Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 1 | From 09d3049776882167f7249ee26265b4163d7222c1 Mon Sep 17 00:00:00 2001 |
| 2 | From: Robert Yang <liezhi.yang@windriver.com> |
| 3 | Date: Mon, 23 Dec 2013 03:19:55 -0500 |
| 4 | Subject: [PATCH 04/11] misc/create_inode.c: create symlink |
| 5 | |
| 6 | The do_symlink_internal() is used for creating symlinks, most of the |
| 7 | code are from debugfs/debugfs.c, the debugfs/debugfs.c will be modified |
| 8 | to use this function. |
| 9 | |
| 10 | Upstream-Status: Backport |
| 11 | |
| 12 | Signed-off-by: Robert Yang <liezhi.yang@windriver.com> |
| 13 | Reviewed-by: Darren Hart <dvhart@linux.intel.com> |
| 14 | --- |
| 15 | misc/create_inode.c | 32 ++++++++++++++++++++++++++++++++ |
| 16 | 1 file changed, 32 insertions(+) |
| 17 | |
| 18 | diff --git a/misc/create_inode.c b/misc/create_inode.c |
| 19 | index 4da8aff..f845103 100644 |
| 20 | --- a/misc/create_inode.c |
| 21 | +++ b/misc/create_inode.c |
| 22 | @@ -88,6 +88,38 @@ errcode_t do_mknod_internal(ext2_ino_t cwd, const char *name, struct stat *st) |
| 23 | /* Make a symlink name -> target */ |
| 24 | errcode_t do_symlink_internal(ext2_ino_t cwd, const char *name, char *target) |
| 25 | { |
| 26 | + char *cp; |
| 27 | + ext2_ino_t parent_ino; |
| 28 | + errcode_t retval; |
| 29 | + struct ext2_inode inode; |
| 30 | + struct stat st; |
| 31 | + |
| 32 | + cp = strrchr(name, '/'); |
| 33 | + if (cp) { |
| 34 | + *cp = 0; |
| 35 | + if ((retval = ext2fs_namei(current_fs, root, cwd, name, &parent_ino))){ |
| 36 | + com_err(name, retval, 0); |
| 37 | + return retval; |
| 38 | + } |
| 39 | + name = cp+1; |
| 40 | + } else |
| 41 | + parent_ino = cwd; |
| 42 | + |
| 43 | +try_again: |
| 44 | + retval = ext2fs_symlink(current_fs, parent_ino, 0, name, target); |
| 45 | + if (retval == EXT2_ET_DIR_NO_SPACE) { |
| 46 | + retval = ext2fs_expand_dir(current_fs, parent_ino); |
| 47 | + if (retval) { |
| 48 | + com_err("do_symlink_internal", retval, "while expanding directory"); |
| 49 | + return retval; |
| 50 | + } |
| 51 | + goto try_again; |
| 52 | + } |
| 53 | + if (retval) { |
| 54 | + com_err("ext2fs_symlink", retval, 0); |
| 55 | + return retval; |
| 56 | + } |
| 57 | + |
| 58 | } |
| 59 | |
| 60 | /* Make a directory in the fs */ |
| 61 | -- |
| 62 | 1.7.10.4 |
| 63 | |