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extmod/fsusermount: Implement separate umount() function.

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This commit is contained in:
Paul Sokolovsky 2016-02-10 00:51:47 +02:00
parent 5b85a86ce3
commit 3846fd56c1
1 changed files with 30 additions and 0 deletions
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30
extmod/fsusermount.c
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@ -26,6 +26,8 @@
#include "py/mpconfig.h"
#if MICROPY_FSUSERMOUNT
#include <string.h>
#include <errno.h>
#include "py/nlr.h"
#include "py/runtime.h"
@ -131,6 +133,34 @@ STATIC mp_obj_t fatfs_mount(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t
}
MP_DEFINE_CONST_FUN_OBJ_KW(fsuser_mount_obj, 2, fatfs_mount);
STATIC mp_obj_t fatfs_umount(mp_obj_t bdev_or_path_in) {
if (MP_STATE_PORT(fs_user_mount) == NULL) {
goto einval;
}
if (MP_OBJ_IS_STR(bdev_or_path_in)) {
mp_uint_t mnt_len;
const char *mnt_str = mp_obj_str_get_data(bdev_or_path_in, &mnt_len);
if (memcmp(mnt_str, MP_STATE_PORT(fs_user_mount)->str, mnt_len + 1)) {
goto einval;
}
} else if (bdev_or_path_in != MP_STATE_PORT(fs_user_mount)->readblocks[1]) {
goto einval;
}
FRESULT res = f_mount(NULL, MP_STATE_PORT(fs_user_mount)->str, 0);
m_del_obj(fs_user_mount_t, MP_STATE_PORT(fs_user_mount));
MP_STATE_PORT(fs_user_mount) = NULL;
if (res != FR_OK) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "can't umount"));
}
return mp_const_none;
einval:
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(EINVAL)));
}
MP_DEFINE_CONST_FUN_OBJ_1(fsuser_umount_obj, fatfs_umount);
STATIC mp_obj_t fatfs_mkfs(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
return fatfs_mount_mkfs(n_args, pos_args, kw_args, true);
}