pix) {
|
|
s32_t res;
|
|
spiffs_page_header hdr;
|
|
hdr.flags = 0xff & ~(SPIFFS_PH_FLAG_DELET | SPIFFS_PH_FLAG_USED);
|
|
// mark deleted entry in source object lookup
|
|
spiffs_obj_id d_obj_id = SPIFFS_OBJ_ID_DELETED;
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_DELE,
|
|
0,
|
|
SPIFFS_BLOCK_TO_PADDR(fs, SPIFFS_BLOCK_FOR_PAGE(fs, pix)) + SPIFFS_OBJ_LOOKUP_ENTRY_FOR_PAGE(fs, pix) * sizeof(spiffs_page_ix),
|
|
sizeof(spiffs_obj_id),
|
|
(u8_t *)&d_obj_id);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
fs->stats_p_deleted++;
|
|
fs->stats_p_allocated--;
|
|
|
|
// mark deleted in source page
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_DELE,
|
|
0,
|
|
SPIFFS_PAGE_TO_PADDR(fs, pix) + offsetof(spiffs_page_header, flags),
|
|
sizeof(u8_t),
|
|
(u8_t *)&hdr.flags);
|
|
|
|
return res;
|
|
}
|
|
|
|
// Create an object index header page with empty index and undefined length
|
|
s32_t spiffs_object_create(
|
|
spiffs *fs,
|
|
spiffs_obj_id obj_id,
|
|
u8_t name[SPIFFS_OBJ_NAME_LEN],
|
|
spiffs_obj_type type,
|
|
spiffs_page_ix *objix_hdr_pix) {
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs_block_ix bix;
|
|
spiffs_page_object_ix_header oix_hdr;
|
|
int entry;
|
|
|
|
res = spiffs_gc_check(fs, 0);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
obj_id |= SPIFFS_OBJ_ID_IX_FLAG;
|
|
|
|
// find free entry
|
|
res = spiffs_obj_lu_find_free(fs, fs->free_cursor_block_ix, fs->free_cursor_obj_lu_entry, &bix, &entry);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_DBG("create: found free page @ %04x bix:%i entry:%i\n", SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry), bix, entry);
|
|
|
|
// occupy page in object lookup
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_BLOCK_TO_PADDR(fs, bix) + entry * sizeof(spiffs_obj_id), sizeof(spiffs_obj_id), (u8_t*)&obj_id);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
fs->stats_p_allocated++;
|
|
|
|
// write empty object index page
|
|
oix_hdr.p_hdr.obj_id = obj_id;
|
|
oix_hdr.p_hdr.span_ix = 0;
|
|
oix_hdr.p_hdr.flags = 0xff & ~(SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_INDEX | SPIFFS_PH_FLAG_USED);
|
|
oix_hdr.type = type;
|
|
oix_hdr.size = SPIFFS_UNDEFINED_LEN; // keep ones so we can update later without wasting this page
|
|
strncpy((char *)&oix_hdr.name, (char *)name, SPIFFS_OBJ_NAME_LEN);
|
|
|
|
|
|
// update page
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
0, SPIFFS_OBJ_LOOKUP_ENTRY_TO_PADDR(fs, bix, entry), sizeof(spiffs_page_object_ix_header), (u8_t*)&oix_hdr);
|
|
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, 0, SPIFFS_EV_IX_NEW, obj_id, 0, SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry), SPIFFS_UNDEFINED_LEN);
|
|
|
|
if (objix_hdr_pix) {
|
|
*objix_hdr_pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
// update object index header with any combination of name/size/index
|
|
// new_objix_hdr_data may be null, if so the object index header page is loaded
|
|
// name may be null, if so name is not changed
|
|
// size may be null, if so size is not changed
|
|
s32_t spiffs_object_update_index_hdr(
|
|
spiffs *fs,
|
|
spiffs_fd *fd,
|
|
spiffs_obj_id obj_id,
|
|
spiffs_page_ix objix_hdr_pix,
|
|
u8_t *new_objix_hdr_data,
|
|
u8_t name[SPIFFS_OBJ_NAME_LEN],
|
|
u32_t size,
|
|
spiffs_page_ix *new_pix) {
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs_page_object_ix_header *objix_hdr;
|
|
spiffs_page_ix new_objix_hdr_pix;
|
|
|
|
obj_id |= SPIFFS_OBJ_ID_IX_FLAG;
|
|
|
|
if (new_objix_hdr_data) {
|
|
// object index header page already given to us, no need to load it
|
|
objix_hdr = (spiffs_page_object_ix_header *)new_objix_hdr_data;
|
|
} else {
|
|
// read object index header page
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, objix_hdr_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
objix_hdr = (spiffs_page_object_ix_header *)fs->work;
|
|
}
|
|
|
|
SPIFFS_VALIDATE_OBJIX(objix_hdr->p_hdr, obj_id, 0);
|
|
|
|
// change name
|
|
if (name) {
|
|
strncpy((char *)objix_hdr->name, (char *)name, SPIFFS_OBJ_NAME_LEN);
|
|
}
|
|
if (size) {
|
|
objix_hdr->size = size;
|
|
}
|
|
|
|
// move and update page
|
|
res = spiffs_page_move(fs, fd == 0 ? 0 : fd->file_nbr, (u8_t*)objix_hdr, obj_id, 0, objix_hdr_pix, &new_objix_hdr_pix);
|
|
|
|
if (res == SPIFFS_OK) {
|
|
if (new_pix) {
|
|
*new_pix = new_objix_hdr_pix;
|
|
}
|
|
// callback on object index update
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD, obj_id, objix_hdr->p_hdr.span_ix, new_objix_hdr_pix, objix_hdr->size);
|
|
if (fd) fd->objix_hdr_pix = new_objix_hdr_pix; // if this is not in the registered cluster
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
void spiffs_cb_object_event(
|
|
spiffs *fs,
|
|
spiffs_fd *fd,
|
|
int ev,
|
|
spiffs_obj_id obj_id,
|
|
spiffs_span_ix spix,
|
|
spiffs_page_ix new_pix,
|
|
u32_t new_size) {
|
|
(void)fd;
|
|
// update index caches in all file descriptors
|
|
obj_id &= ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
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 || (cur_fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG) != obj_id) continue;
|
|
if (spix == 0) {
|
|
if (ev == SPIFFS_EV_IX_NEW || ev == SPIFFS_EV_IX_UPD) {
|
|
SPIFFS_DBG(" callback: setting fd %i:%04x objix_hdr_pix to %04x, size:%i\n", cur_fd->file_nbr, cur_fd->obj_id, new_pix, new_size);
|
|
cur_fd->objix_hdr_pix = new_pix;
|
|
if (new_size != 0) {
|
|
cur_fd->size = new_size;
|
|
}
|
|
} else if (ev == SPIFFS_EV_IX_DEL) {
|
|
cur_fd->file_nbr = 0;
|
|
cur_fd->obj_id = SPIFFS_OBJ_ID_DELETED;
|
|
}
|
|
}
|
|
if (cur_fd->cursor_objix_spix == spix) {
|
|
if (ev == SPIFFS_EV_IX_NEW || ev == SPIFFS_EV_IX_UPD) {
|
|
SPIFFS_DBG(" callback: setting fd %i:%04x span:%04x objix_pix to %04x\n", cur_fd->file_nbr, cur_fd->obj_id, spix, new_pix);
|
|
cur_fd->cursor_objix_pix = new_pix;
|
|
} else {
|
|
cur_fd->cursor_objix_pix = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Open object by id
|
|
s32_t spiffs_object_open_by_id(
|
|
spiffs *fs,
|
|
spiffs_obj_id obj_id,
|
|
spiffs_fd *fd,
|
|
