1 | /* $Id: VBoxSF-Utils.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * VBoxSF - Darwin Shared Folders, Utility Functions.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2013-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 |
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29 | /*********************************************************************************************************************************
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30 | * Header Files *
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31 | *********************************************************************************************************************************/
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32 | #define LOG_GROUP LOG_GROUP_SHARED_FOLDERS
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33 | #include "VBoxSFInternal.h"
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34 |
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35 | #include <iprt/assert.h>
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36 | #include <iprt/mem.h>
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37 | #include <VBox/log.h>
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38 |
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39 | #if 0
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40 | /**
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41 | * Helper function to create XNU VFS vnode object.
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42 | *
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43 | * @param mp Mount data structure
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44 | * @param type vnode type (directory, regular file, etc)
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45 | * @param pParent Parent vnode object (NULL for VBoxVFS root vnode)
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46 | * @param fIsRoot Flag that indicates if created vnode object is
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47 | * VBoxVFS root vnode (TRUE for VBoxVFS root vnode, FALSE
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48 | * for all aother vnodes)
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49 | * @param Path within Shared Folder
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50 | * @param ret Returned newly created vnode
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51 | *
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52 | * @return 0 on success, error code otherwise
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53 | */
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54 | int
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55 | vboxvfs_create_vnode_internal(struct mount *mp, enum vtype type, vnode_t pParent, int fIsRoot, PSHFLSTRING Path, vnode_t *ret)
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56 | {
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57 | int rc;
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58 | vnode_t vnode;
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59 |
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60 | vboxvfs_vnode_t *pVnodeData;
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61 | vboxvfs_mount_t *pMount;
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62 |
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63 | AssertReturn(mp, EINVAL);
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64 |
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65 | pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp);
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66 | AssertReturn(pMount, EINVAL);
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67 | AssertReturn(pMount->pLockGroup, EINVAL);
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68 |
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69 | AssertReturn(Path, EINVAL);
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70 |
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71 | pVnodeData = (vboxvfs_vnode_t *)RTMemAllocZ(sizeof(vboxvfs_vnode_t));
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72 | AssertReturn(pVnodeData, ENOMEM);
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73 |
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74 | /* Initialize private data */
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75 | pVnodeData->pHandle = SHFL_HANDLE_NIL;
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76 | pVnodeData->pPath = Path;
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77 |
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78 | pVnodeData->pLockAttr = lck_attr_alloc_init();
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79 | if (pVnodeData->pLockAttr)
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80 | {
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81 | pVnodeData->pLock = lck_rw_alloc_init(pMount->pLockGroup, pVnodeData->pLockAttr);
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82 | if (pVnodeData->pLock)
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83 | {
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84 | struct vnode_fsparam vnode_params;
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85 |
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86 | vnode_params.vnfs_mp = mp;
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87 | vnode_params.vnfs_vtype = type;
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88 | vnode_params.vnfs_str = NULL;
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89 | vnode_params.vnfs_dvp = pParent;
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90 | vnode_params.vnfs_fsnode = pVnodeData; /** Private data attached per xnu's vnode object */
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91 | vnode_params.vnfs_vops = g_papfnVBoxVFSVnodeDirOpsVector;
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92 |
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93 | vnode_params.vnfs_markroot = fIsRoot;
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94 | vnode_params.vnfs_marksystem = FALSE;
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95 | vnode_params.vnfs_rdev = 0;
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96 | vnode_params.vnfs_filesize = 0;
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97 | vnode_params.vnfs_cnp = NULL;
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98 |
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99 | vnode_params.vnfs_flags = VNFS_ADDFSREF | VNFS_NOCACHE;
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100 |
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101 | rc = vnode_create(VNCREATE_FLAVOR, sizeof(vnode_params), &vnode_params, &vnode);
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102 | if (rc == 0)
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103 | *ret = vnode;
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104 |
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105 | return 0;
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106 | }
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107 | else
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108 | {
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109 | PDEBUG("Unable to allocate lock");
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110 | rc = ENOMEM;
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111 | }
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112 |
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113 | lck_attr_free(pVnodeData->pLockAttr);
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114 | }
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115 | else
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116 | {
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117 | PDEBUG("Unable to allocate lock attr");
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118 | rc = ENOMEM;
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119 | }
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120 |
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121 | return rc;
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122 | }
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123 |
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124 | /**
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125 | * Convert guest absolute VFS path (starting from VFS root) to a host path
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126 | * within mounted shared folder (returning it as a char *).
