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astpk.py
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astpk.py
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#!/usr/bin/python3
import sys
import ast # Heh funny name coincidence with project name
import subprocess
from anytree.importer import DictImporter
from anytree.exporter import DictExporter
import anytree
import os
import re
args = list(sys.argv)
# TODO ------------
# General code cleanup
# Maybe port for other distros?
# A clean way to completely unistall ast
# -----------------
# Directories
# All images share one /var
# global boot is always at @boot
# *-tmp - temporary directories used to boot deployed image
# *-chr - temporary directories used to chroot into image or copy images around
# /.snapshots/var/var-* == individual /var for each image
# /.snapshots/etc/etc-* == individual /etc for each image
# /.snapshots/boot/boot-* == individual /boot for each image
# /.snapshots/rootfs/snapshot-* == images
# /root/images/*-desc == descriptions
# /usr/share/ast == files that store current snapshot info
# /usr/share/ast/db == package database
# /var/lib/ast(/fstree) == ast files, stores fstree, symlink to /.snapshots/ast
# Import filesystem tree file in this function
def import_tree_file(treename):
treefile = open(treename,"r")
tree = ast.literal_eval(treefile.readline())
return(tree)
# Print out tree with descriptions
def print_tree(tree):
snapshot = get_snapshot()
for pre, fill, node in anytree.RenderTree(tree):
if os.path.isfile(f"/.snapshots/ast/images/{node.name}-desc"):
descfile = open(f"/.snapshots/ast/images/{node.name}-desc","r")
desc = descfile.readline()
descfile.close()
else:
desc = ""
if str(node.name) == "0":
desc = "base image"
if snapshot != str(node.name):
print("%s%s - %s" % (pre, node.name, desc))
else:
print("%s%s*- %s" % (pre, node.name, desc))
# Write new description
def write_desc(snapshot, desc):
os.system(f"touch /.snapshots/ast/images/{snapshot}-desc")
descfile = open(f"/.snapshots/ast/images/{snapshot}-desc","w")
descfile.write(desc)
descfile.close()
# Add to root tree
def append_base_tree(tree,val):
add = anytree.Node(val, parent=tree.root)
# Add child to node
def add_node_to_parent(tree, id, val):
par = (anytree.find(tree, filter_=lambda node: ("x"+str(node.name)+"x") in ("x"+str(id)+"x")))
add = anytree.Node(val, parent=par)
# Clone within node
def add_node_to_level(tree,id, val):
npar = get_parent(tree, id)
par = (anytree.find(tree, filter_=lambda node: ("x"+str(node.name)+"x") in ("x"+str(npar)+"x")))
add = anytree.Node(val, parent=par)
# Remove node from tree
def remove_node(tree, id):
par = (anytree.find(tree, filter_=lambda node: ("x"+str(node.name)+"x") in ("x"+str(id)+"x")))
par.parent = None
# Save tree to file
def write_tree(tree):
exporter = DictExporter()
to_write = exporter.export(tree)
fsfile = open(fstreepath,"w")
fsfile.write(str(to_write))
# Get parent
def get_parent(tree, id):
par = (anytree.find(tree, filter_=lambda node: ("x"+str(node.name)+"x") in ("x"+str(id)+"x")))
return(par.parent.name)
# Return all children for node
def return_children(tree, id):
children = []
par = (anytree.find(tree, filter_=lambda node: ("x"+str(node.name)+"x") in ("x"+str(id)+"x")))
for child in anytree.PreOrderIter(par):
children.append(child.name)
if id in children:
children.remove(id)
return (children)
# Return order to recurse tree
def recurstree(tree, cid):
order = []
for child in (return_children(tree,cid)):
par = get_parent(tree, child)
if child != cid:
order.append(par)
order.append(child)
return (order)
# Get current snapshot
def get_snapshot():
csnapshot = open("/usr/share/ast/snap","r")
snapshot = csnapshot.readline()
csnapshot.close()
snapshot = snapshot.replace('\n',"")
return(snapshot)
# Get drive partition
def get_part():
cpart = open("/.snapshots/ast/part","r")
uuid = cpart.readline().replace('\n',"")
cpart.close()
part = str(subprocess.check_output(f"blkid | grep '{uuid}' | awk '{{print $1}}'", shell=True))
return(part.replace(":","").replace("b'","").replace("\\n'",""))
# Get tmp partition state
def get_tmp():
mount = str(subprocess.check_output("mount | grep 'on / type'", shell=True))
if "tmp0" in mount:
return("tmp0")
else:
return("tmp")
# Deploy image
def deploy(snapshot):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot deploy, snapshot doesn't exist")
else:
update_boot(snapshot)
tmp = get_tmp()
os.system(f"btrfs sub set-default /.snapshots/rootfs/snapshot-{tmp} >/dev/null 2>&1") # Set default volume
untmp()
if "tmp0" in tmp:
tmp = "tmp"
else:
tmp = "tmp0"
etc = snapshot
os.system(f"btrfs sub snap /.snapshots/rootfs/snapshot-{snapshot} /.snapshots/rootfs/snapshot-{tmp} >/dev/null 2>&1")
