/usr/lib/dracut/modules.d/95rootfs-block/mount-root.sh is in dracut-core 047-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | #!/bin/sh
type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
type det_fs >/dev/null 2>&1 || . /lib/fs-lib.sh
mount_root() {
local _ret
local _rflags_ro
# sanity - determine/fix fstype
rootfs=$(det_fs "${root#block:}" "$fstype")
journaldev=$(getarg "root.journaldev=")
if [ -n "$journaldev" ]; then
case "$rootfs" in
xfs)
rflags="${rflags:+${rflags},}logdev=$journaldev"
;;
reiserfs)
fsckoptions="-j $journaldev $fsckoptions"
rflags="${rflags:+${rflags},}jdev=$journaldev"
;;
*);;
esac
fi
_rflags_ro="$rflags,ro"
_rflags_ro="${_rflags_ro##,}"
while ! mount -t ${rootfs} -o "$_rflags_ro" "${root#block:}" "$NEWROOT"; do
warn "Failed to mount -t ${rootfs} -o $_rflags_ro ${root#block:} $NEWROOT"
fsck_ask_err
done
READONLY=
fsckoptions=
if [ -f "$NEWROOT"/etc/sysconfig/readonly-root ]; then
. "$NEWROOT"/etc/sysconfig/readonly-root
fi
if getargbool 0 "readonlyroot=" -y readonlyroot; then
READONLY=yes
fi
if getarg noreadonlyroot ; then
READONLY=no
fi
if [ -f "$NEWROOT"/fastboot ] || getargbool 0 fastboot ; then
fastboot=yes
fi
if ! getargbool 0 rd.skipfsck; then
if [ -f "$NEWROOT"/fsckoptions ]; then
fsckoptions=$(cat "$NEWROOT"/fsckoptions)
fi
if [ -f "$NEWROOT"/forcefsck ] || getargbool 0 forcefsck ; then
fsckoptions="-f $fsckoptions"
elif [ -f "$NEWROOT"/.autofsck ]; then
[ -f "$NEWROOT"/etc/sysconfig/autofsck ] && \
. "$NEWROOT"/etc/sysconfig/autofsck
if [ "$AUTOFSCK_DEF_CHECK" = "yes" ]; then
AUTOFSCK_OPT="$AUTOFSCK_OPT -f"
fi
if [ -n "$AUTOFSCK_SINGLEUSER" ]; then
warn "*** Warning -- the system did not shut down cleanly. "
warn "*** Dropping you to a shell; the system will continue"
warn "*** when you leave the shell."
emergency_shell
fi
fsckoptions="$AUTOFSCK_OPT $fsckoptions"
fi
fi
rootopts=
if getargbool 1 rd.fstab -d -n rd_NO_FSTAB \
&& ! getarg rootflags \
&& [ -f "$NEWROOT/etc/fstab" ] \
&& ! [ -L "$NEWROOT/etc/fstab" ]; then
# if $NEWROOT/etc/fstab contains special mount options for
# the root filesystem,
# remount it with the proper options
rootopts="defaults"
while read dev mp fs opts dump fsck || [ -n "$dev" ]; do
# skip comments
[ "${dev%%#*}" != "$dev" ] && continue
if [ "$mp" = "/" ]; then
# sanity - determine/fix fstype
rootfs=$(det_fs "${root#block:}" "$fs")
rootopts=$opts
rootfsck=$fsck
break
fi
done < "$NEWROOT/etc/fstab"
fi
# we want rootflags (rflags) to take precedence so prepend rootopts to
# them
rflags="${rootopts},${rflags}"
rflags="${rflags#,}"
rflags="${rflags%,}"
# backslashes are treated as escape character in fstab
# esc_root=$(echo ${root#block:} | sed 's,\\,\\\\,g')
# printf '%s %s %s %s 1 1 \n' "$esc_root" "$NEWROOT" "$rootfs" "$rflags" >/etc/fstab
ran_fsck=0
if fsck_able "$rootfs" && \
[ "$rootfsck" != "0" -a -z "$fastboot" -a "$READONLY" != "yes" ] && \
! strstr "${rflags}" _netdev && \
! getargbool 0 rd.skipfsck; then
umount "$NEWROOT"
fsck_single "${root#block:}" "$rootfs" "$rflags" "$fsckoptions"
_ret=$?
ran_fsck=1
fi
echo "${root#block:} $NEWROOT $rootfs ${rflags:-defaults} 0 $rootfsck" >> /etc/fstab
if ! ismounted "$NEWROOT"; then
info "Mounting ${root#block:} with -o ${rflags}"
mount "$NEWROOT" 2>&1 | vinfo
elif ! are_lists_eq , "$rflags" "$_rflags_ro" defaults; then
info "Remounting ${root#block:} with -o ${rflags}"
mount -o remount "$NEWROOT" 2>&1 | vinfo
fi
if ! getargbool 0 rd.skipfsck; then
[ -f "$NEWROOT"/forcefsck ] && rm -f -- "$NEWROOT"/forcefsck 2>/dev/null
[ -f "$NEWROOT"/.autofsck ] && rm -f -- "$NEWROOT"/.autofsck 2>/dev/null
fi
}
if [ -n "$root" -a -z "${root%%block:*}" ]; then
mount_root
fi
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