/
fs.c
1741 lines (1343 loc) · 41.3 KB
/
fs.c
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/**
* @file fs.c
*
* @section License
* Copyright (C) 2014-2016, Erik Moqvist
*
* 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.
*
* This file is part of the Simba project.
*/
#include "simba.h"
#include <ctype.h>
#define FS_COMMAND_ARGS_MAX 16
#define FS_COMMAND_MAX 64
#define FS_NAME_MAX 64
struct module_t {
int initialized;
struct fs_command_t *commands_p;
struct fs_filesystem_t *filesystems_p;
struct fs_counter_t *counters_p;
struct fs_parameter_t *parameters_p;
#if CONFIG_FS_CMD_FS_FILESYSTEMS_LIST == 1
struct fs_command_t cmd_filesystems_list;
#endif
#if CONFIG_FS_CMD_FS_READ == 1
struct fs_command_t cmd_read;
#endif
#if CONFIG_FS_CMD_FS_WRITE == 1
struct fs_command_t cmd_write;
#endif
#if CONFIG_FS_CMD_FS_APPEND == 1
struct fs_command_t cmd_append;
#endif
#if CONFIG_FS_CMD_FS_LIST == 1
struct fs_command_t cmd_list;
#endif
#if CONFIG_FS_CMD_FS_FORMAT == 1
struct fs_command_t cmd_format;
#endif
#if CONFIG_FS_CMD_FS_COUNTERS_LIST == 1
struct fs_command_t cmd_counters_list;
#endif
#if CONFIG_FS_CMD_FS_COUNTERS_RESET == 1
struct fs_command_t cmd_counters_reset;
#endif
#if CONFIG_FS_CMD_FS_PARAMETERS_LIST == 1
struct fs_command_t cmd_parameters_list;
#endif
};
static struct module_t module;
static char empty_path[] = "";
static int counter_get(struct fs_counter_t *counter_p,
void *chout_p)
{
std_fprintf(chout_p,
FSTR("%08lx%08lx\r\n"),
(long)(counter_p->value >> 32),
(long)(counter_p->value & 0xffffffff));
return (0);
}
static int counter_set(struct fs_counter_t *counter_p)
{
counter_p->value = 0;
return (0);
}
static int cmd_parameter_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
int res = -1;
struct fs_parameter_t *parameter_p;
parameter_p = arg_p;
if (argc > 1) {
res = parameter_p->set_cb(parameter_p->value_p, argv[1]);
} else {
res = parameter_p->print_cb(chout_p, parameter_p->value_p);
std_fprintf(chout_p, FSTR("\r\n"));
}
return (res);
}
#if CONFIG_FS_CMD_FS_FILESYSTEMS_LIST == 1
static int cmd_filesystems_list_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_filesystem_t *filesystem_p;
char buf[FS_NAME_MAX];
char *type_p;
std_fprintf(chout_p,
FSTR("MOUNT-POINT MEDIUM TYPE AVAILABLE SIZE USAGE\r\n"));
filesystem_p = module.filesystems_p;
while (filesystem_p != NULL) {
strcpy(buf, filesystem_p->name_p);
switch (filesystem_p->type) {
case fs_type_fat16_t: type_p = "fat16"; break;
case fs_type_spiffs_t: type_p = "spiffs"; break;
default: type_p = "-"; break;
}
std_fprintf(chout_p,
FSTR("%-29s %-7s %-7s %9s %4s %5s\r\n"),
buf,
"-",
type_p,
"-",
"-",
"-%");
filesystem_p = filesystem_p->next_p;
}
return (0);
}
#endif
#if CONFIG_FS_CMD_FS_READ == 1
static int cmd_read_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_file_t file;
ssize_t size;
char buf[32];
if (argc != 2) {
std_fprintf(chout_p, FSTR("Usage: %s <file>\r\n"), argv[0]);
return (-1);
}
if (fs_open(&file, argv[1], FS_READ) != 0) {
std_fprintf(chout_p, FSTR("Failed to open %s.\r\n"), argv[1]);
return (-1);
}
while ((size = fs_read(&file, buf, sizeof(buf))) > 0) {
chan_write(chout_p, buf, size);
}
std_fprintf(chout_p, FSTR("\r\n"));
fs_close(&file);
return (0);
}
#endif
#if CONFIG_FS_CMD_FS_WRITE == 1
static int cmd_write_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_file_t file;
size_t size;
if (argc != 3) {
std_fprintf(chout_p, FSTR("Usage: %s <file> <data>\r\n"), argv[0]);
return (-1);
}
if (fs_open(&file, argv[1], FS_CREAT | FS_TRUNC | FS_RDWR) != 0) {
std_fprintf(chout_p, FSTR("Failed to open %s.\r\n"), argv[1]);
