External software wanting to use the functionality provided by the btrfs
send ioctl has a hard time doing so without replicating tons of work. Of
particular interest are functions like btrfs_read_and_process_send_stream()
and subvol_uuid_search(). As that functionality requires a bit more than
just send-stream.c and send-utils.c we have to pull in some other parts of
the progs package.
This patch adds code to the Makefile and headers to create a library,
libbtrfs which the btrfs command now links to.
Signed-off-by: Mark Fasheh <mfasheh@xxxxxxx>
---
Makefile | 38 ++++++++++++++++++++++++++++----------
btrfs-list.h | 4 ++++
crc32c.h | 4 ++++
ctree.h | 9 +++++++++
extent-cache.h | 6 ++++++
extent_io.h | 7 +++++++
radix-tree.h | 4 ++++
rbtree.h | 4 ++++
send-utils.h | 5 +++++
9 files changed, 71 insertions(+), 10 deletions(-)
diff --git a/Makefile b/Makefile
index 4894903..29c63b1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,17 @@
CC = gcc
-AM_CFLAGS = -Wall -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2
-CFLAGS = -g -O1
+AM_CFLAGS = -Wall -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2 -DBTRFS_FLAT_INCLUDES
+CFLAGS = -g -O1 -fPIC
objects = ctree.o disk-io.o radix-tree.o extent-tree.o print-tree.o \
- root-tree.o dir-item.o file-item.o inode-item.o \
- inode-map.o crc32c.o rbtree.o extent-cache.o extent_io.o \
- volumes.o utils.o btrfs-list.o btrfslabel.o repair.o \
- send-stream.o send-utils.o qgroup.o
+ root-tree.o dir-item.o file-item.o inode-item.o inode-map.o \
+ extent-cache.o extent_io.o volumes.o utils.o btrfslabel.o repair.o \
+ qgroup.o
cmds_objects = cmds-subvolume.o cmds-filesystem.o cmds-device.o cmds-scrub.o \
cmds-inspect.o cmds-balance.o cmds-send.o cmds-receive.o \
cmds-quota.o cmds-qgroup.o
+libbtrfs_objects = send-stream.o send-utils.o rbtree.o btrfs-list.o crc32c.o
+libbtrfs_headers = send-stream.h send-utils.h send.h rbtree.h btrfs-list.h \
+ crc32c.h list.h kerncompat.h radix-tree.h extent-cache.h \
+ extent_io.h ioctl.h ctree.h
CHECKFLAGS= -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ -Wbitwise \
-Wuninitialized -Wshadow -Wundef
@@ -17,13 +20,18 @@ DEPFLAGS = -Wp,-MMD,$(@D)/.$(@F).d,-MT,$@
INSTALL = install
prefix ?= /usr/local
bindir = $(prefix)/bin
-LIBS=-luuid -lm
+libdir = $(prefix)/lib
+incdir = $(prefix)/include/btrfs
+LIBS=-luuid -lm -L. -lbtrfs
RESTORE_LIBS=-lz
progs = btrfsctl mkfs.btrfs btrfs-debug-tree btrfs-show btrfs-vol btrfsck \
btrfs btrfs-map-logical btrfs-image btrfs-zero-log btrfs-convert \
btrfs-find-root btrfs-restore btrfstune
+libs = libbtrfs.so.1.0 libbtrfs.so.1 libbtrfs.so
+headers = $(libbtrfs_headers)
+
# make C=1 to enable sparse
ifdef C
check = sparse $(CHECKFLAGS)
@@ -36,11 +44,16 @@ endif
$(CC) $(DEPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c $<
-all: version $(progs) manpages
+all: version $(libs) $(progs) manpages
version:
bash version.sh
+$(libs): $(libbtrfs_objects) send.h
+ $(CC) $(CFLAGS) $(libbtrfs_objects) -shared -Wl,-soname,libbtrfs.so.1 -o libbtrfs.so.1.0
+ ln -sf libbtrfs.so.1.0 libbtrfs.so.1
+ ln -sf libbtrfs.so.1.0 libbtrfs.so
+
btrfs: $(objects) btrfs.o help.o common.o $(cmds_objects)
$(CC) $(CFLAGS) -o btrfs btrfs.o help.o common.o $(cmds_objects) \
$(objects) $(LDFLAGS) $(LIBS) -lpthread
@@ -109,12 +122,17 @@ install-man:
cd man; $(MAKE) install
clean :
- rm -f $(progs) cscope.out *.o .*.d btrfs-convert btrfs-image btrfs-select-super \
- btrfs-zero-log btrfstune dir-test ioctl-test quick-test version.h
+ rm -f $(progs) $(libs) cscope.out *.o .*.d btrfs-convert btrfs-image \
+ btrfs-select-super btrfs-zero-log btrfstune dir-test ioctl-test \
+ quick-test version.h
cd man; $(MAKE) clean
install: $(progs) install-man
$(INSTALL) -m755 -d $(DESTDIR)$(bindir)
$(INSTALL) $(progs) $(DESTDIR)$(bindir)
+ $(INSTALL) -m755 -d $(DESTDIR)$(libdir)
+ $(INSTALL) $(libs) $(DESTDIR)$(libdir)
+ $(INSTALL) -m755 -d $(DESTDIR)$(incdir)
+ $(INSTALL) $(headers) $(DESTDIR)$(incdir)
-include .*.d
diff --git a/btrfs-list.h b/btrfs-list.h
index cde4b3c..da6bf1c 100644
--- a/btrfs-list.h
+++ b/btrfs-list.h
@@ -16,7 +16,11 @@
* Boston, MA 021110-1307, USA.
