aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/hw/xfree86/loader/loadmod.c
diff options
context:
space:
mode:
authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/hw/xfree86/loader/loadmod.c
downloadvcxsrv-3562e78743202e43aec8727005182a2558117eca.tar.gz
vcxsrv-3562e78743202e43aec8727005182a2558117eca.tar.bz2
vcxsrv-3562e78743202e43aec8727005182a2558117eca.zip
Checked in the following released items:
xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz
Diffstat (limited to 'xorg-server/hw/xfree86/loader/loadmod.c')
-rw-r--r--xorg-server/hw/xfree86/loader/loadmod.c1295
1 files changed, 1295 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/loader/loadmod.c b/xorg-server/hw/xfree86/loader/loadmod.c
new file mode 100644
index 000000000..7f3bbe49c
--- /dev/null
+++ b/xorg-server/hw/xfree86/loader/loadmod.c
@@ -0,0 +1,1295 @@
+/*
+ * 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"
+#ifdef XINPUT
+#include "xf86Xinput.h"
+#endif
+#include "loader.h"
+#include "xf86Optrec.h"
+
+#include <sys/types.h>
+#include <regex.h>
+#include <dirent.h>
+#include <limits.h>
+
+#define TestFree(a) if (a) { xfree (a); a = NULL; }
+
+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 *,
+ int flags);
+
+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++)
+ xfree(*p);
+
+ xfree(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 = xstrdup(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 = xrealloc(list, (n + 2) * sizeof(char *));
+ if (!list) {
+ if (save) {
+ save[n] = NULL;
+ FreeStringList(save);
+ }
+ xfree(fullpath);
+ return NULL;
+ }
+ list[n] = xalloc(len + 1);
+ if (!list[n]) {
+ FreeStringList(list);
+ xfree(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;
+ xfree(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[] = {
+ "",
+ "fonts/",
+ "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 = xalloc((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)
+ xfree(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 = xalloc(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);
+ if (tmp_subdirlist)
+ xfree(tmp_subdirlist);
+ return NULL;
+ }
+ }
+ }
+ subdirs = xalloc((i * 2 + 1) * sizeof(char *));
+ if (!subdirs) {
+ if (tmp_subdirlist)
+ xfree(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] = xalloc(len))) {
+ while (--i >= 0)
+ xfree(subdirs[i]);
+ xfree(subdirs);
+ if (tmp_subdirlist)
+ xfree(tmp_subdirlist);
+ return NULL;
+ }
+ /* tack on the OS name */
+ sprintf(subdirs[i], "%s%s%s/", *s, slash, osname);
+ i++;
+ /* path as given */
+ subdirs[i] = xstrdup(*s);
+ i++;
+ s++;
+ if (indefault && !s) {
+ /* revert back to the main list */
+ indefault = FALSE;
+ s = stmp;
+ }
+ }
+ subdirs[i] = NULL;
+ }
+ if (tmp_subdirlist)
+ xfree(tmp_subdirlist);
+ return (const char **)subdirs;
+}
+
+static void
+FreeSubdirs(const char **subdirs)
+{
+ const char **s;
+
+ if (subdirs) {
+ for (s = subdirs; *s; s++)
+ xfree(*s);
+ xfree(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;
+ if ((stat(direntry->d_name, &stat_buf) == 0) && S_ISDIR(stat_buf.st_mode)) {
+ snprintf(tmpBuf, PATH_MAX, "%s/%s", dirpath, direntry->d_name);
+ if ((ret = FindModuleInSubdir(tmpBuf, module)))
+ break;
+ continue;
+ }
+
+ snprintf(tmpBuf, PATH_MAX, "lib%s.so", module);
+ if (strcmp(direntry->d_name, tmpBuf) == 0) {
+ ret = malloc(strlen(tmpBuf) + strlen(dirpath) + 2);
+ sprintf(ret, "%s/%s", dirpath, tmpBuf);
+ break;
+ }
+
+ snprintf(tmpBuf, PATH_MAX, "%s_drv.so", module);
+ if (strcmp(direntry->d_name, tmpBuf) == 0) {
+ ret = malloc(strlen(tmpBuf) + strlen(dirpath) + 2);
+ sprintf(ret, "%s/%s", dirpath, tmpBuf);
+ break;
+ }
+
+ snprintf(tmpBuf, PATH_MAX, "%s.so", module);
+ if (strcmp(direntry->d_name, tmpBuf) == 0) {
+ ret = malloc(strlen(tmpBuf) + strlen(dirpath) + 2);
+ sprintf(ret, "%s/%s", dirpath, tmpBuf);
+ 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)
+ xfree(dirpath);
+
+ return name;
+}
+
+_X_EXPORT 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 = xrealloc(listing,
+ (n + 2) * sizeof(char *));
+ if (!listing) {
+ if (save) {
+ save[n] = NULL;
+ FreeStringList(save);
+ }
+ FreePathList(pathlist);
+ FreeSubdirs(subdirs);
+ FreePatterns(patterns);
+ return NULL;
+ }
+ listing[n] = xalloc(len + 1);
+ if (!listing[n]) {
+ FreeStringList(listing);
+ FreePathList(pathlist);
+ FreeSubdirs(subdirs);
+ FreePatterns(patterns);
+ 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;
+ return listing;
+}
+
+_X_EXPORT 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);
+}
+
+_X_EXPORT ModuleDescPtr
+LoadSubModule(ModuleDescPtr parent, const char *module,
+ const char **subdirlist, const char **patternlist,
+ pointer options, const XF86ModReqInfo * modreq,
+ int *errmaj, int *errmin)
+{
+ ModuleDescPtr submod;
+
+ 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, LD_FLAG_GLOBAL);
+ if (submod && submod != (ModuleDescPtr) 1) {
+ parent->child = AddSibling(parent->child, submod);
+ submod->parent = parent;
+ }
+ return submod;
+}
+
+static ModuleDescPtr
+NewModuleDesc(const char *name)
+{
+ ModuleDescPtr mdp = xalloc(sizeof(ModuleDesc));
+
+ if (mdp) {
+ mdp->child = NULL;
+ mdp->sib = NULL;
+ mdp->parent = NULL;
+ mdp->name = xstrdup(name);
+ mdp->handle = -1;
+ mdp->SetupProc = NULL;
+ mdp->TearDownProc = NULL;
+ mdp->TearDownData = NULL;
+ }
+
+ return (mdp);
+}
+
+_X_EXPORT ModuleDescPtr
+DuplicateModule(ModuleDescPtr mod, ModuleDescPtr parent)
+{
+ ModuleDescPtr ret;
+
+ if (!mod)
+ return NULL;
+
+ ret = NewModuleDesc(mod->name);
+ if (ret == NULL)
+ return NULL;
+
+ if (LoaderHandleOpen(mod->handle) == -1)
+ return NULL;
+
+ ret->handle = mod->handle;
+ 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;
+
+ 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, int flags)
+{
+ XF86ModuleData *initdata = NULL;
+ char **pathlist = NULL;
+ char *found = NULL;
+ char *name = NULL;
+ char **path_elem = NULL;
+ char *p = NULL;
+ ModuleDescPtr ret = NULL;
+ int wasLoaded = 0;
+ PatternPtr patterns = NULL;
+ int noncanonical = 0;
+ char *m = NULL;
+ const char **cim;
+
+ xf86MsgVerb(X_INFO, 3, "LoadModule: \"%s\"\n", module);
+
+ for (cim = compiled_in_modules; *cim; cim++)
+ if (!strcmp (module, *cim))
+ {
+ xf86MsgVerb(X_INFO, 3, "Module \"%s\" already built-in\n", module);
+ return (ModuleDescPtr) 1;
+ }
+
+ 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;
+ }
+ 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, name, 0,
+ errmaj, errmin, &wasLoaded, flags);
+ if (ret->handle < 0)
+ goto LoadModule_fail;
+
+ /* 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.
+ */
+ p = xalloc(strlen(name) + strlen("ModuleData") + 1);
+ if (!p) {
+ if (errmaj)
+ *errmaj = LDR_NOMEM;
+ if (errmin)
+ *errmin = 0;
+ goto LoadModule_fail;
+ }
+ strcpy(p, name);
+ strcat(p, "ModuleData");
+ initdata = LoaderSymbol(p);
+ if (initdata) {
+ ModuleSetupProc setup;
+ ModuleTearDownProc teardown;
+ XF86ModuleVersionInfo *vers;
+
+ vers = initdata->vers;
+ setup = initdata->setup;
+ teardown = initdata->teardown;
+
+ if (!wasLoaded) {
+ 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);
+ TestFree(found);
+ TestFree(name);
+ TestFree(p);
+
+ /*
+ * If you need to do something to keep the
+ * instruction cache in sync with the main
+ * memory before jumping to that code, you may
+ * do it here.
+ */
+#ifdef __alpha__
+ istream_mem_barrier();
+#endif
+ 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, LD_FLAG_GLOBAL);
+}
+
+void
+UnloadModule(ModuleDescPtr mod)
+{
+ UnloadModuleOrDriver(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->handle);
+
+ if (mod->child)
+ UnloadModuleOrDriver(mod->child);
+ if (mod->sib)
+ UnloadModuleOrDriver(mod->sib);
+ TestFree(mod->name);
+ xfree(mod);
+#ifdef __alpha__
+ istream_mem_barrier();
+#endif
+}
+
+_X_EXPORT void
+UnloadSubModule(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->handle);
+
+ RemoveChild(mod);
+
+ if (mod->child)
+ UnloadModuleOrDriver(mod->child);
+
+ TestFree(mod->name);
+ xfree(mod);
+}
+
+static void
+FreeModuleDesc(ModuleDescPtr head)
+{
+ ModuleDescPtr sibs, prev;
+
+ if (head == (ModuleDescPtr) 1)
+ return;
+ if (head->child)
+ FreeModuleDesc(head->child);
+ sibs = head;
+ while (sibs) {
+ prev = sibs;
+ sibs = sibs->sib;
+ TestFree(prev->name);
+ xfree(prev);
+ }
+}
+
+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;
+}
+
+_X_EXPORT 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 = xalloc(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 xstrdup(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);
+}