mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-08 01:08:03 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
340
net/ceph/auth.c
Normal file
340
net/ceph/auth.c
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@ -0,0 +1,340 @@
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#include <linux/ceph/ceph_debug.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/ceph/types.h>
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#include <linux/ceph/decode.h>
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#include <linux/ceph/libceph.h>
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#include <linux/ceph/messenger.h>
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#include "auth_none.h"
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#include "auth_x.h"
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/*
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* get protocol handler
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*/
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static u32 supported_protocols[] = {
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CEPH_AUTH_NONE,
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CEPH_AUTH_CEPHX
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};
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static int ceph_auth_init_protocol(struct ceph_auth_client *ac, int protocol)
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{
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switch (protocol) {
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case CEPH_AUTH_NONE:
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return ceph_auth_none_init(ac);
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case CEPH_AUTH_CEPHX:
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return ceph_x_init(ac);
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default:
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return -ENOENT;
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}
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}
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/*
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* setup, teardown.
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*/
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struct ceph_auth_client *ceph_auth_init(const char *name, const struct ceph_crypto_key *key)
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{
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struct ceph_auth_client *ac;
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int ret;
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dout("auth_init name '%s'\n", name);
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ret = -ENOMEM;
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ac = kzalloc(sizeof(*ac), GFP_NOFS);
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if (!ac)
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goto out;
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mutex_init(&ac->mutex);
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ac->negotiating = true;
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if (name)
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ac->name = name;
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else
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ac->name = CEPH_AUTH_NAME_DEFAULT;
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dout("auth_init name %s\n", ac->name);
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ac->key = key;
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return ac;
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out:
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return ERR_PTR(ret);
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}
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void ceph_auth_destroy(struct ceph_auth_client *ac)
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{
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dout("auth_destroy %p\n", ac);
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if (ac->ops)
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ac->ops->destroy(ac);
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kfree(ac);
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}
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/*
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* Reset occurs when reconnecting to the monitor.
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*/
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void ceph_auth_reset(struct ceph_auth_client *ac)
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{
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mutex_lock(&ac->mutex);
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dout("auth_reset %p\n", ac);
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if (ac->ops && !ac->negotiating)
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ac->ops->reset(ac);
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ac->negotiating = true;
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mutex_unlock(&ac->mutex);
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}
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int ceph_entity_name_encode(const char *name, void **p, void *end)
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{
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int len = strlen(name);
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if (*p + 2*sizeof(u32) + len > end)
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return -ERANGE;
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ceph_encode_32(p, CEPH_ENTITY_TYPE_CLIENT);
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ceph_encode_32(p, len);
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ceph_encode_copy(p, name, len);
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return 0;
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}
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/*
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* Initiate protocol negotiation with monitor. Include entity name
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* and list supported protocols.
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*/
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int ceph_auth_build_hello(struct ceph_auth_client *ac, void *buf, size_t len)
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{
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struct ceph_mon_request_header *monhdr = buf;
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void *p = monhdr + 1, *end = buf + len, *lenp;
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int i, num;
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int ret;
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mutex_lock(&ac->mutex);
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dout("auth_build_hello\n");
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monhdr->have_version = 0;
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monhdr->session_mon = cpu_to_le16(-1);
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monhdr->session_mon_tid = 0;
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ceph_encode_32(&p, 0); /* no protocol, yet */
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lenp = p;
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p += sizeof(u32);
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ceph_decode_need(&p, end, 1 + sizeof(u32), bad);
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ceph_encode_8(&p, 1);
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num = ARRAY_SIZE(supported_protocols);
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ceph_encode_32(&p, num);
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ceph_decode_need(&p, end, num * sizeof(u32), bad);
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for (i = 0; i < num; i++)
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ceph_encode_32(&p, supported_protocols[i]);
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ret = ceph_entity_name_encode(ac->name, &p, end);
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if (ret < 0)
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goto out;
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ceph_decode_need(&p, end, sizeof(u64), bad);
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ceph_encode_64(&p, ac->global_id);
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ceph_encode_32(&lenp, p - lenp - sizeof(u32));
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ret = p - buf;
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out:
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mutex_unlock(&ac->mutex);
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return ret;
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bad:
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ret = -ERANGE;
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goto out;
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}
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static int ceph_build_auth_request(struct ceph_auth_client *ac,
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void *msg_buf, size_t msg_len)
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{
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struct ceph_mon_request_header *monhdr = msg_buf;
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void *p = monhdr + 1;
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void *end = msg_buf + msg_len;
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int ret;
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monhdr->have_version = 0;
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monhdr->session_mon = cpu_to_le16(-1);
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monhdr->session_mon_tid = 0;
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ceph_encode_32(&p, ac->protocol);
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ret = ac->ops->build_request(ac, p + sizeof(u32), end);
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if (ret < 0) {
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pr_err("error %d building auth method %s request\n", ret,
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ac->ops->name);
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goto out;
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}
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dout(" built request %d bytes\n", ret);
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ceph_encode_32(&p, ret);
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ret = p + ret - msg_buf;
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out:
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return ret;
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}
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/*
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* Handle auth message from monitor.
