mirror of
git://source.winehq.org/git/wine.git
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217 lines
4.4 KiB
C
217 lines
4.4 KiB
C
/*
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* Elf-dll loader functions
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*
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* Copyright 1999 Bertho A. Stultiens
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*/
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#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include "config.h"
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#include "windef.h"
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#include "global.h"
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#include "process.h"
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#include "module.h"
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#include "neexe.h"
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#include "heap.h"
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#include "wine/winbase16.h"
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#include "elfdll.h"
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#include "debugtools.h"
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#include "winerror.h"
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DEFAULT_DEBUG_CHANNEL(elfdll)
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#if defined(HAVE_DL_API)
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#include <dlfcn.h>
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/*------------------ HACKS -----------------*/
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extern DWORD fixup_imports(WINE_MODREF *wm);
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extern void dump_exports(HMODULE hModule);
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/*---------------- END HACKS ---------------*/
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char *extra_ld_library_path = NULL; /* The extra search-path set in wine.conf */
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struct elfdll_image
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{
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HMODULE pe_module_start;
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DWORD pe_module_size;
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NE_MODULE *ne_module_start;
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DWORD ne_module_size;
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};
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/****************************************************************************
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* ELFDLL_dlopen
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*
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* Wrapper for dlopen to search the EXTRA_LD_LIBRARY_PATH from wine.conf
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* manually because libdl.so caches the environment and does not accept our
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* changes.
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*/
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void *ELFDLL_dlopen(const char *libname, int flags)
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{
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char buffer[256];
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int namelen;
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void *handle;
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char *ldpath;
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/* First try the default path search of dlopen() */
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handle = dlopen(libname, flags);
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/* do NOT call dlerror() here ! (check after return) */
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if(handle)
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return handle;
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/* Now try to construct searches through our extra search-path */
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namelen = strlen(libname);
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ldpath = extra_ld_library_path;
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while(ldpath && *ldpath)
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{
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int len;
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char *cptr;
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char *from;
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from = ldpath;
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cptr = strchr(ldpath, ':');
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if(!cptr)
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{
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len = strlen(ldpath);
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ldpath = NULL;
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}
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else
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{
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len = cptr - ldpath;
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ldpath = cptr + 1;
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}
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if(len + namelen + 1 >= sizeof(buffer))
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{
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ERR("Buffer overflow! Check EXTRA_LD_LIBRARY_PATH or increase buffer size.\n");
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return NULL;
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}
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strncpy(buffer, from, len);
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if(len)
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{
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buffer[len] = '/';
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strcpy(buffer + len + 1, libname);
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}
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else
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strcpy(buffer + len, libname);
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TRACE("Trying dlopen('%s', %d)\n", buffer, flags);
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handle = dlopen(buffer, flags);
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/* do NOT call dlerror() here ! (check after return) */
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if(handle)
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return handle;
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}
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return NULL;
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}
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/****************************************************************************
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* get_sobasename (internal)
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*
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*/
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static LPSTR get_sobasename(LPCSTR path, LPSTR name)
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{
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char *cptr;
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/* Strip the path from the library name */
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if((cptr = strrchr(path, '/')))
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{
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char *cp = strrchr(cptr+1, '\\');
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if(cp && cp > cptr)
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cptr = cp;
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}
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else
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cptr = strrchr(path, '\\');
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if(!cptr)
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cptr = (char *)path; /* No '/' nor '\\' in path */
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else
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cptr++;
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strcpy(name, cptr);
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cptr = strrchr(name, '.');
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if(cptr)
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*cptr = '\0'; /* Strip extension */
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/* Convert to lower case.
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* This must be done manually because it is not sure that
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* other modules are accessible.
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*/
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for(cptr = name; *cptr; cptr++)
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*cptr = tolower(*cptr);
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return name;
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}
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/****************************************************************************
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* ELFDLL_LoadLibraryExA (internal)
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*
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* Implementation of elf-dll loading for PE modules
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*/
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WINE_MODREF *ELFDLL_LoadLibraryExA(LPCSTR path, DWORD flags)
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{
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LPVOID dlhandle;
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struct elfdll_image *image;
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char name[129];
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char soname[129];
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WINE_MODREF *wm;
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get_sobasename(path, name);
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strcpy(soname, name);
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strcat(soname, ".so");
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/* Try to open the elf-dll */
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dlhandle = ELFDLL_dlopen(soname, RTLD_LAZY);
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if(!dlhandle)
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{
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WARN("Could not load %s (%s)\n", soname, dlerror());
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SetLastError( ERROR_FILE_NOT_FOUND );
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return NULL;
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}
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/* Get the 'dllname_elfdll_image' variable */
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strcpy(soname, name);
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strcat(soname, "_elfdll_image");
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image = (struct elfdll_image *)dlsym(dlhandle, soname);
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if(!image)
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{
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ERR("Could not get elfdll image descriptor %s (%s)\n", soname, dlerror());
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dlclose(dlhandle);
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SetLastError( ERROR_BAD_FORMAT );
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return NULL;
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}
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wm = PE_CreateModule( image->pe_module_start, path, 0, -1, FALSE );
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if(!wm)
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{
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ERR("Could not create WINE_MODREF for %s\n", path);
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dlclose(dlhandle);
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SetLastError( ERROR_OUTOFMEMORY );
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return NULL;
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}
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wm->dlhandle = dlhandle;
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dump_exports(image->pe_module_start);
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return wm;
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}
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#else
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/*
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* No elfdlls possible
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* Just put stubs in here.
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*/
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WINE_MODREF *ELFDLL_LoadLibraryExA(LPCSTR libname, DWORD flags)
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{
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SetLastError( ERROR_FILE_NOT_FOUND );
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return NULL;
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}
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#endif
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