mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-11 10:32:33 +00:00
[stage2] Add fatfs devoptab wrapper, change ffconf accordingly
This commit is contained in:
TuxSH
parent
8eb8de0e94
commit
0fca6c2296
3 changed files with 564 additions and 6 deletions
543
fusee/fusee-secondary/src/fs_dev.c
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543
fusee/fusee-secondary/src/fs_dev.c
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@ -0,0 +1,543 @@
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#include <errno.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <fcntl.h>
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#include <sys/iosupport.h>
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#include <sys/param.h>
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#include <unistd.h>
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#include "lib/fatfs/ff.h"
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#include "fs_dev.h"
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/* Quite a bit of code comes from https://github.com/switchbrew/libnx/blob/master/nx/source/runtime/devices/fs_dev.c */
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static int fsdev_convert_rc(struct _reent *r, FRESULT rc);
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static void fsdev_filinfo_to_st(struct stat *st, const FILINFO *info);
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static int fsdev_open(struct _reent *r, void *fileStruct, const char *path, int flags, int mode);
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static int fsdev_close(struct _reent *r, void *fd);
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static ssize_t fsdev_write(struct _reent *r, void *fd, const char *ptr, size_t len);
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static ssize_t fsdev_read(struct _reent *r, void *fd, char *ptr, size_t len);
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static off_t fsdev_seek(struct _reent *r, void *fd, off_t pos, int dir);
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static int fsdev_fstat(struct _reent *r, void *fd, struct stat *st);
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static int fsdev_stat(struct _reent *r, const char *file, struct stat *st);
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static int fsdev_link(struct _reent *r, const char *existing, const char *newLink);
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static int fsdev_unlink(struct _reent *r, const char *name);
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static int fsdev_chdir(struct _reent *r, const char *name);
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static int fsdev_rename(struct _reent *r, const char *oldName, const char *newName);
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static int fsdev_mkdir(struct _reent *r, const char *path, int mode);
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static DIR_ITER* fsdev_diropen(struct _reent *r, DIR_ITER *dirState, const char *path);
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static int fsdev_dirreset(struct _reent *r, DIR_ITER *dirState);
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static int fsdev_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat);
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static int fsdev_dirclose(struct _reent *r, DIR_ITER *dirState);
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static int fsdev_statvfs(struct _reent *r, const char *path, struct statvfs *buf);
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static int fsdev_ftruncate(struct _reent *r, void *fd, off_t len);
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static int fsdev_fsync(struct _reent *r, void *fd);
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static int fsdev_chmod(struct _reent *r, const char *path, mode_t mode);
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static int fsdev_fchmod(struct _reent *r, void *fd, mode_t mode);
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static int fsdev_rmdir(struct _reent *r, const char *name);
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static devoptab_t g_fsdev_devoptab = {
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.structSize = sizeof(FIL),
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.open_r = fsdev_open,
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.close_r = fsdev_close,
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.write_r = fsdev_write,
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.read_r = fsdev_read,
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.seek_r = fsdev_seek,
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.fstat_r = fsdev_fstat,
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.stat_r = fsdev_stat,
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.link_r = fsdev_link,
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.unlink_r = fsdev_unlink,
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.chdir_r = fsdev_chdir,
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.rename_r = fsdev_rename,
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.mkdir_r = fsdev_mkdir,
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.dirStateSize = sizeof(DIR),
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.diropen_r = fsdev_diropen,
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.dirreset_r = fsdev_dirreset,
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.dirnext_r = fsdev_dirnext,
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.dirclose_r = fsdev_dirclose,
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.statvfs_r = fsdev_statvfs,
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.ftruncate_r = fsdev_ftruncate,
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.fsync_r = fsdev_fsync,
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.deviceData = NULL,
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.chmod_r = fsdev_chmod,
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.fchmod_r = fsdev_fchmod,
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.rmdir_r = fsdev_rmdir,
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};
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typedef struct fsdev_fsdevice_t {
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char name[32+1];
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bool setup;
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devoptab_t devoptab;
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FATFS fatfs;
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} fsdev_fsdevice_t;
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static fsdev_fsdevice_t g_devices[10] = { 0 };
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/* Restrictions: 10 drives max, and **update FF_VOLUME_STRS accordingly** */
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int fsdev_mount_device(const char *name) {
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if (name[0] == '\0' || strlen(name) > 32) {
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errno = ENAMETOOLONG;
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return -1;
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}
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if (FindDevice(name) != -1) {
