Date: Wed, 21 Jan 2015 00:21:37 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 196951] Feature request: fix wait-built to allow waiting for ANY process, not just the current shell's child Message-ID: <bug-196951-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196951 Bug ID: 196951 Summary: Feature request: fix wait-built to allow waiting for ANY process, not just the current shell's child Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: mi@ALDAN.algebra.com Historical implementation of the wait-builtin of both sh and csh relied on wait(2) (and/or friends), which only affords wait-ing for the current shell's children. However, for some time BSD's kevent(2)'s EVFILT_PROC has allowed monitoring any visible process for the NOTE_EXIT -- a feature used by pwait(1) already. I'd like the wait-builtin of our current base shells to be rewritten to make use of the feature -- providing the same functionality the traditional implementation offered (exit status), but allowing to watch a wider variety of processes. One immediate application of this will allow service-scripts (such as those inside /etc/rc.d) to properly wait for the service stop before exiting or starting it again. I'd be happy to offer the necessary patches, but wish to secure the acquiescence in principle first. -- You are receiving this mail because: You are the assignee for the bug.
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