From 09d3049776882167f7249ee26265b4163d7222c1 Mon Sep 17 00:00:00 2001 From: Robert Yang 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 Reviewed-by: Darren Hart --- 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