2003-11-14 17:48:57 +01:00
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/*
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* Copyright 1995-1998 by Metro Link, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Metro Link, Inc. not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Metro Link, Inc. makes no
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* representations about the suitability of this software for any purpose.
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* It is provided "as is" without express or implied warranty.
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*
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* METRO LINK, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL METRO LINK, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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2003-11-25 20:29:01 +01:00
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/*
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* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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2005-07-03 09:02:09 +02:00
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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2003-11-14 17:48:57 +01:00
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdarg.h>
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2005-07-03 10:53:54 +02:00
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#include "os.h"
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2003-11-14 17:48:57 +01:00
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#include "loader.h"
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#include "loaderProcs.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "compiler.h"
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2008-12-05 20:01:09 +01:00
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2010-09-17 13:32:17 +02:00
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#include <X11/Xos.h>
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#if defined(DL_LAZY)
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#define DLOPEN_LAZY DL_LAZY
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#elif defined(RTLD_LAZY)
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#define DLOPEN_LAZY RTLD_LAZY
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#elif defined(__FreeBSD__)
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#define DLOPEN_LAZY 1
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#else
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#define DLOPEN_LAZY 0
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#endif
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#if defined(LD_GLOBAL)
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#define DLOPEN_GLOBAL LD_GLOBAL
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#elif defined(RTLD_GLOBAL)
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#define DLOPEN_GLOBAL RTLD_GLOBAL
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#else
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#define DLOPEN_GLOBAL 0
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#endif
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#else
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#error i have no dynamic linker and i must scream
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#endif
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Use libtool convenience libraries and better "symbol" table.
All .a libraries were converted to .la, and instead of linking the
Xorg binary with a mix of .a and .la, and adding some libraries more
then once in the command line, etc, now it generates a single libxorg.la
from all the required convenience libraries, and links with a dummy
xorg.c (that should usually be the file with the main function...).
This removes the requirement of some things like libosandcommon and
libinit, that existed to circumvent problems when linking multiple
.a and .la in the final Xorg binary.
The "symbol table" is now generated dynamically, by a shell script,
with an embedded gawk parser that parses cpp output. The new file
sdksyms.sh is generated by hand by analyzing all Makefile.am's and
making it create a sdksyms.c file, that includes all sdk headers that
will add symbols for the Xorg binary. Module headers aren't read, and
a in 2 files it was required to add a "<hash>ifndef XorgLoader" around
declarations shared between the Xorg binary and libextmod. A few
other changes were added to other sdk headers, like preventing
multiple inclusion, or including other headers to satisfy dependencies.
This should be a lot more portable, and better (hopefully properly)
using libtool to generate convenience libraries.
2008-12-07 05:22:19 +01:00
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extern void *xorg_symbols[];
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2003-11-14 17:48:57 +01:00
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void
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LoaderInit(void)
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{
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2012-03-21 20:55:09 +01:00
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xf86MsgVerb(X_INFO, 2, "Loader magic: %p\n", (void *) xorg_symbols);
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2003-11-14 17:48:57 +01:00
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xf86MsgVerb(X_INFO, 2, "Module ABI versions:\n");
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xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC,
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2012-03-21 20:55:09 +01:00
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GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion),
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GET_ABI_MINOR(LoaderVersionInfo.ansicVersion));
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2003-11-14 17:48:57 +01:00
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xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV,
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2012-03-21 20:55:09 +01:00
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GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion),
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GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion));
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2003-11-14 17:48:57 +01:00
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xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT,
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2012-03-21 20:55:09 +01:00
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GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion),
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GET_ABI_MINOR(LoaderVersionInfo.xinputVersion));
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2003-11-14 17:48:57 +01:00
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xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION,
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2012-03-21 20:55:09 +01:00
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GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion),
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GET_ABI_MINOR(LoaderVersionInfo.extensionVersion));
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2003-11-14 17:48:57 +01:00
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}
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2006-06-19 06:57:18 +02:00
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/* Public Interface to the loader. */
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2003-11-14 17:48:57 +01:00
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2010-09-17 17:19:17 +02:00
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void *
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LoaderOpen(const char *module, int *errmaj, int *errmin)
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2003-11-14 17:48:57 +01:00
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{
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2010-09-17 17:19:17 +02:00
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void *ret;
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2003-11-14 17:48:57 +01:00
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#if defined(DEBUG)
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2003-11-25 20:29:01 +01:00
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ErrorF("LoaderOpen(%s)\n", module);
