Shared library permissions in Debian-land and Red Hat-land

[Przemek Klosowski]

On 03/24/2011 03:28 AM, Ville Skyttä wrote:
> On 03/24/2011 06:52 AM, John Reiser wrote:
>>>   they say on Debian and Ubuntu,
>>> all shared libs have 0644 permissions.
>>
>> What they say is incorrect.
>>
>> I have Ubuntu 10.10 i686:
>> -rwxr-xr-x 1 root root 1421892 2011-01-21 15:08 /lib/libc-2.12.1.so
> [...snip more libc examples...]
>
> libc is probably a special case because it actually does useful things
> when executed.  The vast majority of shared libs are not executable on a
> Debian 6.0 box I just had a look at.

FWIW, on my F14 all the .so libs in /lib are executable, and all but 
three segfault (and trigger abrt) when executed. Besides the already 
mentioned libc-2.13.so and ld-2.13.so, only libpthread-2.13.so
runs successfully to print a legal notice followed by 'Forced unwind 
support included."