Patchwork [V2,01/11] mke2fs: add the ability to copy files from a given directory

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Submitter Robert Yang
Date Dec. 24, 2013, 8:47 a.m.
Message ID <1387874847-4922-2-git-send-email-liezhi.yang@windriver.com>
Download mbox | patch
Permalink /patch/304910/
State Superseded
Headers show

Comments

Robert Yang - Dec. 24, 2013, 8:47 a.m.
We will add a -d option which will be used for adding the files from a
given directory to the filesystem, it is similiar to genext2fs, but
genext2fs doesn't fully support ext4.

* We already have the basic operations in debugfs:
  - Copy regular file
  - Create directory
  - Create symlink
  - Create special file

  We will move these operations into create_inode.h and create_inode.c,
  then let both mke2fs and debugfs use them.

* What we need to do are:
  - Copy the given directory recursively, this will be done by the
    populate_fs()
  - Set the owner, mode and other informations
  - Handle the hard links

TODO:
  - The libext2fs can't create the socket file (S_IFSOCK), do we have a
    plan to support it ?

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
---
 misc/create_inode.c |   26 ++++++++++++++++++++++++++
 misc/create_inode.h |   17 +++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 misc/create_inode.c
 create mode 100644 misc/create_inode.h

Patch

diff --git a/misc/create_inode.c b/misc/create_inode.c
new file mode 100644
index 0000000..46aaa60
--- /dev/null
+++ b/misc/create_inode.c
@@ -0,0 +1,26 @@ 
+#include "create_inode.h"
+
+/* Make a special file which is block, character and fifo */
+errcode_t do_mknod_internal(ext2_ino_t cwd, const char *name, struct stat *st)
+{
+}
+
+/* Make a symlink name -> target */
+errcode_t do_symlink_internal(ext2_ino_t cwd, const char *name, char *target)
+{
+}
+
+/* Make a directory in the fs */
+errcode_t do_mkdir_internal(ext2_ino_t cwd, const char *name, struct stat *st)
+{
+}
+
+/* Copy the native file to the fs */
+errcode_t do_write_internal(ext2_ino_t cwd, const char *src, const char *dest)
+{
+}
+
+/* Copy files from source_dir to fs */
+errcode_t populate_fs(ext2_ino_t parent_ino, const char *source_dir)
+{
+}
diff --git a/misc/create_inode.h b/misc/create_inode.h
new file mode 100644
index 0000000..9fc97fa
--- /dev/null
+++ b/misc/create_inode.h
@@ -0,0 +1,17 @@ 
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include "et/com_err.h"
+#include "e2p/e2p.h"
+#include "ext2fs/ext2fs.h"
+#include "nls-enable.h"
+
+ext2_filsys    current_fs;
+ext2_ino_t     root;
+
+/* For populating the filesystem */
+extern errcode_t populate_fs(ext2_ino_t parent_ino, const char *source_dir);
+extern errcode_t do_mknod_internal(ext2_ino_t cwd, const char *name, struct stat *st);
+extern errcode_t do_symlink_internal(ext2_ino_t cwd, const char *name, char *target);
+extern errcode_t do_mkdir_internal(ext2_ino_t cwd, const char *name, struct stat *st);
+extern errcode_t do_write_internal(ext2_ino_t cwd, const char *src, const char *dest);