Merge branch 'bug-423847'

ChangeLog

@@ -5,6 +5,18 @@
 # Distributed under the GPL v2
 # $Id$
 
+  08 Jul 2012; Sebastian Pipping <sping@gentoo.org> gen_initramfs.sh,
+  genkernel:
+  Always report used kernel config file
+
+  08 Jul 2012; Sebastian Pipping <sping@gentoo.org> gen_configkernel.sh,
+  gen_initramfs.sh:
+  Catch case with no initramfs compression supported by kernel (bug #423847)
+
+  08 Jul 2012; Sebastian Pipping <sping@gentoo.org> gen_configkernel.sh,
+  gen_initramfs.sh:
+  Fix detection of initramfs compression with bzip2 as best candidate
+
   08 Jul 2012; Sebastian Pipping <sping@gentoo.org> arch/x86/modules_load,
   arch/x86_64/modules_load, defaults/modules_load:
   Add xts to MODULES_CRYPTO (bug #425028)

gen_initramfs.sh

@@ -754,6 +754,13 @@ create_initramfs() {
 	else
 		if isTrue "${COMPRESS_INITRD}"
 		then
+			if [[ "$(file --brief --mime-type "${KERNEL_CONFIG}")" == application/x-gzip ]]; then
+				# Support --kernel-config=/proc/config.gz, mainly
+				local CONFGREP=zgrep
+			else
+				local CONFGREP=grep
+			fi
+
 			cmd_xz=$(type -p xz)
 			cmd_lzma=$(type -p lzma)
 			cmd_bzip2=$(type -p bzip2)
@@ -772,17 +779,18 @@ create_initramfs() {
 					for tuple in \
 							'CONFIG_RD_XZ    cmd_xz    xz' \
 							'CONFIG_RD_LZMA  cmd_lzma  lzma' \
-							'CONFIG_RD_BZIP2 cmd_bzip2 bzip' \
+							'CONFIG_RD_BZIP2 cmd_bzip2 bzip2' \
 							'CONFIG_RD_GZIP  cmd_gzip  gzip' \
 							'CONFIG_RD_LZO   cmd_lzop  lzop'; do
 						set -- ${tuple}
 						kernel_option=$1
 						cmd_variable_name=$2
-						if grep -sq "^${kernel_option}=y" ${KERNEL_DIR}/.config && test -n "${!cmd_variable_name}" ; then
+						if ${CONFGREP} -q "^${kernel_option}=y" "${KERNEL_CONFIG}" && test -n "${!cmd_variable_name}" ; then
 							compression=$3
 							[[ ${COMPRESS_INITRD_TYPE} == best ]] && break
 						fi
 					done
+					[[ -z "${compression}" ]] && gen_die "None of the initramfs we tried are supported by your kernel (config file \"${KERNEL_CONFIG}\"), strange!?"
 					;;
 				*)
 					gen_die "Compression '${COMPRESS_INITRD_TYPE}' unknown"

genkernel

@@ -117,6 +117,7 @@ done
 # get the real arguments for usage...
 
 determine_real_args
+determine_config_file
 
 set_kernel_arch
 
@@ -129,6 +130,7 @@ check_distfiles
 dump_debugcache
 
 NORMAL=${BOLD} print_info 1 "Linux Kernel ${BOLD}${KV}${NORMAL} for ${BOLD}${ARCH}${NORMAL}..."
+print_info 1 ".. with config file ${KERNEL_CONFIG}"
 
 # Check BOOTDIR is mounted
 if ! isTrue ${CMD_INSTALL}
@@ -352,10 +354,20 @@ then
 	[ "${ZFS}" = '1' ] && print_warning 1 'add "dozfs" for ZFS volume management support'
 	[ "${ZFS}" = '1' ] && print_warning 1 'add either "real_root=ZFS" (bootfs autodetection) or "real_root=ZFS=<dataset>" to boot from a ZFS dataset'
 	[ "${ISCSI}" = '1' ] && print_warning 1 'add at least "iscsi_initiatorname=<initiator name> iscsi_target=<target name> and iscsi_address=<target ip>" for iscsi support'
-	if [ `grep 'CONFIG_EXT[0-9]_FS=' "${KERNEL_DIR}"/.config | wc -l` -ge 2 ]; then
+
-		print_warning 1 'With support for several ext* filesystems around it may be needed to'
+	if [[ "$(file --brief --mime-type "${KERNEL_CONFIG}")" == application/x-gzip ]]; then
-		print_warning 1 'add "rootfstype=ext3" or "rootfstype=ext4"'
+		# Support --kernel-config=/proc/config.gz, mainly
+		CONFGREP=zgrep
+	else
+		CONFGREP=grep
 	fi
+
+	if [ `${CONFGREP} 'CONFIG_EXT[0-9]_FS=' "${KERNEL_CONFIG}" | wc -l` -ge 2 ]; then
+		print_warning 1 'With support for several ext* filesystems available, it may be needed to'
+		print_warning 1 'add "rootfstype=ext3" or "rootfstype=ext4" to the list of boot parameters.'
+	fi
+
+	unset CONFGREP
 fi
 
 [ "${BOOTRW}" != '' ] && mount -o remount,ro ${BOOTDIR}