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c6aa574279
$700 controls whether they are scanned for internally in the main program (1) or always located externally (0). If scanned for internally the program is run twice, initially in check mode to locate the subroutines before it is rewound and run in normal mode. If stored externally the file P<macro number>.macro is run, <macro number> is the M98 P value.
743 lines
16 KiB
C
743 lines
16 KiB
C
/*
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vfs.c - An embedded CNC Controller with rs274/ngc (g-code) support
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Virtual File System handler
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Part of grblHAL
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Copyright (c) 2022-2026 Terje Io
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grblHAL is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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grblHAL is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with grblHAL. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include "hal.h"
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#include "vfs.h"
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#ifndef VFS_CWD_LENGTH
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#define VFS_CWD_LENGTH 100
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#endif
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#ifdef ARDUINO_SAM_DUE
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#undef feof
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#endif
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static vfs_mount_t *get_rootfs (void);
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static inline vfs_mount_t *path_is_mount_dir (const char *path)
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{
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size_t plen = strlen(path);
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vfs_mount_t *mount = get_rootfs();
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if(*path == '/' && plen == 1)
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return mount;
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size_t mlen;
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if((mount = mount->next)) do {
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mlen = strlen(mount->path) - 1;
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if(mlen == plen && !strncmp(mount->path, path, mlen))
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break;
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} while((mount = mount->next));
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return mount;
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}
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// NULL file system
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static vfs_file_t *fs_open (const char *filename, const char *mode)
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{
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return NULL;
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}
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static void fs_close (vfs_file_t *file)
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{
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}
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static size_t fs_read (void *buffer, size_t size, size_t count, vfs_file_t *file)
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{
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return 0;
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}
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static size_t fs_write (const void *buffer, size_t size, size_t count, vfs_file_t *file)
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{
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return 0;
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}
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static size_t fs_tell (vfs_file_t *file)
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{
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return 0;
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}
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static int fs_seek (vfs_file_t *file, size_t offset)
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{
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return -1;
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}
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static bool fs_eof (vfs_file_t *file)
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{
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return true;
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}
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static int fs_unlink (const char *filename)
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{
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return -1;
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}
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static int fs_dirop (const char *path)
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{
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return -1;
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}
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static vfs_dir_t *fs_opendir (const char *path)
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{
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static vfs_dir_t *dir = NULL;
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if(dir == NULL)
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dir = calloc(sizeof(vfs_dir_t) + 3, 1);
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if(dir) {
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vfs_mount_t **mount = (vfs_mount_t **)&dir->handle;
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*mount = get_rootfs()->next;
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}
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return !strcmp(path, "/") ? dir : NULL;
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}
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static char *fs_readdir (vfs_dir_t *dir, vfs_dirent_t *dirent)
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{
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vfs_mount_t **mount = (vfs_mount_t **)&dir->handle;
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vfs_errno = 0;
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if(*mount) {
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strcpy(dirent->name, (*mount)->path);
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*(strchr(dirent->name, '\0') - 1) = '\0';
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dirent->st_mode = (*mount)->mode;
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dirent->st_mode.directory = true;
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while((*mount = (*mount)->next)) {
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if(!(*mount)->mode.hidden)
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break;
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}
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} else
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*dirent->name = '\0';
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return *dirent->name ? dirent->name : NULL;
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}
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static void fs_closedir (vfs_dir_t *dir)
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{
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}
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static int fs_stat (const char *filename, vfs_stat_t *st)
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{
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char path[64];
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vfs_mount_t *mount;
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if((mount = path_is_mount_dir(strcat(strcpy(path, "/"), filename)))) {
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if(!(mount->vfs->fstat && (vfs_errno = mount->vfs->fstat("/", st) == 0))) {
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vfs_errno = 0;
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st->st_size = 1024;
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st->st_mode = mount->mode;
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st->st_mode.directory = true;
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#if ESP_PLATFORM
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st->st_mtim = mount->st_mtim;
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#else
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st->st_mtime = mount->st_mtime;
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#endif
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}
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} else
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vfs_errno = -1;
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return vfs_errno;
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}
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static int fs_chdir (const char *path)
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{
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return !strcmp(path, "/") ? 0 : -1;
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}
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static char *fs_getcwd (char *buf, size_t size)
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{
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return "/";
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}
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static const vfs_t fs_null = {
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.fopen = fs_open,
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.fclose = fs_close,