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127 | *
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128 | * @param mp Mount data structure
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129 | * @param pszGuestPath Guest absolute VFS path (starting from VFS root)
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130 | * @param cbGuestPath Size of pszGuestPath
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131 | * @param pszHostPath Returned char * wich contains host path
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132 | * @param cbHostPath Returned pszHostPath size
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133 | *
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134 | * @return 0 on success, error code otherwise
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135 | */
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136 | int
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137 | vboxvfs_guest_path_to_char_path_internal(mount_t mp, char *pszGuestPath, int cbGuestPath, char **pszHostPath, int *cbHostPath)
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138 | {
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139 | vboxvfs_mount_t *pMount;
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140 |
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141 | /* Guest side: mount point path buffer and its size */
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142 | char *pszMntPointPath;
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143 | int cbMntPointPath = MAXPATHLEN;
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144 |
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145 | /* Host side: path within mounted shared folder and its size */
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146 | char *pszHostPathInternal;
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147 | size_t cbHostPathInternal;
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148 |
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149 | int rc;
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150 |
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151 | AssertReturn(mp, EINVAL);
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152 | AssertReturn(pszGuestPath, EINVAL); AssertReturn(cbGuestPath >= 0, EINVAL);
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153 | AssertReturn(pszHostPath, EINVAL); AssertReturn(cbHostPath, EINVAL);
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154 |
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155 | pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL); AssertReturn(pMount->pRootVnode, EINVAL);
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156 |
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157 | /* Get mount point path */
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158 | pszMntPointPath = (char *)RTMemAllocZ(cbMntPointPath);
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159 | if (pszMntPointPath)
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160 | {
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161 | rc = vn_getpath(pMount->pRootVnode, pszMntPointPath, &cbMntPointPath);
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162 | if (rc == 0 && cbGuestPath >= cbMntPointPath)
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163 | {
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164 | cbHostPathInternal = cbGuestPath - cbMntPointPath + 1;
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165 | pszHostPathInternal = (char *)RTMemAllocZ(cbHostPathInternal);
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166 | if (pszHostPathInternal)
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167 | {
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168 | memcpy(pszHostPathInternal, pszGuestPath + cbMntPointPath, cbGuestPath - cbMntPointPath);
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169 | PDEBUG("guest<->host path converion result: '%s' mounted to '%s'", pszHostPathInternal, pszMntPointPath);
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170 |
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171 | RTMemFree(pszMntPointPath);
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172 |
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173 | *pszHostPath = pszHostPathInternal;
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174 | *cbHostPath = cbGuestPath - cbMntPointPath;
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175 |
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176 | return 0;
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177 |
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178 | }
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179 | else
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180 | {
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181 | PDEBUG("No memory to allocate buffer for guest<->host path conversion (cbHostPathInternal)");
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182 | rc = ENOMEM;
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183 | }
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184 |
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185 | }
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186 | else
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187 | {
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188 | PDEBUG("Unable to get guest vnode path: %d", rc);
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189 | }
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190 |
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191 | RTMemFree(pszMntPointPath);
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192 | }
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193 | else
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194 | {
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195 | PDEBUG("No memory to allocate buffer for guest<->host path conversion (pszMntPointPath)");
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196 | rc = ENOMEM;
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197 | }
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198 |
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199 | return rc;
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200 | }
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201 |
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202 | /**
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203 | * Convert guest absolute VFS path (starting from VFS root) to a host path
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204 | * within mounted shared folder.
