[PATCH] erofs-utils: xattr: skip NFSv4 xattrs building

[Gao Xiang]

Hi Weizhao,

On 2023/4/19 16:56, Weizhao Ouyang wrote:
> Skip NFSv4 xattrs(system.nfs4_acl/dacl/sacl) to avoid ENODATA error when
> compiling AOSP on NFSv4 servers.
> 
> Signed-off-by: Weizhao Ouyang <o451686892 at gmail.com>
Thanks for the catch! Could we ignore any prefixes
with identified "system." (but a print warning might be needed...)?

Thanks,
Gao Xiang


> ---
>   lib/xattr.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/lib/xattr.c b/lib/xattr.c
> index 6034e7b6b4eb..748bf2e13408 100644
> --- a/lib/xattr.c
> +++ b/lib/xattr.c
> @@ -288,6 +288,9 @@ static bool erofs_is_skipped_xattr(const char *key)
>   	if (cfg.sehnd && !strcmp(key, XATTR_SECURITY_PREFIX "selinux"))
>   		return true;
>   #endif
> +	/* skip xattr nfs4_acl/dacl/sacl */
> +	if (!strncmp(key, "system.nfs4_", strlen("system.nfs4_")))
> +		return true;
>   	return false;
>   }
>