os.system(f"btrfs sub snap /.snapshots/etc/etc-{snapshot} /.snapshots/etc/etc-{tmp} >/dev/null 2>&1")
os.system(f"btrfs sub create /.snapshots/var/var-{tmp} >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/var/var-{etc}/* /.snapshots/var/var-{tmp} >/dev/null 2>&1")
os.system(f"btrfs sub snap /.snapshots/boot/boot-{snapshot} /.snapshots/boot/boot-{tmp} >/dev/null 2>&1")
os.system(f"mkdir /.snapshots/rootfs/snapshot-{tmp}/etc >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/rootfs/snapshot-{tmp}/var >/dev/null 2>&1")
os.system(f"mkdir /.snapshots/rootfs/snapshot-{tmp}/boot >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/etc/etc-{etc}/* /.snapshots/rootfs/snapshot-{tmp}/etc >/dev/null 2>&1")
os.system(f"btrfs sub snap /var /.snapshots/rootfs/snapshot-{tmp}/var >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/boot/boot-{etc}/* /.snapshots/rootfs/snapshot-{tmp}/boot >/dev/null 2>&1")
os.system(f"echo '{snapshot}' > /.snapshots/rootfs/snapshot-{tmp}/usr/share/ast/snap")
switchtmp()
#os.system(f"rm -rf /var/lib/pacman/* >/dev/null 2>&1") # Clean pacman and systemd directories before copy
os.system(f"rm -rf /var/lib/systemd/* >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/rootfs/snapshot-{tmp}/var/lib/systemd/* >/dev/null 2>&1")
#os.system(f"rm -rf /.snapshots/rootfs/snapshot-{tmp}/var/lib/pacman/* >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/var/var-{etc}/* /.snapshots/rootfs/snapshot-{tmp}/var/ >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r /.snapshots/var/var-{etc}/lib/pacman/* /var/lib/pacman/ >/dev/null 2>&1") # Copy pacman and systemd directories
os.system(f"cp --reflink=auto -r /.snapshots/var/var-{etc}/lib/systemd/* /var/lib/systemd/ >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r /.snapshots/var/var-{etc}/lib/pacman/* /.snapshots/rootfs/snapshot-{tmp}/var/lib/pacman/")
os.system(f"cp --reflink=auto -r /.snapshots/var/var-{etc}/lib/systemd/* /.snapshots/rootfs/snapshot-{tmp}/var/lib/systemd/ >/dev/null 2>&1")
os.system(f"btrfs sub set-default /.snapshots/rootfs/snapshot-{tmp}") # Set default volume
#os.system(f"chattr -RV +i /.snapshots/rootfs/snapshot-{tmp}/usr > /dev/null 2>&1")
print(f"{snapshot} was deployed to /")
# Add node to branch
def extend_branch(snapshot, desc=""):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot branch, snapshot doesn't exist")
else:
i = findnew()
os.system(f"btrfs sub snap -r /.snapshots/rootfs/snapshot-{snapshot} /.snapshots/rootfs/snapshot-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-{snapshot} /.snapshots/etc/etc-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/var/var-{snapshot} /.snapshots/var/var-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/boot/boot-{snapshot} /.snapshots/boot/boot-{i} >/dev/null 2>&1")
add_node_to_parent(fstree,snapshot,i)
write_tree(fstree)
if desc: write_desc(i, desc)
print(f"branch {i} added to {snapshot}")
# Clone branch under same parent,
def clone_branch(snapshot):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot clone, snapshot doesn't exist")
else:
i = findnew()
os.system(f"btrfs sub snap -r /.snapshots/rootfs/snapshot-{snapshot} /.snapshots/rootfs/snapshot-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-{snapshot} /.snapshots/etc/etc-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/var/var-{snapshot} /.snapshots/var/var-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/boot/boot-{snapshot} /.snapshots/boot/boot-{i} >/dev/null 2>&1")
add_node_to_level(fstree,snapshot,i)
write_tree(fstree)
desc = str(f"clone of {snapshot}")
write_desc(i, desc)
print(f"branch {i} added to parent of {snapshot}")
# Clone under specified parent
def clone_under(snapshot, branch):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")) or (not(os.path.exists(f"/.snapshots/rootfs/snapshot-{branch}"))):
print("cannot clone, snapshot doesn't exist")
else:
i = findnew()
os.system(f"btrfs sub snap -r /.snapshots/rootfs/snapshot-{branch} /.snapshots/rootfs/snapshot-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-{branch} /.snapshots/etc/etc-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/var/var-{branch} /.snapshots/var/var-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/boot/boot-{branch} /.snapshots/boot/boot-{i} >/dev/null 2>&1")
add_node_to_parent(fstree,snapshot,i)
write_tree(fstree)
desc = str(f"clone of {snapshot}")
write_desc(i, desc)
print(f"branch {i} added to {snapshot}")
# Lock ast
def ast_lock():
os.system("touch /.snapshots/ast/lock-disable")
# Unlock
def ast_unlock():
os.system("rm -rf /.snapshots/ast/lock")
def get_lock():
if os.path.exists("/.snapshots/ast/lock"):
return(True)