spiffs_flags flags,
|
|
spiffs_mode mode) {
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs_page_ix pix;
|
|
|
|
res = spiffs_obj_lu_find_id_and_span(fs, obj_id | SPIFFS_OBJ_ID_IX_FLAG, 0, 0, &pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = spiffs_object_open_by_page(fs, pix, fd, flags, mode);
|
|
|
|
return res;
|
|
}
|
|
|
|
// Open object by page index
|
|
s32_t spiffs_object_open_by_page(
|
|
spiffs *fs,
|
|
spiffs_page_ix pix,
|
|
spiffs_fd *fd,
|
|
spiffs_flags flags,
|
|
spiffs_mode mode) {
|
|
(void)mode;
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs_page_object_ix_header oix_hdr;
|
|
spiffs_obj_id obj_id;
|
|
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, pix), sizeof(spiffs_page_object_ix_header), (u8_t *)&oix_hdr);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
spiffs_block_ix bix = SPIFFS_BLOCK_FOR_PAGE(fs, pix);
|
|
int entry = SPIFFS_OBJ_LOOKUP_ENTRY_FOR_PAGE(fs, pix);
|
|
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU | SPIFFS_OP_C_READ,
|
|
0, SPIFFS_BLOCK_TO_PADDR(fs, bix) + entry * sizeof(spiffs_obj_id), sizeof(spiffs_obj_id), (u8_t *)&obj_id);
|
|
|
|
fd->fs = fs;
|
|
fd->objix_hdr_pix = pix;
|
|
fd->size = oix_hdr.size;
|
|
fd->offset = 0;
|
|
fd->cursor_objix_pix = pix;
|
|
fd->cursor_objix_spix = 0;
|
|
fd->obj_id = obj_id;
|
|
fd->flags = flags;
|
|
|
|
SPIFFS_VALIDATE_OBJIX(oix_hdr.p_hdr, fd->obj_id, 0);
|
|
|
|
SPIFFS_DBG("open: fd %i is obj id %04x\n", fd->file_nbr, fd->obj_id);
|
|
|
|
return res;
|
|
}
|
|
|
|
// Append to object
|
|
// keep current object index (header) page in fs->work buffer
|
|
s32_t spiffs_object_append(spiffs_fd *fd, u32_t offset, u8_t *data, u32_t len) {
|
|
spiffs *fs = fd->fs;
|
|
s32_t res = SPIFFS_OK;
|
|
u32_t written = 0;
|
|
|
|
res = spiffs_gc_check(fs, len + SPIFFS_DATA_PAGE_SIZE(fs)); // add an extra page of data worth for meta
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
spiffs_page_object_ix_header *objix_hdr = (spiffs_page_object_ix_header *)fs->work;
|
|
spiffs_page_object_ix *objix = (spiffs_page_object_ix *)fs->work;
|
|
spiffs_page_header p_hdr;
|
|
|
|
spiffs_span_ix cur_objix_spix = 0;
|
|
spiffs_span_ix prev_objix_spix = (spiffs_span_ix)-1;
|
|
spiffs_page_ix cur_objix_pix = fd->objix_hdr_pix;
|
|
spiffs_page_ix new_objix_hdr_page;
|
|
|
|
spiffs_span_ix data_spix = offset / SPIFFS_DATA_PAGE_SIZE(fs);
|
|
spiffs_page_ix data_page;
|
|
u32_t page_offs = offset % SPIFFS_DATA_PAGE_SIZE(fs);
|
|
|
|
// write all data
|
|
while (res == SPIFFS_OK && written < len) {
|
|
// calculate object index page span index
|
|
cur_objix_spix = SPIFFS_OBJ_IX_ENTRY_SPAN_IX(fs, data_spix);
|
|
|
|
// handle storing and loading of object indices
|
|
if (cur_objix_spix != prev_objix_spix) {
|
|
// new object index page
|
|
// within this clause we return directly if something fails, object index mess-up
|
|
if (written > 0) {
|
|
// store previous object index page, unless first pass
|
|
SPIFFS_DBG("append: %04x store objix %04x:%04x, written %i\n", fd->obj_id,
|
|
cur_objix_pix, prev_objix_spix, written);
|
|
if (prev_objix_spix == 0) {
|
|
// this is an update to object index header page
|
|
objix_hdr->size = offset+written;
|
|
if (offset == 0) {
|
|
// was an empty object, update same page (size was 0xffffffff)
|
|
res = spiffs_page_index_check(fs, fd, cur_objix_pix, 0);
|
|
SPIFFS_CHECK_RES(res);
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, cur_objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
} else {
|
|
// was a nonempty object, update to new page
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, fs->work, 0, offset+written, &new_objix_hdr_page);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_DBG("append: %04x store new objix_hdr, %04x:%04x, written %i\n", fd->obj_id,
|
|
new_objix_hdr_page, 0, written);
|
|
}
|
|
} else {
|
|
// this is an update to an object index page
|
|
res = spiffs_page_index_check(fs, fd, cur_objix_pix, prev_objix_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, cur_objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD,fd->obj_id, objix->p_hdr.span_ix, cur_objix_pix, 0);
|
|
// update length in object index header page
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, 0, 0, offset+written, &new_objix_hdr_page);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_DBG("append: %04x store new size I %i in objix_hdr, %04x:%04x, written %i\n", fd->obj_id,
|
|
offset+written, new_objix_hdr_page, 0, written);
|
|
}
|
|
fd->size = offset+written;
|
|
fd->offset = offset+written;
|
|
}
|
|
|
|
// create or load new object index page
|
|
if (cur_objix_spix == 0) {
|
|
// load object index header page, must always exist
|
|
SPIFFS_DBG("append: %04x load objixhdr page %04x:%04x\n", fd->obj_id, cur_objix_pix, cur_objix_spix);
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, cur_objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_VALIDATE_OBJIX(objix_hdr->p_hdr, fd->obj_id, cur_objix_spix);
|
|
} else {
|
|
spiffs_span_ix len_objix_spix = SPIFFS_OBJ_IX_ENTRY_SPAN_IX(fs, (fd->size-1)/SPIFFS_DATA_PAGE_SIZE(fs));
|
|
// on subsequent passes, create a new object index page
|
|
if (written > 0 || cur_objix_spix > len_objix_spix) {
|
|
p_hdr.obj_id = fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG;
|
|
p_hdr.span_ix = cur_objix_spix;
|
|
p_hdr.flags = 0xff & ~(SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_INDEX);
|
|
res = spiffs_page_allocate_data(fs, fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG,
|
|
&p_hdr, 0, 0, 0, 1, &cur_objix_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_NEW, fd->obj_id, cur_objix_spix, cur_objix_pix, 0);
|
|
// quick "load" of new object index page
|
|
c_memset(fs->work, 0xff, SPIFFS_CFG_LOG_PAGE_SZ(fs));
|
|
c_memcpy(fs->work, &p_hdr, sizeof(spiffs_page_header));
|
|
SPIFFS_DBG("append: %04x create objix page, %04x:%04x, written %i\n", fd->obj_id
|
|
, cur_objix_pix, cur_objix_spix, written);
|
|
} else {
|
|
// on first pass, we load existing object index page
|
|
spiffs_page_ix pix;
|
|
