[*] First commit
This commit is contained in:
435
tools/arch-tmpfiles
Executable file
435
tools/arch-tmpfiles
Executable file
@@ -0,0 +1,435 @@
|
||||
#!/bin/bash
|
||||
#
|
||||
# /usr/lib/initscripts/arch-tmpfiles
|
||||
#
|
||||
# Control creation, deletion, and cleaning of volatile and temporary files
|
||||
#
|
||||
|
||||
warninvalid() {
|
||||
local description=$1 file=${2:-${files[$TOTALNUM]}} linenum=${3:-${linenums[$TOTALNUM]}}
|
||||
|
||||
printf "%s:line %d: ignoring invalid entry: %s\n" "$file" "$linenum" "$description"
|
||||
(( ++error ))
|
||||
} >&2
|
||||
|
||||
checkparams() {
|
||||
shift
|
||||
local path=$1 mode=$2 uid=$3 gid=$4 age=$5
|
||||
|
||||
# mode must be valid octal and 3 or 4 digits
|
||||
if [[ $mode != '-' ]]; then
|
||||
if [[ ! $mode =~ ^[0-7]{3,4}$ ]]; then
|
||||
warninvalid "invalid mode '$mode'"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# uid must be numeric or a valid user name
|
||||
# don't try to resolve numeric IDs in case they don't exist
|
||||
if [[ $uid != '-' ]]; then
|
||||
if [[ $uid != +([0-9]) ]] && ! getent passwd "$uid" >/dev/null; then
|
||||
warninvalid "unknown user '$uid'"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# gid must be numeric or a valid group name
|
||||
# don't try to resolve numeric IDs in case they don't exist
|
||||
if [[ $gid != '-' ]]; then
|
||||
if [[ $gid != +([0-9]) ]] && ! getent group "$gid" >/dev/null; then
|
||||
warninvalid "unknown group '$gid'"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# age must be list of numerics separated by the following postfixes:
|
||||
# s, sec, m, min, h, d, w
|
||||
# also it can be prefixed by '~'
|
||||
if [[ $age != '-' ]]; then
|
||||
if [[ ! $age =~ ^~?([0-9]+(s|sec|m|min|h|d|w)?)+$ ]]; then
|
||||
warninvalid "invalid age '$age'"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
relabel() {
|
||||
local -a paths=($1)
|
||||
local mode=$2 uid=$3 gid=$4
|
||||
|
||||
for path in "${paths[@]}"; do
|
||||
if [[ -e $path ]]; then
|
||||
[[ $uid != '-' ]] && chown $CHOPTS "$uid" "$path"
|
||||
[[ $gid != '-' ]] && chgrp $CHOPTS "$gid" "$path"
|
||||
[[ $mode != '-' ]] && chmod $CHOPTS "$mode" "$path"
|
||||
fi
|
||||
done
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
parse_age() {
|
||||
local seconds=0
|
||||
local numbers=(${1//[^0-9]/ })
|
||||
local units=(${1//[0-9]/ })
|
||||
|
||||
for (( i = 0; i < ${#numbers[@]}; i++ )); do
|
||||
if [ "${units[i]}" == "m" ] || [ "${units[i]}" == "min" ]; then
|
||||
(( seconds += numbers[i] * 60 ))
|
||||
elif [ "${units[i]}" == "h" ]; then
|
||||
(( seconds += numbers[i] * 3600 ))
|
||||
elif [ "${units[i]}" == "d" ]; then
|
||||
(( seconds += numbers[i] * 86400 ))
|
||||
elif [ "${units[i]}" == "w" ]; then
|
||||
(( seconds += numbers[i] * 604800 ))
|
||||
else
|
||||
(( seconds += numbers[i] ))
|
||||
fi
|
||||
done
|
||||
|
||||
echo $seconds
|
||||
}
|
||||
|
||||
in_list() {
|
||||
local search=$1
|
||||
|
||||
for item in "${EXCLUDE_LIST[@]}"; do
|
||||
[[ "$search" == $item ]] && return 0
|
||||
done
|
||||
|
||||
return 1
|
||||
}
|
||||
|
||||
cleanup_dir() {
|
||||
local path=$1 age=$2
|
||||
local depth=1
|
||||
|
||||
