Bug#45836: Broken symlinks /usr/lib/foo.so -> /lib/foo-x.y.z.so
Package: libc6
Version: 2.1.2-2
I'm not sure this is a libc6 issue. It could merely be a problem with
an older version. I'm guessing this is a duplicate of #34592 but I
thought I'd send this in just to be sure.
There's a lot of broken symlinks in my /usr/lib directory -- full
listing included below. All of the files the symlinks point to exist,
only their names have changed because their version number has. So the
symlinks are broken. They can be repaired by hand, but I couldn't find
a script to do that automatically, so I guess nobody has anticipated
this situation in the first place.
It would appear that these symlinks were installed by libc6-dev and
haven't been updated by other programs which updated those libraries.
What I think is that my previous libc6 upgrade broke these.
Unfortunately, while debugging this, I managed to repair the links and
I'm not particularly eager to go back and break them again ...
Detailed error messages and diagnostics below.
If you respond, please do so to era@iki.fi -- this &%¤&!! masquerading
Sendmail might think I'm at something like era@schildt or whatever.
(Grr.)
How I noticed
=============
I was about to install alsalib0.3.2_0.3.2-2.deb but the installation
bailed out with a lot of error messages. Here's a rerun:
schildt (17:01:43) /usr/tmp# dpkg -i alsalib0.3.2_0.3.2-2.deb
(Reading database ... 21038 files and directories currently installed.)
Preparing to replace alsalib0.3.2 0.3.2-2 (using alsalib0.3.2_0.3.2-2.deb) ...
Unpacking replacement alsalib0.3.2 ...
Setting up alsalib0.3.2 (0.3.2-2) ...
ldconfig: warning: can't open /usr/lib/libBrokenLocale.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libcrypt.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libdb.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libdl.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libm.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libndbm.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libnsl.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libnss_compat.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libnss_db.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libnss_dns.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libnss_files.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libnss_nis.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libpthread.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libresolv.so (No such file or directory), skipping
ldconfig: warning: can't open /usr/lib/libutil.so (No such file or directory), skipping
schildt (17:02:24) /usr/tmp#
Actually, the installation seems to have thought it finished okay.
(I'm not yet at a stage where I can actually test whether it works.
I'm in the middle of installing the other stuff I need to use this.
It might not even be supported on my computer.)
What's Broken
=============
ls -lL has the nice feature that only broken symlinks will be listed
with '->' so the following shows all the broken symlinks in /usr/lib:
$ cd /usr/lib ; ls -lL | fgrep -e '->'
lrwxrwxrwx 1 root root 29 Jan 16 1999 libBrokenLocale.so -> /lib/libBrokenLocale-2.0.7.so
lrwxrwxrwx 1 root root 22 Jan 16 1999 libcrypt.so -> /lib/libcrypt-2.0.7.so
lrwxrwxrwx 1 root root 19 Jan 16 1999 libdb.so -> /lib/libdb-2.0.7.so
lrwxrwxrwx 1 root root 19 Jan 16 1999 libdl.so -> /lib/libdl-2.0.7.so
lrwxrwxrwx 1 root root 18 Jan 16 1999 libm.so -> /lib/libm-2.0.7.so
lrwxrwxrwx 1 root root 8 Jan 16 1999 libndbm.so -> libdb.so
lrwxrwxrwx 1 root root 20 Jan 16 1999 libnsl.so -> /lib/libnsl-2.0.7.so
lrwxrwxrwx 1 root root 27 Jan 16 1999 libnss_compat.so -> /lib/libnss_compat-2.0.7.so
lrwxrwxrwx 1 root root 23 Jan 16 1999 libnss_db.so -> /lib/libnss_db-2.0.7.so
lrwxrwxrwx 1 root root 24 Jan 16 1999 libnss_dns.so -> /lib/libnss_dns-2.0.7.so
lrwxrwxrwx 1 root root 26 Jan 16 1999 libnss_files.so -> /lib/libnss_files-2.0.7.so
lrwxrwxrwx 1 root root 24 Jan 16 1999 libnss_nis.so -> /lib/libnss_nis-2.0.7.so
lrwxrwxrwx 1 root root 22 Jan 16 1999 libpthread.so -> /lib/libpthread-0.7.so
