Date: Mon, 12 Nov 2007 22:32:06 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Yuri <yuri@rawbw.com> Cc: freebsd-hackers@FreeBSD.org Subject: Re: How to get filename of an open file descriptor Message-ID: <20071112222557.N81124@fledge.watson.org> In-Reply-To: <1194905125.4738ce25a968c@webmail.rawbw.com> References: <1194896018.4738aa922f776@webmail.rawbw.com> <20071112214243.Y81124@fledge.watson.org> <1194905125.4738ce25a968c@webmail.rawbw.com>
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On Mon, 12 Nov 2007, Yuri wrote: > Thank you for your response. > > I attempted to compile procstat but procstat.h seems to be missing in tgz. Yuri, Indeed -- looks like I forgot to p4 add on my development box. I've updated the tarball to now include procstat.h. If there are any other problems, do let me know. Robert N M Watson Computer Laboratory University of Cambridge > > Yuri > > Quoting Robert Watson <rwatson@FreeBSD.org>: > >> On Mon, 12 Nov 2007, Yuri wrote: >> >>> I am looking for functionality similar to Linux's /proc/<PID>/fd/<FD>. I >>> need to know what is the file name of an open file descriptor. >>> >>> /proc/<PID>/fd is missing on FreeBSD. >>> >>> There's something called 'fdescfs'. In /dev/fd/ it shows the list of file >> >>> descriptors. But they don't seem to be symbolic links to open files. And >>> also it only shows FDs of the current process. >>> >>> So why there's no /proc/<PID>/fd in FreeBSD? And how do I work around this? >> >>> Or should I just invest time and write a kernel patch implementing >>> /proc/<PID>/fd/? >> >> You can give these patches a try: >> >> http://www.watson.org/~robert/freebsd/20071112-procstat.tgz >> >> They reflect a work-in-progress procstat(1) tool, which inspects process >> state >> in various ways. They are developed against 8-CURRENT, but likely still >> apply >> fairly easily to 7-STABLE. They suffer various deficiencies, such as relying >> >> on the name cache in-kernel to generate file paths for mapped files and open >> >> file descriptors, so don't currently work with devfs nodes (for example). >> However, they may do what you need. Any feedback would be most welcome. >> >> Robert N M Watson >> Computer Laboratory >> University of Cambridge >> > > > -- > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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