1 | /* Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
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3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995. |
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4 | |
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5 | The GNU C Library is free software; you can redistribute it and/or |
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6 | modify it under the terms of the GNU Lesser General Public |
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7 | License as published by the Free Software Foundation; either |
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8 | version 2.1 of the License, or (at your option) any later version. |
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9 | |
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10 | The GNU C Library is distributed in the hope that it will be useful, |
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | Lesser General Public License for more details. |
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14 | |
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15 | You should have received a copy of the GNU Lesser General Public |
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16 | License along with the GNU C Library; if not, write to the Free |
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17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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18 | 02111-1307 USA. */ |
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19 | |
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20 | /* Modified for newlib by Jeff Johnston, June 10/2002 */ |
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21 | |
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22 | #include <sys/types.h> |
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23 | #include <sys/ipc.h> |
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24 | #include <sys/stat.h> |
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25 | |
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26 | #if !defined(_ELIX_LEVEL) || _ELIX_LEVEL >= 2 |
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27 | #define STAT stat64 |
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28 | #else |
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29 | #define STAT stat |
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30 | #endif |
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31 | |
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32 | key_t |
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33 | ftok (pathname, proj_id) |
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34 | const char *pathname; |
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35 | int proj_id; |
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36 | { |
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37 | struct STAT st; |
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38 | key_t key; |
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39 | |
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40 | if (STAT (pathname, &st) < 0) |
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41 | return (key_t) -1; |
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42 | |
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43 | key = ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) |
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44 | | ((proj_id & 0xff) << 24)); |
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45 | |
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46 | return key; |
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47 | } |
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