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SubjectRe: What /proc should contain [was: /proc/driver/microcode]
Hi there.

>> Nope, most /proc access is does via programs written in C.

> That varies a lot from file to file. E.g. I haven't seen any
> programs that are specificly designed to read /proc/atm/* yet,
> and I know of only one (fuser) that reads /proc/mounts,
> extracting only partial information (just to pick two examples
> that I'm quite familiar with).

As a point of reference, here's a slightly tweaked analysis of the
programs on the system I'm reading your mail on. Basically, I ran the
following script...

Q> #!/bin/bash
Q> function use() {
Q> for Z in $* ; do
Q> strings $Z | grep /proc | sed "s=^=$Z ="
Q> done
Q> }
Q> use /{,s}bin/* /usr/{,s}bin/* | sort -u | tee proc-usage
...and then went through it removing comments and print format
strings. Replace /proc with /dev and you'd soon have an equivalent
list for that - although I can report that such is MUCH larger...

There are three programs therein that refer to /proc/mounts ...

/bin/mount
/bin/umount
/usr/bin/eject

...and, as you stated, none that refer to /proc/atm on this system.
However, as this is a RedHat Linux 5.0 based system, that's not
necessarily an up to date reference thereto...

Here's the list anyway...

/bin/kill /proc/%d/cmdline
/bin/kill /proc/%d/stat

/bin/mount /proc/devices
/bin/mount /proc/filesystems
/bin/mount /proc/mounts

/bin/netstat /proc/net
/bin/netstat /proc/net/appletalk
/bin/netstat /proc/net/ax25
/bin/netstat /proc/net/ax25_route
/bin/netstat /proc/net/dev
/bin/netstat /proc/net/ip_masquerade
/bin/netstat /proc/net/ipx
/bin/netstat /proc/net/ipx_route
/bin/netstat /proc/net/netstat
/bin/netstat /proc/net/nr
/bin/netstat /proc/net/nr_neigh
/bin/netstat /proc/net/nr_nodes
/bin/netstat /proc/net/raw
/bin/netstat /proc/net/route
/bin/netstat /proc/net/rt_cache
/bin/netstat /proc/net/snmp
/bin/netstat /proc/net/tcp
/bin/netstat /proc/net/udp
/bin/netstat /proc/net/unix

/bin/umount /proc/devices
/bin/umount /proc/mounts

/sbin/arp /proc/net/appletalk
/sbin/arp /proc/net/arp
/sbin/arp /proc/net/ax25
/sbin/arp /proc/net/ipx
/sbin/arp /proc/net/nr
/sbin/arp /proc/net/unix

/sbin/cardctl /proc/devices

/sbin/cardmgr /proc/devices

/sbin/fdisk /proc/ide/%s/media
/sbin/fdisk /proc/scsi/scsi

/sbin/getty /proc/version

/sbin/ifconfig /proc/net
/sbin/ifconfig /proc/net/appletalk
/sbin/ifconfig /proc/net/ax25
/sbin/ifconfig /proc/net/dev
/sbin/ifconfig /proc/net/ipx
/sbin/ifconfig /proc/net/nr
/sbin/ifconfig /proc/net/unix

/sbin/ifup /proc/sys/kernel/modprobe

/sbin/ipchains /proc/net/ip_fwchains
/sbin/ipchains /proc/net/ip_fwnames
/sbin/ipchains /proc/net/ip_masquerade
/sbin/ipchains /proc/sys/net/ipv4/ip_forward

/sbin/ipmaddr /proc/net/dev_mcast
/sbin/ipmaddr /proc/net/igmp
/sbin/ipmaddr /proc/net/igmp6

/sbin/iptunnel /proc/net/dev

/sbin/killall5 /proc/%s/cmdline
/sbin/killall5 /proc/%s/exe
/sbin/killall5 /proc/%s/stat
/sbin/killall5 /proc/version

/sbin/klogd /proc/kmsg

/sbin/lsmod /proc/modules

/sbin/modprobe /proc/modules

/sbin/pidof /proc/%s/cmdline
/sbin/pidof /proc/%s/exe
/sbin/pidof /proc/%s/stat
/sbin/pidof /proc/version

/sbin/probe /proc/pci

/sbin/rarp /proc/net/ax25
/sbin/rarp /proc/net/nr
/sbin/rarp /proc/net/rarp

/sbin/rmmod /proc/modules

/sbin/rmmod.static /proc/modules

/sbin/route /proc/net/appletalk
/sbin/route /proc/net/ax25
/sbin/route /proc/net/ax25_route
/sbin/route /proc/net/ipx
/sbin/route /proc/net/ipx_route
/sbin/route /proc/net/nr
/sbin/route /proc/net/nr_neigh
/sbin/route /proc/net/nr_nodes
/sbin/route /proc/net/route
/sbin/route /proc/net/rt_cache
/sbin/route /proc/net/unix

/sbin/scsi_info /proc/scsi
/sbin/scsi_info /proc/scsi/%s
/sbin/scsi_info /proc/scsi/scsi

/sbin/slattach /proc/net/ax25
/sbin/slattach /proc/net/nr

/sbin/swapoff /proc/swaps

/sbin/swapon /proc/swaps

/sbin/uugetty /proc/version

/usr/bin/dig /proc/
/usr/bin/dig /proc/interrupts
/usr/bin/dig /proc/meminfo
/usr/bin/dig /proc/rtc
/usr/bin/dig /proc/self/status
/usr/bin/dig /proc/stat

