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[bug #49278] fprintf(stderr, ...) returns -1 (EINTR)
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From: |
Kalle Olavi Niemitalo |
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Subject: |
[bug #49278] fprintf(stderr, ...) returns -1 (EINTR) |
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Date: |
Thu, 6 Oct 2016 06:58:11 +0000 (UTC) |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0 |
Follow-up Comment #1, bug #49278 (project hurd):
I suspect this is caused by a no-more-senders notification on the receive
right of the filesystem root port, to which the client sent the message. If
you add sleep(2) after the mach_msg call in the client, so that it doesn't
deallocate the send right before mach_msg times out in the server, then the
EINTR doesn't happen on the first call. (I didn't test more calls.) The
no-more-senders notification would be requested because trivfs_S_fsys_getroot
calls ports_get_right. The notification is handled in
ports_do_mach_notify_no_senders.
If the EINTR only happens on the first call, that seems wrong.
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