1270 lines
38 KiB
C
1270 lines
38 KiB
C
/*
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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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/*
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* Copyright (c) 1997-2002 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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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "os.h"
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/* For stat() and related stuff */
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#define NO_OSLIB_PROTOTYPES
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#include "xf86_OSlib.h"
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#define LOADERDECLARATIONS
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#include "loaderProcs.h"
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#include "misc.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86Xinput.h"
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#include "loader.h"
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#include "xf86Optrec.h"
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#include <sys/types.h>
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#include <regex.h>
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#include <dirent.h>
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#include <limits.h>
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typedef struct _pattern {
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const char *pattern;
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regex_t rex;
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} PatternRec, *PatternPtr;
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/* Prototypes for static functions */
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static char *FindModule(const char *, const char *, const char **, PatternPtr);
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static Bool CheckVersion(const char *, XF86ModuleVersionInfo *,
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const XF86ModReqInfo *);
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static void UnloadModuleOrDriver(ModuleDescPtr mod);
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static char *LoaderGetCanonicalName(const char *, PatternPtr);
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static void RemoveChild(ModuleDescPtr);
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static ModuleDescPtr doLoadModule(const char *, const char *, const char **,
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const char **, pointer,
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const XF86ModReqInfo *, int *, int *);
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const ModuleVersions LoaderVersionInfo = {
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XORG_VERSION_CURRENT,
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ABI_ANSIC_VERSION,
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ABI_VIDEODRV_VERSION,
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ABI_XINPUT_VERSION,
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ABI_EXTENSION_VERSION,
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ABI_FONT_VERSION
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};
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static int ModuleDuplicated[] = { };
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static void
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FreeStringList(char **paths)
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{
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char **p;
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if (!paths)
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return;
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for (p = paths; *p; p++)
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free(*p);
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free(paths);
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}
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static char **defaultPathList = NULL;
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static Bool
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PathIsAbsolute(const char *path)
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{
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return *path == '/';
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}
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/*
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* Convert a comma-separated path into a NULL-terminated array of path
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* elements, rejecting any that are not full absolute paths, and appending
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* a '/' when it isn't already present.
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*/
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static char **
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InitPathList(const char *path)
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{
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char *fullpath = NULL;
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char *elem = NULL;
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char **list = NULL, **save = NULL;
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int len;
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int addslash;
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int n = 0;
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if (!path)
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return defaultPathList;
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fullpath = strdup(path);
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if (!fullpath)
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return NULL;
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elem = strtok(fullpath, ",");
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while (elem) {
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if (PathIsAbsolute(elem)) {
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len = strlen(elem);
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addslash = (elem[len - 1] != '/');
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if (addslash)
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len++;
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save = list;
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list = realloc(list, (n + 2) * sizeof(char *));
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if (!list) {
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if (save) {
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save[n] = NULL;
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FreeStringList(save);
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}
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free(fullpath);
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return NULL;
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}
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list[n] = malloc(len + 1);
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if (!list[n]) {
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FreeStringList(list);
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free(fullpath);
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return NULL;
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}
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strcpy(list[n], elem);
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if (addslash) {
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list[n][len - 1] = '/';
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list[n][len] = '\0';
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}
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n++;
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}
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elem = strtok(NULL, ",");
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}
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if (list)
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list[n] = NULL;
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free(fullpath);
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return list;
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}
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static void
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FreePathList(char **pathlist)
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{
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if (pathlist && pathlist != defaultPathList)
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FreeStringList(pathlist);
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}
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void
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LoaderSetPath(const char *path)
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{
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if (!path)
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return;
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defaultPathList = InitPathList(path);
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}
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/* Standard set of module subdirectories to search, in order of preference */
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static const char *stdSubdirs[] = {
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"",
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"input/",
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"drivers/",
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"multimedia/",
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"extensions/",
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"internal/",
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NULL
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};
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/*
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* Standard set of module name patterns to check, in order of preference
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* These are regular expressions (suitable for use with POSIX regex(3)).
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*
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* This list assumes that you're an ELFish platform and therefore your
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* shared libraries are named something.so. If we're ever nuts enough
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* to port this DDX to, say, Darwin, we'll need to fix this.