else:
return(False)
# Recursively remove package in tree
def remove_from_tree(tree,treename,pkg):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{treename}")):
print("cannot update, tree doesn't exist")
else:
remove(treename, pkg)
order = recurstree(tree, treename)
if len(order) > 2:
order.remove(order[0])
order.remove(order[0])
while True:
if len(order) < 2:
break
arg = order[0]
sarg = order[1]
print(arg,sarg)
order.remove(order[0])
order.remove(order[0])
remove(sarg,pkg)
print(f"tree {treename} was updated")
# Recursively run an update in tree
def update_tree(tree,treename):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{treename}")):
print("cannot update, tree doesn't exist")
else:
upgrade(treename)
order = recurstree(tree, treename)
if len(order) > 2:
order.remove(order[0])
order.remove(order[0])
while True:
if len(order) < 2:
break
arg = order[0]
sarg = order[1]
print(arg,sarg)
order.remove(order[0])
order.remove(order[0])
autoupgrade(sarg)
print(f"tree {treename} was updated")
# Recursively run an update in tree
def run_tree(tree,treename,cmd):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{treename}")):
print("cannot update, tree doesn't exist")
else:
prepare(treename)
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{treename} {cmd}")
posttrans(treename)
order = recurstree(tree, treename)
if len(order) > 2:
order.remove(order[0])
order.remove(order[0])
while True:
if len(order) < 2:
break
arg = order[0]
sarg = order[1]
print(arg,sarg)
order.remove(order[0])
order.remove(order[0])
prepare(sarg)
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{sarg} {cmd}")
posttrans(sarg)
print(f"tree {treename} was updated")
# Sync tree and all it's snapshots
def sync_tree(tree,treename,forceOffline):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{treename}")):
print("cannot sync, tree doesn't exist")
else:
if not forceOffline: # Syncing tree automatically updates it, unless 'force-sync' is used
update_tree(tree, treename)
order = recurstree(tree, treename)
if len(order) > 2:
order.remove(order[0])
order.remove(order[0])
while True:
if len(order) < 2:
break
arg = order[0]
sarg = order[1]
print(arg,sarg)
order.remove(order[0])
order.remove(order[0])
prepare(sarg)
#os.system(f"cp --reflink=auto -r /.snapshots/var/var-{arg}/lib/pacman/local/* /.snapshots/var/var-chr{sarg}/lib/pacman/local/ >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/var/var-{arg}/lib/systemd/* /.snapshots/var/var-chr{sarg}/lib/systemd/ >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r /.snapshots/var/var-{arg}/lib/pacman/local/* /.snapshots/rootfs/snapshot-chr{sarg}/var/lib/pacman/local/ >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/var/var-{arg}/lib/systemd/* /.snapshots/rootfs/snapshot-chr{sarg}/var/lib/systemd/ >/dev/null 2>&1")
os.system(f"cp --reflink=auto -n -r /.snapshots/rootfs/snapshot-{arg}/* /.snapshots/rootfs/snapshot-chr{sarg}/ >/dev/null 2>&1")
posttrans(sarg)
print(f"tree {treename} was synced")
# Clone tree
def clone_as_tree(snapshot):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot clone, snapshot doesn't exist")
else:
i = findnew()
os.system(f"btrfs sub snap -r /.snapshots/rootfs/snapshot-{snapshot} /.snapshots/rootfs/snapshot-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-{snapshot} /.snapshots/etc/etc-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/var/var-{snapshot} /.snapshots/var/var-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/boot/boot-{snapshot} /.snapshots/boot/boot-{i} >/dev/null 2>&1")
append_base_tree(fstree,i)
write_tree(fstree)
desc = str(f"clone of {snapshot}")
write_desc(i, desc)
print(f"tree {i} cloned from {snapshot}")
# Creates new tree from base file
def new_snapshot(desc=""):
i = findnew()
os.system(f"btrfs sub snap -r /.snapshots/rootfs/snapshot-0 /.snapshots/rootfs/snapshot-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-0 /.snapshots/etc/etc-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/boot/boot-0 /.snapshots/boot/boot-{i} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/var/var-0 /.snapshots/var/var-{i} >/dev/null 2>&1")
append_base_tree(fstree,i)
write_tree(fstree)
if desc: write_desc(i, desc)
print(f"new tree {i} created")
# Calls print function
def show_fstree():
print_tree(fstree)
# Saves changes made to /etc to image
def update_etc():
tmp = get_tmp()
snapshot = get_snapshot()
os.system(f"btrfs sub del /.snapshots/etc/etc-{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-{tmp} /.snapshots/etc/etc-{snapshot} >/dev/null 2>&1")
# Update boot
def update_boot(snapshot):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot update boot, snapshot doesn't exist")
else:
tmp = get_tmp()
