Alexander V. Chernikov 5bdce6ff54 Remove deadlock in rc caused by pwait waiting for itself. ... The following situation can trigger the deadlock: 1) Long time ago a_service was started through rc.d 2) We want to restart a_service and issue service a_service restart 3) rc.subr reads current process PID (via file or process), sends TERM signal and runs pwait with PID harvested 4) a_service process dies very quickly so it's PID becomes available. It is possible that while original process was running, PID counter overflowed and pwait got assigned a_service's PID. This patch ignores pid(s) to wait that are equal to pwait PID. Reported by: Dan McGregor, Boris Lytochkin Submitted by: Boris Lytochkin <lytboris at gmail.com> Reviewed By: 0mp MFC after: 2 weeks PR: 218598 Differential Revision: https://reviews.freebsd.org/D28240		2021-01-21 21:36:37 +00:00
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tests	Implement tests for the newly added -o flag.	2020-01-26 11:03:45 +00:00
Makefile	Add HAS_TESTS to all Makefiles that use the SUBDIR.${MK_TESTS}+= tests idiom	2017-08-02 08:14:06 +00:00
Makefile.depend	DIRDEPS_BUILD: Update dependencies.	2017-10-31 00:07:04 +00:00
pwait.1	Remove deadlock in rc caused by pwait waiting for itself.	2021-01-21 21:36:37 +00:00
pwait.c	Remove deadlock in rc caused by pwait waiting for itself.	2021-01-21 21:36:37 +00:00