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Copy pathSLFS.cpp
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464 lines (401 loc) · 11.8 KB
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/* SimpleLink API - Filesystem
* Supports the CC3100/CC3200 SimpleLink Serial Flash API
* Tested on TI CC3200 LaunchPad
*
* Written by Eric Brundick for the Energia project
* Copyright (C) 2014 Eric Brundick <spirilis at linux dot com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <SLFS.h>
SLFS SerFlash;
SLFS::SLFS(void)
{
filehandle = 0;
filesize = 0;
offset = 0;
retval = SL_FS_OK;
is_write = false;
_readBytesInstance = NULL;
}
void SLFS::begin(void)
{
WiFi.init();
}
void SLFS::end(void)
{
}
int32_t SLFS::open(const uint8_t *filename, int32_t mode)
{
SlFsFileInfo_t finfo;
if (filehandle) {
retval = SLFS_LIB_ERR_FILE_ALREADY_OPEN;
return retval;
}
retval = sl_FsOpen((unsigned char*)filename, mode, NULL, &filehandle);
if (retval != SL_FS_OK)
return retval;
offset = 0;
filesize = 0;
if (mode == FS_MODE_OPEN_READ) {
is_write = false;
// Discover actual filesize
retval = sl_FsGetInfo((unsigned char*)filename, 0, &finfo);
if (retval != SL_FS_OK) {
sl_FsClose(filehandle, NULL, NULL, 0);
filehandle = 0;
return retval;
}
filesize = finfo.FileLen;
} else {
is_write = true;
// Discover maximum file size, store in 'filesize' so we know when to reject writes.
retval = sl_FsGetInfo((unsigned char*)filename, 0, &finfo);
if (retval != SL_FS_OK) {
sl_FsClose(filehandle, NULL, NULL, 0);
filehandle = 0;
return retval;
}
filesize = finfo.AllocatedLen;
}
return retval;
}
int32_t SLFS::open(const char *filename, int32_t mode)
{
return open((const uint8_t *)filename, mode);
}
int32_t SLFS::open(String filename, int32_t mode)
{
const char *cfn = filename.c_str();
return open((const uint8_t *)cfn, mode);
}
int32_t SLFS::close(void)
{
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return retval;
}
offset = 0;
filesize = 0;
retval = sl_FsClose(filehandle, NULL, NULL, 0);
filehandle = 0;
is_write = false;
return retval;
}
int32_t SLFS::seek(int32_t pos)
{
retval = SL_FS_OK;
if (pos >= 0 && pos <= filesize) {
offset = pos;
return SL_FS_OK;
}
retval = SLFS_LIB_ERR_OFFSET_OUT_OF_BOUNDS;
return retval;
}
size_t SLFS::size(void)
{
return (size_t)filesize;
}
int32_t SLFS::lastError(void)
{
return retval;
}
const char * SLFS::lastErrorString(void)
{
return getErrorString(retval);
}
int SLFS::available(void)
{
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return false;
}
if (is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE;
return false; // Makes no sense when open in "write" mode
}
if (offset < filesize)
return true;
return false;
}
int SLFS::peek(void)
{
uint8_t buf[4];
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return (int)retval;
}
if (is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE;
return (int)retval;
}
if (offset == filesize)
return -1;
retval = sl_FsRead(filehandle, offset, buf, 1);
if (retval != 1) {
return -1;
}
return (int)buf[0];
}
int SLFS::read(void)
{
uint8_t buf[4];
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return (int)retval;
}
if (is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE;
return (int)retval;
}
if (offset == filesize)
return -1;
retval = sl_FsRead(filehandle, offset, buf, 1);
if (retval != 1) {
return -1;
}
offset++;
return (int)buf[0];
}
size_t SLFS::readBytes(void *buffer, size_t len)
{
unsigned char *cbuf = (unsigned char *)buffer;
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return 0;
}
if (is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE;
return 0;
}
if (offset == filesize)
return 0;
retval = sl_FsRead(filehandle, offset, cbuf, len);
if (retval < 0)
return 0;
offset += retval;
return retval;
}
String SLFS::readBytes(size_t maxlen)
{
char *sh = NULL;
size_t len;
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return String("");
}
if (is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE;
return String("");
}
if (offset == filesize)
return String("");
len = filesize-offset;
if (len > maxlen)
len = maxlen;
// Free up some memory before allocating our next buffer
if (_readBytesInstance != NULL) {
delete _readBytesInstance; // Execute String's destructor, freeing the buffer in the process
_readBytesInstance = NULL;
}
// Allocate suitable buffer space to hold the file contents
sh = (char *) malloc(len+1);
sh[len] = '\0';
retval = sl_FsRead(filehandle, offset, (uint8_t *)sh, len);
if (retval < 0) {
free(sh);
return String("");
}
offset += retval;
// Allocate a new String instance to hold the contents (which is strcpy'd by String's constructor)
_readBytesInstance = new String(sh);
free(sh); // Creating a new String performs a strcpy, so 'sh' is no longer needed.
return *_readBytesInstance; // Caller will usually assign this to another String object, triggering yet another strcpy.
