xenocara/xserver/hw/xfree86/loader/loader.c

186 lines
5.6 KiB
C
Raw Normal View History

2006-11-26 11:13:41 -07:00
/*
* Copyright 1995-1998 by Metro Link, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Metro Link, Inc. not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Metro Link, Inc. makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* METRO LINK, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL METRO LINK, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <string.h>
#include "os.h"
#include "loader.h"
#include "loaderProcs.h"
2011-11-05 07:32:40 -06:00
#ifdef HAVE_DLFCN_H
2006-11-26 11:13:41 -07:00
2011-11-05 07:32:40 -06:00
#include <dlfcn.h>
#include <X11/Xos.h>
2011-11-05 07:32:40 -06:00
#else
#error i have no dynamic linker and i must scream
#endif
2006-11-26 11:13:41 -07:00
#ifndef XORG_NO_SDKSYMS
2011-11-05 07:32:40 -06:00
extern void *xorg_symbols[];
#endif
void
LoaderInit(void)
{
#ifndef XORG_NO_SDKSYMS
LogMessageVerb(X_INFO, 2, "Loader magic: %p\n", (void *) xorg_symbols);
#endif
LogMessageVerb(X_INFO, 2, "Module ABI versions:\n");
LogWrite(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC,
GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion),
GET_ABI_MINOR(LoaderVersionInfo.ansicVersion));
LogWrite(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV,
GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion),
GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion));
LogWrite(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT,
GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion),
GET_ABI_MINOR(LoaderVersionInfo.xinputVersion));
LogWrite(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION,
GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion),
GET_ABI_MINOR(LoaderVersionInfo.extensionVersion));
2006-11-26 11:13:41 -07:00
}
/* Public Interface to the loader. */
2011-11-05 07:32:40 -06:00
void *
LoaderOpen(const char *module, int *errmaj)
2006-11-26 11:13:41 -07:00
{
2011-11-05 07:32:40 -06:00
void *ret;
2006-11-26 11:13:41 -07:00
#if defined(DEBUG)
ErrorF("LoaderOpen(%s)\n", module);
#endif
LogMessage(X_INFO, "Loading %s\n", module);
2006-11-26 11:13:41 -07:00
if (!(ret = dlopen(module, RTLD_LAZY | RTLD_GLOBAL))) {
LogMessage(X_ERROR, "Failed to load %s: %s\n", module, dlerror());
if (errmaj)
*errmaj = LDR_NOLOAD;
return NULL;
2006-11-26 11:13:41 -07:00
}
2011-11-05 07:32:40 -06:00
return ret;
2006-11-26 11:13:41 -07:00
}
void *
2011-11-05 07:32:40 -06:00
LoaderSymbol(const char *name)
2006-11-26 11:13:41 -07:00
{
2011-11-05 07:32:40 -06:00
static void *global_scope = NULL;
void *p;
2006-11-26 11:13:41 -07:00
2011-11-05 07:32:40 -06:00
p = dlsym(RTLD_DEFAULT, name);
if (p != NULL)
return p;
2006-11-26 11:13:41 -07:00
2011-11-05 07:32:40 -06:00
if (!global_scope)
global_scope = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL);
2006-11-26 11:13:41 -07:00
2011-11-05 07:32:40 -06:00
if (global_scope)
return dlsym(global_scope, name);
2006-11-26 11:13:41 -07:00
2011-11-05 07:32:40 -06:00
return NULL;
}
2006-11-26 11:13:41 -07:00
void *
LoaderSymbolFromModule(void *handle, const char *name)
{
return dlsym(handle, name);
}
2011-11-05 07:32:40 -06:00
void
LoaderUnload(const char *name, void *handle)
{
LogMessageVerbSigSafe(X_INFO, 1, "Unloading %s\n", name);
2011-11-05 07:32:40 -06:00
if (handle)
dlclose(handle);
2006-11-26 11:13:41 -07:00
}
unsigned long LoaderOptions = 0;
void
LoaderSetOptions(unsigned long opts)
{
LoaderOptions |= opts;
}
Bool
LoaderShouldIgnoreABI(void)
{
return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0;
}
int
2006-11-26 11:13:41 -07:00
LoaderGetABIVersion(const char *abiclass)
{
struct {
const char *name;
int version;
} classes[] = {
{ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion},
{ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion},
{ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion},
{ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion},
{NULL, 0}
2006-11-26 11:13:41 -07:00
};
int i;
for (i = 0; classes[i].name; i++) {
if (!strcmp(classes[i].name, abiclass)) {
2006-11-26 11:13:41 -07:00
return classes[i].version;
}
}
return 0;
}