part = get_part()
prepare(snapshot)
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} grub-mkconfig {part} -o /boot/grub/grub.cfg")
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} sed -i s,snapshot-chr{snapshot},snapshot-{tmp},g /boot/grub/grub.cfg")
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} sed -i '0,/astOS\ Linux/s//astOS\ Linux\ snapshot\ {snapshot}/' /boot/grub/grub.cfg")
posttrans(snapshot)
# Chroot into snapshot
def chroot(snapshot):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot chroot, snapshot doesn't exist")
elif snapshot == "0":
print("changing base image is not allowed")
else:
prepare(snapshot)
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot}")
posttrans(snapshot)
# Run command in snapshot
def chrrun(snapshot,cmd):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot chroot, snapshot doesn't exist")
elif snapshot == "0":
print("changing base image is not allowed")
else:
prepare(snapshot)
os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} {cmd}")
posttrans(snapshot)
# Clean chroot mount dirs
def unchr(snapshot):
os.system(f"btrfs sub del /.snapshots/etc/etc-chr{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/var/var-chr{snapshot} >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/var/var-chr{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/boot/boot-chr{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-chr{snapshot}/* >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-chr{snapshot} >/dev/null 2>&1")
# Clean tmp dirs
def untmp():
tmp = get_tmp()
if "tmp0" in tmp:
tmp = "tmp"
else:
tmp = "tmp0"
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-{tmp}/* >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-{tmp} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/etc/etc-{tmp} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/var/var-{tmp} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/boot/boot-{tmp} >/dev/null 2>&1")
# Install live
def live_install(pkg):
tmp = get_tmp()
part = get_part()
#os.system(f"chattr -RV -i /.snapshots/rootfs/snapshot-{tmp}/usr > /dev/null 2>&1")
os.system(f"mount --bind /.snapshots/rootfs/snapshot-{tmp} /.snapshots/rootfs/snapshot-{tmp} > /dev/null 2>&1")
os.system(f"mount --bind /home /.snapshots/rootfs/snapshot-{tmp}/home > /dev/null 2>&1")
os.system(f"mount --bind /var /.snapshots/rootfs/snapshot-{tmp}/var > /dev/null 2>&1")
os.system(f"mount --bind /etc /.snapshots/rootfs/snapshot-{tmp}/etc > /dev/null 2>&1")
os.system(f"mount --bind /tmp /.snapshots/rootfs/snapshot-{tmp}/tmp > /dev/null 2>&1")
os.system(f"arch-chroot /.snapshots/rootfs/snapshot-{tmp} pacman -S --overwrite \\* --noconfirm {pkg}")
os.system(f"umount /.snapshots/rootfs/snapshot-{tmp}/* > /dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-{tmp} > /dev/null 2>&1")
#os.system(f"chattr -RV +i /.snapshots/rootfs/snapshot-{tmp}/usr > /dev/null 2>&1")
# Live unlocked shell
def live_unlock():
tmp = get_tmp()
part = get_part()
#os.system(f"chattr -RV -i /.snapshots/rootfs/snapshot-{tmp}/usr > /dev/null 2>&1")
os.system(f"mount --bind /.snapshots/rootfs/snapshot-{tmp} /.snapshots/rootfs/snapshot-{tmp} > /dev/null 2>&1")
os.system(f"mount --bind /home /.snapshots/rootfs/snapshot-{tmp}/home > /dev/null 2>&1")
os.system(f"mount --bind /var /.snapshots/rootfs/snapshot-{tmp}/var > /dev/null 2>&1")
os.system(f"mount --bind /etc /.snapshots/rootfs/snapshot-{tmp}/etc > /dev/null 2>&1")
os.system(f"mount --bind /tmp /.snapshots/rootfs/snapshot-{tmp}/tmp > /dev/null 2>&1")
os.system(f"arch-chroot /.snapshots/rootfs/snapshot-{tmp}")
os.system(f"umount /.snapshots/rootfs/snapshot-{tmp}/* > /dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-{tmp} > /dev/null 2>&1")
#os.system(f"chattr -RV +i /.snapshots/rootfs/snapshot-{tmp}/usr > /dev/null 2>&1")
# Install packages
def install(snapshot,pkg):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot install, snapshot doesn't exist")
elif snapshot == "0":
print("changing base image is not allowed")
else:
prepare(snapshot)
excode = str(os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} pacman -S {pkg} --overwrite '/var/*'"))
if int(excode) == 0:
posttrans(snapshot)
print(f"snapshot {snapshot} updated successfully")
else:
print("install failed, changes were discarded")
# Remove packages
def remove(snapshot,pkg):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot remove, snapshot doesn't exist")
elif snapshot == "0":
print("changing base image is not allowed")
else:
prepare(snapshot)
excode = str(os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} pacman --noconfirm -Rns {pkg}"))
if int(excode) == 0:
posttrans(snapshot)
