VirtualBox

Changeset 60390 in vbox


Ignore:
Timestamp:
Apr 8, 2016 9:17:34 AM (8 years ago)
Author:
vboxsync
Message:

Runtime/linux/sysfs: Correct format string attributes and introduce new methods to write to sysfs files

Location:
trunk
Files:
3 edited

Legend:

Unmodified
Added
Removed

  • trunk/include/iprt/linux/sysfs.h

    r60373 r60390  
    8484
    8585/**
     86 * Opens a sysfs file for reading.
     87 *
     88 * @returns IPRT status code.
     89 * @param   phFile      Where to store the file handle on success.
     90 * @param   pszFormat   The name format, either absolute or relative to "/sys/".
     91 * @param   va          The format args.
     92 *
     93 * @note Close the file using RTFileClose().
     94 */
     95RTDECL(int) RTLinuxSysFsOpenV(PRTFILE phFile, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(2, 0);
     96
     97/**
     98 * Opens a sysfs file - extended version.
     99 *
     100 * @returns IPRT status code.
     101 * @param   phFile      Where to store the file handle on success.
     102 * @param   fOpen       Open flags, see RTFileOpen().
     103 * @param   pszFormat   The name format, either absolute or relative to "/sys/".
     104 * @param   va          The format args.
     105 */
     106RTDECL(int) RTLinuxSysFsOpenExV(PRTFILE phFile, uint64_t fOpen, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     107
     108/**
    86109 * Opens a sysfs file.
    87110 *
    … …  
    89112 * @param   phFile      Where to store the file handle on success.
    90113 * @param   pszFormat   The name format, either absolute or relative to "/sys/".
    91  * @param   va          The format args.
     114 * @param   ...         The format args.
    92115 *
    93116 * @note Close the file using RTFileClose().
    94117 */
    95 RTDECL(int) RTLinuxSysFsOpenV(PRTFILE phFile, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(1, 0);
    96 
    97 /**
    98  * Opens a sysfs file.
     118RTDECL(int) RTLinuxSysFsOpen(PRTFILE phFile, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(2, 3);
     119
     120/**
     121 * Opens a sysfs file - extended version.
    99122 *
    100123 * @returns IPRT status code.
    101124 * @param   phFile      Where to store the file handle on success.
     125 * @param   fOpen       Open flags, see RTFileOpen().
    102126 * @param   pszFormat   The name format, either absolute or relative to "/sys/".
    103127 * @param   ...         The format args.
    104  *
    105  * @note Close the file using RTFileClose().
    106  */
    107 RTDECL(int) RTLinuxSysFsOpen(PRTFILE phFile, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(1, 2);
     128 */
     129RTDECL(int) RTLinuxSysFsOpenEx(PRTFILE phFile, uint64_t fOpen, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
    108130
    109131/**
    … …  
    119141
    120142/**
     143 * Writes a string to a file opened with RTLinuxSysFsOpenEx or RTLinuxSysFsOpenExV for writing.
     144 *
     145 * @returns IPRT status code.
     146 * @param   hFile       The file descriptor returned by RTLinuxSysFsOpenEx or RTLinuxSysFsOpenExV.
     147 * @param   pszBuf      The string to write.
     148 * @param   cchBuf      The string length without zero terminator - if 0 is given
     149 *                      the string length is determined before writing.
     150 * @param   pcchWritten Where to store the amount of characters written on success - optional.
     151 */
     152RTDECL(int) RTLinuxSysFsWriteStr(RTFILE hFile, const char *pszBuf, size_t cchBuf, size_t *pcchWritten);
     153
     154/**
    121155 * Reads the remainder of a file opened with RTLinuxSysFsOpen or
    122156 * RTLinuxSysFsOpenV.
    … …  
    131165
    132166/**
     167 * Writes the given buffer to a file opened with RTLinuxSysFsOpenEx or
     168 * RTLinuxSysFsOpenExV.
     169 *
     170 * @returns IPRT status code.
     171 * @param   hFile       The file descriptor returned by RTLinuxSysFsOpenEx or RTLinuxSysFsOpenExV.
     172 * @param   pvBuf       The data to write.
     173 * @param   cbBuf       The size of the buffer.
     174 * @param   pcbWritten  Where to return the number of bytes read.  Optional.
     175 */
     176RTDECL(int) RTLinuxSysFsWriteFile(RTFILE hFile, void *pvBuf, size_t cbBuf, size_t *pcbWritten);
     177
     178/**
    133179 * Reads a number from a sysfs file.
    134180 *
    … …  
    139185 * @param   va          Format args.
    140186 */
    141 RTDECL(int) RTLinuxSysFsReadIntFileV(unsigned uBase, int64_t *pi64, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(2, 0);