return (-1);
}
size = strlen(argv[2]);
if (fs_write(&file, argv[2], size) != size) {
std_fprintf(chout_p, FSTR("Failed to write %s to the file.\r\n"), argv[2]);
return (-1);
}
fs_close(&file);
return (0);
}
#endif
#if CONFIG_FS_CMD_FS_APPEND == 1
static int cmd_append_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_file_t file;
size_t size;
if (argc != 3) {
std_fprintf(chout_p, FSTR("Usage: %s <file> <data>\r\n"), argv[0]);
return (-1);
}
if (fs_open(&file, argv[1], FS_RDWR | FS_APPEND) != 0) {
std_fprintf(chout_p, FSTR("Failed to open %s.\r\n"), argv[1]);
return (-1);
}
size = strlen(argv[2]);
if (fs_write(&file, argv[2], size) != size) {
std_fprintf(chout_p, FSTR("Failed to append %s to the file.\r\n"), argv[2]);
return (-1);
}
fs_close(&file);
return (0);
}
#endif
#if CONFIG_FS_CMD_FS_LIST == 1
static int cmd_list_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
if (argc != 2) {
std_fprintf(chout_p, FSTR("Usage: %s <path>\r\n"), argv[0]);
return (-1);
}
return (fs_ls(argv[1], NULL, chout_p));
}
#endif
#if CONFIG_FS_CMD_FS_FORMAT == 1
static int cmd_format_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
if (argc != 2) {
std_fprintf(chout_p, FSTR("Usage: %s <path>\r\n"), argv[0]);
return (-1);
}
return (fs_format(argv[1]));
}
#endif
#if CONFIG_FS_CMD_FS_COUNTERS_LIST == 1
static int cmd_counters_list_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_counter_t *counter_p;
char buf[FS_NAME_MAX];
std_fprintf(chout_p,
FSTR("NAME VALUE\r\n"));
counter_p = module.counters_p;
while (counter_p != NULL) {
std_strcpy(buf, counter_p->command.path_p);
std_fprintf(chout_p, FSTR("%-53s"), buf);
counter_p->command.callback(1,
NULL,
chout_p,
NULL,
counter_p->command.arg_p,
arg_p);
counter_p = counter_p->next_p;
}
return (0);
}
#endif
#if CONFIG_FS_CMD_FS_COUNTERS_RESET == 1
static int cmd_counters_reset_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_counter_t *counter_p;
counter_p = module.counters_p;
while (counter_p != NULL) {
counter_p->command.callback(0,
NULL,
chout_p,
NULL,
counter_p->command.arg_p,
arg_p);
counter_p = counter_p->next_p;
}
return (0);
}
#endif
#if CONFIG_FS_CMD_FS_PARAMETERS_LIST == 1
static int cmd_parameters_list_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
struct fs_parameter_t *parameter_p;
char buf[FS_NAME_MAX];
std_fprintf(chout_p,
FSTR("NAME VALUE\r\n"));
parameter_p = module.parameters_p;
while (parameter_p != NULL) {
std_strcpy(buf, parameter_p->command.path_p);
std_fprintf(chout_p, FSTR("%-53s"), buf);
parameter_p->command.callback(1,
NULL,
chout_p,
NULL,
parameter_p->command.arg_p,
call_arg_p);
parameter_p = parameter_p->next_p;
}
return (0);
}
#endif
/**
* Parse one argument from given string. An argument must be in quotes
* if it contains spaces.
*/
static char *argument_parse(char *command_p, const char **begin_pp)
{
int in_quote;
in_quote = 0;
*begin_pp = command_p;
while (*command_p != '\0') {
if (*command_p == '\\') {
if (command_p[1] == '\"') {
/* Remove the \. */
memmove(command_p, &command_p[1], strlen(&command_p[1]) + 1);
}
} else {
if (in_quote == 1) {
if (*command_p == '\"') {
/* Remove the ". */
memmove(command_p, &command_p[1], strlen(&command_p[1]) + 1);
in_quote = 0;
command_p--;
}
} else {
if (*command_p == '\"') {
/* Remove the ". */
memmove(command_p, &command_p[1], strlen(&command_p[1]) + 1);
in_quote = 1;
command_p--;
} else if (*command_p == ' ') {
*command_p = '\0';
command_p++;
break;
}
}
}
command_p++;
}
if (in_quote == 0) {
return (command_p);
} else {
return (NULL);
}
}
/**
* Split given command into argv strings.
