| 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 |
| |