print(f"snapshot {snapshot} updated successfully")
else:
print("remove failed, changes were discarded")
# Delete tree or branch
def delete(snapshot):
print(f"Are you sure you want to delete snapshot {snapshot}? (y/N)")
choice = input("> ")
run = True
if choice.casefold() != "y":
print("Aborted")
run = False
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot delete, tree doesn't exist")
elif snapshot == "0":
print("changing base image is not allowed")
elif run == True:
children = return_children(fstree,snapshot)
os.system(f"btrfs sub del /.snapshots/boot/boot-{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/etc/etc-{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/var/var-{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-{snapshot} >/dev/null 2>&1")
for child in children: # This deletes the node itself along with it's children
os.system(f"btrfs sub del /.snapshots/boot/boot-{child} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/etc/etc-{child} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/var/var-{child} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-{child} >/dev/null 2>&1")
remove_node(fstree,snapshot) # Remove node from tree or root
write_tree(fstree)
print(f"snapshot {snapshot} removed")
# Update base
def update_base():
prepare("0")
os.system(f"chroot /.snapshots/rootfs/snapshot-chr0 pacman -Syyu")
posttrans("0")
# Prepare snapshot to chroot dir to install or chroot into
def prepare(snapshot):
unchr(snapshot)
part = get_part()
etc = snapshot
os.system(f"btrfs sub snap /.snapshots/rootfs/snapshot-{snapshot} /.snapshots/rootfs/snapshot-chr{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub snap /.snapshots/etc/etc-{snapshot} /.snapshots/etc/etc-chr{snapshot} >/dev/null 2>&1")
os.system(f"mkdir -p /.snapshots/var/var-chr{snapshot} >/dev/null 2>&1")
os.system(f"mount --bind /.snapshots/rootfs/snapshot-chr{snapshot} /.snapshots/rootfs/snapshot-chr{snapshot} >/dev/null 2>&1") # Pacman gets weird when chroot directory is not a mountpoint, so this mount is necessary
os.system(f"mount --bind /var /.snapshots/rootfs/snapshot-chr{snapshot}/var >/dev/null 2>&1")
os.system(f"mount --rbind /dev /.snapshots/rootfs/snapshot-chr{snapshot}/dev >/dev/null 2>&1")
os.system(f"mount --rbind /sys /.snapshots/rootfs/snapshot-chr{snapshot}/sys >/dev/null 2>&1")
os.system(f"mount --rbind /tmp /.snapshots/rootfs/snapshot-chr{snapshot}/tmp >/dev/null 2>&1")
os.system(f"mount --rbind /proc /.snapshots/rootfs/snapshot-chr{snapshot}/proc >/dev/null 2>&1")
#os.system(f"chmod 0755 /.snapshots/rootfs/snapshot-chr/var >/dev/null 2>&1") # For some reason the permission needs to be set here
os.system(f"btrfs sub snap /.snapshots/boot/boot-{snapshot} /.snapshots/boot/boot-chr{snapshot} >/dev/null 2>&1")
os.system(f"cp -r --reflink=auto /.snapshots/etc/etc-chr{snapshot}/* /.snapshots/rootfs/snapshot-chr{snapshot}/etc >/dev/null 2>&1")
os.system(f"cp -r --reflink=auto /.snapshots/boot/boot-chr{snapshot}/* /.snapshots/rootfs/snapshot-chr{snapshot}/boot >/dev/null 2>&1")
#os.system(f"rm -rf /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/pacman/* >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/systemd/* >/dev/null 2>&1")
#os.system(f"cp -r --reflink=auto /.snapshots/var/var-{snapshot}/lib/pacman/* /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/pacman/ >/dev/null 2>&1")
os.system(f"cp -r --reflink=auto /.snapshots/var/var-{snapshot}/lib/systemd/* /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/systemd/ >/dev/null 2>&1")
os.system(f"mount --bind /home /.snapshots/rootfs/snapshot-chr{snapshot}/home >/dev/null 2>&1")
os.system(f"mount --rbind /run /.snapshots/rootfs/snapshot-chr{snapshot}/run >/dev/null 2>&1")
os.system(f"cp /etc/machine-id /.snapshots/rootfs/snapshot-chr{snapshot}/etc/machine-id")
os.system(f"mkdir -p /.snapshots/rootfs/snapshot-chr{snapshot}/.snapshots/ast && cp -f /.snapshots/ast/fstree /.snapshots/rootfs/snapshot-chr{snapshot}/.snapshots/ast/")
os.system(f"mount --bind /etc/resolv.conf /.snapshots/rootfs/snapshot-chr{snapshot}/etc/resolv.conf >/dev/null 2>&1")
# Post transaction function, copy from chroot dirs back to read only image dir
def posttrans(snapshot):
etc = snapshot
tmp = get_tmp()
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot} >/dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot}/etc/resolv.conf >/dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot}/home >/dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot}/run >/dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot}/dev >/dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot}/sys >/dev/null 2>&1")
