glibc/glibc-rhbz1869030-faccessat2-eperm.patch

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With older systemd-nspawn the faccessat2 syscall was denied but
instead of returning ENOSYS it returned EPERM. This has since
been corrected in upstream systemd-nsapwn, but with older builders
that may have older nspawn the Fedora Rawhide glibc should fall
back to faccessat when it sees ENOSYS *or* EPERM. This is a
Fedora Rawhide-only patch that should be removed before the next
release.
diff --git a/sysdeps/unix/sysv/linux/faccessat.c b/sysdeps/unix/sysv/linux/faccessat.c
index 56cb6dcc8b4d58d3..5de75032bbc93a2c 100644
--- a/sysdeps/unix/sysv/linux/faccessat.c
+++ b/sysdeps/unix/sysv/linux/faccessat.c
@@ -34,7 +34,11 @@ faccessat (int fd, const char *file, int mode, int flag)
#if __ASSUME_FACCESSAT2
return ret;
#else
- if (ret == 0 || errno != ENOSYS)
+ /* Fedora-specific workaround:
+ As a workround for a broken systemd-nspawn that returns
+ EPERM when a syscall is not allowed instead of ENOSYS
+ we must check for EPERM here and fall back to faccessat. */
+ if (ret == 0 || !(errno == ENOSYS || errno == EPERM))
return ret;
if (flag & ~(AT_SYMLINK_NOFOLLOW | AT_EACCESS))