SPIFFS_DBG("append: %04x find objix span_ix:%04x\n", fd->obj_id, cur_objix_spix);
|
|
if (fd->cursor_objix_spix == cur_objix_spix) {
|
|
pix = fd->cursor_objix_pix;
|
|
} else {
|
|
res = spiffs_obj_lu_find_id_and_span(fs, fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG, cur_objix_spix, 0, &pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
SPIFFS_DBG("append: %04x found object index at page %04x [fd size %i]\n", fd->obj_id, pix, fd->size);
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_VALIDATE_OBJIX(objix_hdr->p_hdr, fd->obj_id, cur_objix_spix);
|
|
cur_objix_pix = pix;
|
|
}
|
|
fd->cursor_objix_pix = cur_objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
fd->offset = offset+written;
|
|
fd->size = offset+written;
|
|
}
|
|
prev_objix_spix = cur_objix_spix;
|
|
}
|
|
|
|
// write data
|
|
u32_t to_write = MIN(len-written, SPIFFS_DATA_PAGE_SIZE(fs) - page_offs);
|
|
if (page_offs == 0) {
|
|
// at beginning of a page, allocate and write a new page of data
|
|
p_hdr.obj_id = fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
p_hdr.span_ix = data_spix;
|
|
p_hdr.flags = 0xff & ~(SPIFFS_PH_FLAG_FINAL); // finalize immediately
|
|
res = spiffs_page_allocate_data(fs, fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG,
|
|
&p_hdr, &data[written], to_write, page_offs, 1, &data_page);
|
|
SPIFFS_DBG("append: %04x store new data page, %04x:%04x offset:%i, len %i, written %i\n", fd->obj_id,
|
|
data_page, data_spix, page_offs, to_write, written);
|
|
} else {
|
|
// append to existing page, fill out free data in existing page
|
|
if (cur_objix_spix == 0) {
|
|
// get data page from object index header page
|
|
data_page = ((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix];
|
|
} else {
|
|
// get data page from object index page
|
|
data_page = ((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)];
|
|
}
|
|
|
|
res = spiffs_page_data_check(fs, fd, data_page, data_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, data_page) + sizeof(spiffs_page_header) + page_offs, to_write, &data[written]);
|
|
SPIFFS_DBG("append: %04x store to existing data page, %04x:%04x offset:%i, len %i, written %i\n", fd->obj_id
|
|
, data_page, data_spix, page_offs, to_write, written);
|
|
}
|
|
|
|
if (res != SPIFFS_OK) break;
|
|
|
|
// update memory representation of object index page with new data page
|
|
if (cur_objix_spix == 0) {
|
|
// update object index header page
|
|
((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix] = data_page;
|
|
SPIFFS_DBG("append: %04x wrote page %04x to objix_hdr entry %02x in mem\n", fd->obj_id
|
|
, data_page, data_spix);
|
|
objix_hdr->size = offset+written;
|
|
} else {
|
|
// update object index page
|
|
((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)] = data_page;
|
|
SPIFFS_DBG("append: %04x wrote page %04x to objix entry %02x in mem\n", fd->obj_id
|
|
, data_page, SPIFFS_OBJ_IX_ENTRY(fs, data_spix));
|
|
}
|
|
|
|
// update internals
|
|
page_offs = 0;
|
|
data_spix++;
|
|
written += to_write;
|
|
} // while all data
|
|
|
|
fd->size = offset+written;
|
|
fd->offset = offset+written;
|
|
fd->cursor_objix_pix = cur_objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
|
|
// finalize updated object indices
|
|
s32_t res2 = SPIFFS_OK;
|
|
if (cur_objix_spix != 0) {
|
|
// wrote beyond object index header page
|
|
// write last modified object index page, unless object header index page
|
|
SPIFFS_DBG("append: %04x store objix page, %04x:%04x, written %i\n", fd->obj_id,
|
|
cur_objix_pix, cur_objix_spix, written);
|
|
|
|
res2 = spiffs_page_index_check(fs, fd, cur_objix_pix, cur_objix_spix);
|
|
SPIFFS_CHECK_RES(res2);
|
|
|
|
res2 = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, cur_objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res2);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD, fd->obj_id, objix->p_hdr.span_ix, cur_objix_pix, 0);
|
|
|
|
// update size in object header index page
|
|
res2 = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, 0, 0, offset+written, &new_objix_hdr_page);
|
|
SPIFFS_DBG("append: %04x store new size II %i in objix_hdr, %04x:%04x, written %i, res %i\n", fd->obj_id
|
|
, offset+written, new_objix_hdr_page, 0, written, res2);
|
|
SPIFFS_CHECK_RES(res2);
|
|
} else {
|
|
// wrote within object index header page
|
|
if (offset == 0) {
|
|
// wrote to empty object - simply update size and write whole page
|
|
objix_hdr->size = offset+written;
|
|
SPIFFS_DBG("append: %04x store fresh objix_hdr page, %04x:%04x, written %i\n", fd->obj_id
|
|
, cur_objix_pix, cur_objix_spix, written);
|
|
|
|
res2 = spiffs_page_index_check(fs, fd, cur_objix_pix, cur_objix_spix);
|
|
SPIFFS_CHECK_RES(res2);
|
|
|
|
res2 = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, cur_objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res2);
|
|
// callback on object index update
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD, fd->obj_id, objix_hdr->p_hdr.span_ix, cur_objix_pix, objix_hdr->size);
|
|
} else {
|
|
// modifying object index header page, update size and make new copy
|
|
res2 = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, fs->work, 0, offset+written, &new_objix_hdr_page);
|
|
SPIFFS_DBG("append: %04x store modified objix_hdr page, %04x:%04x, written %i\n", fd->obj_id
|
|
, new_objix_hdr_page, 0, written);
|
|
SPIFFS_CHECK_RES(res2);
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
// Modify object
|
|
// keep current object index (header) page in fs->work buffer
|
|
s32_t spiffs_object_modify(spiffs_fd *fd, u32_t offset, u8_t *data, u32_t len) {
|
|
spiffs *fs = fd->fs;
|
|
s32_t res = SPIFFS_OK;
|
|
u32_t written = 0;
|
|
|
|
res = spiffs_gc_check(fs, len);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
spiffs_page_object_ix_header *objix_hdr = (spiffs_page_object_ix_header *)fs->work;
|
|
spiffs_page_object_ix *objix = (spiffs_page_object_ix *)fs->work;
|
|
spiffs_page_header p_hdr;
|
|
|
|
spiffs_span_ix cur_objix_spix = 0;
|
|
spiffs_span_ix prev_objix_spix = (spiffs_span_ix)-1;
|
|
