mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
b4caa85013
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3466 b3059339-0415-0410-9bf9-f77b7e298cf2
550 lines
13 KiB
C
550 lines
13 KiB
C
/*
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* Modules
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*
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* Copyright 1995 Alexandre Julliard
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*/
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#include "config.h"
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <wine/windef.h>
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#include <wine/winerror.h>
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#include <wine/heap.h>
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#include <wine/module.h>
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#include <wine/pe_image.h>
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#include <wine/debugtools.h>
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#ifdef HAVE_LIBDL
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#include <dlfcn.h>
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#include <wine/elfdll.h>
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#endif
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#include "win32.h"
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//#include "driver.h"
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//#undef TRACE
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//#define TRACE printf
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struct modref_list_t;
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typedef struct modref_list_t
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{
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WINE_MODREF* wm;
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struct modref_list_t *next;
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struct modref_list_t *prev;
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} modref_list;
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//WINE_MODREF *local_wm=NULL;
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modref_list* local_wm=NULL;
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HANDLE SegptrHeap;
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WINE_MODREF* MODULE_FindModule(LPCSTR m)
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{
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modref_list* list=local_wm;
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TRACE("Module %s request\n", m);
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if(list==NULL)
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return NULL;
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while(strcmp(m, list->wm->filename))
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{
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TRACE("%s: %x\n", list->wm->filename, list->wm->module);
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list=list->prev;
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if(list==NULL)
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return NULL;
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}
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TRACE("Resolved to %s\n", list->wm->filename);
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return list->wm;
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}
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static void MODULE_RemoveFromList(WINE_MODREF *mod)
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{
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modref_list* list=local_wm;
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if(list==0)
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return;
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if(mod==0)
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return;
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if((list->prev==NULL)&&(list->next==NULL))
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{
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free(list);
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local_wm=NULL;
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// uninstall_fs();
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return;
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}
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for(;list;list=list->prev)
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{
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if(list->wm==mod)
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{
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if(list->prev)
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list->prev->next=list->next;
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if(list->next)
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list->next->prev=list->prev;
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if(list==local_wm)
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local_wm=list->prev;
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free(list);
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return;
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}
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}
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}
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WINE_MODREF *MODULE32_LookupHMODULE(HMODULE m)
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{
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modref_list* list=local_wm;
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TRACE("Module %X request\n", m);
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if(list==NULL)
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return NULL;
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while(m!=list->wm->module)
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{
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// printf("Checking list %X wm %X module %X\n",
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// list, list->wm, list->wm->module);
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list=list->prev;
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if(list==NULL)
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return NULL;
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}
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TRACE("LookupHMODULE hit %p\n", list->wm);
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return list->wm;
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}
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/*************************************************************************
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* MODULE_InitDll
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*/
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static WIN_BOOL MODULE_InitDll( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
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{
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WIN_BOOL retv = TRUE;
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static LPCSTR typeName[] = { "PROCESS_DETACH", "PROCESS_ATTACH",
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"THREAD_ATTACH", "THREAD_DETACH" };
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assert( wm );
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/* Skip calls for modules loaded with special load flags */
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if ( ( wm->flags & WINE_MODREF_DONT_RESOLVE_REFS )
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|| ( wm->flags & WINE_MODREF_LOAD_AS_DATAFILE ) )
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return TRUE;
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TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved );
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/* Call the initialization routine */
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switch ( wm->type )
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{
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case MODULE32_PE:
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retv = PE_InitDLL( wm, type, lpReserved );
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break;
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case MODULE32_ELF:
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/* no need to do that, dlopen() already does */
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break;
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default:
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ERR("wine_modref type %d not handled.\n", wm->type );
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retv = FALSE;
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break;
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}
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/* The state of the module list may have changed due to the call
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to PE_InitDLL. We cannot assume that this module has not been
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deleted. */
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TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv );
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return retv;
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}
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/*************************************************************************
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* MODULE_DllProcessAttach
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*
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* Send the process attach notification to all DLLs the given module
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* depends on (recursively). This is somewhat complicated due to the fact that
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*
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* - we have to respect the module dependencies, i.e. modules implicitly
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* referenced by another module have to be initialized before the module
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* itself can be initialized
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*
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* - the initialization routine of a DLL can itself call LoadLibrary,
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* thereby introducing a whole new set of dependencies (even involving
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* the 'old' modules) at any time during the whole process
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*
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* (Note that this routine can be recursively entered not only directly
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* from itself, but also via LoadLibrary from one of the called initialization
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* routines.)
