linux-kernel - [RFC PATCH 4.10 5/6] bpf: Rename fdinfo's prog_digest to prog

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Date:   Fri, 23 Dec 2016 18:22:31 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Daniel Borkmann <daniel@...earbox.net>,
        Netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Hannes Frederic Sowa <hannes@...essinduktion.org>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Biggers <ebiggers3@...il.com>,
        Tom Herbert <tom@...bertland.com>,
        "David S. Miller" <davem@...emloft.net>,
        Andy Lutomirski <luto@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>
Subject: [RFC PATCH 4.10 5/6] bpf: Rename fdinfo's prog_digest to prog_sha256

This makes it easier to add another digest algorithm down the road
if needed.  It also serves to force any programs that might have
been written against a kernel that had 'prog_digest' to be updated.

This shouldn't violate any stable API policies, as no released
kernel has ever had 'prog_digest'.

Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: Alexei Starovoitov <ast@...nel.org>
Signed-off-by: Andy Lutomirski <luto@...nel.org>
---
 kernel/bpf/syscall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index e89acea22ecf..956370b80296 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -694,7 +694,7 @@ static void bpf_prog_show_fdinfo(struct seq_file *m, struct file *filp)
 	seq_printf(m,
 		   "prog_type:\t%u\n"
 		   "prog_jited:\t%u\n"
-		   "prog_digest:\t%s\n"
+		   "prog_sha256:\t%s\n"
 		   "memlock:\t%llu\n",
 		   prog->type,
 		   prog->jited,
-- 
2.9.3