# keep first level
|
||||
if [[ ${age:0:1} == '~' ]]; then
|
||||
depth=2
|
||||
age=${age#'~'}
|
||||
fi
|
||||
|
||||
local age=$(parse_age $age)
|
||||
local current_time=$(date +%s)
|
||||
|
||||
while read -d '' file; do
|
||||
# don't try to remove directories which still contains some files
|
||||
[[ -d "$file" && $(ls -A "$file") ]] && continue
|
||||
|
||||
local mod_time=$(stat -c %Y "$file")
|
||||
if (( (current_time - mod_time) > age )); then
|
||||
! in_list "$file" && rm -fd "$file"
|
||||
fi
|
||||
done < <(find -P "$path" -mindepth $depth -depth -xdev -print0)
|
||||
}
|
||||
|
||||
_f() {
|
||||
# Create a file if it doesn't exist yet
|
||||
local path=$1 mode=$2 uid=$3 gid=$4
|
||||
|
||||
if [[ ! -e $path ]]; then
|
||||
install -m"$mode" -o"$uid" -g"$gid" /dev/null "$path"
|
||||
fi
|
||||
}
|
||||
|
||||
_F() {
|
||||
# Create or truncate a file
|
||||
local path=$1 mode=$2 uid=$3 gid=$4
|
||||
|
||||
install -m"$mode" -o"$uid" -g"$gid" /dev/null "$path"
|
||||
}
|
||||
|
||||
_d() {
|
||||
# Create a directory if it doesn't exist yet
|
||||
local path=$1 mode=$2 uid=$3 gid=$4 age=$5
|
||||
|
||||
if (( CLEAN )); then
|
||||
if [[ $age != '-' ]] && [[ -d "$path" ]]; then
|
||||
cleanup_dir "$path" "$age"
|
||||
fi
|
||||
fi
|
||||
|
||||
if (( CREATE )); then
|
||||
if [[ ! -d "$path" ]]; then
|
||||
install -d -m"$mode" -o"$uid" -g"$gid" "$path"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
_D() {
|
||||
# Create or empty a directory
|
||||
local path=$1 mode=$2 uid=$3 gid=$4
|
||||
|
||||
if [[ -d $path ]] && (( REMOVE )); then
|
||||
find "$path" -mindepth 1 -maxdepth 1 -xdev -exec rm -rf {} +
|
||||
fi
|
||||
|
||||
_d "$@"
|
||||
}
|
||||
|
||||
_p() {
|
||||
# Create a named pipe (FIFO) if it doesn't exist yet
|
||||
local path=$1 mode=$2 uid=$3 gid=$4
|
||||
|
||||
if [[ ! -p "$path" ]]; then
|
||||
mkfifo -m$mode "$path"
|
||||
chown "$uid:$gid" "$path"
|
||||
fi
|
||||
}
|
||||
|
||||
_x() {
|
||||
# Ignore a path during cleaning. Use this type to exclude paths from clean-up as
|
||||
# controlled with the Age parameter. Note that lines of this type do not
|
||||
# influence the effect of r or R lines. Lines of this type accept shell-style
|
||||
# globs in place of of normal path names.
|
||||
local path=$1
|
||||
|
||||
EXCLUDE_LIST+=("$path*(/*)")
|
||||
}
|
||||
|
||||
_X() {
|
||||
# Ignore a path during cleanup. Use this type to prevent path removal as controlled
|
||||
# with the Age parameter. Note that if path is a directory, content of a directory is not
|
||||
# excluded from clean-up, only directory itself. Lines of this type accept
|
||||
# shell-style globs in place of normal path names.
|
||||
local path=$1
|
||||
|
||||
EXCLUDE_LIST+=("$path")
|
||||
}
|
||||
|
||||
_r() {
|
||||
# Remove a file or directory if it exists. This may not be used to remove
|
||||
# non-empty directories, use R for that. Lines of this type accept shell-style
|
||||
# globs in place of normal path names.
|
||||
local path
|
||||
local -a paths=($1)
|
||||
|
||||
for path in "${paths[@]}"; do
|
||||
if [[ -f $path ]]; then
|
||||
rm -f "$path"
|
||||
elif [[ -d $path ]]; then
|
||||
rmdir "$path"
