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List: initramfs
Subject: [PATCH 1/4] implement fs-lib, squash a few bugs that were part of det_fs/wrap_fsck
From: Michal Soltys <soltys () ziu ! info>
Date: 2011-06-02 21:22:12
Message-ID: 1307049735-2345-2-git-send-email-soltys () ziu ! info
[Download RAW message or body]
To not pollute dracut-lib.sh, all the fsck related functions were moved
to fs-lib.sh. The functions available are as follows:
- fsck_single
this will detect/verify filesystem, check if it has necessary tools and
check the filesystem respecting additional flags (if any), using
specific "driver" (or falling back to generic one). Currently
available: fsck_drv_{com,xfs,std}. 'com' is used for tools following
typical subset of options/return codes (e.g. ext, jfs), 'std' is used
for "unknown" fs and doesn't assume it can be run non-interactively.
Please see comments around the code for more info.
- fsck_batch
this will check provided list of the devices;
Both of the above functions will fake empty fstab, to make generic fsck
not complain too much (excact devices are always provided on the command
line).
"Known" filesystems currently: ext234, reiser, jfs, xfs
- det_fs
Small bug fixed - as this function is meant to be called in $(), it may
not be verbose.
Current behaviour is:
- if detection is successful, use its result
- if detection is not successful, and filesystem is provided, return
the provided one; otherwise use auto
---
modules.d/95fstab-sys/module-setup.sh | 4 +-
modules.d/95fstab-sys/mount-sys.sh | 5 +-
modules.d/95rootfs-block/module-setup.sh | 6 +-
modules.d/95rootfs-block/mount-root.sh | 20 ++-
modules.d/99base/dracut-lib.sh | 47 -------
modules.d/99fs-lib/fs-lib.sh | 207 ++++++++++++++++++++++++++++++
modules.d/99fs-lib/module-setup.sh | 22 +++
7 files changed, 250 insertions(+), 61 deletions(-)
create mode 100755 modules.d/99fs-lib/fs-lib.sh
create mode 100755 modules.d/99fs-lib/module-setup.sh
diff --git a/modules.d/95fstab-sys/module-setup.sh \
b/modules.d/95fstab-sys/module-setup.sh index 1fbd55b..c22b047 100755
--- a/modules.d/95fstab-sys/module-setup.sh
+++ b/modules.d/95fstab-sys/module-setup.sh
@@ -7,12 +7,10 @@ check() {
}
depends() {
- return 0
+ echo fs-lib
}
install() {
dracut_install /etc/fstab.sys
- dracut_install /sbin/fsck*
- type -P e2fsck >/dev/null && dracut_install e2fsck
inst_hook pre-pivot 00 "$moddir/mount-sys.sh"
}
diff --git a/modules.d/95fstab-sys/mount-sys.sh b/modules.d/95fstab-sys/mount-sys.sh
index b444071..f44351d 100755
--- a/modules.d/95fstab-sys/mount-sys.sh
+++ b/modules.d/95fstab-sys/mount-sys.sh
@@ -3,6 +3,7 @@
# ex: ts=8 sw=4 sts=4 et filetype=sh
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+type det_fs >/dev/null 2>&1 || . /lib/fs-lib.sh
fstab_mount() {
local _dev _mp _fs _opts _dump _pass _rest
@@ -15,9 +16,9 @@ fstab_mount() {
continue
fi
if [ "$_pass" -gt 0 ] && ! strstr "$_opts" _netdev; then
- wrap_fsck "$_dev"
+ fsck_single "$_dev" "$_fs"
fi
- _fs=$(det_fs "$_dev" "$_fs" /etc/fstab.sys)
+ _fs=$(det_fs "$_dev" "$_fs")
info "Mounting $_dev"
mount -v -t $_fs -o $_opts $_dev $NEWROOT/$_mp 2>&1 | vinfo
done < $1
diff --git a/modules.d/95rootfs-block/module-setup.sh \
b/modules.d/95rootfs-block/module-setup.sh index 419351b..243a174 100755
--- a/modules.d/95rootfs-block/module-setup.sh
+++ b/modules.d/95rootfs-block/module-setup.sh
@@ -2,10 +2,12 @@
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
+depends() {
+ echo fs-lib
+}
+
install() {
dracut_install umount
- dracut_install /sbin/fsck*
- type -P e2fsck >/dev/null && dracut_install e2fsck
inst_hook cmdline 95 "$moddir/parse-block.sh"
inst_hook pre-udev 30 "$moddir/block-genrules.sh"
inst_hook mount 99 "$moddir/mount-root.sh"
diff --git a/modules.d/95rootfs-block/mount-root.sh \
b/modules.d/95rootfs-block/mount-root.sh index eccc019..67763cf 100755
--- a/modules.d/95rootfs-block/mount-root.sh
+++ b/modules.d/95rootfs-block/mount-root.sh
@@ -3,6 +3,7 @@
# ex: ts=8 sw=4 sts=4 et filetype=sh
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+type det_fs >/dev/null 2>&1 || . /lib/fs-lib.sh
filter_rootopts() {
rootopts=$1
@@ -25,10 +26,10 @@ filter_rootopts() {
echo $rootopts
}
-if [ -n "$root" -a -z "${root%%block:*}" ]; then
-
+mount_root() {
+ local _ret
# sanity - determine/fix fstype
- rootfs=$(det_fs "${root#block:}" "$fstype" "cmdline")
+ rootfs=$(det_fs "${root#block:}" "$fstype")
mount -t ${rootfs} -o "$rflags",ro "${root#block:}" "$NEWROOT"
READONLY=
@@ -88,7 +89,7 @@ if [ -n "$root" -a -z "${root%%block:*}" ]; then
if [ "$mp" = "/" ]; then
# sanity - determine/fix fstype
- rootfs=$(det_fs "${root#block:}" "$fs" "$NEWROOT/etc/fstab")
+ rootfs=$(det_fs "${root#block:}" "$fs")
rootopts=$opts
break
fi
@@ -103,9 +104,10 @@ if [ -n "$root" -a -z "${root%%block:*}" ]; then
esc_root=$(echo ${root#block:} | sed 's,\\,\\\\,g')
printf '%s %s %s %s,%s 1 1 \n' "$esc_root" "$NEWROOT" "$rootfs" "$rflags" \
"$rootopts" > /etc/fstab
- if [ -x "/sbin/fsck.$rootfs" -a -z "$fastboot" -a "$READONLY" != "yes" ] && ! \
strstr "${rflags},${rootopts}" _netdev; then
- wrap_fsck "${root#block:}" "$fsckoptions"
- echo $? >/run/initramfs/root-fsck
+ if [ -z "$fastboot" -a "$READONLY" != "yes" ] && ! strstr \
"${rflags},${rootopts}" _netdev; then + fsck_single "${root#block:}" "$rootfs" \
"$fsckoptions" + _ret=$?
+ [ $_ret -ne 255 ] && echo $_ret >/run/initramfs/root-fsck
fi
info "Remounting ${root#block:} with -o ${rflags},${rootopts}"
@@ -114,4 +116,8 @@ if [ -n "$root" -a -z "${root%%block:*}" ]; then
[ -f "$NEWROOT"/forcefsck ] && rm -f "$NEWROOT"/forcefsck 2>/dev/null
[ -f "$NEWROOT"/.autofsck ] && rm -f "$NEWROOT"/.autofsck 2>/dev/null
+}
+
+if [ -n "$root" -a -z "${root%%block:*}" ]; then
+ mount_root
fi
diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
index 10025bd..e376495 100755
--- a/modules.d/99base/dracut-lib.sh
+++ b/modules.d/99base/dracut-lib.sh
@@ -515,50 +515,3 @@ foreach_uuid_until() (
return 1
)
-
-# Wrap fsck call for device _dev with additional fsck options _fsckopts return
-# fsck's return code
-wrap_fsck() {
- local _ret _out _dev="$1" _fsckopts="$2"
-
- info "Checking filesystem."
- info fsck -T $_fsckopts "$_dev"
- _out=$(fsck -T $_fsckopts "$_dev") ; _ret=$?
-
- # A return of 4 or higher means there were serious problems.
- if [ $_ret -gt 3 ]; then
- echo $_out|vwarn
- warn "fsck returned with error code $_ret"
- warn "*** An error occurred during the file system check."
- warn "*** Dropping you to a shell; the system will try"
- warn "*** to mount the filesystem, when you leave the shell."
