examples/fuse/clifuse.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * fusermount smb2 client
   4  * Copyright (C) Volker Lendecke 2016
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #define FUSE_USE_VERSION 26
  21 #define _FILE_OFFSET_BITS 64
  22 #include "fuse/fuse_lowlevel.h"
  23
  24 #include "source3/include/includes.h"
  25 #include "client.h"
  26 #include "trans2.h"
  27 #include "libsmb/proto.h"
  28 #include "libsmb/clirap.h"
  29 #include "libsmb/cli_smb2_fnum.h"
  30 #include "lib/util/tevent_ntstatus.h"
  31 #include "libcli/smb/smbXcli_base.h"
  32 #include "libcli/security/security.h"
  33 #include "clifuse.h"
  34
  35 struct mount_state {
  36         struct tevent_context *ev;
  37         struct cli_state *cli;
  38         bool done;
  39
  40         struct tevent_fd *fde;
  41         struct tevent_signal *signal_ev;
  42
  43         struct fuse_chan *ch;
  44         struct fuse_session *se;
  45
  46         size_t bufsize;
  47         char *buf;
  48
  49         struct idr_context *ino_ctx;
  50         TALLOC_CTX *ino_parent;
  51 };
  52
  53 struct inode_state {
  54         struct idr_context *ino_ctx;
  55         fuse_ino_t ino;
  56         char path[1];
  57 };
  58
  59 static int inode_state_destructor(struct inode_state *s);
  60
  61 static struct inode_state *inode_state_init(TALLOC_CTX *mem_ctx,
  62                                             struct idr_context *ino_ctx,
  63                                             const char *path)
  64 {
  65         struct inode_state *state;
  66         size_t pathlen;
  67         int ino;
  68
  69         pathlen = strlen(path);
  70         state = talloc_size(
  71                 mem_ctx, offsetof(struct inode_state, path) + pathlen + 1);
  72         if (state == NULL) {
  73                 return NULL;
  74         }
  75         talloc_set_name_const(state, "struct inode_state");
  76
  77         ino = idr_get_new_above(ino_ctx, state, 1, INT32_MAX);
  78         if (ino == -1) {
  79                 TALLOC_FREE(state);
  80                 return NULL;
  81         }
  82
  83         state->ino = ino;
  84         state->ino_ctx = ino_ctx;
  85         memcpy(state->path, path, pathlen + 1);
  86
  87         DBG_DEBUG("Creating ino %d for path %s\n", ino, path);
  88
  89         talloc_set_destructor(state, inode_state_destructor);
  90
  91         return state;
  92 }
  93
  94 static struct inode_state *inode_state_new(struct mount_state *mstate,
  95                                            const char *path)
  96 {
  97         return inode_state_init(mstate->ino_parent, mstate->ino_ctx, path);
  98 }
  99
 100 static int inode_state_destructor(struct inode_state *s)
 101 {
 102         DBG_DEBUG("destroying inode %ju\n", (uintmax_t)s->ino);
 103         idr_remove(s->ino_ctx, s->ino);
 104         return 0;
 105 }
 106
 107 struct ll_create_state {
 108         struct mount_state *mstate;
 109         fuse_req_t freq;
 110         struct fuse_file_info fi;
 111         char *path;
 112 };
 113
 114 static void cli_ll_create_done(struct tevent_req *req);
 115
 116 static void cli_ll_create(fuse_req_t freq, fuse_ino_t parent, const char *name,
 117                           mode_t mode, struct fuse_file_info *fi)
 118 {
 119         struct mount_state *mstate = talloc_get_type_abort(
 120                 fuse_req_userdata(freq), struct mount_state);
 121         struct ll_create_state *state;
 122         struct inode_state *istate;
 123         struct tevent_req *req;
 124
 125         DBG_DEBUG("parent=%ju, name=%s, mode=%x\n", (uintmax_t)parent,
 126                   name, (unsigned)mode);
 127
 128         istate = idr_find(mstate->ino_ctx, parent);
 129         if (istate == NULL) {
 130                 fuse_reply_err(freq, ENOENT);
 131                 return;
 132         }
 133
 134         state = talloc(mstate, struct ll_create_state);
 135         if (state == NULL) {
 136                 fuse_reply_err(freq, ENOMEM);
 137                 return;
 138         }
 139         state->mstate = mstate;
 140         state->freq = freq;
 141         state->fi = *fi;
 142
 143         state->path = talloc_asprintf(state, "%s%s%s", istate->path,
 144                                       strlen(istate->path) ? "\\": "",
 145                                       name);
 146         if (state->path == NULL) {
 147                 TALLOC_FREE(state);
 148                 fuse_reply_err(freq, ENOMEM);
 149                 return;
 150         }
 151
 152         req = cli_smb2_create_fnum_send(
 153                 state, mstate->ev, mstate->cli, state->path,
 154                 0, FILE_GENERIC_READ|FILE_GENERIC_WRITE, FILE_ATTRIBUTE_NORMAL,
 155                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 156                 FILE_CREATE, FILE_NON_DIRECTORY_FILE);
 157         if (req == NULL) {
 158                 TALLOC_FREE(state);
 159                 fuse_reply_err(freq, ENOMEM);
 160                 return;
 161         }
 162         tevent_req_set_callback(req, cli_ll_create_done, state);
 163 }
 164
 165 static void cli_ll_create_done(struct tevent_req *req)
 166 {
 167         struct ll_create_state *state = tevent_req_callback_data(
 168                 req, struct ll_create_state);
 169         struct fuse_entry_param e;
 170         struct inode_state *ino;
 171         uint16_t fnum;
 172         NTSTATUS status;
 173
 174         status = cli_smb2_create_fnum_recv(req, &fnum, NULL);
 175         TALLOC_FREE(req);
 176         if (!NT_STATUS_IS_OK(status)) {
 177                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
 178                 return;
 179         }
 180
 181         state->fi.fh = fnum;
 182         state->fi.direct_io = 0;
 183         state->fi.keep_cache = 0;
 184
 185         ino = inode_state_new(state->mstate, state->path);
 186         if (ino == NULL) {
 187                 fuse_reply_err(state->freq, ENOMEM);
 188                 return;
 189         }
 190
 191         e = (struct fuse_entry_param) {
 192                 .ino = ino->ino,
 193                 .generation = 1, /* FIXME */
 194                 .attr_timeout = 1.0,
 195                 .entry_timeout = 1.0
 196         };
 197
 198         fuse_reply_create(state->freq, &e, &state->fi);
 199
 200         TALLOC_FREE(state);
 201 }
 202
 203 struct cli_get_unixattr_state {
 204         struct tevent_context *ev;
 205         struct cli_state *cli;
 206         uint64_t fid_persistent;
 207         uint64_t fid_volatile;
 208
 209         struct timespec create_time;
 210         struct timespec access_time;
 211         struct timespec write_time;
 212         struct timespec change_time;
 213         uint32_t mode;
 214         uint64_t ino;
 215         uint64_t size;
 216 };
 217
 218 static void cli_get_unixattr_opened(struct tevent_req *subreq);
 219 static void cli_get_unixattr_gotinfo(struct tevent_req *subreq);
 220 static void cli_get_unixattr_closed(struct tevent_req *subreq);
 221
 222
 223 static struct tevent_req *cli_get_unixattr_send(TALLOC_CTX *mem_ctx,
 224                                                 struct tevent_context *ev,
