Generate and apply config

Allows for faster configuration in known environments

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>

configure

@@ -3,23 +3,51 @@
 # Copyright(c) 2012-2019 Intel Corporation
 # SPDX-License-Identifier: BSD-3-Clause-Clear
 #
-which dirname 2>&1 > /dev/null || { echo >&2 "Eror: missing 'dirname' utility"; exit 1; }
+
-which realpath 2>&1 > /dev/null || { echo >&2 "Eror: missing 'realpath' utility"; exit 1; }
+check_util() {
+    which $1 2>&1 > /dev/null || { echo >&2 "Error: missing '$1' utility"; exit 1; }
+}
+
+check_util dirname
+check_util realpath
+check_util basename
+check_util awk
 
 SCRIPTPATH=`dirname $0`
 SCRIPTPATH=`realpath $SCRIPTPATH`
 
 CONFIG_FILES=`ls $SCRIPTPATH/configure.d/*.conf | sort`
+FILES_COUNT=`echo $CONFIG_FILES | wc -w`
 
-rm -f $SCRIPTPATH/modules/generated_defines.h
+generate_config() {
-
+    rm -f config.out
-files_count=`echo $CONFIG_FILES | wc -w`
     progress=0
-
     for file in $CONFIG_FILES; do
         progress=$((progress+1))
-	echo -ne "Configuring OpenCAS: $progress/$files_count\033[0K\r"
+        echo -ne "Generating configuration: $progress/$FILES_COUNT\033[0K\r"
-	/bin/bash $file
+        CONF="$(/bin/bash $file "check")"
+        echo "$(basename $file) $CONF" >> config.out
     done
-echo -ne "        \033[0K\r"
+    echo ""
+}
 
+generate_header() {
+    rm -f $SCRIPTPATH/modules/generated_defines.h
+    progress=0
+    for file in $CONFIG_FILES; do
+        progress=$((progress+1))
+        echo -ne "Configuring OpenCAS: $progress/$FILES_COUNT\033[0K\r"
+        CONF=$(cat config.out | awk -v file=$(basename $file) '{ if ($1 == file) print $2 }')
+        /bin/bash $file "apply" "$CONF"
+    done
+    echo ""
+}
+
+if [ -z "$1" ]; then
+    generate_config
+    CONFIG_FILE="config.out"
+else
+    CONFIG_FILE="$1"
+fi
+
+generate_header

configure.d/1_append_bio.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
     if compile_module "struct bio *b;blk_rq_append_bio(NULL, &b)" "linux/blkdev.h"
     then
-    add_define "cas_blk_rq_append_bio(rq, bounce_bio) \\
+        echo "1"
-        blk_rq_append_bio(rq, &bounce_bio)"
     else
-    add_define "cas_blk_rq_append_bio(rq, bounce_bio) \\
+        echo "2"
-        blk_rq_append_bio(rq, bounce_bio)"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+        add_define "cas_blk_rq_append_bio(rq, bounce_bio) \\
+            blk_rq_append_bio(rq, &bounce_bio)" ;;
+    "2")
+        add_define "cas_blk_rq_append_bio(rq, bounce_bio) \\
+            blk_rq_append_bio(rq, bounce_bio)" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_bdev_lookup.conf

@@ -6,12 +6,29 @@
 
 . `dirname $0`/conf_framework
 
+check() {
     if compile_module "lookup_bdev(\"some_path\")" "linux/fs.h"
     then
-    add_define "CAS_LOOKUP_BDEV(PATH) \\
+        echo "1"
-	lookup_bdev(PATH)"
     elif compile_module "lookup_bdev(\"some_path\", 0)" "linux/fs.h"
     then
-    add_define "CAS_LOOKUP_BDEV(PATH) \\
+        echo "2"
-		lookup_bdev(PATH, 0)"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+        add_define "CAS_LOOKUP_BDEV(PATH) \\
+            lookup_bdev(PATH)" ;;
+    "2")
+        add_define "CAS_LOOKUP_BDEV(PATH) \\
+            lookup_bdev(PATH, 0)" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_bio_clone.conf

@@ -6,22 +6,41 @@
 
 . `dirname $0`/conf_framework
 
+check() {
     if compile_module "bio_clone(NULL, 0)" "linux/bio.h"
     then
+        echo "1"
+    elif compile_module "bio_clone_kmalloc(NULL, 0)" "linux/bio.h"
+    then
+        echo "2"
+    elif compile_module "bio_clone_fast(NULL, 0, NULL)" "linux/bio.h"
+    then
+        echo "3"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
         add_function "static inline struct bio *cas_bio_clone(struct bio *bio, gfp_t gfp_mask)
             {
                 return bio_clone(bio, gfp_mask);
-	   }"
+            }" ;;
-elif compile_module "bio_clone_kmalloc(NULL, 0)" "linux/bio.h"
+    "2")
-then
         add_function "static inline struct bio *cas_bio_clone(struct bio *bio, gfp_t gfp_mask)
             {
                 return bio_clone_kmalloc(bio, gfp_mask);
-		}"
+            }" ;;
-elif compile_module "bio_clone_fast(NULL, 0, NULL)" "linux/bio.h"
+    "3")
-then
         add_function "static inline struct bio *cas_bio_clone(struct bio *bio, gfp_t gfp_mask)
             {
                 return bio_clone_fast(bio, gfp_mask, NULL);
-		}"
+            }" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_bio_cmpl.conf

