[Bug find-debuginfo/32863] New: find-debuginfo.sh should use a reliable, dedicated ELF file id tool, not rely on parsing 'file' output

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=32863

            Bug ID: 32863
           Summary: find-debuginfo.sh should use a reliable, dedicated ELF
                    file id tool, not rely on parsing 'file' output
           Product: debugedit
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: find-debuginfo
          Assignee: unassigned at sourceware dot org
          Reporter: mark at klomp dot org
                CC: debugedit at sourceware dot org
  Target Milestone: ---

This comes from https://bugzilla.redhat.com/show_bug.cgi?id=1609013
elfutils now comes with eu-elfclassify which should do what is expected.

$ eu-elfclassify --help
Usage: eu-elfclassify [OPTION...] FILE...
Determine the type of an ELF file.

All of the classification options must apply at the same time to a particular
file.  Classification options can be negated using a "--not-" prefix.

Since modern ELF does not clearly distinguish between programs and dynamic
shared objects, you should normally use either --executable or --shared to
identify the primary purpose of a file.  Only one of the --shared and
--executable checks can pass for a file.

If you want to know whether an ELF object might a program or a shared library
(but could be both), then use --program or --library. Some ELF files will
classify as both a program and a library.

If you just want to know whether an ELF file is loadable (as program or
library) use --loadable.  Note that files that only contain (separate) debug
information (--debug-only) are never --loadable (even though they might contain
program headers).  Linux kernel modules are also not --loadable (in the normal
sense).

Without any of the --print options, the program exits with status 0 if the
requested checks pass for all input files, with 1 if a check fails for any
file, and 2 if there is an environmental issue (such as a file read error or a
memory allocation error).

When printing file names, the program exits with status 0 even if no file names
are printed, and exits with status 2 if there is an environmental issue.

On usage error (e.g. a bad option was given), the program exits with a status
code larger than 2.

The --quiet or -q option suppresses some error warning output, but doesn't
change the exit status.

 Classification options
      --core                 File is an ELF core dump file
      --debug-only           File is a debug only ELF file (separate .debug,
                             .dwo or dwz multi-file)
      --elf                  File looks like an ELF object or archive/static
                             library (default)
      --elf-archive          File is an ELF archive or static library
      --elf-file             File is an regular ELF object (not an
                             archive/static library)
      --executable           File is (primarily) an ELF program executable (not
                             primarily a DSO)
      --library              File is an ELF shared object (DSO) (might also be
                             an executable)
      --linux-kernel-module  File is a linux kernel module
      --loadable             File is a loadable ELF object (program or shared
                             object)
      --program              File is an ELF program executable (might also be a
                             DSO)
      --shared               File is (primarily) an ELF shared object (DSO)
                             (not primarily an executable)
      --unstripped           File is an ELF file with symbol table or .debug_*
                             sections and can be stripped further

 Input flags
  -f, --file                 Only classify regular (not symlink nor special
                             device) files
      --no-stdin             Do not read files from standard input (default)
      --stdin                Also read file names to process from standard
                             input, separated by newlines
      --stdin0               Also read file names to process from standard
                             input, separated by ASCII NUL bytes
  -z, --compressed           Try to open compressed files or embedded (kernel)
                             ELF images

 Output flags
      --matching             If printing file names, print matching files
                             (default)
      --no-print             Do not output file names
      --not-matching         If printing file names, print files that do not
                             match
      --print                Output names of files, separated by newline
      --print0               Output names of files, separated by ASCII NUL

 Additional flags
  -q, --quiet                Suppress some error output (counterpart to
                             --verbose)
  -v, --verbose              Output additional information (can be specified
                             multiple times)

  -?, --help                 Give this help list
      --usage                Give a short usage message
  -V, --version              Print program version

Report bugs to https://sourceware.org/bugzilla.

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