glusterfs.git -

diff options

Diffstat (limited to 'tests/bitrot')

0 files changed, 0 insertions, 0 deletions

n13' href='#n13'>13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427

/*
  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 _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif

#include "xlator.h"
#include "defaults.h"
#include "glusterfs.h"
#include "compat-errno.h"

#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterd-op-sm.h"

#include "glusterfs3.h"
#include "protocol-common.h"
#include "rpcsvc.h"

extern struct rpc_clnt_program glusterd3_1_mgmt_prog;
extern struct rpc_clnt_program gd_clnt_mgmt_prog;

typedef ssize_t (*gfs_serialize_t) (struct iovec outmsg, void *data);

static size_t
build_volfile_path (const char *volname, char *path,
                    size_t path_len)
{
        struct stat         stbuf       = {0,};
        int32_t             ret         = -1;
        glusterd_conf_t    *priv        = NULL;
        char               *vol         = NULL;
        char               *dup_volname = NULL;
        char               *free_ptr    = NULL;
        char               *tmp         = NULL;
        glusterd_volinfo_t *volinfo     = NULL;

        priv    = THIS->private;

        if (volname[0] != '/') {
                /* Normal behavior */
                dup_volname = gf_strdup (volname);
        } else {
                /* Bringing in NFS like behavior for mount command,    */
                /* With this, one can mount a volume with below cmd    */
                /* bash# mount -t glusterfs server:/volume /mnt/pnt    */
                dup_volname = gf_strdup (&volname[1]);
        }

        free_ptr = dup_volname;

        ret = glusterd_volinfo_find (dup_volname, &volinfo);
        if (ret) {
                /* Split the volume name */
                vol = strtok_r (dup_volname, ".", &tmp);
                if (!vol)
                        goto out;
                ret = glusterd_volinfo_find (vol, &volinfo);
                if (ret)
                        goto out;
        }
        ret = snprintf (path, path_len, "%s/vols/%s/%s.vol",
                        priv->workdir, volinfo->volname, volname);
        if (ret == -1)
                goto out;

        ret = stat (path, &stbuf);
        if ((ret == -1) && (errno == ENOENT)) {
                ret = snprintf (path, path_len, "%s/vols/%s/%s-fuse.vol",
                                priv->workdir, volinfo->volname, volname);
                ret = stat (path, &stbuf);
        }
        if ((ret == -1) && (errno == ENOENT)) {
                ret = snprintf (path, path_len, "%s/vols/%s/%s-tcp.vol",
                                priv->workdir, volinfo->volname, volname);
        }

        ret = 1;
out:
        if (free_ptr)
                GF_FREE (free_ptr);
        return ret;
}

static int
xdr_to_glusterfs_req (rpcsvc_request_t *req, void *arg, gfs_serialize_t sfunc)
{
        int                     ret = -1;

        if (!req)
                return -1;

        ret = sfunc (req->msg[0], arg);

        if (ret > 0)
                ret = 0;

        return ret;
}


int
server_getspec (rpcsvc_request_t *req)
{
        int32_t               ret = -1;
        int32_t               op_errno = 0;
        int32_t               spec_fd = -1;
        size_t                file_len = 0;
        char                  filename[ZR_PATH_MAX] = {0,};
        struct stat           stbuf = {0,};
        char                 *volume = NULL;
        int                   cookie = 0;

        gf_getspec_req    args = {0,};
        gf_getspec_rsp    rsp  = {0,};


        if (xdr_to_glusterfs_req (req, &args, xdr_to_getspec_req)) {
                //failed to decode msg;
                req->rpc_err = GARBAGE_ARGS;
                goto fail;
        }

        volume = args.key;

        ret = build_volfile_path (volume, filename, sizeof (filename));

        if (ret > 0) {
                /* to allocate the proper buffer to hold the file data */
                ret = stat (filename, &stbuf);
                if (ret < 0){
                        gf_log ("glusterd", GF_LOG_ERROR,
                                "Unable to stat %s (%s)",
                                filename, strerror (errno));
                        goto fail;
                }