@@ -6,26 +6,42 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct bio b;b.bi_end_io(NULL, 0)" "linux/bio.h"
 	then
-    add_define "CAS_BIO_ENDIO(BIO, BYTES_DONE, ERROR) \\
+		echo "1"
-        bio_endio(BIO, ERROR)"
-    add_define "CAS_DECLARE_BLOCK_CALLBACK(name, BIO, BYTES_DONE, ERROR) \\
-        void name##_callback(BIO, ERROR)"
-    add_define "CAS_BLOCK_CALLBACK_ERROR(BIO, ERROR) \\
-		ERROR"
 	elif compile_module "struct bio b;b.bi_end_io(NULL)" "linux/bio.h"
 	then
-    add_define "CAS_BIO_ENDIO(BIO, BYTES_DONE, ERROR) \\
+		echo "2"
-        ({ CAS_BIO_OP_STATUS(BIO) = ERROR; bio_endio(BIO); })"
+	else
-    add_define "CAS_DECLARE_BLOCK_CALLBACK(name, BIO, BYTES_DONE, ERROR) \\
+		echo "X"
-        void name##_callback(BIO)"
-    add_define "CAS_BLOCK_CALLBACK_ERROR(BIO, ERROR) \\
-		CAS_BIO_OP_STATUS(BIO)"
 	fi
+}
+
+apply() {
 	add_define "CAS_REFER_BLOCK_CALLBACK(name) \\
 				   name##_callback"
 	add_define "CAS_BLOCK_CALLBACK_INIT(BIO) \\
 			{; }"
 	add_define "CAS_BLOCK_CALLBACK_RETURN(BIO) \\
 			{ return; }"
+
+	case "$1" in
+	"1")
+		add_define "CAS_BIO_ENDIO(BIO, BYTES_DONE, ERROR) \\
+			bio_endio(BIO, ERROR)"
+		add_define "CAS_DECLARE_BLOCK_CALLBACK(name, BIO, BYTES_DONE, ERROR) \\
+			void name##_callback(BIO, ERROR)"
+		add_define "CAS_BLOCK_CALLBACK_ERROR(BIO, ERROR) \\
+			ERROR" ;;
+	"2")
+		add_define "CAS_BIO_ENDIO(BIO, BYTES_DONE, ERROR) \\
+			({ CAS_BIO_OP_STATUS(BIO) = ERROR; bio_endio(BIO); })"
+		add_define "CAS_DECLARE_BLOCK_CALLBACK(name, BIO, BYTES_DONE, ERROR) \\
+			void name##_callback(BIO)"
+		add_define "CAS_BLOCK_CALLBACK_ERROR(BIO, ERROR) \\
+			CAS_BIO_OP_STATUS(BIO)" ;;
+	esac
+}
+
+conf_run $@

configure.d/1_bio_discard.conf

@@ -5,29 +5,49 @@
 #
 
 . `dirname $0`/conf_framework
-
+check() {
 	if compile_module "bio_op(NULL)" "linux/bio.h"
 	then
+		echo "1"
+	elif compile_module "REQ_OP_MASK" "linux/blk_types.h"
+	then
+		echo "2"
+	elif compile_module "REQ_OP_DISCARD" "linux/blk_types.h"
+	then
+		echo "3"
+	elif compile_module "REQ_DISCARD" "linux/blk_types.h"
+	then
+		echo "4"
+	else
+		echo "X"
+	fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_define "CAS_IS_DISCARD(bio) \\
 			(bio_op(bio) == REQ_OP_DISCARD)"
 		add_define "CAS_BIO_DISCARD \\
-		(REQ_OP_DISCARD)"
+			(REQ_OP_DISCARD)" ;;
-elif compile_module "REQ_OP_MASK" "linux/blk_types.h"
+    "2")
-then
 		add_define "CAS_IS_DISCARD(bio) \\
 			(((CAS_BIO_OP_FLAGS(bio)) & REQ_OP_MASK) == REQ_OP_DISCARD)"
 		add_define "CAS_BIO_DISCARD \\
-		((REQ_OP_WRITE | REQ_OP_DISCARD))"
+			((REQ_OP_WRITE | REQ_OP_DISCARD))" ;;
-elif compile_module "REQ_OP_DISCARD" "linux/blk_types.h"
+    "3")
-then
 		add_define "CAS_IS_DISCARD(bio) \\
 			((CAS_BIO_OP_FLAGS(bio)) & REQ_OP_DISCARD)"
 		add_define "CAS_BIO_DISCARD \\
-		((REQ_OP_WRITE | REQ_OP_DISCARD))"
+			((REQ_OP_WRITE | REQ_OP_DISCARD))" ;;
-elif compile_module "REQ_DISCARD" "linux/blk_types.h"
+    "4")
-then
 		add_define "CAS_IS_DISCARD(bio) \\
 			((CAS_BIO_OP_FLAGS(bio)) & REQ_DISCARD)"
 		add_define "CAS_BIO_DISCARD \\
-		(REQ_WRITE | REQ_DISCARD)"
+			(REQ_WRITE | REQ_DISCARD)" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_bio_err.conf

