From: Robert Yang <liezhi.yang@windriver.com>
Date: Thu, 6 Mar 2014 16:00:24 +0000 (-0500)
Subject: misc/create_inode.c: create symlink
X-Git-Tag: accepted/tizen/common/20140806.102959~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cc1ff6c364c4e6d8ce2702b7e41902637bee69e6;p=platform%2Fupstream%2Fe2fsprogs.git

misc/create_inode.c: create symlink

The do_symlink_internal() is used for creating symlinks, most of the
code are from debugfs/debugfs.c, the debugfs/debugfs.c will be modified
to use this function.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/misc/create_inode.c b/misc/create_inode.c
index 4da8aff..f845103 100644
--- a/misc/create_inode.c
+++ b/misc/create_inode.c
@@ -88,6 +88,38 @@ 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)
 {
+	char			*cp;
+	ext2_ino_t		parent_ino;
+	errcode_t		retval;
+	struct ext2_inode	inode;
+	struct stat		st;
+
+	cp = strrchr(name, '/');
+	if (cp) {
+		*cp = 0;
+		if ((retval =  ext2fs_namei(current_fs, root, cwd, name, &parent_ino))){
+			com_err(name, retval, 0);
+			return retval;
+		}
+		name = cp+1;
+	} else
+		parent_ino = cwd;
+
+try_again:
+	retval = ext2fs_symlink(current_fs, parent_ino, 0, name, target);
+	if (retval == EXT2_ET_DIR_NO_SPACE) {
+		retval = ext2fs_expand_dir(current_fs, parent_ino);
+		if (retval) {
+			com_err("do_symlink_internal", retval, "while expanding directory");
+			return retval;
+		}
+		goto try_again;
+	}
+	if (retval) {
+		com_err("ext2fs_symlink", retval, 0);
+		return retval;
+	}
+
 }
 
 /* Make a directory in the fs */