From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/net/ceph/auth.c | 340 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 340 insertions(+) create mode 100644 kernel/net/ceph/auth.c (limited to 'kernel/net/ceph/auth.c') diff --git a/kernel/net/ceph/auth.c b/kernel/net/ceph/auth.c new file mode 100644 index 000000000..6b923bcaa --- /dev/null +++ b/kernel/net/ceph/auth.c @@ -0,0 +1,340 @@ +#include + +#include +#include +#include + +#include +#include +#include +#include +#include "auth_none.h" +#include "auth_x.h" + + +/* + * get protocol handler + */ +static u32 supported_protocols[] = { + CEPH_AUTH_NONE, + CEPH_AUTH_CEPHX +}; + +static int ceph_auth_init_protocol(struct ceph_auth_client *ac, int protocol) +{ + switch (protocol) { + case CEPH_AUTH_NONE: + return ceph_auth_none_init(ac); + case CEPH_AUTH_CEPHX: + return ceph_x_init(ac); + default: + return -ENOENT; + } +} + +/* + * setup, teardown. + */ +struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_crypto_key *key) +{ + struct ceph_auth_client *ac; + int ret; + + dout("auth_init name '%s'\n", name); + + ret = -ENOMEM; + ac = kzalloc(sizeof(*ac), GFP_NOFS); + if (!ac) + goto out; + + mutex_init(&ac->mutex); + ac->negotiating = true; + if (name) + ac->name = name; + else + ac->name = CEPH_AUTH_NAME_DEFAULT; + dout("auth_init name %s\n", ac->name); + ac->key = key; + return ac; + +out: + return ERR_PTR(ret); +} + +void ceph_auth_destroy(struct ceph_auth_client *ac) +{ + dout("auth_destroy %p\n", ac); + if (ac->ops) + ac->ops->destroy(ac); + kfree(ac); +} + +/* + * Reset occurs when reconnecting to the monitor. + */ +void ceph_auth_reset(struct ceph_auth_client *ac) +{ + mutex_lock(&ac->mutex); + dout("auth_reset %p\n", ac); + if (ac->ops && !ac->negotiating) + ac->ops->reset(ac); + ac->negotiating = true; + mutex_unlock(&ac->mutex); +} + +int ceph_entity_name_encode(const char *name, void **p, void *end) +{ + int len = strlen(name); + + if (*p + 2*sizeof(u32) + len > end) + return -ERANGE; + ceph_encode_32(p, CEPH_ENTITY_TYPE_CLIENT); + ceph_encode_32(p, len); + ceph_encode_copy(p, name, len); + return 0; +} + +/* + * Initiate protocol negotiation with monitor. Include entity name + * and list supported protocols. + */ +int ceph_auth_build_hello(struct ceph_auth_client *ac, void *buf, size_t len) +{ + struct ceph_mon_request_header *monhdr = buf; + void *p = monhdr + 1, *end = buf + len, *lenp; + int i, num; + int ret; + + mutex_lock(&ac->mutex); + dout("auth_build_hello\n"); + monhdr->have_version = 0; + monhdr->session_mon = cpu_to_le16(-1); + monhdr->session_mon_tid = 0; + + ceph_encode_32(&p, 0); /* no protocol, yet */ + + lenp = p; + p += sizeof(u32); + + ceph_decode_need(&p, end, 1 + sizeof(u32), bad); + ceph_encode_8(&p, 1); + num = ARRAY_SIZE(supported_protocols); + ceph_encode_32(&p, num); + ceph_decode_need(&p, end, num * sizeof(u32), bad); + for (i = 0; i < num; i++) + ceph_encode_32(&p, supported_protocols[i]); + + ret = ceph_entity_name_encode(ac->name, &p, end); + if (ret < 0) + goto out; + ceph_decode_need(&p, end, sizeof(u64), bad); + ceph_encode_64(&p, ac->global_id); + + ceph_encode_32(&lenp, p - lenp - sizeof(u32)); + ret = p - buf; +out: + mutex_unlock(&ac->mutex); + return ret; + +bad: + ret = -ERANGE; + goto out; +} + +static int ceph_build_auth_request(struct ceph_auth_client *ac, + void *msg_buf, size_t msg_len) +{ + struct ceph_mon_request_header *monhdr = msg_buf; + void *p = monhdr + 1; + void *end = msg_buf + msg_len; + int ret; + + monhdr->have_version = 0; + monhdr->session_mon = cpu_to_le16(-1); + monhdr->session_mon_tid = 0; + + ceph_encode_32(&p, ac->protocol); + + ret = ac->ops->build_request(ac, p + sizeof(u32), end); + if (ret < 0) { + pr_err("error %d building auth method %s request\n", ret, + ac->ops->name); + goto out; + } + dout(" built request %d bytes\n", ret); + ceph_encode_32(&p, ret); + ret = p + ret - msg_buf; +out: + return ret; +} + +/* + * Handle auth message from monitor. + */ +int ceph_handle_auth_reply(struct ceph_auth_client *ac, + void *buf, size_t len, + void *reply_buf, size_t reply_len) +{ + void *p = buf; + void *end = buf + len; + int protocol; + s32 result; + u64 global_id; + void *payload, *payload_end; + int payload_len; + char *result_msg; + int result_msg_len; + int ret = -EINVAL; + + mutex_lock(&ac->mutex); + dout("handle_auth_reply %p %p\n", p, end); + ceph_decode_need(&p, end, sizeof(u32) * 3 + sizeof(u64), bad); + protocol = ceph_decode_32(&p); + result = ceph_decode_32(&p); + global_id = ceph_decode_64(&p); + payload_len = ceph_decode_32(&p); + payload = p; + p += payload_len; + ceph_decode_need(&p, end, sizeof(u32), bad); + result_msg_len = ceph_decode_32(&p); + result_msg = p; + p += result_msg_len; + if (p != end) + goto bad; + + dout(" result %d '%.*s' gid %llu len %d\n", result, result_msg_len, + result_msg, global_id, payload_len); + + payload_end = payload + payload_len; + + if (global_id && ac->global_id != global_id) { + dout(" set global_id %lld -> %lld\n", ac->global_id, global_id); + ac->global_id = global_id; + } + + if (ac->negotiating) { + /* server does not support our protocols? */ + if (!protocol && result < 0) { + ret = result; + goto out; + } + /* set up (new) protocol handler? */ + if (ac->protocol && ac->protocol != protocol) { + ac->ops->destroy(ac); + ac->protocol = 0; + ac->ops = NULL; + } + if (ac->protocol != protocol) { + ret = ceph_auth_init_protocol(ac, protocol); + if (ret) { + pr_err("error %d on auth protocol %d init\n", + ret, protocol); + goto out; + } + } + + ac->negotiating = false; + } + + ret = ac->ops->handle_reply(ac, result, payload, payload_end); + if (ret == -EAGAIN) { + ret = ceph_build_auth_request(ac, reply_buf, reply_len); + } else if (ret) { + pr_err("auth method '%s' error %d\n", ac->ops->name, ret); + } + +out: + mutex_unlock(&ac->mutex); + return ret; + +bad: + pr_err("failed to decode auth msg\n"); + ret = -EINVAL; + goto out; +} + +int ceph_build_auth(struct ceph_auth_client *ac, + void *msg_buf, size_t msg_len) +{ + int ret = 0; + + mutex_lock(&ac->mutex); + if (!ac->protocol) + ret = ceph_auth_build_hello(ac, msg_buf, msg_len); + else if (ac->ops->should_authenticate(ac)) + ret = ceph_build_auth_request(ac, msg_buf, msg_len); + mutex_unlock(&ac->mutex); + return ret; +} + +int ceph_auth_is_authenticated(struct ceph_auth_client *ac) +{ + int ret = 0; + + mutex_lock(&ac->mutex); + if (ac->ops) + ret = ac->ops->is_authenticated(ac); + mutex_unlock(&ac->mutex); + return ret; +} +EXPORT_SYMBOL(ceph_auth_is_authenticated); + +int ceph_auth_create_authorizer(struct ceph_auth_client *ac, + int peer_type, + struct ceph_auth_handshake *auth) +{ + int ret = 0; + + mutex_lock(&ac->mutex); + if (ac->ops && ac->ops->create_authorizer) + ret = ac->ops->create_authorizer(ac, peer_type, auth); + mutex_unlock(&ac->mutex); + return ret; +} +EXPORT_SYMBOL(ceph_auth_create_authorizer); + +void ceph_auth_destroy_authorizer(struct ceph_auth_client *ac, + struct ceph_authorizer *a) +{ + mutex_lock(&ac->mutex); + if (ac->ops && ac->ops->destroy_authorizer) + ac->ops->destroy_authorizer(ac, a); + mutex_unlock(&ac->mutex); +} +EXPORT_SYMBOL(ceph_auth_destroy_authorizer); + +int ceph_auth_update_authorizer(struct ceph_auth_client *ac, + int peer_type, + struct ceph_auth_handshake *a) +{ + int ret = 0; + + mutex_lock(&ac->mutex); + if (ac->ops && ac->ops->update_authorizer) + ret = ac->ops->update_authorizer(ac, peer_type, a); + mutex_unlock(&ac->mutex); + return ret; +} +EXPORT_SYMBOL(ceph_auth_update_authorizer); + +int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac, + struct ceph_authorizer *a, size_t len) +{ + int ret = 0; + + mutex_lock(&ac->mutex); + if (ac->ops && ac->ops->verify_authorizer_reply) + ret = ac->ops->verify_authorizer_reply(ac, a, len); + mutex_unlock(&ac->mutex); + return ret; +} +EXPORT_SYMBOL(ceph_auth_verify_authorizer_reply); + +void ceph_auth_invalidate_authorizer(struct ceph_auth_client *ac, int peer_type) +{ + mutex_lock(&ac->mutex); + if (ac->ops && ac->ops->invalidate_authorizer) + ac->ops->invalidate_authorizer(ac, peer_type); + mutex_unlock(&ac->mutex); +} +EXPORT_SYMBOL(ceph_auth_invalidate_authorizer); -- cgit 1.2.3-korg