4.104.114.84.95
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1 | /* |
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2 | * fstat() - POSIX 1003.1b 5.6.2 - Get File Status |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1999. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.OARcorp.com/rtems/license.html. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <sys/stat.h> |
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15 | #include <unistd.h> |
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16 | #include <string.h> |
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17 | |
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18 | #include "libio_.h" |
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19 | |
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20 | int fstat( |
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21 | int fd, |
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22 | struct stat *sbuf |
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23 | ) |
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24 | { |
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25 | rtems_libio_t *iop; |
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26 | |
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27 | /* |
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28 | * Check to see if we were passed a valid pointer. |
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29 | */ |
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30 | |
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31 | if ( !sbuf ) |
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32 | set_errno_and_return_minus_one( EFAULT ); |
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33 | |
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34 | /* |
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35 | * Now process the stat() request. |
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36 | */ |
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37 | |
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38 | iop = rtems_libio_iop( fd ); |
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39 | rtems_libio_check_fd( fd ); |
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40 | rtems_libio_check_is_open(iop); |
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41 | |
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42 | if ( !iop->handlers ) |
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43 | set_errno_and_return_minus_one( EBADF ); |
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44 | |
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45 | if ( !iop->handlers->fstat ) |
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46 | set_errno_and_return_minus_one( ENOTSUP ); |
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47 | |
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48 | /* |
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49 | * Zero out the stat structure so the various support |
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50 | * versions of stat don't have to. |
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51 | */ |
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52 | memset( sbuf, 0, sizeof(struct stat) ); |
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53 | |
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54 | return (*iop->handlers->fstat)( &iop->pathinfo, sbuf ); |
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55 | } |
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56 | |
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57 | /* |
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58 | * _fstat_r |
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59 | * |
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60 | * This is the Newlib dependent reentrant version of fstat(). |
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61 | */ |
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62 | |
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63 | #if defined(RTEMS_NEWLIB) |
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64 | |
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65 | #include <reent.h> |
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66 | |
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67 | int _fstat_r( |
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68 | struct _reent *ptr, |
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69 | int fd, |
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70 | struct stat *buf |
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71 | ) |
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72 | { |
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73 | return fstat( fd, buf ); |
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74 | } |
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75 | #endif |
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