Re: [PATCH v2] Use LFS and 64 bit time for installed programs (BZ #15333)

[Adhemerval Zanella <adhemerval.zanella@linaro.org>]

On 29/12/2021 09:35, Florian Weimer wrote:
> * Adhemerval Zanella:
> 
>> On 28/12/2021 17:37, Florian Weimer wrote:
>>> * Adhemerval Zanella via Libc-alpha:
>>>
>>>> The installed programs are built with a combination of different
>>>> values for MODULE_NAME, as below.  To enable both Long File Support
>>>> and 64 bt time, -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64 is added for
>>>> nonlibi, nscd, lddlibc4, libresolv, ldconfig, locale_programs,
>>>> iconvprogs, libnss_files, libnss_compat, libnss_db, libnss_hesiod,
>>>> libutil, libpcprofile, and libSegFault.
>>>
>>> -D_TIME_BITS=64 does not work for building glibc because the internal
>>> aliases such as __fstat64 do not follow _TIME_BITS and are hard-wired to
>>> 32-bit time.  A symptom is a broken ldconfig, e.g.:
>>>
>>> $ elf/ldconfig -p
>>> elf/ldconfig: mmap of cache file failed.
>>> : Invalid argument
>>
>> I think the real problem is the usage of internal symbol in installed
>> binaries, it works for LFS stat because they are either redirected to
>> compat xstat ones or __stat (which I think it is also error prone).
>>
>> I am fixing it by using the default stat names, installed programs 
>> should not use proper LFS and time64.
> 
> They need to be able to deal with 64-bit inode numbers, though.

Oops, I meant that installed programs *should* use proper LFS and time64
(using default stat names accomplish it for static linking).