| 1 | /** @file
|
|---|
| 2 | *
|
|---|
| 3 | * vboxadd -- VirtualBox Guest Additions for Linux
|
|---|
| 4 | * hgcmcall.c -- wrapper for hgcm calls from user space
|
|---|
| 5 | */
|
|---|
| 6 |
|
|---|
| 7 | /*
|
|---|
| 8 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
|
|---|
| 9 | *
|
|---|
| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 11 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 12 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 13 | * General Public License (GPL) as published by the Free Software
|
|---|
| 14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 17 | *
|
|---|
| 18 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
|
|---|
| 19 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
|
|---|
| 20 | * additional information or have any questions.
|
|---|
| 21 | */
|
|---|
| 22 |
|
|---|
| 23 | #include "the-linux-kernel.h"
|
|---|
| 24 | #include "version-generated.h"
|
|---|
| 25 |
|
|---|
| 26 | /* #define IRQ_DEBUG */
|
|---|
| 27 |
|
|---|
| 28 | #include "vboxmod.h"
|
|---|
| 29 | #include "waitcompat.h"
|
|---|
| 30 |
|
|---|
| 31 | #include <VBox/log.h>
|
|---|
| 32 | #include <iprt/assert.h>
|
|---|
| 33 |
|
|---|
| 34 |
|
|---|
| 35 | /**
|
|---|
| 36 | * Get the IOCTL structure from user space
|
|---|
| 37 | *
|
|---|
| 38 | * @returns 0 on success, Linux error code on failure
|
|---|
| 39 | * @param cParms The number of parameters to the HGCM call
|
|---|
| 40 | * @param pUser User space pointer to the data to be copied
|
|---|
| 41 | * @retval hgcmR3Ret Where to store the structure allocated on success
|
|---|
| 42 | */
|
|---|
| 43 | static int vbox_hgcm_get_r3_struct(int cParms, void *pUser, VBoxGuestHGCMCallInfo **hgcmR3Ret)
|
|---|
| 44 | {
|
|---|
| 45 | VBoxGuestHGCMCallInfo *hgcmR3;
|
|---|
| 46 |
|
|---|
| 47 | /* Allocate space for those call parameters. */
|
|---|
| 48 | hgcmR3 = kmalloc(sizeof(*hgcmR3) + cParms * sizeof(HGCMFunctionParameter), GFP_KERNEL);
|
|---|
| 49 | if (!hgcmR3)
|
|---|
| 50 | {
|
|---|
| 51 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: cannot allocate memory!\n"));
|
|---|
| 52 | return -ENOMEM;
|
|---|
| 53 | }
|
|---|
| 54 | /* Get the call parameters from user space. */
|
|---|
| 55 | if (copy_from_user(hgcmR3, pUser, sizeof(*hgcmR3) + cParms * sizeof(HGCMFunctionParameter)))
|
|---|
| 56 | {
|
|---|
| 57 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: copy_from_user failed!\n"));
|
|---|
| 58 | kfree(hgcmR3);
|
|---|
| 59 | return -EFAULT;
|
|---|
| 60 | }
|
|---|
| 61 | *hgcmR3Ret = hgcmR3;
|
|---|
| 62 | return 0;
|
|---|
| 63 | }
|
|---|
| 64 |
|
|---|
| 65 | /**
|
|---|
| 66 | * Read the IOCTL parameters from the calling user space application and repack them into
|
|---|
| 67 | * a structure in kernel space. This repacking is needed because the structure contains pointers
|
|---|
| 68 | * which will no longer be valid after it is copied from user to kernel space.