- emergency_shell -n "(Repair filesystem)"
- else
- echo $_out|vinfo
- [ $_ret -gt 0 ] && warn "fsck returned with $_ret"
- fi
-
- return $_ret
-}
-
-# Verify supplied filesystem type, fix if it's invalid, warn user if
-# appropriate
-det_fs() {
- local _dev="$1" _fs="${2:-auto}" _inf="$3" _orig
-
- _orig="$_fs"
- _fs=$(udevadm info --query=env --name="$_dev" | \
- while read 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
- warn "Cannon detect filesystem type for device $_dev"
- elif [ "$_orig" != "auto" -a "$_fs" != "$_orig" ]; then
- warn "$_inf: detected filesystem '$_fs' instead of '$_orig' for device: \
$_dev"
- fi
- echo "$_fs"
-}
diff --git a/modules.d/99fs-lib/fs-lib.sh b/modules.d/99fs-lib/fs-lib.sh
new file mode 100755
index 0000000..e64559c
--- /dev/null
+++ b/modules.d/99fs-lib/fs-lib.sh
@@ -0,0 +1,207 @@
+#!/bin/sh
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=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
+ ;;
+ ext?)
+ type e2fsck >/dev/null 2>&1 &&
+ _drv="_drv=e2fsck fsck_drv_com" &&
+ return 0
+ ;;
+ jfs)
+ type jfs_fsck >/dev/null 2>&1 &&
+ _drv="_drv=jfs_fsck fsck_drv_com" &&
+ return 0
+ ;;
+ reiserfs)
+ type reiserfsck >/dev/null 2>&1 &&
+ _drv="_drv=reiserfsck fsck_drv_com" &&
+ return 0
+ ;;
+ *)
+ type fsck >/dev/null 2>&1 &&
+ _drv="_drv=fsck fsck_drv_std" &&
+ return 0
+ ;;
+ esac
+
+ return 1
+}
+
+# note: all drivers inherit: _drv _fop _dev
+
+fsck_drv_xfs() {
+ local _ret
+
+ # fs must be cleanly mounted (and umounted) first, before attempting any
+ # xfs tools - if this works, nothing else should be needed
+ # note, that user is always dropped into the shell, if the filesystem is
+ # not mountable or if -f flag is found among _fop
+ mkdir -p /tmp/.xfs
+
+ info "trying to mount $_dev"
+ if mount -t xfs "$_dev" "/tmp/.xfs" >/dev/null 2>&1; then
+ _ret=0
+ info "xfs: $_dev is clean"
+ umount "$_dev" >/dev/null 2>&1
+ else
+ _ret=4
+ warn "*** $_dev is unmountable"
+ fi
+ if [ $_ret -gt 0 ] || strstr "$_fop" "-f"; then
+ warn "*** Dropping you to a shell. You have"
+ warn "*** xfs_repair and xfs_check (xfs_db) available."
+ warn "*** Note that if xfs didn't mount properly, it's"
+ warn "*** probably pretty serious condition."
+ emergency_shell -n "(Repair filesystem)"
+ fi
+
+ rm -r /tmp/.xfs
+ return $_ret
+}
+
+# common code for checkers that follow usual subset of options and return codes
+fsck_drv_com() {
+ local _ret
+ local _out
+
+ if ! strstr "$_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 3 arguments - device, filesystem, 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.fslib
+ local _dev="$1"
+ local _fs="${2:-auto}"
+ local _fop="$3"
+ local _drv
+
+ [ $# -lt 2 ] && return 255
+
+ _fs=$(det_fs "$_dev" "$_fs")
+ fsck_able "$_fs" || return 255
+
+ info "Checking $_fs: $_dev"
+ export FSTAB_FILE
+ eval "$_drv" "\"$_dev\"" "\"$_fop\""
+ 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.fslib
+ local _drv=fsck
+ local _dev
+ local _ret
+ local _out
+
+ [ $# -eq 0 ] && return 255
+
+ info "Checking filesystems (fsck -M -T -a):"
+ for _dev in "$@"; do
+ info " $_dev"
+ done
+
+ _out="$(fsck -M -T "$@" -- -a)"
+ _ret=$?
+
+ export FSTAB_FILE
+ 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; 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 "$_fs"
+}
diff --git a/modules.d/99fs-lib/module-setup.sh b/modules.d/99fs-lib/module-setup.sh
new file mode 100755
index 0000000..a7d870c
--- /dev/null
+++ b/modules.d/99fs-lib/module-setup.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+check() {
+ return 0
+}
+
+depends() {
+ return 0
+}
+
+install() {
+ dracut_install -o umount mount xfs_db xfs_check xfs_repair
+ dracut_install -o e2fsck
+ dracut_install -o jfs_fsck
+ dracut_install -o reiserfsck
+ dracut_install -o /sbin/fsck*
+
+ inst "$moddir/fs-lib.sh" "/lib/fs-lib.sh"
+ touch ${initdir}/etc/fstab.fslib
+}
--
1.7.5.2
--
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