X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=support%2Fnfs%2Fconn.c;h=db9185d3b5268f8326c96a0abfc59686fb844bc9;hp=29dbb82c33dd102d3e90d0d0dcb223f7f7bc9c25;hb=612141ad76b47cb3d7ae505795d6a1ca45b77201;hpb=7f9343a38c031d9cc61a6bc7e06df519b16d1293 diff --git a/support/nfs/conn.c b/support/nfs/conn.c index 29dbb82..db9185d 100644 --- a/support/nfs/conn.c +++ b/support/nfs/conn.c @@ -19,214 +19,3 @@ #include "conn.h" -#if SIZEOF_SOCKLEN_T - 0 == 0 -#define socklen_t int -#endif - -extern int verbose; - -/* Map an NFS version into the corresponding Mountd version */ -u_long nfsvers_to_mnt(const u_long vers) -{ - static const u_long nfs_to_mnt[] = { 0, 0, 1, 3 }; - if (vers <= 3) - return nfs_to_mnt[vers]; - return 0; -} - -/* Map a Mountd version into the corresponding NFS version */ -u_long mntvers_to_nfs(const u_long vers) -{ - static const u_long mnt_to_nfs[] = { 0, 2, 2, 3 }; - if (vers <= 3) - return mnt_to_nfs[vers]; - return 0; -} - -/* - * Create a socket that is locally bound to a - * reserve or non-reserve port. For any failures, - * RPC_ANYSOCK is returned which will cause - * the RPC code to create the socket instead. - */ -int get_socket(struct sockaddr_in *saddr, u_int p_prot, int resvp, int conn) -{ - int so, cc, type; - struct sockaddr_in laddr; - socklen_t namelen = sizeof(laddr); - - type = (p_prot == IPPROTO_UDP ? SOCK_DGRAM : SOCK_STREAM); - if ((so = socket (AF_INET, type, p_prot)) < 0) { - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - if (verbose) { - fprintf(stderr, - "mount: Unable to create %s socket: errno %d (%s)\n", - p_prot == IPPROTO_UDP ? "UDP" : "TCP", - errno, strerror(errno)); - } - return RPC_ANYSOCK; - } - laddr.sin_family = AF_INET; - laddr.sin_port = 0; - laddr.sin_addr.s_addr = htonl(INADDR_ANY); - if (resvp) { - if (bindresvport(so, &laddr) < 0) { - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - if (verbose) { - fprintf(stderr, - "mount: Unable to bindresvport %s socket: errno %d (%s)\n", - p_prot == IPPROTO_UDP ? "UDP" : "TCP", - errno, strerror(errno)); - } - close(so); - return RPC_ANYSOCK; - } - } else { - cc = bind(so, (struct sockaddr *)&laddr, namelen); - if (cc < 0) { - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - if (verbose) { - fprintf(stderr, - "mount: Unable to bind to %s socket: errno %d (%s)\n", - p_prot == IPPROTO_UDP ? "UDP" : "TCP", - errno, strerror(errno)); - } - close(so); - return RPC_ANYSOCK; - } - } - if (type == SOCK_STREAM || (conn && type == SOCK_DGRAM)) { - cc = connect(so, (struct sockaddr *)saddr, namelen); - if (cc < 0) { - rpc_createerr.cf_stat = RPC_SYSTEMERROR; - rpc_createerr.cf_error.re_errno = errno; - if (verbose) { - fprintf(stderr, - "mount: Unable to connect to %s:%d, errno %d (%s)\n", - inet_ntoa(saddr->sin_addr), ntohs(saddr->sin_port), - errno, strerror(errno)); - } - close(so); - return RPC_ANYSOCK; - } - } - return so; -} - -/* - * Sigh... getport() doesn't actually check the version number. - * In order to make sure that the server actually supports the service - * we're requesting, we open and RPC client, and fire off a NULL - * RPC call. - */ -int -clnt_ping(struct sockaddr_in *saddr, const u_long prog, const u_long vers, - const u_int prot, struct sockaddr_in *caddr) -{ - CLIENT *clnt=NULL; - int sock, stat; - static char clnt_res; - struct sockaddr dissolve; - - rpc_createerr.cf_stat = stat = errno = 0; - sock = get_socket(saddr, prot, FALSE, TRUE); - if (sock == RPC_ANYSOCK) { - if (errno == ETIMEDOUT) { - /* - * TCP timeout. Bubble up the error to see - * how it should be handled. - */ - rpc_createerr.cf_stat = RPC_TIMEDOUT; - } - return 0; - } - - if (caddr) { - /* Get the address of our end of this connection */ - socklen_t len = sizeof(*caddr); - if (getsockname(sock, caddr, &len) != 0) - caddr->sin_family = 0; - } - - switch(prot) { - case IPPROTO_UDP: - /* The socket is connected (so we could getsockname successfully), - * but some servers on multi-homed hosts reply from - * the wrong address, so if we stay connected, we lose the reply. - */ - dissolve.sa_family = AF_UNSPEC; - connect(sock, &dissolve, sizeof(dissolve)); - - clnt = clntudp_bufcreate(saddr, prog, vers, - RETRY_TIMEOUT, &sock, - RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); - break; - case IPPROTO_TCP: - clnt = clnttcp_create(saddr, prog, vers, &sock, - RPCSMALLMSGSIZE, RPCSMALLMSGSIZE); - break; - } - if (!clnt) { - close(sock); - return 0; - } - memset(&clnt_res, 0, sizeof(clnt_res)); - stat = clnt_call(clnt, NULLPROC, - (xdrproc_t)xdr_void, (caddr_t)NULL, - (xdrproc_t)xdr_void, (caddr_t)&clnt_res, - TIMEOUT); - if (stat) { - clnt_geterr(clnt, &rpc_createerr.cf_error); - rpc_createerr.cf_stat = stat; - } - clnt_destroy(clnt); - close(sock); - - if (stat == RPC_SUCCESS) - return 1; - else - return 0; -} - -CLIENT *mnt_openclnt(clnt_addr_t *mnt_server, int *msock) -{ - struct sockaddr_in *mnt_saddr = &mnt_server->saddr; - struct pmap *mnt_pmap = &mnt_server->pmap; - CLIENT *clnt = NULL; - - /* contact the mount daemon via TCP */ - mnt_saddr->sin_port = htons((u_short)mnt_pmap->pm_port); - *msock = get_socket(mnt_saddr, mnt_pmap->pm_prot, TRUE, FALSE); - - switch (mnt_pmap->pm_prot) { - case IPPROTO_UDP: - clnt = clntudp_bufcreate(mnt_saddr, - mnt_pmap->pm_prog, mnt_pmap->pm_vers, - RETRY_TIMEOUT, msock, - MNT_SENDBUFSIZE, MNT_RECVBUFSIZE); - break; - case IPPROTO_TCP: - clnt = clnttcp_create(mnt_saddr, - mnt_pmap->pm_prog, mnt_pmap->pm_vers, - msock, - MNT_SENDBUFSIZE, MNT_RECVBUFSIZE); - break; - } - if (clnt) { - /* try to mount hostname:dirname */ - clnt->cl_auth = authunix_create_default(); - return clnt; - } - return NULL; -} - -void mnt_closeclnt(CLIENT *clnt, int msock) -{ - auth_destroy(clnt->cl_auth); - clnt_destroy(clnt); - close(msock); -} -