os.system(f"umount /.snapshots/rootfs/snapshot-chr{snapshot}/proc >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-{snapshot} >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/etc/etc-chr{snapshot}/* >/dev/null 2>&1")
os.system(f"cp -r --reflink=auto /.snapshots/rootfs/snapshot-chr{snapshot}/etc/* /.snapshots/etc/etc-chr{snapshot} >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/var/var-chr{snapshot}/* >/dev/null 2>&1")
os.system(f"mkdir -p /.snapshots/var/var-chr{snapshot}/lib/systemd >/dev/null 2>&1")
#os.system(f"mkdir -p /.snapshots/var/var-chr{snapshot}/lib/pacman >/dev/null 2>&1")
os.system(f"cp -r --reflink=auto /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/systemd/* /.snapshots/var/var-chr{snapshot}/lib/systemd >/dev/null 2>&1")
#os.system(f"cp -r --reflink=auto /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/pacman/* /.snapshots/var/var-chr{snapshot}/lib/pacman >/dev/null 2>&1")
os.system(f"cp -r -n --reflink=auto /.snapshots/rootfs/snapshot-chr{snapshot}/var/cache/pacman/pkg/* /var/cache/pacman/pkg/ >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/boot/boot-chr{snapshot}/* >/dev/null 2>&1")
os.system(f"cp -r --reflink=auto /.snapshots/rootfs/snapshot-chr{snapshot}/boot/* /.snapshots/boot/boot-chr{snapshot} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/etc/etc-{etc} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/var/var-{etc} >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/boot/boot-{etc} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/etc/etc-chr{snapshot} /.snapshots/etc/etc-{etc} >/dev/null 2>&1")
os.system(f"btrfs sub create /.snapshots/var/var-{etc} >/dev/null 2>&1")
os.system(f"mkdir -p /.snapshots/var/var-{etc}/lib/systemd >/dev/null 2>&1")
#os.system(f"mkdir -p /.snapshots/var/var-{etc}/lib/pacman >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/var/var-chr{snapshot}/lib/systemd/* /.snapshots/var/var-{etc}/lib/systemd >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r /.snapshots/rootfs/snapshot-chr{snapshot}/.snapshots/ast/fstree /.snapshots/ast/ >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r /.snapshots/var/var-chr{snapshot}/lib/pacman/* /.snapshots/var/var-{etc}/lib/pacman >/dev/null 2>&1")
#os.system(f"rm -rf /var/lib/pacman/* >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r /.snapshots/rootfs/snapshot-{tmp}/var/lib/pacman/* /var/lib/pacman >/dev/null 2>&1")
os.system(f"rm -rf /var/lib/systemd/* >/dev/null 2>&1")
os.system(f"cp --reflink=auto -r /.snapshots/rootfs/snapshot-{tmp}/var/lib/systemd/* /var/lib/systemd >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r -n /.snapshots/rootfs/snapshot-chr{snapshot}/var/lib/* /var/lib/ >/dev/null 2>&1")
#os.system(f"cp --reflink=auto -r -n /.snapshots/rootfs/snapshot-chr{snapshot}/var/games/* /var/games/ >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/rootfs/snapshot-chr{snapshot} /.snapshots/rootfs/snapshot-{snapshot} >/dev/null 2>&1")
# os.system(f"btrfs sub snap -r /.snapshots/var/var-chr{snapshot} /.snapshots/var/var-{etc} >/dev/null 2>&1")
os.system(f"btrfs sub snap -r /.snapshots/boot/boot-chr{snapshot} /.snapshots/boot/boot-{etc} >/dev/null 2>&1")
unchr(snapshot)
# Upgrade snapshot
def upgrade(snapshot):
if not (os.path.exists(f"/.snapshots/rootfs/snapshot-{snapshot}")):
print("cannot upgrade, snapshot doesn't exist")
elif snapshot == "0":
print("changing base image is not allowed")
else:
prepare(snapshot)
excode = str(os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} pacman -Syyu")) # Default upgrade behaviour is now "safe" update, meaning failed updates get fully discarded
if int(excode) == 0:
posttrans(snapshot)
print(f"snapshot {snapshot} updated successfully")
else:
print("update failed, changes were discarded")
# Noninteractive update
def autoupgrade(snapshot):
prepare(snapshot)
excode = str(os.system(f"chroot /.snapshots/rootfs/snapshot-chr{snapshot} pacman --noconfirm -Syyu"))
if int(excode) == 0:
posttrans(snapshot)
os.system("echo 0 > /.snapshots/ast/upstate")
os.system("echo $(date) >> /.snapshots/ast/upstate")
else:
os.system("echo 1 > /.snapshots/ast/upstate")
os.system("echo $(date) >> /.snapshots/ast/upstate")
# Check if last update was successful
def check_update():
upstate = open("/.snapshots/ast/upstate", "r")
line = upstate.readline()
date = upstate.readline()
if "1" in line:
print(f"Last update on {date} failed")
if "0" in line:
print(f"Last update on {date} completed succesully")
upstate.close()
def chroot_check():
chroot = True # When inside chroot
with open("/proc/mounts", "r") as mounts:
for line in mounts:
if str("/.snapshots btrfs") in str(line):
chroot = False
return(chroot)
# Rollback last booted deployment
def rollback():
tmp = get_tmp()
