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stmhal: Add os.statvfs

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Implement enough of statvfs to determine the amount of free
space on a volume.
This commit is contained in:
Dave Hylands 2016-01-15 21:56:08 -08:00 committed by Damien George
parent a17755ee8b
commit f22844b4e5
2 changed files with 32 additions and 0 deletions
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31
stmhal/moduos.c
View File

@ -349,6 +349,36 @@ error:
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(os_stat_obj, os_stat);
STATIC mp_obj_t os_statvfs(mp_obj_t path_in) {
const char *path = mp_obj_str_get_str(path_in);
DWORD nclst;
FATFS *fatfs;
FRESULT res = f_getfree(path, &nclst, &fatfs);
if (res != FR_OK) {
goto error;
}
mp_obj_tuple_t *t = mp_obj_new_tuple(10, NULL);
t->items[0] = MP_OBJ_NEW_SMALL_INT(fatfs->csize * 512); // f_bsize - block size
t->items[1] = t->items[0]; // f_frsize - fragment size
t->items[2] = MP_OBJ_NEW_SMALL_INT(0); // f_blocks - total number of blocks
t->items[3] = MP_OBJ_NEW_SMALL_INT(nclst); // f_bfree - number of free blocks
t->items[4] = t->items[3]; // f_bavail - free blocks avail to unpriviledged users
t->items[5] = MP_OBJ_NEW_SMALL_INT(0); // f_files - # inodes
t->items[6] = MP_OBJ_NEW_SMALL_INT(0); // f_ffree - # free inodes
t->items[7] = MP_OBJ_NEW_SMALL_INT(0); // f_favail - # free inodes avail to unpriviledges users
t->items[8] = MP_OBJ_NEW_SMALL_INT(0); // f_flags
t->items[9] = MP_OBJ_NEW_SMALL_INT(_MAX_LFN); // f_namemax
return t;
error:
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(fresult_to_errno_table[res])));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(os_statvfs_obj, os_statvfs);
/// \function sync()
/// Sync all filesystems.
STATIC mp_obj_t os_sync(void) {
@ -410,6 +440,7 @@ STATIC const mp_map_elem_t os_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_rename),(mp_obj_t)&os_rename_obj},
{ MP_OBJ_NEW_QSTR(MP_QSTR_rmdir), (mp_obj_t)&os_rmdir_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_stat), (mp_obj_t)&os_stat_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_statvfs), (mp_obj_t)&os_statvfs_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_unlink), (mp_obj_t)&os_remove_obj }, // unlink aliases to remove
{ MP_OBJ_NEW_QSTR(MP_QSTR_sync), (mp_obj_t)&mod_os_sync_obj },

1
stmhal/qstrdefsport.h
View File

@ -396,6 +396,7 @@ Q(rmdir)
Q(unlink)
Q(sep)
Q(stat)
Q(statvfs)
Q(urandom)
Q(dupterm)