spiffs_page_ix cur_objix_pix = fd->objix_hdr_pix;
|
|
spiffs_page_ix new_objix_hdr_pix;
|
|
|
|
spiffs_span_ix data_spix = offset / SPIFFS_DATA_PAGE_SIZE(fs);
|
|
spiffs_page_ix data_pix;
|
|
u32_t page_offs = offset % SPIFFS_DATA_PAGE_SIZE(fs);
|
|
|
|
|
|
// write all data
|
|
while (res == SPIFFS_OK && written < len) {
|
|
// calculate object index page span index
|
|
cur_objix_spix = SPIFFS_OBJ_IX_ENTRY_SPAN_IX(fs, data_spix);
|
|
|
|
// handle storing and loading of object indices
|
|
if (cur_objix_spix != prev_objix_spix) {
|
|
// new object index page
|
|
// within this clause we return directly if something fails, object index mess-up
|
|
if (written > 0) {
|
|
// store previous object index (header) page, unless first pass
|
|
if (prev_objix_spix == 0) {
|
|
// store previous object index header page
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, fs->work, 0, 0, &new_objix_hdr_pix);
|
|
SPIFFS_DBG("modify: store modified objix_hdr page, %04x:%04x, written %i\n", new_objix_hdr_pix, 0, written);
|
|
SPIFFS_CHECK_RES(res);
|
|
} else {
|
|
// store new version of previous object index page
|
|
spiffs_page_ix new_objix_pix;
|
|
|
|
res = spiffs_page_index_check(fs, fd, cur_objix_pix, prev_objix_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = spiffs_page_move(fs, fd->file_nbr, (u8_t*)objix, fd->obj_id, 0, cur_objix_pix, &new_objix_pix);
|
|
SPIFFS_DBG("modify: store previous modified objix page, %04x:%04x, written %i\n", new_objix_pix, objix->p_hdr.span_ix, written);
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD, fd->obj_id, objix->p_hdr.span_ix, new_objix_pix, 0);
|
|
}
|
|
}
|
|
|
|
// load next object index page
|
|
if (cur_objix_spix == 0) {
|
|
// load object index header page, must exist
|
|
SPIFFS_DBG("modify: load objixhdr page %04x:%04x\n", cur_objix_pix, cur_objix_spix);
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, cur_objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_VALIDATE_OBJIX(objix_hdr->p_hdr, fd->obj_id, cur_objix_spix);
|
|
} else {
|
|
// load existing object index page on first pass
|
|
spiffs_page_ix pix;
|
|
SPIFFS_DBG("modify: find objix span_ix:%04x\n", cur_objix_spix);
|
|
if (fd->cursor_objix_spix == cur_objix_spix) {
|
|
pix = fd->cursor_objix_pix;
|
|
} else {
|
|
res = spiffs_obj_lu_find_id_and_span(fs, fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG, cur_objix_spix, 0, &pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
SPIFFS_DBG("modify: found object index at page %04x\n", pix);
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_VALIDATE_OBJIX(objix_hdr->p_hdr, fd->obj_id, cur_objix_spix);
|
|
cur_objix_pix = pix;
|
|
}
|
|
fd->cursor_objix_pix = cur_objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
fd->offset = offset+written;
|
|
prev_objix_spix = cur_objix_spix;
|
|
}
|
|
|
|
// write partial data
|
|
u32_t to_write = MIN(len-written, SPIFFS_DATA_PAGE_SIZE(fs) - page_offs);
|
|
spiffs_page_ix orig_data_pix;
|
|
if (cur_objix_spix == 0) {
|
|
// get data page from object index header page
|
|
orig_data_pix = ((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix];
|
|
} else {
|
|
// get data page from object index page
|
|
orig_data_pix = ((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)];
|
|
}
|
|
|
|
p_hdr.obj_id = fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
p_hdr.span_ix = data_spix;
|
|
p_hdr.flags = 0xff;
|
|
if (page_offs == 0 && to_write == SPIFFS_DATA_PAGE_SIZE(fs)) {
|
|
// a full page, allocate and write a new page of data
|
|
res = spiffs_page_allocate_data(fs, fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG,
|
|
&p_hdr, &data[written], to_write, page_offs, 1, &data_pix);
|
|
SPIFFS_DBG("modify: store new data page, %04x:%04x offset:%i, len %i, written %i\n", data_pix, data_spix, page_offs, to_write, written);
|
|
} else {
|
|
// write to existing page, allocate new and copy unmodified data
|
|
|
|
res = spiffs_page_data_check(fs, fd, orig_data_pix, data_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = spiffs_page_allocate_data(fs, fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG,
|
|
&p_hdr, 0, 0, 0, 0, &data_pix);
|
|
if (res != SPIFFS_OK) break;
|
|
|
|
// copy unmodified data
|
|
if (page_offs > 0) {
|
|
// before modification
|
|
res = spiffs_phys_cpy(fs, fd->file_nbr,
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + sizeof(spiffs_page_header),
|
|
SPIFFS_PAGE_TO_PADDR(fs, orig_data_pix) + sizeof(spiffs_page_header),
|
|
page_offs);
|
|
if (res != SPIFFS_OK) break;
|
|
}
|
|
if (page_offs + to_write < SPIFFS_DATA_PAGE_SIZE(fs)) {
|
|
// after modification
|
|
res = spiffs_phys_cpy(fs, fd->file_nbr,
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + sizeof(spiffs_page_header) + page_offs + to_write,
|
|
SPIFFS_PAGE_TO_PADDR(fs, orig_data_pix) + sizeof(spiffs_page_header) + page_offs + to_write,
|
|
SPIFFS_DATA_PAGE_SIZE(fs) - (page_offs + to_write));
|
|
if (res != SPIFFS_OK) break;
|
|
}
|
|
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr,
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + sizeof(spiffs_page_header) + page_offs, to_write, &data[written]);
|
|
if (res != SPIFFS_OK) break;
|
|
p_hdr.flags &= ~SPIFFS_PH_FLAG_FINAL;
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr,
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + offsetof(spiffs_page_header, flags),
|
|
sizeof(u8_t),
|
|
(u8_t *)&p_hdr.flags);
|
|
if (res != SPIFFS_OK) break;
|
|
|
|
SPIFFS_DBG("modify: store to existing data page, src:%04x, dst:%04x:%04x offset:%i, len %i, written %i\n", orig_data_pix, data_pix, data_spix, page_offs, to_write, written);
|
|
}
|
|
|
|
// delete original data page
|
|
res = spiffs_page_delete(fs, orig_data_pix);
|
|
if (res != SPIFFS_OK) break;
|
|
// update memory representation of object index page with new data page
|
|
if (cur_objix_spix == 0) {
|
|
// update object index header page
|
|
((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix] = data_pix;
|
|
SPIFFS_DBG("modify: wrote page %04x to objix_hdr entry %02x in mem\n", data_pix, data_spix);
|
|
