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extmod/fsusermount: Introduce separate mkfs() function.

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Per the previously discussed plan. mount() still stays backward-compatible,
and new mkfs() is rought and takes more args than needed. But is a step
in a forward direction.
This commit is contained in:
Paul Sokolovsky 2016-02-10 00:50:07 +02:00
parent a2e5e4c3d8
commit 5b85a86ce3
3 changed files with 30 additions and 6 deletions
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30
extmod/fsusermount.c
View File

@ -32,7 +32,7 @@
#include "lib/fatfs/ff.h"
#include "fsusermount.h"
STATIC mp_obj_t pyb_mount(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
STATIC mp_obj_t fatfs_mount_mkfs(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args, bool mkfs) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_readonly, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
{ MP_QSTR_mkfs, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
@ -85,15 +85,28 @@ STATIC mp_obj_t pyb_mount(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *
vfs->writeblocks[0] = MP_OBJ_NULL;
}
// mount the block device
FRESULT res = f_mount(&vfs->fatfs, vfs->str, 1);
// mount the block device (if mkfs, only pre-mount)
FRESULT res = f_mount(&vfs->fatfs, vfs->str, !mkfs);
// check the result
if (res == FR_OK) {
if (mkfs) {
goto mkfs;
}
} else if (res == FR_NO_FILESYSTEM && args[1].u_bool) {
mkfs:
res = f_mkfs(vfs->str, 1, 0);
if (res != FR_OK) {
mkfs_error:
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "can't mkfs"));
}
if (mkfs) {
// If requested to only mkfs, unmount pre-mounted device
res = f_mount(NULL, vfs->str, 0);
if (res != FR_OK) {
goto mkfs_error;
}
MP_STATE_PORT(fs_user_mount) = NULL;
}
} else {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, "can't mount"));
}
@ -112,6 +125,15 @@ STATIC mp_obj_t pyb_mount(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(pyb_mount_obj, 2, pyb_mount);
STATIC mp_obj_t fatfs_mount(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, false);
}
MP_DEFINE_CONST_FUN_OBJ_KW(fsuser_mount_obj, 2, fatfs_mount);
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);
}
MP_DEFINE_CONST_FUN_OBJ_KW(fsuser_mkfs_obj, 2, fatfs_mkfs);
#endif // MICROPY_FSUSERMOUNT

3
extmod/fsusermount.h
View File

@ -34,4 +34,5 @@ typedef struct _fs_user_mount_t {
FATFS fatfs;
} fs_user_mount_t;
MP_DECLARE_CONST_FUN_OBJ(pyb_mount_obj);
MP_DECLARE_CONST_FUN_OBJ(fsuser_mount_obj);
MP_DECLARE_CONST_FUN_OBJ(fsuser_mkfs_obj);

3
stmhal/modpyb.c
View File

@ -61,6 +61,7 @@
#include "usb.h"
#include "portmodules.h"
#include "modmachine.h"
#include "extmod/fsusermount.h"
/// \function millis()
/// Returns the number of milliseconds since the board was last reset.
@ -164,7 +165,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
{ MP_OBJ_NEW_QSTR(MP_QSTR_delay), (mp_obj_t)&time_sleep_ms_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_udelay), (mp_obj_t)&time_sleep_us_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_sync), (mp_obj_t)&mod_os_sync_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_mount), (mp_obj_t)&pyb_mount_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_mount), (mp_obj_t)&fsuser_mount_obj },
{ MP_OBJ_NEW_QSTR(MP_QSTR_Timer), (mp_obj_t)&pyb_timer_type },