@@ -6,12 +6,30 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct bio b;b.bi_status" "linux/bio.h"
 	then
-    add_define "CAS_BIO_OP_STATUS(bio) \\
+		echo "1"
-		bio->bi_status"
 	elif compile_module "struct bio b;b.bi_error" "linux/bio.h"
 	then
-    add_define "CAS_BIO_OP_STATUS(bio) \\
+		echo "2"
-		bio->bi_error"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_BIO_OP_STATUS(bio) \\
+			bio->bi_status" ;;
+    "2")
+		add_define "CAS_BIO_OP_STATUS(bio) \\
+			bio->bi_error" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@
+

configure.d/1_bio_flags.conf

@@ -6,14 +6,31 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct bio b;b.bi_opf" "linux/bio.h"
 	then
-    add_define "CAS_BIO_OP_FLAGS_FORMAT \"0x%016X\""
+		echo "1"
-    add_define "CAS_BIO_OP_FLAGS(bio) \\
-		(bio)->bi_opf"
 	elif compile_module "struct bio b;b.bi_rw" "linux/bio.h"
 	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_BIO_OP_FLAGS_FORMAT \"0x%016X\""
+		add_define "CAS_BIO_OP_FLAGS(bio) \\
+			(bio)->bi_opf" ;;
+    "2")
 		add_define "CAS_BIO_OP_FLAGS_FORMAT \"0x%016lX\""
 		add_define "CAS_BIO_OP_FLAGS(bio) \\
-		(bio)->bi_rw"
+			(bio)->bi_rw" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_bio_iter.conf

@@ -6,20 +6,37 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct bio b;b.bi_iter.bi_size" "linux/bio.h"
 	then
+		echo "1"
+	elif compile_module "struct bio b;b.bi_size" "linux/bio.h"
+	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_define "CAS_BIO_BISIZE(bio) \\
 			bio->bi_iter.bi_size"
 		add_define "CAS_BIO_BIIDX(bio) \\
 			bio->bi_iter.bi_idx"
 		add_define "CAS_BIO_BISECTOR(bio) \\
-		bio->bi_iter.bi_sector"
+			bio->bi_iter.bi_sector" ;;
-elif compile_module "struct bio b;b.bi_size" "linux/bio.h"
+    "2")
-then
 		add_define "CAS_BIO_BISIZE(bio) \\
 			bio->bi_size"
 		add_define "CAS_BIO_BIIDX(bio) \\
 			bio->bi_idx"
 		add_define "CAS_BIO_BISECTOR(bio) \\
-		bio->bi_sector"
+			bio->bi_sector" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_biovec.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct bio b;&bio_iovec(&b)" "linux/bio.h"
 	then
-    add_define "CAS_SEGMENT_BVEC(vec) \\
+		echo "1"
-		(&(vec))"
 	else
-    add_define "CAS_SEGMENT_BVEC(vec) \\
+		echo "2"
-		(vec)"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_SEGMENT_BVEC(vec) \\
+			(&(vec))" ;;
+    "2")
+		add_define "CAS_SEGMENT_BVEC(vec) \\
+			(vec)" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_block_pc.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "blk_rq_set_block_pc(NULL)"  "linux/blkdev.h"
 	then
-    add_define "cas_blk_rq_set_block_pc(rq) \\
+		echo "1"
-		blk_rq_set_block_pc(rq)"
 	else
-    add_define "cas_blk_rq_set_block_pc(rq) \\
+		echo "2"
-		{}"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "cas_blk_rq_set_block_pc(rq) \\
+			blk_rq_set_block_pc(rq)" ;;
+    "2")
+		add_define "cas_blk_rq_set_block_pc(rq) \\
+			{}" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_deamonize.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "deamonize(\"some_name\", NULL)" "linux/sched.h"
 	then
-    add_define "CAS_DAEMONIZE(name, arg...) \\
+		echo "1"
-		daemonize(name, ##arg)"
 	else
-    add_define "CAS_DAEMONIZE(name, arg...) \\
+		echo "2"
-		do { } while (0)"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_DAEMONIZE(name, arg...) \\
+			daemonize(name, ##arg)" ;;
+    "2")
+		add_define "CAS_DAEMONIZE(name, arg...) \\
+			do { } while (0)" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_dentry.conf

@@ -6,12 +6,29 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct dentry dentry;dentry.d_u.d_alias" "linux/dcache.h"
 	then
-    add_define "CAS_ALIAS_NODE_TO_DENTRY(alias) \\
+		echo "1"
-        container_of(alias, struct dentry, d_u.d_alias)"
 	elif compile_module "struct dentry dentry;dentry.d_alias" "linux/dcache.h"
 	then
-    add_define "CAS_ALIAS_NODE_TO_DENTRY(alias) \\
+		echo "2"
-        container_of(alias, struct dentry, d_alias)"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_ALIAS_NODE_TO_DENTRY(alias) \\
+			container_of(alias, struct dentry, d_u.d_alias)" ;;
+    "2")
+		add_define "CAS_ALIAS_NODE_TO_DENTRY(alias) \\
+			container_of(alias, struct dentry, d_alias)" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_discard_zeros.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct queue_limits q;q.discard_zeroes_data" "linux/blkdev.h"
 	then
-    add_define "CAS_SET_DISCARD_ZEROES_DATA(queue_limits, val) \\
+		echo "1"
-        queue_limits.discard_zeroes_data = val"
 	else
-    add_define "CAS_SET_DISCARD_ZEROES_DATA(queue_limits, val) \\
+        echo "2"
-		({})"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_SET_DISCARD_ZEROES_DATA(queue_limits, val) \\
+			queue_limits.discard_zeroes_data = val" ;;
+    "2")
+		add_define "CAS_SET_DISCARD_ZEROES_DATA(queue_limits, val) \\
+			({})" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_flush_flag.conf

