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#!/bin/bash
# Synopsis: list_all_disks
#
# This function lists all disks
# Output example:
# /dev/sda
# /dev/sdb
function list_all_disks()
{
awk -vli="$(awk '{if($2=="sd") print $1;}' /proc/devices)" 'BEGIN{m=split(li,list," ")}{for(i=1;i<=m;i++) if($1==list[i]&&$2%16==0) print "/dev/"$4;}' /proc/partitions
}
# Synopsis: send_list_of_disks
#
# This script sends a list of all disks with size-details to the frontend.
# Output example:
# <installer data> list_of_disks
# /dev/sda 10001908224
# /dev/sdb 64023257088
function send_list_of_disks()
{
send data list_of_disks
list_all_disks | partitions_size_details
}
# Synopsis: list_all_partitions
#
# This function lists all partitions from all disks
# Output example:
# /dev/sda1
# /dev/sda2
# /dev/sdb5
function list_all_partitions()
{
awk -vli="$(awk '{if($2=="sd") print $1;}' /proc/devices)" 'BEGIN{m=split(li,list," ")}{for(i=1;i<=m;i++) if($1==list[i]&&$2%16!=0) print "/dev/"$4;}' /proc/partitions
}
# Synopsis: (e.g.) list_all_partitions | partitions_usage_details
#
# This function lists usage details for a list of partitions from STDIN
# Output example:
# /dev/sda1 filesystem reiserfs
# /dev/sda2 filesystem ext3
# /dev/sda3 other swap
function partitions_usage_details()
{
while read part x
do
[ -e "$part" ] || continue
ID_FS_USAGE="$(/sbin/blkid -p -s USAGE -o value "$part")"
[ "$ID_FS_USAGE" ] || continue
ID_FS_TYPE="$(/sbin/blkid -p -s TYPE -o value "$part")"
echo "$part $ID_FS_USAGE $ID_FS_TYPE"
done
}
# Synopsis: (e.g.) list_all_partitions | partitions_size_details
#
# This function lists size details for a list of partitions from STDIN
# Output example:
# /dev/sda 64023257088
# /dev/sda1 10001908224
function partitions_size_details()
{
while read part x
do
[ -e "$part" ] || continue
echo "$part $(blockdev --getsize64 "$part")"
done
}
# Synopsis: list_partitions [-type <filesystem>] [-disk <disk>] [-usage <usage>]
#
# This function lists all partitions that match all the given parameters
# Output example:
# /dev/sda1
# /dev/sda2
# /dev/sdb5
function list_partitions()
{
unset required_type required_disk;
required_usage="filesystem"
while [ "$1" ]
do
case $1 in
-type)
required_type="$2";
shift
;;
-disk)
required_disk="$2";
shift
;;
-usage)
required_usage="$2";
shift
;;
esac
shift
done
while IFS=" " read part usage type
do
if [ "$usage" = "$required_usage" ]; then
[ "$required_type" -a "$required_type" != "$(get_filesystem $part)" ] && continue
[ "$required_disk" ] && ! echo "$part" | grep -q "^$required_disk" && continue
echo $part
fi
done < <(list_all_partitions | partitions_usage_details)
}
# Synopsis: list_linux_partitions
#
# This function lists all partitions from the disks (by list_all_disks) which have partition Id 0x83 (= Linux)
# Output example:
# /dev/sda4
# /dev/sdb1
function list_linux_partitions()
{
for disk in $(list_all_disks)
do
LC_ALL=C sfdisk -l "$disk" 2>/dev/null | sed 's/[*+]//g;' | gawk '/^\/dev/{if($6 == 83){print $1}}'
done
}
# Synopsis: list_swap_partitions
#
# This function lists all partitions from the disks (by list_all_disks) which have partition Id 0x82 (= Linux swap)
# Output example:
# /dev/sda4
# /dev/sdb1
function list_swap_partitions()
{
for disk in $(list_all_disks)
do
LC_ALL=C sfdisk -l "$disk" 2>/dev/null | sed 's/[*+]//g;' | gawk '/^\/dev/{if($6 == 82){print $1}}'
done
}
# Synopsis: get_disk <partition>
#
# This function returns the disk containing the given partition
# Output example:
# /dev/sda
function get_disk()
{
path="$(udevadm info -q path -n "$1")"
while [ "$path" ]
do
udevadm info -q env -p "$path" | grep -q "^DEVTYPE=disk$" && break
path="$(dirname "$path")"
done
[ "$path" ] && udevadm info --root -q name -p "$path" && return 0
return 1
}
# Synopsis: is_removeable <disk/partition>
#
# This function checks if a disk or partition is removeable (returncode 0) or not (returncode 1)
function is_removeable()
{
DEV="$(get_disk "$1")"
REM=$(cat /sys/block/${DEV#/dev/}/removable 2>/dev/null)
case $(readlink -f /sys/block/${DEV#/dev}) in *usb*) REM=1; esac
[ "$REM" = "1" ] && return 0 || return 1
}
# Synopsis: list_possible_root_partitions
#
# This script lists all possible root-partitions.
# * all linux-partitions and all partitions that have a linux-filesystem
# Output example:
# /dev/sda4
# /dev/sdb1
function list_possible_root_partitions()
{
( list_linux_partitions; list_partitions -type Linux ) | sort -u
}
# Synopsis: send_possible_root_partitions
#
# This script sends a list of all possible root-partitions with size-details to the frontend.
# Output example:
# <installer data> possible_root_partitions
# /dev/sda4 10001908224
# /dev/sdb1 64023257088
function send_possible_root_partitions()
{
send data possible_root_partitions
list_possible_root_partitions | partitions_size_details
}
# Synopsis: send_possible_root_filesystems
#
# This script sends a list of all possible filesystems to format the root-partition with to the frontend.
# Output example:
# <installer data> possible_root_filesystems
# ext4
# ext3
# reiserfs
function send_possible_root_filesystems()
{
send data possible_root_filesystems
for fs in ext4 ext3 reiserfs xfs jfs; do echo $fs; done
}
# Synopsis: get_filesystem <device>
#
# This function returns the filesystem on the supplied device.
# Returned filesystem could be:
# ext4, ext3, ext2, reiserfs, xfs, minix, hfs, efs, reiser4,
# jfs, iso9660, vfat, ntfs, swap, oracleasm, jbd, gfs,
# gfs2, vxfs, romfs, bfs, cramfs, qnx4, udf, ufs, hpfs,
# sysv, swsuspend, ocfs, ocfs2
# Output example:
# ext4
function get_filesystem()
{
[ -x /sbin/blkid ] && /sbin/blkid -s TYPE -o value "$1"
}
# Synopsis: get_filesystem_type [-fs <filesystem>]|<device>
#
# This function returns the type of the filesystem on the supplied device (or filesystem).
# Returned type could be:
# Linux, CD-ROM, Windows, Swap, (not recognized type -> filesystem)
# Output example:
# Linux
function get_filesystem_type()
{
if [ "$1" = "-fs" ]; then
filesystem="$2"
else
filesystem="$(get_filesystem "$1")"
fi
case $filesystem in
ext4|ext3|ext2|reiserfs|xfs|minix|hfs|efs|reiser4|jfs) echo Linux;;
iso9660) echo CD-ROM;;
vfat|ntfs) echo Windows;;
swap) echo Swap;;
*) echo "$filesystem";;
esac
# Other (not recognized) Filesystems:
# oracleasm, jbd, gfs, gfs2, vxfs, romfs, bfs, cramfs,
# qnx4, udf, ufs, hpfs, sysv, swsuspend, ocfs, ocfs2
}
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