|
|---|
| 69 | *
|
|---|
| 70 | * @returns 0 on success, or a Linux error code on failure
|
|---|
| 71 | * @param hgcmR3 The user space ioctl structure, copied into kernel space
|
|---|
| 72 | * @retval hgcmR0Ret The kernel space structure set up in this function
|
|---|
| 73 | * @retval ppu8PointerDataRet A buffer storing the parameters copied from user space
|
|---|
| 74 | */
|
|---|
| 75 | static int vbox_hgcm_get_r3_params(VBoxGuestHGCMCallInfo *hgcmR3,
|
|---|
| 76 | VBoxGuestHGCMCallInfo **hgcmR0Ret,
|
|---|
| 77 | uint8_t **ppu8PointerDataRet)
|
|---|
| 78 | {
|
|---|
| 79 | VBoxGuestHGCMCallInfo *hgcmR0;
|
|---|
| 80 | uint8_t *pu8PointerData;
|
|---|
| 81 | size_t cbPointerData = 0, offPointerData = 0;
|
|---|
| 82 | unsigned i;
|
|---|
| 83 |
|
|---|
| 84 | /* Allocate the structure which we will pass to the kernel space HGCM call. */
|
|---|
| 85 | hgcmR0 = kmalloc(sizeof(*hgcmR0) + hgcmR3->cParms * sizeof(HGCMFunctionParameter),
|
|---|
| 86 | GFP_KERNEL);
|
|---|
| 87 | if (!hgcmR0)
|
|---|
| 88 | {
|
|---|
| 89 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: cannot allocate memory!\n"));
|
|---|
| 90 | return -ENOMEM;
|
|---|
| 91 | }
|
|---|
| 92 | /* Set up the structure header */
|
|---|
| 93 | hgcmR0->u32ClientID = hgcmR3->u32ClientID;
|
|---|
| 94 | hgcmR0->u32Function = hgcmR3->u32Function;
|
|---|
| 95 | hgcmR0->cParms = hgcmR3->cParms;
|
|---|
| 96 | /* Calculate the total size of pointer space. Will normally be for a single pointer */
|
|---|
| 97 | for (i = 0; i < hgcmR3->cParms; ++i)
|
|---|
| 98 | {
|
|---|
| 99 | switch (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type)
|
|---|
| 100 | {
|
|---|
| 101 | case VMMDevHGCMParmType_32bit:
|
|---|
| 102 | case VMMDevHGCMParmType_64bit:
|
|---|
| 103 | break;
|
|---|
| 104 | case VMMDevHGCMParmType_LinAddr:
|
|---|
| 105 | case VMMDevHGCMParmType_LinAddr_In:
|
|---|
| 106 | case VMMDevHGCMParmType_LinAddr_Out:
|
|---|
| 107 | cbPointerData += VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size;
|
|---|
| 108 | break;
|
|---|
| 109 | default:
|
|---|
| 110 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: unsupported or unknown parameter type (index=%d, type=%d)\n",
|
|---|
| 111 | i, VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type));
|
|---|
| 112 | kfree(hgcmR0);
|
|---|
| 113 | return -EINVAL;
|
|---|
| 114 | }
|
|---|
| 115 | }
|
|---|
| 116 | pu8PointerData = kmalloc (cbPointerData, GFP_KERNEL);
|
|---|
| 117 | /* Reconstruct the pointer parameter data in kernel space */
|
|---|
| 118 | if (pu8PointerData == NULL)
|
|---|
| 119 | {
|
|---|
| 120 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: out of memory allocating %d bytes for pointer data\n",
|
|---|
| 121 | cbPointerData));
|
|---|
| 122 | kfree(hgcmR0);
|
|---|
| 123 | return -ENOMEM;
|
|---|
| 124 | }
|
|---|
| 125 | /* Copy and translate the parameters from the user space structure to the kernel space
|
|---|
| 126 | structure. */
|
|---|
| 127 | for (i = 0; i < hgcmR3->cParms; ++i)
|
|---|
| 128 | {
|
|---|
| 129 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].type
|
|---|
| 130 | = VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type;
|
|---|
| 131 | if ( (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type == VMMDevHGCMParmType_LinAddr)
|
|---|
| 132 | || (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type
|
|---|
| 133 | == VMMDevHGCMParmType_LinAddr_In))
|
|---|
| 134 | {
|
|---|
| 135 | /* This pointer type means that we are sending data to the host or both
|
|---|
| 136 | sending and reading data. */
|
|---|
| 137 | void *pvR3LinAddr
|
|---|
| 138 | = (void *)VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.u.linearAddr;
|
|---|