@@ -6,16 +6,33 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "REQ_PREFLUSH" "linux/blk_types.h"
 	then
+		echo "1"
+	elif compile_module "REQ_FLUSH" "linux/blk_types.h"
+	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_define "CAS_REQ_FLUSH \\
 			REQ_PREFLUSH"
 		add_define "CAS_FLUSH_SUPPORTED \\
-		1"
+			1" ;;
-elif compile_module "REQ_FLUSH" "linux/blk_types.h"
+    "2")
-then
 		add_define "CAS_REQ_FLUSH \\
 			REQ_FLUSH"
 		add_define "CAS_FLUSH_SUPPORTED \\
-		1"
+			1" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_generic_acct.conf

@@ -6,9 +6,27 @@
 
 . `dirname $0`/conf_framework
 
-if
+check() {
-compile_module "generic_start_io_acct(NULL, 0, 0, NULL)" "linux/bio.h"
+	if compile_module "generic_start_io_acct(NULL, 0, 0, NULL)" "linux/bio.h"
 	then
+        echo "1"
+	elif compile_module "generic_start_io_acct(0, 0, NULL)" "linux/bio.h"
+	then
+        echo "2"
+	elif compile_module "part_round_stats(1, 1)" "linux/genhd.h"
+	then
+        echo "3"
+	elif compile_module "part_round_stats(NULL, 1, 1)" "linux/genhd.h"
+	then
+        echo "4"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 		static inline void cas_generic_start_io_acct(struct request_queue *q,
 			int rw, unsigned long sectors, struct hd_struct *part) {
@@ -19,9 +37,8 @@ static inline void cas_generic_end_io_acct(struct request_queue *q,
 			int rw, struct hd_struct *part, unsigned long start_time)
 		{
 			generic_end_io_acct(q, rw, part, start_time);
-}"
+		}" ;;
-elif compile_module "generic_start_io_acct(0, 0, NULL)" "linux/bio.h"
+    "2")
-then
 		add_function "
 		static inline void cas_generic_start_io_acct(struct request_queue *q,
 			int rw, unsigned long sectors, struct hd_struct *part)
@@ -33,9 +50,8 @@ static inline void cas_generic_end_io_acct(struct request_queue *q,
 			int rw, struct hd_struct *part, unsigned long start_time)
 		{
 			generic_end_io_acct(rw, part, start_time);
-}"
+		}" ;;
-elif compile_module "part_round_stats(1, 1)" "linux/genhd.h"
+	"3")
-then
 		add_function "
 		static inline void cas_generic_start_io_acct(struct request_queue *q,
 				int rw, unsigned long sectors, struct hd_struct *part)
@@ -57,9 +73,8 @@ static inline void cas_generic_end_io_acct(struct request_queue *q,
 			part_round_stats(cpu, part);
 			part_dec_in_flight(part, rw);
 			part_stat_unlock();
-}"
+		}" ;;
-elif compile_module "part_round_stats(NULL, 1, 1)" "linux/genhd.h"
+	"4")
-then
 		add_function "
 		static inline void cas_generic_start_io_acct(struct request_queue *q,
 				int rw, unsigned long sectors, struct hd_struct *part)
@@ -81,5 +96,10 @@ static inline void cas_generic_end_io_acct(struct request_queue *q,
 			part_round_stats(NULL, cpu, part);
 			part_dec_in_flight(NULL, part, rw);
 			part_stat_unlock();
-}"
+		}" ;;
-fi
+		*)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_global_page_state.conf

@@ -6,9 +6,21 @@
 
 . `dirname $0`/conf_framework
 
-
+check() {
 	if compile_module "global_zone_page_state(1)" "linux/mm.h"
 	then
+		echo "1"
+	elif compile_module "global_page_state(1)" "linux/mm.h"
+	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 	static inline unsigned long cas_global_zone_page_state(enum zone_stat_item item)
 		{
@@ -17,9 +29,8 @@ static inline unsigned long cas_global_zone_page_state(enum zone_stat_item item)
 		add_define "CAS_BIO_SET_DEV(bio, bdev) \\
 			bio_set_dev(bio, bdev)"
 		add_define "CAS_BIO_GET_DEV(bio) \\
-		bio->bi_disk"
+			bio->bi_disk" ;;
-elif compile_module "global_page_state(1)" "linux/mm.h"
+    "2")
-then
 		add_function "
 	static inline unsigned long cas_global_zone_page_state(enum zone_stat_item item)
 		{
@@ -28,5 +39,10 @@ static inline unsigned long cas_global_zone_page_state(enum zone_stat_item item)
 		add_define "CAS_BIO_SET_DEV(bio, bdev) \\
 			bio->bi_bdev = bdev"
 		add_define "CAS_BIO_GET_DEV(bio) \\
-		bio->bi_bdev->bd_disk"
+			bio->bi_bdev->bd_disk" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_hlist.conf

