split out util-fstab.sh
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1 changed files with 19 additions and 137 deletions
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@ -8,158 +8,40 @@
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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declare -A pseudofs_types=([anon_inodefs]=1
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[autofs]=1
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[bdev]=1
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[binfmt_misc]=1
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[cgroup]=1
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[configfs]=1
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[cpuset]=1
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[debugfs]=1
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[devfs]=1
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[devpts]=1
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[devtmpfs]=1
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[dlmfs]=1
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[fuse.gvfs-fuse-daemon]=1
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[fusectl]=1
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[hugetlbfs]=1
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[mqueue]=1
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[nfsd]=1
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[none]=1
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[pipefs]=1
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[proc]=1
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[pstore]=1
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[ramfs]=1
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[rootfs]=1
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[rpc_pipefs]=1
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[securityfs]=1
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[sockfs]=1
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[spufs]=1
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[sysfs]=1
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[tmpfs]=1)
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declare -A fsck_types=([cramfs]=1
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[exfat]=1
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[ext2]=1
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[ext3]=1
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[ext4]=1
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[ext4dev]=1
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[jfs]=1
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[minix]=1
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[msdos]=1
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[reiserfs]=1
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[vfat]=1
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[xfs]=1)
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ignore_error() {
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"$@" 2>/dev/null
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return 0
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}
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track_mount() {
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if [[ -z $CHROOT_ACTIVE_MOUNTS ]]; then
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CHROOT_ACTIVE_MOUNTS=()
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trap 'chroot_umount' EXIT
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fi
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chroot_mount() {
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mount "$@" && CHROOT_ACTIVE_MOUNTS=("$2" "${CHROOT_ACTIVE_MOUNTS[@]}")
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}
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mount_conditionally() {
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chroot_mount_conditional() {
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local cond=$1; shift
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if eval "$cond"; then
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track_mount "$@"
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chroot_mount "$@"
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fi
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}
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api_fs_mount() {
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# CHROOT_ACTIVE_MOUNTS=()
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# [[ $(trap -p EXIT) ]] && die '(BUG): attempting to overwrite existing EXIT trap'
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# trap 'chroot_umount' EXIT
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mount_conditionally "! mountpoint -q '$1'" "$1" "$1" --bind &&
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track_mount proc "$1/proc" -t proc -o nosuid,noexec,nodev &&
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track_mount sys "$1/sys" -t sysfs -o nosuid,noexec,nodev,ro &&
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# ignore_error mount_conditionally "[[ -d '$1/sys/firmware/efi/efivars' ]]" \
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chroot_api_mount() {
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CHROOT_ACTIVE_MOUNTS=()
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[[ $(trap -p EXIT) ]] && die 'Error! Attempting to overwrite existing EXIT trap'
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trap 'chroot_api_umount' EXIT
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chroot_mount_conditional "! mountpoint -q '$1'" "$1" "$1" --bind &&
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chroot_mount proc "$1/proc" -t proc -o nosuid,noexec,nodev &&
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chroot_mount sys "$1/sys" -t sysfs -o nosuid,noexec,nodev,ro &&
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# ignore_error chroot_mount_conditional "[[ -d '$1/sys/firmware/efi/efivars' ]]" \
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# efivarfs "$1/sys/firmware/efi/efivars" -t efivarfs -o nosuid,noexec,nodev &&
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track_mount udev "$1/dev" -t devtmpfs -o mode=0755,nosuid &&
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track_mount devpts "$1/dev/pts" -t devpts -o mode=0620,gid=5,nosuid,noexec &&
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track_mount shm "$1/dev/shm" -t tmpfs -o mode=1777,nosuid,nodev &&
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track_mount run "$1/run" -t tmpfs -o nosuid,nodev,mode=0755 &&
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track_mount tmp "$1/tmp" -t tmpfs -o mode=1777,strictatime,nodev,nosuid
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chroot_mount udev "$1/dev" -t devtmpfs -o mode=0755,nosuid &&
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chroot_mount devpts "$1/dev/pts" -t devpts -o mode=0620,gid=5,nosuid,noexec &&
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chroot_mount shm "$1/dev/shm" -t tmpfs -o mode=1777,nosuid,nodev &&
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chroot_mount run "$1/run" -t tmpfs -o nosuid,nodev,mode=0755 &&
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chroot_mount tmp "$1/tmp" -t tmpfs -o mode=1777,strictatime,nodev,nosuid
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}
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chroot_umount() {
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chroot_api_umount() {
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umount "${CHROOT_ACTIVE_MOUNTS[@]}"
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# unset CHROOT_ACTIVE_MOUNTS
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}
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fstype_is_pseudofs() {
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(( pseudofs_types["$1"] ))
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}
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fstype_has_fsck() {
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(( fsck_types["$1"] ))
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}
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valid_number_of_base() {
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local base=$1 len=${#2} i=
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for (( i = 0; i < len; i++ )); do
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{ _=$(( $base#${2:i:1} )) || return 1; } 2>/dev/null
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done
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return 0
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}
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mangle() {
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local i= chr= out=
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unset {a..f} {A..F}
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for (( i = 0; i < ${#1}; i++ )); do
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chr=${1:i:1}
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case $chr in
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[[:space:]\\])
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printf -v chr '%03o' "'$chr"
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out+=\\
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;;
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esac
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out+=$chr
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done
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printf '%s' "$out"
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}
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unmangle() {
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local i= chr= out= len=$(( ${#1} - 4 ))
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unset {a..f} {A..F}
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for (( i = 0; i < len; i++ )); do
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chr=${1:i:1}
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case $chr in
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\\)
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if valid_number_of_base 8 "${1:i+1:3}" ||
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valid_number_of_base 16 "${1:i+1:3}"; then
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printf -v chr '%b' "${1:i:4}"
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(( i += 3 ))
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fi
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;;
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esac
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out+=$chr
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done
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printf '%s' "$out${1:i}"
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}
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dm_name_for_devnode() {
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read dm_name <"/sys/class/block/${1#/dev/}/dm/name"
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if [[ $dm_name ]]; then
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printf '/dev/mapper/%s' "$dm_name"
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else
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# don't leave the caller hanging, just print the original name
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# along with the failure.
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print '%s' "$1"
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error 'Failed to resolve device mapper name for: %s' "$1"
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fi
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unset CHROOT_ACTIVE_MOUNTS
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}
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