We can't easily assert this without triggering warnings from tools like
valgrind by doing an invalid operation on a closed fd, so we only check
this when under `-m undefined`.
Originally contributed to GLib 2.76 in GNOME/glib@b3934133
"gstdio: Add g_clear_fd() and g_autofd". The implementation in GLib used
g_fsync() as a portable thing that we can do with a fd, but that
function is newer than our minimum GLib version, and libglnx isn't
portable to non-Unix anyway, so use fnctl() instead.
Signed-off-by: Simon McVittie <smcv@collabora.com>
This is an enabler for testing a backport of GTest helpers
(g_test_skip(), etc.) in the oldest environment that I have conveniently
available (Steam Runtime 1 'scout' with GLib 2.32).
Signed-off-by: Simon McVittie <smcv@collabora.com>
To fill in some gaps, I've had to make some assumptions:
* trivial changes (such as checking for an additional function or
header file in libglnx.m4) are assumed to not be copyrightable
* Will Thompson and Matthew Leeds are assumed to be contributing on
behalf of Endless Mobile Inc.
* files with no explicit licensing information are assumed to be
under the license found in COPYING
Reference: https://reuse.software/
Signed-off-by: Simon McVittie <smcv@debian.org>
This avoids colliding with a config.h generated by a parent Meson
project.
In the Meson build system, we generate libglnx-config.h by doing our
own checks, so we want to avoid it colliding.
In the Autotools build system, we assume that the parent project will
generate its own config.h that contains the results of LIBGLNX_CONFIGURE,
and create a forwarding header libglnx-config.h in the $(top_builddir)
(so that it is next to config.h).
Note that after updating libglnx in an Autotools non-recursive-Make
project (libostree, flatpak, flatpak-builder) it will be necessary to
re-run autogen.sh.
Signed-off-by: Simon McVittie <smcv@collabora.com>
This doesn't really matter, since it only happens when our process is
about to exit anyway, but it makes it easier to use AddressSanitizer
and similar tools.
Signed-off-by: Simon McVittie <smcv@collabora.com>