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
_R() {
|
||||
# Recursively remove a path and all its subdirectories (if it is a directory).
|
||||
# Lines of this type accept shell-style globs in place of normal path names.
|
||||
local path
|
||||
local -a paths=($1)
|
||||
|
||||
for path in "${paths[@]}"; do
|
||||
[[ -d $path ]] && rm -rf --one-file-system "$path"
|
||||
done
|
||||
}
|
||||
|
||||
_z() {
|
||||
# Set ownership, access mode and relabel security context of a file or
|
||||
# directory if it exists. Lines of this type accept shell-style globs in
|
||||
# place of normal path names.
|
||||
local -a paths=($1)
|
||||
local mode=$2 uid=$3 gid=$4
|
||||
|
||||
relabel "$@"
|
||||
}
|
||||
|
||||
_Z() {
|
||||
# Recursively set ownership, access mode and relabel security context of a
|
||||
# path and all its subdirectories (if it is a directory). Lines of this type
|
||||
# accept shell-style globs in place of normal path names.
|
||||
|
||||
CHOPTS=-R relabel "$@"
|
||||
}
|
||||
|
||||
_m() {
|
||||
# If the specified file path exists, adjust its access mode, group and user to
|
||||
# the specified values. If it does not exist, do nothing.
|
||||
|
||||
relabel "$@"
|
||||
}
|
||||
|
||||
_w() {
|
||||
# Write the argument parameter to a file, if the file exists. Lines of this
|
||||
# type accept shell-style globs in place of normal path names. The argument
|
||||
# parameter will be written without a trailing newline.
|
||||
local path
|
||||
local -a paths=($1)
|
||||
local argument="$6"
|
||||
|
||||
for path in "${paths[@]}"; do
|
||||
[[ -f $path ]] && echo -n "$argument" > "$path"
|
||||
done
|
||||
}
|
||||
|
||||
_L() {
|
||||
# Create a symlink if it does not exist yet.
|
||||
local path=$1 source=$6
|
||||
|
||||
if [[ ! -e "$path" && -e "$source" ]]; then
|
||||
ln -s "$source" "$path"
|
||||
fi
|
||||
}
|
||||
|
||||
_L+() {
|
||||
# Create a symlink if it does not exist yet. If a file already exists where the symlink is to be created, it will be removed and be replaced by the symlink.
|
||||
local path=$1 source=$6
|
||||
|
||||
if [[ -e "$source" ]]; then
|
||||
ln -sf "$source" "$path"
|
||||
fi
|
||||
}
|
||||
|
||||
process_lines ()
|
||||
{
|
||||
local actions="$1"
|
||||
|
||||
TOTALNUM=0
|
||||
while read -a line; do
|
||||
(( ++TOTALNUM ))
|
||||
|
||||
[[ "${line[0]:0:1}" != $actions ]] && continue
|
||||
|
||||
# fill empty parameters
|
||||
[[ "${line[2]}" ]] || line[2]='-'
|
||||
[[ "${line[3]}" ]] || line[3]='-'
|
||||
[[ "${line[4]}" ]] || line[4]='-'
|
||||
[[ "${line[5]}" ]] || line[5]='-'
|
||||
|
||||
# skip invalid entries
|
||||
if ! checkparams "${line[@]}"; then
|
||||
continue
|
||||
fi
|
||||
|
||||
# fall back on defaults when parameters are passed as '-'
|
||||
if [[ ${line[2]} = '-' ]]; then
|
||||
case ${line[0]} in
|
||||
p|f|F) line[2]=0644 ;;
|
||||
d|D) line[2]=0755 ;;
|
||||
esac
|
||||
fi
|
||||
|
||||
if [[ "${line[0]}" = [pfFdD] ]]; then
|
||||
[[ ${line[3]} = '-' ]] && line[3]='root'
|
||||
[[ ${line[4]} = '-' ]] && line[4]='root'
|
||||
fi
|
||||
|
||||
"_${line[@]}"
|
||||
done < <(printf '%s\n' "${lines[@]}")
|
||||
}
|
||||
|
||||
shopt -s nullglob
|
||||
shopt -s extglob
|
||||
|
||||
declare -i CREATE=0 REMOVE=0 CLEAN=0 ONBOOT=0
|
||||
declare -i error=0 LINENUM=0 TOTALNUM=0
|
||||
declare FILE=
|
||||
declare -A fragments
|
||||
declare -a tmpfiles_d=(
|
||||
/usr/lib/tmpfiles.d/*.conf
|
||||
/etc/tmpfiles.d/*.conf
|
||||
/run/tmpfiles.d/*.conf
|
||||
)
|
||||
declare -a EXCLUDE_LIST lines linenums files
|
||||
|
||||
while (( $# )); do
|
||||
case $1 in
|
||||
--create) CREATE=1 ;;
|
||||
--remove) REMOVE=1 ;;
|
||||
--clean) CLEAN=1 ;;
|
||||
--boot) ONBOOT=1 ;;
|
||||
*) break ;;
|
||||
esac
|
||||
shift
|
||||
done
|
||||
|
||||
if (( !(CREATE + REMOVE + CLEAN) )); then
|
||||
printf 'usage: %s [--create] [--remove] [--clean] [--boot] [FILES...]\n' "${0##*/}"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# directories declared later in the tmpfiles_d array will override earlier