} else {
|
|
// update object index page
|
|
((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)] = data_pix;
|
|
SPIFFS_DBG("modify: wrote page %04x to objix entry %02x in mem\n", data_pix, SPIFFS_OBJ_IX_ENTRY(fs, data_spix));
|
|
}
|
|
|
|
// update internals
|
|
page_offs = 0;
|
|
data_spix++;
|
|
written += to_write;
|
|
} // while all data
|
|
|
|
fd->offset = offset+written;
|
|
fd->cursor_objix_pix = cur_objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
|
|
// finalize updated object indices
|
|
s32_t res2 = SPIFFS_OK;
|
|
if (cur_objix_spix != 0) {
|
|
// wrote beyond object index header page
|
|
// write last modified object index page
|
|
// move and update page
|
|
spiffs_page_ix new_objix_pix;
|
|
|
|
res2 = spiffs_page_index_check(fs, fd, cur_objix_pix, cur_objix_spix);
|
|
SPIFFS_CHECK_RES(res2);
|
|
|
|
res2 = spiffs_page_move(fs, fd->file_nbr, (u8_t*)objix, fd->obj_id, 0, cur_objix_pix, &new_objix_pix);
|
|
SPIFFS_DBG("modify: store modified objix page, %04x:%04x, written %i\n", new_objix_pix, cur_objix_spix, written);
|
|
fd->cursor_objix_pix = new_objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
SPIFFS_CHECK_RES(res2);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD, fd->obj_id, objix->p_hdr.span_ix, new_objix_pix, 0);
|
|
|
|
} else {
|
|
// wrote within object index header page
|
|
res2 = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, fs->work, 0, 0, &new_objix_hdr_pix);
|
|
SPIFFS_DBG("modify: store modified objix_hdr page, %04x:%04x, written %i\n", new_objix_hdr_pix, 0, written);
|
|
SPIFFS_CHECK_RES(res2);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static s32_t spiffs_object_find_object_index_header_by_name_v(
|
|
spiffs *fs,
|
|
spiffs_obj_id obj_id,
|
|
spiffs_block_ix bix,
|
|
int ix_entry,
|
|
u32_t user_data,
|
|
void *user_p) {
|
|
(void)user_data;
|
|
s32_t res;
|
|
spiffs_page_object_ix_header objix_hdr;
|
|
spiffs_page_ix pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, ix_entry);
|
|
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;
|
|
}
|
|
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);
|
|
SPIFFS_CHECK_RES(res);
|
|
if (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)) {
|
|
if (strcmp((char *)user_p, (char *)objix_hdr.name) == 0) {
|
|
return SPIFFS_OK;
|
|
}
|
|
}
|
|
|
|
return SPIFFS_VIS_COUNTINUE;
|
|
}
|
|
|
|
// Finds object index header page by name
|
|
s32_t spiffs_object_find_object_index_header_by_name(
|
|
spiffs *fs,
|
|
u8_t name[SPIFFS_OBJ_NAME_LEN],
|
|
spiffs_page_ix *pix) {
|
|
s32_t res;
|
|
spiffs_block_ix bix;
|
|
int entry;
|
|
|
|
res = spiffs_obj_lu_find_entry_visitor(fs,
|
|
fs->cursor_block_ix,
|
|
fs->cursor_obj_lu_entry,
|
|
0,
|
|
0,
|
|
spiffs_object_find_object_index_header_by_name_v,
|
|
0,
|
|
name,
|
|
&bix,
|
|
&entry);
|
|
|
|
if (res == SPIFFS_VIS_END) {
|
|
res = SPIFFS_ERR_NOT_FOUND;
|
|
}
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
if (pix) {
|
|
*pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, entry);
|
|
}
|
|
|
|
fs->cursor_block_ix = bix;
|
|
fs->cursor_obj_lu_entry = entry;
|
|
|
|
return res;
|
|
}
|
|
|
|
// Truncates object to new size. If new size is null, object may be removed totally
|
|
s32_t spiffs_object_truncate(
|
|
spiffs_fd *fd,
|
|
u32_t new_size,
|
|
u8_t remove) {
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs *fs = fd->fs;
|
|
|
|
res = spiffs_gc_check(fs, 0);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
spiffs_page_ix objix_pix = fd->objix_hdr_pix;
|
|
spiffs_span_ix data_spix = (fd->size > 0 ? fd->size-1 : 0) / SPIFFS_DATA_PAGE_SIZE(fs);
|
|
u32_t cur_size = fd->size == (u32_t)SPIFFS_UNDEFINED_LEN ? 0 : fd->size ;
|
|
spiffs_span_ix cur_objix_spix = 0;
|
|
spiffs_span_ix prev_objix_spix = (spiffs_span_ix)-1;
|
|
spiffs_page_object_ix_header *objix_hdr = (spiffs_page_object_ix_header *)fs->work;
|
|
spiffs_page_object_ix *objix = (spiffs_page_object_ix *)fs->work;
|
|
spiffs_page_ix data_pix;
|
|
spiffs_page_ix new_objix_hdr_pix;
|
|
|
|
// before truncating, check if object is to be fully removed and mark this
|
|
if (remove && new_size == 0) {
|
|
u8_t flags = ~( SPIFFS_PH_FLAG_USED | SPIFFS_PH_FLAG_INDEX | SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_IXDELE);
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, fd->objix_hdr_pix) + offsetof(spiffs_page_header, flags),
|
|
sizeof(u8_t),
|
|
(u8_t *)&flags);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
|
|
// delete from end of object until desired len is reached
|
|
while (cur_size > new_size) {
|
|
cur_objix_spix = SPIFFS_OBJ_IX_ENTRY_SPAN_IX(fs, data_spix);
|
|
|
|
// put object index for current data span index in work buffer
|
|
if (prev_objix_spix != cur_objix_spix) {
|
|
if (prev_objix_spix != (spiffs_span_ix)-1) {
|
|
// remove previous object index page
|
|
SPIFFS_DBG("truncate: delete objix page %04x:%04x\n", objix_pix, prev_objix_spix);
|
|
|
|
res = spiffs_page_index_check(fs, fd, objix_pix, prev_objix_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = spiffs_page_delete(fs, objix_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_DEL, fd->obj_id, objix->p_hdr.span_ix, objix_pix, 0);
|
|
if (prev_objix_spix > 0) {
|
|
// update object index header page
|
|
SPIFFS_DBG("truncate: update objix hdr page %04x:%04x to size %i\n", fd->objix_hdr_pix, prev_objix_spix, cur_size);
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, 0, 0, cur_size, &new_objix_hdr_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
fd->size = cur_size;
|
|
}
|
|
}
|
|
// load current object index (header) page
|
|
if (cur_objix_spix == 0) {
|
|
objix_pix = fd->objix_hdr_pix;
|
|
} else {
|
|
res = spiffs_obj_lu_find_id_and_span(fs, fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG, cur_objix_spix, 0, &objix_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
|
|
SPIFFS_DBG("truncate: load objix page %04x:%04x for data spix:%04x\n", objix_pix, cur_objix_spix, data_spix);
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_VALIDATE_OBJIX(objix_hdr->p_hdr, fd->obj_id, cur_objix_spix);
