kdumpctl: Move get_kernel_size to kdumpctl

The function is only used in do_estimate. Move it to kdumpctl to
prevent confusion.

Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>

kdump-lib.sh

@@ -853,75 +853,3 @@ get_all_kdump_crypt_dev()
 		get_luks_crypt_dev "$(kdump_get_maj_min "$_dev")"
 	done
 }
-
-check_vmlinux()
-{
-	# Use readelf to check if it's a valid ELF
-	readelf -h "$1" &> /dev/null || return 1
-}
-
-get_vmlinux_size()
-{
-	local size=0 _msize
-
-	while read -r _msize; do
-		size=$((size + _msize))
-	done <<< "$(readelf -l -W "$1" | awk '/^  LOAD/{print $6}' 2> /dev/stderr)"
-
-	echo $size
-}
-
-try_decompress()
-{
-	# The obscure use of the "tr" filter is to work around older versions of
-	# "grep" that report the byte offset of the line instead of the pattern.
-
-	# Try to find the header ($1) and decompress from here
-	for pos in $(tr "$1\n$2" "\n$2=" < "$4" | grep -abo "^$2"); do
-		if ! type -P "$3" > /dev/null; then
-			ddebug "Signiature detected but '$3' is missing, skip this decompressor"
-			break
-		fi
-
-		pos=${pos%%:*}
-		tail "-c+$pos" "$img" | $3 > "$5" 2> /dev/null
-		if check_vmlinux "$5"; then
-			ddebug "Kernel is extracted with '$3'"
-			return 0
-		fi
-	done
-
-	return 1
-}
-
-# Borrowed from linux/scripts/extract-vmlinux
-get_kernel_size()
-{
-	# Prepare temp files:
-	local tmp img=$1
-
-	tmp=$(mktemp /tmp/vmlinux-XXX)
-	trap 'rm -f "$tmp"' 0
-
-	# Try to check if it's a vmlinux already
-	check_vmlinux "$img" && get_vmlinux_size "$img" && return 0
-
-	# That didn't work, so retry after decompression.
-	try_decompress '\037\213\010' xy gunzip "$img" "$tmp" ||
-		try_decompress '\3757zXZ\000' abcde unxz "$img" "$tmp" ||
-		try_decompress 'BZh' xy bunzip2 "$img" "$tmp" ||
-		try_decompress '\135\0\0\0' xxx unlzma "$img" "$tmp" ||
-		try_decompress '\211\114\132' xy 'lzop -d' "$img" "$tmp" ||
-		try_decompress '\002!L\030' xxx 'lz4 -d' "$img" "$tmp" ||
-		try_decompress '(\265/\375' xxx unzstd "$img" "$tmp"
-
-	# Finally check for uncompressed images or objects:
-	[[ $? -eq 0 ]] && get_vmlinux_size "$tmp" && return 0
-
-	# Fallback to use iomem
-	local _size=0 _seg
-	while read -r _seg; do
-		_size=$((_size + 0x${_seg#*-} - 0x${_seg%-*}))
-	done <<< "$(grep -E "Kernel (code|rodata|data|bss)" /proc/iomem | cut -d ":" -f 1)"
-	echo $_size
-}

kdumpctl

@@ -1147,6 +1147,78 @@ rebuild()
 	rebuild_initrd
 }
 
+check_vmlinux()
+{
+	# Use readelf to check if it's a valid ELF
+	readelf -h "$1" &> /dev/null || return 1
+}
+
+get_vmlinux_size()
+{
+	local size=0 _msize
+
+	while read -r _msize; do
+		size=$((size + _msize))
+	done <<< "$(readelf -l -W "$1" | awk '/^  LOAD/{print $6}' 2> /dev/stderr)"
+
+	echo $size
+}
+
+try_decompress()
+{
+	# The obscure use of the "tr" filter is to work around older versions of
+	# "grep" that report the byte offset of the line instead of the pattern.
+
+	# Try to find the header ($1) and decompress from here
+	for pos in $(tr "$1\n$2" "\n$2=" < "$4" | grep -abo "^$2"); do
+		if ! type -P "$3" > /dev/null; then
+			ddebug "Signiature detected but '$3' is missing, skip this decompressor"
+			break
+		fi
+
+		pos=${pos%%:*}
+		tail "-c+$pos" "$img" | $3 > "$5" 2> /dev/null
+		if check_vmlinux "$5"; then
+			ddebug "Kernel is extracted with '$3'"
+			return 0
+		fi
+	done
+
+	return 1
+}
+
+# Borrowed from linux/scripts/extract-vmlinux
+get_kernel_size()
+{
+	# Prepare temp files:
+	local tmp img=$1
+
+	tmp=$(mktemp /tmp/vmlinux-XXX)
+	trap 'rm -f "$tmp"' 0
+
+	# Try to check if it's a vmlinux already
+	check_vmlinux "$img" && get_vmlinux_size "$img" && return 0
+
+	# That didn't work, so retry after decompression.
+	try_decompress '\037\213\010' xy gunzip "$img" "$tmp" ||
+		try_decompress '\3757zXZ\000' abcde unxz "$img" "$tmp" ||
+		try_decompress 'BZh' xy bunzip2 "$img" "$tmp" ||
+		try_decompress '\135\0\0\0' xxx unlzma "$img" "$tmp" ||
+		try_decompress '\211\114\132' xy 'lzop -d' "$img" "$tmp" ||
+		try_decompress '\002!L\030' xxx 'lz4 -d' "$img" "$tmp" ||
+		try_decompress '(\265/\375' xxx unzstd "$img" "$tmp"
+
+	# Finally check for uncompressed images or objects:
+	[[ $? -eq 0 ]] && get_vmlinux_size "$tmp" && return 0
+
+	# Fallback to use iomem
+	local _size=0 _seg
+	while read -r _seg; do
+		_size=$((_size + 0x${_seg#*-} - 0x${_seg%-*}))
+	done <<< "$(grep -E "Kernel (code|rodata|data|bss)" /proc/iomem | cut -d ":" -f 1)"
+	echo $_size
+}
+
 do_estimate()
 {
 	local kdump_mods