|
||||
# directories, on a per file basis.
|
||||
# Example: `/etc/tmpfiles.d/foo.conf' supersedes `/usr/lib/tmpfiles.d/foo.conf'.
|
||||
for path in "${tmpfiles_d[@]}"; do
|
||||
[[ -f $path ]] && fragments[${path##*/}]=${path%/*}
|
||||
done
|
||||
|
||||
# catch errors in functions so we can exit with something meaningful
|
||||
set -E
|
||||
trap '(( ++error ))' ERR
|
||||
|
||||
# loop through the gathered fragments, sorted globally by filename.
|
||||
# `/run/tmpfiles/foo.conf' will always be read after `/etc/tmpfiles.d/bar.conf'
|
||||
while read -d '' fragment; do
|
||||
LINENUM=0
|
||||
|
||||
# make sure that a fragment contains only a base filename
|
||||
if [[ "$fragment" = /* ]] && [[ -f "$fragment" ]]; then
|
||||
fragments[${fragment##*/}]=${fragment%/*}
|
||||
fragment=${fragment##*/}
|
||||
fi
|
||||
|
||||
if [[ -z ${fragments[$fragment]} ]]; then
|
||||
printf 'warning: %s does not found\n' "$fragment"
|
||||
continue
|
||||
fi
|
||||
|
||||
printf -v FILE '%s/%s' "${fragments[$fragment]}" "$fragment"
|
||||
|
||||
### FILE FORMAT ###
|
||||
# 0 1 2 3 4 5
|
||||
# Type Path Mode UID GID Age
|
||||
# d /run/user 0755 root root 10d
|
||||
|
||||
# omit read's -r flag to honor escapes here, so that whitespace can be
|
||||
# escaped for paths. We will _not_ honor quoted paths. Also make sure that
|
||||
# last line will be processed even if it does not contain terminating '\n'.
|
||||
while read -a line || [[ -n "${line[@]}" ]]; do
|
||||
(( ++LINENUM ))
|
||||
|
||||
# skip over comments and empty lines
|
||||
if (( ! ${#line[*]} )) || [[ ${line[0]:0:1} = '#' ]]; then
|
||||
continue
|
||||
fi
|
||||
|
||||
# process the lines with unsafe operation marker only if --boot option is
|
||||
# specified
|
||||
if [[ "${line[0]}" == *! ]]; then
|
||||
(( ONBOOT )) || continue
|
||||
|
||||
line[0]=${line[0]%!}
|
||||
fi
|
||||
|
||||
# whine about invalid entries
|
||||
if ! type -t _${line[0]} >/dev/null; then
|
||||
warninvalid "unknown action '${line[0]}'" "$FILE" "$LINENUM"
|
||||
continue
|
||||
fi
|
||||
|
||||
# path cannot be empty
|
||||
if [[ -z "${line[1]}" ]]; then
|
||||
warninvalid "missed path" "$FILE" "$LINENUM"
|
||||
continue
|
||||
fi
|
||||
|
||||
(( ++TOTALNUM ))
|
||||
lines[$TOTALNUM]="${line[@]}"
|
||||
linenums[$TOTALNUM]=$LINENUM
|
||||
files[$TOTALNUM]="$FILE"
|
||||
done <"$FILE"
|
||||
done < <(printf '%s\0' "${@:-${!fragments[@]}}" | sort -z)
|
||||
|
||||
# Fill exclude list first
|
||||
(( CLEAN )) && process_lines "[xX]"
|
||||
|
||||
process_lines "[dD]"
|
||||
(( CREATE )) && process_lines "[fFpzZmwL]"
|
||||
(( REMOVE )) && process_lines "[rR]"
|
||||
|
||||
exit $error
|
||||
|
||||
# vim: set ts=2 sw=2 noet:
|
||||
Reference in New Issue
Block a user