Date: Thu, 26 May 2011 15:28:02 +0400 From: Pan Tsu <inyaoo@gmail.com> To: freebsd-questions@freebsd.org Cc: Stanislav Sedov <stas@FreeBSD.org> Subject: fuser(1): do FIFOs and sockets count as "named" files? Message-ID: <868vttd7lp.fsf@gmail.com>
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fuser(1) man page mentions the tool is supposed to list processes that
have specified named file(s) open. As there are several types of files
(according to stat(2)) it's not clear which are supported, e.g.
$ (mkfifo foo.fifo; cat <>foo.fifo) & nc -lU foo.socket &
$ fuser foo.*
foo.fifo:
foo.socket:
$ procstat -af | awk 'NR == 1 || /foo/'
PID COMM FD T V FLAGS REF OFFSET PRO NAME
6672 cat 0 f - rw------ 2 0 - /home/luser/foo.fifo
11493 nc 3 s - rw------ 2 0 UDS foo.socket
$ fstat | awk 'NR == 1 || $2 ~ /cat/ && $4 ~ 0 || $2 ~ /nc/ && $4 ~ 3'
USER CMD PID FD MOUNT INUM MODE SZ|DV R/W
luser nc 11493 3* local stream fffffe00a980d690
luser cat 6672 0 /home/luser 5982 prw-r--r-- 0 rw
fuser(1) on BusyBox/Linux does show open FIFOs, not sure about sockets.
--
FreeBSD 9.0-CURRENT r222247M amd64
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