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*/
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static PatternRec stdPatterns[] = {
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#ifdef __CYGWIN__
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{"^cyg(.*)\\.dll$",},
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{"(.*)_drv\\.dll$",},
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{"(.*)\\.dll$",},
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#else
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{"^lib(.*)\\.so$",},
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{"(.*)_drv\\.so$",},
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{"(.*)\\.so$",},
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#endif
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{NULL,}
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};
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static PatternPtr
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InitPatterns(const char **patternlist)
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{
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char errmsg[80];
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int i, e;
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PatternPtr patterns = NULL;
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PatternPtr p = NULL;
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static int firstTime = 1;
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const char **s;
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if (firstTime) {
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/* precompile stdPatterns */
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firstTime = 0;
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for (p = stdPatterns; p->pattern; p++)
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if ((e = regcomp(&p->rex, p->pattern, REG_EXTENDED)) != 0) {
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regerror(e, &p->rex, errmsg, sizeof(errmsg));
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FatalError("InitPatterns: regcomp error for `%s': %s\n",
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p->pattern, errmsg);
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}
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}
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if (patternlist) {
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for (i = 0, s = patternlist; *s; i++, s++)
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if (*s == DEFAULT_LIST)
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i += sizeof(stdPatterns) / sizeof(stdPatterns[0]) - 1 - 1;
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patterns = malloc((i + 1) * sizeof(PatternRec));
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if (!patterns) {
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return NULL;
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}
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for (i = 0, s = patternlist; *s; i++, s++)
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if (*s != DEFAULT_LIST) {
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p = patterns + i;
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p->pattern = *s;
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if ((e = regcomp(&p->rex, p->pattern, REG_EXTENDED)) != 0) {
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regerror(e, &p->rex, errmsg, sizeof(errmsg));
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ErrorF("InitPatterns: regcomp error for `%s': %s\n",
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p->pattern, errmsg);
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i--;
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}
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}
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else {
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for (p = stdPatterns; p->pattern; p++, i++)
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patterns[i] = *p;
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if (p != stdPatterns)
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i--;
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}
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patterns[i].pattern = NULL;
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}
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else
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patterns = stdPatterns;
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return patterns;
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}
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static void
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FreePatterns(PatternPtr patterns)
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{
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if (patterns && patterns != stdPatterns)
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free(patterns);
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}
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static const char **
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InitSubdirs(const char **subdirlist)
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{
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int i;
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const char **tmp_subdirlist = NULL;
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char **subdirs = NULL;
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const char **s, **stmp = NULL;
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const char *osname;
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const char *slash;
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int oslen = 0, len;
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Bool indefault;
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if (subdirlist == NULL) {
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subdirlist = tmp_subdirlist = malloc(2 * sizeof(char *));
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if (subdirlist == NULL)
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return NULL;
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subdirlist[0] = DEFAULT_LIST;
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subdirlist[1] = NULL;
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}
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LoaderGetOS(&osname, NULL, NULL, NULL);
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oslen = strlen(osname);
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{
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/* Count number of entries and check for invalid paths */
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for (i = 0, s = subdirlist; *s; i++, s++) {
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if (*s == DEFAULT_LIST) {
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i += sizeof(stdSubdirs) / sizeof(stdSubdirs[0]) - 1 - 1;
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}
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else {
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/*
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* Path validity check. Don't allow absolute paths, or
|
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* paths containing "..". To catch absolute paths on
|
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* platforms that use driver letters, don't allow the ':'
|
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* character to appear at all.
|
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*/
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if (**s == '/' || **s == '\\' || strchr(*s, ':') ||
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strstr(*s, "..")) {
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xf86Msg(X_ERROR, "InitSubdirs: Bad subdir: \"%s\"\n", *s);
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free(tmp_subdirlist);
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return NULL;
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}
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}
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}
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subdirs = malloc((i * 2 + 1) * sizeof(char *));
|
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if (!subdirs) {
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free(tmp_subdirlist);
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return NULL;
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|
}
|
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i = 0;
|
|
s = subdirlist;
|
|
indefault = FALSE;
|
|
while (*s) {
|
|
if (*s == DEFAULT_LIST) {
|
|
/* Divert to the default list */
|
|
indefault = TRUE;
|
|
stmp = ++s;
|
|
s = stdSubdirs;
|
|
}
|
|
len = strlen(*s);
|
|
if (**s && (*s)[len - 1] != '/') {
|
|
slash = "/";
|
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len++;
|
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}
|
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else
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slash = "";
|
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len += oslen + 2;
|
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if (!(subdirs[i] = malloc(len))) {
|
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while (--i >= 0)
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free(subdirs[i]);
|
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free(subdirs);
|
|
free(tmp_subdirlist);
|
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return NULL;
|
|
}
|
|
/* tack on the OS name */
|
|
sprintf(subdirs[i], "%s%s%s/", *s, slash, osname);
|
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i++;
|
|
/* path as given */
|
|
subdirs[i] = strdup(*s);
|
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i++;
|
|
s++;
|
|
if (indefault && !s) {
|
|
/* revert back to the main list */
|
|
indefault = FALSE;
|
|
s = stmp;
|
|
}
|
|
}
|
|
subdirs[i] = NULL;
|
|
}
|
|
free(tmp_subdirlist);
|
|
return (const char **) subdirs;
|
|
}
|
|
|
|
static void
|
|
FreeSubdirs(const char **subdirs)
|
|
{
|
|
const char **s;
|
|
|
|
if (subdirs) {
|
|
for (s = subdirs; *s; s++)
|
|
free((char *) *s);
|
|
free(subdirs);
|
|
}
|
|
}
|
|
|
|
static char *
|
|
FindModuleInSubdir(const char *dirpath, const char *module)
|
|
{
|
|
struct dirent *direntry = NULL;
|
|
DIR *dir = NULL;
|
|
char *ret = NULL, tmpBuf[PATH_MAX];
|
|
struct stat stat_buf;
|
|
|
|
dir = opendir(dirpath);
|
|
if (!dir)
|
|
return NULL;
|
|
|
|
while ((direntry = readdir(dir))) {
|
|
if (direntry->d_name[0] == '.')
