The two arrays might not reference contiguous memory, and assuming they
are does break at least now on GNU/Hurd, which contains an unmapped
memory block between the memory used by the two arrays.
Just check that each element is strictly after the previous one, so that
we know there are no unmapped memory blocks inbetween.
At least on IA64 and PowerPC 64-bit ELFv1, the functions are stored in
the .text sections but they are accessed through a function descriptor
stored in a data section, for example for PowerPC 64-bit ELFv1 that
section is called .opd.
We should take this into account when checking the n_type for the
functions we have requested information from nlist().
Rationale-by: James Clarke <jrtc27@jrtc27.com>
We have moved all man pages to section 3bsd, let's do the same for the
page title, and in all the references for uniformity and to avoid
confusions.
Fixes: https://bugs.freedesktop.org/101545
Add a check for _MIPS_SIM inside the __mips__ #elif to detect mips64el
and use ELFCLASS64 in that case. Note that we can't use defined(__mips64)
here because that is also defined when the n32 ABI is in use, which uses
ELFCLASS32.
Fixes: https://bugs.debian.org/865091
Signed-off-by: Guillem Jover <guillem@hadrons.org>
* ppc64el defines both __powerpc__ and __powerpc64__ but since the
__powerpc64__ #elif is below the __powerpc__ one, it will never be hit.
* Both assumed that powerpc* was big-endian.
Fixes: https://bugs.debian.org/865091
Signed-off-by: Guillem Jover <guillem@hadrons.org>
The offset is not page aligned, which makes mmap() return EINVAL on
Linux. Switch to use pread() which handles unaligned offset and non-page
sized reads, and because we are already loading parts of the executable
by read() calls, so there's not much point in using mmap() anyway.
Some libc libraries do not have an <a.out.h> header. And a.out as an
executable format is very much obsolete on pretty much all currently
supported systems, even if they might still support loading such
objects.
Remove the a.out support to increase portability.
Backport new changes from OpenBSD.
[guillem@hadrons.org:
- Update copyright years in COPYING. ]
References: https://svnweb.freebsd.org/base?view=revision&revision=281135
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
Some systems do not have these types available, and they are simply
convenience aliases. Instead use the expanded versions which are more
portable.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=101192
Because we were assigning to another unused variable, when building the
check with optimizations enabled, which is the default when using gcc
as the compiler, the variable was being discarded. Instead pass it to
printf() so that it cannot do so.
These are required due to the O_* macro usage, but have passed
undetected on glibc-based systems due to implicit inclusions.
Signed-off-by: Guillem Jover <guillem@hadrons.org>
In older glibc versions (< 2.17) clock_gettime() is in librt. Add a
check for this to avoid build breakage for programs/libraries that
use libbsd on such systems.
Based-on-patch-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Guillem Jover <guillem@hadrons.org>
