On 2017-10-04, Nan Xiao <xiaonan830...@gmail.com> wrote:
> Hi all,
>
> I find the type of executable file format on OpenBSD is "DYN", not
> "EXEC":
>
> # readelf -h /usr/bin/ldd
> ELF Header:
>   Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
>   Class:                             ELF64
>   Data:                              2's complement, little endian
>   Version:                           1 (current)
>   OS/ABI:                            UNIX - System V
>   ABI Version:                       0
>   Type:                              DYN (Shared object file)
>   ......
>
> Is there any special consideration for it? Thanks very much in advance!

It's because the file was built as a position-independent executable (PIE).
This is the default on OpenBSD, only a few programs are built without PIE. 

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