|
|
continue;
|
|
snprintf(tmpBuf, PATH_MAX, "%s%s/", dirpath, direntry->d_name);
|
|
/* the stat with the appended / fails for normal files,
|
|
and works for sub dirs fine, looks a bit strange in strace
|
|
but does seem to work */
|
|
if ((stat(tmpBuf, &stat_buf) == 0) && S_ISDIR(stat_buf.st_mode)) {
|
|
if ((ret = FindModuleInSubdir(tmpBuf, module)))
|
|
break;
|
|
continue;
|
|
}
|
|
|
|
#ifdef __CYGWIN__
|
|
snprintf(tmpBuf, PATH_MAX, "cyg%s.dll", module);
|
|
#else
|
|
snprintf(tmpBuf, PATH_MAX, "lib%s.so", module);
|
|
#endif
|
|
if (strcmp(direntry->d_name, tmpBuf) == 0) {
|
|
if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
|
|
ret = NULL;
|
|
break;
|
|
}
|
|
|
|
#ifdef __CYGWIN__
|
|
snprintf(tmpBuf, PATH_MAX, "%s_drv.dll", module);
|
|
#else
|
|
snprintf(tmpBuf, PATH_MAX, "%s_drv.so", module);
|
|
#endif
|
|
if (strcmp(direntry->d_name, tmpBuf) == 0) {
|
|
if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
|
|
ret = NULL;
|
|
break;
|
|
}
|
|
|
|
#ifdef __CYGWIN__
|
|
snprintf(tmpBuf, PATH_MAX, "%s.dll", module);
|
|
#else
|
|
snprintf(tmpBuf, PATH_MAX, "%s.so", module);
|
|
#endif
|
|
if (strcmp(direntry->d_name, tmpBuf) == 0) {
|
|
if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
|
|
ret = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
closedir(dir);
|
|
return ret;
|
|
}
|
|
|
|
static char *
|
|
FindModule(const char *module, const char *dirname, const char **subdirlist,
|
|
PatternPtr patterns)
|
|
{
|
|
char buf[PATH_MAX + 1];
|
|
char *name = NULL;
|
|
const char **subdirs = NULL;
|
|
const char **s;
|
|
|
|
if (strlen(dirname) > PATH_MAX)
|
|
return NULL;
|
|
|
|
subdirs = InitSubdirs(subdirlist);
|
|
if (!subdirs)
|
|
return NULL;
|
|
|
|
for (s = subdirs; *s; s++) {
|
|
if ((strlen(dirname) + strlen(*s)) > PATH_MAX)
|
|
continue;
|
|
strcpy(buf, dirname);
|
|
strcat(buf, *s);
|
|
if ((name = FindModuleInSubdir(buf, module)))
|
|
break;
|
|
}
|
|
|
|
FreeSubdirs(subdirs);
|
|
|
|
return name;
|
|
}
|
|
|
|
char **
|
|
LoaderListDirs(const char **subdirlist, const char **patternlist)
|
|
{
|
|
char buf[PATH_MAX + 1];
|
|
char **pathlist;
|
|
char **elem;
|
|
const char **subdirs;
|
|
const char **s;
|
|
PatternPtr patterns;
|
|
PatternPtr p;
|
|
DIR *d;
|
|
struct dirent *dp;
|
|
regmatch_t match[2];
|
|
struct stat stat_buf;
|
|
int len, dirlen;
|
|
char *fp;
|
|
char **listing = NULL;
|
|
char **save;
|
|
char **ret = NULL;
|
|
int n = 0;
|
|
|
|
if (!(pathlist = InitPathList(NULL)))
|
|
return NULL;
|
|
if (!(subdirs = InitSubdirs(subdirlist)))
|
|
goto bail;
|
|
if (!(patterns = InitPatterns(patternlist)))
|
|
goto bail;
|
|
|
|
for (elem = pathlist; *elem; elem++) {
|
|
for (s = subdirs; *s; s++) {
|
|
if ((dirlen = strlen(*elem) + strlen(*s)) > PATH_MAX)
|
|
continue;
|
|
strcpy(buf, *elem);
|
|
strcat(buf, *s);
|
|
fp = buf + dirlen;
|
|
if (stat(buf, &stat_buf) == 0 && S_ISDIR(stat_buf.st_mode) &&
|
|
(d = opendir(buf))) {
|
|
if (buf[dirlen - 1] != '/') {
|
|
buf[dirlen++] = '/';
|
|
fp++;
|
|
}
|
|
while ((dp = readdir(d))) {
|
|
if (dirlen + strlen(dp->d_name) > PATH_MAX)
|
|
continue;
|
|
strcpy(fp, dp->d_name);
|
|
if (!(stat(buf, &stat_buf) == 0 &&
|
|
S_ISREG(stat_buf.st_mode)))
|
|
continue;
|
|
for (p = patterns; p->pattern; p++) {
|
|
if (regexec(&p->rex, dp->d_name, 2, match, 0) == 0 &&
|
|
match[1].rm_so != -1) {
|
|
len = match[1].rm_eo - match[1].rm_so;
|
|
save = listing;
|
|
listing = realloc(listing,
|
|
(n + 2) * sizeof(char *));
|
|
if (!listing) {
|
|
if (save) {
|
|
save[n] = NULL;
|
|
FreeStringList(save);
|
|
}
|
|
closedir(d);
|
|
goto bail;
|
|
}
|
|
listing[n] = malloc(len + 1);
|
|
if (!listing[n]) {
|
|
FreeStringList(listing);
|
|
closedir(d);
|
|
goto bail;
|
|
}
|
|
strncpy(listing[n], dp->d_name + match[1].rm_so,
|
|
len);
|
|
listing[n][len] = '\0';
|
|
n++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
closedir(d);
|
|
}
|
|
}
|
|
}
|
|
if (listing)
|
|
listing[n] = NULL;
|
|
ret = listing;
|
|
|
|
bail:
|
|
FreePatterns(patterns);
|
|
FreeSubdirs(subdirs);
|
|
FreePathList(pathlist);
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
LoaderFreeDirList(char **list)
|
|
{
|
|
FreeStringList(list);
|
|
}
|
|
|
|
static Bool
|
|
CheckVersion(const char *module, XF86ModuleVersionInfo * data,
|
|
const XF86ModReqInfo * req)
|
|
{
|
|
int vercode[4];
|
|
char verstr[4];
|
|
long ver = data->xf86version;
|
|
MessageType errtype;
|
|
|
|
xf86Msg(X_INFO, "Module %s: vendor=\"%s\"\n",
|
|
data->modname ? data->modname : "UNKNOWN!",
|
|
data->vendor ? data->vendor : "UNKNOWN!");
|
|
|
|
/* Check for the different scheme used in XFree86 4.0.x releases:
|
|
* ((((((((major << 7) | minor) << 7) | subminor) << 5) | beta) << 5) | alpha)
|
|
* Since it wasn't used in 4.1.0 or later, limit to versions in the 4.0.x
|
|
* range, which limits the overlap with the new version scheme to conflicts
|
|
* with 6.71.8.764 through 6.72.39.934.
|
|
*/
|
|
if ((ver > (4 << 24)) && (ver < ((4 << 24) + (1 << 17)))) {
|
|
/* 4.0.x and earlier */
|
|
verstr[1] = verstr[3] = 0;
|
|
verstr[2] = (ver & 0x1f) ? (ver & 0x1f) + 'a' - 1 : 0;
|
|
ver >>= 5;
|
|
verstr[0] = (ver & 0x1f) ? (ver & 0x1f) + 'A' - 1 : 0;
|
|
ver >>= 5;
|
|
vercode[2] = ver & 0x7f;
|
|
ver >>= 7;
|
|
vercode[1] = ver & 0x7f;
|
|
ver >>= 7;
|
|
vercode[0] = ver;
|
|
xf86ErrorF("\tcompiled for %d.%d", vercode[0], vercode[1]);
|
|
if (vercode[2] != 0)
|
|
xf86ErrorF(".%d", vercode[2]);
|
|
xf86ErrorF("%s%s, module version = %d.%d.%d\n", verstr, verstr + 2,
|
|
data->majorversion, data->minorversion, data->patchlevel);
|
|
}
|
|
else {
|
|
vercode[0] = ver / 10000000;
|
|
vercode[1] = (ver / 100000) % 100;
|
|
vercode[2] = (ver / 1000) % 100;
|
|
vercode[3] = ver % 1000;
|
|
xf86ErrorF("\tcompiled for %d.%d.%d", vercode[0], vercode[1],
|
|
vercode[2]);
|
|
if (vercode[3] != 0)
|
|
xf86ErrorF(".%d", vercode[3]);
|
|
xf86ErrorF(", module version = %d.%d.%d\n", data->majorversion,
|
|
data->minorversion, data->patchlevel);
|
|
}
|
|
|
|
if (data->moduleclass)
|
|
xf86ErrorFVerb(2, "\tModule class: %s\n", data->moduleclass);
|
|
|
|
ver = -1;
|
|
if (data->abiclass) {
|
|
int abimaj, abimin;
|
|
int vermaj, vermin;
|
|
|
|
if (!strcmp(data->abiclass, ABI_CLASS_ANSIC))
|
|
ver = LoaderVersionInfo.ansicVersion;
|
|
else if (!strcmp(data->abiclass, ABI_CLASS_VIDEODRV))
|
|
ver = LoaderVersionInfo.videodrvVersion;
|
|
else if (!strcmp(data->abiclass, ABI_CLASS_XINPUT))
|
|
ver = LoaderVersionInfo.xinputVersion;
|
|
else if (!strcmp(data->abiclass, ABI_CLASS_EXTENSION))
|
|
ver = LoaderVersionInfo.extensionVersion;
|
|
else if (!strcmp(data->abiclass, ABI_CLASS_FONT))
|
|
ver = LoaderVersionInfo.fontVersion;
|
|
|
|
abimaj = GET_ABI_MAJOR(data->abiversion);
|
|
abimin = GET_ABI_MINOR(data->abiversion);
|
|
xf86ErrorFVerb(2, "\tABI class: %s, version %d.%d\n",
|
|
data->abiclass, abimaj, abimin);
|
|
if (ver != -1) {
|
|
vermaj = GET_ABI_MAJOR(ver);
|
|
vermin = GET_ABI_MINOR(ver);
|
|
if (abimaj != vermaj) {
|
|
if (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL)
|
|
errtype = X_WARNING;
|
|
else
|
|
errtype = X_ERROR;
|
|
xf86MsgVerb(errtype, 0,
|
|
"module ABI major version (%d) doesn't"
|
|
" match the server's version (%d)\n",
|
|
abimaj, vermaj);
|
|
if (!(LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL))
|
|
return FALSE;
|
|
}
|
|
else if (abimin > vermin) {
|
|
if (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL)
|
|
errtype = X_WARNING;
|
|
else
|
|
errtype = X_ERROR;
|
|
xf86MsgVerb(errtype, 0,
|
|
"module ABI minor version (%d) is "
|
|
"newer than the server's version "
|
|
"(%d)\n", abimin, vermin);
|
|
if (!(LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL))
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check against requirements that the caller has specified */
|
|
if (req) {
|
|
if (req->majorversion != MAJOR_UNSPEC) {
|
|
if (data->majorversion != req->majorversion) {
|
|
xf86MsgVerb(X_WARNING, 2, "module major version (%d) "
|
|
"doesn't match required major version (%d)\n",
|
|
data->majorversion, req->majorversion);
|
|
return FALSE;
|
|
}
|
|
else if (req->minorversion != MINOR_UNSPEC) {
|
|
if (data->minorversion < req->minorversion) {
|
|
xf86MsgVerb(X_WARNING, 2, "module minor version (%d) "
|
|
"is less than the required minor version (%d)\n",
|
|
data->minorversion, req->minorversion);
|
|
return FALSE;
|
|
}
|
|
else if (data->minorversion == req->minorversion &&
|
|
req->patchlevel != PATCH_UNSPEC) {
|
|
if (data->patchlevel < req->patchlevel) {
|
|
xf86MsgVerb(X_WARNING, 2, "module patch level (%d) "
|
|
"is less than the required patch level (%d)\n",
|
|
data->patchlevel, req->patchlevel);
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (req->moduleclass) {
|
|
if (!data->moduleclass ||
|
|
strcmp(req->moduleclass, data->moduleclass)) {
|
|
xf86MsgVerb(X_WARNING, 2, "Module class (%s) doesn't match "
|
|
"the required class (%s)\n",
|
|
data->moduleclass ? data->moduleclass : "<NONE>",
|
|
req->moduleclass);
|
|
return FALSE;
|
|
}
|
|
}
|
|
else if (req->abiclass != ABI_CLASS_NONE) {
|
|
if (!data->abiclass || strcmp(req->abiclass, data->abiclass)) {
|
|
xf86MsgVerb(X_WARNING, 2, "ABI class (%s) doesn't match the "
|
|
"required ABI class (%s)\n",
|
|
data->abiclass ? data->abiclass : "<NONE>",
|
|
req->abiclass);
|
|
return FALSE;
|
|
}
|
|
}
|
|
if ((req->abiclass != ABI_CLASS_NONE) &&
|
|
req->abiversion != ABI_VERS_UNSPEC) {
|
|
int reqmaj, reqmin, maj, min;
|
|
|
|
reqmaj = GET_ABI_MAJOR(req->abiversion);
|
|
reqmin = GET_ABI_MINOR(req->abiversion);
|
|
maj = GET_ABI_MAJOR(data->abiversion);
|
|
min = GET_ABI_MINOR(data->abiversion);
|
|
if (maj != reqmaj) {
|
|
xf86MsgVerb(X_WARNING, 2, "ABI major version (%d) doesn't "
|
|
"match the required ABI major version (%d)\n",
|
|
maj, reqmaj);
|
|
return FALSE;
|
|
}
|
|
/* XXX Maybe this should be the other way around? */
|
|
if (min > reqmin) {
|
|
xf86MsgVerb(X_WARNING, 2, "module ABI minor version (%d) "
|
|
"is newer than that available (%d)\n", min, reqmin);
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static ModuleDescPtr
|
|
AddSibling(ModuleDescPtr head, ModuleDescPtr new)
|
|
{
|
|
new->sib = head;
|
|
return new;
|
|
}
|
|
|
|
pointer
|
|
LoadSubModule(pointer _parent, const char *module,
|
|
const char **subdirlist, const char **patternlist,
|
|
pointer options, const XF86ModReqInfo * modreq,
|
|
int *errmaj, int *errmin)
|
|
{
|
|
ModuleDescPtr submod;
|
|
ModuleDescPtr parent = (ModuleDescPtr) _parent;
|
|
|
|
xf86MsgVerb(X_INFO, 3, "Loading sub module \"%s\"\n", module);
|
|
|
|
if (PathIsAbsolute(module)) {
|
|
xf86Msg(X_ERROR,
|
|
"LoadSubModule: Absolute module path not permitted: \"%s\"\n",
|
|
module);
|
|
if (errmaj)
|
|
*errmaj = LDR_BADUSAGE;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
return NULL;
|
|
}
|
|
|
|
submod = doLoadModule(module, NULL, subdirlist, patternlist, options,
|
|
modreq, errmaj, errmin);
|
|
if (submod && submod != (ModuleDescPtr) 1) {
|
|
parent->child = AddSibling(parent->child, submod);
|
|
submod->parent = parent;
|
|
}
|
|
return submod;
|
|
}
|
|
|
|
static ModuleDescPtr
|
|
NewModuleDesc(const char *name)
|
|
{
|
|
ModuleDescPtr mdp = calloc(1, sizeof(ModuleDesc));
|
|
|
|
if (mdp)
|
|
mdp->name = xstrdup(name);
|
|
|
|
return mdp;
|
|
}
|
|
|
|
ModuleDescPtr
|
|
DuplicateModule(ModuleDescPtr mod, ModuleDescPtr parent)
|
|
{
|
|
ModuleDescPtr ret;
|
|
|
|
if (!mod)
|
|
return NULL;
|
|
|
|
ret = NewModuleDesc(mod->name);
|
|
if (ret == NULL)
|
|
return NULL;
|
|
|
|
ret->handle = mod->handle;
|
|
|
|
ret->SetupProc = mod->SetupProc;
|
|
ret->TearDownProc = mod->TearDownProc;
|
|
ret->TearDownData = ModuleDuplicated;
|
|
ret->child = DuplicateModule(mod->child, ret);
|
|
ret->sib = DuplicateModule(mod->sib, parent);
|
|
ret->parent = parent;
|
|
ret->VersionInfo = mod->VersionInfo;
|
|
ret->path = strdup(mod->path);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const char *compiled_in_modules[] = {
|
|
"ddc",
|
|
"i2c",
|
|
"ramdac",
|
|
"dbe",
|
|
"record",
|
|
"extmod",
|
|
"dri",
|
|
"dri2",
|
|
NULL
|
|
};
|
|
|
|
static ModuleDescPtr
|
|
doLoadModule(const char *module, const char *path, const char **subdirlist,
|
|
const char **patternlist, pointer options,
|
|
const XF86ModReqInfo * modreq, int *errmaj, int *errmin)
|
|
{
|
|
XF86ModuleData *initdata = NULL;
|
|
char **pathlist = NULL;
|
|
char *found = NULL;
|
|
char *name = NULL;
|
|
char **path_elem = NULL;
|
|
char *p = NULL;
|
|
ModuleDescPtr ret = NULL;
|
|
PatternPtr patterns = NULL;
|
|
int noncanonical = 0;
|
|
char *m = NULL;
|
|
const char **cim;
|
|
|
|
xf86MsgVerb(X_INFO, 3, "LoadModule: \"%s\"", module);
|
|
|
|
patterns = InitPatterns(patternlist);
|
|
name = LoaderGetCanonicalName(module, patterns);
|
|
noncanonical = (name && strcmp(module, name) != 0);
|
|
if (noncanonical) {
|
|
xf86ErrorFVerb(3, " (%s)\n", name);
|
|
xf86MsgVerb(X_WARNING, 1,
|
|
"LoadModule: given non-canonical module name \"%s\"\n",
|
|
module);
|
|
m = name;
|
|
}
|
|
else {
|
|
xf86ErrorFVerb(3, "\n");
|
|
m = (char *) module;
|
|
}
|
|
|
|
for (cim = compiled_in_modules; *cim; cim++)
|
|
if (!strcmp(m, *cim)) {
|
|
xf86MsgVerb(X_INFO, 3, "Module \"%s\" already built-in\n", m);
|
|
ret = (ModuleDescPtr) 1;
|
|
goto LoadModule_exit;
|
|
}
|
|
|
|
if (!name) {
|
|
if (errmaj)
|
|
*errmaj = LDR_BADUSAGE;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
ret = NewModuleDesc(name);
|
|
if (!ret) {
|
|
if (errmaj)
|
|
*errmaj = LDR_NOMEM;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
|
|
pathlist = InitPathList(path);
|
|
if (!pathlist) {
|
|
/* This could be a malloc failure too */
|
|
if (errmaj)
|
|
*errmaj = LDR_BADUSAGE;
|
|
if (errmin)
|
|
*errmin = 1;
|
|
goto LoadModule_fail;
|
|
}
|
|
|
|
/*
|
|
* if the module name is not a full pathname, we need to
|
|
* check the elements in the path
|
|
*/
|
|
if (PathIsAbsolute(module))
|
|
found = xstrdup(module);
|
|
path_elem = pathlist;
|
|
while (!found && *path_elem != NULL) {
|
|
found = FindModule(m, *path_elem, subdirlist, patterns);
|
|
path_elem++;
|
|
/*
|
|
* When the module name isn't the canonical name, search for the
|
|
* former if no match was found for the latter.
|
|
*/
|
|
if (!*path_elem && m == name) {
|
|
path_elem = pathlist;
|
|
m = (char *) module;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* did we find the module?
|
|
*/
|
|
if (!found) {
|
|
xf86Msg(X_WARNING, "Warning, couldn't open module %s\n", module);
|
|
if (errmaj)
|
|
*errmaj = LDR_NOENT;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
ret->handle = LoaderOpen(found, errmaj, errmin);
|
|
if (ret->handle == NULL)
|
|
goto LoadModule_fail;
|
|
ret->path = strdup(found);
|
|
|
|
/* drop any explicit suffix from the module name */
|
|
p = strchr(name, '.');
|
|
if (p)
|
|
*p = '\0';
|
|
|
|
/*
|
|
* now check if the special data object <modulename>ModuleData is
|
|
* present.
|
|
*/
|
|
if (asprintf(&p, "%sModuleData", name) == -1) {
|
|
p = NULL;
|
|
if (errmaj)
|
|
*errmaj = LDR_NOMEM;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
initdata = LoaderSymbolFromModule(ret->handle, p);
|
|
if (initdata) {
|
|
ModuleSetupProc setup;
|
|
ModuleTearDownProc teardown;
|
|
XF86ModuleVersionInfo *vers;
|
|
|
|
vers = initdata->vers;
|
|
setup = initdata->setup;
|
|
teardown = initdata->teardown;
|
|
|
|
if (vers) {
|
|
if (!CheckVersion(module, vers, modreq)) {
|
|
if (errmaj)
|
|
*errmaj = LDR_MISMATCH;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
}
|
|
else {
|
|
xf86Msg(X_ERROR,
|
|
"LoadModule: Module %s does not supply"
|
|
" version information\n", module);
|
|
if (errmaj)
|
|
*errmaj = LDR_INVALID;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
if (setup)
|
|
ret->SetupProc = setup;
|
|
if (teardown)
|
|
ret->TearDownProc = teardown;
|
|
ret->VersionInfo = vers;
|
|
}
|
|
else {
|
|
/* no initdata, fail the load */
|
|
xf86Msg(X_ERROR, "LoadModule: Module %s does not have a %s "
|
|
"data object.\n", module, p);
|
|
if (errmaj)
|
|
*errmaj = LDR_INVALID;
|
|
if (errmin)
|
|
*errmin = 0;
|
|
goto LoadModule_fail;
|
|
}
|
|
if (ret->SetupProc) {
|
|
ret->TearDownData = ret->SetupProc(ret, options, errmaj, errmin);
|
|
if (!ret->TearDownData) {
|
|
goto LoadModule_fail;
|
|
}
|
|
}
|
|
else if (options) {
|
|
xf86Msg(X_WARNING, "Module Options present, but no SetupProc "
|
|
"available for %s\n", module);
|
|
}
|
|
goto LoadModule_exit;
|
|
|
|
LoadModule_fail:
|
|
UnloadModule(ret);
|
|
ret = NULL;
|
|
|
|
LoadModule_exit:
|
|
FreePathList(pathlist);
|
|
FreePatterns(patterns);
|
|
free(found);
|
|
free(name);
|
|
free(p);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* LoadModule: load a module
|
|
*
|
|
* module The module name. Normally this is not a filename but the
|
|
* module's "canonical name. A full pathname is, however,
|
|
* also accepted.
|
|
* path A comma separated list of module directories.
|
|
* subdirlist A NULL terminated list of subdirectories to search. When
|
|
* NULL, the default "stdSubdirs" list is used. The default
|
|
* list is also substituted for entries with value DEFAULT_LIST.
|
|
* patternlist A NULL terminated list of regular expressions used to find
|
|
* module filenames. Each regex should contain exactly one
|
|
* subexpression that corresponds to the canonical module name.
|
|
* When NULL, the default "stdPatterns" list is used. The
|
|
* default list is also substituted for entries with value
|
|
* DEFAULT_LIST.
|
|
* options A NULL terminated list of Options that are passed to the
|
|
* module's SetupProc function.
|
|
* modreq An optional XF86ModReqInfo* containing
|
|
* version/ABI/vendor-ABI requirements to check for when
|
|
* loading the module. The following fields of the
|
|
* XF86ModReqInfo struct are checked:
|
|
* majorversion - must match the module's majorversion exactly
|
|
* minorversion - the module's minorversion must be >= this
|
|
* patchlevel - the module's minorversion.patchlevel must be
|
|
* >= this. Patchlevel is ignored when
|
|
* minorversion is not set.
|
|
* abiclass - (string) must match the module's abiclass
|
|
* abiversion - must be consistent with the module's
|
|
* abiversion (major equal, minor no older)
|
|
* moduleclass - string must match the module's moduleclass
|
|
* string
|
|
* "don't care" values are ~0 for numbers, and NULL for strings
|
|
* errmaj Major error return.
|
|
* errmin Minor error return.
|
|
*
|
|
*/
|
|
ModuleDescPtr
|
|
LoadModule(const char *module, const char *path, const char **subdirlist,
|
|
const char **patternlist, pointer options,
|
|
const XF86ModReqInfo * modreq, int *errmaj, int *errmin)
|
|
{
|
|
return doLoadModule(module, path, subdirlist, patternlist, options,
|
|
modreq, errmaj, errmin);
|
|
}
|
|
|
|
void
|
|
UnloadModule(pointer mod)
|
|
{
|
|
UnloadModuleOrDriver((ModuleDescPtr) mod);
|
|
}
|
|
|
|
static void
|
|
UnloadModuleOrDriver(ModuleDescPtr mod)
|
|
{
|
|
if (mod == (ModuleDescPtr) 1)
|
|
return;
|
|
|
|
if (mod == NULL || mod->name == NULL)
|
|
return;
|
|
|
|
