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dracut-functions.sh: make use of findmnt
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@ -319,44 +319,79 @@ get_maj_min() {
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# $ find_block_device /usr
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# 8:4
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find_block_device() {
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local _x _mpt _majmin _dev _fs _maj _min _find_mpt
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local _majmin _dev _majmin _find_mpt
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_find_mpt="$1"
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if [[ $use_fstab != yes ]]; then
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while read _x; do
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set -- $_x
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_majmin="$3"
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_mpt="$5"
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[[ $8 = "-" ]] && shift
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_fs="$8"
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_dev="$9"
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[[ $_mpt = $_find_mpt ]] || continue
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[[ $_fs = nfs ]] && { echo $_dev; return 0;}
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[[ $_fs = nfs3 ]] && { echo $_dev; return 0;}
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[[ $_fs = nfs4 ]] && { echo $_dev; return 0;}
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[[ $_fs = btrfs ]] && {
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get_maj_min $_dev
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return 0;
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}
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if [[ ${_majmin#0:} = $_majmin ]]; then
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echo $_majmin
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return 0 # we have a winner!
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[[ -d $_find_mpt/. ]]
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while read _majmin _dev; do
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if [[ -b $_dev ]]; then
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if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then
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read _majmin < <(get_maj_min $_dev)
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fi
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if [[ $_majmin ]]; then
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echo $_majmin
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else
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echo $_dev
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fi
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return 0
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fi
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done < /proc/self/mountinfo
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if [[ $_dev = *:* ]]; then
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echo $_dev
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return 0
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fi
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done < <(findmnt -e -v -n -o 'MAJ:MIN,SOURCE' "$_find_mpt")
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fi
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# fall back to /etc/fstab
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while read _dev _mpt _fs _x; do
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[ "${_dev%%#*}" != "$_dev" ] && continue
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if [[ $_mpt = $_find_mpt ]]; then
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[[ $_fs = nfs ]] && { echo $_dev; return 0;}
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[[ $_fs = nfs3 ]] && { echo $_dev; return 0;}
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[[ $_fs = nfs4 ]] && { echo $_dev; return 0;}
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[[ $_dev != ${_dev#UUID=} ]] && _dev=/dev/disk/by-uuid/${_dev#UUID=}
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[[ $_dev != ${_dev#LABEL=} ]] && _dev=/dev/disk/by-label/${_dev#LABEL=}
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[[ -b $_dev ]] || return 1 # oops, not a block device.
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get_maj_min "$_dev" && return 0
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while read _majmin _dev; do
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if ! [[ $_dev ]]; then
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_dev="$_majmin"
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unset _majmin
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fi
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done < /etc/fstab
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if [[ -b $_dev ]]; then
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[[ $_majmin ]] || read _majmin < <(get_maj_min $_dev)
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if [[ $_majmin ]]; then
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echo $_majmin
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else
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echo $_dev
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fi
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return 0
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fi
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if [[ $_dev = *:* ]]; then
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echo $_dev
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return 0
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fi
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done < <(findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' "$_find_mpt")
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return 1
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}
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# find_mp_fstype <mountpoint>
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# Echo the filesystem type for a given mountpoint.
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# /proc/self/mountinfo is taken as the primary source of information
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# and /etc/fstab is used as a fallback.
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# No newline is appended!
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# Example:
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# $ find_mp_fstype /;echo
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# ext4
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find_mp_fstype() {
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local _fs
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if [[ $use_fstab != yes ]]; then
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while read _fs; do
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[[ $_fs ]] || continue
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[[ $_fs = "autofs" ]] && continue
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echo -n $_fs
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return 0
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done < <(findmnt -e -v -n -o 'FSTYPE' "$1")
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fi
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while read _fs; do
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[[ $_fs ]] || continue
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[[ $_fs = "autofs" ]] && continue
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echo -n $_fs
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return 0
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done < <(findmnt --fstab -e -v -n -o 'FSTYPE' "$1")
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return 1
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}
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@ -372,78 +407,8 @@ find_block_device() {
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find_dev_fstype() {
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local _x _mpt _majmin _dev _fs _maj _min _find_dev
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_find_dev="$1"
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strstr "$_find_dev" "/dev" || _find_dev="/dev/block/$_find_dev"
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while read _x; do
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set -- $_x
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_majmin="$3"
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_mpt="$5"
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[[ $8 = "-" ]] && shift
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_fs="$8"
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_dev="$9"
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strstr "$_dev" "/dev" || continue
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[[ $_dev -ef $_find_dev ]] || continue
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[[ $_fs = "autofs" ]] && continue
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echo -n $_fs;
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return 0;
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done < /proc/self/mountinfo
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# fall back to /etc/fstab
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while read _dev _mpt _fs _x; do
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[ "${_dev%%#*}" != "$_dev" ] && continue
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case "$_dev" in
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LABEL=*)
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_dev="$(echo $_dev | sed 's,/,\\x2f,g')"
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_dev="/dev/disk/by-label/${_dev#LABEL=}"
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;;
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UUID=*)
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_dev="/dev/disk/by-uuid/${_dev#UUID=}"
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;;
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PARTUUID=*)
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_dev="/dev/disk/by-partuuid/${_dev#PARTUUID=}"
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;;
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esac
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[[ $_dev -ef $_find_dev ]] || continue
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echo -n $_fs;
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return 0;
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done < /etc/fstab
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return 1
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}
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# find_mp_fstype <mountpoint>
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# Echo the filesystem type for a given mountpoint.
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# /proc/self/mountinfo is taken as the primary source of information
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# and /etc/fstab is used as a fallback.
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# No newline is appended!
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# Example:
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# $ find_mp_fstype /;echo
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# ext4
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find_mp_fstype() {
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local _x _mpt _majmin _dev _fs _maj _min _find_mpt
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_find_mpt="$1"
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while read _x; do
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set -- $_x
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_majmin="$3"
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_mpt="$5"
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[[ $8 = "-" ]] && shift
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_fs="$8"
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_dev="$9"
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[[ $_mpt = $_find_mpt ]] || continue
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[[ $_fs = "autofs" ]] && continue
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echo -n $_fs;
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return 0;
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done < /proc/self/mountinfo
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# fall back to /etc/fstab
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while read _dev _mpt _fs _x; do
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[ "${_dev%%#*}" != "$_dev" ] && continue
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[[ $_mpt = $_find_mpt ]] || continue
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echo -n $_fs;
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return 0;
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done < /etc/fstab
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return 1
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[[ "$_find_dev" = /dev* ]] || _find_dev="/dev/block/$_find_dev"
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find_mp_fstype "$_find_dev"
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}
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# finds the major:minor of the block device backing the root filesystem.
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