                spec_fd = open (filename, O_RDONLY);
                if (spec_fd < 0) {
                        gf_log ("glusterd", GF_LOG_ERROR,
                                "Unable to open %s (%s)",
                                filename, strerror (errno));
                        goto fail;
                }
                ret = file_len = stbuf.st_size;
        } else {
                op_errno = ENOENT;
        }

        if (file_len) {
                rsp.spec = CALLOC (file_len+1, sizeof (char));
                if (!rsp.spec) {
                        ret = -1;
                        op_errno = ENOMEM;
                        goto fail;
                }
                ret = read (spec_fd, rsp.spec, file_len);

                close (spec_fd);
        }

        /* convert to XDR */
fail:
        rsp.op_ret   = ret;

        if (op_errno)
                rsp.op_errno = gf_errno_to_error (op_errno);
        if (cookie)
                rsp.op_errno = cookie;

        if (!rsp.spec)
                rsp.spec = "";

        glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
                               (gd_serialize_t)xdr_serialize_getspec_rsp);
        if (args.key)
                free (args.key);//malloced by xdr
        if (rsp.spec && (strcmp (rsp.spec, "")))
                free (rsp.spec);

        return 0;
}


rpcsvc_actor_t gluster_handshake_actors[] = {
        [GF_HNDSK_NULL]      = {"NULL",      GF_HNDSK_NULL,      NULL, NULL, NULL },
        [GF_HNDSK_GETSPEC]   = {"GETSPEC",   GF_HNDSK_GETSPEC,   server_getspec, NULL, NULL },
};


struct rpcsvc_program gluster_handshake_prog = {
        .progname  = "GlusterFS Handshake",
        .prognum   = GLUSTER_HNDSK_PROGRAM,
        .progver   = GLUSTER_HNDSK_VERSION,
        .actors    = gluster_handshake_actors,
        .numactors = GF_HNDSK_MAXVALUE,
};

char *glusterd_dump_proc[GF_DUMP_MAXVALUE] = {
        [GF_DUMP_NULL] = "NULL",
        [GF_DUMP_DUMP] = "DUMP",
};

rpc_clnt_prog_t glusterd_dump_prog = {
        .progname  = "GLUSTERD-DUMP",
        .prognum   = GLUSTER_DUMP_PROGRAM,
        .progver   = GLUSTER_DUMP_VERSION,
        .procnames = glusterd_dump_proc,
};

static int
glusterd_event_connected_inject (glusterd_peerctx_t *peerctx)
{
        GF_ASSERT (peerctx);

        glusterd_friend_sm_event_t      *event = NULL;
        glusterd_probe_ctx_t            *ctx = NULL;
        int                             ret = -1;
        glusterd_peerinfo_t             *peerinfo = NULL;


        ret = glusterd_friend_sm_new_event
                        (GD_FRIEND_EVENT_CONNECTED, &event);

        if (ret) {
                gf_log ("", GF_LOG_ERROR, "Unable to get new event");
                goto out;
        }

        ctx = GF_CALLOC (1, sizeof(*ctx), gf_gld_mt_probe_ctx_t);

        if (!ctx) {
                ret = -1;
                gf_log ("", GF_LOG_ERROR, "Memory not available");
                goto out;
        }

        peerinfo = peerctx->peerinfo;
        ctx->hostname = gf_strdup (peerinfo->hostname);
        ctx->port = peerinfo->port;
        ctx->req = peerctx->args.req;

        event->peerinfo = peerinfo;
        event->ctx = ctx;

        ret = glusterd_friend_sm_inject_event (event);

        if (ret) {
                gf_log ("glusterd", GF_LOG_ERROR, "Unable to inject "
                        "EVENT_CONNECTED ret = %d", ret);
                goto out;
        }

out:
        gf_log ("", GF_LOG_DEBUG, "returning %d", ret);
        return ret;
}

int
glusterd_set_clnt_mgmt_program (glusterd_peerinfo_t *peerinfo,
                                gf_prog_detail *prog)
{
        gf_prog_detail *trav     = NULL;
        int             ret      = -1;

        if (!peerinfo || !prog)
                goto out;

        trav = prog;