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205 | *
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206 | * @param mp Mount data structure
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207 | * @param pszGuestPath Guest absolute VFS path (starting from VFS root)
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208 | * @param cbGuestPath Size of pszGuestPath
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209 | * @param ppResult Returned PSHFLSTRING object wich contains host path
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210 | *
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211 | * @return 0 on success, error code otherwise
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212 | */
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213 | int
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214 | vboxvfs_guest_path_to_shflstring_path_internal(mount_t mp, char *pszGuestPath, int cbGuestPath, PSHFLSTRING *ppResult)
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215 | {
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216 | vboxvfs_mount_t *pMount;
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217 |
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218 | /* Guest side: mount point path buffer and its size */
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219 | char *pszMntPointPath;
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220 | int cbMntPointPath = MAXPATHLEN;
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221 |
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222 | /* Host side: path within mounted shared folder and its size */
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223 | PSHFLSTRING pSFPath;
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224 | size_t cbSFPath;
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225 |
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226 | int rc;
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227 |
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228 | AssertReturn(mp, EINVAL);
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229 | AssertReturn(pszGuestPath, EINVAL);
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230 | AssertReturn(cbGuestPath >= 0, EINVAL);
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231 |
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232 | char *pszHostPath;
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233 | int cbHostPath;
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234 |
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235 | rc = vboxvfs_guest_path_to_char_path_internal(mp, pszGuestPath, cbGuestPath, &pszHostPath, &cbHostPath);
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236 | if (rc == 0)
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237 | {
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238 | cbSFPath = offsetof(SHFLSTRING, String.utf8) + (size_t)cbHostPath + 1;
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239 | pSFPath = (PSHFLSTRING)RTMemAllocZ(cbSFPath);
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240 | if (pSFPath)
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241 | {
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242 | pSFPath->u16Length = cbHostPath;
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243 | pSFPath->u16Size = cbHostPath + 1;
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244 | memcpy(pSFPath->String.utf8, pszHostPath, cbHostPath);
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245 | vboxvfs_put_path_internal((void **)&pszHostPath);
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246 |
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247 | *ppResult = pSFPath;
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248 | }
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249 | }
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250 |
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251 | return rc;
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252 | }
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253 |
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254 | /**
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255 | * Wrapper function for vboxvfs_guest_path_to_char_path_internal() which
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256 | * converts guest path to host path using vnode object information.
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257 | *
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258 | * @param vnode Guest's VFS object
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259 | * @param ppHostPath Allocated char * which contain a path
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260 | * @param pcbPath Size of ppPath
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261 | *
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262 | * @return 0 on success, error code otherwise.
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263 | */
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264 | int
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265 | vboxvfs_guest_vnode_to_char_path_internal(vnode_t vnode, char **ppHostPath, int *pcbHostPath)
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266 | {
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267 | mount_t mp;
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268 | int rc;
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269 |
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270 | char *pszPath;
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271 | int cbPath = MAXPATHLEN;
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272 |
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273 | AssertReturn(ppHostPath, EINVAL);
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274 | AssertReturn(pcbHostPath, EINVAL);
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275 | AssertReturn(vnode, EINVAL);
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276 | mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
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277 |
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278 | pszPath = (char *)RTMemAllocZ(cbPath);
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279 | if (pszPath)
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280 | {
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281 | rc = vn_getpath(vnode, pszPath, &cbPath);
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282 | if (rc == 0)
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283 | {
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284 | return vboxvfs_guest_path_to_char_path_internal(mp, pszPath, cbPath, ppHostPath, pcbHostPath);
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285 | }
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286 | }
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287 | else
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288 | {
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289 | rc = ENOMEM;
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290 | }
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291 |
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292 | return rc;
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293 | }
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294 |
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295 | /**
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296 | * Wrapper function for vboxvfs_guest_path_to_shflstring_path_internal() which
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297 | * converts guest path to host path using vnode object information.
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298 | *
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299 | * @param vnode Guest's VFS object
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300 | * @param ppResult Allocated PSHFLSTRING object which contain a path
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301 | *
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302 | * @return 0 on success, error code otherwise.
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303 | */
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304 | int
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305 | vboxvfs_guest_vnode_to_shflstring_path_internal(vnode_t vnode, PSHFLSTRING *ppResult)
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306 | {
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307 | mount_t mp;
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308 | int rc;
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309 |
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310 | char *pszPath;
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311 | int cbPath = MAXPATHLEN;
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312 |
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313 | AssertReturn(ppResult, EINVAL);
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314 | AssertReturn(vnode, EINVAL);
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315 | mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
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316 |
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317 | pszPath = (char *)RTMemAllocZ(cbPath);
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318 | if (pszPath)
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319 | {
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320 | rc = vn_getpath(vnode, pszPath, &cbPath);
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321 | if (rc == 0)
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322 | {
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323 | return vboxvfs_guest_path_to_shflstring_path_internal(mp, pszPath, cbPath, ppResult);
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324 | }
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325 | }
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326 | else
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327 | {
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328 | rc = ENOMEM;
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329 | }
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330 |
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331 | return rc;
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332 | }
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333 |
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334 |
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335 | /**
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336 | * Free resources allocated by vboxvfs_path_internal() and vboxvfs_guest_vnode_to_shflstring_path_internal().
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337 | *
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338 | * @param ppHandle Reference to object to be freed.
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339 | */
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340 | void
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341 | vboxvfs_put_path_internal(void **ppHandle)
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342 | {
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343 | AssertReturnVoid(ppHandle);
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344 | AssertReturnVoid(*ppHandle);
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345 | RTMemFree(*ppHandle);
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346 | }
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347 |
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348 | static void
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349 | vboxvfs_g2h_mode_dump_inernal(uint32_t fHostMode)
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350 | {
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351 | PDEBUG("Host VFS object flags (0x%X) dump:", (int)fHostMode);
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352 |
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353 | if (fHostMode & SHFL_CF_ACCESS_READ) PDEBUG("SHFL_CF_ACCESS_READ");
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354 | if (fHostMode & SHFL_CF_ACCESS_WRITE) PDEBUG("SHFL_CF_ACCESS_WRITE");
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355 | if (fHostMode & SHFL_CF_ACCESS_APPEND) PDEBUG("SHFL_CF_ACCESS_APPEND");
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356 |
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357 | if ((fHostMode & (SHFL_CF_ACT_FAIL_IF_EXISTS |
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358 | SHFL_CF_ACT_REPLACE_IF_EXISTS |
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359 | SHFL_CF_ACT_OVERWRITE_IF_EXISTS)) == 0)
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360 | PDEBUG("SHFL_CF_ACT_OPEN_IF_EXISTS");
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361 |
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362 | if (fHostMode & SHFL_CF_ACT_CREATE_IF_NEW) PDEBUG("SHFL_CF_ACT_CREATE_IF_NEW");
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363 | if (fHostMode & SHFL_CF_ACT_FAIL_IF_NEW) PDEBUG("SHFL_CF_ACT_FAIL_IF_NEW");
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364 | if (fHostMode & SHFL_CF_ACT_OVERWRITE_IF_EXISTS) PDEBUG("SHFL_CF_ACT_OVERWRITE_IF_EXISTS");
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365 | if (fHostMode & SHFL_CF_DIRECTORY) PDEBUG("SHFL_CF_DIRECTORY");
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366 |
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367 | PDEBUG("Done");
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368 | }
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369 |
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370 |
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371 | /**
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372 | * Open existing VBoxVFS object and return its handle.
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373 | *
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374 | * @param pMount Mount session data.
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375 | * @param pPath VFS path to the object relative to mount point.
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376 | * @param fFlags For directory object it should be
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377 | * SHFL_CF_DIRECTORY and 0 for any other object.
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378 | * @param pHandle Returned handle.
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379 | *
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380 | * @return 0 on success, error code otherwise.
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381 | */
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382 | int
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383 | vboxvfs_open_internal(vboxvfs_mount_t *pMount, PSHFLSTRING pPath, uint32_t fFlags, SHFLHANDLE *pHandle)
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384 | {
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385 | SHFLCREATEPARMS parms;
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386 |
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387 | int rc;
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388 |
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389 | AssertReturn(pMount, EINVAL);
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390 | AssertReturn(pPath, EINVAL);
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391 | AssertReturn(pHandle, EINVAL);
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392 |
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393 | bzero(&parms, sizeof(parms));
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394 |
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395 | vboxvfs_g2h_mode_dump_inernal(fFlags);
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396 |
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397 | parms.Handle = SHFL_HANDLE_NIL;
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398 | parms.Info.cbObject = 0;
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399 | parms.CreateFlags = fFlags;
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400 |
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401 | rc = VbglR0SfCreate(&g_SfClientDarwin, &pMount->pMap, pPath, &parms);
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402 | if (RT_SUCCESS(rc))
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403 | {
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404 | *pHandle = parms.Handle;
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405 | }
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406 | else
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407 | {
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408 | PDEBUG("vboxvfs_open_internal() failed: %d", rc);
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409 | }
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410 |
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411 | return rc;
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412 | }
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413 |
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414 | /**
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415 | * Release VBoxVFS object handle openned by vboxvfs_open_internal().
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416 | *
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417 | * @param pMount Mount session data.
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418 | * @param pHandle Handle to close.
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419 | *
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420 | * @return 0 on success, IPRT error code otherwise.
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421 | */
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422 | int
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423 | vboxvfs_close_internal(vboxvfs_mount_t *pMount, SHFLHANDLE pHandle)
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424 | {
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425 | AssertReturn(pMount, EINVAL);
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426 | return VbglR0SfClose(&g_SfClientDarwin, &pMount->pMap, pHandle);
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427 | }
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428 |
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429 | /**
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430 | * Get information about host VFS object.
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431 | *
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432 | * @param mp Mount point data
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433 | * @param pSHFLDPath Path to VFS object within mounted shared folder
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434 | * @param Info Returned info
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435 | *
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436 | * @return 0 on success, error code otherwise.
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437 | */
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438 | int
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439 | vboxvfs_get_info_internal(mount_t mp, PSHFLSTRING pSHFLDPath, PSHFLFSOBJINFO Info)
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440 | {
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441 | vboxvfs_mount_t *pMount;
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442 | SHFLCREATEPARMS parms;
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443 |
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444 | int rc;
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445 |
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446 | AssertReturn(mp, EINVAL);
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---|
447 | AssertReturn(pSHFLDPath, EINVAL);
|
---|
448 | AssertReturn(Info, EINVAL);
|
---|
449 |
|
---|
450 | pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL);
|
---|
451 |
|
---|
452 | parms.Handle = 0;
|
---|
453 | parms.Info.cbObject = 0;
|
---|
454 | parms.CreateFlags = SHFL_CF_LOOKUP | SHFL_CF_ACT_FAIL_IF_NEW;
|
---|
455 |
|
---|
456 | rc = VbglR0SfCreate(&g_SfClientDarwin, &pMount->pMap, pSHFLDPath, &parms);
|
---|
457 | if (rc == 0)
|
---|
458 | *Info = parms.Info;
|
---|
459 |
|
---|
460 | return rc;
|
---|
461 | }
|
---|
462 |
|
---|
463 | /**
|
---|
464 | * Check if VFS object exists on a host side.
|
---|
465 | *
|
---|
466 | * @param vnode Guest VFS vnode that corresponds to host VFS object
|
---|
467 | *
|
---|
468 | * @return 1 if exists, 0 otherwise.
|
---|
469 | */
|
---|
470 | int
|
---|
471 | vboxvfs_exist_internal(vnode_t vnode)
|
---|
472 | {
|
---|
473 | int rc;
|
---|
474 |
|
---|
475 | PSHFLSTRING pSFPath = NULL;
|
---|
476 | SHFLHANDLE handle;
|
---|
477 | uint32_t fFlags;
|
---|
478 |
|
---|
479 | vboxvfs_mount_t *pMount;
|
---|
480 | mount_t mp;
|
---|
481 |
|
---|
482 | /* Return FALSE if invalid parameter given */
|
---|
483 | AssertReturn(vnode, 0);
|
---|
484 |
|
---|
485 | mp = vnode_mount(vnode); AssertReturn(mp, EINVAL);
|
---|
486 | pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp); AssertReturn(pMount, EINVAL);
|
---|
487 |
|
---|
488 | fFlags = (vnode_isdir(vnode)) ? SHFL_CF_DIRECTORY : 0;
|
---|
489 | fFlags |= SHFL_CF_ACCESS_READ | SHFL_CF_ACT_OPEN_IF_EXISTS | SHFL_CF_ACT_FAIL_IF_NEW;
|
---|
490 |
|
---|
491 | rc = vboxvfs_guest_vnode_to_shflstring_path_internal(vnode, &pSFPath); AssertReturn(rc == 0, rc);
|
---|
492 | if (rc == 0)
|
---|
493 | {
|
---|
494 | rc = vboxvfs_open_internal(pMount, pSFPath, fFlags, &handle);
|
---|
495 | if (rc == 0)
|
---|
496 | {
|
---|
497 | rc = vboxvfs_close_internal(pMount, handle);
|
---|
498 | if (rc != 0)
|
---|
499 | {
|
---|
500 | PDEBUG("Unable to close() VBoxVFS object handle while checking if object exist on host: %d", rc);
|
---|
501 | }
|
---|
502 | }
|
---|
503 | }
|
---|
504 |
|
---|
505 | vboxvfs_put_path_internal((void **)&pSFPath);
|
---|
506 |
|
---|
507 | return (rc == 0);
|
---|
508 | }
|
---|
509 |
|
---|
510 | /**
|
---|
511 | * Convert host VFS object mode flags into guest ones.
|
---|
512 | *
|
---|
513 | * @param fHostMode Host flags
|
---|
514 | *
|
---|
515 | * @return Guest flags
|
---|
516 | */
|
---|
517 | mode_t
|
---|
518 | vboxvfs_h2g_mode_inernal(RTFMODE fHostMode)
|
---|
519 | {
|
---|
520 | mode_t fGuestMode = 0;
|
---|
521 |
|
---|
522 | fGuestMode = /* Owner */
|
---|
523 | ((fHostMode & RTFS_UNIX_IRUSR) ? S_IRUSR : 0 ) |
|
---|
524 | ((fHostMode & RTFS_UNIX_IWUSR) ? S_IWUSR : 0 ) |
|
---|
525 | ((fHostMode & RTFS_UNIX_IXUSR) ? S_IXUSR : 0 ) |
|
---|
526 | /* Group */
|
---|
527 | ((fHostMode & RTFS_UNIX_IRGRP) ? S_IRGRP : 0 ) |
|
---|
528 | ((fHostMode & RTFS_UNIX_IWGRP) ? S_IWGRP : 0 ) |
|
---|
529 | ((fHostMode & RTFS_UNIX_IXGRP) ? S_IXGRP : 0 ) |
|
---|
530 | /* Other */
|
---|
531 | ((fHostMode & RTFS_UNIX_IROTH) ? S_IROTH : 0 ) |
|
---|
532 | ((fHostMode & RTFS_UNIX_IWOTH) ? S_IWOTH : 0 ) |
|
---|
533 | ((fHostMode & RTFS_UNIX_IXOTH) ? S_IXOTH : 0 ) |
|
---|
534 | /* SUID, SGID, SVTXT */
|
---|
535 | ((fHostMode & RTFS_UNIX_ISUID) ? S_ISUID : 0 ) |
|
---|
536 | ((fHostMode & RTFS_UNIX_ISGID) ? S_ISGID : 0 ) |
|
---|
537 | ((fHostMode & RTFS_UNIX_ISTXT) ? S_ISVTX : 0 ) |
|
---|
538 | /* VFS object types */
|
---|
539 | ((RTFS_IS_FIFO(fHostMode)) ? S_IFIFO : 0 ) |
|
---|
540 | ((RTFS_IS_DEV_CHAR(fHostMode)) ? S_IFCHR : 0 ) |
|
---|
541 | ((RTFS_IS_DIRECTORY(fHostMode)) ? S_IFDIR : 0 ) |
|
---|
542 | ((RTFS_IS_DEV_BLOCK(fHostMode)) ? S_IFBLK : 0 ) |
|
---|
543 | ((RTFS_IS_FILE(fHostMode)) ? S_IFREG : 0 ) |
|
---|
544 | ((RTFS_IS_SYMLINK(fHostMode)) ? S_IFLNK : 0 ) |
|
---|
545 | ((RTFS_IS_SOCKET(fHostMode)) ? S_IFSOCK : 0 );
|
---|
546 |
|
---|
547 | return fGuestMode;
|
---|
548 | }
|
---|
549 |
|
---|
550 | /**
|
---|
551 | * Convert guest VFS object mode flags into host ones.