 225                                                 struct cli_state *cli,
 226                                                 const char *path)
 227 {
 228         struct tevent_req *req, *subreq;
 229         struct cli_get_unixattr_state *state;
 230
 231         req = tevent_req_create(mem_ctx, &state,
 232                                 struct cli_get_unixattr_state);
 233         if (req == NULL) {
 234                 return NULL;
 235         }
 236         state->ev = ev;
 237         state->cli = cli;
 238
 239         subreq = smb2cli_create_send(
 240                 state, ev, cli->conn, cli->timeout, cli->smb2.session,
 241                 cli->smb2.tcon, path, SMB2_OPLOCK_LEVEL_NONE,
 242                 SMB2_IMPERSONATION_IMPERSONATION,
 243                 SYNCHRONIZE_ACCESS|FILE_READ_ATTRIBUTES, 0,
 244                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 245                 FILE_OPEN, 0, NULL);
 246         if (tevent_req_nomem(subreq, req)) {
 247                 return tevent_req_post(req, ev);
 248         }
 249         tevent_req_set_callback(subreq, cli_get_unixattr_opened, req);
 250
 251         return req;
 252 }
 253
 254 static void cli_get_unixattr_opened(struct tevent_req *subreq)
 255 {
 256         struct tevent_req *req = tevent_req_callback_data(
 257                 subreq, struct tevent_req);
 258         struct cli_get_unixattr_state *state = tevent_req_data(
 259                 req, struct cli_get_unixattr_state);
 260         struct cli_state *cli = state->cli;
 261         NTSTATUS status;
 262
 263         status = smb2cli_create_recv(subreq, &state->fid_persistent,
 264                                      &state->fid_volatile, NULL, NULL, NULL);
 265         TALLOC_FREE(subreq);
 266         if (tevent_req_nterror(req, status)) {
 267                 DBG_DEBUG("smb2cli_create_recv returned %s\n",
 268                           nt_errstr(status));
 269                 return;
 270         }
 271
 272         subreq = smb2cli_query_info_send(
 273                 state, state->ev, cli->conn, 0,
 274                 cli->smb2.session, cli->smb2.tcon,
 275                 1, /* in_info_type */
 276                 (SMB_FILE_ALL_INFORMATION - 1000), /* in_file_info_class */
 277                 0xFFFF, /* in_max_output_length */
 278                 NULL, /* in_input_buffer */
 279                 0, /* in_additional_info */
 280                 0, /* in_flags */
 281                 state->fid_persistent,
 282                 state->fid_volatile);
 283         if (tevent_req_nomem(subreq, req)) {
 284                 return;
 285         }
 286         tevent_req_set_callback(subreq, cli_get_unixattr_gotinfo, req);
 287 }
 288
 289 static void cli_get_unixattr_gotinfo(struct tevent_req *subreq)
 290 {
 291         struct tevent_req *req = tevent_req_callback_data(
 292                 subreq, struct tevent_req);
 293         struct cli_get_unixattr_state *state = tevent_req_data(
 294                 req, struct cli_get_unixattr_state);
 295         struct cli_state *cli = state->cli;
 296         NTSTATUS status;
 297         DATA_BLOB outbuf;
 298
 299         status = smb2cli_query_info_recv(subreq, state, &outbuf);
 300         TALLOC_FREE(subreq);
 301         if (tevent_req_nterror(req, status)) {
 302                 DBG_DEBUG("smb2cli_query_info_recv returned %s\n",
 303                           nt_errstr(status));
 304                 return;
 305         }
 306
 307         if (outbuf.length < 0x60) {
 308                 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
 309                 return;
 310         }
 311
 312         state->create_time = interpret_long_date((char *)outbuf.data + 0x0);
 313         state->access_time = interpret_long_date((char *)outbuf.data + 0x8);
 314         state->write_time  = interpret_long_date((char *)outbuf.data + 0x10);
 315         state->change_time = interpret_long_date((char *)outbuf.data + 0x18);
 316         state->mode        = IVAL(outbuf.data, 0x20);
 317         state->size        = BVAL(outbuf.data, 0x30);
 318         state->ino         = BVAL(outbuf.data, 0x40);
 319
 320         subreq = smb2cli_close_send(state, state->ev, cli->conn, 0,
 321                                     cli->smb2.session, cli->smb2.tcon, 0,
 322                                     state->fid_persistent,
 323                                     state->fid_volatile);
 324         if (tevent_req_nomem(subreq, req)) {
 325                 return;
 326         }
 327         tevent_req_set_callback(subreq, cli_get_unixattr_closed, req);
 328 }
 329
 330 static void cli_get_unixattr_closed(struct tevent_req *subreq)
 331 {
 332         struct tevent_req *req = tevent_req_callback_data(
 333                 subreq, struct tevent_req);
 334         NTSTATUS status;
 335
 336         status = smb2cli_close_recv(subreq);
 337         TALLOC_FREE(subreq);
 338         if (tevent_req_nterror(req, status)) {
 339                 return;
 340         }
 341         tevent_req_done(req);
 342 }
 343
 344 static NTSTATUS cli_get_unixattr_recv(struct tevent_req *req,
 345                                       struct stat *st)
 346 {
 347         struct cli_get_unixattr_state *state = tevent_req_data(
 348                 req, struct cli_get_unixattr_state);
 349         NTSTATUS status;
 350
 351         if (tevent_req_is_nterror(req, &status)) {
 352                 return status;
 353         }
 354
 355         if (IS_DOS_DIR(state->mode)) {
 356                 st->st_mode = (S_IFDIR | 0555);
 357                 st->st_nlink = 2;
 358         } else {
 359                 st->st_mode = (S_IFREG | 0444);
 360                 st->st_nlink = 1;
 361         }
 362
 363         st->st_size = state->size;
 364         st->st_uid = getuid();
 365         st->st_gid = getgid();
 366         st->st_ino = state->ino;
 367         st->st_atime = convert_timespec_to_time_t(state->access_time);
 368         st->st_ctime = convert_timespec_to_time_t(state->change_time);
 369         st->st_mtime = convert_timespec_to_time_t(state->write_time);
 370
 371         return NT_STATUS_OK;
 372 }
 373
 374 struct cli_smb2_listdir_state {
 375         struct tevent_context *ev;
 376         struct smbXcli_conn *conn;
 377         uint32_t timeout_msec;
 378         struct smbXcli_session *session;
 379         struct smbXcli_tcon *tcon;
 380         uint8_t level;
 381         uint8_t flags;
 382         uint32_t file_index;
 383         uint64_t fid_persistent;
 384         uint64_t fid_volatile;
 385         const char *mask;
 386         uint32_t outbuf_len;
 387
 388         uint16_t attribute;
 389         const char *mntpoint;
 390         const char *pathname;
 391         NTSTATUS (*fn)(const char *mntpoint, struct file_info *f,
 392                        const char *mask, void *private_data);
 393         void *private_data;
 394         bool processed_file;
 395 };
 396
 397 static void cli_smb2_listdir_done(struct tevent_req *subreq);
 398
 399 static struct tevent_req *cli_smb2_listdir_send(
 400         TALLOC_CTX *mem_ctx,
