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Diffstat (limited to 'xlators/nfs/lib/src/rpcsvc.h')
| -rw-r--r-- | xlators/nfs/lib/src/rpcsvc.h | 728 |
1 files changed, 0 insertions, 728 deletions
diff --git a/xlators/nfs/lib/src/rpcsvc.h b/xlators/nfs/lib/src/rpcsvc.h deleted file mode 100644 index 4e7c81845..000000000 --- a/xlators/nfs/lib/src/rpcsvc.h +++ /dev/null @@ -1,728 +0,0 @@ -/* - Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU Affero General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Affero General Public License for more details. - - You should have received a copy of the GNU Affero General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ - -#ifndef _NFS_RPCSVC_H -#define _NFS_RPCSVC_H - - -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#include "event.h" -#include "logging.h" -#include "dict.h" -#include "mem-pool.h" -#include "list.h" -#include "iobuf.h" -#include "xdr-rpc.h" -#include "glusterfs.h" -#include "xlator.h" - -#include <pthread.h> -#include <sys/uio.h> - -#ifdef GF_DARWIN_HOST_OS -#include <nfs/rpcv2.h> -#define NGRPS RPCAUTH_UNIXGIDS -#endif - -#define GF_RPCSVC "nfsrpc" -#define RPCSVC_THREAD_STACK_SIZE ((size_t)(1024 * GF_UNIT_KB)) - -#define RPCSVC_DEFAULT_MEMFACTOR 15 -#define RPCSVC_EVENTPOOL_SIZE_MULT 1024 -#define RPCSVC_POOLCOUNT_MULT 35 -#define RPCSVC_CONN_READ (128 * GF_UNIT_KB) -#define RPCSVC_PAGE_SIZE (128 * GF_UNIT_KB) - -/* Defines for RPC record and fragment assembly */ - -#define RPCSVC_FRAGHDR_SIZE 4 /* 4-byte RPC fragment header size */ - -/* Given the 4-byte fragment header, returns non-zero if this fragment - * is the last fragment for the RPC record being assemebled. - * RPC Record marking standard defines a 32 bit value as the fragment - * header with the MSB signifying whether the fragment is the last - * fragment for the record being asembled. - */ -#define RPCSVC_LASTFRAG(fraghdr) ((uint32_t)(fraghdr & 0x80000000U)) - -/* Given the 4-byte fragment header, extracts the bits that contain - * the fragment size. - */ -#define RPCSVC_FRAGSIZE(fraghdr) ((uint32_t)(fraghdr & 0x7fffffffU)) - -/* RPC Record States */ -#define RPCSVC_READ_FRAGHDR 1 -#define RPCSVC_READ_FRAG 2 -/* The size in bytes, if crossed by a fragment will be handed over to the - * vectored actor so that it can allocate its buffers the way it wants. - * In our RPC layer, we assume that vectored RPC requests/records are never - * spread over multiple RPC fragments since that prevents us from determining - * whether the record should be handled in RPC layer completely or handed to - * the vectored handler. - */ -#define RPCSVC_VECTORED_FRAGSZ 4096 -#define RPCSVC_VECTOR_READCRED 1003 -#define RPCSVC_VECTOR_READVERFSZ 1004 -#define RPCSVC_VECTOR_READVERF 1005 -#define RPCSVC_VECTOR_IGNORE 1006 -#define RPCSVC_VECTOR_READVEC 1007 -#define RPCSVC_VECTOR_READPROCHDR 1008 - -#define nfs_rpcsvc_record_vectored_baremsg(rs) (((rs)->state == RPCSVC_READ_FRAG) && (rs)->vecstate == 0) -#define nfs_rpcsvc_record_vectored_cred(rs) ((rs)->vecstate == RPCSVC_VECTOR_READCRED) -#define nfs_rpcsvc_record_vectored_verfsz(rs) ((rs)->vecstate == RPCSVC_VECTOR_READVERFSZ) -#define nfs_rpcsvc_record_vectored_verfread(rs) ((rs)->vecstate == RPCSVC_VECTOR_READVERF) -#define nfs_rpcsvc_record_vectored_ignore(rs) ((rs)->vecstate == RPCSVC_VECTOR_IGNORE) -#define nfs_rpcsvc_record_vectored_readvec(rs) ((rs)->vecstate == RPCSVC_VECTOR_READVEC) -#define nfs_rpcsvc_record_vectored_readprochdr(rs) ((rs)->vecstate == RPCSVC_VECTOR_READPROCHDR) -#define nfs_rpcsvc_record_vectored(rs) ((rs)->fragsize > RPCSVC_VECTORED_FRAGSZ) -/* Includes bytes up to and including the credential length field. The credlen - * will be followed by @credlen bytes of credential data which will have to be - * read separately by the vectored reader. After the credentials comes the - * verifier which will also have to be read separately including the 8 bytes of - * verf flavour and verflen. - */ -#define RPCSVC_BARERPC_MSGSZ 32 -#define nfs_rpcsvc_record_readfraghdr(rs) ((rs)->state == RPCSVC_READ_FRAGHDR) -#define nfs_rpcsvc_record_readfrag(rs) ((rs)->state == RPCSVC_READ_FRAG) - -#define nfs_rpcsvc_conn_rpcsvc(conn) ((conn)->stage->svc) -#define RPCSVC_LOWVERS 2 -#define RPCSVC_HIGHVERS 2 - -typedef struct rpc_svc_program rpcsvc_program_t; -/* A Stage is the event handler thread together with - * the connections being served by this thread. - * It is called a stage because all the actors, i.e, protocol actors, - * defined by higher level users of the RPC layer, are executed here. - */ -typedef struct rpc_svc_stage_context { - pthread_t tid; - struct event_pool *eventpool; /* Per-stage event-pool */ - void *svc; /* Ref to the rpcsvc_t */ -} rpcsvc_stage_t; - - -/* RPC Records and Fragments assembly state. - * This is per-connection state that is used to determine - * how much data has come in, how much more needs to be read - * and where it needs to be read. - * - * All this state is then used to re-assemble network buffers into - * RPC fragments, which are then re-assembled into RPC records. - * - * See RFC 1831: "RPC: Remote Procedure Call Protocol Specification Version 2", - * particularly the section on Record Marking Standard. - */ -typedef struct rpcsvc_record_state { - - /* Pending messages storage - * This memory area is currently being used to assemble - * the latest RPC record. - * - * Note that this buffer contains the data other than the - * fragment headers received from the network. This is so that we can - * directly pass this buffer to higher layers without requiring to - * perform memory copies and marshalling of data. - */ - struct iobuf *activeiob; - - struct iobuf *vectoriob; - /* The pointer into activeiob memory, into which will go the - * contents from the next read from the network. - */ - char *fragcurrent; - - /* Size of the currently incomplete RPC fragment. - * This is filled in when the fragment header comes in. - * Even though only the 31 least significant bits are used from the - * fragment header, we use a 32 bit variable to store the size. - */ - uint32_t fragsize; - - /* The fragment header is always read in here so that - * the RPC messages contained in a RPC records can be processed - * separately without copying them out of the activeiob above. - */ - char fragheader[RPCSVC_FRAGHDR_SIZE]; - char *hdrcurrent; - - /* Bytes remaining to come in for the current fragment. */ - uint32_t remainingfrag; - - /* It is possible for the frag header to be split over separate - * read calls, so we need to keep track of how much is left. - */ - uint32_t remainingfraghdr; - - /* Record size, the total size of the RPC record, i.e. the total - * of all fragment sizes received till now. Does not include the size - * of a partial fragment which is continuing to be assembled right now. - */ - int recordsize; - - /* Current state of the record */ - int state; - - /* Current state of the vectored reading process. */ - int vecstate; - - /* Set to non-zero when the currently partial or complete fragment is - * the last fragment being received for the current RPC record. - */ - uint32_t islastfrag; - -} rpcsvc_record_state_t; - - -#define RPCSVC_CONNSTATE_CONNECTED 1 -#define RPCSVC_CONNSTATE_DISCONNECTED 2 - -#define nfs_rpcsvc_conn_check_active(conn) ((conn)->connstate==RPCSVC_CONNSTATE_CONNECTED) - -typedef struct rpcsvc_request rpcsvc_request_t; -/* Contains the state for each connection that is used for transmitting and - * receiving RPC messages. - * - * There is also an eventidx because each connection's fd is added to the event - * pool of the stage to which a connection belongs. - * Anything that can be accessed by a RPC program must be synced through - * connlock. - */ -typedef struct rpc_conn_state { - - /* Transport or connection state */ - - /* Once we start working on RDMA support, this TCP specific state will - * have to be abstracted away. - */ - int sockfd; - int eventidx; - int windowsize; - - /* Reference to the stage which is handling this - * connection. - */ - rpcsvc_stage_t *stage; - - /* RPC Records and Fragments assembly state. - * All incoming data is staged here before being - * called a full RPC message. - */ - rpcsvc_record_state_t rstate; - - /* It is possible that a client disconnects