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lilybook/components/spiffs/spiffs_hydrogen.c

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/*
* 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
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