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errno = EEXIST; /* Device already exists */
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return -1;
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}
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/* Find a free slot and use it */
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for (size_t i = 0; i < 10; i++) {
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if (!g_devices[i].setup) {
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fsdev_fsdevice_t *device = &g_devices[i];
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FRESULT rc;
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char drname[40];
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strcpy(drname, name);
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strcat(drname, ":");
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rc = f_mount(&device->fatfs, drname, 1);
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if (rc != FR_OK) {
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return fsdev_convert_rc(NULL, rc);
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}
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strcpy(device->name, name);
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memcpy(&device->devoptab, &g_fsdev_devoptab, sizeof(devoptab_t));
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device->devoptab.name = device->name;
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device->devoptab.deviceData = device;
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if (AddDevice(&device->devoptab) == -1) {
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errno = ENOMEM;
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return -1;
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} else {
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device->setup = true;
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return 0;
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}
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}
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}
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errno = ENOMEM;
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return -1;
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}
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int fsdev_set_default_device(const char *name) {
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#if FF_VOLUMES < 2
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return 0;
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#else
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int ret;
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char drname[40];
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int devid = FindDevice(name);
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if (devid == -1) {
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errno = ENOENT;
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return -1;
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}
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strcpy(drname, name);
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strcat(drname, ":");
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ret = fsdev_convert_rc(NULL, f_chdrive(drname));
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if (ret == 0) {
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setDefaultDevice(devid);
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}
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return ret;
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#endif
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}
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int fsdev_unmount_device(const char *name) {
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int ret;
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char drname[40];
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int devid = FindDevice(name);
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if (devid == -1) {
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errno = ENOENT;
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return -1;
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}
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strcpy(drname, name);
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strcat(drname, ":");
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ret = fsdev_convert_rc(NULL, f_unmount(drname));
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if (ret == 0) {
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fsdev_fsdevice_t *device = (fsdev_fsdevice_t *)(GetDeviceOpTab(name)->deviceData);
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RemoveDevice(name);
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memset(device, 0, sizeof(fsdev_fsdevice_t));
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}
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return ret;
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}
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int fsdev_mount_all(void) {
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static const char* const volid[] = { FF_VOLUME_STRS };
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for (size_t i = 0; i < sizeof(volid)/sizeof(volid[0]); i++) {
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int ret = fsdev_mount_device(volid[i]);
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if (ret != 0) {
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return ret;
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}
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}
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return 0;
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}
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int fsdev_unmount_all(void) {
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static const char* const volid[] = { FF_VOLUME_STRS };
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for (size_t i = 0; i < sizeof(volid)/sizeof(volid[0]); i++) {
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int ret = fsdev_unmount_device(volid[i]);
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if (ret != 0) {
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return ret;
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}
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}
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return 0;
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}
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/* Adapted from https://github.com/benemorius/openOBC-devboard/blob/bf0a4a33e22d24e7c299f921d185da27377310e0/lib/fatfs/FatFS.cpp#L173 */
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static int fsdev_convert_rc(struct _reent *r, FRESULT rc) {
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int errornumber;
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switch(rc) {
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case FR_OK: /* (0) Succeeded */
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errornumber = 0;
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break;
