Recovering glibc-2.4 from RPM [solved]

[epretorious]

HELP! :huh:

 

I accidentally deleted three of glibc's libraries (libdl.so.2, libc.so.6, & librt.so.1) and now I'm not able to recover them using RPM:

 

[root@eto-dhcp34 ~]# rpm --Uvh /var/lib/misc/Mandrivalinux/media/main/glibc-2.4-4mdk.i586.rpm
--Uvh: unknown option
[root@eto-dhcp34 ~]# urpmi /var/lib/misc/Mandrivalinux/media/main/glibc-2.4-4mdk.i586.rpm
/usr/bin/perl: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory

[epretorious]

OMG - I had no idea how important these files are: When I rebooted the system, init complained...

 

/bin/bash: error while loading shared libraries: libdl.so.2: cannot open shared object file: no such file or directory.

...and the boot process completely stopped!

 

What do I do now?! :huh:

[pmpatrick]

All three of those files are just dynamic links to the actual library files on my system:

 

libdl.so.2 --> libdl-2.4.so

libc.so.6 --> libc-2.4.so

librt.so.1 --> librt-2.4.so

 

If you have the files on the right of the arrow in your /lib, you should be able to recreate the links by running the following as root:

 

# cd /lib

# ln -s libdl-2.4.so libdl.so.2

# ln -s libc-2.4.so libc.so.6

# ln -s librt-2.4.so librt.so.1

 

or in general:

 

# ln -s <target> <link>

 

Edit: If you have a good livecd you can check your /lib for the above files and recreate the links per the above.

Edited April 27, 2007 by pmpatrick

[epretorious]

From a running Mandriva 2007.0 system:

 

[admin@vdc-vm2 lib]$ cd /lib
[admin@vdc-vm2 lib]$ ls -al libdl* librt*
-rwxr-xr-x 1 root root  9700 Jul 24  2006 libdl-2.4.so*
lrwxrwxrwx 1 root root	12 Dec  7 04:39 libdl.so.2 -> libdl-2.4.so*
-rwxr-xr-x 1 root root 26488 Jul 24  2006 librt-2.4.so*
lrwxrwxrwx 1 root root	12 Dec  7 04:39 librt.so.1 -> librt-2.4.so*

[admin@vdc-vm2 lib]$ cd /usr/lib
[admin@vdc-vm2 lib]$ ls -al libdl* librt* libc.*
-rw-r--r-- 1 root root 238 Jul 24  2006 libc.so
lrwxrwxrwx 1 root root  20 Dec  7 04:42 libdl.so -> ../../lib/libdl.so.2*
lrwxrwxrwx 1 root root  20 Dec  7 04:42 librt.so -> ../../lib/librt.so.1*

On my system (mounted at /mnt):

 

epretorious@epretorious-t43:/mnt/usr/lib$ cd /mnt/lib
epretorious@epretorious-t43:/mnt/lib$ ls -al libc.* librt.* libdl.*
ls: libc.*: No such file or directory
ls: librt.*: No such file or directory
ls: libdl.*: No such file or directory

epretorious@epretorious-t43:/mnt/lib$ cd /mnt/usr/lib/
epretorious@epretorious-t43:/mnt/usr/lib$ ls -al libc.* librt.* libdl.*
-rw-r--r-- 1 root root 238 2007-01-18 10:53 libc.so
lrwxrwxrwx 1 root root  11 2007-02-25 11:47 libc.so.6 -> libc-2.4.so
lrwxrwxrwx 1 root root  20 2007-02-25 11:49 libdl.so -> ../../lib/libdl.so.2
lrwxrwxrwx 1 root root  12 2007-02-25 11:47 libdl.so.2 -> libdl-2.4.so
lrwxrwxrwx 1 root root  20 2007-02-25 11:49 librt.so -> ../../lib/librt.so.1
lrwxrwxrwx 1 root root  12 2007-02-25 11:47 librt.so.1 -> librt-2.4.so

Assuming that I can just copy the libraries across, I've got some reconstructive surgery to do.

[pmpatrick]

If you have your install cds/dvd you can try doing an upgrade install over your present mdv installation. It might recreate your /lib for you without too much thinking.

[epretorious]

If you have your install cds/dvd you can try doing an upgrade install over your present mdv installation. It might recreate your /lib for you without too much thinking.

I'm not sure that installing over the current installation is such a good idea: The current installation has been updated over time and the freshly-installed packages might conflict with the currently-installed (i.e., updated) packages.

 

Success! :D

 

I booted the system using an old hard drive and I copied the libraries from a running Mandriva 2007.0 system onto the root partition (mounted at /mnt) and recreated the links:

 

epretorious@epretorious-t43:/mnt/lib$ sudo ln -s librt-2.4.so librt.so.1
epretorious@epretorious-t43:/mnt/lib$ sudo ln -s libdl-2.4.so libdl.so.2

epretorious@epretorious-t43:/mnt/lib$ ls -al lib{dl,rt}*
-rwxr-xr-x 1 root root  9700 2007-04-26 21:30 libdl-2.4.so
lrwxrwxrwx 1 root root	12 2007-04-26 21:32 libdl.so.2 -> libdl-2.4.so
-rwxr-xr-x 1 root root 26488 2007-04-26 21:30 librt-2.4.so
lrwxrwxrwx 1 root root	12 2007-04-26 21:31 librt.so.1 -> librt-2.4.so

epretorious@epretorious-t43:/mnt/lib$ ls -al ../usr/lib/lib{dl,rt,c}.so
-rw-r--r-- 1 root root 238 2007-01-18 10:53 ../usr/lib/libc.so
lrwxrwxrwx 1 root root  20 2007-02-25 11:49 ../usr/lib/libdl.so -> ../../lib/libdl.so.2
lrwxrwxrwx 1 root root  20 2007-02-25 11:49 ../usr/lib/librt.so -> ../../lib/librt.so.1

Thanks!

Edited April 27, 2007 by epretorious