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0
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1 /*
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2
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3 Package: dyncall
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4 Library: dynload
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5 File: dynload/dynload_darwin.c
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6 Description: dynload module for .dylib (mach-o darwin/OS X) files
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7 License:
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8
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9 Copyright (c) 2007-2015 Olivier Chafik <olivier.chafik@gmail.com>
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10 Minor bug-fix modifications by Daniel Adler.
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11
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12 Permission to use, copy, modify, and distribute this software for any
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13 purpose with or without fee is hereby granted, provided that the above
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14 copyright notice and this permission notice appear in all copies.
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15
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16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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23
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24 */
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25
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26
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27
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28 /*
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29
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30 dynload_darwin.c
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31
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32 dynload module for .dylib (mach-o darwin/OS X) files
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33
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34 */
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35
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36
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37 #include "dynload.h"
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38 #include "dynload_alloc.h"
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39 #include <dlfcn.h>
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40 #include <string.h>
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41
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42 struct DLLib_
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43 {
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44 char* libPath;
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45 void* handle;
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46 };
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47
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48
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49 DLLib* dlLoadLibrary(const char* libPath)
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50 {
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51 void* handle;
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52 size_t len;
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53 DLLib* lib;
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54
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55 handle = dlopen(libPath, RTLD_LAZY);
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56 if (!handle)
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57 return NULL;
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58
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59
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60 lib = (DLLib*)dlAllocMem(sizeof(DLLib));
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61 lib->handle = handle;
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62 /* libPath might be null (self reference on image) [Daniel] */
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63 if (libPath != NULL) {
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64 len = strlen(libPath);
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65 lib->libPath = (char*)dlAllocMem(len + 1);
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66 strcpy(lib->libPath, libPath);
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67 lib->libPath[len] = '\0';
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68 } else {
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69 lib->libPath = NULL;
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70 }
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71 return lib;
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72 }
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73
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74 void* dlFindSymbol(DLLib* libHandle, const char* symbol)
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75 {
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76 return dlsym(libHandle && libHandle->handle ? libHandle->handle : RTLD_DEFAULT, symbol);
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77 }
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78
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79
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80 void dlFreeLibrary(DLLib* libHandle)
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81 {
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82 if (!libHandle)
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83 return;
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84
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85 dlclose(libHandle->handle);
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86 if (libHandle->libPath)
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87 dlFreeMem(libHandle->libPath);
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88 dlFreeMem(libHandle);
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89 }
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90
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