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case FR_DISK_ERR: /* (1) A hard error occurred in the low level disk I/O layer */
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errornumber = EIO;
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break;
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case FR_INT_ERR: /* (2) Assertion failed */
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errornumber = EINVAL;
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break;
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case FR_NOT_READY: /* (3) The physical drive cannot work */
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errornumber = EIO;
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break;
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case FR_NO_FILE: /* (4) Could not find the file */
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errornumber = ENOENT;
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break;
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case FR_NO_PATH: /* (5) Could not find the path */
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errornumber = ENOENT;
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break;
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case FR_INVALID_NAME: /* (6) The path name format is invalid */
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errornumber = EINVAL;
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break;
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case FR_DENIED: /* (7) Access denied due to prohibited access or directory full */
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errornumber = EACCES;
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break;
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case FR_EXIST: /* (8) Access denied due to prohibited access */
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errornumber = EEXIST;
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break;
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case FR_INVALID_OBJECT: /* (9) The file/directory object is invalid */
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errornumber = EFAULT;
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break;
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case FR_WRITE_PROTECTED: /* (10) The physical drive is write protected */
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errornumber = EROFS;
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break;
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case FR_INVALID_DRIVE: /* (11) The logical drive number is invalid */
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errornumber = ENODEV;
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break;
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case FR_NOT_ENABLED: /* (12) The volume has no work area */
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errornumber = ENOEXEC;
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break;
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case FR_NO_FILESYSTEM: /* (13) There is no valid FAT volume */
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errornumber = ENFILE;
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break;
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case FR_MKFS_ABORTED: /* (14) The f_mkfs() aborted due to any parameter error */
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errornumber = ENOEXEC;
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break;
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case FR_TIMEOUT: /* (15) Could not get a grant to access the volume within defined period */
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errornumber = EAGAIN;
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break;
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case FR_LOCKED: /* (16) The operation is rejected according to the file sharing policy */
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errornumber = EBUSY;
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break;
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case FR_NOT_ENOUGH_CORE: /* (17) LFN working buffer could not be allocated */
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errornumber = ENOMEM;
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break;
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case FR_TOO_MANY_OPEN_FILES: /* (18) Number of open files > _FS_SHARE */
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errornumber = EMFILE;
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break;
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case FR_INVALID_PARAMETER: /* (19) Given parameter is invalid */
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errornumber = EINVAL;
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break;
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default:
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errornumber = EPERM;
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break;
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}
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if (r != NULL) {
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r->_errno = errornumber;
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} else {
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errno = errornumber;
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}
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return errornumber == 0 ? 0 : -1;
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}
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static void fsdev_filinfo_to_st(struct stat *st, const FILINFO *info) {
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/* Date of last modification */
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struct tm date;
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memset(st, 0, sizeof(struct stat));
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date.tm_mday = info->fdate & 31;
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date.tm_mon = ((info->fdate >> 5) & 15) - 1;
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date.tm_year = ((info->fdate >> 9) & 127) - 1980 + 1900;
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date.tm_sec = (info->ftime << 1) & 63;
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date.tm_min = (info->ftime >> 5) & 63;
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date.tm_hour = (info->ftime >> 11) & 31;
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st->st_atime = st->st_mtime = st->st_ctime = mktime(&date);
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st->st_size = (off_t)info->fsize;
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st->st_nlink = 1;
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if (info->fattrib & AM_DIR) {
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st->st_mode = S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO;
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} else {
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st->st_mode = S_IFREG | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
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}
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}
