[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[drepper.fsp at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=11149

Ulrich Drepper <drepper.fsp at gmail dot com> changed:

           What    |Removed                     |Added
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             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #14 from Ulrich Drepper <drepper.fsp at gmail dot com> 2011-05-30 01:47:23 UTC ---
This has long since been fixed.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=11149

Florian Weimer <fweimer at redhat dot com> changed:

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              Flags|                            |security-

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[anssi dot hannula at iki dot fi]

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[pasky at suse dot cz]

------- Additional Comments From pasky at suse dot cz  2010-06-01 00:29 -------
Unfortunately, the aux_cache change introduced a bug - normally, ldconfig -r
never cares if the auxiliary cache is not available and that is not a fatal
problem, however this is not the case in case of ldconfig -r when executed as
non-root. In that case, ldconfig -r fails hard unless var/cache/ldconfig/ exists
within the chroot.

Patch to follow.

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           What    |Removed                     |Added
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             Status|VERIFIED                    |REOPENED
         Resolution|FIXED                       |


http://sourceware.org/bugzilla/show_bug.cgi?id=11149

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[pasky at suse dot cz]

------- Additional Comments From pasky at suse dot cz  2010-06-01 00:29 -------
Created an attachment (id=4825)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=4825&action=view)
proposed patch


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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[vas dot gurevich at gmail dot com]

------- Additional Comments From vas dot gurevich at gmail dot com  2010-05-27 19:28 -------
Excuse me. It works fine. It was my mistake. Thanks a lot. Verified.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[vas dot gurevich at gmail dot com]

------- Additional Comments From vas dot gurevich at gmail dot com  2010-05-25 21:25 -------
I checked glibc-2.11.2. It is still aborted. Will continue soon. Many thanks.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[pasky at suse dot cz]

------- Additional Comments From pasky at suse dot cz  2010-05-25 19:28 -------
Version 2.12 should have the fix, as well as 2.11.2.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[vas dot gurevich at gmail dot com]

------- Additional Comments From vas dot gurevich at gmail dot com  2010-05-25 19:24 -------
Thanks a lot. Could you provide version number where can I verify it, please.
Thank you.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2010-05-03 21:05 -------
OK, I fixed it now.  The patch differes from yours.

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           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[vas dot gurevich at gmail dot com]

------- Additional Comments From vas dot gurevich at gmail dot com  2010-04-12 17:27 -------
I am sorry. I built glibc-2.11.1 on top of my ubuntu jaunty. There are minimum
settings:

# pwd
/home/user/testroot
# find
.
./lib
./lib/libBrokenLocale.so.1
./lib/libBrokenLocale-2.8.so
./etc
./etc/ld.so.conf
./var
./var/cache
./usr
./usr/lib
./usr/lib/libBrokenLocale.so
# pwd
/home/user/testroot/lib
# ls -l
-rw-r--r-- 1 user user 5484 2010-02-23 15:55 libBrokenLocale-2.8.so
lrwxrwxrwx 1 user user   22 2010-04-12 20:27 libBrokenLocale.so.1 ->
libBrokenLocale-2.8.so
# pwd
/home/user/testroot/usr/lib
# ls -l
lrwxrwxrwx 1 user user 25 2010-04-12 20:26 libBrokenLocale.so ->
/lib/libBrokenLocale.so.1

And when I launch ldconfig it is aborted:
# ./ldconfig -r /home/user/testroot/
Aborted

It shall be enough. It was three months ago, I am sorry again.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2010-04-10 13:43 -------
(In reply to comment #4)
> Please, ask me if it is not enough. Thank you.

It isn't enough.  First, files named somelib are ignored because they don't look
like libraries.  I asked for the exact situation, not some general idea.

Second, even if I'm using a real library with its real name and then a link I
see no accesses outside the chroot:

I copied libc.so in a chroot tree and added libc.so.6 as a symlink.  The only
accesses to libc.so of

ldconfig -r $PWD/testroot

are:

lstat("$PWD/testroot/lib64/libc.so", {st_mode=S_IFREG|0775, st_size=9166760,
...}) = 0
open("$PWD/testroot/lib64/libc.so", O_RDONLY) = 4
stat("$PWD/testroot/lib64/libc.so.6", {st_mode=S_IFREG|0775, st_size=9166760,
...}) = 0
lstat("$PWD/testroot/lib64/libc.so.6", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
readlink("$PWD/testroot/lib64/libc.so.6", "libc.so", 4096) = 7
lstat("$PWD/testroot/lib64/libc.so", {st_mode=S_IFREG|0775, st_size=9166760,
...}) = 0
lstat("$PWD/testroot/lib64/libc.so.6", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
lstat("$PWD/testroot/lib64/libc.so.6", {st_mode=S_IFLNK|0777, st_size=7, ...}) = 0
readlink("$PWD/testroot/lib64/libc.so.6", "libc.so", 4096) = 7
lstat("$PWD/testroot/lib64/libc.so", {st_mode=S_IFREG|0775, st_size=9166760,
...}) = 0
stat("$PWD/testroot/lib64/libc.so", {st_mode=S_IFREG|0775, st_size=9166760,
...}) = 0
lstat("$PWD/testroot/lib64/libc.so", {st_mode=S_IFREG|0775, st_size=9166760,
...}) = 0
write(3, "libc.so.6\0/lib64/libc.so.6\0", 27) = 27

I have of course replace the real path with $PWD in the output.  But as you can
see there is no access outside the chroot.


Either provide _exact_ instructions for how to show the problem or close the
bug.  And make sure you're using current sources.


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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[vas dot gurevich at gmail dot com]

------- Additional Comments From vas dot gurevich at gmail dot com  2010-04-09 17:25 -------
#pwd
/lib
#ls -la
somelib
somelib.ln -> somelib

#pwd
~/our_new_root/lib
#ls -la
somelib
somelib.ln -> somelib

ldconfig searchs it in aux cache (search_aux_cache), does not find, tries to add
(add_to_aux_cache) and aborts when tries to insert.

Please, ask me if it is not enough. Thank you.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2010-04-09 16:34 -------
(In reply to comment #2)
> I use maemo SDK+. It does not use chroot. I launch ldconfig -r /our_new_root. It
> finds link to /lib/ourlib inside /our_new_root and tries to stat /lib/ourlib.

Explain exactly where the link is located etc.  I need to be able to reproduce
this here.


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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[vas dot gurevich at gmail dot com]

------- Additional Comments From vas dot gurevich at gmail dot com  2010-04-09 15:59 -------
I use maemo SDK+. It does not use chroot. I launch ldconfig -r /our_new_root. It
finds link to /lib/ourlib inside /our_new_root and tries to stat /lib/ourlib.
But we specify -r /our_new_root. So it shall stat /our_new_root/lib/ourlib
according to -r options. My patch provides this functionality. Thank you.

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[Bug libc/11149] ldconfig - auxiliary cache does not work properly with -r option

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2010-04-05 18:27 -------
I agree with the aux cache file setting (although I used a simpler patch).

You will have to explain the second part.  Describe the setup you think creates
a problem.

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