| 139 | if (copy_from_user(&pu8PointerData[offPointerData],
|
|---|
| 140 | pvR3LinAddr,
|
|---|
| 141 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size))
|
|---|
| 142 | {
|
|---|
| 143 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: copy_from_user failed!\n"));
|
|---|
| 144 | kfree(hgcmR0);
|
|---|
| 145 | kfree(pu8PointerData);
|
|---|
| 146 | return -EFAULT;
|
|---|
| 147 | }
|
|---|
| 148 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.u.linearAddr
|
|---|
| 149 | = (VMMDEVHYPPTR)&pu8PointerData[offPointerData];
|
|---|
| 150 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size
|
|---|
| 151 | = VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size;
|
|---|
| 152 | offPointerData += VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size;
|
|---|
| 153 | }
|
|---|
| 154 | else if (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type
|
|---|
| 155 | == VMMDevHGCMParmType_LinAddr_Out)
|
|---|
| 156 | {
|
|---|
| 157 | /* This type of pointer means that we are reading data from the host. */
|
|---|
| 158 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.u.linearAddr
|
|---|
| 159 | = (VMMDEVHYPPTR)&pu8PointerData[offPointerData];
|
|---|
| 160 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size
|
|---|
| 161 | = VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size;
|
|---|
| 162 | offPointerData += VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size;
|
|---|
| 163 | }
|
|---|
| 164 | else
|
|---|
| 165 | {
|
|---|
| 166 | /* If it is not a pointer, then it is a 32bit or 64bit value */
|
|---|
| 167 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.value64
|
|---|
| 168 | = VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.value64;
|
|---|
| 169 | }
|
|---|
| 170 | }
|
|---|
| 171 | *hgcmR0Ret = hgcmR0;
|
|---|
| 172 | *ppu8PointerDataRet = pu8PointerData;
|
|---|
| 173 | return 0;
|
|---|
| 174 | }
|
|---|
| 175 |
|
|---|
| 176 | /**
|
|---|
| 177 | * Dump the contents of an hgcm call info structure to the back door logger
|
|---|
| 178 | *
|
|---|
| 179 | * @param hgcmR0 The structure to dump.
|
|---|
| 180 | */
|
|---|
| 181 | static void vbox_hgcm_dump_params(VBoxGuestHGCMCallInfo *hgcmR0)
|
|---|
| 182 | {
|
|---|
| 183 | #ifdef DEBUG_Michael
|
|---|
| 184 | int i;
|
|---|
| 185 |
|
|---|
| 186 | for (i = 0; i < hgcmR0->cParms; ++i)
|
|---|
| 187 | {
|
|---|
| 188 | switch(VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].type)
|
|---|
| 189 | {
|
|---|
| 190 | case VMMDevHGCMParmType_32bit:
|
|---|
| 191 | Log(("VBOXGUEST_IOCTL_HGCM_CALL: parameter %d is of type 32bit: %u\n",
|
|---|
| 192 | i, VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.value32));
|
|---|
| 193 | break;
|
|---|
| 194 | case VMMDevHGCMParmType_64bit:
|
|---|
| 195 | Log(("VBOXGUEST_IOCTL_HGCM_CALL: parameter %d is of type 64bit: %lu\n",
|
|---|
| 196 | i, VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.value64));
|
|---|
| 197 | break;
|
|---|
| 198 | case VMMDevHGCMParmType_LinAddr:
|
|---|
| 199 | Log(("VBOXGUEST_IOCTL_HGCM_CALL: parameter %d is of type LinAddr, size %u: %.*s...\n",
|
|---|
| 200 | i,
|
|---|
| 201 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size > 10 ?
|
|---|
| 202 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size : 10,
|
|---|
| 203 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.u.linearAddr,
|
|---|
| 204 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size));
|
|---|
| 205 | break;
|
|---|
| 206 | case VMMDevHGCMParmType_LinAddr_In:
|
|---|
| 207 | Log(("VBOXGUEST_IOCTL_HGCM_CALL: parameter %d is of type LinAddr_In, size %u: %.*s...\n",
|
|---|
| 208 | i,
|
|---|
| 209 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size > 10 ?
