// SPDX-License-Identifier: GPL-2.0#include <linux/ceph/ceph_debug.h> #include <linux/module.h>#include <linux/err.h>#include <linux/slab.h> #include <linux/ceph/types.h>#include <linux/ceph/decode.h>#include <linux/ceph/libceph.h>#include <linux/ceph/messenger.h>#include "auth_none.h"#include "auth_x.h" /* * get protocol handler */static u32 supported_protocols[] = { CEPH_AUTH_NONE, CEPH_AUTH_CEPHX}; static int init_protocol(struct ceph_auth_client *ac, int proto){ dout("%s proto %d\n", __func__, proto); switch (proto) { case CEPH_AUTH_NONE: return ceph_auth_none_init(ac); case CEPH_AUTH_CEPHX: return ceph_x_init(ac); default: pr_err("bad auth protocol %d\n", proto); return -EINVAL; }} void ceph_auth_set_global_id(struct ceph_auth_client *ac, u64 global_id){ dout("%s global_id %llu\n", __func__, global_id); if (!global_id) pr_err("got zero global_id\n"); if (ac->global_id && global_id != ac->global_id) pr_err("global_id changed from %llu to %llu\n", ac->global_id, global_id); ac->global_id = global_id;} /* * setup, teardown. */struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_crypto_key *key, const int *con_modes){ struct ceph_auth_client *ac; ac = kzalloc_obj(*ac, GFP_NOFS); if (!ac) return ERR_PTR(-ENOMEM); mutex_init(&ac->mutex); ac->negotiating = true; if (name) ac->name = name; else ac->name = CEPH_AUTH_NAME_DEFAULT; ac->key = key; ac->preferred_mode = con_modes[0]; ac->fallback_mode = con_modes[1]; dout("%s name '%s' preferred_mode %d fallback_mode %d\n", __func__, ac->name, ac->preferred_mode, ac->fallback_mode); return ac;} 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);} /* * EntityName, not to be confused with entity_name_t */int ceph_auth_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, CEPH_AUTH_UNKNOWN); /* 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_auth_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 build_request(struct ceph_auth_client *ac, bool add_header, void *buf, int buf_len){ void *end = buf + buf_len; void *p; int ret; p = buf; if (add_header) { /* struct ceph_mon_request_header + protocol */ ceph_encode_64_safe(&p, end, 0, e_range); ceph_encode_16_safe(&p, end, -1, e_range); ceph_encode_64_safe(&p, end, 0, e_range); ceph_encode_32_safe(&p, end, ac->protocol, e_range); } ceph_encode_need(&p, end, sizeof(u32), e_range); ret = ac->ops->build_request(ac, p + sizeof(u32), end); if (ret < 0) { pr_err("auth protocol '%s' building request failed: %d\n", ceph_auth_proto_name(ac->protocol), ret); return ret; } dout(" built request %d bytes\n", ret); ceph_encode_32(&p, ret); return p + ret - buf; e_range: return -ERANGE;} /* * 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; u32 payload_len; char *result_msg; u32 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); ceph_decode_need(&p, end, payload_len, bad); payload = p; p += payload_len; ceph_decode_need(&p, end, sizeof(u32), bad); result_msg_len = ceph_decode_32(&p); ceph_decode_need(&p, end, result_msg_len, bad); 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 (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) { ret = init_protocol(ac, protocol); if (ret) { pr_err("auth protocol '%s' init failed: %d\n", ceph_auth_proto_name(protocol), ret); goto out; } } ac->negotiating = false; } if (result < 0) { pr_err("auth protocol '%s' mauth authentication failed: %d\n", ceph_auth_proto_name(ac->protocol), result); ret = result; goto out; } ret = ac->ops->handle_reply(ac, global_id, payload, payload_end, NULL, NULL, NULL, NULL); if (ret == -EAGAIN) { ret = build_request(ac, true, reply_buf, reply_len); goto out; } else if (ret) { goto out; } 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->ops->should_authenticate(ac)) ret = build_request(ac, true, 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_get_authorizer(struct ceph_auth_client *ac, struct ceph_auth_handshake *auth, int peer_type, bool force_new, int *proto, int *pref_mode, int *fallb_mode){ int ret; mutex_lock(&ac->mutex); if (force_new && auth->authorizer) { ceph_auth_destroy_authorizer(auth->authorizer); auth->authorizer = NULL; } if (!auth->authorizer) ret = ac->ops->create_authorizer(ac, peer_type, auth); else if (ac->ops->update_authorizer) ret = ac->ops->update_authorizer(ac, peer_type, auth); else ret = 0; if (ret) goto out; *proto = ac->protocol; if (pref_mode && fallb_mode) { *pref_mode = ac->preferred_mode; *fallb_mode = ac->fallback_mode; } out: mutex_unlock(&ac->mutex); return ret;}EXPORT_SYMBOL(__ceph_auth_get_authorizer); void ceph_auth_destroy_authorizer(struct ceph_authorizer *a){ a->destroy(a);}EXPORT_SYMBOL(ceph_auth_destroy_authorizer); int ceph_auth_add_authorizer_challenge(struct ceph_auth_client *ac, struct ceph_authorizer *a, void *challenge_buf, int challenge_buf_len){ int ret = 0; mutex_lock(&ac->mutex); if (ac->ops && ac->ops->add_authorizer_challenge) ret = ac->ops->add_authorizer_challenge(ac, a, challenge_buf, challenge_buf_len); mutex_unlock(&ac->mutex); return ret;}EXPORT_SYMBOL(ceph_auth_add_authorizer_challenge); int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac, struct ceph_authorizer *a, void *reply, int reply_len, u8 *session_key, int *session_key_len, u8 *con_secret, int *con_secret_len){ int ret = 0; mutex_lock(&ac->mutex); if (ac->ops && ac->ops->verify_authorizer_reply) ret = ac->ops->verify_authorizer_reply(ac, a, reply, reply_len, session_key, session_key_len, con_secret, con_secret_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); /* * msgr2 authentication */ static bool contains(const int *arr, int cnt, int val){ int i; for (i = 0; i < cnt; i++) { if (arr[i] == val) return true; } return false;} static int encode_con_modes(void **p, void *end, int pref_mode, int fallb_mode){ WARN_ON(pref_mode == CEPH_CON_MODE_UNKNOWN); if (fallb_mode != CEPH_CON_MODE_UNKNOWN) { ceph_encode_32_safe(p, end, 2, e_range); ceph_encode_32_safe(p, end, pref_mode, e_range); ceph_encode_32_safe(p, end, fallb_mode, e_range); } else { ceph_encode_32_safe(p, end, 1, e_range); ceph_encode_32_safe(p, end, pref_mode, e_range); } return 0; e_range: return -ERANGE;} /* * Similar to ceph_auth_build_hello(). */int ceph_auth_get_request(struct ceph_auth_client *ac, void *buf, int buf_len){ int proto = ac->key ? CEPH_AUTH_CEPHX : CEPH_AUTH_NONE; void *end = buf + buf_len; void *lenp; void *p; int ret; mutex_lock(&ac->mutex); if (ac->protocol == CEPH_AUTH_UNKNOWN) { ret = init_protocol(ac, proto); if (ret) { pr_err("auth protocol '%s' init failed: %d\n", ceph_auth_proto_name(proto), ret); goto out; } } else { WARN_ON(ac->protocol != proto); ac->ops->reset(ac); } p = buf; ceph_encode_32_safe(&p, end, ac->protocol, e_range); ret = encode_con_modes(&p, end, ac->preferred_mode, ac->fallback_mode); if (ret) goto out; lenp = p; p += 4; /* space for len */ ceph_encode_8_safe(&p, end, CEPH_AUTH_MODE_MON, e_range); ret = ceph_auth_entity_name_encode(ac->name, &p, end); if (ret) goto out; ceph_encode_64_safe(&p, end, ac->global_id, e_range); ceph_encode_32(&lenp, p - lenp - 4); ret = p - buf; out: mutex_unlock(&ac->mutex); return ret; e_range: ret = -ERANGE; goto out;} int ceph_auth_handle_reply_more(struct ceph_auth_client *ac, void *reply, int reply_len, void *buf, int buf_len){ int ret; mutex_lock(&ac->mutex); ret = ac->ops->handle_reply(ac, 0, reply, reply + reply_len, NULL, NULL, NULL, NULL); if (ret == -EAGAIN) ret = build_request(ac, false, buf, buf_len); else WARN_ON(ret >= 0); mutex_unlock(&ac->mutex); return ret;} int ceph_auth_handle_reply_done(struct ceph_auth_client *ac, u64 global_id, void *reply, int reply_len, u8 *session_key, int *session_key_len, u8 *con_secret, int *con_secret_len){ int ret; mutex_lock(&ac->mutex);Lines 1–500 of 661. 