1 /*
2 * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright notice, this list of
8 * conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 * of conditions and the following disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific prior written
16 * permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
22 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 #include "vfs_partition.h"
31 #include "vfs_operations.h"
32 #include "los_fs.h"
33 #include "los_list.h"
34 #include "vfs_maps.h"
35 #include "vfs_mount.h"
36 #include "securec.h"
37 #include "stdlib.h"
38 #include "string.h"
39
40 static struct DeviceDesc *g_deviceList = NULL;
41
GetPartIdByPartName(const char * partName)42 int GetPartIdByPartName(const char *partName)
43 {
44 if (partName == NULL) {
45 return (int)LOS_NOK;
46 }
47
48 /* the character next to p is the partId */
49 char *p = strrchr(partName, 'p');
50 if (p != NULL) {
51 return atoi(p + 1);
52 }
53
54 return (int)LOS_NOK;
55 }
56
GetDevIdByDevName(const char * dev)57 int GetDevIdByDevName(const char *dev)
58 {
59 if (dev == NULL) {
60 return (int)LOS_NOK;
61 }
62
63 /* last character is the deviceId */
64 char *p = (char *)dev + strlen(dev) - 1;
65 if (p != NULL) {
66 return atoi(p);
67 }
68
69 return (int)LOS_NOK;
70 }
71
getDeviceList(VOID)72 struct DeviceDesc *getDeviceList(VOID)
73 {
74 return g_deviceList;
75 }
76
AddDevice(const char * dev,const char * fsType,int * lengthArray,int * addrArray,int partNum)77 static int AddDevice(const char *dev, const char *fsType, int *lengthArray, int *addrArray,
78 int partNum)
79 {
80 size_t len;
81 struct DeviceDesc *prev = NULL;
82 for (prev = g_deviceList; prev != NULL; prev = prev->dNext) {
83 if (strcmp(prev->dDev, dev) == 0) {
84 errno = -EEXIST;
85 return (int)LOS_NOK;
86 }
87 }
88
89 if (addrArray == NULL) {
90 errno = -EFAULT;
91 return (int)LOS_NOK;
92 }
93
94 prev = (struct DeviceDesc *)LOSCFG_FS_MALLOC_HOOK(sizeof(struct DeviceDesc));
95 if (prev == NULL) {
96 errno = -ENOMEM;
97 return (int)LOS_NOK;
98 }
99 len = strlen(dev) + 1;
100 prev->dDev = LOSCFG_FS_MALLOC_HOOK(len);
101 len = strlen(fsType) + 1;
102 prev->dFsType = LOSCFG_FS_MALLOC_HOOK(len);
103 prev->dAddrArray = (int *)LOSCFG_FS_MALLOC_HOOK(partNum * sizeof(int));
104 if (prev->dDev == NULL || prev->dFsType == NULL || prev->dAddrArray == NULL) {
105 goto errout;
106 }
107 (void)strcpy_s((char *)prev->dDev, len, dev);
108 (void)strcpy_s((char *)prev->dFsType, len, fsType);
109 (void)memcpy_s(prev->dAddrArray, partNum * sizeof(int), addrArray, partNum * sizeof(int));
110
111 if (lengthArray != NULL) {
112 prev->dLengthArray = (int *)LOSCFG_FS_MALLOC_HOOK(partNum * sizeof(int));
113 if (prev->dLengthArray == NULL) {
114 goto errout;
115 }
116 (void)memcpy_s(prev->dLengthArray, partNum * sizeof(int), lengthArray, partNum * sizeof(int));
117 }
118
119 prev->dNext = g_deviceList;
120 prev->dPartNum = partNum;
121 g_deviceList = prev;
122 return LOS_OK;
123 errout:
124 if (prev->dDev != NULL) {
125 LOSCFG_FS_FREE_HOOK((void *)prev->dDev);
126 }
127 if (prev->dFsType != NULL) {
128 LOSCFG_FS_FREE_HOOK((void *)prev->dFsType);
129 }
130 if (prev->dAddrArray != NULL) {
131 LOSCFG_FS_FREE_HOOK((void *)prev->dAddrArray);
132 }
133 if (prev->dLengthArray != NULL) {
134 LOSCFG_FS_FREE_HOOK((void *)prev->dLengthArray);
135 }
136
137 LOSCFG_FS_FREE_HOOK(prev);
138 errno = -ENOMEM;
139 return (int)LOS_NOK;
140 }
141
142
LOS_DiskPartition(const char * dev,const char * fsType,int * lengthArray,int * addrArray,int partNum)143 int LOS_DiskPartition(const char *dev, const char *fsType, int *lengthArray, int *addrArray,
144 int partNum)
145 {
146 int ret = (int)LOS_NOK;
147 struct FsMap *fMap = VfsFsMapGet(fsType);
148 if ((fMap != NULL) && (fMap->fsMgt != NULL) &&
149 (fMap->fsMgt->fdisk != NULL)) {
150 ret = fMap->fsMgt->fdisk(dev, lengthArray, partNum);
151 return ret;
152 }
153
154 ret = AddDevice(dev, fsType, lengthArray, addrArray, partNum);
155 return ret;
156 }
157
LOS_PartitionFormat(const char * partName,char * fsType,void * data)158 int LOS_PartitionFormat(const char *partName, char *fsType, void *data)
159 {
160 int ret = (int)LOS_NOK;
161
162 /* check if the device is mounted by iterate the mp list
163 format is not allowed when the device has been mounted. */
164 struct MountPoint *iter = NULL;
165 LOS_MP_FOR_EACH_ENTRY(iter) {
166 if ((iter->mPath != NULL) && (strcmp(iter->mPath, partName) == 0)) {
167 errno = EBUSY;
168 return (int)LOS_NOK;
169 }
170 }
171
172 struct FsMap *fMap = VfsFsMapGet(fsType);
173 if ((fMap != NULL) && (fMap->fsMgt != NULL) &&
174 (fMap->fsMgt->format != NULL)) {
175 ret = fMap->fsMgt->format(partName, data);
176 }
177
178 return ret;
179 }
180