|
|---|
| 210 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size : 10,
|
|---|
| 211 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.u.linearAddr,
|
|---|
| 212 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size));
|
|---|
| 213 | break;
|
|---|
| 214 | case VMMDevHGCMParmType_LinAddr_Out:
|
|---|
| 215 | Log(("VBOXGUEST_IOCTL_HGCM_CALL: parameter %d is of type LinAddr_Out, size %u: %.*s...\n",
|
|---|
| 216 | i,
|
|---|
| 217 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size > 10 ?
|
|---|
| 218 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size : 10,
|
|---|
| 219 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.u.linearAddr,
|
|---|
| 220 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size));
|
|---|
| 221 | break;
|
|---|
| 222 | default:
|
|---|
| 223 | Log(("VBOXGUEST_IOCTL_HGCM_CALL: parameter %d is of unknown type!", i));
|
|---|
| 224 | }
|
|---|
| 225 | }
|
|---|
| 226 | #endif /* defined DEBUG_Michael */
|
|---|
| 227 | }
|
|---|
| 228 |
|
|---|
| 229 | /**
|
|---|
| 230 | * Copy the return parameters from the IOCTL call from kernel to user space and update the
|
|---|
| 231 | * user space ioctl structure with the new parameter information.
|
|---|
| 232 | *
|
|---|
| 233 | * @returns 0 on success, a Linux error code on failure
|
|---|
| 234 | * @param hgcmR3 The user space structure to be updated and copied back to user space, including
|
|---|
| 235 | * the user space addresses of the buffers for the parameters
|
|---|
| 236 | * @param hgcmR0 The kernel space structure pointing to the data to be returned
|
|---|
| 237 | */
|
|---|
| 238 | static int vbox_hgcm_return_r0_struct(VBoxGuestHGCMCallInfo *hgcmR3, void *pUser,
|
|---|
| 239 | VBoxGuestHGCMCallInfo *hgcmR0)
|
|---|
| 240 | {
|
|---|
| 241 | unsigned i;
|
|---|
| 242 |
|
|---|
| 243 | for (i = 0; i < hgcmR3->cParms; ++i)
|
|---|
| 244 | {
|
|---|
| 245 | if ( (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type == VMMDevHGCMParmType_LinAddr)
|
|---|
| 246 | || (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type
|
|---|
| 247 | == VMMDevHGCMParmType_LinAddr_Out))
|
|---|
| 248 | {
|
|---|
| 249 | /* We are sending data to the host or sending and reading. */
|
|---|
| 250 | void *pvR3LinAddr
|
|---|
| 251 | = (void *)VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.u.linearAddr;
|
|---|
| 252 | void *pvR0LinAddr
|
|---|
| 253 | = (void *)VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.u.linearAddr;
|
|---|
| 254 | if (copy_to_user(pvR3LinAddr, pvR0LinAddr,
|
|---|
| 255 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size))
|
|---|
| 256 | {
|
|---|
| 257 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: copy_to_user failed!\n"));
|
|---|
| 258 | return -EFAULT;
|
|---|
| 259 | }
|
|---|
| 260 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.Pointer.size
|
|---|
| 261 | = VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.Pointer.size;
|
|---|
| 262 | }
|
|---|
| 263 | else if (VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].type
|
|---|
| 264 | != VMMDevHGCMParmType_LinAddr_Out)
|
|---|
| 265 | {
|
|---|
| 266 | /* If it is not a pointer, then it is a 32bit or 64bit value */
|
|---|
| 267 | VBOXGUEST_HGCM_CALL_PARMS(hgcmR3)[i].u.value64
|
|---|
| 268 | = VBOXGUEST_HGCM_CALL_PARMS(hgcmR0)[i].u.value64;
|
|---|
| 269 | }
|
|---|
| 270 | }
|
|---|
| 271 | hgcmR3->result = hgcmR0->result;
|
|---|
| 272 | if (copy_to_user(pUser, hgcmR3,
|
|---|
| 273 | sizeof(*hgcmR3) + hgcmR3->cParms * sizeof(HGCMFunctionParameter)))
|
|---|
| 274 | {
|
|---|
| 275 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: copy_to_user failed!\n"));
|
|---|
| 276 | return -EFAULT;
|
|---|
| 277 | }
|
|---|
| 278 | return 0;
|
|---|
| 279 | }
|
|---|
| 280 |
|
|---|
| 281 | /**
|
|---|
| 282 | * This IOCTL wrapper allows the guest to make an HGCM call from user space. The
|
|---|
| 283 | * OS-independant part of the Guest Additions already contain code for making an
|
|---|
| 284 | * HGCM call from the guest, but this code assumes that the call is made from the
|
|---|
| 285 | * kernel's address space. So before calling it, we have to copy all parameters
|
|---|
| 286 | * to the HGCM call from user space to kernel space and reconstruct the structures
|
|---|
| 287 | * passed to the call (which include pointers to other memory) inside the kernel's
|
|---|
| 288 | * address space.