|
|
fd->cursor_objix_pix = objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
fd->offset = cur_size;
|
|
|
|
prev_objix_spix = cur_objix_spix;
|
|
}
|
|
|
|
if (cur_objix_spix == 0) {
|
|
// get data page from object index header page
|
|
data_pix = ((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix];
|
|
((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix] = SPIFFS_OBJ_ID_FREE;
|
|
} else {
|
|
// get data page from object index page
|
|
data_pix = ((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)];
|
|
((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)] = SPIFFS_OBJ_ID_FREE;
|
|
}
|
|
|
|
SPIFFS_DBG("truncate: got data pix %04x\n", data_pix);
|
|
|
|
if (cur_size - SPIFFS_DATA_PAGE_SIZE(fs) >= new_size) {
|
|
// delete full data page
|
|
res = spiffs_page_data_check(fs, fd, data_pix, data_spix);
|
|
if (res != SPIFFS_ERR_DELETED && res != SPIFFS_OK) break;
|
|
|
|
if (res == SPIFFS_OK) {
|
|
res = spiffs_page_delete(fs, data_pix);
|
|
if (res != SPIFFS_OK) break;
|
|
} else if (res == SPIFFS_ERR_DELETED) {
|
|
res = SPIFFS_OK;
|
|
}
|
|
|
|
// update current size
|
|
if (cur_size % SPIFFS_DATA_PAGE_SIZE(fs) == 0) {
|
|
cur_size -= SPIFFS_DATA_PAGE_SIZE(fs);
|
|
} else {
|
|
cur_size -= cur_size % SPIFFS_DATA_PAGE_SIZE(fs);
|
|
}
|
|
fd->size = cur_size;
|
|
fd->offset = cur_size;
|
|
SPIFFS_DBG("truncate: delete data page %04x for data spix:%04x, cur_size:%i\n", data_pix, data_spix, cur_size);
|
|
} else {
|
|
// delete last page, partially
|
|
spiffs_page_header p_hdr;
|
|
spiffs_page_ix new_data_pix;
|
|
u32_t bytes_to_remove = SPIFFS_DATA_PAGE_SIZE(fs) - (new_size % SPIFFS_DATA_PAGE_SIZE(fs));
|
|
SPIFFS_DBG("truncate: delete %i bytes from data page %04x for data spix:%04x, cur_size:%i\n", bytes_to_remove, data_pix, data_spix, cur_size);
|
|
|
|
res = spiffs_page_data_check(fs, fd, data_pix, data_spix);
|
|
if (res != SPIFFS_OK) break;
|
|
|
|
p_hdr.obj_id = fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
p_hdr.span_ix = data_spix;
|
|
p_hdr.flags = 0xff;
|
|
// allocate new page and copy unmodified data
|
|
res = spiffs_page_allocate_data(fs, fd->obj_id & ~SPIFFS_OBJ_ID_IX_FLAG,
|
|
&p_hdr, 0, 0, 0, 0, &new_data_pix);
|
|
if (res != SPIFFS_OK) break;
|
|
res = spiffs_phys_cpy(fs, 0,
|
|
SPIFFS_PAGE_TO_PADDR(fs, new_data_pix) + sizeof(spiffs_page_header),
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + sizeof(spiffs_page_header),
|
|
SPIFFS_DATA_PAGE_SIZE(fs) - bytes_to_remove);
|
|
if (res != SPIFFS_OK) break;
|
|
// delete original data page
|
|
res = spiffs_page_delete(fs, data_pix);
|
|
if (res != SPIFFS_OK) break;
|
|
p_hdr.flags &= ~SPIFFS_PH_FLAG_FINAL;
|
|
res = _spiffs_wr(fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_UPDT,
|
|
fd->file_nbr,
|
|
SPIFFS_PAGE_TO_PADDR(fs, new_data_pix) + offsetof(spiffs_page_header, flags),
|
|
sizeof(u8_t),
|
|
(u8_t *)&p_hdr.flags);
|
|
if (res != SPIFFS_OK) break;
|
|
|
|
// update memory representation of object index page with new data page
|
|
if (cur_objix_spix == 0) {
|
|
// update object index header page
|
|
((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix] = new_data_pix;
|
|
SPIFFS_DBG("truncate: wrote page %04x to objix_hdr entry %02x in mem\n", new_data_pix, SPIFFS_OBJ_IX_ENTRY(fs, data_spix));
|
|
} else {
|
|
// update object index page
|
|
((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)] = new_data_pix;
|
|
SPIFFS_DBG("truncate: wrote page %04x to objix entry %02x in mem\n", new_data_pix, SPIFFS_OBJ_IX_ENTRY(fs, data_spix));
|
|
}
|
|
cur_size = new_size;
|
|
fd->size = new_size;
|
|
fd->offset = cur_size;
|
|
break;
|
|
}
|
|
data_spix--;
|
|
} // while all data
|
|
|
|
// update object indices
|
|
if (cur_objix_spix == 0) {
|
|
// update object index header page
|
|
if (cur_size == 0) {
|
|
if (remove) {
|
|
// remove object altogether
|
|
SPIFFS_DBG("truncate: remove object index header page %04x\n", objix_pix);
|
|
|
|
res = spiffs_page_index_check(fs, fd, objix_pix, 0);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
res = spiffs_page_delete(fs, objix_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_DEL, fd->obj_id, 0, objix_pix, 0);
|
|
} else {
|
|
// make uninitialized object
|
|
SPIFFS_DBG("truncate: reset objix_hdr page %04x\n", objix_pix);
|
|
c_memset(fs->work + sizeof(spiffs_page_object_ix_header), 0xff,
|
|
SPIFFS_CFG_LOG_PAGE_SZ(fs) - sizeof(spiffs_page_object_ix_header));
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
objix_pix, fs->work, 0, SPIFFS_UNDEFINED_LEN, &new_objix_hdr_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
} else {
|
|
// update object index header page
|
|
SPIFFS_DBG("truncate: update object index header page with indices and size\n");
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
objix_pix, fs->work, 0, cur_size, &new_objix_hdr_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
} else {
|
|
// update both current object index page and object index header page
|
|
spiffs_page_ix new_objix_pix;
|
|
|
|
res = spiffs_page_index_check(fs, fd, objix_pix, cur_objix_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
|
|
// move and update object index page
|
|
res = spiffs_page_move(fs, fd->file_nbr, (u8_t*)objix_hdr, fd->obj_id, 0, objix_pix, &new_objix_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
spiffs_cb_object_event(fs, fd, SPIFFS_EV_IX_UPD, fd->obj_id, objix->p_hdr.span_ix, new_objix_pix, 0);
|
|
SPIFFS_DBG("truncate: store modified objix page, %04x:%04x\n", new_objix_pix, cur_objix_spix);
|
|
fd->cursor_objix_pix = new_objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
fd->offset = cur_size;
|
|
// update object index header page with new size
|
|
res = spiffs_object_update_index_hdr(fs, fd, fd->obj_id,
|
|
fd->objix_hdr_pix, 0, 0, cur_size, &new_objix_hdr_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
fd->size = cur_size;
|
|
|
|
return res;
|
|
}
|
|
|
|
s32_t spiffs_object_read(
|
|
spiffs_fd *fd,
|
|
u32_t offset,
|
|
u32_t len,
|
|
u8_t *dst) {
|
|
s32_t res = SPIFFS_OK;
|
|