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// SPDX-License-Identifier: GPL-2.0 #include <linux/ceph/ceph_debug.h> #include <linux/module.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/ceph/types.h> #include <linux/ceph/decode.h> #include <linux/ceph/libceph.h> #include <linux/ceph/messenger.h> #include "auth_none.h" #include "auth_x.h" /* * get protocol handler */ static u32 supported_protocols[] = { CEPH_AUTH_NONE, CEPH_AUTH_CEPHX }; static int init_protocol(struct ceph_auth_client *ac, int proto) { dout("%s proto %d\n", __func__, proto); switch (proto) { case CEPH_AUTH_NONE: return ceph_auth_none_init(ac); case CEPH_AUTH_CEPHX: return ceph_x_init(ac); default: pr_err("bad auth protocol %d\n", proto); return -EINVAL; } } void ceph_auth_set_global_id(struct ceph_auth_client *ac, u64 global_id) { dout("%s global_id %llu\n", __func__, global_id); if (!global_id) pr_err("got zero global_id\n"); if (ac->global_id && global_id != ac->global_id) pr_err("global_id changed from %llu to %llu\n", ac->global_id, global_id); ac->global_id = global_id; } /* * setup, teardown. */ struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_crypto_key *key, const int *con_modes) { struct ceph_auth_client *ac; ac = kzalloc_obj(*ac, GFP_NOFS); if (!ac) return ERR_PTR(-ENOMEM); mutex_init(&ac->mutex); ac->negotiating = true; if (name) ac->name = name; else ac->name = CEPH_AUTH_NAME_DEFAULT; ac->key = key; ac->preferred_mode = con_modes[0]; ac->fallback_mode = con_modes[1]; dout("%s name '%s' preferred_mode %d fallback_mode %d\n", __func__, ac->name, ac->preferred_mode, ac->fallback_mode); return ac; } 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); } /* * EntityName, not to be confused with entity_name_t */ int ceph_auth_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, CEPH_AUTH_UNKNOWN); /* 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_auth_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 build_request(struct ceph_auth_client *ac, bool add_header, void *buf, int buf_len) { void *end = buf + buf_len; void *p; int ret; p = buf; if (add_header) { /* struct ceph_mon_request_header + protocol */ ceph_encode_64_safe(&p, end, 0, e_range); ceph_encode_16_safe(&p, end, -1, e_range); ceph_encode_64_safe(&p, end, 0, e_range); ceph_encode_32_safe(&p, end, ac->protocol, e_range); } ceph_encode_need(&p, end, sizeof(u32), e_range); ret = ac->ops->build_request(ac, p + sizeof(u32), end); if (ret < 0) { pr_err("auth protocol '%s' building request failed: %d\n", ceph_auth_proto_name(ac->protocol), ret); return ret; } dout(" built request %d bytes\n", ret); ceph_encode_32(&p, ret); return p + ret - buf; e_range: return -ERANGE; } /* * 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; u32 payload_len; char *result_msg; u32 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); ceph_decode_need(&p, end, payload_len, bad); payload = p; p += payload_len; ceph_decode_need(&p, end, sizeof(u32), bad); result_msg_len = ceph_decode_32(&p); ceph_decode_need(&p, end, result_msg_len, bad); 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 (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) { ret = init_protocol(ac, protocol); if (ret) { pr_err("auth protocol '%s' init failed: %d\n", ceph_auth_proto_name(protocol), ret); goto out; } } ac->negotiating = false; } if (result < 0) { pr_err("auth protocol '%s' mauth authentication failed: %d\n", ceph_auth_proto_name(ac->protocol), result); ret = result; goto out; } ret = ac->ops->handle_reply(ac, global_id, payload, payload_end, NULL, NULL, NULL, NULL); if (ret == -EAGAIN) { ret = build_request(ac, true, reply_buf, reply_len); goto out; } else if (ret) { goto out; } 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->ops->should_authenticate(ac)) ret = build_request(ac, true, 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_get_authorizer(struct ceph_auth_client *ac, struct ceph_auth_handshake *auth, int peer_type, bool force_new, int *proto, int *pref_mode, int *fallb_mode) { int ret; mutex_lock(&ac->mutex); if (force_new && auth->authorizer) { ceph_auth_destroy_authorizer(auth->authorizer); auth->authorizer = NULL; } if (!auth->authorizer) ret = ac->ops->create_authorizer(ac, peer_type, auth); else if (ac->ops->update_authorizer) ret = ac->ops->update_authorizer(ac, peer_type, auth); else ret = 0; if (ret) goto out; *proto = ac->protocol; if (pref_mode && fallb_mode) { *pref_mode = ac->preferred_mode; *fallb_mode = ac->fallback_mode; } out: mutex_unlock(&ac->mutex); return ret; } EXPORT_SYMBOL(__ceph_auth_get_authorizer); void ceph_auth_destroy_authorizer(struct ceph_authorizer *a) { a->destroy(a); } EXPORT_SYMBOL(ceph_auth_destroy_authorizer); int ceph_auth_add_authorizer_challenge(struct ceph_auth_client *ac, struct ceph_authorizer *a, void *challenge_buf, int challenge_buf_len) { int ret = 0; mutex_lock(&ac->mutex); if (ac->ops && ac->ops->add_authorizer_challenge) ret = ac->ops->add_authorizer_challenge(ac, a, challenge_buf, challenge_buf_len); mutex_unlock(&ac->mutex); return ret; } EXPORT_SYMBOL(ceph_auth_add_authorizer_challenge); int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac, struct ceph_authorizer *a, void *reply, int reply_len, u8 *session_key, int *session_key_len, u8 *con_secret, int *con_secret_len) { int ret = 0; mutex_lock(&ac->mutex); if (ac->ops && ac->ops->verify_authorizer_reply) ret = ac->ops->verify_authorizer_reply(ac, a, reply, reply_len, session_key, session_key_len, con_secret, con_secret_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); /* * msgr2 authentication */ static bool contains(const int *arr, int cnt, int val) { int i; for (i = 0; i < cnt; i++) { if (arr[i] == val) return true; } return false; } static int encode_con_modes(void **p, void *end, int pref_mode, int fallb_mode) { WARN_ON(pref_mode == CEPH_CON_MODE_UNKNOWN); if (fallb_mode != CEPH_CON_MODE_UNKNOWN) { ceph_encode_32_safe(p, end, 2, e_range); ceph_encode_32_safe(p, end, pref_mode, e_range); ceph_encode_32_safe(p, end, fallb_mode, e_range); } else { ceph_encode_32_safe(p, end, 1, e_range); ceph_encode_32_safe(p, end, pref_mode, e_range); } return 0; e_range: return -ERANGE; } /* * Similar to ceph_auth_build_hello(). */ int ceph_auth_get_request(struct ceph_auth_client *ac, void *buf, int buf_len) { int proto = ac->key ? CEPH_AUTH_CEPHX : CEPH_AUTH_NONE; void *end = buf + buf_len; void *lenp; void *p; int ret; mutex_lock(&ac->mutex); if (ac->protocol == CEPH_AUTH_UNKNOWN) { ret = init_protocol(ac, proto); if (ret) { pr_err("auth protocol '%s' init failed: %d\n", ceph_auth_proto_name(proto), ret); goto out; } } else { WARN_ON(ac->protocol != proto); ac->ops->reset(ac); } p = buf; ceph_encode_32_safe(&p, end, ac->protocol, e_range); ret = encode_con_modes(&p, end, ac->preferred_mode, ac->fallback_mode); if (ret) goto out; lenp = p; p += 4; /* space for len */ ceph_encode_8_safe(&p, end, CEPH_AUTH_MODE_MON, e_range); ret = ceph_auth_entity_name_encode(ac->name, &p, end); if (ret) goto out; ceph_encode_64_safe(&p, end, ac->global_id, e_range); ceph_encode_32(&lenp, p - lenp - 4); ret = p - buf; out: mutex_unlock(&ac->mutex); return ret; e_range: ret = -ERANGE; goto out; } int ceph_auth_handle_reply_more(struct ceph_auth_client *ac, void *reply, int reply_len, void *buf, int buf_len) { int ret; mutex_lock(&ac->mutex); ret = ac->ops->handle_reply(ac, 0, reply, reply + reply_len, NULL, NULL, NULL, NULL); if (ret == -EAGAIN) ret = build_request(ac, false, buf, buf_len); else WARN_ON(ret >= 0); mutex_unlock(&ac->mutex); return ret; } int ceph_auth_handle_reply_done(struct ceph_auth_client *ac, u64 global_id, void *reply, int reply_len, u8 *session_key, int *session_key_len, u8 *con_secret, int *con_secret_len) { int ret; mutex_lock(&ac->mutex);