     187RTDECL(int) RTLinuxSysFsReadIntFileV(unsigned uBase, int64_t *pi64, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
    142188
    143189/**
    … …  
    150196 * @param   ...         Format args.
    151197 */
    152 RTDECL(int) RTLinuxSysFsReadIntFile(unsigned uBase, int64_t *pi64, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(2, 3);
     198RTDECL(int) RTLinuxSysFsReadIntFile(unsigned uBase, int64_t *pi64, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
     199
     200/**
     201 * Writes an unsigned 8-bit number to a sysfs file.
     202 *
     203 * @returns IPRT status code.
     204 * @param   uBase       The base format to write the number. Passing 16 here for
     205 *                      example writes the number as a hexadecimal string with 0x prepended.
     206 * @param   u8          The number to write.
     207 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     208 * @param   va          Format args.
     209 */
     210RTDECL(int) RTLinuxSysFsWriteU8FileV(unsigned uBase, uint8_t u8, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     211
     212/**
     213 * Writes an unsigned 8-bit number to a sysfs file.
     214 *
     215 * @returns IPRT status code.
     216 * @param   uBase       The base format to write the number. Passing 16 here for
     217 *                      example writes the number as a hexadecimal string with 0x prepended.
     218 * @param   u8          The number to write.
     219 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     220 * @param   ...         Format args.
     221 */
     222RTDECL(int) RTLinuxSysFsWriteU8File(unsigned uBase, uint8_t u8, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
     223
     224/**
     225 * Writes an unsigned 16-bit number to a sysfs file.
     226 *
     227 * @returns IPRT status code.
     228 * @param   uBase       The base format to write the number. Passing 16 here for
     229 *                      example writes the number as a hexadecimal string with 0x prepended.
     230 * @param   u16         The number to write.
     231 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     232 * @param   va          Format args.
     233 */
     234RTDECL(int) RTLinuxSysFsWriteU16FileV(unsigned uBase, uint16_t u16, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     235
     236/**
     237 * Writes an unsigned 16-bit number to a sysfs file.
     238 *
     239 * @returns IPRT status code.
     240 * @param   uBase       The base format to write the number. Passing 16 here for
     241 *                      example writes the number as a hexadecimal string with 0x prepended.
     242 * @param   u16         The number to write.
     243 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     244 * @param   ...         Format args.
     245 */
     246RTDECL(int) RTLinuxSysFsWriteU16File(unsigned uBase, uint16_t u16, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
     247
     248/**
     249 * Writes an unsigned 32-bit number to a sysfs file.
     250 *
     251 * @returns IPRT status code.
     252 * @param   uBase       The base format to write the number. Passing 16 here for
     253 *                      example writes the number as a hexadecimal string with 0x prepended.
     254 * @param   u32         The number to write.
     255 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     256 * @param   va          Format args.
     257 */
     258RTDECL(int) RTLinuxSysFsWriteU32FileV(unsigned uBase, uint32_t u32, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     259
     260/**
     261 * Writes an unsigned 8-bit number to a sysfs file.
     262 *
     263 * @returns IPRT status code.
     264 * @param   uBase       The base format to write the number. Passing 16 here for
     265 *                      example writes the number as a hexadecimal string with 0x prepended.
     266 * @param   u32         The number to write.
     267 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     268 * @param   ...         Format args.
     269 */
     270RTDECL(int) RTLinuxSysFsWriteU32File(unsigned uBase, uint32_t u32, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
     271
     272/**
     273 * Writes an unsigned 64-bit number to a sysfs file.
     274 *
     275 * @returns IPRT status code.
     276 * @param   uBase       The base format to write the number. Passing 16 here for