spiffs *fs = fd->fs;
|
|
spiffs_page_ix objix_pix;
|
|
spiffs_page_ix data_pix;
|
|
spiffs_span_ix data_spix = offset / SPIFFS_DATA_PAGE_SIZE(fs);
|
|
u32_t cur_offset = offset;
|
|
spiffs_span_ix cur_objix_spix;
|
|
spiffs_span_ix prev_objix_spix = (spiffs_span_ix)-1;
|
|
spiffs_page_object_ix_header *objix_hdr = (spiffs_page_object_ix_header *)fs->work;
|
|
spiffs_page_object_ix *objix = (spiffs_page_object_ix *)fs->work;
|
|
|
|
while (cur_offset < offset + len) {
|
|
cur_objix_spix = SPIFFS_OBJ_IX_ENTRY_SPAN_IX(fs, data_spix);
|
|
if (prev_objix_spix != cur_objix_spix) {
|
|
// load current object index (header) page
|
|
if (cur_objix_spix == 0) {
|
|
objix_pix = fd->objix_hdr_pix;
|
|
} else {
|
|
SPIFFS_DBG("read: find objix %04x:%04x\n", fd->obj_id, cur_objix_spix);
|
|
res = spiffs_obj_lu_find_id_and_span(fs, fd->obj_id | SPIFFS_OBJ_ID_IX_FLAG, cur_objix_spix, 0, &objix_pix);
|
|
SPIFFS_CHECK_RES(res);
|
|
}
|
|
SPIFFS_DBG("read: load objix page %04x:%04x for data spix:%04x\n", objix_pix, cur_objix_spix, data_spix);
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_IX | SPIFFS_OP_C_READ,
|
|
fd->file_nbr, SPIFFS_PAGE_TO_PADDR(fs, objix_pix), SPIFFS_CFG_LOG_PAGE_SZ(fs), fs->work);
|
|
SPIFFS_CHECK_RES(res);
|
|
SPIFFS_VALIDATE_OBJIX(objix->p_hdr, fd->obj_id, cur_objix_spix);
|
|
|
|
fd->offset = cur_offset;
|
|
fd->cursor_objix_pix = objix_pix;
|
|
fd->cursor_objix_spix = cur_objix_spix;
|
|
|
|
prev_objix_spix = cur_objix_spix;
|
|
}
|
|
|
|
if (cur_objix_spix == 0) {
|
|
// get data page from object index header page
|
|
data_pix = ((spiffs_page_ix*)((u8_t *)objix_hdr + sizeof(spiffs_page_object_ix_header)))[data_spix];
|
|
} else {
|
|
// get data page from object index page
|
|
data_pix = ((spiffs_page_ix*)((u8_t *)objix + sizeof(spiffs_page_object_ix)))[SPIFFS_OBJ_IX_ENTRY(fs, data_spix)];
|
|
}
|
|
|
|
// all remaining data
|
|
u32_t len_to_read = offset + len - cur_offset;
|
|
// remaining data in page
|
|
len_to_read = MIN(len_to_read, SPIFFS_DATA_PAGE_SIZE(fs) - (cur_offset % SPIFFS_DATA_PAGE_SIZE(fs)));
|
|
// remaining data in file
|
|
len_to_read = MIN(len_to_read, fd->size);
|
|
SPIFFS_DBG("read: offset:%i rd:%i data spix:%04x is data_pix:%04x addr:%08x\n", cur_offset, len_to_read, data_spix, data_pix,
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + sizeof(spiffs_page_header) + (cur_offset % SPIFFS_DATA_PAGE_SIZE(fs)));
|
|
if (len_to_read <= 0) {
|
|
res = SPIFFS_ERR_END_OF_OBJECT;
|
|
break;
|
|
}
|
|
res = spiffs_page_data_check(fs, fd, data_pix, data_spix);
|
|
SPIFFS_CHECK_RES(res);
|
|
res = _spiffs_rd(
|
|
fs, SPIFFS_OP_T_OBJ_DA | SPIFFS_OP_C_READ,
|
|
fd->file_nbr,
|
|
SPIFFS_PAGE_TO_PADDR(fs, data_pix) + sizeof(spiffs_page_header) + (cur_offset % SPIFFS_DATA_PAGE_SIZE(fs)),
|
|
len_to_read,
|
|
dst);
|
|
SPIFFS_CHECK_RES(res);
|
|
dst += len_to_read;
|
|
cur_offset += len_to_read;
|
|
fd->offset = cur_offset;
|
|
data_spix++;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
typedef struct {
|
|
spiffs_obj_id min_obj_id;
|
|
spiffs_obj_id max_obj_id;
|
|
u32_t compaction;
|
|
const u8_t *conflicting_name;
|
|
} spiffs_free_obj_id_state;
|
|
|
|
static s32_t spiffs_obj_lu_find_free_obj_id_bitmap_v(spiffs *fs, spiffs_obj_id id, spiffs_block_ix bix, int ix_entry,
|
|
u32_t user_data, void *user_p) {
|
|
if (id != SPIFFS_OBJ_ID_FREE && id != SPIFFS_OBJ_ID_DELETED) {
|
|
spiffs_obj_id min_obj_id = user_data;
|
|
u8_t *conflicting_name = (u8_t *)user_p;
|
|
|
|
// if conflicting name parameter is given, also check if this name is found in object index hdrs
|
|
if (conflicting_name && (id & SPIFFS_OBJ_ID_IX_FLAG)) {
|
|
spiffs_page_ix pix = SPIFFS_OBJ_LOOKUP_ENTRY_TO_PIX(fs, bix, ix_entry);
|
|
int res;
|
|
spiffs_page_object_ix_header objix_hdr;
|
|
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);
|
|
SPIFFS_CHECK_RES(res);
|
|
if (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)) {
|
|
if (strcmp((char *)user_p, (char *)objix_hdr.name) == 0) {
|
|
return SPIFFS_ERR_CONFLICTING_NAME;
|
|
}
|
|
}
|
|
}
|
|
|
|
id &= ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
u32_t bit_ix = (id-min_obj_id) & 7;
|
|
int byte_ix = (id-min_obj_id) >> 3;
|
|
if (byte_ix >= 0 && (u32_t)byte_ix < SPIFFS_CFG_LOG_PAGE_SZ(fs)) {
|
|
fs->work[byte_ix] |= (1<<bit_ix);
|
|
}
|
|
}
|
|
return SPIFFS_VIS_COUNTINUE;
|
|
}
|
|
|
|
static s32_t spiffs_obj_lu_find_free_obj_id_compact_v(spiffs *fs, spiffs_obj_id id, spiffs_block_ix bix, int ix_entry,
|
|
u32_t user_data, void *user_p) {
|
|
(void)user_data;
|
|
if (id != SPIFFS_OBJ_ID_FREE && id != SPIFFS_OBJ_ID_DELETED && (id & SPIFFS_OBJ_ID_IX_FLAG)) {
|
|
s32_t res;
|
|
spiffs_free_obj_id_state *state = (spiffs_free_obj_id_state *)user_p;
|
|
spiffs_page_object_ix_header objix_hdr;
|
|
|
|
res = _spiffs_rd(fs, SPIFFS_OP_T_OBJ_LU2 | SPIFFS_OP_C_READ,
|
|
0, SPIFFS_OBJ_LOOKUP_ENTRY_TO_PADDR(fs, bix, ix_entry), sizeof(spiffs_page_object_ix_header), (u8_t*)&objix_hdr);
|
|
if (res == SPIFFS_OK && objix_hdr.p_hdr.span_ix == 0 &&
|
|
((objix_hdr.p_hdr.flags & (SPIFFS_PH_FLAG_INDEX | SPIFFS_PH_FLAG_FINAL | SPIFFS_PH_FLAG_DELET)) ==
|
|
(SPIFFS_PH_FLAG_DELET))) {
|
|
// ok object look up entry
|
|
if (state->conflicting_name && strcmp((const char *)state->conflicting_name, (char *)objix_hdr.name) == 0) {
|
|
return SPIFFS_ERR_CONFLICTING_NAME;
|
|
}
|
|
|
|
id &= ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
if (id >= state->min_obj_id && id <= state->max_obj_id) {
|
|
u8_t *map = (u8_t *)fs->work;
|
|
int ix = (id - state->min_obj_id) / state->compaction;
|
|
//SPIFFS_DBG("free_obj_id: add ix %i for id %04x min:%04x max%04x comp:%i\n", ix, id, state->min_obj_id, state->max_obj_id, state->compaction);
|
|
map[ix]++;
|
|
}
|
|
}
|
|
}
|
|
return SPIFFS_VIS_COUNTINUE;
|
|
}
|
|
|
|
// Scans thru all object lookup for object index header pages. If total possible number of
|
|
// object ids cannot fit into a work buffer, these are grouped. When a group containing free
|
|
// object ids is found, the object lu is again scanned for object ids within group and bitmasked.
