remove "< <(" syntax

bash seems to want /dev/fd in that case. dracut is sometimes called in
environments, where /proc and /dev are not mounted.

dracut-functions.sh

@@ -313,9 +313,9 @@ get_fs_env() {
 # $ get_maj_min /dev/sda2
 # 8:2
 get_maj_min() {
-    local _maj _min
-    read _maj _min < <(stat -L -c '%t %T' "$1" 2>/dev/null)
-    printf "%s" "$((0x$_maj)):$((0x$_min))"
+    local _maj _min _majmin
+    _majmin="$(stat -L -c '%t:%T' "$1" 2>/dev/null)"
+    printf "%s" "$((0x${_majmin%:*})):$((0x${_majmin#*:}))"
 }
 
 # find_block_device <mountpoint>
@@ -333,10 +333,11 @@ find_block_device() {
     _find_mpt="$1"
     if [[ $use_fstab != yes ]]; then
         [[ -d $_find_mpt/. ]]
+        findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { \
             while read _majmin _dev; do
                 if [[ -b $_dev ]]; then
                     if ! [[ $_majmin ]] || [[ $_majmin == 0:* ]]; then
-                    read _majmin < <(get_maj_min $_dev)
+                        _majmin=$(get_maj_min $_dev)
                     fi
                     if [[ $_majmin ]]; then
                         echo $_majmin
@@ -349,17 +350,18 @@ find_block_device() {
                     echo $_dev
                     return 0
                 fi
-        done < <(findmnt -e -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt")
+            done; return 1; } && return 0
     fi
     # fall back to /etc/fstab
 
+    findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt" | { \
         while read _majmin _dev; do
             if ! [[ $_dev ]]; then
                 _dev="$_majmin"
                 unset _majmin
             fi
             if [[ -b $_dev ]]; then
-            [[ $_majmin ]] || read _majmin < <(get_maj_min $_dev)
+                [[ $_majmin ]] || _majmin=$(get_maj_min $_dev)
                 if [[ $_majmin ]]; then
                     echo $_majmin
                 else
@@ -371,7 +373,7 @@ find_block_device() {
                 echo $_dev
                 return 0
             fi
-    done < <(findmnt -e --fstab -v -n -o 'MAJ:MIN,SOURCE' --target "$_find_mpt")
+        done; return 1; } && return 0
 
     return 1
 }
@@ -388,20 +390,22 @@ find_mp_fstype() {
     local _fs
 
     if [[ $use_fstab != yes ]]; then
+        findmnt -e -v -n -o 'FSTYPE' --target "$1" | { \
             while read _fs; do
                 [[ $_fs ]] || continue
                 [[ $_fs = "autofs" ]] && continue
                 echo -n $_fs
                 return 0
-        done < <(findmnt -e -v -n -o 'FSTYPE' --target "$1")
+            done; return 1; } && return 0
     fi
 
+    findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1" | { \
         while read _fs; do
             [[ $_fs ]] || continue
             [[ $_fs = "autofs" ]] && continue
             echo -n $_fs
             return 0
-    done < <(findmnt --fstab -e -v -n -o 'FSTYPE' --target "$1")
+        done; return 1; } && return 0
 
     return 1
 }
@@ -420,20 +424,22 @@ find_dev_fstype() {
     [[ "$_find_dev" = /dev* ]] || _find_dev="/dev/block/$_find_dev"
 
     if [[ $use_fstab != yes ]]; then
+        findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \
             while read _fs; do
                 [[ $_fs ]] || continue
                 [[ $_fs = "autofs" ]] && continue
                 echo -n $_fs
                 return 0
-        done < <(findmnt -e -v -n -o 'FSTYPE' --source "$_find_dev")
+            done; return 1; } && return 0
     fi
 
+    findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev" | { \
         while read _fs; do
             [[ $_fs ]] || continue
             [[ $_fs = "autofs" ]] && continue
             echo -n $_fs
             return 0
-    done < <(findmnt --fstab -e -v -n -o 'FSTYPE' --source "$_find_dev")
+        done; return 1; } && return 0
 