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*/
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int ceph_handle_auth_reply(struct ceph_auth_client *ac,
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void *buf, size_t len,
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void *reply_buf, size_t reply_len)
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{
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void *p = buf;
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void *end = buf + len;
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int protocol;
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s32 result;
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u64 global_id;
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void *payload, *payload_end;
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int payload_len;
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char *result_msg;
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int result_msg_len;
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int ret = -EINVAL;
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mutex_lock(&ac->mutex);
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dout("handle_auth_reply %p %p\n", p, end);
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ceph_decode_need(&p, end, sizeof(u32) * 3 + sizeof(u64), bad);
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protocol = ceph_decode_32(&p);
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result = ceph_decode_32(&p);
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global_id = ceph_decode_64(&p);
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payload_len = ceph_decode_32(&p);
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payload = p;
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p += payload_len;
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ceph_decode_need(&p, end, sizeof(u32), bad);
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result_msg_len = ceph_decode_32(&p);
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result_msg = p;
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p += result_msg_len;
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if (p != end)
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goto bad;
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dout(" result %d '%.*s' gid %llu len %d\n", result, result_msg_len,
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result_msg, global_id, payload_len);
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payload_end = payload + payload_len;
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if (global_id && ac->global_id != global_id) {
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dout(" set global_id %lld -> %lld\n", ac->global_id, global_id);
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ac->global_id = global_id;
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}
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if (ac->negotiating) {
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/* server does not support our protocols? */
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if (!protocol && result < 0) {
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ret = result;
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goto out;
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}
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/* set up (new) protocol handler? */
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if (ac->protocol && ac->protocol != protocol) {
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ac->ops->destroy(ac);
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ac->protocol = 0;
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ac->ops = NULL;
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}
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if (ac->protocol != protocol) {
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ret = ceph_auth_init_protocol(ac, protocol);
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if (ret) {
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pr_err("error %d on auth protocol %d init\n",
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ret, protocol);
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goto out;
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}
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}
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ac->negotiating = false;
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}
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ret = ac->ops->handle_reply(ac, result, payload, payload_end);
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if (ret == -EAGAIN) {
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ret = ceph_build_auth_request(ac, reply_buf, reply_len);
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} else if (ret) {
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pr_err("auth method '%s' error %d\n", ac->ops->name, ret);
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}
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out:
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mutex_unlock(&ac->mutex);
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return ret;
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bad:
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pr_err("failed to decode auth msg\n");
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ret = -EINVAL;
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goto out;
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}
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int ceph_build_auth(struct ceph_auth_client *ac,
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void *msg_buf, size_t msg_len)
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{
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int ret = 0;
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mutex_lock(&ac->mutex);
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if (!ac->protocol)
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ret = ceph_auth_build_hello(ac, msg_buf, msg_len);
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else if (ac->ops->should_authenticate(ac))
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ret = ceph_build_auth_request(ac, msg_buf, msg_len);
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mutex_unlock(&ac->mutex);
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return ret;
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}
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int ceph_auth_is_authenticated(struct ceph_auth_client *ac)
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{
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int ret = 0;
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mutex_lock(&ac->mutex);
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if (ac->ops)
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ret = ac->ops->is_authenticated(ac);
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mutex_unlock(&ac->mutex);
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return ret;
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}
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EXPORT_SYMBOL(ceph_auth_is_authenticated);
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int ceph_auth_create_authorizer(struct ceph_auth_client *ac,
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int peer_type,
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struct ceph_auth_handshake *auth)
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{
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int ret = 0;
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mutex_lock(&ac->mutex);
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if (ac->ops && ac->ops->create_authorizer)
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ret = ac->ops->create_authorizer(ac, peer_type, auth);
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mutex_unlock(&ac->mutex);
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return ret;
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}
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EXPORT_SYMBOL(ceph_auth_create_authorizer);
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void ceph_auth_destroy_authorizer(struct ceph_auth_client *ac,
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struct ceph_authorizer *a)
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{
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mutex_lock(&ac->mutex);
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if (ac->ops && ac->ops->destroy_authorizer)
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ac->ops->destroy_authorizer(ac, a);
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mutex_unlock(&ac->mutex);
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}
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EXPORT_SYMBOL(ceph_auth_destroy_authorizer);
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int ceph_auth_update_authorizer(struct ceph_auth_client *ac,
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int peer_type,
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struct ceph_auth_handshake *a)
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{
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int ret = 0;
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mutex_lock(&ac->mutex);
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if (ac->ops && ac->ops->update_authorizer)
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ret = ac->ops->update_authorizer(ac, peer_type, a);
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mutex_unlock(&ac->mutex);
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return ret;
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}
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EXPORT_SYMBOL(ceph_auth_update_authorizer);
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int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac,
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struct ceph_authorizer *a, size_t len)
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{
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int ret = 0;
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mutex_lock(&ac->mutex);
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if (ac->ops && ac->ops->verify_authorizer_reply)
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ret = ac->ops->verify_authorizer_reply(ac, a, len);
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mutex_unlock(&ac->mutex);
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return ret;
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}
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EXPORT_SYMBOL(ceph_auth_verify_authorizer_reply);
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void ceph_auth_invalidate_authorizer(struct ceph_auth_client *ac, int peer_type)
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{
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mutex_lock(&ac->mutex);
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if (ac->ops && ac->ops->invalidate_authorizer)
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ac->ops->invalidate_authorizer(ac, peer_type);
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mutex_unlock(&ac->mutex);
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}
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EXPORT_SYMBOL(ceph_auth_invalidate_authorizer);
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