 401         struct tevent_context *ev,
 402         struct smbXcli_conn *conn,
 403         uint32_t timeout_msec,
 404         struct smbXcli_session *session,
 405         struct smbXcli_tcon *tcon,
 406         uint8_t level,
 407         uint8_t flags,
 408         uint32_t file_index,
 409         uint64_t fid_persistent,
 410         uint64_t fid_volatile,
 411         const char *mask,
 412         uint32_t outbuf_len,
 413         uint16_t attribute,
 414         const char *mntpoint,
 415         const char *pathname,
 416         NTSTATUS (*fn)(const char *mntpoint, struct file_info *f,
 417                        const char *mask, void *private_data),
 418         void *private_data)
 419 {
 420         struct tevent_req *req, *subreq;
 421         struct cli_smb2_listdir_state *state;
 422
 423         req = tevent_req_create(mem_ctx, &state,
 424                                 struct cli_smb2_listdir_state);
 425         if (req == NULL) {
 426                 return NULL;
 427         }
 428         state->ev = ev;
 429         state->conn = conn;
 430         state->timeout_msec = timeout_msec;
 431         state->session = session;
 432         state->tcon = tcon;
 433         state->level = level;
 434         state->flags = flags;
 435         state->file_index = file_index;
 436         state->fid_persistent = fid_persistent;
 437         state->fid_volatile = fid_volatile;
 438         state->mask = mask;
 439         state->outbuf_len = outbuf_len;
 440         state->attribute = attribute;
 441         state->mntpoint = mntpoint;
 442         state->pathname = pathname;
 443         state->fn = fn;
 444         state->private_data = private_data;
 445
 446         subreq = smb2cli_query_directory_send(
 447                 state, state->ev, state->conn, state->timeout_msec,
 448                 state->session, state->tcon, state->level,
 449                 state->flags, state->file_index,
 450                 state->fid_persistent, state->fid_volatile,
 451                 state->mask, state->outbuf_len);
 452         if (tevent_req_nomem(subreq, req)) {
 453                 return tevent_req_post(req, ev);
 454         }
 455         tevent_req_set_callback(subreq, cli_smb2_listdir_done, req);
 456         return req;
 457 }
 458
 459 static NTSTATUS parse_finfo_id_both_directory_info(uint8_t *dir_data,
 460                                 uint32_t dir_data_length,
 461                                 struct file_info *finfo,
 462                                 uint32_t *next_offset)
 463 {
 464         size_t namelen = 0;
 465         size_t slen = 0;
 466         size_t ret = 0;
 467
 468         if (dir_data_length < 4) {
 469                 return NT_STATUS_INFO_LENGTH_MISMATCH;
 470         }
 471
 472         *next_offset = IVAL(dir_data, 0);
 473
 474         if (*next_offset > dir_data_length) {
 475                 return NT_STATUS_INFO_LENGTH_MISMATCH;
 476         }
 477
 478         if (*next_offset != 0) {
 479                 /* Ensure we only read what in this record. */
 480                 dir_data_length = *next_offset;
 481         }
 482
 483         if (dir_data_length < 105) {
 484                 return NT_STATUS_INFO_LENGTH_MISMATCH;
 485         }
 486
 487         finfo->atime_ts = interpret_long_date((const char *)dir_data + 16);
 488         finfo->mtime_ts = interpret_long_date((const char *)dir_data + 24);
 489         finfo->ctime_ts = interpret_long_date((const char *)dir_data + 32);
 490         finfo->size = IVAL2_TO_SMB_BIG_UINT(dir_data + 40, 0);
 491         finfo->mode = CVAL(dir_data + 56, 0);
 492         namelen = IVAL(dir_data + 60,0);
 493         if (namelen > (dir_data_length - 104)) {
 494                 return NT_STATUS_INFO_LENGTH_MISMATCH;
 495         }
 496         slen = CVAL(dir_data + 68, 0);
 497         if (slen > 24) {
 498                 return NT_STATUS_INFO_LENGTH_MISMATCH;
 499         }
 500         ret = pull_string_talloc(finfo,
 501                                 dir_data,
 502                                 FLAGS2_UNICODE_STRINGS,
 503                                 &finfo->short_name,
 504                                 dir_data + 70,
 505                                 slen,
 506                                 STR_UNICODE);
 507         if (ret == (size_t)-1) {
 508                 /* Bad conversion. */
 509                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 510         }
 511
 512         ret = pull_string_talloc(finfo,
 513                                 dir_data,
 514                                 FLAGS2_UNICODE_STRINGS,
 515                                 &finfo->name,
 516                                 dir_data + 104,
 517                                 namelen,
 518                                 STR_UNICODE);
 519         if (ret == (size_t)-1) {
 520                 /* Bad conversion. */
 521                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 522         }
 523         return NT_STATUS_OK;
 524 }
 525
 526 static void cli_smb2_listdir_done(struct tevent_req *subreq)
 527 {
 528         struct tevent_req *req = tevent_req_callback_data(
 529                 subreq, struct tevent_req);
 530         struct cli_smb2_listdir_state *state = tevent_req_data(
 531                 req, struct cli_smb2_listdir_state);
 532         uint8_t *data;
 533         uint32_t data_len;
 534         uint32_t next_offset = 0;
 535         NTSTATUS status;
 536
 537         status = smb2cli_query_directory_recv(subreq, state, &data,
 538                                               &data_len);
 539         TALLOC_FREE(subreq);
 540         if (NT_STATUS_EQUAL(status, STATUS_NO_MORE_FILES)) {
 541                 tevent_req_done(req);
 542                 return;
 543         }
 544         if (tevent_req_nterror(req, status)) {
 545                 return;
 546         }
 547
 548         do {
 549                 struct file_info *finfo;
 550                 bool ok;
 551
 552                 finfo = talloc_zero(state, struct file_info);
 553                 if (tevent_req_nomem(finfo, req)) {
 554                         return;
 555                 }
 556
 557                 status = parse_finfo_id_both_directory_info(
 558                         data, data_len, finfo, &next_offset);
 559
 560                 DEBUG(10, ("%s: parse_finfo_id_both_directory_info returned "
 561                            "%s\n", __func__, nt_errstr(status)));
 562
 563                 if (tevent_req_nterror(req, status)) {
 564                         return;
 565                 }
 566
 567                 ok = dir_check_ftype(finfo->mode, state->attribute);
 568
 569                 DEBUG(10, ("%s: dir_check_ftype(%u,%u) returned %u\n",
 570                            __func__, (unsigned)finfo->mode,
 571                            (unsigned)state->attribute, (unsigned)ok));
 572
 573                 if (ok) {
 574                         /*
 575                          * Only process if attributes match. On SMB1 server
 576                          * does this, so on SMB2 we need to emulate in the
 577                          * client.