while - * the higher layer RPC service is busy in a call. - * In this case, we cannot just free the conn - * structure, since the higher layer service could - * still have a reference to it. - * The refcount avoids freeing until all references - * have been given up, although the connection is clos()ed at the first - * call to unref. - */ - int connref; - pthread_mutex_t connlock; - int connstate; - - /* List of buffers awaiting transmission */ - /* Accesses to txbufs between multiple threads calling - * rpcsvc_submit is synced through connlock. Prefer spinlock over - * mutex because this is a low overhead op that needs simple - * appending to the tx list. - */ - struct list_head txbufs; - - /* Mem pool for the txbufs above. */ - struct mem_pool *txpool; - - /* Memory pool for rpcsvc_request_t */ - struct mem_pool *rxpool; - - /* The request which hasnt yet been handed to the RPC program because - * this request is being treated as a vector request and so needs some - * more data to be got from the network. - */ - rpcsvc_request_t *vectoredreq; -} rpcsvc_conn_t; - - -#define RPCSVC_MAX_AUTH_BYTES 400 -typedef struct rpcsvc_auth_data { - int flavour; - int datalen; - char authdata[RPCSVC_MAX_AUTH_BYTES]; -} rpcsvc_auth_data_t; - -#define nfs_rpcsvc_auth_flavour(au) ((au).flavour) - -/* The container for the RPC call handed up to an actor. - * Dynamically allocated. Lives till the call reply is completely - * transmitted. - * */ -struct rpcsvc_request { - /* Connection over which this request came. */ - rpcsvc_conn_t *conn; - - /* The identifier for the call from client. - * Needed to pair the reply with the call. - */ - uint32_t xid; - - int prognum; - - int progver; - - int procnum; - /* Uid and gid filled by the rpc-auth module during the authentication - * phase. - */ - uid_t uid; - gid_t gid; - - /* Might want to move this to AUTH_UNIX specifix state since this array - * is not available for every authenticatino scheme. - */ - gid_t auxgids[NGRPS]; - int auxgidcount; - - - /* The RPC message payload, contains the data required - * by the program actors. This is the buffer that will need to - * be de-xdred by the actor. - */ - struct iovec msg; - - /* The full message buffer allocated to store the RPC headers. - * This buffer is ref'd when allocated why RPC svc and unref'd after - * the buffer is handed to the actor. That means if the actor or any - * higher layer wants to keep this buffer around, they too must ref it - * right after entering the program actor. - */ - struct iobuf *recordiob; - - /* Status of the RPC call, whether it was accepted or denied. */ - int rpc_stat; - - /* In case, the call was denied, the RPC error is stored here - * till the reply is sent. - */ - int rpc_err; - - /* In case the failure happened because of an authentication problem - * , this value needs to be assigned the correct auth error number. - */ - int auth_err; - - /* There can be cases of RPC requests where the reply needs to - * be built from multiple sources. For eg. where even the NFS reply can - * contain a payload, as in the NFSv3 read reply. Here the RPC header - * ,NFS header and the read data are brought together separately from - * different buffers, so we need to stage the buffers temporarily here - * before all of them get added to the connection's transmission list. - */ - struct list_head txlist; - - /* While the reply record is being built, this variable keeps track - * of how many bytes have been added to the record. - */ - size_t payloadsize; - - /* The credentials extracted from the rpc request */ - rpcsvc_auth_data_t cred; - - /* The verified extracted from the rpc request. In request side - * processing this contains the verifier sent by the client, on reply - * side processing, it is filled with the verified that will be - * sent to the client. - */ - rpcsvc_auth_data_t verf; - - /* Container for a RPC program wanting to store a temp - * request-specific item. - */ - void *private; - - /* To save a ref to the program for which this request is. */ - rpcsvc_program_t *program; -}; - -#define nfs_rpcsvc_request_program(req) ((rpcsvc_program_t *)((req)->program)) -#define nfs_rpcsvc_request_program_private(req) ((req)->program->private) -#define nfs_rpcsvc_request_conn(req) (req)->conn -#define nfs_rpcsvc_program_xlator(prg) ((prg)->actorxl) -#define nfs_rpcsvc_request_actorxl(rq) (nfs_rpcsvc_request_program(rq))->actorxl -#define nfs_rpcsvc_request_accepted(req) ((req)->rpc_stat == MSG_ACCEPTED) -#define nfs_rpcsvc_request_accepted_success(req) ((req)->rpc_err == SUCCESS) -#define nfs_rpcsvc_request_uid(req) ((req)->uid) -#define nfs_rpcsvc_request_gid(req) ((req)->gid) -#define nfs_rpcsvc_stage_service(stg) ((rpcsvc_t *)((stg)->svc)) -#define nfs_rpcsvc_conn_stage(conn) ((conn)->stage) -#define nfs_rpcsvc_request_service(req) (nfs_rpcsvc_stage_service(nfs_rpcsvc_conn_stage(nfs_rpcsvc_request_conn(req)))) -#define nfs_rpcsvc_request_prog_minauth(req) (nfs_rpcsvc_request_program(req)->min_auth) -#define nfs_rpcsvc_request_cred_flavour(req) (nfs_rpcsvc_auth_flavour(req->cred)) -#define nfs_rpcsvc_request_verf_flavour(req) (nfs_rpcsvc_auth_flavour(req->verf)) - -#define nfs_rpcsvc_request_uid(req) ((req)->uid) -#define nfs_rpcsvc_request_gid(req) ((req)->gid) -#define nfs_rpcsvc_request_private(req) ((req)->private) -#define nfs_rpcsvc_request_xid(req) ((req)->xid) -#define nfs_rpcsvc_request_set_private(req,prv) (req)->private = (void *)(prv) -#define nfs_rpcsvc_request_record_iob(rq) ((rq)->recordiob) -#define nfs_rpcsvc_request_record_ref(req) (iobuf_ref ((req)->recordiob)) -#define nfs_rpcsvc_request_record_unref(req) (iobuf_unref ((req)->recordiob)) -#define nfs_rpcsvc_request_procnum(rq) ((rq)->procnum) - - -#define RPCSVC_ACTOR_SUCCESS 0 -#define RPCSVC_ACTOR_ERROR (-1) -#define RPCSVC_ACTOR_IGNORE (-2) - -/* Functor for every type of protocol actor - * must be defined like this. - * - * See the request structure for info on how to handle the request - * in the program actor. - * - * On successful santify checks inside the actor, it should return - * RPCSVC_ACTOR_SUCCESS. - * On an error, on which the RPC layer is expected to return a reply, the actor - * should return RPCSVC_ACTOR_ERROR. - * - */ -typedef int (*rpcsvc_actor) (rpcsvc_request_t *req); -typedef int (*rpcsvc_vector_actor) (rpcsvc_request_t *req, struct iobuf *iob); -typedef int (*rpcsvc_vector_sizer) (rpcsvc_request_t *req, ssize_t *readsize, - int *newiob); - -/* Every protocol actor will also need to specify the function the RPC layer - * will use to serialize or encode the message into XDR format just before - * transmitting on the connection. - */ -typedef void *(*rpcsvc_encode_reply) (void *msg); - -/* Once the reply has been transmitted, the message will have to be de-allocated - * , so every actor will need to provide a function that deallocates the message - * it had allocated as a response. - */ -typedef void (*rpcsvc_deallocate_reply) (void *msg); - - -#define RPCSVC_NAME_MAX 32 -/* The descriptor for each procedure/actor that runs - * over the RPC service. - */ -typedef struct rpc_svc_actor_desc { - char procname[RPCSVC_NAME_MAX]; - int procnum; - rpcsvc_actor actor; - - /* Handler for cases where the RPC requests fragments are large enough - * to benefit from being decoded into aligned memory addresses. While - * decoding the request in a non-vectored manner, due to the nature of - * the XDR scheme, RPC cannot guarantee memory aligned addresses for - * the resulting message-specific structures. Allowing a specialized - * handler for letting the RPC program read the data from the network - * directly into its alligned buffers. - */ - rpcsvc_vector_actor vector_actor; - rpcsvc_vector_sizer vector_sizer; - -} rpcsvc_actor_t; - -/* Describes a program and its version along with the function pointers - * required to handle the procedures/actors of each program/version. - * Never changed ever by any thread so no need for a lock. - */ -struct rpc_svc_program { - struct list_head proglist; - char progname[RPCSVC_NAME_MAX]; - int prognum; - int progver; - uint16_t progport; /* Registered with portmap */ - int progaddrfamily; /* AF_INET or AF_INET6 */ - char *proghost; /* Bind host, can be NULL */ - rpcsvc_actor_t *actors; /* All procedure handlers */ - int numactors; /* Num actors in actor array */ - int proghighvers; /* Highest ver for program - supported by the system. */ - int proglowvers; /* Lowest ver */ - - /* Program specific state handed to actors */ - void *private; - - /* An integer that identifies the min auth strength that is required - * by this protocol, for eg. MOUNT3 needs AUTH_UNIX at least. - * See RFC 1813, Section 5.2.1. - */ - int min_auth; - - /* The translator in whose context the actor must execute. This is - * needed to setup THIS for memory accounting to work correctly. - */ - xlator_t *actorxl; -}; - - -/* Contains global state required for all the RPC services. - */ -typedef struct rpc_svc_state { - - /* Contains the list of rpcsvc_stage_t - * list of (program, version) handlers. - * other options. - */ - - /* At this point, lock is not used to protect anything. Later, it'll - * be used for protecting stages. - */ - pthread_mutex_t rpclock; - - /* This is the first stage that is inited, so that any RPC based - * services that do not need multi-threaded support can just use the - * service right away. This is not added to the stages list - * declared later. - * This is also the stage over which all service listeners are run. - */ - rpcsvc_stage_t *defaultstage; - - /* When we have multi-threaded RPC support, we'll use this to link - * to the multiple Stages. - */ - struct list_head stages; /* All stages */ - - unsigned int memfactor; - - /* List of the authentication schemes available. */ - struct list_head authschemes; - - /* Reference to the options */ - dict_t *options; - - /* Allow insecure ports. */ - int allow_insecure; - - glusterfs_ctx_t *ctx; - - gf_boolean_t register_portmap; - - struct list_head allprograms; -} rpcsvc_t; - - -/* All users of RPC services should use this API to register their - * procedure handlers. - */ -extern int -nfs_rpcsvc_program_register (rpcsvc_t *svc, rpcsvc_program_t program); - -extern int -nfs_rpcsvc_program_unregister (rpcsvc_t *svc, rpcsvc_program_t program); - -/* Inits the global RPC service data structures. - * Called in main. - */ -extern rpcsvc_t * -nfs_rpcsvc_init (glusterfs_ctx_t *ctx, dict_t *options); - - -extern int -nfs_rpcsvc_submit_message (rpcsvc_request_t * req, struct iovec msg, - struct iobuf *iob); - -int -nfs_rpcsvc_submit_generic (rpcsvc_request_t *req, struct iovec msgvec, - struct iobuf *msg); -#define nfs_rpcsvc_record_currentfrag_addr(rs) ((rs)->fragcurrent) -#define nfs_rpcsvc_record_currenthdr_addr(rs) ((rs)->hdrcurrent) - -#define nfs_rpcsvc_record_update_currentfrag(rs, size) \ - do { \ - (rs)->fragcurrent += size; \ - } while (0) \ - -#define nfs_rpcsvc_record_update_currenthdr(rs, size) \ - do { \ - (rs)->hdrcurrent += size; \ - } while (0) \ - - -/* These are used to differentiate between multiple txbufs which form - * a single RPC record. For eg, one purpose we use these for is to - * prevent dividing a RPC record over multiple TCP segments. Multiple - * TCP segments are possible for a single RPC record because we generally do not - * have control over how the kernel's TCP segments the buffers when putting - * them on the wire. So, on Linux, we use these to set TCP_CORK to create - * a single TCP segment from multiple txbufs that are part of the same RPC - * record. This improves network performance by reducing tiny message - * transmissions. - */ -#define RPCSVC_TXB_FIRST 0x1 -#define RPCSVC_TXB_LAST 0x2 - -/* The list of buffers appended to a connection's pending - * transmission list. - */ -typedef struct rpcsvc_txbuf { - struct list_head txlist; - /* The iobuf which contains the full message to be transmitted */ - struct iobuf *iob; - - /* For vectored messages from an RPC program, we need to be able - * maintain a ref to an iobuf which we do not have access to directly - * except through the iobref which in turn could've been passed to - * the RPC program by a higher layer. - * - * So either the iob is defined or iobref is defined for a reply, - * never both. - */ - struct iobref *iobref; - /* In order to handle non-blocking writes, we'll need to keep track of - * how much data from