bug#80533: [PATCH] stat: show ext4 fs

forcemerge 13582 80533
stop

This has been proposed a few times:

https://lists.gnu.org/archive/html/bug-coreutils/2009-02/msg00160.html
https://lists.gnu.org/archive/html/coreutils/2012-12/msg00065.html
https://bugs.gnu.org/13582

On 03/03/2026 14:21, Weixie Cui via GNU coreutils Bug Reports wrote:
> From: Weixie Cui <[email protected]>
> 
> / is ext4 filesystem
> stat -f -c %T /
> result in:
>   ext2/ext3
> should result in:
> ext2/ext3/ext4
> ---
>   src/stat.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/stat.c b/src/stat.c
> index e682bc6b9..4a2b93033 100644
> --- a/src/stat.c
> +++ b/src/stat.c
> @@ -366,7 +366,7 @@ human_fstype (STRUCT_STATVFS const *statfsbuf)
>       case S_MAGIC_EXT: /* 0x137D local */
>         return "ext";
>       case S_MAGIC_EXT2: /* 0xEF53 local */
> -      return "ext2/ext3";
> +      return "ext2/ext3/ext4";
>       case S_MAGIC_EXT2_OLD: /* 0xEF51 local */
>         return "ext2";
>       case S_MAGIC_F2FS: /* 0xF2F52010 local */