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.fread = fs_read,
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.fwrite = fs_write,
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.ftell = fs_tell,
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.fseek = fs_seek,
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.feof = fs_eof,
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.funlink = fs_unlink,
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.fmkdir = fs_dirop,
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.fchdir = fs_chdir,
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.frmdir = fs_dirop,
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.fopendir = fs_opendir,
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.readdir = fs_readdir,
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.fclosedir = fs_closedir,
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.fstat = fs_stat,
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.fgetcwd = fs_getcwd
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};
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// End NULL file system
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static vfs_mount_t root = {
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.path = "/",
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.vfs = &fs_null,
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.mode = { .directory = true, .read_only = true, .hidden = true },
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.next = NULL
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};
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static vfs_mount_t *cwdmount = &root;
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static char cwd[VFS_CWD_LENGTH] = "/";
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volatile int vfs_errno = 0;
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vfs_events_t vfs = {0};
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static vfs_mount_t *get_rootfs (void)
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{
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return &root;
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}
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// Strip trailing directory separator, FatFS dont't like it (WinSCP adds it)
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char *vfs_fixpath (char *path)
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{
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char *s = path + strlen(path) - 1;
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if(s > path && *s == '/' && s != strchr(path, '/'))
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*s = '\0';
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return path;
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}
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static vfs_mount_t *get_mount (const char *path)
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{
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vfs_errno = 0;
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if(*path != '/')
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return cwdmount;
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vfs_mount_t *mount;
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if((mount = path_is_mount_dir(path)) == NULL) {
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mount = root.next;
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if(mount) do {
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if(!strncmp(mount->path, path, strlen(mount->path)))
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break;
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} while((mount = mount->next));
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if(mount == NULL)
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mount = &root;
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}
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return mount;
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}
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static const char *get_filename (vfs_mount_t *mount, const char *filename)
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{
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if(*filename == '/') {
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size_t len = strlen(mount->path);
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return filename + (len == 1 ? 0 : len - 1);
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} else
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return filename;
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}
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vfs_file_t *vfs_open (const char *filename, const char *mode)
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{
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vfs_file_t *file = NULL;
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vfs_mount_t *mount = get_mount(filename);
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if(mount && (file = mount->vfs->fopen(get_filename(mount, filename), mode))) {
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file->fs = mount->vfs;
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file->status.update = !mount->mode.hidden && !!strchr(mode, 'w');
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}
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return file;
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}
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void vfs_close (vfs_file_t *file)
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{
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vfs_errno = 0;
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((vfs_t *)(file->fs))->fclose(file);
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if(file->status.update && vfs.on_fs_changed)
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vfs.on_fs_changed((vfs_t *)file->fs);
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}
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size_t vfs_read (void *buffer, size_t size, size_t count, vfs_file_t *file)
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{
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vfs_errno = 0;
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return ((vfs_t *)(file->fs))->fread(buffer, size, count, file);
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}
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size_t vfs_write (const void *buffer, size_t size, size_t count, vfs_file_t *file)
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{
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vfs_errno = 0;
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return ((vfs_t *)(file->fs))->fwrite(buffer, size, count, file);
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}
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int vfs_puts (const char *s, vfs_file_t *file)
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{
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size_t count = strlen(s), ret;
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vfs_errno = 0;
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if((ret = ((vfs_t *)(file->fs))->fwrite(s, sizeof(char), count, file)) != count)
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return -1;
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return (int)ret;
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}
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size_t vfs_tell (vfs_file_t *file)
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{
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vfs_errno = 0;
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return ((vfs_t *)(file->fs))->ftell(file);
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}
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int vfs_seek (vfs_file_t *file, size_t offset)
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{
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vfs_errno = 0;
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return ((vfs_t *)(file->fs))->fseek(file, offset);
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}
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bool vfs_eof (vfs_file_t *file)
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{
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vfs_errno = 0;
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return ((vfs_t *)(file->fs))->feof(file);
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}
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int vfs_rename (const char *from, const char *to)
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{
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int ret;
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vfs_mount_t *mount_from = get_mount(from), *mount_to = get_mount(to);
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if((ret = mount_from == mount_to ? mount_from->vfs->frename(get_filename(mount_from, from), get_filename(mount_to, to)) : -1) != -1 &&
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vfs.on_fs_changed && !mount_from->mode.hidden) {
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vfs.on_fs_changed(mount_from->vfs);
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if(mount_from != mount_to && !mount_to->mode.hidden)
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vfs.on_fs_changed(mount_to->vfs);
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}
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return ret;
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}
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int vfs_unlink (const char *filename)
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{
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int ret;
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vfs_mount_t *mount = get_mount(filename); // TODO: test for dir?
