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preserve errno in OSError

This commit is contained in:
Dan Halbert 2020-02-04 16:19:40 -05:00
parent 57b566e736
commit 5164719e67
4 changed files with 14 additions and 9 deletions
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3
extmod/vfs_fat_file.c
View File

@ -28,6 +28,7 @@
#if MICROPY_VFS && MICROPY_VFS_FAT
#include <stdio.h>
#include <string.h>
#include "py/runtime.h"
#include "py/stream.h"
@ -199,7 +200,7 @@ STATIC mp_obj_t file_open(fs_user_mount_t *vfs, const mp_obj_type_t *type, mp_ar
FRESULT res = f_open(&vfs->fatfs, &o->fp, fname, mode);
if (res != FR_OK) {
m_del_obj(pyb_file_obj_t, o);
mp_raise_OSError_errno_str(fresult_to_errno_table[res], fname);
mp_raise_OSError_errno_str(fresult_to_errno_table[res], args[0].u_obj);
}
// If we're reading, turn on fast seek.
if (mode == FA_READ) {

7
py/objexcept.c
View File

@ -112,14 +112,17 @@ void mp_obj_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kin
if (o->args == NULL || o->args->len == 0) {
mp_print_str(print, "");
return;
} else if (o->args->len == 1) {
// try to provide a nice OSError error message
} else if (o->args->len <= 2) {
// try to provide a nice OSError error message; second arg might exist (e.g. filename).
if (MP_OBJ_IS_SMALL_INT(o->args->items[0]) &&
mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(o->base.type), MP_OBJ_FROM_PTR(&mp_type_OSError))) {
char decompressed[50];
const char *msg = mp_common_errno_to_str(o->args->items[0], decompressed, sizeof(decompressed));
if (msg != NULL) {
mp_printf(print, "[Errno " INT_FMT "] %s", MP_OBJ_SMALL_INT_VALUE(o->args->items[0]), msg);
if (o->args->len == 2) {
mp_printf(print, ": '%s'", mp_obj_str_get_str(o->args->items[1]));
}
return;
}
}

11
py/runtime.c
View File

@ -1578,11 +1578,12 @@ NORETURN void mp_raise_OSError_msg(const compressed_string_t *msg) {
mp_raise_msg(&mp_type_OSError, msg);
}
NORETURN void mp_raise_OSError_errno_str(int errno_, const char *str) {
char decompressed[50];
const char *errno_str = mp_common_errno_to_str(MP_OBJ_NEW_SMALL_INT(errno_),
decompressed, sizeof(decompressed));
mp_raise_OSError_msg_varg(translate("[Errno %d] %s: %s"), errno_, errno_str, str);
NORETURN void mp_raise_OSError_errno_str(int errno_, mp_obj_t str) {
mp_obj_t args[2] = {
MP_OBJ_NEW_SMALL_INT(errno_),
str,
};
nlr_raise(mp_obj_new_exception_args(&mp_type_OSError, 2, args));
}
NORETURN void mp_raise_OSError_msg_varg(const compressed_string_t *fmt, ...) {

2
py/runtime.h
View File

@ -161,7 +161,7 @@ NORETURN void mp_raise_RuntimeError(const compressed_string_t *msg);
NORETURN void mp_raise_ImportError(const compressed_string_t *msg);
NORETURN void mp_raise_IndexError(const compressed_string_t *msg);
NORETURN void mp_raise_OSError(int errno_);
NORETURN void mp_raise_OSError_errno_str(int errno_, const char *str);
NORETURN void mp_raise_OSError_errno_str(int errno_, mp_obj_t str);
NORETURN void mp_raise_OSError_msg(const compressed_string_t *msg);
NORETURN void mp_raise_OSError_msg_varg(const compressed_string_t *fmt, ...);
NORETURN void mp_raise_NotImplementedError(const compressed_string_t *msg);