[systemd-devel] pcre in daemons

[Kay Sievers]

On Wed, Feb 26, 2014 at 10:22 PM, Daniel J Walsh <dwalsh at redhat.com> wrote:
> On 02/26/2014 03:05 PM, Zbigniew Jędrzejewski-Szmek wrote:
>> On Wed, Feb 26, 2014 at 08:54:34PM +0100, Thomas H.P. Andersen wrote:
>>> The todo says: "something pulls in pcre as shared object dependency into
>>> our daemons such as hostnamed"
>>>
>>> Normal buiild: ldd ./systemd-hostnamed linux-vdso.so.1 =>
>>> (0x00007fff247bc000) libselinux.so.1 => /lib64/libselinux.so.1
>>> (0x00007f7ec47f7000) librt.so.1 => /lib64/librt.so.1
>>> (0x00007f7ec45ef000) libdl.so.2 => /lib64/libdl.so.2
>>> (0x00007f7ec43ea000) libpthread.so.0 => /lib64/libpthread.so.0
>>> (0x00007f7ec41cd000) libc.so.6 => /lib64/libc.so.6 (0x00007f7ec3e0e000)
>>> /lib64/ld-linux-x86-64.so.2 (0x00007f7ec4a2f000) libpcre.so.1 =>
>>> /lib64/libpcre.so.1 (0x00007f7ec3ba7000) liblzma.so.5 =>
>>> /lib64/liblzma.so.5 (0x00007f7ec3982000)
>> It's a selinux problem (or not, if it actually uses pcre's). ldd
>> /lib64/libselinux.so.1 linux-vdso.so.1 =>  (0x00007fff58bfe000)
>> libpcre.so.1 => /lib64/libpcre.so.1 (0x0000003803400000) liblzma.so.5 =>
>> /lib64/liblzma.so.5 (0x00000035d6800000) libdl.so.2 => /lib64/libdl.so.2
>> (0x00000035d2c00000) libc.so.6 => /lib64/libc.so.6 (0x00000035d2000000)
>> /lib64/ld-linux-x86-64.so.2 (0x00000035d1800000) libpthread.so.0 =>
>> /lib64/libpthread.so.0 (0x00000035d2800000)

> libselinux and systemd take advantage of pcre for speeding up the handling of
> reading in the  labeling file.

Well, it's the crazy _init constructor that libselinux needs that
pulls that in as a first-level dependency. People should just not use
that insane stuff.

Kay