@@ -6,20 +6,37 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct hlist_node list" "linux/types.h"
 	then
+		echo "1"
+	elif compile_module "struct list_head list" "linux/list.h"
+	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_define "CAS_ALIAS_NODE_TYPE \\
 			struct hlist_node"
 		add_define "CAS_DENTRY_LIST_EMPTY(head) \\
 			hlist_empty(head)"
 		add_define "CAS_INODE_FOR_EACH_DENTRY(pos, head) \\
-		hlist_for_each(pos, head)"
+			hlist_for_each(pos, head)" ;;
-elif compile_module "struct list_head list" "linux/list.h"
+    "2")
-then
 		add_define "CAS_ALIAS_NODE_TYPE \\
 			struct list_head"
 		add_define "CAS_DENTRY_LIST_EMPTY(head) \\
 			list_empty(head)"
 		add_define "CAS_INODE_FOR_EACH_DENTRY(pos, head) \\
-		list_for_each(pos, head)"
+			list_for_each(pos, head)" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_inode.conf

@@ -6,12 +6,29 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct file file;file.f_inode" "linux/fs.h"
 	then
-	add_define "CAS_FILE_INODE(file) \\
+		echo "1"
-		file->f_inode"
 	elif compile_module "struct file file;file->f_dentry->d_inode" "linux/fs.h"
 	then
-	add_define "CAS_FILE_INODE(file) \\
+		echo "2"
-		file->f_dentry->d_inode"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_FILE_INODE(file) \\
+			file->f_inode" ;;
+    "2")
+		add_define "CAS_FILE_INODE(file) \\
+			file->f_dentry->d_inode" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_munmap.conf

@@ -6,8 +6,21 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "vm_munmap(0, 0)" "linux/mm.h"
 	then
+		echo "1"
+	elif compile_module "do_munmap(NULL, 0)" "linux/mm.h"
+	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 #include <uapi/asm-generic/mman-common.h>
 	static inline unsigned long cas_vm_mmap(struct file *file,
@@ -20,9 +33,8 @@ static inline unsigned long cas_vm_mmap(struct file *file,
 	static inline int cas_vm_munmap(unsigned long start, size_t len)
 	{
 		return vm_munmap(start, len);
-}"
+	}" ;;
-elif compile_module "do_munmap(NULL, 0)" "linux/mm.h"
+    "2")
-then
 		add_function "
 #include <asm-generic/mman-common.h>
 	static inline unsigned long cas_vm_mmap(struct file *file,
@@ -35,5 +47,10 @@ static inline unsigned long cas_vm_mmap(struct file *file,
 	static inline int cas_vm_munmap(unsigned long start, size_t len)
 	{
 		return do_munmap(current->mm, start, len);
-}"
+	}" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_queue_bounce.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "blk_queue_bounce(NULL, NULL);" "linux/blkdev.h"
 	then
-    add_define "cas_blk_queue_bounce(q, bounce_bio) \\
+		echo "1"
-        blk_queue_bounce(q, bounce_bio)"
 	else
-    add_define "cas_blk_queue_bounce(q, bounce_bio) \\
+        echo "2"
-		({})"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "cas_blk_queue_bounce(q, bounce_bio) \\
+			blk_queue_bounce(q, bounce_bio)" ;;
+    "2")
+		add_define "cas_blk_queue_bounce(q, bounce_bio) \\
+			({})" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_queue_chunk_sectors.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct request_queue q;q.limits.chunk_sectors" "linux/blkdev.h"
 	then
-    add_define "CAS_SET_QUEUE_CHUNK_SECTORS(queue, chunk_size) \\
+		echo "1"
-        queue->limits.chunk_sectors = chunk_size"
 	else
-    add_define "CAS_SET_QUEUE_CHUNK_SECTORS(queue, chunk_size) \\
+		echo "2"
-		{;}"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_SET_QUEUE_CHUNK_SECTORS(queue, chunk_size) \\
+			queue->limits.chunk_sectors = chunk_size" ;;
+    "2")
+		add_define "CAS_SET_QUEUE_CHUNK_SECTORS(queue, chunk_size) \\
+			{;}" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_queue_flag_set.conf

@@ -6,11 +6,26 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "blk_queue_flag_set(0, NULL)" "linux/blkdev.h"
 	then
-    add_define "cas_queue_flag_set_unlocked(flag, request_queue) \\
+        echo "1"
-        blk_queue_flag_set(flag, request_queue)"
 	else
-    add_define "cas_queue_flag_set_unlocked(flag, request_queue) \\
+        echo "2"
-        queue_flag_set_unlocked(flag, request_queue)"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "cas_queue_flag_set_unlocked(flag, request_queue) \\
+			blk_queue_flag_set(flag, request_queue)" ;;
+    "2")
+		add_define "cas_queue_flag_set_unlocked(flag, request_queue) \\
+			queue_flag_set_unlocked(flag, request_queue)" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_queue_limits.conf