|
|---|
| 289 | *
|
|---|
| 290 | * @returns 0 on success or Linux error code on failure
|
|---|
| 291 | * @param arg User space pointer to the call data structure
|
|---|
| 292 | */
|
|---|
| 293 | int vbox_ioctl_hgcm_call(unsigned long arg, VBoxDevice *vboxDev)
|
|---|
| 294 | {
|
|---|
| 295 | VBoxGuestHGCMCallInfo callHeader, *hgcmR3, *hgcmR0;
|
|---|
| 296 | uint8_t *pu8PointerData;
|
|---|
| 297 | int rc;
|
|---|
| 298 |
|
|---|
| 299 | /* Get the call header from user space to see how many call parameters there are. */
|
|---|
| 300 | if (copy_from_user(&callHeader, (void*)arg, sizeof(callHeader)))
|
|---|
| 301 | {
|
|---|
| 302 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: copy_from_user failed!\n"));
|
|---|
| 303 | return -EFAULT;
|
|---|
| 304 | }
|
|---|
| 305 | /* Copy the ioctl structure from user to kernel space. */
|
|---|
| 306 | rc = vbox_hgcm_get_r3_struct(callHeader.cParms, (void *)arg, &hgcmR3);
|
|---|
| 307 | if (rc != 0)
|
|---|
| 308 | {
|
|---|
| 309 | return rc;
|
|---|
| 310 | }
|
|---|
| 311 | /* Copy the ioctl parameters from user to kernel space and repack the kernel space
|
|---|
| 312 | structure to point to the copied parameters. */
|
|---|
| 313 | rc = vbox_hgcm_get_r3_params(hgcmR3, &hgcmR0, &pu8PointerData);
|
|---|
| 314 | if (rc != 0)
|
|---|
| 315 | {
|
|---|
| 316 | kfree(hgcmR3);
|
|---|
| 317 | return rc;
|
|---|
| 318 | }
|
|---|
| 319 | /* Just to make sure that all that was successful, we read through the contents
|
|---|
| 320 | of the structure we just copied and print them to the log. */
|
|---|
| 321 | vbox_hgcm_dump_params(hgcmR0);
|
|---|
| 322 | /* Call the internal VBoxGuest ioctl interface with the ioctl structure we have just copied. */
|
|---|
| 323 | rc = vboxadd_cmc_call(vboxDev, VBOXGUEST_IOCTL_HGCM_CALL(0), hgcmR0);
|
|---|
| 324 | if (VBOX_FAILURE(rc))
|
|---|
| 325 | {
|
|---|
| 326 | LogRel(("VBOXGUEST_IOCTL_HGCM_CALL: internal ioctl call failed, rc=%Rrc\n", rc));
|
|---|
| 327 | rc = -RTErrConvertToErrno(rc);
|
|---|
| 328 | }
|
|---|
| 329 | else
|
|---|
| 330 | {
|
|---|
| 331 | /* Copy the return parameters back to user space and update the user space structure. */
|
|---|
| 332 | rc = vbox_hgcm_return_r0_struct(hgcmR3, (void *)arg, hgcmR0);
|
|---|
| 333 | }
|
|---|
| 334 | kfree(hgcmR3);
|
|---|
| 335 | kfree(hgcmR0);
|
|---|
| 336 | kfree(pu8PointerData);
|
|---|
| 337 | return rc;
|
|---|
| 338 | }
|
|---|