an iobuf has been written and where the next - * transmission needs to start from. This iov.base points to the base of - * the iobuf, iov.len is the size of iobuf being used for the message - * from the total size in the iobuf. - */ - struct iovec buf; - /* offset is the point from where the next transmission for this buffer - * should start. - */ - size_t offset; - - /* This is a special field that tells us what kind of transmission - * behaviour to provide to a particular buffer. - * See the RPCSVC_TXB_* defines for more info. - */ - int txbehave; -} rpcsvc_txbuf_t; - -extern int -nfs_rpcsvc_error_reply (rpcsvc_request_t *req); - -#define RPCSVC_PEER_STRLEN 1024 -#define RPCSVC_AUTH_ACCEPT 1 -#define RPCSVC_AUTH_REJECT 2 -#define RPCSVC_AUTH_DONTCARE 3 - -extern int -nfs_rpcsvc_conn_peername (rpcsvc_conn_t *conn, char *hostname, int hostlen); - -extern int -nfs_rpcsvc_conn_peeraddr (rpcsvc_conn_t *conn, char *addrstr, int addrlen, - struct sockaddr *returnsa, socklen_t sasize); - -extern int -nfs_rpcsvc_conn_peer_check (dict_t *options, char *volname,rpcsvc_conn_t *conn); - -extern int -nfs_rpcsvc_conn_privport_check (rpcsvc_t *svc, char *volname, - rpcsvc_conn_t *conn); -#define nfs_rpcsvc_request_seterr(req, err) (req)->rpc_err = err -#define nfs_rpcsvc_request_set_autherr(req, err) \ - do { \ - (req)->auth_err = err; \ - (req)->rpc_stat = MSG_DENIED; \ - } while (0) \ - -extern void -nfs_rpcsvc_conn_deinit (rpcsvc_conn_t *conn); -extern void nfs_rpcsvc_conn_ref (rpcsvc_conn_t *conn); -extern void nfs_rpcsvc_conn_unref (rpcsvc_conn_t *conn); - -extern int nfs_rpcsvc_submit_vectors (rpcsvc_request_t *req); - -extern int nfs_rpcsvc_request_attach_vector (rpcsvc_request_t *req, - struct iovec msgvec, - struct iobuf *iob, - struct iobref *ioref, - int finalvector); -extern int -nfs_rpcsvc_request_attach_vectors (rpcsvc_request_t *req, struct iovec *payload, - int vcount, struct iobref *piobref); - -typedef int (*auth_init_conn) (rpcsvc_conn_t *conn, void *priv); -typedef int (*auth_init_request) (rpcsvc_request_t *req, void *priv); -typedef int (*auth_request_authenticate) (rpcsvc_request_t *req, void *priv); - -/* This structure needs to be registered by every authentication scheme. - * Our authentication schemes are stored per connection because - * each connection will end up using a different authentication scheme. - */ -typedef struct rpcsvc_auth_ops { - auth_init_conn conn_init; - auth_init_request request_init; - auth_request_authenticate authenticate; -} rpcsvc_auth_ops_t; - -typedef struct rpcsvc_auth_flavour_desc { - char authname[RPCSVC_NAME_MAX]; - int authnum; - rpcsvc_auth_ops_t *authops; - void *authprivate; -} rpcsvc_auth_t; - -typedef void * (*rpcsvc_auth_initer_t) (rpcsvc_t *svc, dict_t *options); - -struct rpcsvc_auth_list { - struct list_head authlist; - rpcsvc_auth_initer_t init; - /* Should be the name with which we identify the auth scheme given - * in the volfile options. - * This should be different from the authname in rpc_auth_t - * in way that makes it easier to specify this scheme in the volfile. - * This is because the technical names of the schemes can be a bit - * arcane. - */ - char name[RPCSVC_NAME_MAX]; - rpcsvc_auth_t *auth; - int enable; -}; - -extern int -nfs_rpcsvc_auth_request_init (rpcsvc_request_t *req); - -extern int -nfs_rpcsvc_auth_init (rpcsvc_t *svc, dict_t *options); - -extern int -nfs_rpcsvc_auth_conn_init (rpcsvc_conn_t *conn); - -extern int -nfs_rpcsvc_authenticate (rpcsvc_request_t *req); - -extern int -nfs_rpcsvc_auth_array (rpcsvc_t *svc, char *volname, int *autharr, int arrlen); - -/* If the request has been sent using AUTH_UNIX, this function returns the - * auxiliary gids as an array, otherwise, it returns NULL. - * Move to auth-unix specific source file when we need to modularize the - * authentication code even further to support mode auth schemes. - */ -extern gid_t * -nfs_rpcsvc_auth_unix_auxgids (rpcsvc_request_t *req, int *arrlen); - -extern int -nfs_rpcsvc_combine_gen_spec_volume_checks (int gen, int spec); - -extern char * -nfs_rpcsvc_volume_allowed (dict_t *options, char *volname); -#endif |