@@ -7,8 +7,24 @@
 . `dirname $0`/conf_framework
 
 # RHEL 7.3
+check() {
 	if compile_module "struct queue_limits q;q.limits_aux" "linux/blkdev.h"
 	then
+		echo "1"
+	elif compile_module "struct queue_limits q;q.max_write_zeroes_sectors" "linux/blkdev.h"
+	then
+		echo "2"
+	elif compile_module "struct queue_limits q;q.max_write_same_sectors" "linux/blkdev.h"
+	then
+		echo "3"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 	static inline void cas_copy_queue_limits(struct request_queue *exp_q,
 			struct request_queue *cache_q, struct request_queue *core_q)
@@ -24,9 +40,8 @@ static inline void cas_copy_queue_limits(struct request_queue *exp_q,
 		exp_q->limits.max_write_same_sectors = 0;
 		if (queue_virt_boundary(cache_q))
 			queue_flag_set(QUEUE_FLAG_NOMERGES, cache_q);
-}"
+	}" ;;
-elif compile_module "struct queue_limits q;q.max_write_zeroes_sectors" "linux/blkdev.h"
+    "2")
-then
 		add_function "
 	static inline void cas_copy_queue_limits(struct request_queue *exp_q,
 			struct request_queue *cache_q, struct request_queue *core_q)
@@ -37,9 +52,8 @@ static inline void cas_copy_queue_limits(struct request_queue *exp_q,
 		exp_q->limits.max_segments = core_q->limits.max_segments;
 		exp_q->limits.max_write_same_sectors = 0;
 		exp_q->limits.max_write_zeroes_sectors = 0;
-}"
+	}" ;;
-elif compile_module "struct queue_limits q;q.max_write_same_sectors" "linux/blkdev.h"
+	"3")
-then
 		add_function "
 	static inline void cas_copy_queue_limits(struct request_queue *exp_q,
 			struct request_queue *cache_q, struct request_queue *core_q)
@@ -49,5 +63,10 @@ static inline void cas_copy_queue_limits(struct request_queue *exp_q,
 		exp_q->limits.max_hw_sectors = core_q->limits.max_hw_sectors;
 		exp_q->limits.max_segments = core_q->limits.max_segments;
 		exp_q->limits.max_write_same_sectors = 0;
-}"
+	}" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_req_fs.conf

@@ -6,14 +6,24 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "REQ_TYPE_FS" "linux/blkdev.h"
 	then
+		echo "1"
+	else
+		echo "2"
+	fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 	static inline int cas_is_rq_type_fs(struct request *rq)
 	{
 		return rq->cmd_type == REQ_TYPE_FS;
-}"
+	}" ;;
-else
+    "2")
 		add_function "
 	static inline int cas_is_rq_type_fs(struct request *rq)
 	{
@@ -26,5 +36,10 @@ static inline int cas_is_rq_type_fs(struct request *rq)
 		default:
 			return false;
 		}
-}"
+	}" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_submit_bio.conf

@@ -11,34 +11,55 @@
 #   * it takes one argument and retuns non-void
 #   * it takes two arguments and returns non-void
 #   * it takse two arguments and is void-type
+check() {
 	if compile_module "submit_bio(NULL)" "linux/bio.h"
 	then
-    add_function "
+        echo "1"
-static inline blk_qc_t cas_submit_bio(int rw, struct bio *bio)
-{
-	CAS_BIO_OP_FLAGS(bio) |= rw;
-    return submit_bio(bio);
-}"
 	elif compile_module "submit_bio(NULL)" "linux/fs.h"
 	then
+        echo "2"
+	elif compile_module "void *t=submit_bio(0, NULL)" "linux/fs.h"
+	then
+        echo "3"
+	elif compile_module "submit_bio(0, NULL)" "linux/fs.h"
+	then
+        echo "4"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 	static inline blk_qc_t cas_submit_bio(int rw, struct bio *bio)
 	{
 		CAS_BIO_OP_FLAGS(bio) |= rw;
 		return submit_bio(bio);
-}"
+	}" ;;
-elif compile_module "void *t=submit_bio(0, NULL)" "linux/fs.h"
+    "2")
-then
+		add_function "
+	static inline blk_qc_t cas_submit_bio(int rw, struct bio *bio)
+	{
+		CAS_BIO_OP_FLAGS(bio) |= rw;
+		return submit_bio(bio);
+	}" ;;
+    "3")
 		add_function "
 	static inline blk_qc_t cas_submit_bio(int rw, struct bio *bio)
 	{
 		return submit_bio(rw, bio);
-}"
+	}" ;;
-elif compile_module "submit_bio(0, NULL)" "linux/fs.h"
+    "4")
-then
 		add_function "
 	static inline void cas_submit_bio(int rw, struct bio *bio)
 	{
 			submit_bio(rw, bio);
-}"
+	}" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_whlt.conf

@@ -6,8 +6,21 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "struct bio b;b.bi_write_hint" "linux/bio.h"
 	then
-    add_define "CAS_WLTH_SUPPORT \\
+		echo "1"
-		1"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_WLTH_SUPPORT \\
+			1" ;;
+    esac
+}
+
+conf_run $@

configure.d/1_write_flag.conf

@@ -6,12 +6,29 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "WRITE" "linux/blk_types.h"
 	then
-    add_define "CAS_RQ_DATA_DIR_WR \\
+        echo "1"
-		WRITE"
 	elif compile_module "REQ_WRITE" "linux/blk_types.h"
 	then
-    add_define "CAS_RQ_DATA_DIR_WR \\
+        echo "2"
-		REQ_WRITE"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_RQ_DATA_DIR_WR \\
+			WRITE" ;;
+    "2")
+		add_define "CAS_RQ_DATA_DIR_WR \\
+			REQ_WRITE" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/1_write_fua.conf

