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| author | David Herrmann <dh.herrmann@gmail.com> | 2013-11-27 10:36:35 +0100 |
|---|---|---|
| committer | David Herrmann <dh.herrmann@gmail.com> | 2013-11-28 15:16:49 +0100 |
| commit | 2a16a986ce5f1bdb7e96abfe14fcb9f34c9364b6 (patch) | |
| tree | 0bf819aa4399d09659ac971bde7312b3f6b0d198 /src/libsystemd-bus/test-bus-kernel.c | |
| parent | 90a18413f8be577a649900eca977e060273f2b5b (diff) | |
event: allow EPOLLET as event flag
EPOLLET enables edge-triggered mode (see epoll(7) for more). For most
use-cases, level-triggered is just fine, but for master-TTYs we need
edge-triggered to catch EPOLLHUP. master-TTYs signal EPOLLHUP if no client
is connected, but a client may connect some time later (same happens
during vhangup(2)).
However, epoll doesn't allow masking EPOLLHUP so it's signaled constantly.
To avoid this, edge-triggered mode is needed.
Diffstat (limited to 'src/libsystemd-bus/test-bus-kernel.c')
0 files changed, 0 insertions, 0 deletions