Re: [arch-releng] Automagic Profiles Loader

5 Apr 2009

      On Mon, 6 Apr 2009 00:22:11 +1000
Jud  wrote:
...
This code is to be automatically run from a custom Arch Boot Media, it
will call aif with the best matching profile.
Comments and suggestions welcome.
#!/bin/bash
# Proof of Concept - Automagic Profiles Loader
#
# BASIC HARDWARE DETECT
#
# MAC address - output each device on separate line?; array?
mac=$(ifconfig -a | awk '/HWaddr/ {print $NF, $1}')
#echo $mac
# System Architecture - i686/x86_64
# could use CARCH?
arch=$(uname -m)
#echo $arch
# CPU Brand, Model Name, Processors, Sockets, GHz, Family, Model,
Stepping, Flags cpu=$(cat /proc/cpuinfo | awk '/^vendor_id/ {print
$NF; exit}')
#cpu=$(uname -i)
cpu2=$(cat /proc/cpuinfo | grep "model name" | awk '{ for (i=4; i<=NF;
i++) printf("%s ", $i); exit }')
#cpu2=$(uname -p)
cpu3=$(cat /proc/cpuinfo | grep -c processor)
cpu3a=$(cat /proc/cpuinfo | grep "cpu cores" | awk '/^cpu/ {print $NF;
exit}')
cpu4=$(cat /proc/cpuinfo | grep -c physical) # need a better
way; total sockets, ht?
cpu5=$(cat /proc/cpuinfo | grep MHz | awk '/^cpu/ {printf
("%4.1f",$NF/1000); exit}')
cpu5=${cpu5}GHz
cpu6=$(cat /proc/cpuinfo | awk '/family/ {print $NF; exit}')
cpu7=$(cat /proc/cpuinfo | awk '/^model/ {print $NF; exit}')
cpu8=$(cat /proc/cpuinfo | awk '/^stepping/ {print $NF; exit}')
cpu9=$(cat /proc/cpuinfo | grep flags | awk ' { for (i=3; i<=NF; i++)
printf("%s ", $i);exit }')
#echo $cpu $cpu2 $cpu3 $cpu3a $cpu4 $cpu5 $cpu6 $cpu6a $cpu7 $cpu8
#echo $cpu9
# Mainboard Model Number, Chipset - need a much better way
mb=$(dmesg | grep RSDT | awk '/^ACPI/ {print $6, $7}')
#mb2=$(dmesg | grep RSDT)
mb2=$(lspci | grep "Host Bridge")
#echo $mb
#echo $mb2
# Total RAM - GB
mem=$(cat /proc/meminfo | awk '/^MemTotal/ {printf
("%5.1f",$2/1048576)}') mem=${mem/.0/}GB
#echo $mem
# Hard Disk Capacity - GB
#hdd=$(fdisk -l | grep /dev/sda | awk '/^Disk/
{printf("%5.0f",$5/1000000000)}')
hdd=$(cat /proc/partitions | grep sda | awk '/sda/
{printf("%5.0f",$3/1000000); exit}')
if [[ ${hdd:2:1} =~[1-9] && ${#hdd} -ge 3 ]]; then
hdd2=$((${hdd:0:1}+1))$(echo "${hdd//[1-9]/0}" | sed 's/^.\{1\}//g')
else
 hdd2=$hdd
fi
hdd2=${hdd2}HD
#echo $hdd $hdd2
# Video Card Vendor - Others?
vga=$(lspci | grep VGA | tr "[:lower:]" "[:upper:]")
for i in ATI NVIDIA INTEL; do
  if [[ $vga == *${i}* ]]; then
    vga=$i
  fi
done
vga=VGA:$vga
#echo $vga
# VirtualMachine - Am I inside the Matrix?
for i in VBOX VMWARE XEN KVM; do
  vm=$(dmesg | grep -i -o ${i})
  if [[ $vm == *${i}* ]]; then
    vm=${i}; exit 0
  fi
done
is there anything wrong with running in a vm? what's your goal here?
preventing your script to work when it's run in a vm?
...
testline="$mac $arch $cpu $cpu2 $cpu3 $cpu4 $cpu5 $cpu6 $cpu7 $cpu8
$cpu9 $mem $hdd2 $vga $vm"
#echo $testline
#
# PROFILE SELECTOR
#
#[ -r profiles ]
cat profiles | while read line; do
  # Skip Comments and Empty Lines
  [[ ${line:0:1} == "#" ]] && continue
  [[ -z "$line" ]] && continue
# Profile Filename
  if [[ ${line:0:1} == "[" ]] ; then
    answer=$(echo ${line//[/} | cut -d] -f1-1); continue
"$answer?" a name like "$profile" might make more sense here.
...
else
    # Profile Parameters
    line=$(echo "$line" | cut -d \# -f1-1 | sed 's/[ \t]*$//')
    result=""
    # Match Engine
    for each_name in $line; do
      if [[ $testline == *$each_name* ]]; then
        result=$(echo $result $each_name)
      fi
    done
    # Complete Match?
    if [[ $result == $line ]]; then
      echo "Loading Profile..."
      echo "aif -p automatic -c $answer"
maybe you could actually call aif.  but hey that's just an idea :)
Also I would not exit 0, but rather use the same exitcode as aif
itself. can be useful.
      exit 0
    fi
 fi
done
# End of File
I checked your sample config and it looks nice imho.
So it's all blocks of [profilename] with "matching rules" below it
right? 
I'm asking because I remember you said you wanted to be able to reboot
automatically if aif exited successfully.  So I was thinking you could
put such parameters like reboot_on_success in there.  (below the
matching rules, on a per-profile basis). to make your code able to
recognize what is a matching rule and what's an option you could maybe
do like this (just an idea):
[profilename]
match matching rule 1
match matching rule 2
option variable value

Also i would avoid caps as much as possible, it always make it
easier in code if you can know you never need to convert between upper
and lowercase.

PS: APL seems like a good name to me

Dieter

Re: [arch-releng] Automagic Profiles Loader

Dieter Plaetinck