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Allow use of absolute paths on SLFS
If the path starts with /, do not drop it. There are no directories on SLFS, but use of /pretend/paths/to/files.txt is common. What we do drop is the ./ prefix (added by mongoose when document_root=.) PUBLISHED_FROM=5108bc078dfaf8f8afa4db554b4769d9d7b8a103
This commit is contained in:
Deomid Ryabkov
Cesanta Bot
parent
8fb5e8ef19
commit
2180e1786c
82
mongoose.c
82
mongoose.c
@ -11737,7 +11737,6 @@ 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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if (pathname[0] == '/') pathname++;
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int rw = (flags & 3);
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if (rw == O_RDONLY) {
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SlFsFileInfo_t sl_fi;
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@ -11861,10 +11860,6 @@ int fs_slfs_unlink(const char *filename) {
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return set_errno(sl_fs_to_errno(sl_FsDel((const _u8 *) filename, 0)));
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}
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int fs_slfs_rename(const char *from, const char *to) {
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return set_errno(ENOTSUP);
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}
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void fs_slfs_set_new_file_size(const char *name, size_t size) {
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int i;
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for (i = 0; i < MAX_OPEN_SLFS_FILES; i++) {
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@ -11890,6 +11885,7 @@ void fs_slfs_set_new_file_size(const char *name, size_t size) {
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(defined(MG_FS_SLFS) || defined(MG_FS_SPIFFS))
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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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#include <stdlib.h>
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#include <string.h>
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@ -11930,17 +11926,20 @@ int set_errno(int e) {
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return (e == 0 ? 0 : -1);
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}
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static int is_sl_fname(const char *fname) {
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return strncmp(fname, "SL:", 3) == 0;
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}
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static const char *sl_fname(const char *fname) {
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return fname + 3;
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}
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static const char *drop_dir(const char *fname) {
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if (*fname == '.') fname++;
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if (*fname == '/') fname++;
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static const char *drop_dir(const char *fname, bool *is_slfs) {
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*is_slfs = (strncmp(fname, "SL:", 3) == 0);
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if (*is_slfs) fname += 3;
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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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@ -11975,31 +11974,30 @@ int open(const char *pathname, unsigned flags, int mode) {
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int _open(const char *pathname, int flags, mode_t mode) {
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#endif
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int fd = -1;
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pathname = drop_dir(pathname);
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if (is_sl_fname(pathname)) {
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bool is_sl;
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const char *fname = drop_dir(pathname, &is_sl);
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if (is_sl) {
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#ifdef MG_FS_SLFS
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fd = fs_slfs_open(sl_fname(pathname), flags, mode);
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fd = fs_slfs_open(fname, flags, mode);
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if (fd >= 0) fd += SLFS_FD_BASE;
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#endif
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} else {
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#ifdef CC3200_FS_SPIFFS
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fd = fs_spiffs_open(pathname, flags, mode);
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fd = fs_spiffs_open(fname, flags, mode);
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if (fd >= 0) fd += SPIFFS_FD_BASE;
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#endif
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}
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DBG(("open(%s, 0x%x) = %d", pathname, flags, fd));
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DBG(("open(%s, 0x%x) = %d, fname = %s", pathname, flags, fd, fname));
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return fd;
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}
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int _stat(const char *pathname, struct stat *st) {
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int res = -1;
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const char *fname = pathname;
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int is_sl = is_sl_fname(pathname);
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if (is_sl) fname = sl_fname(pathname);
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fname = drop_dir(fname);
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bool is_sl;
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const char *fname = drop_dir(pathname, &is_sl);
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memset(st, 0, sizeof(*st));
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/* Simulate statting the root directory. */
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if (strcmp(fname, "") == 0) {
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if (fname[0] == '\0' || strcmp(fname, ".") == 0) {
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st->st_ino = 0;
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st->st_mode = S_IFDIR | 0777;
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st->st_nlink = 1;
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@ -12182,14 +12180,13 @@ ssize_t _write(int fd, const void *buf, size_t count) {
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* implementation using _link and _unlink doesn't work for us.
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*/
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#if MG_TI_NO_HOST_INTERFACE || defined(_NEWLIB_VERSION)
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int rename(const char *from, const char *to) {
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int rename(const char *frompath, const char *topath) {
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int r = -1;
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from = drop_dir(from);
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to = drop_dir(to);
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if (is_sl_fname(from) || is_sl_fname(to)) {
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#ifdef MG_FS_SLFS
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r = fs_slfs_rename(sl_fname(from), sl_fname(to));
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#endif
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bool is_sl_from, is_sl_to;
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const char *from = drop_dir(frompath, &is_sl_from);
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const char *to = drop_dir(topath, &is_sl_to);
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if (is_sl_from || is_sl_to) {
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set_errno(ENOTSUP);
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} else {
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#ifdef CC3200_FS_SPIFFS
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r = fs_spiffs_rename(from, to);
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@ -12201,29 +12198,32 @@ int rename(const char *from, const char *to) {
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#endif /* MG_TI_NO_HOST_INTERFACE || defined(_NEWLIB_VERSION) */
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#if MG_TI_NO_HOST_INTERFACE
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int unlink(const char *filename) {
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int unlink(const char *pathname) {
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#else
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int _unlink(const char *filename) {
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int _unlink(const char *pathname) {
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#endif
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int r = -1;
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filename = drop_dir(filename);
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if (is_sl_fname(filename)) {
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bool is_sl;
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const char *fname = drop_dir(pathname, &is_sl);
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if (is_sl) {
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#ifdef MG_FS_SLFS
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r = fs_slfs_unlink(sl_fname(filename));
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r = fs_slfs_unlink(fname);
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#endif
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} else {
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#ifdef CC3200_FS_SPIFFS
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r = fs_spiffs_unlink(filename);
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r = fs_spiffs_unlink(fname);
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#endif
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}
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DBG(("unlink(%s) = %d", filename, r));
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DBG(("unlink(%s) = %d, fname = %s", pathname, r, fname));
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return r;
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}
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#ifdef CC3200_FS_SPIFFS /* FailFS does not support listing files. */
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DIR *opendir(const char *dir_name) {
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DIR *r = NULL;
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if (is_sl_fname(dir_name)) {
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bool is_sl;
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drop_dir(dir_name, &is_sl);
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if (is_sl) {
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r = NULL;
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set_errno(ENOTSUP);
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} else {
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