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mOS filesystem refactoring: introduce VFS
With different filesystem implementations and storage drivers, like grown-ups have :) This is not currently used to add any new functionality, we still have only one FS and driver on ESP8266 and ESP32; CC3200 has two: SPIFFS and SLFS. This will be used soon to implement filesystems on additional SPI flash chips and SD cards. PUBLISHED_FROM=293960fef82952c505e9b1925aac7724c7308362
This commit is contained in:
Deomid Ryabkov
Cesanta Bot
parent
cd48bcfd7d
commit
27094896b1
86
mongoose.c
86
mongoose.c
@ -12593,8 +12593,8 @@ void fs_slfs_set_new_file_size(const char *name, size_t size);
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/* Amalgamated: #include "common/mg_mem.h" */
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/* From sl_fs.c */
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extern int set_errno(int e);
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static const char *drop_dir(const char *fname, bool *is_slfs);
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int set_errno(int e);
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const char *drop_dir(const char *fname, bool *is_slfs);
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/*
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* With SLFS, you have to pre-declare max file size. Yes. Really.
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@ -12657,6 +12657,7 @@ int fs_slfs_open(const char *pathname, int flags, mode_t mode) {
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_u32 am = 0;
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fi->size = (size_t) -1;
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int rw = (flags & 3);
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size_t new_size = FS_SLFS_MAX_FILE_SIZE;
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if (rw == O_RDONLY) {
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SlFsFileInfo_t sl_fi;
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_i32 r = sl_FsGetInfo((const _u8 *) pathname, 0, &sl_fi);
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@ -12671,25 +12672,24 @@ int fs_slfs_open(const char *pathname, int flags, mode_t mode) {
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return set_errno(ENOTSUP);
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}
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if (flags & O_CREAT) {
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size_t i, size = FS_SLFS_MAX_FILE_SIZE;
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size_t i;
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for (i = 0; i < MAX_OPEN_SLFS_FILES; i++) {
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if (s_sl_file_size_hints[i].name != NULL &&
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strcmp(s_sl_file_size_hints[i].name, pathname) == 0) {
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size = s_sl_file_size_hints[i].size;
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new_size = s_sl_file_size_hints[i].size;
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MG_FREE(s_sl_file_size_hints[i].name);
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s_sl_file_size_hints[i].name = NULL;
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break;
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}
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}
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DBG(("creating %s with max size %d", pathname, (int) size));
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am = FS_MODE_OPEN_CREATE(size, 0);
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am = FS_MODE_OPEN_CREATE(new_size, 0);
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} else {
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am = FS_MODE_OPEN_WRITE;
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}
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}
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_i32 r = sl_FsOpen((_u8 *) pathname, am, NULL, &fi->fh);
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DBG(("sl_FsOpen(%s, 0x%x) = %d, %d", pathname, (int) am, (int) r,
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(int) fi->fh));
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LOG(LL_DEBUG, ("sl_FsOpen(%s, 0x%x) sz %u = %d, %d", pathname, (int) am,
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(unsigned int) new_size, (int) r, (int) fi->fh));
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if (r == SL_FS_OK) {
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fi->pos = 0;
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r = fd;
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@ -12704,7 +12704,7 @@ int fs_slfs_close(int fd) {
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struct sl_fd_info *fi = &s_sl_fds[fd];
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if (fi->fh <= 0) return set_errno(EBADF);
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_i32 r = sl_FsClose(fi->fh, NULL, NULL, 0);
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DBG(("sl_FsClose(%d) = %d", (int) fi->fh, (int) r));
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LOG(LL_DEBUG, ("sl_FsClose(%d) = %d", (int) fi->fh, (int) r));
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s_sl_fds[fd].fh = -1;
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return set_errno(sl_fs_to_errno(r));
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}
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@ -12817,6 +12817,32 @@ void fs_slfs_set_new_file_size(const char *name, size_t size) {
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#if MG_NET_IF == MG_NET_IF_SIMPLELINK && \
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(defined(MG_FS_SLFS) || defined(MG_FS_SPIFFS))
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int set_errno(int e) {
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errno = e;
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return (e == 0 ? 0 : -1);
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}
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const char *drop_dir(const char *fname, bool *is_slfs) {
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if (is_slfs != NULL) {
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*is_slfs = (strncmp(fname, "SL:", 3) == 0);
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if (*is_slfs) fname += 3;
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}
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/* Drop "./", if any */
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if (fname[0] == '.' && fname[1] == '/') {
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fname += 2;
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}
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/*
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* Drop / if it is the only one in the path.
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* This allows use of /pretend/directories but serves /file.txt as normal.