*/
+#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
+#else
+#include <btrfs/kerncompat.h>
+#endif /* BTRFS_FLAT_INCLUDES */
struct root_info;
diff --git a/crc32c.h b/crc32c.h
index 7f12e77..c552ef6 100644
--- a/crc32c.h
+++ b/crc32c.h
@@ -19,7 +19,11 @@
#ifndef __CRC32C__
#define __CRC32C__
+#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
+#else
+#include <btrfs/kerncompat.h>
+#endif /* BTRFS_FLAT_INCLUDES */
u32 crc32c_le(u32 seed, unsigned char const *data, size_t length);
void crc32c_optimization_init(void);
diff --git a/ctree.h b/ctree.h
index 293b24f..7a1ffce 100644
--- a/ctree.h
+++ b/ctree.h
@@ -19,12 +19,21 @@
#ifndef __BTRFS__
#define __BTRFS__
+#if BTRFS_FLAT_INCLUDES
#include "list.h"
#include "kerncompat.h"
#include "radix-tree.h"
#include "extent-cache.h"
#include "extent_io.h"
#include "ioctl.h"
+#else
+#include <btrfs/list.h>
+#include <btrfs/kerncompat.h>
+#include <btrfs/radix-tree.h>
+#include <btrfs/extent-cache.h>
+#include <btrfs/extent_io.h>
+#include <btrfs/ioctl.h>
+#endif /* BTRFS_FLAT_INCLUDES */
struct btrfs_root;
struct btrfs_trans_handle;
diff --git a/extent-cache.h b/extent-cache.h
index 7f2f2a6..4cd0f79 100644
--- a/extent-cache.h
+++ b/extent-cache.h
@@ -18,8 +18,14 @@
#ifndef __PENDING_EXTENT__
#define __PENDING_EXTENT__
+
+#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
#include "rbtree.h"
+#else
+#include <btrfs/kerncompat.h>
+#include <btrfs/rbtree.h>
+#endif /* BTRFS_FLAT_INCLUDES */
struct cache_tree {
struct rb_root root;
diff --git a/extent_io.h b/extent_io.h
index a5d6bf0..4553859 100644
--- a/extent_io.h
+++ b/extent_io.h
@@ -18,9 +18,16 @@
#ifndef __EXTENTMAP__
#define __EXTENTMAP__
+
+#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
#include "extent-cache.h"
#include "list.h"
+#else
+#include <btrfs/kerncompat.h>
+#include <btrfs/extent-cache.h>
+#include <btrfs/list.h>
+#endif /* BTRFS_FLAT_INCLUDES */
#define EXTENT_DIRTY 1
#define EXTENT_WRITEBACK (1 << 1)
diff --git a/radix-tree.h b/radix-tree.h
index d99ea7e..bf96d83 100644
--- a/radix-tree.h
+++ b/radix-tree.h
@@ -37,7 +37,11 @@
#ifndef _LINUX_RADIX_TREE_H
#define _LINUX_RADIX_TREE_H
+#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
+#else
+#include <btrfs/kerncompat.h>
+#endif /* BTRFS_FLAT_INCLUDES */
#define RADIX_TREE_MAX_TAGS 2
diff --git a/rbtree.h b/rbtree.h
index bed054d..b636ddd 100644
--- a/rbtree.h
+++ b/rbtree.h
@@ -93,7 +93,11 @@ static inline struct page * rb_insert_page_cache(struct inode * inode,
#ifndef _LINUX_RBTREE_H
#define _LINUX_RBTREE_H
+#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
+#else
+#include <btrfs/kerncompat.h>
+#endif /* BTRFS_FLAT_INCLUDES */
struct rb_node
{
unsigned long rb_parent_color;
diff --git a/send-utils.h b/send-utils.h
index da407eb..8040c50 100644
--- a/send-utils.h
+++ b/send-utils.h
@@ -18,8 +18,13 @@
#ifndef SEND_UTILS_H_
#define SEND_UTILS_H_
+#if BTRFS_FLAT_INCLUDES
#include "ctree.h"
#include "rbtree.h"
+#else
+#include <btrfs/ctree.h>
+#include <btrfs/rbtree.h>
+#endif /* BTRFS_FLAT_INCLUDES */
enum subvol_search_type {
subvol_search_by_root_id,
--
1.7.7
--
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