     277 *                      example writes the number as a hexadecimal string with 0x prepended.
     278 * @param   u64         The number to write.
     279 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     280 * @param   va          Format args.
     281 */
     282RTDECL(int) RTLinuxSysFsWriteU64FileV(unsigned uBase, uint64_t u64, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     283
     284/**
     285 * Writes an unsigned 8-bit number to a sysfs file.
     286 *
     287 * @returns IPRT status code.
     288 * @param   uBase       The base format to write the number. Passing 16 here for
     289 *                      example writes the number as a hexadecimal string with 0x prepended.
     290 * @param   u64         The number to write.
     291 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     292 * @param   ...         Format args.
     293 */
     294RTDECL(int) RTLinuxSysFsWriteU64File(unsigned uBase, uint32_t u64, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
    153295
    154296/**
    … …  
    160302 * @param   va          Format args.
    161303 */
    162 RTDECL(int) RTLinuxSysFsReadDevNumFileV(dev_t *pDevNum, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(1, 0);
     304RTDECL(int) RTLinuxSysFsReadDevNumFileV(dev_t *pDevNum, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(2, 0);
    163305
    164306/**
    … …  
    170312 * @param   ...         Format args.
    171313 */
    172 RTDECL(int) RTLinuxSysFsReadDevNumFile(dev_t *pDevNum, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(1, 2);
     314RTDECL(int) RTLinuxSysFsReadDevNumFile(dev_t *pDevNum, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(2, 3);
    173315
    174316/**
    … …  
    184326 * @param   va          Format args.
    185327 */
    186 RTDECL(int) RTLinuxSysFsReadStrFileV(char *pszBuf, size_t cchBuf, size_t *pcchRead, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     328RTDECL(int) RTLinuxSysFsReadStrFileV(char *pszBuf, size_t cchBuf, size_t *pcchRead, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(4, 0);
    187329
    188330/**
    … …  
    198340 * @param   ...         Format args.
    199341 */
    200 RTDECL(int) RTLinuxSysFsReadStrFile(char *pszBuf, size_t cchBuf, size_t *pcchRead, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
     342RTDECL(int) RTLinuxSysFsReadStrFile(char *pszBuf, size_t cchBuf, size_t *pcchRead, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(4, 5);
     343
     344/**
     345 * Writes a string to a sysfs file.
     346 *
     347 * @returns IPRT status code.
     348 * @param   pszBuf      The string to write.
     349 * @param   cchBuf      The size of the buffer pointed to by @a pszBuf.
     350 * @param   pcchWritten Where to store the amount of characters written on success - optional.
     351 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     352 * @param   va          Format args.
     353 */
     354RTDECL(int) RTLinuxSysFsWriteStrFileV(const char *pszBuf, size_t cchBuf, size_t *pcchWritten, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(4, 0);
     355
     356/**
     357 * Writes a string to a sysfs file.
     358 *
     359 * @returns IPRT status code.
     360 * @param   pszBuf      The string to write.
     361 * @param   cchBuf      The size of the buffer pointed to by @a pszBuf.
     362 * @param   pcchWritten Where to store the amount of characters written on success - optional.
     363 * @param   pszFormat   The filename format, either absolute or relative to "/sys/".
     364 * @param   ...         Format args.
     365 */
     366RTDECL(int) RTLinuxSysFsReadStrFile(char *pszBuf, size_t cchBuf, size_t *pcchWritten, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(4, 5);
    201367
    202368/**
    … …  
    216382 * @param   va           Format args.
    217383 */
    218 RTDECL(int) RTLinuxSysFsGetLinkDestV(char *pszBuf, size_t cchBuf, size_t *pchBuf, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(3, 0);
     384RTDECL(int) RTLinuxSysFsGetLinkDestV(char *pszBuf, size_t cchBuf, size_t *pchBuf, const char *pszFormat, va_list va) RT_IPRT_FORMAT_ATTR(4, 0);
    219385
    220386/**
    … …  
    234400 * @param   ...         Format args.
    235401 */
    236 RTDECL(int) RTLinuxSysFsGetLinkDest(char *pszBuf, size_t cchBuf, size_t *pchBuf, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
     402RTDECL(int) RTLinuxSysFsGetLinkDest(char *pszBuf, size_t cchBuf, size_t *pchBuf, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(4, 5);
    237403
    238404/**