}
void SLFS::freeString(void)
{
if (_readBytesInstance != NULL)
delete _readBytesInstance; // Execute String's destructor, freeing the buffer in the process
_readBytesInstance = NULL;
}
void SLFS::flush(void)
{
return;
}
size_t SLFS::write(uint8_t c)
{
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return 0;
}
if (!is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_READ;
return 0;
}
if (offset > filesize)
return 0;
retval = sl_FsWrite(filehandle, offset, &c, 1);
if (retval < 1) {
return 0;
}
offset++;
return 1;
}
size_t SLFS::write(const uint8_t *buffer, size_t len)
{
if (!filehandle) {
retval = SLFS_LIB_ERR_FILE_NOT_OPEN;
return 0;
}
if (!is_write) {
retval = SLFS_LIB_ERR_FILE_OPEN_FOR_READ;
return 0;
}
if (offset > filesize)
return 0;
retval = sl_FsWrite(filehandle, offset, (unsigned char *)buffer, len);
if (retval < 0) {
return 0;
}
offset += retval;
return retval;
}
size_t SLFS::write(const void *a, size_t b)
{
return write((const uint8_t *)a, b);
}
size_t SLFS::write(String s)
{
return write((const uint8_t *)s.c_str(), s.length());
}
SLFS::operator bool()
{
if (filehandle)
return true;
return false;
}
int32_t SLFS::del(const uint8_t *filename)
{
if (filehandle) {
retval = SLFS_LIB_ERR_FILE_ALREADY_OPEN;
return retval; // In case the file we have open is the one the user is trying to delete...
}
retval = sl_FsDel((unsigned char*)filename, 0);
if (retval != SL_FS_OK)
return retval;
return retval;
}
int32_t SLFS::del(const char *filename)
{
return del((const uint8_t *)filename);
}
int32_t SLFS::del(String filename)
{
const char *cfn = filename.c_str();
return del((const uint8_t *)cfn);
}
/* SimpleLink API error codes with string representations */
typedef struct {
const char *name;
const int32_t id;
} SLerrorCode;
const SLerrorCode simplelink_errorcode_fs[] = {
{"SL_FS_OK", 0},
{"SL_FS_ERR_EMPTY_SFLASH", -67},
{"SL_FS_ERR_FILE_IS_NOT_SECURE_AND_SIGN", -66},
{"SL_FS_ERASING_FLASH", -65},
{"SL_FS_FILE_HAS_NOT_BEEN_CLOSE_CORRECTLY", -64},
{"SL_FS_WRONG_SIGNATURE", -63},
{"SL_FS_WRONG_SIGNATURE_OR_CERTIFIC_NAME_LENGTH", -62},
{"SL_FS_NOT_16_ALIGNED", -61},
{"SL_FS_CERT_CHAIN_ERROR", -60},
{"SL_FS_FILE_NAME_EXIST", -59},
{"SL_FS_SECURITY_BUF_ALREADY_ALLOC", -58},
{"SL_FS_SECURE_FILE_MUST_BE_COMMIT", -57},
{"SL_FS_ERR_INCORRECT_OFFSET_ALIGNMENT", -56},
{"SL_FS_ERR_FAILED_READ_NVMEM_HEADER", -55},
{"SL_FS_WRONG_FILE_NAME", -54},
{"SL_FS_FILE_SYSTEM_IS_LOCKED", -53},
{"SL_FS_SECURITY_ALLERT", -52},
{"SL_FS_FILE_UNVALID_FILE_SIZE", -51},
{"SL_FS_ERR_TOKEN_IS_NOT_VALID", -50},
{"SL_FS_NO_DEVICE_IS_LOADED", -49},
{"SL_FS_DATA_ADDRESS_SHOUD_BE_IN_DATA_RAM", -48},
