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Message-Id: <1375436989-18948-3-git-send-email-wenqing.lz@taobao.com>
Date: Fri, 2 Aug 2013 17:49:29 +0800
From: Zheng Liu <gnehzuil.liu@...il.com>
To: linux-ext4@...r.kernel.org
Cc: Theodore Ts'o <tytso@....edu>, Zheng Liu <wenqing.lz@...bao.com>
Subject: [PATCH v1 02/22] libext2fs: add function to check inline_data flag for an inode
From: Zheng Liu <wenqing.lz@...bao.com>
A new file called `inline_data.c' is created, and a function called
`ext2fs_inode_has_inline_data' is defined to check whether an inode
has inline data or not.
Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>
---
lib/ext2fs/Makefile.in | 8 ++++++++
lib/ext2fs/Makefile.pq | 1 +
lib/ext2fs/ext2fs.h | 3 +++
lib/ext2fs/inline_data.c | 31 +++++++++++++++++++++++++++++++
4 files changed, 43 insertions(+)
create mode 100644 lib/ext2fs/inline_data.c
diff --git a/lib/ext2fs/Makefile.in b/lib/ext2fs/Makefile.in
index dc7b0d1..001c222 100644
--- a/lib/ext2fs/Makefile.in
+++ b/lib/ext2fs/Makefile.in
@@ -59,6 +59,7 @@ OBJS= $(DEBUGFS_LIB_OBJS) $(RESIZE_LIB_OBJS) $(E2IMAGE_LIB_OBJS) \
ind_block.o \
initialize.o \
inline.o \
+ inline_data.o \
inode.o \
io_manager.o \
ismounted.o \
@@ -133,6 +134,7 @@ SRCS= ext2_err.c \
$(srcdir)/ind_block.c \
$(srcdir)/initialize.c \
$(srcdir)/inline.c \
+ $(srcdir)/inline_data.c \
$(srcdir)/inode.c \
$(srcdir)/inode_io.c \
$(srcdir)/imager.c \
@@ -757,6 +759,12 @@ inline.o: $(srcdir)/inline.c $(top_builddir)/lib/config.h \
$(srcdir)/ext2_fs.h $(srcdir)/ext3_extents.h $(top_srcdir)/lib/et/com_err.h \
$(srcdir)/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
$(srcdir)/ext2_ext_attr.h $(srcdir)/bitops.h
+inline_data.o: $(srcdir)/inline_data.c $(top_builddir)/lib/config.h \
+ $(top_builddir)/lib/dirpaths.h $(srcdir)/ext2_fs.h \
+ $(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/ext2fs.h \
+ $(srcdir)/ext2_fs.h $(srcdir)/ext3_extents.h $(top_srcdir)/lib/et/com_err.h \
+ $(srcdir)/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
+ $(srcdir)/ext2_ext_attr.h $(srcdir)/bitops.h
inode.o: $(srcdir)/inode.c $(top_builddir)/lib/config.h \
$(top_builddir)/lib/dirpaths.h $(srcdir)/ext2_fs.h \
$(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/ext2fsP.h \
diff --git a/lib/ext2fs/Makefile.pq b/lib/ext2fs/Makefile.pq
index 2f7b654..89082a7 100644
--- a/lib/ext2fs/Makefile.pq
+++ b/lib/ext2fs/Makefile.pq
@@ -27,6 +27,7 @@ OBJS= alloc.obj \
icount.obj \
initialize.obj \
inline.obj \
+ inline_data.obj \
inode.obj \
ismounted.obj \
link.obj \
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index 100270c..3346c00 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -1333,6 +1333,9 @@ errcode_t ext2fs_icount_validate(ext2_icount_t icount, FILE *);
extern errcode_t ext2fs_get_memalign(unsigned long size,
unsigned long align, void *ptr);
+/* inline_data.c */
+extern int ext2fs_inode_has_inline_data(ext2_filsys fs, ext2_ino_t ino);
+
/* inode.c */
extern void ext2fs_free_inode_cache(struct ext2_inode_cache *icache);
extern errcode_t ext2fs_flush_icache(ext2_filsys fs);
diff --git a/lib/ext2fs/inline_data.c b/lib/ext2fs/inline_data.c
new file mode 100644
index 0000000..fcf82b5
--- /dev/null
+++ b/lib/ext2fs/inline_data.c
@@ -0,0 +1,31 @@
+/*
+ * inline_data.c --- data in inode
+ *
+ * Copyright (C) 2012 Zheng Liu <wenqing.lz@...bao.com>
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <time.h>
+
+#include "ext2_fs.h"
+
+#include "ext2fs.h"
+#include "ext2fsP.h"
+
+int ext2fs_inode_has_inline_data(ext2_filsys fs, ext2_ino_t ino)
+{
+ struct ext2_inode inode;
+ errcode_t retval;
+
+ retval = ext2fs_read_inode(fs, ino, &inode);
+ if (retval)
+ return 0;
+
+ return (inode.i_flags & EXT4_INLINE_DATA_FL);
+}
--
1.7.9.7
--
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