/proc/[0-9]*/maps where did the (deleted) status go?
From: Jeffrey E. Hundstad (jeffrey_at_hundstad.net)
Date: 11/02/03
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Date: Sat, 01 Nov 2003 21:49:03 -0600 To: linux-kernel@vger.kernel.org
Hello,
In the 2.4.x kernels the /proc/[process id]/maps file contains that
processes current mappings. This is also true with 2.6.0-test9 but I've
noticed a difference. It is a feature I'll miss. In the 2.4 kernels
when a file is mapped but no longer exists (because it has been removed)
the mapping line would contain the text "(deleted)" after it.
I've used this feature after I've updated libraries on my system. I ran
a little scriptlet (see below). It'd tell me which processes were
running with the old copy of the library. This way I restart those
processes.
Is this a feature that can be restored, or perhaps there's a better way
to do it. Let me know?
---- scriptlet library-restart-app follows:
#!/bin/bash
for i in `find /proc/ -mindepth 2 -maxdepth 2 -name "maps" | xargs grep
-a deleted | grep -a -E -v /SYSV[0-9a-z]{8} |grep -a -v /dev/zero | cut
-d ':' -f1 | cut -d '/' -f3 | sort | uniq | sed -e
's/\(.*\)/\/proc\/\1\/cmdline/'`;do echo -n "`echo $i| cut -d '/' -f3`
";cat $i|tr "\000" "\n" |head -1;done---- ---- scriptlet
library-restart-app ends
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