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annotate module.c @ 39:70a7bbe96b1d
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author | David Demelier <markand@malikania.fr> |
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date | Sun, 02 Oct 2011 10:55:00 +0200 |
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1 /* |
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2 * module.c -- portable functions to manipulate dynamic libraries |
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3 * |
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4 * Copyright (c) 2011, David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #include <stdio.h> |
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20 #include <stdlib.h> |
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21 |
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22 #include "module.h" |
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23 |
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24 struct module * |
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25 module_load(const char *path, int flags) |
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26 { |
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27 struct module *mod; |
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28 |
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29 if ((mod = malloc(sizeof (struct module))) == NULL) |
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30 return NULL; |
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31 |
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32 /* Flags are not supported on Windows */ |
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33 #if defined(_WIN32) || defined(__WIN32__) |
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34 (void) flags; |
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35 mod->handler = LoadLibrary(path); |
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36 #else |
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37 mod->handler = dlopen(path, flags); |
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38 #endif |
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39 |
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40 if (!(mod->handler)) { |
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41 module_free(mod); |
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42 return NULL; |
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43 } |
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44 |
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45 return mod; |
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46 } |
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47 |
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48 int |
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49 module_find(struct module *mod, const char *sym) |
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50 { |
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51 #if defined(_WIN32) || defined(__WIN32__) |
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52 mod->sym = GetProcAddress(mod->handler, sym); |
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53 #else |
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54 mod->sym = dlsym(mod->handler, sym); |
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55 #endif |
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56 |
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57 if (!(mod->sym)) |
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58 return -1; |
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59 |
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60 return 0; |
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61 } |
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62 |
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63 void |
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64 module_free(struct module *mod) |
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65 { |
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66 #if defined(_WIN32) || defined(__WIN32__) |
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67 FreeLibrary(mod->handler); |
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68 #else |
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69 dlclose(mod->handler); |
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70 #endif |
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71 |
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72 free(mod); |
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73 } |