 578                          *
 579                          * https://bugzilla.samba.org/show_bug.cgi?id=10260
 580                          */
 581                         state->processed_file = true;
 582
 583                         status = state->fn(state->mntpoint, finfo,
 584                                            state->pathname,
 585                                            state->private_data);
 586                         if (tevent_req_nterror(req, status)) {
 587                                 return;
 588                         }
 589                 }
 590
 591                 TALLOC_FREE(finfo);
 592
 593                 if (next_offset != 0) {
 594                         data += next_offset;
 595                         data_len -= next_offset;
 596                 }
 597         } while (next_offset != 0);
 598
 599         subreq = smb2cli_query_directory_send(
 600                 state, state->ev, state->conn, state->timeout_msec,
 601                 state->session, state->tcon, state->level,
 602                 state->flags, state->file_index,
 603                 state->fid_persistent, state->fid_volatile,
 604                 state->mask, state->outbuf_len);
 605         if (tevent_req_nomem(subreq, req)) {
 606                 return;
 607         }
 608         tevent_req_set_callback(subreq, cli_smb2_listdir_done, req);
 609 }
 610
 611 static NTSTATUS cli_smb2_listdir_recv(struct tevent_req *req)
 612 {
 613         struct cli_smb2_listdir_state *state = tevent_req_data(
 614                 req, struct cli_smb2_listdir_state);
 615         NTSTATUS status;
 616
 617         if (tevent_req_is_nterror(req, &status)) {
 618                 return status;
 619         }
 620
 621         if (!state->processed_file) {
 622                 /*
 623                  * In SMB1 findfirst returns NT_STATUS_NO_SUCH_FILE
 624                  * if no files match. Emulate this in the client.
 625                  */
 626                 return NT_STATUS_NO_SUCH_FILE;
 627         }
 628
 629         return NT_STATUS_OK;
 630 }
 631
 632 struct ll_lookup_state {
 633         struct mount_state *mstate;
 634         fuse_req_t freq;
 635         char *path;
 636 };
 637
 638 static void cli_ll_lookup_done(struct tevent_req *req);
 639
 640 static void cli_ll_lookup(fuse_req_t freq, fuse_ino_t parent_ino,
 641                           const char *name)
 642 {
 643         struct mount_state *mstate = talloc_get_type_abort(
 644                 fuse_req_userdata(freq), struct mount_state);
 645         struct ll_lookup_state *state;
 646         struct tevent_req *req;
 647         struct inode_state *parent;
 648
 649         DBG_DEBUG("parent_ino=%ju, name=%s\n", (uintmax_t)parent_ino, name);
 650
 651         parent = idr_find(mstate->ino_ctx, parent_ino);
 652         if (parent == NULL) {
 653                 DBG_WARNING("could not find parent\n");
 654                 fuse_reply_err(freq, ENOENT);
 655                 return;
 656         }
 657
 658         state = talloc(mstate, struct ll_lookup_state);
 659         if (state == NULL) {
 660                 DBG_WARNING("talloc failed\n");
 661                 fuse_reply_err(freq, ENOMEM);
 662                 return;
 663         }
 664         state->mstate = mstate;
 665         state->freq = freq;
 666
 667         state->path = talloc_asprintf(state, "%s%s%s", parent->path,
 668                                       strlen(parent->path) ? "\\": "",
 669                                       name);
 670         if (state->path == NULL) {
 671                 TALLOC_FREE(state);
 672                 fuse_reply_err(freq, ENOMEM);
 673                 return;
 674         }
 675
 676         req = cli_get_unixattr_send(state, mstate->ev, mstate->cli,
 677                                     state->path);
 678         if (req == NULL) {
 679                 TALLOC_FREE(state);
 680                 fuse_reply_err(freq, ENOMEM);
 681                 return;
 682         }
 683         tevent_req_set_callback(req, cli_ll_lookup_done, state);
 684 }
 685
 686 static void cli_ll_lookup_done(struct tevent_req *req)
 687 {
 688         struct ll_lookup_state *state = tevent_req_callback_data(
 689                 req, struct ll_lookup_state);
 690         struct stat sbuf = {0};
 691         struct fuse_entry_param e;
 692         struct inode_state *ino;
 693         NTSTATUS status;
 694
 695         status = cli_get_unixattr_recv(req, &sbuf);
 696         TALLOC_FREE(req);
 697         if (!NT_STATUS_IS_OK(status)) {
 698                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
 699                 return;
 700         }
 701
 702         ino = inode_state_new(state->mstate, state->path);
 703         if (ino == NULL) {
 704                 fuse_reply_err(state->freq, ENOMEM);
 705                 return;
 706         }
 707
 708         e = (struct fuse_entry_param) {
 709                 .ino = ino->ino,
 710                 .attr = sbuf,
 711                 .generation = 1, /* FIXME */
 712                 .attr_timeout = 1.0,
 713                 .entry_timeout = 1.0
 714         };
 715
 716         fuse_reply_entry(state->freq, &e);
 717         TALLOC_FREE(state);
 718 }
 719
 720 struct ll_open_state {
 721         struct mount_state *mstate;
 722         fuse_req_t freq;
 723         struct fuse_file_info fi;
 724 };
 725
 726 static void cli_ll_open_done(struct tevent_req *req);
 727
 728 static void cli_ll_open(fuse_req_t freq, fuse_ino_t ino,
 729                         struct fuse_file_info *fi)
 730 {
 731         struct mount_state *mstate = talloc_get_type_abort(
 732                 fuse_req_userdata(freq), struct mount_state);
 733         struct ll_open_state *state;
 734         struct inode_state *istate;
 735         struct tevent_req *req;
 736         uint32_t acc;
 737
 738         DBG_DEBUG("ino=%ju\n", (uintmax_t)ino);
 739
 740         istate = idr_find(mstate->ino_ctx, ino);
 741         if (istate == NULL) {
 742                 fuse_reply_err(freq, ENOENT);
 743                 return;
 744         }
 745
 746         state = talloc(mstate, struct ll_open_state);
 747         if (state == NULL) {
 748                 fuse_reply_err(freq, ENOMEM);
 749                 return;
 750         }
 751         state->mstate = mstate;
 752         state->freq = freq;
 753         state->fi = *fi;
 754
 755         switch (fi->flags & O_ACCMODE) {
 756         case O_RDONLY:
 757                 acc = FILE_GENERIC_READ;