lrwxrwxrwx 1 root root 23 Jan 16 1999 libresolv.so -> /lib/libresolv-2.0.7.so
lrwxrwxrwx 1 root root 21 Jan 16 1999 libutil.so -> /lib/libutil-2.0.7.so
The corresponding files all exist in different versions:
$ cd /usr/lib ; ls -lL |
> # Throw away anything not matching " -> /lib" (discard local broken links),
> # add a wildcard before .so to allow for version numbers, and get sh to
> # glob files matching the generated patterns in /lib
> sed -e '/ -> \/lib/!d' -e 's/ -> .*//' -e 's/.* //' \
> -e 's/\.so/*&/' -e 's%^%ls /lib/%' | sh
/lib/libBrokenLocale-2.1.1.so
/lib/libcrypt-2.1.1.so
/lib/libdb-2.1.1.so
/lib/libdb1-2.1.1.so
/lib/libdl-2.1.1.so
/lib/libm-2.1.1.so
/lib/libnsl-2.1.1.so
/lib/libnss_compat-2.1.1.so
/lib/libnss_db-2.1.1.so
/lib/libnss_dns-2.1.1.so
/lib/libnss_files-2.1.1.so
/lib/libnss_nis-2.1.1.so
/lib/libnss_nisplus-2.1.1.so
/lib/libpthread-0.8.so
/lib/libresolv-2.1.1.so
/lib/libutil-2.1.1.so
dpkg -S for the replacements seems to implicate a libc6 upgrade:
$ cd /usr/lib ; ls -lL | sed -e '/ -> \/lib/!d' -e 's/ -> .*//' -e 's/.* //' \
> -e 's/\.so/*&/' -e 's%^%ls /lib/%' | sh | xargs dpkg -S
libc6: /lib/libBrokenLocale-2.1.1.so
libc6: /lib/libcrypt-2.1.1.so
libc6: /lib/libdb-2.1.1.so
libc6: /lib/libdb1-2.1.1.so
libc6: /lib/libdl-2.1.1.so
libc6: /lib/libm-2.1.1.so
libc6: /lib/libnsl-2.1.1.so
libc6: /lib/libnss_compat-2.1.1.so
libc6: /lib/libnss_db-2.1.1.so
libc6: /lib/libnss_dns-2.1.1.so
libc6: /lib/libnss_files-2.1.1.so
libc6: /lib/libnss_nis-2.1.1.so
libc6: /lib/libnss_nisplus-2.1.1.so
libc6: /lib/libpthread-0.8.so
libc6: /lib/libresolv-2.1.1.so
libc6: /lib/libutil-2.1.1.so
libc6_2.1.1-12.deb appears to have been installed on July 2nd here.
(Rephrase without passive: +I+ seem to have installed it.) The older
package has been renamed to libc6_2.0.7.19981211-6.deb but has a time
stamp of March 30, which seems more likely. (I might have downloaded
it in December, and finally gotten around to finding I needed it in
March. I work on this system when I have the time, and basically just
need it to run Emacs and Perl. I guess I got X running around March.)
Here's dpkg -S for the broken links:
$ ls -lL /usr/lib | sed -e '/ -> \/lib/!d' -e 's/ -> .*//' -e 's/.* //' \
> -e 's%^%/usr/lib/%' | xargs dpkg -S
libc6-dev: /usr/lib/libBrokenLocale.so
libc6-dev: /usr/lib/libcrypt.so
libc6-dev: /usr/lib/libdb.so
libc6-dev: /usr/lib/libdl.so
libc6-dev: /usr/lib/libm.so
libc6-dev: /usr/lib/libnsl.so
libc6-dev: /usr/lib/libnss_compat.so
libc6-dev: /usr/lib/libnss_db.so
libc6-dev: /usr/lib/libnss_dns.so
libc6-dev: /usr/lib/libnss_files.so
libc6-dev: /usr/lib/libnss_nis.so
libc6-dev: /usr/lib/libpthread.so
libc6-dev: /usr/lib/libresolv.so
libc6-dev: /usr/lib/libutil.so
So it appears that these actual links were installed by libc6-dev and
never got updated when newer packages updated the corresponding
libraries in /lib.
I seem to have installed libc6-dev on June 15th.
$ dpkg -s libc6-dev
Package: libc6-dev
Status: install ok installed
Priority: standard
Section: devel
Installed-Size: 4841
Maintainer: Dale Scheetz <dwarf@polaris.net>
Source: glibc
Version: 2.0.7t-1
Replaces: ldso (<< 1.9.0-0), man-db (<= 2.3.10-41), gettext (<= 0.10.26-1), ppp (<= 2.2.0f-24), libgdbmg1-dev (<= 1.7.3-24)
Provides: libc-dev
Depends: libc6 (= 2.0.7t-1), gcc (>= 2.7.2.3-1)
Conflicts: libc-dev, libdl1-dev, libdb1-dev, libgdbm1-dev, libpthread0-dev
Description: The GNU C library version 2 (development files).
Includes libc headers, kernel headers and static libraries.
Unfortunately, I suspected libc6-dev at this point, and went ahead and
upgraded it. In the process, I also upgraded to ldso_1.9.11-3 -- from
1.9.9-1 -- and libc6_2.1.2-2 and that certainly fixed the problem. But
I didn't have the sense to check whether the upgrade of libc6 alone
would have fixed this. Grumble.
Now I'm installing a replacement for libdb2 just to see what happens
... hummm, yes: upgrading to libdb2_2.4.14-5.deb updates the link,
too.
Sorry if I'm wasting your time with this,
/* era */
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