On 10.09.2019 18:24, Joerg Sonnenberger wrote: > On Tue, Sep 10, 2019 at 05:42:41PM +0200, Kamil Rytarowski wrote: >> dl_iterate_phdr(3) as of now skips the ELF loader. > > I find that to be sensible behavior, so why not start by descriping why > it is a problem? > > Joerg > dl_iterate_pthr(3) is/was Linux-specific function and we break compat with it (but I skip .Sh HISTORY entry whether Linux was really the first user). All tested ELF OSs except NetBSD return the ELF loader as DSO. This behavior is already present in linkmap: _rtld_linkmap_add(_rtld_objmain); _rtld_objself.path = xstrdup(_rtld_objself.path); _rtld_linkmap_add(&_rtld_objself); I need the ELF loader mapping returned by this function. ELF loader is mentioned in many/all similar functions, such as kinfo_vmmap(3), but without the useful details located in dl_phdr_info. I find the proposed behavior to be more natural and sensible. If we want to break the compat for some reason with Linux/FreeBSD/OpenBSD what is the alternative approach to get filled dl_phdr_info entry for the ELF loader?
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