>>> So for mime types to distinguish, "file" needs to grow reporting of
the INTERP presence.
Distinguish between shared libraries and PIC executables based on INTERP
ELF header is not always correct. Consider following 2 exceptions:
GLIBC main library libc-2.24.so
This shared object has an
>>> Yes, this is very much a bug. While ELF position independent
executables are ELF shared objects, they weren't being recognized as
executables by desktop launchers. So they wouldn't run.
So those launchers should accept shared objects
(application/x-sharedlib) as executables from now.
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Electron applications using Electron 4.0.0 beta/nightly are effected by
this bug making it impossible for developers to create Linux
applications and have it easily work using that version, doesn't effect
applications developed Electron 3.0.6 latest but this is a seriously
annoying bugs that will
What does "file --mime-type" return for dynamic libraries?
Yes, this is very much a bug. While ELF position independent executables
are ELF shared objects, they weren't being recognized as executables by
desktop launchers. So they wouldn't run.
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And I don't think this is a bug because technically an ELF position
independent executable IS a ELF shared object, right?
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https://bugs.launchpad.net/bugs/1747711
Title:
file
Looks like the upstream fix makes many dynamic libraries wrongly detected as
'pie executable's.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906727
** Bug watch added: Debian Bug tracker #906727
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906727
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Has this been fixed upstream? Looking at the changelog, there has been a
related change, but I'm not sure if it resolves the issue yet, it now
says they're both executables.
https://github.com/file/file/blob/219846094c7593e27453e62855e61181089c48cf/ChangeLog
file 5.3.3:
python3.6: ELF 64-bit
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: file (Ubuntu)
Status: New => Confirmed
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Title:
file
** Tags removed: rls-bb-incoming
** Tags added: rls-bb-notfixing
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Title:
file mis-identifies modern executables as application/x-sharedlib
To
** Tags added: rls-bb-incoming
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https://bugs.launchpad.net/bugs/1747711
Title:
file mis-identifies modern executables as application/x-sharedlib
To manage notifications about this bug
I've had a discussion with Christos Zoulas, the root maintainer of
‘file’, and they will make the necessary changes in due course. Whether
this will be noticed by all the forks and re-implementations such as
xdgmime in Gnome, I don't know.
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This is (sort of) a bug in file. The problem is not being able to
distinguish between shared objects and PIE binaries. (The latter have
INTERP ELF sections and can be run directly.)
$ readelf -l /bin/true
...
Elf file type is EXEC (Executable file)
...
INTERP 0x0238
It is also an issue on bionic:
$ schroot -u root -c bionic-amd64
(bionic-amd64)root@impulse:/tmp# echo "int main() { return 0; }" > foo.c
(bionic-amd64)root@impulse:/tmp# gcc -o foo foo.c
(bionic-amd64)root@impulse:/tmp# file foo
foo: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV),
** Tags added: bionic
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Title:
file mis-identifies modern executables as application/x-sharedlib
To manage notifications about this bug go to:
** Information type changed from Private Security to Public Security
** Description changed:
file doesn't recognize modern PIE (Position Independent Executable) x86
executables as such, reporting them as “application/x-sharedlib”.
Consequently, only non-PIE executables can be opened in
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