@@ -6,27 +6,48 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "WRITE_FUA" "linux/fs.h"
 	then
-    add_define "CAS_WRITE_FUA \\
-		WRITE_FUA"
 		if compile_module "BIO_FUA" "linux/bio.h"
 		then
-        add_define "CAS_IS_WRITE_FUA(flags) \\
+			echo "1"
-			((flags) & BIO_FUA)"
 		else
-        add_define "CAS_IS_WRITE_FUA(flags) \\
+			echo "2"
-			((flags) & REQ_FUA)"
 		fi
 	elif compile_module "REQ_FUA" "linux/blk_types.h"
 	then
+		echo "3"
+	else
+		echo "4"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_WRITE_FUA \\
+			WRITE_FUA"
+		add_define "CAS_IS_WRITE_FUA(flags) \\
+			((flags) & BIO_FUA)" ;;
+    "2")
+		add_define "CAS_WRITE_FUA \\
+			WRITE_FUA"
+		add_define "CAS_IS_WRITE_FUA(flags) \\
+			((flags) & REQ_FUA)" ;;
+	"3")
 		add_define "CAS_IS_WRITE_FUA(flags) \\
 			((flags) & REQ_FUA)"
 		add_define "CAS_WRITE_FUA \\
-		REQ_FUA"
+			REQ_FUA" ;;
-else
+	"4")
 		add_define "CAS_IS_WRITE_FUA(flags) \\
 			0"
 		add_define "CAS_WRITE_FUA \\
-		WRITE_BARRIER"
+			WRITE_BARRIER" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/2_bio_barrier.conf

@@ -6,16 +6,35 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "RQF_SOFTBARRIER" "linux/blkdev.h"
 	then
-    add_define "CAS_CHECK_BARRIER(bio) \\
+        echo "1"
-        ((CAS_BIO_OP_FLAGS(bio) & RQF_SOFTBARRIER) != 0)"
 	elif compile_module "REQ_SOFTBARRIER" "linux/blk_types.h"
 	then
-    add_define "CAS_CHECK_BARRIER(bio) \\
+        echo "2"
-        ((CAS_BIO_OP_FLAGS(bio) & REQ_SOFTBARRIER) != 0)"
 	elif compile_module "BIO_RW_BARRIER" "linux/fs.h"
 	then
-    add_define "CAS_CHECK_BARRIER(bio) \\
+        echo "3"
-		(bio_rw_flagged((bio), BIO_RW_BARRIER))"
+    else
+        echo "X"
     fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_CHECK_BARRIER(bio) \\
+			((CAS_BIO_OP_FLAGS(bio) & RQF_SOFTBARRIER) != 0)" ;;
+    "2")
+		add_define "CAS_CHECK_BARRIER(bio) \\
+			((CAS_BIO_OP_FLAGS(bio) & REQ_SOFTBARRIER) != 0)" ;;
+	"3")
+		add_define "CAS_CHECK_BARRIER(bio) \\
+			(bio_rw_flagged((bio), BIO_RW_BARRIER))" ;;
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/2_flush_fua.conf

@@ -6,27 +6,48 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "WRITE_FLUSH_FUA" "linux/fs.h"
 	then
-    add_define "CAS_WRITE_FLUSH_FUA \\
-		WRITE_FLUSH_FUA"
 		if compile_module "BIO_FUA" "linux/bio.h"
 		then
-        add_define "CAS_IS_WRITE_FLUSH_FUA(flags) \\
+			echo "1"
-            ((BIO_FUA | BIO_FLUSH) == ((flags) & (BIO_FUA | BIO_FLUSH)))"
 		else
-        add_define "CAS_IS_WRITE_FLUSH_FUA(flags) \\
+			echo "2"
-            ((REQ_FUA | CAS_REQ_FLUSH) == ((flags) & (REQ_FUA | CAS_REQ_FLUSH)))"
 		fi
 	elif compile_module "REQ_PREFLUSH" "linux/blk_types.h"
 	then
+		echo "3"
+	else
+		echo "4"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
+		add_define "CAS_WRITE_FLUSH_FUA \\
+			WRITE_FLUSH_FUA"
+		add_define "CAS_IS_WRITE_FLUSH_FUA(flags) \\
+			((BIO_FUA | BIO_FLUSH) == ((flags) & (BIO_FUA | BIO_FLUSH)))" ;;
+    "2")
+		add_define "CAS_WRITE_FLUSH_FUA \\
+			WRITE_FLUSH_FUA"
+		add_define "CAS_IS_WRITE_FLUSH_FUA(flags) \\
+			((REQ_FUA | CAS_REQ_FLUSH) == ((flags) & (REQ_FUA | CAS_REQ_FLUSH)))" ;;
+	"3")
 		add_define "CAS_IS_WRITE_FLUSH_FUA(flags) \\
 			((REQ_PREFLUSH | REQ_FUA) == ((flags) & (REQ_PREFLUSH |REQ_FUA)))"
 		add_define "CAS_WRITE_FLUSH_FUA \\
-		(REQ_PREFLUSH | REQ_FUA)"
+			(REQ_PREFLUSH | REQ_FUA)" ;;
-else
+	"4")
 		add_define "CAS_IS_WRITE_FLUSH_FUA(flags) \\
 			0"
 		add_define "CAS_WRITE_FLUSH_FUA \\
-		WRITE_BARRIER"
+			WRITE_BARRIER" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/2_make_req.conf