 758                 break;
 759         case O_WRONLY:
 760                 acc = FILE_GENERIC_WRITE;
 761                 break;
 762         case O_RDWR:
 763                 acc = FILE_GENERIC_READ|FILE_GENERIC_WRITE;
 764                 break;
 765         default:
 766                 fuse_reply_err(freq, EACCES);
 767                 return;
 768         }
 769
 770         req = cli_smb2_create_fnum_send(
 771                 state, mstate->ev, mstate->cli, istate->path,
 772                 0, acc, FILE_ATTRIBUTE_NORMAL,
 773                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
 774                 FILE_OPEN, FILE_NON_DIRECTORY_FILE);
 775         if (req == NULL) {
 776                 TALLOC_FREE(state);
 777                 fuse_reply_err(freq, ENOMEM);
 778                 return;
 779         }
 780         tevent_req_set_callback(req, cli_ll_open_done, state);
 781 }
 782
 783 static void cli_ll_open_done(struct tevent_req *req)
 784 {
 785         struct ll_open_state *state = tevent_req_callback_data(
 786                 req, struct ll_open_state);
 787         uint16_t fnum;
 788         NTSTATUS status;
 789
 790         status = cli_smb2_create_fnum_recv(req, &fnum, NULL);
 791         TALLOC_FREE(req);
 792         if (!NT_STATUS_IS_OK(status)) {
 793                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
 794                 return;
 795         }
 796
 797         state->fi.fh = fnum;
 798         state->fi.direct_io = 0;
 799         state->fi.keep_cache = 0;
 800
 801         fuse_reply_open(state->freq, &state->fi);
 802
 803         TALLOC_FREE(state);
 804 }
 805
 806 struct ll_release_state {
 807         struct mount_state *mstate;
 808         fuse_req_t freq;
 809         fuse_ino_t ino;
 810 };
 811
 812 static void cli_ll_release_done(struct tevent_req *req);
 813
 814 static void cli_ll_release(fuse_req_t freq, fuse_ino_t ino,
 815                            struct fuse_file_info *fi)
 816 {
 817         struct mount_state *mstate = talloc_get_type_abort(
 818                 fuse_req_userdata(freq), struct mount_state);
 819         struct ll_release_state *state;
 820         struct inode_state *istate;
 821         struct tevent_req *req;
 822         uint16_t fnum;
 823
 824         DBG_DEBUG("ino=%ju\n", (uintmax_t)ino);
 825
 826         istate = idr_find(mstate->ino_ctx, ino);
 827         if (istate == NULL) {
 828                 fuse_reply_err(freq, ENOENT);
 829                 return;
 830         }
 831
 832         state = talloc(mstate, struct ll_release_state);
 833         if (state == NULL) {
 834                 fuse_reply_err(freq, ENOMEM);
 835                 return;
 836         }
 837         state->mstate = mstate;
 838         state->freq = freq;
 839         state->ino = ino;
 840
 841         fnum = fi->fh;
 842
 843         req = cli_smb2_close_fnum_send(state, mstate->ev, mstate->cli, fnum);
 844         if (req == NULL) {
 845                 TALLOC_FREE(state);
 846                 fuse_reply_err(freq, ENOMEM);
 847                 return;
 848         }
 849         tevent_req_set_callback(req, cli_ll_release_done, state);
 850 }
 851
 852 static void cli_ll_release_done(struct tevent_req *req)
 853 {
 854         struct ll_release_state *state = tevent_req_callback_data(
 855                 req, struct ll_release_state);
 856         struct inode_state *istate;
 857         NTSTATUS status;
 858
 859         status = cli_smb2_close_fnum_recv(req);
 860         TALLOC_FREE(req);
 861         if (!NT_STATUS_IS_OK(status)) {
 862                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
 863                 return;
 864         }
 865
 866         istate = idr_find(state->mstate->ino_ctx, state->ino);
 867         if (istate == NULL) {
 868                 DEBUG(1, ("%s: inode %ju vanished!\n", __func__,
 869                           (uintmax_t)state->ino));
 870         }
 871         TALLOC_FREE(istate);
 872
 873         fuse_reply_err(state->freq, 0);
 874         TALLOC_FREE(state);
 875 }
 876
 877 struct ll_read_state {
 878         struct mount_state *mstate;
 879         fuse_req_t freq;
 880 };
 881
 882 static void cli_ll_read_done(struct tevent_req *req);
 883
 884 static void cli_ll_read(fuse_req_t freq, fuse_ino_t ino,
 885                         size_t size, off_t off,
 886                         struct fuse_file_info *fi)
 887 {
 888         struct mount_state *mstate = talloc_get_type_abort(
 889                 fuse_req_userdata(freq), struct mount_state);
 890         struct ll_read_state *state;
 891         struct tevent_req *req;
 892         uint16_t fnum;
 893
 894         DBG_DEBUG("ino=%ju, size=%zu, off=%ju\n", (uintmax_t)ino,
 895                   size, (uintmax_t)off);
 896
 897         state = talloc(mstate, struct ll_read_state);
 898         if (state == NULL) {
 899                 fuse_reply_err(freq, ENOMEM);
 900                 return;
 901         }
 902         state->mstate = mstate;
 903         state->freq = freq;
 904
 905         fnum = fi->fh;
 906
 907         req = cli_smb2_read_send(state, mstate->ev, mstate->cli,
 908                                  fnum, off, size);
 909         if (req == NULL) {
 910                 TALLOC_FREE(state);
 911                 fuse_reply_err(freq, ENOMEM);
 912                 return;
 913         }
 914         tevent_req_set_callback(req, cli_ll_read_done, state);
 915 }
 916
 917 static void cli_ll_read_done(struct tevent_req *req)
 918 {
 919         struct ll_read_state *state = tevent_req_callback_data(
 920                 req, struct ll_read_state);
 921         ssize_t received;
 922         uint8_t *rcvbuf;
 923         NTSTATUS status;
 924
 925         status = cli_smb2_read_recv(req, &received, &rcvbuf);
 926         /* no talloc_free here yet */
 927
 928         if (NT_STATUS_EQUAL(status, NT_STATUS_END_OF_FILE)) {
 929                 received = 0;
 930                 rcvbuf = NULL;
 931                 status = NT_STATUS_OK;
 932         }
 933
 934         if (!NT_STATUS_IS_OK(status)) {
 935                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
 936                 return;
 937         }
 938         fuse_reply_buf(state->freq, (char *)rcvbuf, received);
 939         TALLOC_FREE(state);
 940 }
 941
 942 struct ll_write_state {
 943         struct mount_state *mstate;
 944         fuse_req_t freq;
 945 };
 946
 947 static void cli_ll_write_done(struct tevent_req *req);
 948
 949 static void cli_ll_write(fuse_req_t freq, fuse_ino_t ino, const char *buf,
