Masa's blog

_ Solved! firefox + kinput2 = pull-down menu don't work !?

When I use kinput2 for japanese input method with firefox, pull-down menu of firefox don't work!

I have to apply a patch for libX11 and re-build it to solve a problem(see Fix bogus timestamp generated by XIM).

you can get a source of libX11 from Slackware site.

$ tar xvvf libX11-1.5.0.tar.xz
$ cd libX11-1.5.0/

and you can get a patch for libX11 from here

$ cat /_somewhere_/Fix-bogus-timestamp-generated-by-XIM.patch
diff --git a/modules/im/ximcp/imDefLkup.c b/modules/im/ximcp/imDefLkup.c
index 0a9553a..7add1f2 100644
--- a/modules/im/ximcp/imDefLkup.c
+++ b/modules/im/ximcp/imDefLkup.c
@@ -269,6 +269,8 @@ _XimForwardEventCore(
     int		 ret_code;
     INT16	 len;

+    bzero(buf32, sizeof(buf32)); /* valgrind noticed uninitialized memory use! */
+
     if (!(len = _XimSetEventToWire(ev, (xEvent *)&buf_s[4])))
 	return False;				/* X event */

@@ -706,6 +708,8 @@ _XimCommitRecv(

     MARK_FABRICATED(im);

+    bzero(&ev, sizeof(ev));	/* uninitialized : found when running kterm under valgrind */
+
     ev.type = KeyPress;
     ev.send_event = False;
     ev.display = im->core.display;
@@ -713,6 +717,15 @@ _XimCommitRecv(
     ev.keycode = 0;
     ev.state = 0;

+    ev.time = 0L;
+    ev.serial = LastKnownRequestProcessed(im->core.display);
+    /* FIXME :
+       I wish there were COMMENTs (!) about the data passed around.
+    */
+#if 0
+    fprintf(stderr,"%s,%d: putback k press   FIXED ev.time=0 ev.serial=%lu\n", __FILE__, __LINE__, ev.serial);
+#endif
+
     XPutBackEvent(im->core.display, (XEvent *)&ev);

     return True;
diff --git a/modules/im/ximcp/imTrans.c b/modules/im/ximcp/imTrans.c
index 4bdecb2..a8cd95e 100644
--- a/modules/im/ximcp/imTrans.c
+++ b/modules/im/ximcp/imTrans.c
@@ -222,12 +222,20 @@ _XimTransInternalConnection(

     if (spec->is_putback)
 	return;
+
+    bzero(&ev, sizeof(ev));	/* FIXME: other fields may be accessed, too. */
     kev = (XKeyEvent *)&ev;
     kev->type = KeyPress;
     kev->send_event = False;
     kev->display = im->core.display;
     kev->window = spec->window;
     kev->keycode = 0;
+    kev->time = 0L;
+    kev->serial = LastKnownRequestProcessed(im->core.display);
+#if 0
+    fprintf(stderr,"%s,%d: putback FIXED kev->time=0 kev->serial=%lu\n", __FILE__, __LINE__, kev->serial);
+#endif
+
     XPutBackEvent(im->core.display, &ev);
     XFlush(im->core.display);
     spec->is_putback = True;

apply a patch and rebuild libX11!

$ patch -p1 </_somewhere_/Fix-bogus-timestamp-generated-by-XIM.patch
$ export LC_ALL=ja_JP.UTF-8
$ export LANG=ja_JP.UTF-8
$ ./configure \
 --prefix=/usr \
 --libdir=/usr/lib \
 --sysconfdir=/etc \
 --localstatedir=/var \
 --infodir=/usr/info \
 --mandir=/usr/man \
 --disable-static
$ make
$ su
# make install
# ldconfig

and then everything gose fine ;)

_ Slackware-14.2環境で、dhcpcd-10.0.2からdhcpcd-10.0.3にバージョンアップを試みたところ、explicit_bzeroのリンクに失敗した。 explicit_bzeroはglibc-2.25から導入された関数で、Slacklware-14.2はglibc-2.23止まりのためこのような結果となった。 explicit_bzeroを単純にbzeroに置き換えてもビルドは通るが、プロセス内のメモリに秘匿性の高い情報が残り、覗き見される可能性があるらしい。

そこで、glibc-2.25にアップグレードを行った。公式には既に更新は止まっているので、自己責任で行うこととなる。

手順は

• https://mirrors.slackware.com/slackware/slackware-14.2/patches/source/glibc/よりSlackBuild環境をダウンロード
• SlackBuild環境内のソースをglibc-2.25.tar.xzに置き換える
• glibc.SlackBuild内の2行をコメントアウトする(エラーとなるパッチを除外する)

###  zcat $CWD/glibc-c-utf8-locale.patch.gz | patch -p1 --verbose || exit 1
###  zcat $CWD/glibc.6a824767.dont.assert.on.older.intel.cpus.diff.gz | patch -p1 --verbose || exit 1

• sh glibc.SlackBuild
• ビルドされたパッケージで更新を行う

# init s
# upgradepkg /glibc-tmp-... snip .../glibc-2.25-i586-4_slack14.2.txz
# upgradepkg /glibc-tmp-... snip .../glibc-i18n-2.25-i586-4_slack14.2.txz
# upgradepkg /glibc-tmp-... snip .../glibc-profile-2.25-i586-4_slack14.2.txz
# upgradepkg /glibc-tmp-... snip .../glibc-solibs-2.25-i586-4_slack14.2.txz
# ldconfig
# reboot

最後に、/etc/slackpkg/blacklistにglibcを追加しておく

glibc

この後、dhcpcd-10.0.3の方もhttps://mirrors.slackware.com/slackware/slackware-current/source/n/dhcpcd/よりSlackBuild環境&ソースを取得し、アップデート完了。