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if((ret = mount ? mount->vfs->funlink(get_filename(mount, filename)) : -1) != -1 && vfs.on_fs_changed && !mount->mode.hidden)
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vfs.on_fs_changed(mount->vfs);
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return ret;
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}
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int vfs_mkdir (const char *path)
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{
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int ret;
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vfs_mount_t *mount = get_mount(path);
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if((ret = mount ? mount->vfs->fmkdir(get_filename(mount, path)) : -1) != -1 && vfs.on_fs_changed && !mount->mode.hidden)
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vfs.on_fs_changed(mount->vfs);
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return ret;
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}
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int vfs_rmdir (const char *path)
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{
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int ret;
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vfs_mount_t *mount = get_mount(path);
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if((ret = mount ? mount->vfs->frmdir(get_filename(mount, path)) : -1) != -1 && vfs.on_fs_changed && !mount->mode.hidden)
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vfs.on_fs_changed(mount->vfs);
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return ret;
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}
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int vfs_chdir (const char *path)
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{
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int ret;
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char *p;
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vfs_errno = 0;
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if(!strcmp("..", path) && strcmp("/", (path = cwd)) && (p = strrchr(cwd, '/')))
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*(p + (p == cwd ? 1 : 0)) = '\0';
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if(*path != '/' && strcmp(cwd, "/")) {
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if(strcmp(path, "..")) {
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if(strlen(cwd) > 1)
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strcat(cwd, "/");
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strcat(cwd, path);
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} else {
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char *s = strrchr(cwd, '/');
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if(s)
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*s = '\0';
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}
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} else {
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if(*path == '/')
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strcpy(cwd, path);
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else
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strcat(strcpy(cwd, "/"), path);
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vfs_fixpath(cwd);
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if((cwdmount = get_mount(cwd)) && strchr(cwd + 1, '/') == NULL && cwdmount != &root) {
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strcpy(cwd, cwdmount->path);
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vfs_fixpath(cwd);
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return 0;
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}
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}
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if((ret = cwdmount ? cwdmount->vfs->fchdir(path) : -1) != 0) // + strlen(mount->path));))
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vfs_fixpath(cwd);
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return ret;
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}
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vfs_dir_t *vfs_opendir (const char *path)
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{
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vfs_dir_t *dir = NULL;
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vfs_mount_t *mount = get_mount(path), *add_mount;
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vfs_mount_ll_entry_t *ml = NULL, *mln;
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if(mount && (dir = mount->vfs->fopendir(get_filename(mount, path)))) {
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dir->fs = mount->vfs;
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dir->mounts = NULL;
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if((add_mount = root.next)) do {
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if(add_mount != mount && !strncmp(add_mount->path, path, strlen(path))) {
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if(!add_mount->mode.hidden && (mln = malloc(sizeof(vfs_mount_ll_entry_t)))) {
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mln->mount = add_mount;
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mln->next = NULL;
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if(dir->mounts == NULL)
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dir->mounts = ml = mln;
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else {
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ml->next = mln;
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ml = mln;
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}
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}
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}
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} while((add_mount = add_mount->next));
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}
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return dir;
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}
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vfs_dirent_t *vfs_readdir (vfs_dir_t *dir)
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{
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static vfs_dirent_t dirent;
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vfs_errno = 0;
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((vfs_t *)dir->fs)->readdir(dir, &dirent);