i = findnew()
clone_as_tree(tmp)
write_desc(i, "rollback")
deploy(i)
# Switch between /tmp deployments
def switchtmp():
mount = get_tmp()
part = get_part()
# This part is useless? Dumb stuff
os.system(f"mkdir -p /etc/mnt/boot >/dev/null 2>&1")
os.system(f"mount {part} -o subvol=@boot /etc/mnt/boot") # Mount boot partition for writing
if "tmp0" in mount:
os.system("cp --reflink=auto -r /.snapshots/rootfs/snapshot-tmp/boot/* /etc/mnt/boot")
os.system("sed -i 's,@.snapshots/rootfs/snapshot-tmp0,@.snapshots/rootfs/snapshot-tmp,g' /etc/mnt/boot/grub/grub.cfg") # Overwrite grub config boot subvolume
os.system("sed -i 's,@.snapshots/rootfs/snapshot-tmp0,@.snapshots/rootfs/snapshot-tmp,g' /.snapshots/rootfs/snapshot-tmp/boot/grub/grub.cfg")
os.system("sed -i 's,@.snapshots/rootfs/snapshot-tmp0,@.snapshots/rootfs/snapshot-tmp,g' /.snapshots/rootfs/snapshot-tmp/etc/fstab") # Write fstab for new deployment
os.system("sed -i 's,@.snapshots/etc/etc-tmp0,@.snapshots/etc/etc-tmp,g' /.snapshots/rootfs/snapshot-tmp/etc/fstab")
# os.system("sed -i 's,@.snapshots/var/var-tmp0,@.snapshots/var/var-tmp,g' /.snapshots/rootfs/snapshot-tmp/etc/fstab")
os.system("sed -i 's,@.snapshots/boot/boot-tmp0,@.snapshots/boot/boot-tmp,g' /.snapshots/rootfs/snapshot-tmp/etc/fstab")
sfile = open("/.snapshots/rootfs/snapshot-tmp0/usr/share/ast/snap","r")
snap = sfile.readline()
snap = snap.replace(" ", "")
sfile.close()
else:
os.system("cp --reflink=auto -r /.snapshots/rootfs/snapshot-tmp0/boot/* /etc/mnt/boot")
os.system("sed -i 's,@.snapshots/rootfs/snapshot-tmp,@.snapshots/rootfs/snapshot-tmp0,g' /etc/mnt/boot/grub/grub.cfg")
os.system("sed -i 's,@.snapshots/rootfs/snapshot-tmp,@.snapshots/rootfs/snapshot-tmp0,g' /.snapshots/rootfs/snapshot-tmp0/boot/grub/grub.cfg")
os.system("sed -i 's,@.snapshots/rootfs/snapshot-tmp,@.snapshots/rootfs/snapshot-tmp0,g' /.snapshots/rootfs/snapshot-tmp0/etc/fstab")
os.system("sed -i 's,@.snapshots/etc/etc-tmp,@.snapshots/etc/etc-tmp0,g' /.snapshots/rootfs/snapshot-tmp0/etc/fstab")
# os.system("sed -i 's,@.snapshots/var/var-tmp,@.snapshots/var/var-tmp0,g' /.snapshots/rootfs/snapshot-tmp0/etc/fstab")
os.system("sed -i 's,@.snapshots/boot/boot-tmp,@.snapshots/boot/boot-tmp0,g' /.snapshots/rootfs/snapshot-tmp0/etc/fstab")
sfile = open("/.snapshots/rootfs/snapshot-tmp/usr/share/ast/snap", "r")
snap = sfile.readline()
snap = snap.replace(" ","")
sfile.close()
#
snap = snap.replace('\n',"")
grubconf = open("/etc/mnt/boot/grub/grub.cfg","r")
line = grubconf.readline()
while "BEGIN /etc/grub.d/10_linux" not in line:
line = grubconf.readline()
line = grubconf.readline()
gconf = str("")
while "}" not in line:
gconf = str(gconf)+str(line)
line = grubconf.readline()
if "snapshot-tmp0" in gconf:
gconf = gconf.replace("snapshot-tmp0","snapshot-tmp")
else:
gconf = gconf.replace("snapshot-tmp", "snapshot-tmp0")
if "astOS Linux" in gconf:
gconf = re.sub('\d', '', gconf)
gconf = gconf.replace(f"astOS Linux snapshot",f"astOS last booted deployment (snapshot {snap})")
grubconf.close()
os.system("sed -i '$ d' /etc/mnt/boot/grub/grub.cfg")
grubconf = open("/etc/mnt/boot/grub/grub.cfg", "a")
grubconf.write(gconf)
grubconf.write("}\n")
grubconf.write("### END /etc/grub.d/41_custom ###")
grubconf.close()
grubconf = open("/.snapshots/rootfs/snapshot-tmp0/boot/grub/grub.cfg","r")
line = grubconf.readline()
while "BEGIN /etc/grub.d/10_linux" not in line:
line = grubconf.readline()
line = grubconf.readline()
gconf = str("")
while "}" not in line:
gconf = str(gconf)+str(line)
line = grubconf.readline()
if "snapshot-tmp0" in gconf:
gconf = gconf.replace("snapshot-tmp0","snapshot-tmp")
else:
gconf = gconf.replace("snapshot-tmp", "snapshot-tmp0")
if "astOS Linux" in gconf:
gconf = re.sub('\d', '', gconf)
gconf = gconf.replace(f"astOS Linux snapshot", f"astOS last booted deployment (snapshot {snap})")
grubconf.close()
os.system("sed -i '$ d' /.snapshots/rootfs/snapshot-tmp0/boot/grub/grub.cfg")
grubconf = open("/.snapshots/rootfs/snapshot-tmp0/boot/grub/grub.cfg", "a")
grubconf.write(gconf)
grubconf.write("}\n")
grubconf.write("### END /etc/grub.d/41_custom ###")
grubconf.close()
os.system("umount /etc/mnt/boot >/dev/null 2>&1")
# Clear all temporary snapshots
def tmpclear():
os.system(f"btrfs sub del /.snapshots/etc/etc-chr* >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/var/var-chr* >/dev/null 2>&1")
os.system(f"rm -rf /.snapshots/var/var-chr* >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/boot/boot-chr* >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-chr*/* >/dev/null 2>&1")
os.system(f"btrfs sub del /.snapshots/rootfs/snapshot-chr* >/dev/null 2>&1")
# Find new unused image dir
def findnew():
