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From 09d3049776882167f7249ee26265b4163d7222c1 Mon Sep 17 00:00:00 2001
From: Robert Yang <liezhi.yang@windriver.com>
Date: Mon, 23 Dec 2013 03:19:55 -0500
Subject: [PATCH 04/11] 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.
Upstream-Status: Backport
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
---
misc/create_inode.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
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 */
--
1.7.10.4
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