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*/
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if (fname[0] == '/' && strchr(fname + 1, '/') == NULL) {
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fname++;
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}
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return fname;
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}
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#if !defined(MG_FS_NO_VFS)
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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@ -12854,30 +12880,6 @@ void fs_slfs_set_new_file_size(const char *name, size_t size) {
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#endif /* CS_PLATFORM == CS_P_CC3200 */
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#endif /* !MG_UART_CHAR_PUT */
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int set_errno(int e) {
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errno = e;
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return (e == 0 ? 0 : -1);
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}
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static const char *drop_dir(const char *fname, bool *is_slfs) {
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if (is_slfs != NULL) {
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*is_slfs = (strncmp(fname, "SL:", 3) == 0);
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if (*is_slfs) fname += 3;
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}
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/* Drop "./", if any */
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if (fname[0] == '.' && fname[1] == '/') {
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fname += 2;
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}
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/*
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* Drop / if it is the only one in the path.
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* This allows use of /pretend/directories but serves /file.txt as normal.
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*/
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if (fname[0] == '/' && strchr(fname + 1, '/') == NULL) {
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fname++;
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}
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return fname;
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}
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enum fd_type {
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FD_INVALID,
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FD_SYS,
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@ -13215,6 +13217,7 @@ int sl_fs_init(void) {
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return ret;
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}
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#endif /* !defined(MG_FS_NO_VFS) */
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#endif /* MG_NET_IF == MG_NET_IF_SIMPLELINK && (defined(MG_FS_SLFS) || \
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defined(MG_FS_SPIFFS)) */
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#ifdef MG_MODULE_LINES
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@ -13833,6 +13836,13 @@ const struct mg_iface_vtable mg_default_iface_vtable = MG_SL_IFACE_VTABLE;
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/* Amalgamated: #include "common/mg_mem.h" */
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#ifndef MG_SSL_IF_SIMPLELINK_SLFS_PREFIX
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#define MG_SSL_IF_SIMPLELINK_SLFS_PREFIX "SL:"
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#endif
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#define MG_SSL_IF_SIMPLELINK_SLFS_PREFIX_LEN \
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(sizeof(MG_SSL_IF_SIMPLELINK_SLFS_PREFIX) - 1)
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struct mg_ssl_if_ctx {
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char *ssl_cert;
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char *ssl_key;
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@ -13897,7 +13907,8 @@ bool pem_to_der(const char *pem_file, const char *der_file) {
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pf = fopen(pem_file, "r");
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if (pf == NULL) goto clean;
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remove(der_file);
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fs_slfs_set_new_file_size(der_file + 3, 2048);
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fs_slfs_set_new_file_size(der_file + MG_SSL_IF_SIMPLELINK_SLFS_PREFIX_LEN,
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2048);
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df = fopen(der_file, "w");
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if (df == NULL) goto clean;
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while (1) {
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@ -13939,8 +13950,8 @@ static char *sl_pem2der(const char *pem_file) {
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}
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char *der_file = NULL;
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/* DER file must be located on SLFS, add prefix. */
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int l = mg_asprintf(&der_file, 0, "SL:%.*s.der", (int) (pem_ext - pem_file),
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pem_file);
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int l = mg_asprintf(&der_file, 0, MG_SSL_IF_SIMPLELINK_SLFS_PREFIX "%.*s.der",
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(int) (pem_ext - pem_file), pem_file);
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if (der_file == NULL) return NULL;
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bool result = false;
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cs_stat_t st;
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@ -13953,7 +13964,8 @@ static char *sl_pem2der(const char *pem_file) {
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}
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if (result) {
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/* Strip the SL: prefix we added since NWP does not expect it. */
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memmove(der_file, der_file + 3, l - 2 /* including \0 */);
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memmove(der_file, der_file + MG_SSL_IF_SIMPLELINK_SLFS_PREFIX_LEN,
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l - 2 /* including \0 */);
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} else {
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MG_FREE(der_file);
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der_file = NULL;
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@ -538,7 +538,9 @@ typedef struct stat cs_stat_t;
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#define SIZE_T_FMT "u"
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typedef struct stat cs_stat_t;
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#define DIRSEP '/'
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#if !defined(MGOS_VFS_DEFINE_DIRENT)
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#define CS_DEFINE_DIRENT
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#endif
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#define to64(x) strtoll(x, NULL, 10)
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#define INT64_FMT PRId64
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@ -700,7 +702,7 @@ struct stat {
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};
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int _stat(const char *pathname, struct stat *st);
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#define stat(a, b) _stat(a, b)
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int stat(const char *pathname, struct stat *st);
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#define __S_IFMT 0170000
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