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| /freebsd-11-stable/sbin/devd/ | ||
| H A D | devd.8 | diff 246121 Wed Jan 30 13:23:14 MST 2013 ian Fix a descriptor leak in devd. Clients reading /var/run/devd.pipe can close their socket connection any time, and devd only notices that when it gets an error trying to write an event to the client. On a system with no device change activity, clients could connect and disappear repeatedly without devd noticing, leading to an ever-growing list of open socket descriptors in devd. Now devd uses poll(2) looking for POLLHUP on all existing clients every time a new client connection is established, and also periodically (once a minute) to proactively find zombie clients and reap the socket descriptors. It also now has a connection limit, configurable with a new -l <num> command line arg. When the maximum number of connections is reached it stops accepting new connections until some current clients drop off. Reviewed by: imp Approved by: cognet (mentor) |
| H A D | devd.cc | diff 246121 Wed Jan 30 13:23:14 MST 2013 ian Fix a descriptor leak in devd. Clients reading /var/run/devd.pipe can close their socket connection any time, and devd only notices that when it gets an error trying to write an event to the client. On a system with no device change activity, clients could connect and disappear repeatedly without devd noticing, leading to an ever-growing list of open socket descriptors in devd. Now devd uses poll(2) looking for POLLHUP on all existing clients every time a new client connection is established, and also periodically (once a minute) to proactively find zombie clients and reap the socket descriptors. It also now has a connection limit, configurable with a new -l <num> command line arg. When the maximum number of connections is reached it stops accepting new connections until some current clients drop off. Reviewed by: imp Approved by: cognet (mentor) |
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