From: Niu Yawei <yawei.niu@intel.com>
Date: Thu, 5 Sep 2013 06:46:10 +0000 (-0400)
Subject: LU-3784 tune2fs: update i_size in ext2fs_file_write()
X-Git-Tag: v1.42.7.wc2~3
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=refs%2Fchanges%2F56%2F7556%2F5;p=tools%2Fe2fsprogs.git

LU-3784 tune2fs: update i_size in ext2fs_file_write()

ext2fs_file_write() needs to update i_size on successful write,
otherwise, ext2fs_file_read() in same open/close cycle will not
be able to read the just written data.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Change-Id: I7ec7d1fcd5e9a355ca0a4399e5e937f853f0a612
---

diff --git a/lib/ext2fs/fileio.c b/lib/ext2fs/fileio.c
index 1f7002c..331f349 100644
--- a/lib/ext2fs/fileio.c
+++ b/lib/ext2fs/fileio.c
@@ -270,7 +270,7 @@ errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
 			    unsigned int nbytes, unsigned int *written)
 {
 	ext2_filsys	fs;
-	errcode_t	retval = 0;
+	errcode_t	retval = 0, rc;
 	unsigned int	start, c, count = 0;
 	const char	*ptr = (const char *) buf;
 
@@ -307,6 +307,13 @@ errcode_t ext2fs_file_write(ext2_file_t file, const void *buf,
 	}
 
 fail:
+	/* Update inode size */
+	if (count != 0 && EXT2_I_SIZE(&file->inode) < file->pos) {
+		rc = ext2fs_file_set_size2(file, file->pos);
+		if (retval == 0)
+			retval = rc;
+	}
+
 	if (written)
 		*written = count;
 	return retval;