4.104.114.84.95
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1 | /* |
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2 | * ioctl() system call |
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3 | * |
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4 | * This routine is not defined in the POSIX 1003.1b standard but is |
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5 | * commonly supported on most UNIX and POSIX systems. |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1999. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.OARcorp.com/rtems/license.html. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #include "libio_.h" |
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18 | |
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19 | #include <unistd.h> |
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20 | |
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21 | int ioctl( |
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22 | int fd, |
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23 | int command, |
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24 | ... |
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25 | ) |
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26 | { |
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27 | va_list ap; |
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28 | rtems_status_code rc; |
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29 | rtems_libio_t *iop; |
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30 | void *buffer; |
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31 | |
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32 | rtems_libio_check_fd( fd ); |
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33 | iop = rtems_libio_iop( fd ); |
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34 | rtems_libio_check_is_open(iop); |
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35 | |
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36 | va_start(ap, command); |
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37 | |
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38 | buffer = va_arg(ap, void *); |
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39 | |
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40 | /* |
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41 | * Now process the ioctl(). |
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42 | */ |
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43 | |
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44 | if ( !iop->handlers->ioctl ) |
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45 | set_errno_and_return_minus_one( ENOTSUP ); |
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46 | |
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47 | rc = (*iop->handlers->ioctl)( iop, command, buffer ); |
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48 | |
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49 | return rc; |
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50 | } |
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