i = 0
snapshots = os.listdir("/.snapshots/rootfs")
etcs = os.listdir("/.snapshots/etc")
vars = os.listdir("/.snapshots/var")
boots = os.listdir("/.snapshots/boot")
snapshots.append(etcs)
snapshots.append(vars)
snapshots.append(boots)
while True:
i += 1
if str(f"snapshot-{i}") not in snapshots and str(f"etc-{i}") not in snapshots and str(f"var-{i}") not in snapshots and str(f"boot-{i}") not in snapshots:
return(i)
# Main function
def main(args):
snapshot = get_snapshot() # Get current snapshot
etc = snapshot
importer = DictImporter() # Dict importer
exporter = DictExporter() # And exporter
isChroot = chroot_check()
lock = get_lock() # True = locked
global fstree # Currently these are global variables, fix sometime
global fstreepath # ---
fstreepath = str("/.snapshots/ast/fstree") # Path to fstree file
fstree = importer.import_(import_tree_file("/.snapshots/ast/fstree")) # Import fstree file
# Recognize argument and call appropriate function
arg = args[1]
if isChroot == True and ("--chroot" not in args):
print("Please don't use ast inside a chroot")
elif lock == True:
print("ast is locked, to manually unlock run 'rm -rf /var/lib/ast/lock'")
elif arg == "new-tree" or arg == "new":
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
new_snapshot(str(" ").join(args_2))
elif arg == "boot-update" or arg == "boot":
update_boot(args[args.index(arg)+1])
elif arg == "chroot" or arg == "cr" and (lock != True):
ast_lock()
chroot(args[args.index(arg)+1])
ast_unlock()
elif arg == "live-chroot":
ast_lock()
live_unlock()
ast_unlock()
elif arg == "install" or (arg == "in") and (lock != True):
ast_lock()
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
live = False
if args_2[0] == "--live":
args_2.remove(args_2[0])
if args_2[0] == get_snapshot():
live = True
csnapshot = args_2[0]
args_2.remove(args_2[0])
install(csnapshot, str(" ").join(args_2))
if live:
live_install(str(" ").join(args_2))
ast_unlock()
elif arg == "run" and (lock != True):
ast_lock()
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
csnapshot = args_2[0]
args_2.remove(args_2[0])
chrrun(csnapshot, str(" ").join(args_2))
ast_unlock()
elif arg == "add-branch" or arg == "branch":
extend_branch(args[args.index(arg)+1])
elif arg == "tmpclear" or arg == "tmp":
tmpclear()
elif arg == "clone-branch" or arg == "cbranch":
clone_branch(args[args.index(arg)+1])
elif arg == "clone-under" or arg == "ubranch":
clone_under(args[args.index(arg)+1], args[args.index(arg)+2])
elif arg == "clone" or arg == "tree-clone":
clone_as_tree(args[args.index(arg)+1])
elif arg == "deploy":
deploy(args[args.index(arg)+1])
elif arg == "rollback":
rollback()
elif arg == "upgrade" or arg == "up" and (lock != True):
ast_lock()
upgrade(args[args.index(arg)+1])
ast_unlock()
elif arg == "etc-update" or arg == "etc" and (lock != True):
ast_lock()
update_etc()
ast_unlock()
elif arg == "current" or arg == "c":
print(snapshot)
elif arg == "rm-snapshot" or arg == "del":
delete(args[args.index(arg)+1])
elif arg == "remove" and (lock != True):
ast_lock()
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
csnapshot = args_2[0]
args_2.remove(args_2[0])
remove(csnapshot, str(" ").join(args_2))
ast_unlock()
elif arg == "desc" or arg == "description":
n_lay = args[args.index(arg)+1]
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
args_2.remove(args_2[0])
write_desc(n_lay, str(" ").join(args_2))
elif arg == "base-update" or arg == "bu" and (lock != True):
ast_lock()
update_base()
ast_unlock()
elif arg == "sync" or arg == "tree-sync" and (lock != True):
ast_lock()
sync_tree(fstree,args[args.index(arg)+1],False)
ast_unlock()
elif arg == "fsync" or arg == "force-sync" and (lock != True):
ast_lock()
sync_tree(fstree,args[args.index(arg)+1],True)
ast_unlock()
elif arg == "auto-upgrade" and (lock != True):
ast_lock()
autoupgrade(snapshot)
ast_unlock()
elif arg == "check":
check_update()
elif arg == "tree-upgrade" or arg == "tupgrade" and (lock != True):
ast_lock()
upgrade(args[args.index(arg)+1])
update_tree(fstree,args[args.index(arg)+1])
ast_unlock()
elif arg == "tree-run" or arg == "trun" and (lock != True):
ast_lock()
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
csnapshot = args_2[0]
args_2.remove(args_2[0])
run_tree(fstree, csnapshot, str(" ").join(args_2))
ast_unlock()
elif arg == "tree-rmpkg" or arg == "tremove" and (lock != True):
ast_lock()
args_2 = args
args_2.remove(args_2[0])
args_2.remove(args_2[0])
csnapshot = args_2[0]
args_2.remove(args_2[0])
remove(csnapshot, str(" ").join(args_2))
remove_from_tree(fstree, csnapshot, str(" ").join(args_2))
ast_unlock()
elif arg == "tree":
show_fstree()
else:
print("Operation not found.")
# Call main
main(args)