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/* |
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* linker.C: Abstraction of the dynamic linking system. |
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* Rights to this code are documented in doc/pod/license.pod. |
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* |
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* Copyright © 2005-2007 Atheme Project (http://www.atheme.org) |
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*/ |
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|
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static char const rcsid[] = "$Id: linker.C,v 1.3 2007-07-21 13:23:22 pippijn Exp $"; |
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|
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#include "atheme.h" |
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|
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#include <dlfcn.h> |
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|
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#ifdef __OpenBSD__ |
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# define RTLD_NOW RTLD_LAZY |
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#endif |
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|
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#ifndef __HPUX__ |
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# define PLATFORM_SUFFIX ".so" |
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#else |
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# define PLATFORM_SUFFIX ".sl" |
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#endif |
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|
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/* |
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* linker_open() |
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* |
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* Inputs: |
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* path to file to open |
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* |
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* Outputs: |
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* linker handle. |
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* |
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* Side Effects: |
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* a shared module is loaded into the application's memory space |
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*/ |
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void * |
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linker_open (char *path) |
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{ |
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return dlopen (path, RTLD_NOW); |
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} |
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|
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/* |
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* linker_open_ext() |
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* |
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* Inputs: |
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* path to file to open |
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* |
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* Outputs: |
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* linker handle |
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* |
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* Side Effects: |
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* the extension is appended if it's not already there. |
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* a shared module is loaded into the application's memory space |
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*/ |
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void * |
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linker_open_ext (char *path) |
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{ |
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void *handle; |
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char *buf = static_cast<char *> (smalloc (strlen (path) + 20)); |
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|
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strlcpy (buf, path, strlen (path) + 20); |
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|
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if (!strstr (buf, PLATFORM_SUFFIX)) |
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strlcat (buf, PLATFORM_SUFFIX, strlen (path) + 20); |
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|
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handle = linker_open (buf); |
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free (buf); |
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|
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return handle; |
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} |
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|
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/* |
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* linker_getsym() |
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* |
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* Inputs: |
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* linker handle, symbol to retrieve |
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* |
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* Outputs: |
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* pointer to symbol, or NULL if no symbol. |
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* |
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* Side Effects: |
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* none |
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*/ |
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void * |
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linker_getsym (void *vptr, char *sym) |
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{ |
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return dlsym (vptr, sym); |
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} |
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|
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/* |
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* linker_close() |
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* |
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* Inputs: |
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* linker handle |
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* |
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* Outputs: |
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* none |
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* |
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* Side Effects: |
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* the module is unloaded from the linker |
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*/ |
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void |
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linker_close (void *vptr) |
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{ |
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dlclose (vptr); |
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} |