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92 lines
1.6 KiB
C
92 lines
1.6 KiB
C
/* $Id: dlsym.c,v 1.4 2002/10/29 04:45:30 rex Exp $
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*/
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS POSIX+ Subsystem
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* FILE: subsys/psx/lib/psxdll/dlfcn/dlsym.c
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* PURPOSE: Obtain the address of a symbol from a dlopen() object
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* PROGRAMMER: KJK::Hyperion <noog@libero.it>
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* UPDATE HISTORY:
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* 19/12/2001: Created
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*/
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#include <ddk/ntddk.h>
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#include <ntdll/rtl.h>
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#include <ntdll/ldr.h>
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#include <dlfcn.h>
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#include <psx/dlfcn.h>
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#include <psx/errno.h>
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#include <psx/debug.h>
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void *__dlsymn(void *, unsigned long int);
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void *__dlsym(void *, int, const char *, unsigned long int);
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void *dlsym(void *handle, const char *name)
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{
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return (__dlsym(handle, 1, name, 0));
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}
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void *__dlsymn(void *handle, unsigned long int ordinal)
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{
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return (__dlsym(handle, 0, 0, ordinal));
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}
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void *__dlsym(void *handle, int by_name, const char *name, unsigned long int ordinal)
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{
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struct __dlobj * pdloObject;
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void * pProcAddr;
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NTSTATUS nErrCode;
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if(handle == RTLD_NEXT)
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{
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FIXME("implement RTLD_NEXT semantics");
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return (NULL);
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}
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pdloObject = (struct __dlobj *) handle;
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if(pdloObject->global)
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{
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FIXME("implement global symbol matching");
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return (NULL);
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}
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if(by_name)
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{
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ANSI_STRING strName;
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RtlInitAnsiString(&strName, (LPSTR)name);
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nErrCode = LdrGetProcedureAddress
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(
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pdloObject->handle,
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&strName,
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0,
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(PVOID *)&pProcAddr
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);
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}
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else
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{
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nErrCode = LdrGetProcedureAddress
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(
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pdloObject->handle,
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NULL,
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ordinal,
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(PVOID *)&pProcAddr
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);
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}
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if(!NT_SUCCESS(nErrCode))
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{
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__dl_set_last_error(__status_to_errno(nErrCode));
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return (NULL);
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}
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return pProcAddr;
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}
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/* EOF */
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