 950                          size_t size, off_t off, struct fuse_file_info *fi)
 951 {
 952         struct mount_state *mstate = talloc_get_type_abort(
 953                 fuse_req_userdata(freq), struct mount_state);
 954         struct ll_write_state *state;
 955         struct tevent_req *req;
 956         uint16_t fnum;
 957
 958         DBG_DEBUG("ino=%ju, size=%zu, off=%ju\n", (uintmax_t)ino,
 959                   size, (uintmax_t)off);
 960
 961         state = talloc(mstate, struct ll_write_state);
 962         if (state == NULL) {
 963                 fuse_reply_err(freq, ENOMEM);
 964                 return;
 965         }
 966         state->mstate = mstate;
 967         state->freq = freq;
 968
 969         fnum = fi->fh;
 970
 971         req = cli_smb2_write_send(state, mstate->ev, mstate->cli, fnum, 0,
 972                                   (const uint8_t *)buf, off, size);
 973         if (req == NULL) {
 974                 TALLOC_FREE(state);
 975                 fuse_reply_err(freq, ENOMEM);
 976                 return;
 977         }
 978         tevent_req_set_callback(req, cli_ll_write_done, state);
 979 }
 980
 981 static void cli_ll_write_done(struct tevent_req *req)
 982 {
 983         struct ll_write_state *state = tevent_req_callback_data(
 984                 req, struct ll_write_state);
 985         size_t written;
 986         NTSTATUS status;
 987
 988         status = cli_smb2_write_recv(req, &written);
 989         /* no talloc_free here yet */
 990         if (!NT_STATUS_IS_OK(status)) {
 991                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
 992                 return;
 993         }
 994         fuse_reply_write(state->freq, written);
 995         TALLOC_FREE(state);
 996 }
 997
 998
 999 struct ll_dir_state {
1000         uint64_t fid_persistent;
1001         uint64_t fid_volatile;
1002
1003         struct file_info *finfos;
1004         unsigned num_finfos, num_sent;
1005 };
1006
1007 static bool ll_dir_state_add(struct ll_dir_state *dir_state,
1008                              const char *name)
1009 {
1010         struct file_info *tmp, *finfo;
1011
1012         tmp = talloc_realloc(dir_state, dir_state->finfos,
1013                              struct file_info, dir_state->num_finfos+1);
1014         if (tmp == NULL) {
1015                 return false;
1016         }
1017         dir_state->finfos = tmp;
1018         finfo = &dir_state->finfos[dir_state->num_finfos];
1019
1020         ZERO_STRUCTP(finfo);
1021
1022         finfo->name = talloc_strdup(dir_state->finfos, name);
1023         if (finfo->name == NULL) {
1024                 return false;
1025         }
1026         dir_state->num_finfos += 1;
1027
1028         return true;
1029 }
1030
1031 struct ll_opendir_state {
1032         struct mount_state *mstate;
1033         fuse_req_t freq;
1034         struct fuse_file_info fi;
1035         struct ll_dir_state *dir_state;
1036 };
1037
1038 static void cli_ll_opendir_done(struct tevent_req *req);
1039
1040 static void cli_ll_opendir(fuse_req_t freq, fuse_ino_t ino,
1041                            struct fuse_file_info *fi)
1042 {
1043         struct mount_state *mstate = talloc_get_type_abort(
1044                 fuse_req_userdata(freq), struct mount_state);
1045         struct cli_state *cli = mstate->cli;
1046         struct ll_opendir_state *state;
1047         struct inode_state *istate;
1048         struct tevent_req *req;
1049
1050         DBG_DEBUG("ino=%ju\n", (uintmax_t)ino);
1051
1052         istate = idr_find(mstate->ino_ctx, ino);
1053         if (istate == NULL) {
1054                 fuse_reply_err(freq, ENOENT);
1055                 return;
1056         }
1057
1058         state = talloc(mstate, struct ll_opendir_state);
1059         if (state == NULL) {
1060                 fuse_reply_err(freq, ENOMEM);
1061                 return;
1062         }
1063         state->mstate = mstate;
1064         state->freq = freq;
1065         state->fi = *fi;
1066
1067         state->dir_state = talloc_zero(state, struct ll_dir_state);
1068         if (state->dir_state == NULL) {
1069                 TALLOC_FREE(state);
1070                 fuse_reply_err(freq, ENOMEM);
1071                 return;
1072         }
1073
1074         req = smb2cli_create_send(
1075                 state, mstate->ev, cli->conn, cli->timeout,
1076                 cli->smb2.session, cli->smb2.tcon, istate->path,
1077                 0, SMB2_IMPERSONATION_IMPERSONATION,
1078                 FILE_GENERIC_READ, FILE_ATTRIBUTE_DIRECTORY,
1079                 FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
1080                 FILE_OPEN, FILE_DIRECTORY_FILE, NULL);
1081         if (req == NULL) {
1082                 TALLOC_FREE(state);
1083                 fuse_reply_err(freq, ENOMEM);
1084                 return;
1085         }
1086         tevent_req_set_callback(req, cli_ll_opendir_done, state);
1087 }
1088
1089 static void cli_ll_opendir_done(struct tevent_req *req)
1090 {
1091         struct ll_opendir_state *state = tevent_req_callback_data(
1092                 req, struct ll_opendir_state);
1093         NTSTATUS status;
1094
1095         status = smb2cli_create_recv(req,
1096                                      &state->dir_state->fid_persistent,
1097                                      &state->dir_state->fid_volatile,
1098                                      NULL, NULL, NULL);
1099         TALLOC_FREE(req);
1100
1101         DEBUG(10, ("%s: smbcli_create_recv returned %s\n", __func__,
1102                    nt_errstr(status)));
1103
1104         if (!NT_STATUS_IS_OK(status)) {
1105                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
1106                 return;
1107         }
1108
1109         state->fi.fh = (uint64_t)talloc_move(state->mstate, &state->dir_state);
1110         state->fi.direct_io = 0;
1111         state->fi.keep_cache = 0;
1112
1113         fuse_reply_open(state->freq, &state->fi);
1114
1115         TALLOC_FREE(state);
1116 }
1117
1118 struct ll_readdir_state {
1119         fuse_req_t freq;
1120         struct ll_dir_state *dir_state;
1121 };
1122
1123 static void cli_ll_readdir_done(struct tevent_req *subreq);
1124 static NTSTATUS cli_ll_readdir_one(const char *mnt, struct file_info *finfo,
1125                                    const char *path, void *private_data);
1126 static void cli_ll_readdir_reply_one(fuse_req_t freq,
1127                                      struct ll_dir_state *dir_state);
1128