     return 1
 
@@ -474,12 +480,12 @@ check_block_and_slaves() {
     "$1" $2 && return
     check_vol_slaves "$@" && return 0
     if [[ -f /sys/dev/block/$2/../dev ]]; then
-        check_block_and_slaves $1 $(cat "/sys/dev/block/$2/../dev") && return 0
+        check_block_and_slaves $1 $(<"/sys/dev/block/$2/../dev") && return 0
     fi
     [[ -d /sys/dev/block/$2/slaves ]] || return 1
     for _x in /sys/dev/block/$2/slaves/*/dev; do
         [[ -f $_x ]] || continue
-        check_block_and_slaves $1 $(cat "$_x") && return 0
+        check_block_and_slaves $1 $(<"$_x") && return 0
     done
     return 1
 }
@@ -492,12 +498,12 @@ check_block_and_slaves_all() {
     fi
     check_vol_slaves "$@" && return 0
     if [[ -f /sys/dev/block/$2/../dev ]]; then
-        check_block_and_slaves_all $1 $(cat "/sys/dev/block/$2/../dev") && _ret=0
+        check_block_and_slaves_all $1 $(<"/sys/dev/block/$2/../dev") && _ret=0
     fi
     [[ -d /sys/dev/block/$2/slaves ]] || return 1
     for _x in /sys/dev/block/$2/slaves/*/dev; do
         [[ -f $_x ]] || continue
-        check_block_and_slaves_all $1 $(cat "$_x") && _ret=0
+        check_block_and_slaves_all $1 $(<"$_x") && _ret=0
     done
     return $_ret
 }
@@ -1478,7 +1484,8 @@ dracut_kernel_post() {
                 done < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep"
             fi
         ) &
-        while read a ; do _pid=$a;done < <(jobs -p)
+        _pid=$(jobs -p | while read a ; do printf ":$a";done)
+        _pid=${_pid##*:}
 
         if [[ $DRACUT_INSTALL ]]; then
             xargs -r modinfo -k $kernel -F firmware < "$DRACUT_KERNEL_LAZY_HASHDIR/lazylist.dep" \
@@ -1522,7 +1529,7 @@ dracut_kernel_post() {
     [[ $DRACUT_KERNEL_LAZY_HASHDIR ]] && rm -fr -- "$DRACUT_KERNEL_LAZY_HASHDIR"
 }
 
-module_is_host_only() { (
+module_is_host_only() {
     local _mod=$1
     _mod=${_mod##*/}
     _mod=${_mod%.ko}
@@ -1541,7 +1548,6 @@ module_is_host_only() { (
     modinfo -F filename "$_mod" &>/dev/null || return 0
 
     return 1
-    )
 }
 
 find_kernel_modules_by_path () {

dracut.sh

@@ -245,15 +245,14 @@ dropindirs_sort()
     local -a files
     local f d
 
-    readarray -t files < <(
     for d in "$@"; do
         for i in "$d/"*"$suffix"; do
             if [[ -e "$i" ]]; then
                 printf "%s\n" "${i##*/}"
             fi
         done
-        done | sort -Vu
-    )
+    done | sort -Vu | {
+        readarray -t files
 
         for f in "${files[@]}"; do
             for d in "$@"; do
@@ -264,6 +263,7 @@ dropindirs_sort()
             done
         done
     }
+}
 
 verbosity_mod_l=0
 unset kernel
@@ -907,31 +907,26 @@ if [[ $hostonly ]]; then
     fi
 fi
 
-_get_fs_type() { (
+_get_fs_type() {
     [[ $1 ]] || return
     if [[ -b /dev/block/$1 ]] && ID_FS_TYPE=$(get_fs_env "/dev/block/$1"); then
-        printf "%s\n" "$(readlink -f "/dev/block/$1")" "$ID_FS_TYPE"
+        host_fs_types["$(readlink -f "/dev/block/$1")"]="$ID_FS_TYPE"
         return 1
     fi
     if [[ -b $1 ]] && ID_FS_TYPE=$(get_fs_env "$1"); then
-        printf "%s\n" "$(readlink -f "$1")" "$ID_FS_TYPE"
+        host_fs_types["$(readlink -f "$1")"]="$ID_FS_TYPE"
         return 1
     fi
     if fstype=$(find_dev_fstype "$1"); then
-        printf "%s\n" "$1" "$fstype"
+        host_fs_types["$1"]="$fstype"
         return 1
     fi
     return 1
-) }
+}
 
-for dev in "${host_devs[@]}"; do
-    while read key; do
-        read val
-        host_fs_types["$key"]="$val"
-    done < <(
+for dev in ${host_devs[@]}; do
     _get_fs_type "$dev"
     check_block_and_slaves_all _get_fs_type "$(get_maj_min "$dev")"
-    )
 done
 
 [[ -d $udevdir ]] \