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if(*dirent.name == '\0' && dir->mounts) {
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char *s;
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vfs_mount_ll_entry_t *ml = dir->mounts;
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strcpy(dirent.name, ml->mount->path + 1);
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if((s = strrchr(dirent.name, '/')))
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*s = '\0';
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dirent.st_mode = ml->mount->mode;
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dirent.st_mode.directory = true;
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dir->mounts = dir->mounts->next;
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free(ml);
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}
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return *dirent.name == '\0' ? NULL : &dirent;
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}
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void vfs_closedir (vfs_dir_t *dir)
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{
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vfs_errno = 0;
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while(dir->mounts) {
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vfs_mount_ll_entry_t *ml = dir->mounts;
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dir->mounts = dir->mounts->next;
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free(ml);
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}
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((vfs_t *)dir->fs)->fclosedir(dir);
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}
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char *vfs_getcwd (char *buf, size_t len)
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{
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char *cwds = cwdmount->vfs->fgetcwd ? cwdmount->vfs->fgetcwd(NULL, len) : cwd;
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vfs_errno = 0;
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if(buf == NULL)
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buf = (char *)malloc(strlen(cwds) + 1);
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if(buf)
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strcpy(buf, cwds);
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return buf ? buf : cwds;
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}
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int vfs_chmod (const char *filename, vfs_st_mode_t attr, vfs_st_mode_t mask)
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{
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vfs_mount_t *mount = get_mount(filename);
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return mount && mount->vfs->fchmod ? mount->vfs->fchmod(get_filename(mount, filename), attr, mask) : -1;
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}
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int vfs_stat (const char *filename, vfs_stat_t *st)
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{
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char tmp[VFS_CWD_LENGTH], *p;
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if(!strcmp("..", filename)) {
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strcpy(tmp, cwd);
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if((p = strrchr(tmp, '/')))
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*(p + (p == tmp ? 1 : 0)) = '\0';
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filename = tmp;
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}
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vfs_mount_t *mount = get_mount(filename);
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int ret = mount ? mount->vfs->fstat(get_filename(mount, filename), st) : -1;
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if(ret == -1 && (!strcmp("/", filename) || (strchr(filename, '/') == NULL && !strcmp("/", cwd)))) {
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strcat(cwd, filename);
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mount = get_mount(cwd);
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cwd[1] = '\0';
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if(mount) {
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st->st_size = 0;
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st->st_mode.mode = 0;
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st->st_mode.directory = true;
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#if defined(ESP_PLATFORM)
|
|
st->st_mtim = mount->st_mtim;
|
|
#else
|
|
st->st_mtime = mount->st_mtime;
|
|
#endif
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int vfs_utime (const char *filename, struct tm *modified)
|
|
{
|
|
vfs_mount_t *mount = get_mount(filename);
|
|
|
|
return mount && mount->vfs->futime ? mount->vfs->futime(get_filename(mount, filename), modified) : -1;
|
|
}
|
|
|
|
vfs_free_t *vfs_fgetfree (const char *path)
|
|
{
|
|
static vfs_free_t free;
|
|
|
|
vfs_mount_t *mount = get_mount(path);
|
|
|
|
if(mount && mount->vfs->fgetfree && mount->vfs->fgetfree(&free))
|
|
return &free;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static bool vfs_get_time (struct tm *time)
|
|
{
|
|
memset(time, 0, sizeof(struct tm));
|
|
|
|
// 2025-01-01:00:00:00
|
|
time->tm_year = 2025 - 1900;
|
|
time->tm_mday = 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool vfs_mount (const char *path, const vfs_t *fs, vfs_st_mode_t mode)
|
|
{
|
|
vfs_mount_t *mount;
|
|
|
|
if(!strcmp(path, "/")) {
|
|
root.vfs = fs;
|
|
root.mode = mode;
|
|
} else if((mount = (vfs_mount_t *)calloc(sizeof(vfs_mount_t), 1))) {
|
|
|
|
struct tm tm;
|
|
|
|
strcpy(mount->path, path);
|
|
if(mount->path[strlen(path) - 1] != '/')
|
|
strcat(mount->path, "/");
|
|
|
|
mount->vfs = fs;
|
|
mount->mode = mode;
|
|
mount->next = NULL;
|
|
if(hal.rtc.get_datetime && hal.rtc.get_datetime(&tm)) {
|
|
#ifdef ESP_PLATFORM
|
|
mount->st_mtim = mktime(&tm);
|
|
#else
|
|
mount->st_mtime = mktime(&tm);
|
|
#endif
|
|
}
|
|
|
|
vfs_mount_t *lmount = &root;
|
|
|
|
while(lmount->next)
|
|
lmount = lmount->next;
|
|
|
|
lmount->next = mount;
|
|
}
|
|
|
|
if(hal.rtc.get_datetime == NULL)
|
|
hal.rtc.get_datetime = vfs_get_time;
|
|
|
|
if(fs && vfs.on_mount)
|
|
vfs.on_mount(path, fs, mode);
|
|
|
|
return fs != NULL;
|
|
}
|
|
|
|
bool vfs_unmount (const char *path)
|
|
{
|
|
// TODO: close open files?