if (mod->parent)
|
|
LogMessageVerbSigSafe(X_INFO, 3, "UnloadSubModule: \"%s\"\n",
|
|
mod->name);
|
|
else
|
|
LogMessageVerbSigSafe(X_INFO, 3, "UnloadModule: \"%s\"\n", mod->name);
|
|
|
|
if (mod->TearDownData != ModuleDuplicated) {
|
|
if ((mod->TearDownProc) && (mod->TearDownData))
|
|
mod->TearDownProc(mod->TearDownData);
|
|
LoaderUnload(mod->name, mod->handle);
|
|
}
|
|
|
|
if (mod->child)
|
|
UnloadModuleOrDriver(mod->child);
|
|
if (mod->sib)
|
|
UnloadModuleOrDriver(mod->sib);
|
|
free(mod->path);
|
|
free(mod->name);
|
|
free(mod);
|
|
}
|
|
|
|
void
|
|
UnloadSubModule(pointer _mod)
|
|
{
|
|
ModuleDescPtr mod = (ModuleDescPtr) _mod;
|
|
|
|
/* Some drivers are calling us on built-in submodules, ignore them */
|
|
if (mod == (ModuleDescPtr) 1)
|
|
return;
|
|
RemoveChild(mod);
|
|
UnloadModuleOrDriver(mod);
|
|
}
|
|
|
|
static void
|
|
RemoveChild(ModuleDescPtr child)
|
|
{
|
|
ModuleDescPtr mdp;
|
|
ModuleDescPtr prevsib;
|
|
ModuleDescPtr parent;
|
|
|
|
if (!child->parent)
|
|
return;
|
|
|
|
parent = child->parent;
|
|
if (parent->child == child) {
|
|
parent->child = child->sib;
|
|
return;
|
|
}
|
|
|
|
prevsib = parent->child;
|
|
mdp = prevsib->sib;
|
|
while (mdp && mdp != child) {
|
|
prevsib = mdp;
|
|
mdp = mdp->sib;
|
|
}
|
|
if (mdp == child)
|
|
prevsib->sib = child->sib;
|
|
child->sib = NULL;
|
|
return;
|
|
}
|
|
|
|
void
|
|
LoaderErrorMsg(const char *name, const char *modname, int errmaj, int errmin)
|
|
{
|
|
const char *msg;
|
|
MessageType type = X_ERROR;
|
|
|
|
switch (errmaj) {
|
|
case LDR_NOERROR:
|
|
msg = "no error";
|
|
break;
|
|
case LDR_NOMEM:
|
|
msg = "out of memory";
|
|
break;
|
|
case LDR_NOENT:
|
|
msg = "module does not exist";
|
|
break;
|
|
case LDR_NOSUBENT:
|
|
msg = "a required submodule could not be loaded";
|
|
break;
|
|
case LDR_NOSPACE:
|
|
msg = "too many modules";
|
|
break;
|
|
case LDR_NOMODOPEN:
|
|
msg = "open failed";
|
|
break;
|
|
case LDR_UNKTYPE:
|
|
msg = "unknown module type";
|
|
break;
|
|
case LDR_NOLOAD:
|
|
msg = "loader failed";
|
|
break;
|
|
case LDR_ONCEONLY:
|
|
msg = "already loaded";
|
|
type = X_INFO;
|
|
break;
|
|
case LDR_NOPORTOPEN:
|
|
msg = "port open failed";
|
|
break;
|
|
case LDR_NOHARDWARE:
|
|
msg = "no hardware found";
|
|
break;
|
|
case LDR_MISMATCH:
|
|
msg = "module requirement mismatch";
|
|
break;
|
|
case LDR_BADUSAGE:
|
|
msg = "invalid argument(s) to LoadModule()";
|
|
break;
|
|
case LDR_INVALID:
|
|
msg = "invalid module";
|
|
break;
|
|
case LDR_BADOS:
|
|
msg = "module doesn't support this OS";
|
|
break;
|
|
case LDR_MODSPECIFIC:
|
|
msg = "module-specific error";
|
|
break;
|
|
default:
|
|
msg = "unknown error";
|
|
}
|
|
if (name)
|
|
xf86Msg(type, "%s: Failed to load module \"%s\" (%s, %d)\n",
|
|
name, modname, msg, errmin);
|
|
else
|
|
xf86Msg(type, "Failed to load module \"%s\" (%s, %d)\n",
|
|
modname, msg, errmin);
|
|
}
|
|
|
|
/* Given a module path or file name, return the module's canonical name */
|
|
static char *
|
|
LoaderGetCanonicalName(const char *modname, PatternPtr patterns)
|
|
{
|
|
char *str;
|
|
const char *s;
|
|
int len;
|
|
PatternPtr p;
|
|
regmatch_t match[2];
|
|
|
|
/* Strip off any leading path */
|
|
s = strrchr(modname, '/');
|
|
if (s == NULL)
|
|
s = modname;
|
|
else
|
|
s++;
|
|
|
|
/* Find the first regex that is matched */
|
|
for (p = patterns; p->pattern; p++)
|
|
if (regexec(&p->rex, s, 2, match, 0) == 0 && match[1].rm_so != -1) {
|
|
len = match[1].rm_eo - match[1].rm_so;
|
|
str = malloc(len + 1);
|
|
if (!str)
|
|
return NULL;
|
|
strncpy(str, s + match[1].rm_so, len);
|
|
str[len] = '\0';
|
|
return str;
|
|
}
|
|
|
|
/* If there is no match, return the whole name minus the leading path */
|
|
return strdup(s);
|
|
}
|
|
|
|
/*
|
|
* Return the module version information.
|
|
*/
|
|
unsigned long
|
|
LoaderGetModuleVersion(ModuleDescPtr mod)
|
|
{
|
|
if (!mod || mod == (ModuleDescPtr) 1 || !mod->VersionInfo)
|
|
return 0;
|
|
|
|
return MODULE_VERSION_NUMERIC(mod->VersionInfo->majorversion,
|
|
mod->VersionInfo->minorversion,
|
|
mod->VersionInfo->patchlevel);
|
|
}
|