[PATCH v2 01/15] linux: Add pidfd_open

[Matheus Castanho]

Hi Adhemerval,

Adhemerval Zanella via Libc-alpha <libc-alpha@sourceware.org> writes:

> This was added on Linux 5.3 (32fcb426ec001cb6d5a4a195091a8486ea77e2df)
> as a way to retrieve a pid file descriptors for process that has not
> been created CLONE_PIDFD (by usual fork/clone).
> ---
[...]
>  create mode 100644 sysdeps/unix/sysv/linux/tst-pidfd-consts.py

This new test fails on systems with older kernels (e.g. Debian 10 -
kernel 4.19). Looks like linux/pidfd.h is not available on such systems,
so list_macros fails when trying to compile source_2.

FAIL: misc/tst-pidfd-consts
original exit status 1
/tmp/tmp5g72cxka/test.c:2:10: fatal error: linux/pidfd.h: No such file or directory
 #include <linux/pidfd.h>
          ^~~~~~~~~~~~~~~
compilation terminated.

--
Matheus Castanho