diff options
Diffstat (limited to 'backend/modules/partitions')
| -rw-r--r-- | backend/modules/partitions | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/backend/modules/partitions b/backend/modules/partitions new file mode 100644 index 0000000..0d59323 --- /dev/null +++ b/backend/modules/partitions @@ -0,0 +1,251 @@ +#!/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 +} + + |