|
|
// Finally, the bitmasked is searched for a free id
|
|
s32_t spiffs_obj_lu_find_free_obj_id(spiffs *fs, spiffs_obj_id *obj_id, u8_t *conflicting_name) {
|
|
s32_t res = SPIFFS_OK;
|
|
u32_t max_objects = (SPIFFS_CFG_PHYS_SZ(fs) / (u32_t)SPIFFS_CFG_LOG_PAGE_SZ(fs)) / 2;
|
|
spiffs_free_obj_id_state state;
|
|
spiffs_obj_id free_obj_id = SPIFFS_OBJ_ID_FREE;
|
|
state.min_obj_id = 1;
|
|
state.max_obj_id = max_objects + 1;
|
|
if (state.max_obj_id & SPIFFS_OBJ_ID_IX_FLAG) {
|
|
state.max_obj_id = ((spiffs_obj_id)-1) & ~SPIFFS_OBJ_ID_IX_FLAG;
|
|
}
|
|
state.compaction = 0;
|
|
state.conflicting_name = conflicting_name;
|
|
while (res == SPIFFS_OK && free_obj_id == SPIFFS_OBJ_ID_FREE) {
|
|
if (state.max_obj_id - state.min_obj_id <= (spiffs_obj_id)SPIFFS_CFG_LOG_PAGE_SZ(fs)*8) {
|
|
// possible to represent in bitmap
|
|
u32_t i, j;
|
|
SPIFFS_DBG("free_obj_id: BITM min:%04x max:%04x\n", state.min_obj_id, state.max_obj_id);
|
|
|
|
c_memset(fs->work, 0, SPIFFS_CFG_LOG_PAGE_SZ(fs));
|
|
res = spiffs_obj_lu_find_entry_visitor(fs, 0, 0, 0, 0, spiffs_obj_lu_find_free_obj_id_bitmap_v, state.min_obj_id,
|
|
conflicting_name, 0, 0);
|
|
if (res == SPIFFS_VIS_END) res = SPIFFS_OK;
|
|
SPIFFS_CHECK_RES(res);
|
|
// traverse bitmask until found free obj_id
|
|
for (i = 0; i < SPIFFS_CFG_LOG_PAGE_SZ(fs); i++) {
|
|
u8_t mask = fs->work[i];
|
|
if (mask == 0xff) {
|
|
continue;
|
|
}
|
|
for (j = 0; j < 8; j++) {
|
|
if ((mask & (1<<j)) == 0) {
|
|
*obj_id = (i<<3)+j+state.min_obj_id;
|
|
return SPIFFS_OK;
|
|
}
|
|
}
|
|
}
|
|
return SPIFFS_ERR_FULL;
|
|
} else {
|
|
// not possible to represent all ids in range in a bitmap, compact and count
|
|
if (state.compaction != 0) {
|
|
// select element in compacted table, decrease range and recompact
|
|
u32_t i, min_i = 0;
|
|
u8_t *map = (u8_t *)fs->work;
|
|
u8_t min_count = 0xff;
|
|
|
|
for (i = 0; i < SPIFFS_CFG_LOG_PAGE_SZ(fs)/sizeof(u8_t); i++) {
|
|
if (map[i] < min_count) {
|
|
min_count = map[i];
|
|
min_i = i;
|
|
if (min_count == 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (min_count == state.compaction) {
|
|
// there are no free objids!
|
|
SPIFFS_DBG("free_obj_id: compacted table is full\n");
|
|
return SPIFFS_ERR_FULL;
|
|
}
|
|
|
|
SPIFFS_DBG("free_obj_id: COMP select index:%i min_count:%i min:%04x max:%04x compact:%i\n", min_i, min_count, state.min_obj_id, state.max_obj_id, state.compaction);
|
|
|
|
if (min_count == 0) {
|
|
// no id in this range, skip compacting and use directly
|
|
*obj_id = min_i * state.compaction + state.min_obj_id;
|
|
return SPIFFS_OK;
|
|
} else {
|
|
SPIFFS_DBG("free_obj_id: COMP SEL chunk:%04x min:%04x -> %04x\n", state.compaction, state.min_obj_id, state.min_obj_id + min_i * state.compaction);
|
|
state.min_obj_id += min_i * state.compaction;
|
|
state.max_obj_id = state.min_obj_id + state.compaction;
|
|
// decrease compaction
|
|
}
|
|
if ((state.max_obj_id - state.min_obj_id <= (spiffs_obj_id)SPIFFS_CFG_LOG_PAGE_SZ(fs)*8)) {
|
|
// no need for compacting, use bitmap
|
|
continue;
|
|
}
|
|
}
|
|
// in a work memory of log_page_size bytes, we may fit in log_page_size ids
|
|
// todo what if compaction is > 255 - then we cannot fit it in a byte
|
|
state.compaction = (state.max_obj_id-state.min_obj_id) / ((SPIFFS_CFG_LOG_PAGE_SZ(fs) / sizeof(u8_t)));
|
|
SPIFFS_DBG("free_obj_id: COMP min:%04x max:%04x compact:%i\n", state.min_obj_id, state.max_obj_id, state.compaction);
|
|
|
|
c_memset(fs->work, 0, SPIFFS_CFG_LOG_PAGE_SZ(fs));
|
|
res = spiffs_obj_lu_find_entry_visitor(fs, 0, 0, 0, 0, spiffs_obj_lu_find_free_obj_id_compact_v, 0, &state, 0, 0);
|
|
if (res == SPIFFS_VIS_END) res = SPIFFS_OK;
|
|
SPIFFS_CHECK_RES(res);
|
|
state.conflicting_name = 0; // searched for conflicting name once, no need to do it again
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
s32_t spiffs_fd_find_new(spiffs *fs, spiffs_fd **fd) {
|
|
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) {
|
|
cur_fd->file_nbr = i+1;
|
|
*fd = cur_fd;
|
|
return SPIFFS_OK;
|
|
}
|
|
}
|
|
return SPIFFS_ERR_OUT_OF_FILE_DESCS;
|
|
}
|
|
|
|
s32_t spiffs_fd_return(spiffs *fs, spiffs_file f) {
|
|
if (f <= 0 || f > (s16_t)fs->fd_count) {
|
|
return SPIFFS_ERR_BAD_DESCRIPTOR;
|
|
}
|
|
spiffs_fd *fds = (spiffs_fd *)fs->fd_space;
|
|
spiffs_fd *fd = &fds[f-1];
|
|
if (fd->file_nbr == 0) {
|
|
return SPIFFS_ERR_FILE_CLOSED;
|
|
}
|
|
fd->file_nbr = 0;
|
|
return SPIFFS_OK;
|
|
}
|
|
|
|
s32_t spiffs_fd_get(spiffs *fs, spiffs_file f, spiffs_fd **fd) {
|
|
if (f <= 0 || f > (s16_t)fs->fd_count) {
|
|
return SPIFFS_ERR_BAD_DESCRIPTOR;
|
|
}
|
|
spiffs_fd *fds = (spiffs_fd *)fs->fd_space;
|
|
*fd = &fds[f-1];
|
|
if ((*fd)->file_nbr == 0) {
|
|
return SPIFFS_ERR_FILE_CLOSED;
|
|
}
|
|
return SPIFFS_OK;
|
|
}
|