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*
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* Furthermore, we need to rearrange the main WINE_MODREF list to allow
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* the process *detach* notifications to be sent in the correct order.
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* This must not only take into account module dependencies, but also
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* 'hidden' dependencies created by modules calling LoadLibrary in their
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* attach notification routine.
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*
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* The strategy is rather simple: we move a WINE_MODREF to the head of the
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* list after the attach notification has returned. This implies that the
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* detach notifications are called in the reverse of the sequence the attach
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* notifications *returned*.
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*
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* NOTE: Assumes that the process critical section is held!
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*
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*/
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static WIN_BOOL MODULE_DllProcessAttach( WINE_MODREF *wm, LPVOID lpReserved )
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{
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WIN_BOOL retv = TRUE;
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int i;
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assert( wm );
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/* prevent infinite recursion in case of cyclical dependencies */
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if ( ( wm->flags & WINE_MODREF_MARKER )
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|| ( wm->flags & WINE_MODREF_PROCESS_ATTACHED ) )
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return retv;
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TRACE("(%s,%p) - START\n", wm->modname, lpReserved );
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/* Tag current MODREF to prevent recursive loop */
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wm->flags |= WINE_MODREF_MARKER;
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/* Recursively attach all DLLs this one depends on */
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/* for ( i = 0; retv && i < wm->nDeps; i++ )
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if ( wm->deps[i] )
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retv = MODULE_DllProcessAttach( wm->deps[i], lpReserved );
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*/
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/* Call DLL entry point */
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//local_wm=wm;
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if(local_wm)
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{
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local_wm->next=malloc(sizeof(modref_list));
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local_wm->next->prev=local_wm;
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local_wm->next->next=NULL;
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local_wm->next->wm=wm;
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local_wm=local_wm->next;
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}
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else
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{
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local_wm=malloc(sizeof(modref_list));
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local_wm->next=local_wm->prev=NULL;
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local_wm->wm=wm;
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}
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/* Remove recursion flag */
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wm->flags &= ~WINE_MODREF_MARKER;
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if ( retv )
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{
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retv = MODULE_InitDll( wm, DLL_PROCESS_ATTACH, lpReserved );
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if ( retv )
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wm->flags |= WINE_MODREF_PROCESS_ATTACHED;
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}
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TRACE("(%s,%p) - END\n", wm->modname, lpReserved );
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return retv;
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}
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/*************************************************************************
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* MODULE_DllProcessDetach
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*
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* Send DLL process detach notifications. See the comment about calling
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* sequence at MODULE_DllProcessAttach. Unless the bForceDetach flag
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* is set, only DLLs with zero refcount are notified.
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*/
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static void MODULE_DllProcessDetach( WINE_MODREF* wm, WIN_BOOL bForceDetach, LPVOID lpReserved )
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{
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// WINE_MODREF *wm=local_wm;
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modref_list* l = local_wm;
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wm->flags &= ~WINE_MODREF_PROCESS_ATTACHED;
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MODULE_InitDll( wm, DLL_PROCESS_DETACH, lpReserved );
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/* while (l)
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{
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modref_list* f = l;
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l = l->next;
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free(f);
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}
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local_wm = 0;*/
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}
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/***********************************************************************
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* MODULE_LoadLibraryExA (internal)
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*
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* Load a PE style module according to the load order.
