Current File : //lib/dracut/modules.d/99fs-lib/fs-lib.sh
#!/bin/sh
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
fsck_ask_reboot() {
info "note - fsck suggests reboot, if you"
info "leave shell, booting will continue normally"
emergency_shell -n "(reboot ?)"
}
fsck_ask_err() {
warn "*** An error occurred during the file system check."
warn "*** Dropping you to a shell; the system will try"
warn "*** to mount the filesystem(s), when you leave the shell."
emergency_shell -n "(Repair filesystem)"
}
# inherits: _ret _drv _out
fsck_tail() {
[ $_ret -gt 0 ] && warn "$_drv returned with $_ret"
if [ $_ret -ge 4 ]; then
[ -n "$_out" ] && echo "$_out"|vwarn
fsck_ask_err
else
[ -n "$_out" ] && echo "$_out"|vinfo
[ $_ret -ge 2 ] && fsck_ask_reboot
fi
}
# note: this function sets _drv of the caller
fsck_able() {
case "$1" in
xfs)
# {
# type xfs_db &&
# type xfs_repair &&
# type xfs_check &&
# type mount &&
# type umount
# } >/dev/null 2>&1 &&
# _drv="_drv=none fsck_drv_xfs" &&
# return 0
return 1
;;
ext?)
type e2fsck >/dev/null 2>&1 &&
_drv="fsck_drv_com e2fsck" &&
return 0
;;
f2fs)
type fsck.f2fs >/dev/null 2>&1 &&
_drv="fsck_drv_com fsck.f2fs" &&
return 0
;;
jfs)
type jfs_fsck >/dev/null 2>&1 &&
_drv="fsck_drv_com jfs_fsck" &&
return 0
;;
reiserfs)
type reiserfsck >/dev/null 2>&1 &&
_drv="fsck_drv_com reiserfsck" &&
return 0
;;
btrfs)
# type btrfsck >/dev/null 2>&1 &&
# _drv="_drv=none fsck_drv_btrfs" &&
# return 0
return 1
;;
nfs*)
# nfs can be a nop, returning success
_drv=":" &&
return 0
;;
*)
type fsck >/dev/null 2>&1 &&
_drv="fsck_drv_std fsck" &&
return 0
;;
esac
return 1
}
# note: all drivers inherit: _drv _fop _dev
fsck_drv_xfs() {
# xfs fsck is not necessary... Either it mounts or not
return 0
}
fsck_drv_btrfs() {
# btrfs fsck is not necessary... Either it mounts or not
return 0
}
# common code for checkers that follow usual subset of options and return codes
fsck_drv_com() {
local _drv="$1"
local _ret
local _out
if ! strglobin "$_fop" "-[ynap]"; then
_fop="-a ${_fop}"
fi
info "issuing $_drv $_fop $_dev"
# we enforce non-interactive run, so $() is fine
_out=$($_drv $_fop "$_dev")
_ret=$?
fsck_tail
return $_ret
}
# code for generic fsck, if the filesystem checked is "unknown" to us
fsck_drv_std() {
local _ret
local _out
unset _out
info "issuing fsck $_fop $_dev"
# note, we don't enforce -a here, thus fsck is being run (in theory)
# interactively; otherwise some tool might complain about lack of terminal
# (and using -a might not be safe)
fsck $_fop "$_dev" >/dev/console 2>&1
_ret=$?
fsck_tail
return $_ret
}
# checks single filesystem, relying on specific "driver"; we don't rely on
# automatic checking based on fstab, so empty one is passed;
# takes 4 arguments - device, filesystem, filesystem options, additional fsck options;
# first 2 arguments are mandatory (fs may be auto or "")
# returns 255 if filesystem wasn't checked at all (e.g. due to lack of
# necessary tools or insufficient options)
fsck_single() {
local FSTAB_FILE=/etc/fstab.empty
local _dev="$1"
local _fs="${2:-auto}"
local _fsopts="$3"
local _fop="$4"
local _drv
[ $# -lt 2 ] && return 255
# if UUID= marks more than one device, take only the first one
[ -e "$_dev" ] || _dev=$(devnames "$_dev"| while read line || [ -n "$line" ]; do if [ -n "$line" ]; then echo $line; break;fi;done)
[ -e "$_dev" ] || return 255
_fs=$(det_fs "$_dev" "$_fs")
fsck_able "$_fs" || return 255
info "Checking $_fs: $_dev"
export FSTAB_FILE
eval "$_drv"
return $?
}
# takes list of filesystems to check in parallel; we don't rely on automatic
# checking based on fstab, so empty one is passed
fsck_batch() {
local FSTAB_FILE=/etc/fstab.empty
local _drv=fsck
local _dev
local _ret
local _out
[ $# -eq 0 ] || ! type fsck >/dev/null 2>&1 && return 255
info "Checking filesystems (fsck -M -T -a):"
for _dev in "$@"; do
info " $_dev"
done
export FSTAB_FILE
_out="$(fsck -M -T "$@" -- -a)"
_ret=$?
fsck_tail
return $_ret
}
# verify supplied filesystem type:
# if user provided the fs and we couldn't find it, assume user is right
# if we found the fs, assume we're right
det_fs() {
local _dev="$1"
local _orig="${2:-auto}"
local _fs
_fs=$(udevadm info --query=env --name="$_dev" | \
while read line || [ -n "$line" ]; do
if str_starts $line "ID_FS_TYPE="; then
echo ${line#ID_FS_TYPE=}
break
fi
done)
_fs=${_fs:-auto}
if [ "$_fs" = "auto" ]; then
_fs="$_orig"
fi
echo "$_fs"
}
write_fs_tab() {
local _o
local _rw
local _root
local _rootfstype
local _rootflags
local _fspassno
_fspassno="0"
_root="$1"
_rootfstype="$2"
_rootflags="$3"
[ -z "$_rootfstype" ] && _rootfstype=$(getarg rootfstype=)
[ -z "$_rootflags" ] && _rootflags=$(getarg rootflags=)
[ -z "$_rootfstype" ] && _rootfstype="auto"
if [ -z "$_rootflags" ]; then
_rootflags="ro,x-initrd.mount"
else
_rootflags="ro,$_rootflags,x-initrd.mount"
fi
_rw=0
CMDLINE=$(getcmdline)
for _o in $CMDLINE; do
case $_o in
rw)
_rw=1;;
ro)
_rw=0;;
esac
done
if [ "$_rw" = "1" ]; then
_rootflags="$_rootflags,rw"
if ! getargbool 0 rd.skipfsck; then
_fspassno="1"
fi
fi
echo "$_root /sysroot $_rootfstype $_rootflags $_fspassno 0" >> /etc/fstab
if type systemctl >/dev/null 2>/dev/null; then
systemctl daemon-reload
systemctl --no-block start initrd-root-fs.target
fi
}
Mini Shell