  • trunk/include/iprt/mangling.h

    r60373 r60390  
    997997# define RTLinuxSysFsExists                             RT_MANGLER(RTLinuxSysFsExists)
    998998# define RTLinuxSysFsExistsEx                           RT_MANGLER(RTLinuxSysFsExistsEx)
    999 # define RTLinuxSysFsExistsExV                           RT_MANGLER(RTLinuxSysFsExistsExV)
     999# define RTLinuxSysFsExistsExV                          RT_MANGLER(RTLinuxSysFsExistsExV)
    10001000# define RTLinuxSysFsExistsV                            RT_MANGLER(RTLinuxSysFsExistsV)
    10011001# define RTLinuxSysFsGetLinkDest                        RT_MANGLER(RTLinuxSysFsGetLinkDest)
    10021002# define RTLinuxSysFsGetLinkDestV                       RT_MANGLER(RTLinuxSysFsGetLinkDestV)
    10031003# define RTLinuxSysFsOpen                               RT_MANGLER(RTLinuxSysFsOpen)
     1004# define RTLinuxSysFsOpenEx                             RT_MANGLER(RTLinuxSysFsOpenEx)
     1005# define RTLinuxSysFsOpenExV                            RT_MANGLER(RTLinuxSysFsOpenExV)
    10041006# define RTLinuxSysFsOpenV                              RT_MANGLER(RTLinuxSysFsOpenV)
    10051007# define RTLinuxSysFsReadDevNumFile                     RT_MANGLER(RTLinuxSysFsReadDevNumFile)
    … …  
    10111013# define RTLinuxSysFsReadStrFile                        RT_MANGLER(RTLinuxSysFsReadStrFile)
    10121014# define RTLinuxSysFsReadStrFileV                       RT_MANGLER(RTLinuxSysFsReadStrFileV)
     1015# define RTLinuxSysFsWriteFile                          RT_MANGLER(RTLinuxSysFsWriteFile)
     1016# define RTLinuxSysFsWriteStr                           RT_MANGLER(RTLinuxSysFsWriteStr)
     1017# define RTLinuxSysFsWriteStrFile                       RT_MANGLER(RTLinuxSysFsWriteStrFile)
     1018# define RTLinuxSysFsWriteStrFileV                      RT_MANGLER(RTLinuxSysFsWriteStrFileV)
     1019# define RTLinuxSysFsWriteU8File                        RT_MANGLER(RTLinuxSysFsWriteU8File)
     1020# define RTLinuxSysFsWriteU8FileV                       RT_MANGLER(RTLinuxSysFsWriteU8FileV)
     1021# define RTLinuxSysFsWriteU16File                       RT_MANGLER(RTLinuxSysFsWriteU16File)
     1022# define RTLinuxSysFsWriteU16FileV                      RT_MANGLER(RTLinuxSysFsWriteU16FileV)
     1023# define RTLinuxSysFsWriteU32File                       RT_MANGLER(RTLinuxSysFsWriteU32File)
     1024# define RTLinuxSysFsWriteU32FileV                      RT_MANGLER(RTLinuxSysFsWriteU32FileV)
     1025# define RTLinuxSysFsWriteU64File                       RT_MANGLER(RTLinuxSysFsWriteU64File)
     1026# define RTLinuxSysFsWriteU64FileV                      RT_MANGLER(RTLinuxSysFsWriteU64FileV)
    10131027# define RTLocalIpcServerCreate                         RT_MANGLER(RTLocalIpcServerCreate)
    10141028# define RTLocalIpcServerDestroy                        RT_MANGLER(RTLocalIpcServerDestroy)

