Ansgar Burchardt wrote:
Finally, I dared to strace atd and its subprocesses, and found the
difference between sendmail run for root and non-root user.
Being run from atd, sendmail process does not have open stdout and
stderr file descriptors. And courier's sendmail, being run for ordinary
user, checks that (fcntl(..., F_GETFD)) and reopens them to /dev/null.
For root user, it does not check/reopen them, so FDs 1 and 2 get
reused for other file descriptors (probably, in dlopen, as a socket
to connect to nscd service, and so on), and certain hell ensues as a
result.
Can you try the patch below? A dsc and deb (for amd64) is available
from http://www.43-1.org/~ansgar/at/ as well.
Great, now it works as I long wanted.
I applied your patch only to atd.c in Ubuntu 9.10 'at' package, rebuilt
and reinstalled it, and now my root jobs output gets mailed to me.
Thank you.
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