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libceph: deprecate [no]cephx_require_signatures options

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These options were introduced in 3.19 with support for message signing
and are rather useless, as explained in commit a51983e4dd ("libceph:
add nocephx_sign_messages option").  Deprecate them.

In case there is someone out there with a cluster that lacks support
for MSG_AUTH feature (very unlikely but has to be considered since we
haven't formally raised the bar from argonaut to bobtail yet), make
nocephx_sign_messages also waive MSG_AUTH requirement.  This is probably
how it should have been done in the first place -- if we aren't going
to sign, requiring the signing feature makes no sense.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
This commit is contained in:
Ilya Dryomov 2021-01-22 15:41:14 +01:00
parent a8810cdc00
commit afd56e78dd
2 changed files with 8 additions and 10 deletions
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7
include/linux/ceph/libceph.h
View File

@ -32,10 +32,9 @@
#define CEPH_OPT_NOSHARE (1<<1) /* don't share client with other sbs */
#define CEPH_OPT_MYIP (1<<2) /* specified my ip */
#define CEPH_OPT_NOCRC (1<<3) /* no data crc on writes (msgr1) */
#define CEPH_OPT_NOMSGAUTH (1<<4) /* don't require msg signing feat */
#define CEPH_OPT_TCP_NODELAY (1<<5) /* TCP_NODELAY on TCP sockets */
#define CEPH_OPT_NOMSGSIGN (1<<6) /* don't sign msgs (msgr1) */
#define CEPH_OPT_ABORT_ON_FULL (1<<7) /* abort w/ ENOSPC when full */
#define CEPH_OPT_TCP_NODELAY (1<<4) /* TCP_NODELAY on TCP sockets */
#define CEPH_OPT_NOMSGSIGN (1<<5) /* don't sign msgs (msgr1) */
#define CEPH_OPT_ABORT_ON_FULL (1<<6) /* abort w/ ENOSPC when full */
#define CEPH_OPT_DEFAULT (CEPH_OPT_TCP_NODELAY)

11
net/ceph/ceph_common.c
View File

@ -307,7 +307,8 @@ static const struct constant_table ceph_param_ms_mode[] = {
static const struct fs_parameter_spec ceph_parameters[] = {
fsparam_flag ("abort_on_full", Opt_abort_on_full),
fsparam_flag_no ("cephx_require_signatures", Opt_cephx_require_signatures),
__fsparam (NULL, "cephx_require_signatures", Opt_cephx_require_signatures,
fs_param_neg_with_no|fs_param_deprecated, NULL),
fsparam_flag_no ("cephx_sign_messages", Opt_cephx_sign_messages),
fsparam_flag_no ("crc", Opt_crc),
fsparam_string ("crush_location", Opt_crush_location),
@ -596,9 +597,9 @@ int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
break;
case Opt_cephx_require_signatures:
if (!result.negated)
opt->flags &= ~CEPH_OPT_NOMSGAUTH;
warn_plog(&log, "Ignoring cephx_require_signatures");
else
opt->flags |= CEPH_OPT_NOMSGAUTH;
warn_plog(&log, "Ignoring nocephx_require_signatures, use nocephx_sign_messages");
break;
case Opt_cephx_sign_messages:
if (!result.negated)
@ -686,8 +687,6 @@ int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
seq_puts(m, "noshare,");
if (opt->flags & CEPH_OPT_NOCRC)
seq_puts(m, "nocrc,");
if (opt->flags & CEPH_OPT_NOMSGAUTH)
seq_puts(m, "nocephx_require_signatures,");
if (opt->flags & CEPH_OPT_NOMSGSIGN)
seq_puts(m, "nocephx_sign_messages,");
if ((opt->flags & CEPH_OPT_TCP_NODELAY) == 0)
@ -756,7 +755,7 @@ struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private)
client->supported_features = CEPH_FEATURES_SUPPORTED_DEFAULT;
client->required_features = CEPH_FEATURES_REQUIRED_DEFAULT;
if (!ceph_test_opt(client, NOMSGAUTH))
if (!ceph_test_opt(client, NOMSGSIGN))
client->required_features |= CEPH_FEATURE_MSG_AUTH;
/* msgr */