From: Theodore Ts'o <tytso@mit.edu>
Date: Wed, 31 Aug 2016 22:13:16 +0000 (-0400)
Subject: debugfs: add the debugfs copy_inode subcommand
X-Git-Tag: v1.43.2~17
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=b199291909e5951b74c9ad43163b5022a329dc26;p=tools%2Fe2fsprogs.git

debugfs: add the debugfs copy_inode subcommand

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/debugfs/debug_cmds.ct b/debugfs/debug_cmds.ct
index 34dad9e..1ff6c9d 100644
--- a/debugfs/debug_cmds.ct
+++ b/debugfs/debug_cmds.ct
@@ -73,6 +73,9 @@ request do_rm, "Remove a file (unlink and kill_file, if appropriate)",
 request do_kill_file, "Deallocate an inode and its blocks",
 	kill_file;
 
+request do_copy_inode, "Copy the inode structure",
+	copy_inode;
+
 request do_clri, "Clear an inode's contents",
 	clri;
 
diff --git a/debugfs/debugfs.8.in b/debugfs/debugfs.8.in
index e85034a..e151d43 100644
--- a/debugfs/debugfs.8.in
+++ b/debugfs/debugfs.8.in
@@ -225,6 +225,12 @@ master superblock.
 Clear the contents of the inode
 .IR filespec .
 .TP
+.BI copy_inode " source_inode destination_inode"
+Copy the conents of the inode structure in
+.I source_inode
+and use it to overwrite the inode structure at
+.IR destination_inode .
+.TP
 .BI dirsearch " filespec filename"
 Search the directory
 .I filespec
diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
index b2b06fe..f25ab1e 100644
--- a/debugfs/debugfs.c
+++ b/debugfs/debugfs.c
@@ -1584,6 +1584,35 @@ void do_unlink(int argc, char *argv[])
 
 	unlink_file_by_name(argv[1]);
 }
+
+void do_copy_inode(int argc, char *argv[])
+{
+	ext2_ino_t	src_ino, dest_ino;
+	struct ext2_inode inode;
+	unsigned char	buf[4096];
+	int		retval;
+
+	if (common_args_process(argc, argv, 3, 3, "copy_inode",
+				"<source file> <dest_name>", CHECK_FS_RW))
+		return;
+
+	src_ino = string_to_inode(argv[1]);
+	if (!src_ino)
+		return;
+
+	dest_ino = string_to_inode(argv[2]);
+	if (!dest_ino)
+		return;
+
+	if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
+				    argv[0], sizeof(buf)))
+		return;
+
+	if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
+				     argv[0], sizeof(buf)))
+		return;
+}
+
 #endif /* READ_ONLY */
 
 void do_find_free_block(int argc, char *argv[])