1129 static void cli_ll_readdir(fuse_req_t freq, fuse_ino_t ino, size_t size,
1130                            off_t off, struct fuse_file_info *fi)
1131 {
1132         struct mount_state *mstate = talloc_get_type_abort(
1133                 fuse_req_userdata(freq), struct mount_state);
1134         struct cli_state *cli = mstate->cli;
1135         struct ll_dir_state *dir_state;
1136         struct ll_readdir_state *state;
1137         struct tevent_req *req;
1138
1139         DBG_DEBUG("ino=%ju, size=%zu, off=%ju\n", (uintmax_t)ino, size,
1140                   (uintmax_t)off);
1141
1142         dir_state = talloc_get_type_abort((void *)fi->fh, struct ll_dir_state);
1143
1144         if (dir_state->finfos != NULL) {
1145                 DBG_DEBUG("finfos=%p\n", dir_state->finfos);
1146                 cli_ll_readdir_reply_one(freq, dir_state);
1147                 return;
1148         }
1149
1150         if (!ll_dir_state_add(dir_state, ".") ||
1151             !ll_dir_state_add(dir_state, "..")) {
1152                 fuse_reply_err(freq, ENOMEM);
1153                 return;
1154         }
1155
1156         state = talloc(mstate, struct ll_readdir_state);
1157         if (state == NULL) {
1158                 fuse_reply_err(freq, ENOMEM);
1159                 return;
1160         }
1161         state->freq = freq;
1162         state->dir_state = dir_state;
1163
1164         req = cli_smb2_listdir_send(
1165                 state, mstate->ev, cli->conn, cli->timeout,
1166                 cli->smb2.session, cli->smb2.tcon,
1167                 SMB2_FIND_ID_BOTH_DIRECTORY_INFO, 0, 0,
1168                 dir_state->fid_persistent, dir_state->fid_volatile,
1169                 "*", 0xffff,
1170                 FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_SYSTEM |
1171                 FILE_ATTRIBUTE_HIDDEN,
1172                 NULL, NULL, cli_ll_readdir_one, dir_state);
1173         if (req == NULL) {
1174                 TALLOC_FREE(state);
1175                 fuse_reply_err(freq, ENOMEM);
1176                 return;
1177         }
1178         tevent_req_set_callback(req, cli_ll_readdir_done, state);
1179 }
1180
1181 static void cli_ll_readdir_reply_one(fuse_req_t freq,
1182                                      struct ll_dir_state *dir_state)
1183 {
1184         struct file_info *finfo;
1185         char buf[1024];
1186         struct stat sbuf = {};
1187         size_t buflen;
1188
1189         if (dir_state->num_finfos == dir_state->num_sent) {
1190                 DEBUG(10, ("%s: Done\n", __func__));
1191                 fuse_reply_buf(freq, NULL, 0);
1192                 return;
1193         }
1194
1195         sbuf.st_mode = S_IFREG | 0755;
1196         sbuf.st_ino = random(); /* FIXME :-) */
1197         finfo = &dir_state->finfos[dir_state->num_sent];
1198
1199         DBG_DEBUG("Adding %s\n", finfo->name);
1200
1201         buflen = fuse_add_direntry(freq, buf, sizeof(buf),
1202                                    finfo->name, &sbuf, 0);
1203         fuse_reply_buf(freq, buf, buflen);
1204         dir_state->num_sent += 1;
1205         return;
1206 }
1207
1208 static NTSTATUS cli_ll_readdir_one(const char *mnt, struct file_info *finfo,
1209                                    const char *path, void *private_data)
1210 {
1211         struct ll_dir_state *dir_state = talloc_get_type_abort(
1212                 private_data, struct ll_dir_state);
1213
1214         if (ISDOT(finfo->name) || ISDOTDOT(finfo->name)) {
1215                 DEBUG(10, ("%s: Ignoring %s\n", __func__, finfo->name));
1216                 return NT_STATUS_OK;
1217         }
1218
1219         DBG_DEBUG("Got entry %s\n", finfo->name);
1220
1221         if (!ll_dir_state_add(dir_state, finfo->name)) {
1222                 return NT_STATUS_NO_MEMORY;
1223         }
1224         return NT_STATUS_OK;
1225 }
1226
1227 static void cli_ll_readdir_done(struct tevent_req *req)
1228 {
1229         struct ll_readdir_state *state = tevent_req_callback_data(
1230                 req, struct ll_readdir_state);
1231         NTSTATUS status;
1232
1233         status = cli_smb2_listdir_recv(req);
1234         TALLOC_FREE(req);
1235         if (!NT_STATUS_IS_OK(status)) {
1236                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
1237                 return;
1238         }
1239         cli_ll_readdir_reply_one(state->freq, state->dir_state);
1240         TALLOC_FREE(state);
1241 }
1242
1243
1244 struct ll_releasedir_state {
1245         struct mount_state *mstate;
1246         fuse_req_t freq;
1247         struct ll_dir_state *dir_state;
1248 };
1249
1250 static void cli_ll_releasedir_done(struct tevent_req *req);
1251
1252 static void cli_ll_releasedir(fuse_req_t freq, fuse_ino_t ino,
1253                               struct fuse_file_info *fi)
1254 {
1255         struct mount_state *mstate = talloc_get_type_abort(
1256                 fuse_req_userdata(freq), struct mount_state);
1257         struct cli_state *cli = mstate->cli;
1258         struct ll_releasedir_state *state;
1259         struct tevent_req *req;
1260
1261         DBG_DEBUG("ino=%ju\n", (uintmax_t)ino);
1262
1263         state = talloc(mstate, struct ll_releasedir_state);
1264         if (state == NULL) {
1265                 fuse_reply_err(freq, ENOMEM);
1266                 return;
1267         }
1268         state->mstate = mstate;
1269         state->freq = freq;
1270
1271         state->dir_state = talloc_get_type_abort(
1272                 (void *)fi->fh, struct ll_dir_state);
1273
1274         req = smb2cli_close_send(state, mstate->ev, cli->conn, cli->timeout,
1275                                  cli->smb2.session, cli->smb2.tcon, 0,
1276                                  state->dir_state->fid_persistent,
1277                                  state->dir_state->fid_volatile);
1278         if (req == NULL) {
1279                 TALLOC_FREE(state);
1280                 fuse_reply_err(freq, ENOMEM);
1281                 return;
1282         }
1283         tevent_req_set_callback(req, cli_ll_releasedir_done, state);
1284 }
1285
1286 static void cli_ll_releasedir_done(struct tevent_req *req)
1287 {
1288         struct ll_releasedir_state *state = tevent_req_callback_data(
1289                 req, struct ll_releasedir_state);
1290         NTSTATUS status;
1291
1292         status = smb2cli_close_recv(req);
1293         TALLOC_FREE(req);
1294         if (!NT_STATUS_IS_OK(status)) {
1295                 fuse_reply_err(state->freq, map_errno_from_nt_status(status));
1296                 return;
