linux-kernel - Re: [PATCH 1/7] cifs: Fix recognizing SFU symlinks

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Message-ID: <20240913200430.zodog6t5uaall6yv@pali>
Date: Fri, 13 Sep 2024 22:04:30 +0200
From: Pali Rohár <pali@...nel.org>
To: Steve French <sfrench@...ba.org>, Paulo Alcantara <pc@...guebit.com>,
	Ronnie Sahlberg <ronniesahlberg@...il.com>
Cc: linux-cifs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] cifs: Fix recognizing SFU symlinks

On Thursday 12 September 2024 14:05:42 Pali Rohár wrote:
> SFU symlinks have 8 byte prefix: "IntxLNK\1".
> So check also the last 8th byte 0x01.
> 
> Signed-off-by: Pali Rohár <pali@...nel.org>

Fixes: 9e294f1c4d4a ("[CIFS] Recognize properly symlinks and char/blk devices (not just FIFOs) created by SFU (part 2 of 2).")

(I located commit which probably by mistake removed that byte 0x01).

> ---
>  fs/smb/client/inode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c
> index 73e2e6c230b7..7d424e769a56 100644
> --- a/fs/smb/client/inode.c
> +++ b/fs/smb/client/inode.c
> @@ -612,7 +612,7 @@ cifs_sfu_type(struct cifs_fattr *fattr, const char *path,
>  			cifs_dbg(FYI, "Socket\n");
>  			fattr->cf_mode |= S_IFSOCK;
>  			fattr->cf_dtype = DT_SOCK;
> -		} else if (memcmp("IntxLNK", pbuf, 7) == 0) {
> +		} else if (memcmp("IntxLNK\1", pbuf, 8) == 0) {
>  			cifs_dbg(FYI, "Symlink\n");
>  			fattr->cf_mode |= S_IFLNK;
>  			fattr->cf_dtype = DT_LNK;
> -- 
> 2.20.1
>