{"SL_FS_DATA_IS_NOT_ALIGNED", -47},
{"SL_FS_ERR_OVERLAP_DETECTION_THRESHHOLD", -46},
{"SL_FS_FILE_HAS_RESERVED_NV_INDEX", -45},
{"SL_FS_ERR_MAX_FS_FILES_IS_LARGER", -44},
{"SL_FS_ERR_MAX_FS_FILES_IS_SMALLER", -43},
{"SL_FS_FILE_MAX_SIZE_EXCEEDED", -42},
{"SL_FS_INVALID_BUFFER_FOR_READ", -41},
{"SL_FS_INVALID_BUFFER_FOR_WRITE", -40},
{"SL_FS_ERR_FILE_IMAGE_IS_CORRUPTED", -39},
{"SL_FS_ERR_SIZE_OF_FILE_EXT_EXCEEDED", -38},
{"SL_FS_WARNING_FILE_NAME_NOT_KEPT", -37},
{"SL_FS_ERR_DEVICE_IS_NOT_FORMATTED", -36},
{"SL_FS_ERR_FAILED_WRITE_NVMEM_HEADER", -35},
{"SL_FS_ERR_NO_AVAILABLE_NV_INDEX", -34},
{"SL_FS_ERR_FAILED_TO_ALLOCATE_MEM", -33},
{"SL_FS_ERR_FAILED_TO_READ_INTEGRITY_HEADER_2", -32},
{"SL_FS_ERR_FAILED_TO_READ_INTEGRITY_HEADER_1", -31},
{"SL_FS_ERR_NO_AVAILABLE_BLOCKS", -30},
{"SL_FS_ERR_FILE_MAX_SIZE_BIGGER_THAN_EXISTING_FILE", -29},
{"SL_FS_ERR_FILE_EXISTS_ON_DIFFERENT_DEVICE_ID", -28},
{"SL_FS_ERR_INVALID_ACCESS_TYPE", -27},
{"SL_FS_ERR_FILE_ALREADY_EXISTS", -26},
{"SL_FS_ERR_PROGRAM", -25},
{"SL_FS_ERR_NO_ENTRIES_AVAILABLE", -24},
{"SL_FS_ERR_FILE_ACCESS_IS_DIFFERENT", -23},
{"SL_FS_ERR_BAD_FILE_MODE", -22},
{"SL_FS_ERR_FAILED_READ_NVFILE", -21},
{"SL_FS_ERR_FAILED_INIT_STORAGE", -20},
{"SL_FS_ERR_CONTINUE_WRITE_MUST_BE_MOD_4", -19},
{"SL_FS_ERR_FAILED_LOAD_FILE", -18},
{"SL_FS_ERR_INVALID_HANDLE", -17},
{"SL_FS_ERR_FAILED_TO_WRITE", -16},
{"SL_FS_ERR_OFFSET_OUT_OF_RANGE", -15},
{"SL_FS_ERR_ALLOC", -14},
{"SL_FS_ERR_READ_DATA_LENGTH", -13},
{"SL_FS_ERR_INVALID_FILE_ID", -12},
{"SL_FS_ERR_FILE_NOT_EXISTS", -11},
{"SL_FS_ERR_EMPTY_ERROR", -10},
{"SL_FS_ERR_INVALID_ARGS", -9},
{"SL_FS_ERR_FAILED_TO_CREATE_FILE", -8},
{"SL_FS_ERR_FS_ALREADY_LOADED", -7},
{"SL_FS_ERR_UNKNOWN", -6},
{"SL_FS_ERR_FAILED_TO_CREATE_LOCK_OBJ", -5},
{"SL_FS_ERR_DEVICE_NOT_LOADED", -4},
{"SL_FS_ERR_INVALID_MAGIC_NUM", -3},
{"SL_FS_ERR_FAILED_TO_READ", -2},
{"SL_FS_ERR_NOT_SUPPORTED", -1},
{"SLFS_LIB_ERR_FILE_NOT_OPEN", SLFS_LIB_ERR_FILE_NOT_OPEN},
{"SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE", SLFS_LIB_ERR_FILE_OPEN_FOR_WRITE},
{"SLFS_LIB_ERR_FILE_OPEN_FOR_READ", SLFS_LIB_ERR_FILE_OPEN_FOR_READ},
{"SLFS_LIB_ERR_FILE_ALREADY_OPEN", SLFS_LIB_ERR_FILE_ALREADY_OPEN},
{NULL, 0}
};
const char * SLFS::getErrorString(const int32_t code)
{
SLerrorCode *cptr = NULL;
int i=0;
cptr = (SLerrorCode *)&simplelink_errorcode_fs[i];
while (cptr->name != NULL && cptr->id != code) {
i++;
cptr = (SLerrorCode *)&simplelink_errorcode_fs[i];
}
if (cptr->name == NULL)
return "ERR_UNKNOWN";
return cptr->name;
}
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