|
---|
552 | *
|
---|
553 | * @param fGuestMode Host flags
|
---|
554 | *
|
---|
555 | * @return Host flags
|
---|
556 | */
|
---|
557 | uint32_t
|
---|
558 | vboxvfs_g2h_mode_inernal(mode_t fGuestMode)
|
---|
559 | {
|
---|
560 | uint32_t fHostMode = 0;
|
---|
561 |
|
---|
562 | fHostMode = ((fGuestMode & FREAD) ? SHFL_CF_ACCESS_READ : 0 ) |
|
---|
563 | ((fGuestMode & FWRITE) ? SHFL_CF_ACCESS_WRITE : 0 ) |
|
---|
564 | /* skipped: O_NONBLOCK */
|
---|
565 | ((fGuestMode & O_APPEND) ? SHFL_CF_ACCESS_APPEND : 0 ) |
|
---|
566 | /* skipped: O_SYNC */
|
---|
567 | /* skipped: O_SHLOCK */
|
---|
568 | /* skipped: O_EXLOCK */
|
---|
569 | /* skipped: O_ASYNC */
|
---|
570 | /* skipped: O_FSYNC */
|
---|
571 | /* skipped: O_NOFOLLOW */
|
---|
572 | ((fGuestMode & O_CREAT) ? SHFL_CF_ACT_CREATE_IF_NEW | (!(fGuestMode & O_TRUNC) ? SHFL_CF_ACT_OPEN_IF_EXISTS : 0) : SHFL_CF_ACT_OPEN_IF_EXISTS | SHFL_CF_ACT_FAIL_IF_NEW ) |
|
---|
573 | ((fGuestMode & O_TRUNC) ? SHFL_CF_ACT_OVERWRITE_IF_EXISTS | SHFL_CF_ACCESS_WRITE : 0 );
|
---|
574 | /* skipped: O_EXCL */
|
---|
575 |
|
---|
576 | return fHostMode;
|
---|
577 | }
|
---|
578 |
|
---|
579 | /**
|
---|
580 | * Mount helper: Contruct SHFLSTRING which contains VBox share name or path.
|
---|
581 | *
|
---|
582 | * @returns Initialize string buffer on success, NULL if out of memory.
|
---|
583 | * @param pachName The string to pack in a buffer. Does not need to be
|
---|
584 | * zero terminated.
|
---|
585 | * @param cchName The length of pachName to use. RTSTR_MAX for strlen.
|
---|
586 | */
|
---|
587 | SHFLSTRING *
|
---|
588 | vboxvfs_construct_shflstring(const char *pachName, size_t cchName)
|
---|
589 | {
|
---|
590 | AssertReturn(pachName, NULL);
|
---|
591 |
|
---|
592 | if (cchName == RTSTR_MAX)
|
---|
593 | cchName = strlen(pachName);
|
---|
594 |
|
---|
595 | SHFLSTRING *pSHFLString = (SHFLSTRING *)RTMemAlloc(SHFLSTRING_HEADER_SIZE + cchName + 1);
|
---|
596 | if (pSHFLString)
|
---|
597 | {
|
---|
598 | pSHFLString->u16Length = cchName;
|
---|
599 | pSHFLString->u16Size = cchName + 1;
|
---|
600 | memcpy(pSHFLString->String.utf8, pachName, cchName);
|
---|
601 | pSHFLString->String.utf8[cchName] = '\0';
|
---|
602 |
|
---|
603 | return pSHFLString;
|
---|
604 | }
|
---|
605 | return NULL;
|
---|
606 | }
|
---|
607 |
|
---|
608 | #endif
|
---|