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static int fsdev_open(struct _reent *r, void *fileStruct, const char *path, int flags, int mode) {
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(void)mode;
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FIL *f = (FIL *)fileStruct;
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BYTE ff_flags = 0;
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static const struct {
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int posix_flag;
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BYTE ff_flag;
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} flag_mappings[] = {
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{ O_APPEND, FA_OPEN_APPEND },
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{ O_CREAT , FA_OPEN_ALWAYS },
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{ O_EXCL , FA_CREATE_NEW },
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{ O_TRUNC , FA_CREATE_ALWAYS },
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{ O_RDONLY, FA_READ },
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{ O_WRONLY, FA_WRITE },
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{ O_RDWR , FA_READ | FA_WRITE },
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};
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if ((flags & O_RDONLY & O_WRONLY) || ((flags & O_RDWR) & (O_RDONLY | O_WRONLY))) {
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r->_errno = EINVAL;
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return -1;
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}
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if (flags & O_RDONLY & O_APPEND) {
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r->_errno = EINVAL;
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return -1;
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}
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for (size_t i = 0; i < sizeof(flag_mappings)/sizeof(flag_mappings[0]); i++) {
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if (flags & flag_mappings[i].posix_flag) {
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ff_flags |= flag_mappings[i].ff_flag;
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}
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}
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/* Normalize O_CREAT|O_TRUNC */
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if ((ff_flags & (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS)) == (FA_CREATE_ALWAYS | FA_OPEN_ALWAYS)) {
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ff_flags &= ~FA_OPEN_ALWAYS;
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}
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return fsdev_convert_rc(r, f_open(f, path, ff_flags));
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}
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static int fsdev_close(struct _reent *r, void *fd) {
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FIL *f = (FIL *)fd;
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return fsdev_convert_rc(r, f_close(f));
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}
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static ssize_t fsdev_write(struct _reent *r, void *fd, const char *ptr, size_t len) {
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FIL *f = (FIL *)fd;
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UINT wr;
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int ret = fsdev_convert_rc(r, f_write(f, ptr, (UINT)len, &wr));
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return ret == -1 ? -1 : (ssize_t)wr;
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}
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static ssize_t fsdev_read(struct _reent *r, void *fd, char *ptr, size_t len) {
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FIL *f = (FIL *)fd;
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UINT rd;
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int ret = fsdev_convert_rc(r, f_read(f, ptr, (UINT)len, &rd));
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return ret == -1 ? -1 : (ssize_t)rd;
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}
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static off_t fsdev_seek(struct _reent *r, void *fd, off_t pos, int whence) {
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FIL *f = (FIL *)f;
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FSIZE_t off;
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int ret;
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switch (whence) {
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case SEEK_SET:
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off = 0;
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break;
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case SEEK_CUR:
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off = f_tell(f);
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break;
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case SEEK_END:
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off = f_size(f);
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break;
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default:
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r->_errno = EINVAL;
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return -1;
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}
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if(pos < 0 && off < -pos) {
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/* don't allow seek to before the beginning of the file */
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r->_errno = EINVAL;
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return -1;
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}
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ret = fsdev_convert_rc(r, f_lseek(f, off + (FSIZE_t)pos));
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return ret == -1 ? -1 : (off_t)(off + (FSIZE_t)pos);
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}
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static int fsdev_fstat(struct _reent *r, void *fd, struct stat *st) {
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(void)fd;
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(void)st;
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r->_errno = ENOSYS;
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return -1;
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}
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static int fsdev_stat(struct _reent *r, const char *file, struct stat *st) {
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FILINFO info;
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FRESULT rc = f_stat(file, &info);
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if (rc == FR_OK) {
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fsdev_filinfo_to_st(st, &info);
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return 0;
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}
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return fsdev_convert_rc(r, rc);
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}