|
|
|
|
if(!strcmp(path, "/")) {
|
|
root.vfs = &fs_null;
|
|
root.mode = (vfs_st_mode_t){ .directory = true, .read_only = true, .hidden = true };
|
|
} else {
|
|
|
|
vfs_mount_t *mount = get_mount(path);
|
|
if(mount) {
|
|
|
|
vfs_mount_t *pmount = &root;
|
|
|
|
while(pmount->next && pmount->next != mount)
|
|
pmount = pmount->next;
|
|
|
|
if(pmount->next == mount)
|
|
pmount->next = mount->next;
|
|
|
|
free(mount);
|
|
}
|
|
}
|
|
|
|
if(vfs.on_unmount)
|
|
vfs.on_unmount(path);
|
|
|
|
return true;
|
|
}
|
|
|
|
vfs_drive_t *vfs_get_drive (const char *path)
|
|
{
|
|
static vfs_drive_t drive;
|
|
|
|
vfs_mount_t *mount = get_mount(path);
|
|
drive.name = mount->vfs->fs_name;
|
|
drive.path = (const char *)mount->path;
|
|
drive.mode = mount->mode;
|
|
drive.removable = mount->vfs->removable;
|
|
drive.fs = mount->vfs;
|
|
|
|
return &drive;
|
|
}
|
|
|
|
vfs_drives_t *vfs_drives_open (void)
|
|
{
|
|
vfs_drives_t *handle;
|
|
vfs_mount_t *mount = &root;
|
|
|
|
if((handle = malloc(sizeof(vfs_drives_t)))) {
|
|
|
|
handle->mount = NULL;
|
|
do {
|
|
if(mount->mode.hidden)
|
|
mount = mount->next;
|
|
else
|
|
handle->mount = mount;
|
|
} while(mount && handle->mount == NULL);
|
|
|
|
if(handle->mount == NULL) {
|
|
free(handle);
|
|
handle = NULL;
|
|
}
|
|
}
|
|
|
|
return handle;
|
|
}
|
|
|
|
vfs_drive_t *vfs_drives_read (vfs_drives_t *handle, bool add_hidden)
|
|
{
|
|
static vfs_drive_t drive;
|
|
|
|
bool ok;
|
|
|
|
if((ok = handle->mount != NULL)) {
|
|
|
|
drive.name = handle->mount->vfs->fs_name;
|
|
drive.path = (const char *)handle->mount->path;
|
|
drive.mode = handle->mount->mode;
|
|
drive.removable = handle->mount->vfs->removable;
|
|
drive.fs = handle->mount->vfs;
|
|
|
|
handle->mount = handle->mount->next;
|
|
|
|
if(handle->mount) do {
|
|
if((!handle->mount->mode.hidden || add_hidden) && handle->mount->vfs->fs_name)
|
|
break;
|
|
} while((handle->mount = handle->mount->next));
|
|
}
|
|
|
|
return ok ? &drive : NULL;
|
|
}
|
|
|
|
void vfs_drives_close (vfs_drives_t *handle)
|
|
{
|
|
free(handle);
|
|
}
|
|
|
|
vfs_free_t *vfs_drive_getfree (vfs_drive_t *drive)
|
|
{
|
|
static vfs_free_t free;
|
|
|
|
const vfs_t *fs = drive->fs;
|
|
|
|
return fs->fgetfree && fs->fgetfree(&free) ? &free : NULL;
|
|
}
|
|
|
|
int vfs_drive_format (vfs_drive_t *drive)
|
|
{
|
|
const vfs_t *fs = drive->fs;
|
|
|
|
return (vfs_errno = fs->format ? fs->format() : -1);
|
|
}
|