更新日期: 2022/06/01 来源: https://gitee.com/weharmony/kernel_liteos_a_note
format.c
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1/*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "errno.h"
33#include "fatfs.h"
34#include "unistd.h"
35#include "stdio.h"
36#include "string.h"
37#include "errcode_fat.h"
38#include "integer.h"
39#ifdef LOSCFG_FS_FAT
40
41char FatLabel[LABEL_LEN];
42#define DEV_NAME_SIZE 4
43
44int format(const char *dev, int sectors, int option)
45{
46 struct Vnode *device = NULL;
47 INT err;
48 if (dev == NULL) {
49 set_errno(EINVAL);
50 return -1;
51 }
52
53 if (strncmp(dev, "/dev", DEV_NAME_SIZE) != 0) {
54 PRINTK("Usage :\n");
55 PRINTK(" format <dev_vnodename> <sectors> <option> <label>\n");
56 PRINTK(" dev_vnodename : the name of dev\n");
57 PRINTK(" sectors : Size of allocation unit in unit of byte or sector, ");
58 PRINTK("0 instead of default size\n");
59 PRINTK(" options : Index of filesystem. 1 for FAT filesystem, 2 for FAT32 filesystem, ");
60 PRINTK("7 for any, 8 for erase\n");
61 PRINTK(" label : The volume of device. It will be emptyed when this parameter is null\n");
62 PRINTK("Example:\n");
63 PRINTK(" format /dev/mmcblk0 128 2\n");
64
65 set_errno(EINVAL);
66 return -1;
67 }
68 VnodeHold();
69 err = VnodeLookup(dev, &device, 0);
70 if (err == -ENOENT || err == -ENOSYS) {
71 VnodeDrop();
72 set_errno(ENODEV);
73 return -1;
74 } else if (err < 0) {
75 VnodeDrop();
76 set_errno(-err);
77 return -1;
78 }
79 err = fatfs_mkfs(device, sectors, option);
80 if (err < 0) {
81 VnodeDrop();
82 set_errno(-err);
83 return -1;
84 }
85#ifdef LOSCFG_FS_FAT_VIRTUAL_PARTITION
86 else if (err >= VIRERR_BASE) {
87 set_errno(err);
88 }
89#endif
90 VnodeDrop();
91 return 0;
92}
93
94void set_label(const char *name)
95{
96 INT len;
97 INT err;
98
99 (void)memset_s(FatLabel, LABEL_LEN, 0, LABEL_LEN);
100
101 if (name == NULL || *name == '\0') {
102 return;
103 }
104
105 len = strlen(name);
106 if (len >= LABEL_LEN) {
107 len = LABEL_LEN - 1;
108 }
109
110 err = strncpy_s(FatLabel, LABEL_LEN, name, len);
111 if (err != EOK) {
112 PRINT_ERR("Fat set_label error");
113 }
114}
115#endif /* #ifdef CONFIG_FS_FAT */
int fatfs_mkfs(struct Vnode *device, int sectors, int option)
Definition: fatfs.c:1885
void set_label(const char *name)
Definition: format.c:94
int format(const char *dev, int sectors, int option)
formatting sd card
Definition: format.c:44
char FatLabel[LABEL_LEN]
Definition: format.c:41
vnode并不包含文件名,因为 vnode和文件名是 1:N 的关系
Definition: vnode.h:164
ARG_NUM_3 ARG_NUM_1 ARG_NUM_2 ARG_NUM_2 ARG_NUM_3 ARG_NUM_1 ARG_NUM_4 ARG_NUM_2 ARG_NUM_2 ARG_NUM_5 ARG_NUM_2 void
int VnodeDrop(void)
归还锁
Definition: vnode.c:292
int VnodeHold(void)
拿锁,封装互斥量
Definition: vnode.c:283
int VnodeLookup(const char *path, struct Vnode **vnode, uint32_t flags)
通过路径查询vnode节点
Definition: vnode.c:491