1297         }
1298         TALLOC_FREE(state->dir_state);
1299         fuse_reply_err(state->freq, 0);
1300         TALLOC_FREE(state);
1301 }
1302
1303 static struct fuse_lowlevel_ops cli_ll_ops = {
1304         .lookup = cli_ll_lookup,
1305         .open = cli_ll_open,
1306         .create = cli_ll_create,
1307         .release = cli_ll_release,
1308         .read = cli_ll_read,
1309         .write = cli_ll_write,
1310         .opendir = cli_ll_opendir,
1311         .readdir = cli_ll_readdir,
1312         .releasedir = cli_ll_releasedir,
1313 };
1314
1315 static void fuse_chan_fd_handler(struct tevent_context *ev,
1316                                  struct tevent_fd *fde,
1317                                  uint16_t flags,
1318                                  void *private_data);
1319 static void fuse_chan_signal_handler(struct tevent_context *ev,
1320                                      struct tevent_signal *se,
1321                                      int signum,
1322                                      int count,
1323                                      void *siginfo,
1324                                      void *private_data);
1325
1326 static int mount_state_destructor(struct mount_state *s);
1327
1328 int do_mount(struct cli_state *cli, const char *mountpoint)
1329 {
1330         struct mount_state *state;
1331         struct inode_state *ino;
1332         struct fuse_args args = { 0 };
1333         int fd;
1334         int ret = 1;
1335
1336         state = talloc_zero(talloc_tos(), struct mount_state);
1337         if (state == NULL) {
1338                 fprintf(stderr, "talloc failed\n");
1339                 return 1;
1340         }
1341
1342         state->ev = tevent_context_init(state);
1343         if (state->ev == NULL) {
1344                 fprintf(stderr, "tevent_context_init failed\n");
1345                 TALLOC_FREE(state);
1346                 return 1;
1347         }
1348
1349         state->ino_ctx = idr_init(state);
1350         if (state->ino_ctx == NULL) {
1351                 fprintf(stderr, "idr_init failed\n");
1352                 TALLOC_FREE(state);
1353                 return 1;
1354         }
1355
1356         state->ino_parent = talloc_new(state);
1357         if (state->ino_parent == NULL) {
1358                 fprintf(stderr, "talloc_new failed\n");
1359                 TALLOC_FREE(state);
1360                 return 1;
1361         }
1362
1363         talloc_set_destructor(state, mount_state_destructor);
1364
1365         ino = inode_state_new(state, "");
1366         if (ino == NULL) {
1367                 fprintf(stderr, "inode_state_new failed\n");
1368                 TALLOC_FREE(state);
1369                 return 1;
1370         }
1371         if (ino->ino != FUSE_ROOT_ID) {
1372                 fprintf(stderr, "first inode gave %d, expected %d\n",
1373                         (int)ino->ino, FUSE_ROOT_ID);
1374                 TALLOC_FREE(state);
1375                 return 1;
1376         }
1377
1378         state->cli = cli;
1379
1380         state->ch = fuse_mount(mountpoint, &args);
1381         if (state->ch == NULL) {
1382                 perror("fuse_mount failed");
1383                 goto fail_free;
1384         }
1385
1386         state->bufsize = fuse_chan_bufsize(state->ch);
1387         state->buf = talloc_array(state, char, state->bufsize);
1388         if (state->buf == NULL) {
1389                 fprintf(stderr, "talloc failed\n");
1390                 goto fail_unmount;
1391         }
1392
1393         fd = fuse_chan_fd(state->ch);
1394
1395         state->fde = tevent_add_fd(state->ev, state, fd, TEVENT_FD_READ,
1396                                    fuse_chan_fd_handler, state);
1397         if (state->fde == NULL) {
1398                 fprintf(stderr, "tevent_add_fd failed\n");
1399                 goto fail_unmount;
1400         }
1401
1402         state->signal_ev = tevent_add_signal(state->ev, state, SIGINT, 0,
1403                                              fuse_chan_signal_handler, state);
1404         if (state->signal_ev == NULL) {
1405                 fprintf(stderr, "tevent_add_signal failed\n");
1406                 goto fail_unmount;
1407         }
1408
1409         state->se = fuse_lowlevel_new(&args, &cli_ll_ops, sizeof(cli_ll_ops),
1410                                       state);
1411         if (state->se == NULL) {
1412                 perror("fuse_lowlevel_new failed");
1413                 goto fail_unmount;
1414         }
1415
1416         fuse_session_add_chan(state->se, state->ch);
1417
1418         while (!state->done) {
1419                 ret = tevent_loop_once(state->ev);
1420                 if (ret == -1) {
1421                         perror("tevent_loop_once failed");
1422                         break;
1423                 }
1424         }
1425
1426         fuse_session_remove_chan(state->ch);
1427         fuse_session_destroy(state->se);
1428 fail_unmount:
1429         fuse_unmount(mountpoint, state->ch);
1430 fail_free:
1431         TALLOC_FREE(state);
1432         return ret;
1433 }
1434
1435 static int mount_state_destructor(struct mount_state *s)
1436 {
1437         TALLOC_FREE(s->ino_parent);
1438         return 0;
1439 }
1440
1441
1442 static void fuse_chan_fd_handler(struct tevent_context *ev,
1443                                  struct tevent_fd *fde,
1444                                  uint16_t flags,
1445                                  void *private_data)
1446 {
1447         struct mount_state *state = talloc_get_type_abort(
1448                 private_data, struct mount_state);
1449         int recvd;
1450
1451         if ((flags & TEVENT_FD_READ) == 0) {
1452                 return;
1453         }
1454
1455         recvd = fuse_chan_recv(&state->ch, state->buf, state->bufsize);
1456         if (recvd <= 0) {
1457                 state->done = true;
1458                 return;
1459         }
1460         fuse_session_process(state->se, state->buf, recvd, state->ch);
1461 }
1462
1463 static void fuse_chan_signal_handler(struct tevent_context *ev,
1464                                      struct tevent_signal *se,
1465                                      int signum,
1466                                      int count,
1467                                      void *siginfo,
1468                                      void *private_data)
1469 {
1470         struct mount_state *state = talloc_get_type_abort(
1471                 private_data, struct mount_state);
1472         state->done = true;
1473 }