1 /*
2 * Copyright (c) 2020-2021 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
31 #include "osal_file.h"
32 #include "fs/file.h"
33 #include "unistd.h"
34 #include "limits.h"
35 #include "sys/stat.h"
36 #include "hdf_log.h"
37
38 #define HDF_LOG_TAG osal_file
39
OsalFileOpen(OsalFile * file,const char * path,int flags,uint32_t rights)40 int32_t OsalFileOpen(OsalFile *file, const char *path, int flags, uint32_t rights)
41 {
42 int32_t fd = -1;
43 char pathName[PATH_MAX + 1] = {0};
44
45 if (file == NULL || path == NULL) {
46 HDF_LOGE("%s invalid param", __func__);
47 return HDF_ERR_INVALID_PARAM;
48 }
49
50 file->realFile = (void *)(uintptr_t)fd;
51
52 if (realpath(path, pathName) == NULL) {
53 HDF_LOGE("%s file name is invalid\n", __func__);
54 return HDF_FAILURE;
55 }
56
57 fd = open(pathName, flags, rights);
58 if (fd < 0) {
59 HDF_LOGE("%s open file fail %d %d %d", __func__, flags, rights, errno);
60 return HDF_FAILURE;
61 }
62
63 file->realFile = (void *)(uintptr_t)fd;
64 return HDF_SUCCESS;
65 }
66
OsalFileWrite(OsalFile * file,const void * string,uint32_t length)67 ssize_t OsalFileWrite(OsalFile *file, const void *string, uint32_t length)
68 {
69 ssize_t ret;
70
71 if (file == NULL || (int32_t)(uintptr_t)file->realFile == -1 || string == NULL) {
72 HDF_LOGE("%s invalid param", __func__);
73 return HDF_ERR_INVALID_PARAM;
74 }
75
76 ret = write((int32_t)(uintptr_t)file->realFile, string, length);
77 if (ret < 0) {
78 HDF_LOGE("%s write file fail %d %d", __func__, length, errno);
79 return HDF_FAILURE;
80 }
81
82 return ret;
83 }
84
OsalFileClose(OsalFile * file)85 void OsalFileClose(OsalFile *file)
86 {
87 if (file == NULL || (int32_t)(uintptr_t)file->realFile == -1) {
88 HDF_LOGE("%s invalid param", __func__);
89 return;
90 }
91
92 close((int32_t)(uintptr_t)file->realFile);
93 file->realFile = (void *)(uintptr_t)-1;
94 }
95
OsalFileRead(OsalFile * file,void * buf,uint32_t length)96 ssize_t OsalFileRead(OsalFile *file, void *buf, uint32_t length)
97 {
98 ssize_t ret;
99
100 if (file == NULL || (int32_t)(uintptr_t)file->realFile == -1 || buf == NULL) {
101 HDF_LOGE("%s invalid param", __func__);
102 return HDF_ERR_INVALID_PARAM;
103 }
104
105 ret = read((int32_t)(uintptr_t)file->realFile, buf, length);
106 if (ret < 0) {
107 HDF_LOGE("%s read file fail %d %d", __func__, length, errno);
108 return HDF_FAILURE;
109 }
110
111 return ret;
112 }
113
OsalFileLseek(OsalFile * file,off_t offset,int32_t whence)114 off_t OsalFileLseek(OsalFile *file, off_t offset, int32_t whence)
115 {
116 off_t ret;
117
118 if (file == NULL || (int32_t)(uintptr_t)file->realFile == -1) {
119 HDF_LOGE("%s invalid param", __func__);
120 return HDF_ERR_INVALID_PARAM;
121 }
122
123 ret = lseek((int32_t)(uintptr_t)file->realFile, offset, whence);
124 if (ret < 0) {
125 HDF_LOGE("%s lseek file fail %lld %d %d", __func__, offset, whence, errno);
126 return HDF_FAILURE;
127 }
128
129 return ret;
130 }
131
132