91141 2005-05-02 02:53 0000 Sed filter in init.d/xmail fails to copy ld-linux.so.2 causing XMail to segfault 2005-06-06 06:24:03 0000 1 1 1 Unclassified Gentoo Linux Applications unspecified All Linux RESOLVED FIXED P2 major --- 39817 1 quinox_san_@hotmail.com net-mail@gentoo.org quinox_san_@hotmail.com 2005-05-02 02:53:52 0000 Hi, there is a problem with the /etc/init.d/xmail file, it fails to copy lib files if they are listed in a specific way. I found this out after upgrading my glibc version and xmail segfaulting. I traced it down to an outdated ld-linux.so.2 in my /chroot/xmail/lib . This is caused by the sed filter from the init file that fails to copy the file. The output of ldd /var/MailRoot/bin/XMail: linux-gate.so.1 => (0xffffe000) libdl.so.2 => /lib/libdl.so.2 (0xb7fd0000) libpthread.so.0 => /lib/libpthread.so.0 (0xb7f7d000) libstdc++.so.5 => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libstdc++.so.5 (0xb7eb1000) libm.so.6 => /lib/libm.so.6 (0xb7e8c000) libgcc_s.so.1 => /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 (0xb7e83000) libc.so.6 => /lib/libc.so.6 (0xb7d57000) /lib/ld-linux.so.2 (0xb7fea000) After applying the sed filter -n 's/[[:blank:]]*[^=]*=>\([^(]*\).*/\1/p', these files be copied to the chrooted lib directory: /lib/libdl.so.2 /lib/libpthread.so.0 /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libstdc++.so.5 /lib/libm.so.6 /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 /lib/libc.so.6 Clearly the ld-linux.so.2 library is missing. This is caused by the requirement that a line should contain a =>. This problem is solvable by using a slightly modified sed filter. Using sed -n 's/[[:blank:]]*\([^=]*\=>\)\? \([^(]*\) .*/\2/p;' the output will be: /lib/libdl.so.2 /lib/libpthread.so.0 /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libstdc++.so.5 /lib/libm.so.6 /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.5-20050130/libgcc_s.so.1 /lib/libc.so.6 /lib/ld-linux.so.2 which is correct for my system. This script might break things if the ldd output lines without a => can contain weird stuff, I can't say because I'm no ldd expert. Reproducible: Always Steps to Reproduce: 1. Upgrading glibc 2. starting the chrooted version of xmail using /etc/init.d/xmail start Actual Results: XMail will not start because of a segmentation fault Expected Results: XMail should have started Fix supplied, needs verification concerning the ldd output quinox_san_@hotmail.com 2005-05-02 02:59:35 0000 The fixed sed filter shouldn't contain a newline in it. Patchfile (-Naur) for the fixed init.d/xmail file: --- /usr/portage/mail-mta/xmail/files/xmail.initd 2004-07-15 01:05:55.000000000 +0200 +++ /etc/init.d/xmail 2005-05-02 11:58:11.000000000 +0200 @@ -70,7 +70,7 @@ chown -R xmail:xmail ${CHROOT} cp `ldd ${CHROOT}${MAIL_ROOT}/bin/XMail |\ - sed -n 's/[[:blank:]]*[^=]*=>\([^(]*\).*/\1/p'` ${CHROOT}/lib/ + sed -n 's/[[:blank:]]*\([^=]*\=>\)\? \([^(]*\).*/\2/p;'` ${CHROOT}/lib/ start-stop-daemon --start -c xmail -r ${CHROOT} \ --startas ${MAIL_EXEC} --pidfile=${MAIL_PID} -- \ ${MAIL_CMD_LINE} ticho@gentoo.org 2005-06-06 06:24:03 0000 Fixed, thanks. Sorry it took a while, it's just no one here is using xmail. :/