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*
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* The HFILE parameter is not used and marked reserved in the SDK. I can
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* only guess that it should force a file to be mapped, but I rather
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* ignore the parameter because it would be extremely difficult to
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* integrate this with different types of module represenations.
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*
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*/
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static WINE_MODREF *MODULE_LoadLibraryExA( LPCSTR libname, HFILE hfile, DWORD flags )
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{
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DWORD err = GetLastError();
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WINE_MODREF *pwm;
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int i;
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// module_loadorder_t *plo;
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SetLastError( ERROR_FILE_NOT_FOUND );
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TRACE("Trying native dll '%s'\n", libname);
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pwm = PE_LoadLibraryExA(libname, flags);
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#ifdef HAVE_LIBDL
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if(!pwm)
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{
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TRACE("Trying ELF dll '%s'\n", libname);
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pwm=(WINE_MODREF*)ELFDLL_LoadLibraryExA(libname, flags);
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}
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#endif
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// printf("0x%08x\n", pwm);
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// break;
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if(pwm)
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{
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/* Initialize DLL just loaded */
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TRACE("Loaded module '%s' at 0x%08x, \n", libname, pwm->module);
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/* Set the refCount here so that an attach failure will */
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/* decrement the dependencies through the MODULE_FreeLibrary call. */
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pwm->refCount++;
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SetLastError( err ); /* restore last error */
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return pwm;
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}
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WARN("Failed to load module '%s'; error=0x%08lx, \n", libname, GetLastError());
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return NULL;
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}
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/***********************************************************************
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* MODULE_FreeLibrary
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*
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* NOTE: Assumes that the process critical section is held!
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*/
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static WIN_BOOL MODULE_FreeLibrary( WINE_MODREF *wm )
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{
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TRACE("(%s) - START\n", wm->modname );
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/* Recursively decrement reference counts */
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//MODULE_DecRefCount( wm );
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/* Call process detach notifications */
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MODULE_DllProcessDetach( wm, FALSE, NULL );
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PE_UnloadLibrary(wm);
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TRACE("END\n");
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return TRUE;
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}
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/***********************************************************************
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* LoadLibraryExA (KERNEL32)
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*/
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HMODULE WINAPI LoadLibraryExA(LPCSTR libname, HANDLE hfile, DWORD flags)
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{
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WINE_MODREF *wm = 0;
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char* listpath[] = { "", "", "/usr/lib/win32", "/usr/local/lib/win32", 0 };
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extern char* def_path;
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char path[512];
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char checked[2000];
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int i = -1;
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checked[0] = 0;
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if(!libname)
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return 0;
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}
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printf("Loading DLL: '%s'\n", libname);
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// if(fs_installed==0)
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// install_fs();
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while (wm == 0 && listpath[++i])
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{
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if (i < 2)
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{
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if (i == 0)
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/* check just original file name */
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strncpy(path, libname, 511);
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else
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/* check default user path */
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strncpy(path, def_path, 300);
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}
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else if (strcmp(def_path, listpath[i]))
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/* path from the list */
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strncpy(path, listpath[i], 300);
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else
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continue;
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if (i > 0)
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{
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strcat(path, "/");
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strncat(path, libname, 100);
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}
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path[511] = 0;
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wm = MODULE_LoadLibraryExA( path, hfile, flags );
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if (!wm)
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{
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if (checked[0])
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strcat(checked, ", ");
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strcat(checked, path);
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checked[1500] = 0;
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}
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}
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if ( wm )
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{
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if ( !MODULE_DllProcessAttach( wm, NULL ) )
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{
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WARN_(module)("Attach failed for module '%s', \n", libname);
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MODULE_FreeLibrary(wm);
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SetLastError(ERROR_DLL_INIT_FAILED);
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MODULE_RemoveFromList(wm);
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wm = NULL;
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}
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}
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if (!wm)
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printf("Win32 LoadLibrary failed to load: %s\n", checked);
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return wm ? wm->module : 0;
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}
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/***********************************************************************
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* LoadLibraryA (KERNEL32)
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*/
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HMODULE WINAPI LoadLibraryA(LPCSTR libname) {
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return LoadLibraryExA(libname,0,0);
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}
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/***********************************************************************
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* FreeLibrary
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*/
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WIN_BOOL WINAPI FreeLibrary(HINSTANCE hLibModule)
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{
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WIN_BOOL retv = FALSE;
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WINE_MODREF *wm;
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wm=MODULE32_LookupHMODULE(hLibModule);
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if ( !wm || !hLibModule )
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{
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SetLastError( ERROR_INVALID_HANDLE );
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return 0;
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}
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else
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retv = MODULE_FreeLibrary( wm );
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MODULE_RemoveFromList(wm);
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/* garbage... */
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if (local_wm == NULL) my_garbagecollection();
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return retv;
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}
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/***********************************************************************
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* MODULE_DecRefCount
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*
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* NOTE: Assumes that the process critical section is held!