*/
static int command_parse(char *command_p, const char *argv[])
{
int argc;
/* Remove white spaces at the beginning and end of the string. */
command_p = std_strip(command_p, NULL);
argc = 0;
/* Command string missing. */
if (strlen(command_p) == 0) {
return (-1);
}
while (*command_p != '\0') {
/* Too many arguemnts? */
if (argc == FS_COMMAND_ARGS_MAX) {
return (-E2BIG);
}
/* Remove white spaces before the next argument. */
command_p = std_strip(command_p, NULL);
if ((command_p = argument_parse(command_p, &argv[argc++])) == NULL) {
return (-1);
}
}
return (argc);
}
static int cmd_counter_cb(int argc,
const char *argv[],
void *chout_p,
void *chin_p,
void *arg_p,
void *call_arg_p)
{
if (argc == 1) {
return (counter_get(arg_p, chout_p));
} else {
return (counter_set(arg_p));
}
}
int fs_module_init()
{
/* Return immediately if the module is already initialized. */
if (module.initialized == 1) {
return (0);
}
module.initialized = 1;
module.commands_p = NULL;
module.filesystems_p = NULL;
module.counters_p = NULL;
module.parameters_p = NULL;
#if CONFIG_FS_CMD_FS_FILESYSTEMS_LIST == 1
fs_command_init(&module.cmd_filesystems_list,
FSTR("/filesystems/fs/filesystems/list"),
cmd_filesystems_list_cb,
NULL);
fs_command_register(&module.cmd_filesystems_list);
#endif
#if CONFIG_FS_CMD_FS_READ == 1
fs_command_init(&module.cmd_read,
FSTR("/filesystems/fs/read"),
cmd_read_cb,
NULL);
fs_command_register(&module.cmd_read);
#endif
#if CONFIG_FS_CMD_FS_WRITE == 1
fs_command_init(&module.cmd_write,
FSTR("/filesystems/fs/write"),
cmd_write_cb,
NULL);
fs_command_register(&module.cmd_write);
#endif
#if CONFIG_FS_CMD_FS_APPEND == 1
fs_command_init(&module.cmd_append,
FSTR("/filesystems/fs/append"),
cmd_append_cb,
NULL);
fs_command_register(&module.cmd_append);
#endif
#if CONFIG_FS_CMD_FS_LIST == 1
fs_command_init(&module.cmd_list,
FSTR("/filesystems/fs/list"),
cmd_list_cb,
NULL);
fs_command_register(&module.cmd_list);
#endif
#if CONFIG_FS_CMD_FS_FORMAT == 1
fs_command_init(&module.cmd_format,
FSTR("/filesystems/fs/format"),
cmd_format_cb,
NULL);
fs_command_register(&module.cmd_format);
#endif
#if CONFIG_FS_CMD_FS_COUNTERS_LIST == 1
fs_command_init(&module.cmd_counters_list,
FSTR("/filesystems/fs/counters/list"),
cmd_counters_list_cb,
NULL);
fs_command_register(&module.cmd_counters_list);
#endif
#if CONFIG_FS_CMD_FS_COUNTERS_RESET == 1
fs_command_init(&module.cmd_counters_reset,
FSTR("/filesystems/fs/counters/reset"),
cmd_counters_reset_cb,
NULL);
fs_command_register(&module.cmd_counters_reset);
#endif
#if CONFIG_FS_CMD_FS_PARAMETERS_LIST == 1
fs_command_init(&module.cmd_parameters_list,
FSTR("/filesystems/fs/parameters/list"),
cmd_parameters_list_cb,
NULL);
fs_command_register(&module.cmd_parameters_list);
#endif
return (0);
}
int fs_call(char *command_p,
void *chin_p,
void *chout_p,
void *arg_p)
{
ASSERTN(command_p != NULL, -EINVAL);
int argc, skip_slash;
const char *argv[FS_COMMAND_ARGS_MAX];
struct fs_command_t *current_p;
argc = command_parse(command_p, argv);
if (argc <= 0) {
return (argc);
}
/* Find given command. */
current_p = module.commands_p;
skip_slash = (argv[0][0] != '/');
while (current_p != NULL) {
if (std_strcmp(argv[0], ¤t_p->path_p[skip_slash]) == 0) {
return (current_p->callback(argc,
argv,
chout_p,
chin_p,
current_p->arg_p,
arg_p));
}
current_p = current_p->next_p;
}
std_fprintf(chout_p, FSTR("%s: command not found\r\n"), argv[0]);
return (-ENOENT);
}
/**
* Find the file system for given path.