@@ -6,15 +6,25 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "blk_make_request(NULL, NULL, 0)" "linux/blkdev.h"
 	then
+        echo "1"
+    else
+        echo "2"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_function "
 	static inline struct request *cas_blk_make_request(struct request_queue *q,
 			struct bio *bio, gfp_t gfp_mask)
 	{
 		return blk_make_request(q, bio, gfp_mask);
-}"
+	}" ;;
-else
+    "2")
 		add_function "
 	static inline struct request *cas_blk_make_request(struct request_queue *q,
 		struct bio *bio, gfp_t gfp_mask)
@@ -35,5 +45,10 @@ static inline struct request *cas_blk_make_request(struct request_queue *q,
 			}
 		}
 		return rq;
-}"
+	}" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/2_queue_write.conf

@@ -6,8 +6,21 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "blk_queue_write_cache(NULL, 0, 0)" "linux/blkdev.h"
 	then
+		echo "1"
+	elif compile_module "struct request_queue rq;rq.flush_flags" "linux/blkdev.h"
+	then
+		echo "2"
+    else
+        echo "X"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_define "CAS_CHECK_QUEUE_FLUSH(q) \\
 			test_bit(QUEUE_FLAG_WC, &(q)->queue_flags)"
 		add_define "CAS_CHECK_QUEUE_FUA(q) \\
@@ -17,9 +30,8 @@ static inline void cas_set_queue_flush_fua(struct request_queue *q,
 			bool flush, bool fua)
 	{
 		blk_queue_write_cache(q, flush, fua);
-}"
+	}" ;;
-elif compile_module "struct request_queue rq;rq.flush_flags" "linux/blkdev.h"
+    "2")
-then
 		add_define "CAS_CHECK_QUEUE_FLUSH(q) \\
 			((q)->flush_flags & CAS_REQ_FLUSH)"
 		add_define "CAS_CHECK_QUEUE_FUA(q) \\
@@ -34,5 +46,10 @@ then
 			flags |= REQ_FUA;
 		if (flags)
 			blk_queue_flush(q, flags);
-}"
+	}" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/2_write_flush.conf

@@ -6,33 +6,56 @@
 
 . `dirname $0`/conf_framework
 
+check() {
 	if compile_module "WRITE_FLUSH" "linux/fs.h"
 	then
+		if compile_module "BIO_FLUSH" "linux/bio.h"
+		then
+			echo "1"
+		else
+			echo "2"
+		fi
+	elif compile_module "REQ_PREFLUSH" "linux/blk_types.h"
+	then
+		echo "3"
+	else
+		echo "4"
+    fi
+}
+
+apply() {
+    case "$1" in
+    "1")
 		add_define "CAS_RQ_IS_FLUSH(rq) \\
 			((rq)->cmd_flags & CAS_REQ_FLUSH)"
 		add_define "CAS_WRITE_FLUSH \\
 			WRITE_FLUSH"
-    if compile_module "BIO_FLUSH" "linux/bio.h"
-    then
 		add_define "CAS_IS_WRITE_FLUSH(flags) \\
-			((flags) & BIO_FLUSH)"
+			((flags) & BIO_FLUSH)" ;;
-    else
+    "2")
+		add_define "CAS_RQ_IS_FLUSH(rq) \\
+			((rq)->cmd_flags & CAS_REQ_FLUSH)"
+		add_define "CAS_WRITE_FLUSH \\
+			WRITE_FLUSH"
 		add_define "CAS_IS_WRITE_FLUSH(flags) \\
-			((flags) & CAS_REQ_FLUSH)"
+			((flags) & CAS_REQ_FLUSH)" ;;
-    fi
+	"3")
-elif compile_module "REQ_PREFLUSH" "linux/blk_types.h"
-then
 		add_define "CAS_RQ_IS_FLUSH(rq) \\
 			((rq)->cmd_flags & REQ_PREFLUSH)"
 		add_define "CAS_WRITE_FLUSH \\
 			(REQ_OP_WRITE | REQ_PREFLUSH)"
 		add_define "CAS_IS_WRITE_FLUSH(flags) \\
-        (CAS_WRITE_FLUSH == ((flags) & CAS_WRITE_FLUSH))"
+			(CAS_WRITE_FLUSH == ((flags) & CAS_WRITE_FLUSH))" ;;
-else
+	"4")
 		add_define "CAS_RQ_IS_FLUSH(rq) \\
 			0"
 		add_define "CAS_IS_WRITE_FLUSH(flags) \\
 			(WRITE_BARRIER == ((flags) & WRITE_BARRIER))"
 		add_define "CAS_WRITE_FLUSH \\
-		WRITE_BARRIER"
+			WRITE_BARRIER" ;;
-fi
+    *)
+        exit 1
+    esac
+}
+
+conf_run $@

configure.d/conf_framework

@@ -60,4 +60,11 @@ kernel_not_supp_fail() {
        exit 1
 }
 
+conf_run() {
+    case "$1" in
+        "check") check ;;
+        "apply") apply $2 ;;
+    esac
+}
+
 IFS='?'