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*/
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static void MODULE_DecRefCount( WINE_MODREF *wm )
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{
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int i;
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if ( wm->flags & WINE_MODREF_MARKER )
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return;
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if ( wm->refCount <= 0 )
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return;
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--wm->refCount;
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TRACE("(%s) refCount: %d\n", wm->modname, wm->refCount );
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if ( wm->refCount == 0 )
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{
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wm->flags |= WINE_MODREF_MARKER;
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for ( i = 0; i < wm->nDeps; i++ )
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if ( wm->deps[i] )
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MODULE_DecRefCount( wm->deps[i] );
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wm->flags &= ~WINE_MODREF_MARKER;
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}
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}
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/***********************************************************************
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* GetProcAddress (KERNEL32.257)
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*/
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FARPROC WINAPI GetProcAddress( HMODULE hModule, LPCSTR function )
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{
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return MODULE_GetProcAddress( hModule, function, TRUE );
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}
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/***********************************************************************
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* MODULE_GetProcAddress (internal)
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*/
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FARPROC MODULE_GetProcAddress(
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HMODULE hModule, /* [in] current module handle */
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LPCSTR function, /* [in] function to be looked up */
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WIN_BOOL snoop )
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{
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WINE_MODREF *wm = MODULE32_LookupHMODULE( hModule );
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// WINE_MODREF *wm=local_wm;
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FARPROC retproc;
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if (HIWORD(function))
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TRACE_(win32)("(%08lx,%s)\n",(DWORD)hModule,function);
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else
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TRACE_(win32)("(%08lx,%p)\n",(DWORD)hModule,function);
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if (!wm) {
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SetLastError(ERROR_INVALID_HANDLE);
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return (FARPROC)0;
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}
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switch (wm->type)
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{
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case MODULE32_PE:
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retproc = PE_FindExportedFunction( wm, function, snoop );
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if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
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return retproc;
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#ifdef HAVE_LIBDL
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case MODULE32_ELF:
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retproc = (FARPROC) dlsym( (void*) wm->module, function);
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if (!retproc) SetLastError(ERROR_PROC_NOT_FOUND);
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return retproc;
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#endif
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default:
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ERR("wine_modref type %d not handled.\n",wm->type);
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SetLastError(ERROR_INVALID_HANDLE);
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return (FARPROC)0;
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}
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}
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static int acounter = 0;
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void CodecAlloc(void)
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{
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acounter++;
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//printf("**************CODEC ALLOC %d\n", acounter);
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}
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void CodecRelease(void)
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{
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acounter--;
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//printf("**************CODEC RELEASE %d\n", acounter);
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if (acounter == 0)
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{
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for (;;)
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{
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modref_list* list = local_wm;
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if (!local_wm)
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break;
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//printf("CODECRELEASE %p\n", list);
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MODULE_FreeLibrary(list->wm);
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MODULE_RemoveFromList(list->wm);
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if (local_wm == NULL)
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my_garbagecollection();
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}
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}
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}
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