*/
static int get_filesystem_path_from_path(struct fs_filesystem_t **filesystem_pp,
const char **path_pp,
const char *path_p)
{
struct fs_filesystem_t *filesystem_p;
const char *name_p;
int name_length;
/* Skip leading slash. */
if (path_p[0] == '/') {
path_p++;
}
filesystem_p = module.filesystems_p;
/* Find the file system registered on given path. */
while (filesystem_p != NULL) {
name_p = filesystem_p->name_p;
/* Skip leading slash. */
if (name_p[0] == '/') {
name_p++;
}
name_length = strlen(name_p);
if (strncmp(name_p, path_p, name_length) == 0) {
if (path_p[name_length] != '\0') {
*path_pp = (path_p + name_length + 1);
} else {
*path_pp = "";
}
*filesystem_pp = filesystem_p;
return (0);
}
filesystem_p = filesystem_p->next_p;
}
return (-1);
}
static int format_entry_fat16(void *chout_p,
const struct fat16_dir_entry_t *entry_p)
{
/* Print modify date/time if requested */
std_fprintf(chout_p,
FSTR("%04u-%02u-%02u %02u:%02u "),
entry_p->latest_mod_date.year,
entry_p->latest_mod_date.month,
entry_p->latest_mod_date.day,
entry_p->latest_mod_date.hour,
entry_p->latest_mod_date.minute);
/* Print size if requested */
std_fprintf(chout_p, FSTR("%8lu "), (unsigned long)entry_p->size);
/* Print file name with possible blank fill */
std_fprintf(chout_p, FSTR("%s"), entry_p->name);
if (entry_p->is_dir == 1) {
chan_write(chout_p, "/", 1);
}
std_fprintf(chout_p, FSTR("\r\n"));
return (0);
}
/**
* List all files in given fat16 directory.
*/
static int ls_fat16(struct fat16_t *fs_p,
const char *path_p,
void *chout_p)
{
struct fat16_dir_t dir;
struct fat16_dir_entry_t entry;
/* Re-open the directory with read option set. */
if (fat16_dir_open(fs_p, &dir, path_p, O_READ) != 0) {
std_fprintf(chout_p, FSTR("%s: directory not found\r\n"), path_p);
return (-1);
}
while (fat16_dir_read(&dir, &entry) == 1) {
format_entry_fat16(chout_p, &entry);
}
fat16_dir_close(&dir);
return (0);
}
#if CONFIG_SPIFFS == 1
static int format_entry_spiffs(void *chout_p,
const struct spiffs_dirent_t *entry_p)
{
/* Print file name with possible blank fill */
std_fprintf(chout_p,
FSTR("xxxx-xx-xx xx-xx %8lu %s\r\n"),
(unsigned long)entry_p->size,
entry_p->name);
return (0);
}
/**
* List all files in given spiffs directory.
*/
static int ls_spiffs(struct spiffs_t *fs_p,
const char *path_p,
void *chout_p)
{
struct spiffs_dir_t dir;
struct spiffs_dirent_t entry;
/* Open the directory. */
if (spiffs_opendir(fs_p, path_p, &dir) == NULL) {
std_fprintf(chout_p, FSTR("%s: directory not found\r\n"), path_p);
return (-1);
}
while (spiffs_readdir(&dir, &entry) != NULL) {
format_entry_spiffs(chout_p, &entry);
}
spiffs_closedir(&dir);
return (0);
}
#endif
/**
* Create an absolute path of given path by prepending the CWD
* environment variable.