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static int fsdev_link(struct _reent *r, const char *existing, const char *newLink) {
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(void)existing;
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(void)newLink;
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r->_errno = ENOSYS;
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return -1;
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}
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static int fsdev_unlink(struct _reent *r, const char *name) {
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return fsdev_convert_rc(r, f_unlink(name));
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}
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static int fsdev_chdir(struct _reent *r, const char *name) {
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return fsdev_convert_rc(r, f_chdir(name));
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}
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static int fsdev_rename(struct _reent *r, const char *oldName, const char *newName) {
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return fsdev_convert_rc(r, f_rename(oldName, newName));
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}
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static int fsdev_mkdir(struct _reent *r, const char *path, int mode) {
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(void)mode;
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return fsdev_convert_rc(r, f_mkdir(path));
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}
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static DIR_ITER* fsdev_diropen(struct _reent *r, DIR_ITER *dirState, const char *path) {
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DIR *d = (DIR *)(dirState->dirStruct);
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return fsdev_convert_rc(r, f_opendir(d, path)) == -1 ? NULL : dirState;
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}
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||||
static int fsdev_dirreset(struct _reent *r, DIR_ITER *dirState) {
|
||||
(void)dirState;
|
||||
r->_errno = ENOSYS;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int fsdev_dirnext(struct _reent *r, DIR_ITER *dirState, char *filename, struct stat *filestat) {
|
||||
FILINFO info;
|
||||
DIR *d = (DIR *)(dirState->dirStruct);
|
||||
FRESULT rc = f_readdir(d, &info);
|
||||
|
||||
if (rc == FR_OK) {
|
||||
fsdev_filinfo_to_st(filestat, &info);
|
||||
|
||||
if(info.fname[0] == '\0') {
|
||||
/* End of directory */
|
||||
r->_errno = ENOENT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
strcpy(filename, info.fname);
|
||||
return 0;
|
||||
} else {
|
||||
return fsdev_convert_rc(r, rc);
|
||||
}
|
||||
}
|
||||
|
||||
static int fsdev_dirclose(struct _reent *r, DIR_ITER *dirState) {
|
||||
DIR *d = (DIR *)(dirState->dirStruct);
|
||||
return fsdev_convert_rc(r, f_closedir(d));
|
||||
}
|
||||
|
||||
static int fsdev_statvfs(struct _reent *r, const char *path, struct statvfs *buf) {
|
||||
(void)path;
|
||||
|
||||
DWORD nclust;
|
||||
FATFS *fatfs;
|
||||
FRESULT rc;
|
||||
|
||||
rc = f_getfree(path, &nclust, &fatfs);
|
||||
|
||||
if (rc == FR_OK) {
|
||||
#if FF_MAX_SS != FF_MIN_SS
|
||||
buf->f_bsize = fatfs->ssize;
|
||||
#else
|
||||
buf->f_bsize = FF_MAX_SS;
|
||||
#endif
|
||||
buf->f_frsize = buf->f_bsize;
|
||||
buf->f_blocks = (fatfs->n_fatent - 2) * fatfs->csize;
|
||||
buf->f_bfree = nclust * fatfs->csize;
|
||||
buf->f_bavail = buf->f_bfree;
|
||||
buf->f_files = 0;
|
||||
buf->f_ffree = 0;
|
||||
buf->f_favail = 0;
|
||||
buf->f_fsid = 0;
|
||||
buf->f_flag = ST_NOSUID;
|
||||
buf->f_namemax = FF_LFN_BUF;
|
||||
|
||||
return 0;
|
||||
} else {
|
||||
return fsdev_convert_rc(r, rc);
|
||||
}
|
||||
}
|
||||
|
||||
static int fsdev_ftruncate(struct _reent *r, void *fd, off_t len) {
|
||||
FIL *f = (FIL *)fd;
|
||||
FSIZE_t off = f_tell(f); /* No need to validate this */
|
||||
FRESULT rc = f_lseek(f, (FSIZE_t)len);
|
||||
|
||||
off = off > (FSIZE_t)len ? (FSIZE_t)len : off;
|
||||
if (rc == FR_OK) {
|
||||
rc = f_truncate(f);
|
||||
/* Ignore errors while attempting restore the position */
|
||||
f_lseek(f, off);
|
||||
return fsdev_convert_rc(r, rc);
|
||||
} else {
|
||||
return fsdev_convert_rc(r, rc);
|
||||
}
|
||||
}
|
||||
|
||||
static int fsdev_fsync(struct _reent *r, void *fd) {
|
||||
FIL *f = (FIL *)fd;
|
||||
return fsdev_convert_rc(r, f_sync(f));
|
||||
}
|
||||
|
||||
static int fsdev_chmod(struct _reent *r, const char *path, mode_t mode) {
|
||||
(void)path;
|
||||
(void)mode;
|
||||
r->_errno = ENOSYS;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int fsdev_fchmod(struct _reent *r, void *fd, mode_t mode) {
|
||||
(void)fd;
|
||||
(void)mode;
|
||||
r->_errno = ENOSYS;
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int fsdev_rmdir(struct _reent *r, const char *name) {
|
||||
return fsdev_convert_rc(r, f_unlink(name));
|
||||
}
|
||||
15
fusee/fusee-secondary/src/fs_dev.h
Normal file
15
fusee/fusee-secondary/src/fs_dev.h
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
#ifndef FUSEE_FS_DEV_H
|
||||
#define FUSEE_FS_DEV_H
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
int fsdev_mount_device(const char *name);
|
||||
int fsdev_set_default_device(const char *name);
|
||||
int fsdev_unmount_device(const char *name);
|
||||
|
||||
int fsdev_mount_all(void);
|
||||
int fsdev_unmount_all(void);
|
||||
|
||||
#endif
|
||||
|
|
@ -15,7 +15,7 @@
|
|||
/ and optional writing functions as well. */
|
||||
|
||||
|
||||
#define FF_FS_MINIMIZE 3
|
||||
#define FF_FS_MINIMIZE 0
|
||||
/* This option defines minimization level to remove some basic API functions.
|
||||
/
|
||||
/ 0: Basic functions are fully enabled.
|
||||
|
|
@ -117,7 +117,7 @@
|
|||
/ ff_memfree() in ffsystem.c, need to be added to the project. */
|
||||
|
||||
|
||||
#define FF_LFN_UNICODE 0
|
||||
#define FF_LFN_UNICODE 2
|
||||
/* This option switches the character encoding on the API when LFN is enabled.
|
||||
/
|
||||
/ 0: ANSI/OEM in current CP (TCHAR = char)
|
||||
|
|
@ -136,7 +136,7 @@
|
|||
/ on character encoding. When LFN is not enabled, these options have no effect. */
|
||||
|
||||
|
||||
#define FF_STRF_ENCODE 0
|
||||
#define FF_STRF_ENCODE 3
|
||||
/* When FF_LFN_UNICODE >= 1 with LFN enabled, string I/O functions, f_gets(),
|
||||
/ f_putc(), f_puts and f_printf() convert the character encoding in it.
|
||||
/ This option selects assumption of character encoding ON THE FILE to be
|
||||
|
|
@ -149,7 +149,7 @@
|
|||
*/
|
||||
|
||||
|
||||
#define FF_FS_RPATH 0
|
||||
#define FF_FS_RPATH 2
|
||||
/* This option configures support for relative path.
|
||||
/
|
||||
/ 0: Disable relative path and remove related functions.
|
||||
|
|
@ -166,8 +166,8 @@
|
|||
/* Number of volumes (logical drives) to be used. (1-10) */
|
||||
|
||||
|
||||
#define FF_STR_VOLUME_ID 0
|
||||
#define FF_VOLUME_STRS "sd"
|
||||
#define FF_STR_VOLUME_ID 1
|
||||
#define FF_VOLUME_STRS "sdmc"
|
||||
/* FF_STR_VOLUME_ID switches string support for volume ID.
|
||||
/ When FF_STR_VOLUME_ID is set to 1, also pre-defined strings can be used as drive
|
||||
/ number in the path name. FF_VOLUME_STRS defines the drive ID strings for each
|
||||
|
|
|
|||
Loading…
Reference in a new issue