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2003-11-14 17:48:57 +01:00
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#endif
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2003-11-25 20:29:01 +01:00
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xf86Msg(X_INFO, "Loading %s\n", module);
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2003-11-14 17:48:57 +01:00
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2010-09-17 17:19:17 +02:00
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if (!(ret = dlopen(module, DLOPEN_LAZY | DLOPEN_GLOBAL))) {
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2012-03-21 20:55:09 +01:00
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xf86Msg(X_ERROR, "Failed to load %s: %s\n", module, dlerror());
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if (errmaj)
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*errmaj = LDR_NOLOAD;
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if (errmin)
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*errmin = LDR_NOLOAD;
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return NULL;
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2003-11-14 17:48:57 +01:00
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}
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2010-09-17 17:19:17 +02:00
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return ret;
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2003-11-14 17:48:57 +01:00
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}
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Rework symbol visibility for easier maintenance
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.
This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)
LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.
xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 08:43:34 +01:00
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void *
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2010-09-17 13:32:17 +02:00
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LoaderSymbol(const char *name)
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2003-11-14 17:48:57 +01:00
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{
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2010-09-17 13:32:17 +02:00
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static void *global_scope = NULL;
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void *p;
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p = dlsym(RTLD_DEFAULT, name);
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if (p != NULL)
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2012-03-21 20:55:09 +01:00
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return p;
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2010-09-17 13:32:17 +02:00
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if (!global_scope)
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2012-03-21 20:55:09 +01:00
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global_scope = dlopen(NULL, DLOPEN_LAZY | DLOPEN_GLOBAL);
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2010-09-17 13:32:17 +02:00
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if (global_scope)
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2012-03-21 20:55:09 +01:00
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return dlsym(global_scope, name);
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2010-09-17 13:32:17 +02:00
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return NULL;
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2003-11-14 17:48:57 +01:00
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}
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2010-09-17 17:19:17 +02:00
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void
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LoaderUnload(const char *name, void *handle)
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2003-11-14 17:48:57 +01:00
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{
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2012-04-09 17:30:50 +02:00
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LogMessageVerbSigSafe(X_INFO, 1, "Unloading %s\n", name);
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2010-10-03 17:56:03 +02:00
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if (handle)
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2012-03-21 20:55:09 +01:00
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dlclose(handle);
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2003-11-14 17:48:57 +01:00
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}
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unsigned long LoaderOptions = 0;
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void
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LoaderSetOptions(unsigned long opts)
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{
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2003-11-25 20:29:01 +01:00
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LoaderOptions |= opts;
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2003-11-14 17:48:57 +01:00
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}
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Rework symbol visibility for easier maintenance
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.
This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)
LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.
xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 08:43:34 +01:00
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Bool
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2008-07-10 23:38:34 +02:00
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LoaderShouldIgnoreABI(void)
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{
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return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0;
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}
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Rework symbol visibility for easier maintenance
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.
This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)
LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.
xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 08:43:34 +01:00
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int
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2006-03-28 09:21:50 +02:00
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LoaderGetABIVersion(const char *abiclass)
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{
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struct {
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const char *name;
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int version;
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} classes[] = {
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2012-03-21 20:55:09 +01:00
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{
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ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion}, {
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ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion}, {
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ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion}, {
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ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion}, {
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ABI_CLASS_FONT, LoaderVersionInfo.fontVersion}, {
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NULL, 0}
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2006-03-28 09:21:50 +02:00
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};
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int i;
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2012-03-21 20:55:09 +01:00
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for (i = 0; classes[i].name; i++) {
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if (!strcmp(classes[i].name, abiclass)) {
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2006-03-28 09:21:50 +02:00
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return classes[i].version;
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}
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}
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return 0;
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}
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