/usr/bin/dnsquery /proc/
/usr/bin/dnsquery /proc/interrupts
/usr/bin/dnsquery /proc/meminfo
/usr/bin/dnsquery /proc/rtc
/usr/bin/dnsquery /proc/self/status
/usr/bin/dnsquery /proc/stat

/usr/bin/eject /proc/mounts

/usr/bin/emacs /proc/loadavg

/usr/bin/fetchmail /proc/net/dev

/usr/bin/free /proc/meminfo

/usr/bin/gmake /proc/loadavg

/usr/bin/gpm-root /proc/loadavg
/usr/bin/gpm-root /proc/meminfo

/usr/bin/host /proc/
/usr/bin/host /proc/interrupts
/usr/bin/host /proc/meminfo
/usr/bin/host /proc/rtc
/usr/bin/host /proc/self/status
/usr/bin/host /proc/stat

/usr/bin/hoststat /proc/loadavg

/usr/bin/hwdiag /proc/cpuinfo
/usr/bin/hwdiag /proc/pci
/usr/bin/hwdiag /proc/scsi/scsi
/usr/bin/hwdiag /proc/version

/usr/bin/lsdev /proc/dma
/usr/bin/lsdev /proc/interrupts
/usr/bin/lsdev /proc/ioports

/usr/bin/mailq /proc/loadavg

/usr/bin/make /proc/loadavg

/usr/bin/mcookie /proc/loadavg
/usr/bin/mcookie /proc/stat

/usr/bin/newaliases /proc/loadavg

/usr/bin/nslookup /proc/
/usr/bin/nslookup /proc/interrupts
/usr/bin/nslookup /proc/meminfo
/usr/bin/nslookup /proc/rtc
/usr/bin/nslookup /proc/self/status
/usr/bin/nslookup /proc/stat

/usr/bin/nsupdate /proc/
/usr/bin/nsupdate /proc/interrupts
/usr/bin/nsupdate /proc/meminfo
/usr/bin/nsupdate /proc/rtc
/usr/bin/nsupdate /proc/self/status
/usr/bin/nsupdate /proc/stat

/usr/bin/pgp /proc/version
/usr/bin/pgpe /proc/version
/usr/bin/pgpk /proc/version
/usr/bin/pgps /proc/version
/usr/bin/pgpv /proc/version

/usr/bin/procinfo /proc/cmdline
/usr/bin/procinfo /proc/devices
/usr/bin/procinfo /proc/dma
/usr/bin/procinfo /proc/filesystems
/usr/bin/procinfo /proc/interrupts
/usr/bin/procinfo /proc/loadavg
/usr/bin/procinfo /proc/meminfo
/usr/bin/procinfo /proc/modules
/usr/bin/procinfo /proc/stat
/usr/bin/procinfo /proc/uptime
/usr/bin/procinfo /proc/version

/usr/bin/purgestat /proc/loadavg

/usr/bin/screen /proc/loadavg

/usr/bin/strace /proc/%d/stat

/usr/bin/top /proc/cpuinfo
/usr/bin/top /proc/meminfo
/usr/bin/top /proc/stat

/usr/bin/vmstat /proc/%s/stat
/usr/bin/vmstat /proc/meminfo
/usr/bin/vmstat /proc/stat

/usr/sbin/atd /proc/loadavg

/usr/sbin/dnskeygen /proc/
/usr/sbin/dnskeygen /proc/interrupts
/usr/sbin/dnskeygen /proc/meminfo
/usr/sbin/dnskeygen /proc/rtc
/usr/sbin/dnskeygen /proc/self/status
/usr/sbin/dnskeygen /proc/stat

/usr/sbin/fuser /proc/%d/stat
/usr/sbin/fuser /proc/net/%s
/usr/sbin/fuser /proc/net/unix

/usr/sbin/in.identd /proc/net/tcp

/usr/sbin/irpd /proc/
/usr/sbin/irpd /proc/interrupts
/usr/sbin/irpd /proc/meminfo
/usr/sbin/irpd /proc/rtc
/usr/sbin/irpd /proc/self/status
/usr/sbin/irpd /proc/stat

/usr/sbin/named /proc/
/usr/sbin/named /proc/interrupts
/usr/sbin/named /proc/meminfo
/usr/sbin/named /proc/rtc
/usr/sbin/named /proc/self/status
/usr/sbin/named /proc/stat

/usr/sbin/named-xfer /proc/
/usr/sbin/named-xfer /proc/interrupts
/usr/sbin/named-xfer /proc/meminfo
/usr/sbin/named-xfer /proc/rtc
/usr/sbin/named-xfer /proc/self/status
/usr/sbin/named-xfer /proc/stat

/usr/sbin/readprofile /proc/profile

/usr/sbin/rwhod /proc/loadavg
/usr/sbin/rwhod /proc/uptime

/usr/sbin/sendmail /proc/loadavg

/usr/sbin/setconsole /proc/openprom/options
/usr/sbin/setconsole /proc/openprom/options/${console}-mode
/usr/sbin/setconsole /proc/openprom/options/input-device
/usr/sbin/setconsole /proc/openprom/options/output-device
Best wishes from Riley.

* Copyright (C) 1999, Memory Alpha Systems.
* All rights and wrongs reserved.

+----------------------------------------------------------------------+
| There is something frustrating about the quality and speed of Linux |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch. |
+----------------------------------------------------------------------+
* http://www.memalpha.cx/Linux/Kernel/

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