*/
static int create_absolute_path(char *dst_p,
const char *path_p)
{
int size;
const char *cwd_p;
const char *slash_p;
cwd_p = "";
slash_p = "";
/* Prepend CWD if given path is relative. */
if (path_p[0] != '/') {
cwd_p = thrd_get_env("CWD");
if ((cwd_p == NULL) || (cwd_p[0] == '\0')) {
cwd_p = "/";
}
if (cwd_p[strlen(cwd_p) - 1] != '/') {
slash_p = "/";
}
}
size = std_snprintf(dst_p,
CONFIG_FS_PATH_MAX,
FSTR("%s%s%s"),
cwd_p,
slash_p,
path_p);
return (size < CONFIG_FS_PATH_MAX ? 0 : -1);
}
int fs_open(struct fs_file_t *self_p, const char *path_p, int flags)
{
ASSERTN(self_p != NULL, -EINVAL);
ASSERTN(path_p != NULL, -EINVAL);
struct fs_filesystem_t *filesystem_p;
char path[CONFIG_FS_PATH_MAX];
if (create_absolute_path(path, path_p) != 0) {
return (-1);
}
if (get_filesystem_path_from_path(&filesystem_p, &path_p, &path[0]) != 0) {
return (-1);
}
self_p->filesystem_p = filesystem_p;
switch (filesystem_p->type) {
case fs_type_fat16_t:
return (fat16_file_open(filesystem_p->fs.fat16_p,
&self_p->u.fat16,
path_p,
flags));
#if CONFIG_SPIFFS == 1
case fs_type_spiffs_t:
self_p->u.spiffs = spiffs_open(filesystem_p->fs.spiffs_p,
path_p,
flags,
0);
return (self_p->u.spiffs > 0 ? 0 : -1);
#endif
default:
return (-1);
}
}
int fs_close(struct fs_file_t *self_p)
{
ASSERTN(self_p != NULL, -EINVAL);
switch (self_p->filesystem_p->type) {
case fs_type_fat16_t:
return (fat16_file_close(&self_p->u.fat16));
#if CONFIG_SPIFFS == 1
case fs_type_spiffs_t:
return (spiffs_close(self_p->filesystem_p->fs.spiffs_p,
self_p->u.spiffs));
#endif
default:
return (-1);
}
}
ssize_t fs_read(struct fs_file_t *self_p, void *dst_p, size_t size)
{
ASSERTN(self_p != NULL, -EINVAL);
ASSERTN(dst_p != NULL, -EINVAL);
ssize_t res;
switch (self_p->filesystem_p->type) {
case fs_type_fat16_t:
res = fat16_file_read(&self_p->u.fat16, dst_p, size);
return (res);
#if CONFIG_SPIFFS == 1
case fs_type_spiffs_t:
res = spiffs_read(self_p->filesystem_p->fs.spiffs_p,
self_p->u.spiffs,
dst_p,
size);
if (res == SPIFFS_ERR_END_OF_OBJECT) {
return (0);
} else {
return (res);
}
#endif
default:
return (-1);
}
}
ssize_t fs_read_line(struct fs_file_t *self_p, void *dst_p, size_t size)
{
ASSERTN(self_p != NULL, -EINVAL);
ASSERTN(dst_p != NULL, -EINVAL);
ssize_t i;
char *d_p;
d_p = dst_p;
i = 0;
/* Read one byte at a time until a newline is found, the
destination buffer is full, or end of file is reached. */
while (i < size) {
if (fs_read(self_p, &d_p[i], 1) != 1) {
d_p[i] = '\0';
return (i > 0 ? i : -1);
}
if (d_p[i] == '\n') {
d_p[i] = '\0';
return (i);
}
i++;
}
return (i == size ? size : -1);
}
ssize_t fs_write(struct fs_file_t *self_p, const void *src_p, size_t size)
{
ASSERTN(self_p != NULL, -EINVAL);
ASSERTN(src_p != NULL, -EINVAL);
switch (self_p->filesystem_p->type) {
case fs_type_fat16_t:
return (fat16_file_write(&self_p->u.fat16, src_p, size));
#if CONFIG_SPIFFS == 1
case fs_type_spiffs_t:
return (spiffs_write(self_p->filesystem_p->fs.spiffs_p,
self_p->u.spiffs,
(void *)src_p,
size));
#endif
default:
return (-1);
}
}
int fs_seek(struct fs_file_t *self_p, int offset, int whence)
{
ASSERTN(self_p != NULL, -EINVAL);
switch (self_p->filesystem_p->type) {
case fs_type_fat16_t:
return (fat16_file_seek(&self_p->u.fat16, offset, whence));
#if CONFIG_SPIFFS == 1
case fs_type_spiffs_t:
if (spiffs_lseek(self_p->filesystem_p->fs.spiffs_p,
self_p->u.spiffs,
offset,
whence) >= 0) {
return (0);
} else {
return (-1);
}
#endif
default:
return (-1);
}
}
ssize_t fs_tell(struct fs_file_t *self_p)
{
ASSERTN(self_p != NULL, -EINVAL);
switch (self_p->filesystem_p->type) {
case fs_type_fat16_t: