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Diffstat (limited to 'xorg-server/hw/xfree86/loader/loadmod.c')
-rw-r--r--xorg-server/hw/xfree86/loader/loadmod.c2522
1 files changed, 1261 insertions, 1261 deletions
diff --git a/xorg-server/hw/xfree86/loader/loadmod.c b/xorg-server/hw/xfree86/loader/loadmod.c
index 46ce68b86..3e59887db 100644
--- a/xorg-server/hw/xfree86/loader/loadmod.c
+++ b/xorg-server/hw/xfree86/loader/loadmod.c
@@ -1,1261 +1,1261 @@
-/*
- * 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) 1997-2002 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 "os.h"
-/* For stat() and related stuff */
-#define NO_OSLIB_PROTOTYPES
-#include "xf86_OSlib.h"
-#define LOADERDECLARATIONS
-#include "loaderProcs.h"
-#include "misc.h"
-#include "xf86.h"
-#include "xf86Priv.h"
-#include "xf86Xinput.h"
-#include "loader.h"
-#include "xf86Optrec.h"
-
-#include <sys/types.h>
-#include <regex.h>
-#include <dirent.h>
-#include <limits.h>
-
-typedef struct _pattern {
- const char *pattern;
- regex_t rex;
-} PatternRec, *PatternPtr;
-
-/* Prototypes for static functions */
-static char *FindModule(const char *, const char *, const char **,
- PatternPtr);
-static Bool CheckVersion(const char *, XF86ModuleVersionInfo *,
- const XF86ModReqInfo *);
-static void UnloadModuleOrDriver(ModuleDescPtr mod);
-static char *LoaderGetCanonicalName(const char *, PatternPtr);
-static void RemoveChild(ModuleDescPtr);
-static ModuleDescPtr doLoadModule(const char *, const char *, const char **,
- const char **, pointer,
- const XF86ModReqInfo *, int *, int *);
-
-const ModuleVersions LoaderVersionInfo = {
- XORG_VERSION_CURRENT,
- ABI_ANSIC_VERSION,
- ABI_VIDEODRV_VERSION,
- ABI_XINPUT_VERSION,
- ABI_EXTENSION_VERSION,
- ABI_FONT_VERSION
-};
-
-static void
-FreeStringList(char **paths)
-{
- char **p;
-
- if (!paths)
- return;
-
- for (p = paths; *p; p++)
- free(*p);
-
- free(paths);
-}
-
-static char **defaultPathList = NULL;
-
-static Bool
-PathIsAbsolute(const char *path)
-{
- return *path == '/';
-}
-
-/*
- * Convert a comma-separated path into a NULL-terminated array of path
- * elements, rejecting any that are not full absolute paths, and appending
- * a '/' when it isn't already present.
- */
-static char **
-InitPathList(const char *path)
-{
- char *fullpath = NULL;
- char *elem = NULL;
- char **list = NULL, **save = NULL;
- int len;
- int addslash;
- int n = 0;
-
- if (!path)
- return defaultPathList;
-
- fullpath = strdup(path);
- if (!fullpath)
- return NULL;
- elem = strtok(fullpath, ",");
- while (elem) {
- if (PathIsAbsolute(elem))
- {
- len = strlen(elem);
- addslash = (elem[len - 1] != '/');
- if (addslash)
- len++;
- save = list;
- list = realloc(list, (n + 2) * sizeof(char *));
- if (!list) {
- if (save) {
- save[n] = NULL;
- FreeStringList(save);
- }
- free(fullpath);
- return NULL;
- }
- list[n] = malloc(len + 1);
- if (!list[n]) {
- FreeStringList(list);
- free(fullpath);
- return NULL;
- }
- strcpy(list[n], elem);
- if (addslash) {
- list[n][len - 1] = '/';
- list[n][len] = '\0';
- }
- n++;
- }
- elem = strtok(NULL, ",");
- }
- if (list)
- list[n] = NULL;
- free(fullpath);
- return list;
-}
-
-static void
-FreePathList(char **pathlist)
-{
- if (pathlist && pathlist != defaultPathList)
- FreeStringList(pathlist);
-}
-
-void
-LoaderSetPath(const char *path)
-{
- if (!path)
- return;
-
- defaultPathList = InitPathList(path);
-}
-
-/* Standard set of module subdirectories to search, in order of preference */
-static const char *stdSubdirs[] = {
- "",
- "input/",
- "drivers/",
- "multimedia/",
- "extensions/",
- "internal/",
- NULL
-};
-
-/*
- * Standard set of module name patterns to check, in order of preference
- * These are regular expressions (suitable for use with POSIX regex(3)).
- *
- * This list assumes that you're an ELFish platform and therefore your
- * shared libraries are named something.so. If we're ever nuts enough
- * to port this DDX to, say, Darwin, we'll need to fix this.
- */
-static PatternRec stdPatterns[] = {
- {"^lib(.*)\\.so$",},
- {"(.*)_drv\\.so$",},
- {"(.*)\\.so$",},
- {NULL,}
-};
-
-static PatternPtr
-InitPatterns(const char **patternlist)
-{
- char errmsg[80];
- int i, e;
- PatternPtr patterns = NULL;
- PatternPtr p = NULL;
- static int firstTime = 1;
- const char **s;
-
- if (firstTime) {
- /* precompile stdPatterns */
- firstTime = 0;
- for (p = stdPatterns; p->pattern; p++)
- if ((e = regcomp(&p->rex, p->pattern, REG_EXTENDED)) != 0) {
- regerror(e, &p->rex, errmsg, sizeof(errmsg));
- FatalError("InitPatterns: regcomp error for `%s': %s\n",
- p->pattern, errmsg);
- }
- }
-
- if (patternlist) {
- for (i = 0, s = patternlist; *s; i++, s++)
- if (*s == DEFAULT_LIST)
- i += sizeof(stdPatterns) / sizeof(stdPatterns[0]) - 1 - 1;
- patterns = malloc((i + 1) * sizeof(PatternRec));
- if (!patterns) {
- return NULL;
- }
- for (i = 0, s = patternlist; *s; i++, s++)
- if (*s != DEFAULT_LIST) {
- p = patterns + i;
- p->pattern = *s;
- if ((e = regcomp(&p->rex, p->pattern, REG_EXTENDED)) != 0) {
- regerror(e, &p->rex, errmsg, sizeof(errmsg));
- ErrorF("InitPatterns: regcomp error for `%s': %s\n",
- p->pattern, errmsg);
- i--;
- }
- } else {
- for (p = stdPatterns; p->pattern; p++, i++)
- patterns[i] = *p;
- if (p != stdPatterns)
- i--;
- }
- patterns[i].pattern = NULL;
- } else
- patterns = stdPatterns;
- return patterns;
-}
-
-static void
-FreePatterns(PatternPtr patterns)
-{
- if (patterns && patterns != stdPatterns)
- free(patterns);
-}
-
-static const char **
-InitSubdirs(const char **subdirlist)
-{
- int i;
- const char **tmp_subdirlist = NULL;
- char **subdirs = NULL;
- const char **s, **stmp = NULL;
- const char *osname;
- const char *slash;
- int oslen = 0, len;
- Bool indefault;
-
- if (subdirlist == NULL) {
- subdirlist = tmp_subdirlist = malloc(2 * sizeof(char *));
- if (subdirlist == NULL)
- return NULL;
- subdirlist[0] = DEFAULT_LIST;
- subdirlist[1] = NULL;
- }
-
- LoaderGetOS(&osname, NULL, NULL, NULL);
- oslen = strlen(osname);
-
- {
- /* Count number of entries and check for invalid paths */
- for (i = 0, s = subdirlist; *s; i++, s++) {
- if (*s == DEFAULT_LIST) {
- i += sizeof(stdSubdirs) / sizeof(stdSubdirs[0]) - 1 - 1;
- } else {
- /*
- * Path validity check. Don't allow absolute paths, or
- * paths containing "..". To catch absolute paths on
- * platforms that use driver letters, don't allow the ':'
- * character to appear at all.
- */
- if (**s == '/' || **s == '\\' || strchr(*s, ':') ||
- strstr(*s, "..")) {
- xf86Msg(X_ERROR, "InitSubdirs: Bad subdir: \"%s\"\n", *s);
- free(tmp_subdirlist);
- return NULL;
- }
- }
- }
- subdirs = malloc((i * 2 + 1) * sizeof(char *));
- if (!subdirs) {
- free(tmp_subdirlist);
- return NULL;
- }
- 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 = "/";
- len++;
- } else
- slash = "";
- len += oslen + 2;
- if (!(subdirs[i] = malloc(len))) {
- while (--i >= 0)
- free(subdirs[i]);
- free(subdirs);
- free(tmp_subdirlist);
- return NULL;
- }
- /* tack on the OS name */
- sprintf(subdirs[i], "%s%s%s/", *s, slash, osname);
- i++;
- /* path as given */
- subdirs[i] = strdup(*s);
- 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;
- }
-
- snprintf(tmpBuf, PATH_MAX, "lib%s.so", module);
- if (strcmp(direntry->d_name, tmpBuf) == 0) {
- if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
- ret = NULL;
- break;
- }
-
- snprintf(tmpBuf, PATH_MAX, "%s_drv.so", module);
- if (strcmp(direntry->d_name, tmpBuf) == 0) {
- if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
- ret = NULL;
- break;
- }
-
- snprintf(tmpBuf, PATH_MAX, "%s.so", module);
- 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 *dirpath = NULL;
- char *name = NULL;
- int dirlen;
- const char **subdirs = NULL;
- const char **s;
-
- dirpath = (char *)dirname;
- if (strlen(dirpath) > PATH_MAX)
- return NULL;
-
- subdirs = InitSubdirs(subdirlist);
- if (!subdirs)
- return NULL;
-
- for (s = subdirs; *s; s++) {
- if ((dirlen = strlen(dirpath) + strlen(*s)) > PATH_MAX)
- continue;
- strcpy(buf, dirpath);
- strcat(buf, *s);
- if ((name = FindModuleInSubdir(buf, module)))
- break;
- }
-
- FreeSubdirs(subdirs);
- if (dirpath != dirname)
- free(dirpath);
-
- 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;
- int n = 0;
-
- if (!(pathlist = InitPathList(NULL)))
- return NULL;
- if (!(subdirs = InitSubdirs(subdirlist))) {
- FreePathList(pathlist);
- return NULL;
- }
- if (!(patterns = InitPatterns(patternlist))) {
- FreePathList(pathlist);
- FreeSubdirs(subdirs);
- return NULL;
- }
-
- 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);
- }
- FreePathList(pathlist);
- FreeSubdirs(subdirs);
- FreePatterns(patterns);
- closedir(d);
- return NULL;
- }
- listing[n] = malloc(len + 1);
- if (!listing[n]) {
- FreeStringList(listing);
- FreePathList(pathlist);
- FreeSubdirs(subdirs);
- FreePatterns(patterns);
- closedir(d);
- return NULL;
- }
- strncpy(listing[n], dp->d_name + match[1].rm_so,
- len);
- listing[n][len] = '\0';
- n++;
- break;
- }
- }
- }
- closedir(d);
- }
- }
- }
- if (listing)
- listing[n] = NULL;
-
- FreePathList(pathlist);
- FreeSubdirs(subdirs);
- FreePatterns(patterns);
- return listing;
-}
-
-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;
- int errmaj, errmin;
-
- if (!mod)
- return NULL;
-
- ret = NewModuleDesc(mod->name);
- if (ret == NULL)
- return NULL;
-
- if (!(ret->handle = LoaderOpen(mod->path, &errmaj, &errmin))) {
- free(ret);
- return NULL;
- }
-
- ret->SetupProc = mod->SetupProc;
- ret->TearDownProc = mod->TearDownProc;
- ret->TearDownData = NULL;
- 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",
- 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 < 0)
- 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 = LoaderSymbol(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 is OK for external modules */
- if (options == EXTERN_MODULE)
- goto LoadModule_exit;
-
- /* 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;
-
- xf86MsgVerb(X_INFO, 3, "UnloadModule: \"%s\"\n", mod->name);
-
- 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;
-
- if (mod == NULL || mod->name == NULL)
- return;
-
- xf86MsgVerb(X_INFO, 3, "UnloadSubModule: \"%s\"\n", mod->name);
-
- if ((mod->TearDownProc) && (mod->TearDownData))
- mod->TearDownProc(mod->TearDownData);
- LoaderUnload(mod->name, mod->handle);
-
- RemoveChild(mod);
-
- if (mod->child)
- UnloadModuleOrDriver(mod->child);
-
- free(mod->path);
- free(mod->name);
- free(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;
- 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);
-}
+/*
+ * 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) 1997-2002 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 "os.h"
+/* For stat() and related stuff */
+#define NO_OSLIB_PROTOTYPES
+#include "xf86_OSlib.h"
+#define LOADERDECLARATIONS
+#include "loaderProcs.h"
+#include "misc.h"
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86Xinput.h"
+#include "loader.h"
+#include "xf86Optrec.h"
+
+#include <sys/types.h>
+#include <regex.h>
+#include <dirent.h>
+#include <limits.h>
+
+typedef struct _pattern {
+ const char *pattern;
+ regex_t rex;
+} PatternRec, *PatternPtr;
+
+/* Prototypes for static functions */
+static char *FindModule(const char *, const char *, const char **,
+ PatternPtr);
+static Bool CheckVersion(const char *, XF86ModuleVersionInfo *,
+ const XF86ModReqInfo *);
+static void UnloadModuleOrDriver(ModuleDescPtr mod);
+static char *LoaderGetCanonicalName(const char *, PatternPtr);
+static void RemoveChild(ModuleDescPtr);
+static ModuleDescPtr doLoadModule(const char *, const char *, const char **,
+ const char **, pointer,
+ const XF86ModReqInfo *, int *, int *);
+
+const ModuleVersions LoaderVersionInfo = {
+ XORG_VERSION_CURRENT,
+ ABI_ANSIC_VERSION,
+ ABI_VIDEODRV_VERSION,
+ ABI_XINPUT_VERSION,
+ ABI_EXTENSION_VERSION,
+ ABI_FONT_VERSION
+};
+
+static void
+FreeStringList(char **paths)
+{
+ char **p;
+
+ if (!paths)
+ return;
+
+ for (p = paths; *p; p++)
+ free(*p);
+
+ free(paths);
+}
+
+static char **defaultPathList = NULL;
+
+static Bool
+PathIsAbsolute(const char *path)
+{
+ return *path == '/';
+}
+
+/*
+ * Convert a comma-separated path into a NULL-terminated array of path
+ * elements, rejecting any that are not full absolute paths, and appending
+ * a '/' when it isn't already present.
+ */
+static char **
+InitPathList(const char *path)
+{
+ char *fullpath = NULL;
+ char *elem = NULL;
+ char **list = NULL, **save = NULL;
+ int len;
+ int addslash;
+ int n = 0;
+
+ if (!path)
+ return defaultPathList;
+
+ fullpath = strdup(path);
+ if (!fullpath)
+ return NULL;
+ elem = strtok(fullpath, ",");
+ while (elem) {
+ if (PathIsAbsolute(elem))
+ {
+ len = strlen(elem);
+ addslash = (elem[len - 1] != '/');
+ if (addslash)
+ len++;
+ save = list;
+ list = realloc(list, (n + 2) * sizeof(char *));
+ if (!list) {
+ if (save) {
+ save[n] = NULL;
+ FreeStringList(save);
+ }
+ free(fullpath);
+ return NULL;
+ }
+ list[n] = malloc(len + 1);
+ if (!list[n]) {
+ FreeStringList(list);
+ free(fullpath);
+ return NULL;
+ }
+ strcpy(list[n], elem);
+ if (addslash) {
+ list[n][len - 1] = '/';
+ list[n][len] = '\0';
+ }
+ n++;
+ }
+ elem = strtok(NULL, ",");
+ }
+ if (list)
+ list[n] = NULL;
+ free(fullpath);
+ return list;
+}
+
+static void
+FreePathList(char **pathlist)
+{
+ if (pathlist && pathlist != defaultPathList)
+ FreeStringList(pathlist);
+}
+
+void
+LoaderSetPath(const char *path)
+{
+ if (!path)
+ return;
+
+ defaultPathList = InitPathList(path);
+}
+
+/* Standard set of module subdirectories to search, in order of preference */
+static const char *stdSubdirs[] = {
+ "",
+ "input/",
+ "drivers/",
+ "multimedia/",
+ "extensions/",
+ "internal/",
+ NULL
+};
+
+/*
+ * Standard set of module name patterns to check, in order of preference
+ * These are regular expressions (suitable for use with POSIX regex(3)).
+ *
+ * This list assumes that you're an ELFish platform and therefore your
+ * shared libraries are named something.so. If we're ever nuts enough
+ * to port this DDX to, say, Darwin, we'll need to fix this.
