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/*
* 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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdarg.h>
#include "os.h"
#include "loader.h"
#include "loaderProcs.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "compiler.h"
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#include <X11/Xos.h>
#if defined(DL_LAZY)
#define DLOPEN_LAZY DL_LAZY
#elif defined(RTLD_LAZY)
#define DLOPEN_LAZY RTLD_LAZY
#elif defined(__FreeBSD__)
#define DLOPEN_LAZY 1
#else
#define DLOPEN_LAZY 0
#endif
#if defined(LD_GLOBAL)
#define DLOPEN_GLOBAL LD_GLOBAL
#elif defined(RTLD_GLOBAL)
#define DLOPEN_GLOBAL RTLD_GLOBAL
#else
#define DLOPEN_GLOBAL 0
#endif
#else
#error i have no dynamic linker and i must scream
#endif
extern void *xorg_symbols[];
void
LoaderInit(void)
{
xf86MsgVerb(X_INFO, 2, "Loader magic: %p\n", (void *) xorg_symbols);
xf86MsgVerb(X_INFO, 2, "Module ABI versions:\n");
xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC,
GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion),
GET_ABI_MINOR(LoaderVersionInfo.ansicVersion));
xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV,
GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion),
GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion));
xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT,
GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion),
GET_ABI_MINOR(LoaderVersionInfo.xinputVersion));
xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION,
GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion),
GET_ABI_MINOR(LoaderVersionInfo.extensionVersion));
}
/* Public Interface to the loader. */
void *
LoaderOpen(const char *module, int *errmaj, int *errmin)
{
void *ret;
#if defined(DEBUG)
ErrorF("LoaderOpen(%s)\n", module);
#endif
xf86Msg(X_INFO, "Loading %s\n", module);
if (!(ret = dlopen(module, DLOPEN_LAZY | DLOPEN_GLOBAL))) {
xf86Msg(X_ERROR, "Failed to load %s: %s\n", module, dlerror());
if (errmaj)
*errmaj = LDR_NOLOAD;
if (errmin)
*errmin = LDR_NOLOAD;
return NULL;
}
return ret;
}
void *
LoaderSymbol(const char *name)
{
static void *global_scope = NULL;
void *p;
p = dlsym(RTLD_DEFAULT, name);
if (p != NULL)
return p;
if (!global_scope)
global_scope = dlopen(NULL, DLOPEN_LAZY | DLOPEN_GLOBAL);
if (global_scope)
return dlsym(global_scope, name);
return NULL;
}
void
LoaderUnload(const char *name, void *handle)
{
LogMessageVerbSigSafe(X_INFO, 1, "Unloading %s\n", name);
if (handle)
dlclose(handle);
}
unsigned long LoaderOptions = 0;
void
LoaderSetOptions(unsigned long opts)
{
LoaderOptions |= opts;
}
Bool
LoaderShouldIgnoreABI(void)
{
return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0;
}
int
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}, {
ABI_CLASS_FONT, LoaderVersionInfo.fontVersion}, {
NULL, 0}
};
int i;
for (i = 0; classes[i].name; i++) {
if (!strcmp(classes[i].name, abiclass)) {
return classes[i].version;
}
}
return 0;
}
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