        while (trav) {
                /* Select 'programs' */
                if ((gd_clnt_mgmt_prog.prognum == trav->prognum) &&
                    (gd_clnt_mgmt_prog.progver == trav->progver)) {
                        peerinfo->mgmt = &gd_clnt_mgmt_prog;
                        ret = 0;
                        /* Break here, as this gets higher priority */
                        break;
                }
                if ((glusterd3_1_mgmt_prog.prognum == trav->prognum) &&
                    (glusterd3_1_mgmt_prog.progver == trav->progver)) {
                        peerinfo->mgmt = &glusterd3_1_mgmt_prog;
                        ret = 0;
                }
                if (ret) {
                        gf_log ("", GF_LOG_DEBUG,
                                "%s (%"PRId64":%"PRId64") not supported",
                                trav->progname, trav->prognum,
                                trav->progver);
                }
                trav = trav->next;
        }

        if (!ret && peerinfo->mgmt) {
                gf_log ("", GF_LOG_INFO,
                        "Using Program %s, Num (%d), Version (%d)",
                        peerinfo->mgmt->progname, peerinfo->mgmt->prognum,
                        peerinfo->mgmt->progver);
        }

out:
        return ret;
}

int
glusterd_peer_dump_version_cbk (struct rpc_req *req, struct iovec *iov,
                                int count, void *myframe)
{
        int                  ret      = -1;
        gf_dump_rsp          rsp      = {0,};
        xlator_t            *this     = NULL;
        gf_prog_detail      *trav     = NULL;
        gf_prog_detail      *next     = NULL;
        call_frame_t        *frame    = NULL;
        glusterd_peerinfo_t *peerinfo = NULL;
        glusterd_peerctx_t  *peerctx  = NULL;

        this = THIS;
        frame = myframe;
        peerctx = frame->local;
        peerinfo = peerctx->peerinfo;

        if (-1 == req->rpc_status) {
                gf_log ("", GF_LOG_ERROR,
                        "error through RPC layer, retry again later");
                goto out;
        }

        ret = xdr_to_dump_rsp (*iov, &rsp);
        if (ret < 0) {
                gf_log ("", GF_LOG_ERROR, "failed to decode XDR");
                goto out;
        }
        if (-1 == rsp.op_ret) {
                gf_log (frame->this->name, GF_LOG_ERROR,
                        "failed to get the 'versions' from remote server");
                goto out;
        }

        /* Make sure we assign the proper program to peer */
        ret = glusterd_set_clnt_mgmt_program (peerinfo, rsp.prog);
        if (ret) {
                gf_log ("", GF_LOG_WARNING, "failed to set the mgmt program");
                goto out;
        }

        ret = default_notify (this, GF_EVENT_CHILD_UP, NULL);

        if (GD_MODE_ON == peerctx->args.mode) {
                ret = glusterd_event_connected_inject (peerctx);
                peerctx->args.req = NULL;
        } else if (GD_MODE_SWITCH_ON == peerctx->args.mode) {
                peerctx->args.mode = GD_MODE_ON;
        } else {
                gf_log ("", GF_LOG_WARNING, "unknown mode %d",
                        peerctx->args.mode);
        }

        glusterd_friend_sm ();
        glusterd_op_sm ();

        ret = 0;
out:

        /* don't use GF_FREE, buffer was allocated by libc */
        if (rsp.prog) {
                trav = rsp.prog;
                while (trav) {
                        next = trav->next;
                        free (trav->progname);
                        free (trav);
                        trav = next;
                }
        }

        frame->local = NULL;
        STACK_DESTROY (frame->root);

        if (ret != 0)
                rpc_transport_disconnect (peerinfo->rpc->conn.trans);

        return 0;
}


int
glusterd_peer_handshake (xlator_t *this, struct rpc_clnt *rpc,
                         glusterd_peerctx_t *peerctx)
{
        call_frame_t        *frame    = NULL;
        gf_dump_req          req      = {0,};
        int                  ret      = -1;

        frame = create_frame (this, this->ctx->pool);
        if (!frame)
                goto out;

        frame->local = peerctx;

        req.gfs_id = 0xcafe;

        ret = glusterd_submit_request (peerctx->peerinfo, &req, frame,
                                       &glusterd_dump_prog, GF_DUMP_DUMP,
                                       NULL, xdr_from_dump_req, this,
                                       glusterd_peer_dump_version_cbk);
out:
        return ret;
}


context:
space:
mode: