1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup rtems_bsd_rtems |
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5 | * |
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6 | * @brief TODO. |
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7 | * |
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8 | * File origin from FreeBSD 'lib/libc/gen/sysctlnametomib.c'. |
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9 | */ |
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10 | |
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11 | /* |
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12 | * Copyright 2001 The FreeBSD Project. All Rights Reserved. |
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13 | * |
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14 | * Redistribution and use in source and binary forms, with or without |
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15 | * modification, are permitted provided that the following conditions |
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16 | * are met: |
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17 | * |
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18 | * 1. Redistributions of source code must retain the above copyright |
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19 | * notice, this list of conditions and the following disclaimer. |
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20 | * 2. Redistributions in binary form must reproduce the above copyright |
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21 | * notice, this list of conditions and the following disclaimer in the |
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22 | * documentation and/or other materials provided with the distribution. |
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23 | * |
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24 | * THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT ``AS IS'' AND ANY |
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25 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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26 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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27 | * DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT BE LIABLE FOR |
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28 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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34 | * SUCH DAMAGE. |
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35 | */ |
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36 | |
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37 | #include <machine/rtems-bsd-kernel-space.h> |
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38 | #include <machine/rtems-bsd-syscall-api.h> |
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39 | |
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40 | #include <sys/cdefs.h> |
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41 | __FBSDID("$FreeBSD$"); |
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42 | |
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43 | #include <sys/types.h> |
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44 | #include <sys/sysctl.h> |
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45 | #include <string.h> |
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46 | |
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47 | /* |
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48 | * This function uses a presently undocumented interface to the kernel |
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49 | * to walk the tree and get the type so it can print the value. |
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50 | * This interface is under work and consideration, and should probably |
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51 | * be killed with a big axe by the first person who can find the time. |
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52 | * (be aware though, that the proper interface isn't as obvious as it |
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53 | * may seem, there are various conflicting requirements. |
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54 | */ |
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55 | int |
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56 | sysctlnametomib(const char *name, int *mibp, size_t *sizep) |
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57 | { |
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58 | int oid[2]; |
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59 | int error; |
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60 | |
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61 | oid[0] = 0; |
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62 | oid[1] = 3; |
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63 | |
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64 | *sizep *= sizeof(int); |
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65 | error = sysctl(oid, 2, mibp, sizep, name, strlen(name)); |
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66 | *sizep /= sizeof(int); |
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67 | return (error); |
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68 | } |
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