+ */
+static PatternRec stdPatterns[] = {
+ {"^lib(.*)\\.so$",},
+ {"(.*)_drv\\.so$",},
+ {"(.*)\\.so$",},
+ {NULL,}
+};
+
+static PatternPtr
+InitPatterns(const char **patternlist)
+{
+ char errmsg[80];
+ int i, e;
+ PatternPtr patterns = NULL;
+ PatternPtr p = NULL;
+ static int firstTime = 1;
+ const char **s;
+
+ if (firstTime) {
+ /* precompile stdPatterns */
+ firstTime = 0;
+ for (p = stdPatterns; p->pattern; p++)
+ if ((e = regcomp(&p->rex, p->pattern, REG_EXTENDED)) != 0) {
+ regerror(e, &p->rex, errmsg, sizeof(errmsg));
+ FatalError("InitPatterns: regcomp error for `%s': %s\n",
+ p->pattern, errmsg);
+ }
+ }
+
+ if (patternlist) {
+ for (i = 0, s = patternlist; *s; i++, s++)
+ if (*s == DEFAULT_LIST)
+ i += sizeof(stdPatterns) / sizeof(stdPatterns[0]) - 1 - 1;
+ patterns = malloc((i + 1) * sizeof(PatternRec));
+ if (!patterns) {
+ return NULL;
+ }
+ for (i = 0, s = patternlist; *s; i++, s++)
+ if (*s != DEFAULT_LIST) {
+ p = patterns + i;
+ p->pattern = *s;
+ if ((e = regcomp(&p->rex, p->pattern, REG_EXTENDED)) != 0) {
+ regerror(e, &p->rex, errmsg, sizeof(errmsg));
+ ErrorF("InitPatterns: regcomp error for `%s': %s\n",
+ p->pattern, errmsg);
+ i--;
+ }
+ } else {
+ for (p = stdPatterns; p->pattern; p++, i++)
+ patterns[i] = *p;
+ if (p != stdPatterns)
+ i--;
+ }
+ patterns[i].pattern = NULL;
+ } else
+ patterns = stdPatterns;
+ return patterns;
+}
+
+static void
+FreePatterns(PatternPtr patterns)
+{
+ if (patterns && patterns != stdPatterns)
+ free(patterns);
+}
+
+static const char **
+InitSubdirs(const char **subdirlist)
+{
+ int i;
+ const char **tmp_subdirlist = NULL;
+ char **subdirs = NULL;
+ const char **s, **stmp = NULL;
+ const char *osname;
+ const char *slash;
+ int oslen = 0, len;
+ Bool indefault;
+
+ if (subdirlist == NULL) {
+ subdirlist = tmp_subdirlist = malloc(2 * sizeof(char *));
+ if (subdirlist == NULL)
+ return NULL;
+ subdirlist[0] = DEFAULT_LIST;
+ subdirlist[1] = NULL;
+ }
+
+ LoaderGetOS(&osname, NULL, NULL, NULL);
+ oslen = strlen(osname);
+
+ {
+ /* Count number of entries and check for invalid paths */
+ for (i = 0, s = subdirlist; *s; i++, s++) {
+ if (*s == DEFAULT_LIST) {
+ i += sizeof(stdSubdirs) / sizeof(stdSubdirs[0]) - 1 - 1;
+ } else {
+ /*
+ * Path validity check. Don't allow absolute paths, or
+ * paths containing "..". To catch absolute paths on
+ * platforms that use driver letters, don't allow the ':'
+ * character to appear at all.
+ */
+ if (**s == '/' || **s == '\\' || strchr(*s, ':') ||
+ strstr(*s, "..")) {
+ xf86Msg(X_ERROR, "InitSubdirs: Bad subdir: \"%s\"\n", *s);
+ free(tmp_subdirlist);
+ return NULL;
+ }
+ }
+ }
+ subdirs = malloc((i * 2 + 1) * sizeof(char *));
+ if (!subdirs) {
+ free(tmp_subdirlist);
+ return NULL;
+ }
+ 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 = "/";
+ len++;
+ } else
+ slash = "";
+ len += oslen + 2;
+ if (!(subdirs[i] = malloc(len))) {
+ while (--i >= 0)
+ free(subdirs[i]);
+ free(subdirs);
+ free(tmp_subdirlist);
+ return NULL;
+ }
+ /* tack on the OS name */
+ sprintf(subdirs[i], "%s%s%s/", *s, slash, osname);
+ i++;
+ /* path as given */
+ subdirs[i] = strdup(*s);
+ 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;
+ }
+
+ snprintf(tmpBuf, PATH_MAX, "lib%s.so", module);
+ if (strcmp(direntry->d_name, tmpBuf) == 0) {
+ if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
+ ret = NULL;
+ break;
+ }
+
+ snprintf(tmpBuf, PATH_MAX, "%s_drv.so", module);
+ if (strcmp(direntry->d_name, tmpBuf) == 0) {
+ if (asprintf(&ret, "%s%s", dirpath, tmpBuf) == -1)
+ ret = NULL;
+ break;
+ }
+
+ snprintf(tmpBuf, PATH_MAX, "%s.so", module);
+ 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 *dirpath = NULL;
+ char *name = NULL;
+ int dirlen;
+ const char **subdirs = NULL;
+ const char **s;
+
+ dirpath = (char *)dirname;
+ if (strlen(dirpath) > PATH_MAX)
+ return NULL;
+
+ subdirs = InitSubdirs(subdirlist);
+ if (!subdirs)
+ return NULL;
+
+ for (s = subdirs; *s; s++) {
+ if ((dirlen = strlen(dirpath) + strlen(*s)) > PATH_MAX)
+ continue;
+ strcpy(buf, dirpath);
+ strcat(buf, *s);
+ if ((name = FindModuleInSubdir(buf, module)))
+ break;
+ }
+
+ FreeSubdirs(subdirs);
+ if (dirpath != dirname)
+ free(dirpath);
+
+ 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;
+ int n = 0;
+
+ if (!(pathlist = InitPathList(NULL)))
+ return NULL;
+ if (!(subdirs = InitSubdirs(subdirlist))) {
+ FreePathList(pathlist);
+ return NULL;
+ }
+ if (!(patterns = InitPatterns(patternlist))) {
+ FreePathList(pathlist);
+ FreeSubdirs(subdirs);
+ return NULL;
+ }
+
+ 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);
+ }
+ FreePathList(pathlist);
+ FreeSubdirs(subdirs);
+ FreePatterns(patterns);
+ closedir(d);
+ return NULL;
+ }
+ listing[n] = malloc(len + 1);
+ if (!listing[n]) {
+ FreeStringList(listing);
+ FreePathList(pathlist);
+ FreeSubdirs(subdirs);
+ FreePatterns(patterns);
+ closedir(d);
+ return NULL;
+ }
+ strncpy(listing[n], dp->d_name + match[1].rm_so,
+ len);
+ listing[n][len] = '\0';
+ n++;
+ break;
+ }
+ }
+ }
+ closedir(d);
+ }
+ }
+ }
+ if (listing)
+ listing[n] = NULL;
+
+ FreePathList(pathlist);
+ FreeSubdirs(subdirs);
+ FreePatterns(patterns);
+ return listing;
+}
+
+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;
+ int errmaj, errmin;
+
+ if (!mod)
+ return NULL;
+
+ ret = NewModuleDesc(mod->name);
+ if (ret == NULL)
+ return NULL;
+
+ if (!(ret->handle = LoaderOpen(mod->path, &errmaj, &errmin))) {
+ free(ret);
+ return NULL;
+ }
+
+ ret->SetupProc = mod->SetupProc;
+ ret->TearDownProc = mod->TearDownProc;
+ ret->TearDownData = NULL;
+ 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",
+ 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 < 0)
+ 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 = LoaderSymbol(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 is OK for external modules */
+ if (options == EXTERN_MODULE)
+ goto LoadModule_exit;
+
+ /* 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;
+
+ xf86MsgVerb(X_INFO, 3, "UnloadModule: \"%s\"\n", mod->name);
+
+ 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;
+
+ if (mod == NULL || mod->name == NULL)
+ return;
+
+ xf86MsgVerb(X_INFO, 3, "UnloadSubModule: \"%s\"\n", mod->name);
+
+ if ((mod->TearDownProc) && (mod->TearDownData))
+ mod->TearDownProc(mod->TearDownData);
+ LoaderUnload(mod->name, mod->handle);
+
+ RemoveChild(mod);
+
+ if (mod->child)
+ UnloadModuleOrDriver(mod->child);
+
+ free(mod->path);
+ free(mod->name);
+ free(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;
+ 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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 09:12:43 +0000