  • trunk/src/VBox/Runtime/r3/linux/sysfs.cpp

    r60373 r60390  
    192192
    193193
     194RTDECL(int) RTLinuxSysFsOpenExV(PRTFILE phFile, uint64_t fOpen, const char *pszFormat, va_list va)
     195{
     196    /*
     197     * Construct the filename and call open.
     198     */
     199    char szFilename[RTPATH_MAX];
     200    int rc = rtLinuxSysFsConstructPath(szFilename, sizeof(szFilename), pszFormat, va);
     201    if (RT_SUCCESS(rc))
     202        rc = RTFileOpen(phFile, szFilename, fOpen);
     203    return rc;
     204}
     205
     206
    194207RTDECL(int) RTLinuxSysFsOpen(PRTFILE phFile, const char *pszFormat, ...)
    195208{
    … …  
    197210    va_start(va, pszFormat);
    198211    int rc = RTLinuxSysFsOpenV(phFile, pszFormat, va);
     212    va_end(va);
     213    return rc;
     214}
     215
     216
     217RTDECL(int) RTLinuxSysFsOpenEx(PRTFILE phFile, uint64_t fOpen, const char *pszFormat, ...)
     218{
     219    va_list va;
     220    va_start(va, pszFormat);
     221    int rc = RTLinuxSysFsOpenExV(phFile, fOpen, pszFormat, va);
    199222    va_end(va);
    200223    return rc;
    … …  
    213236
    214237    return rc;
     238}
     239
     240
     241RTDECL(int) RTLinuxSysFsWriteStr(RTFILE hFile, const char *pszBuf, size_t cchBuf, size_t *pcchWritten)
     242{
     243    if (!cchBuf)
     244        cchBuf = strlen(pszBuf);
     245    return RTFileWrite(hFile, pszBuf, cchBuf, pcchWritten);
    215246}
    216247
    … …  
    247278
    248279
     280RTDECL(int) RTLinuxSysFsWriteFile(RTFILE hFile, void *pvBuf, size_t cbBuf, size_t *pcbWritten)
     281{
     282    return RTFileWrite(hFile, pvBuf, cbBuf, pcbWritten);
     283}
     284
     285
    249286RTDECL(int) RTLinuxSysFsReadIntFileV(unsigned uBase, int64_t *pi64, const char *pszFormat, va_list va)
    250287{
    … …  
    284321    va_start(va, pszFormat);
    285322    int rc = RTLinuxSysFsReadIntFileV(uBase, pi64, pszFormat, va);
     323    va_end(va);
     324    return rc;
     325}
     326
     327
     328RTDECL(int) RTLinuxSysFsWriteU8FileV(unsigned uBase, uint8_t u8, const char *pszFormat, va_list va)
     329{
     330    return RTLinuxSysFsWriteU64FileV(uBase, u8, pszFormat, va);
     331}
     332
     333
     334RTDECL(int) RTLinuxSysFsWriteU8File(unsigned uBase, uint8_t u8, const char *pszFormat, ...)
     335{
     336    va_list va;
     337    va_start(va, pszFormat);
     338    int rc = RTLinuxSysFsWriteU64FileV(uBase, u8, pszFormat, va);
     339    va_end(va);
     340    return rc;
     341}
     342
     343
     344RTDECL(int) RTLinuxSysFsWriteU16FileV(unsigned uBase, uint16_t u16, const char *pszFormat, va_list va)
     345{
     346    return RTLinuxSysFsWriteU64FileV(uBase, u16, pszFormat, va);
     347}
     348
     349
     350RTDECL(int) RTLinuxSysFsWriteU16File(unsigned uBase, uint16_t u16, const char *pszFormat, ...)
     351{
     352    va_list va;
     353    va_start(va, pszFormat);
     354    int rc = RTLinuxSysFsWriteU64FileV(uBase, u16, pszFormat, va);
     355    va_end(va);
     356    return rc;
     357}
     358
     359
     360RTDECL(int) RTLinuxSysFsWriteU32FileV(unsigned uBase, uint32_t u32, const char *pszFormat, va_list va)
     361{
     362    return RTLinuxSysFsWriteU64FileV(uBase, u32, pszFormat, va);
     363}
     364
     365
     366RTDECL(int) RTLinuxSysFsWriteU32File(unsigned uBase, uint32_t u32, const char *pszFormat, ...)
     367{
     368    va_list va;
     369    va_start(va, pszFormat);
     370    int rc = RTLinuxSysFsWriteU64FileV(uBase, u32, pszFormat, va);
     371    va_end(va);
     372    return rc;
     373}
     374
     375
     376RTDECL(int) RTLinuxSysFsWriteU64FileV(unsigned uBase, uint64_t u64, const char *pszFormat, va_list va)
     377{
     378    RTFILE hFile;
     379
     380    const char *pszFmt = NULL;
     381    switch (uBase)
     382    {
     383        case 8:
     384            pszFmt = "%#llo";
     385            break;
     386        case 10:
     387            pszFmt = "%llu";
     388            break;
     389        case 16:
     390            pszFmt = "%#llx";
     391            break;
     392        default:
     393            return VERR_INVALID_PARAMETER;
     394    }
     395
     396    int rc = RTLinuxSysFsOpenV(&hFile, pszFormat, va);
     397    if (RT_SUCCESS(rc))
     398    {
     399        char szNum[128];
     400        size_t cchNum = RTStrPrintf(szNum, sizeof(szNum), pszFmt, u64);
     401        if (cchNum > 0)
     402        {
     403            size_t cbWritten = 0;
     404            rc = RTLinuxSysFsWriteStr(hFile, &szNum[0], cchNum, &cbWritten);
     405            if (   RT_SUCCESS(rc)
     406                && cbWritten != cchNum)
     407                rc = VERR_BUFFER_OVERFLOW;
     408        }
     409        else
     410            rc = VERR_INVALID_PARAMETER;
     411
     412        RTFileClose(hFile);
     413    }
     414
     415    return rc;
     416}
     417
     418
     419RTDECL(int) RTLinuxSysFsWriteU64File(unsigned uBase, uint32_t u64, const char *pszFormat, ...)
     420{
     421    va_list va;
     422    va_start(va, pszFormat);
     423    int rc = RTLinuxSysFsWriteU64FileV(uBase, u64, pszFormat, va);
    286424    va_end(va);
    287425    return rc;
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