tag 1041415 - upstream
thanks
Ultimately this fails because /proc is not available in the chroot.
The version of libc in use *emulates* fchmodat() using /proc/self/fd
rather than using the fchmodat system call.
When /proc is provided in the chroot, the fchmodat emulation works
successfully and emacs is happy.
zarquon% sudo chroot /var/lib/machines/debian-sid
root@zarquon:/# mount
mount: failed to read mtab: No such file or directory
root@zarquon:/# /usr/bin/emacs --no-init-file --no-site-file -batch -f
batch-byte-compile /usr/share/emacs/site-lisp/debian-startup.el
>>Error occurred processing /usr/share/emacs/site-lisp/debian-startup.el: File
>>error (("Doing chmod" "Operation not supported"
>>"/usr/share/emacs/site-lisp/debian-startup.elcGBDJRw"))
root@zarquon:/# mount -t proc /proc /proc
root@zarquon:/# mount
/proc on /proc type proc (rw,relatime)
root@zarquon:/# /usr/bin/emacs --no-init-file --no-site-file -batch -f
batch-byte-compile /usr/share/emacs/site-lisp/debian-startup.el
root@zarquon:/# exit
zarquon%
So, not an upstream bug, and not really a bug at all.
--
We're deep in discussion, the party's on mute.
