Date: Fri, 3 May 2013 17:17:13 -0400 From: John Baldwin <jhb@freebsd.org> To: src-committers@freebsd.org Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org Subject: Re: svn commit: r250223 - in head: lib/libprocstat sys/kern sys/sys usr.bin/fstat Message-ID: <201305031717.13612.jhb@freebsd.org> In-Reply-To: <201305032111.r43LBvZ3040508@svn.freebsd.org> References: <201305032111.r43LBvZ3040508@svn.freebsd.org>
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On Friday, May 03, 2013 5:11:57 pm John Baldwin wrote: > Author: jhb > Date: Fri May 3 21:11:57 2013 > New Revision: 250223 > URL: http://svnweb.freebsd.org/changeset/base/250223 > > Log: > Similar to 233760 and 236717, export some more useful info about the > kernel-based POSIX semaphore descriptors to userland via procstat(1) and > fstat(1): > - Change sem file descriptors to track the pathname they are associated > with and add a ksem_info() method to copy the path out to a > caller-supplied buffer. > - Use the fo_stat() method of shared memory objects and ksem_info() to > export the path, mode, and value of a semaphore via struct kinfo_file. > - Add a struct semstat to the libprocstat(3) interface along with a > procstat_get_sem_info() to export the mode and value of a semaphore. > - Teach fstat about semaphores and to display their path, mode, and value. > > MFC after: 2 weeks I do realize that the POSIX semaphore API only uses these descriptors for 8.x and earlier, but this is still useful info if you are using 8.x (where I will MFC this), or if you are using an 8.x world or chroot with a newer kernel. -- John Baldwin
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