Lines Matching refs:fc
128 struct fuse_conn *fc = get_fuse_conn(inode); in fuse_evict_inode() local
133 fuse_queue_forget(fc, fi->forget, fi->nodeid, in fuse_evict_inode()
144 static int fuse_reconfigure(struct fs_context *fc) in fuse_reconfigure() argument
146 struct super_block *sb = fc->root->d_sb; in fuse_reconfigure()
149 if (fc->sb_flags & SB_MANDLOCK) in fuse_reconfigure()
170 struct fuse_conn *fc = get_fuse_conn(inode); in fuse_change_attributes_common() local
175 fi->attr_version = atomic64_inc_return(&fc->attr_version); in fuse_change_attributes_common()
182 inode->i_uid = make_kuid(fc->user_ns, attr->uid); in fuse_change_attributes_common()
183 inode->i_gid = make_kgid(fc->user_ns, attr->gid); in fuse_change_attributes_common()
194 if (!fc->writeback_cache || !S_ISREG(inode->i_mode)) { in fuse_change_attributes_common()
212 if (!fc->default_permissions) in fuse_change_attributes_common()
221 struct fuse_conn *fc = get_fuse_conn(inode); in fuse_change_attributes() local
223 bool is_wb = fc->writeback_cache; in fuse_change_attributes()
252 if (!fc->explicit_inval_data) in fuse_change_attributes()
254 } else if (fc->auto_inval_data) { in fuse_change_attributes()
319 struct fuse_conn *fc = get_fuse_conn_super(sb); in fuse_iget() local
328 if (fc->auto_submounts && (attr->flags & FUSE_ATTR_SUBMOUNT) && in fuse_iget()
347 if (!fc->writeback_cache || !S_ISREG(attr->mode)) in fuse_iget()
368 struct inode *fuse_ilookup(struct fuse_conn *fc, u64 nodeid, in fuse_ilookup() argument
374 WARN_ON(!rwsem_is_locked(&fc->killsb)); in fuse_ilookup()
375 list_for_each_entry(fm_iter, &fc->mounts, fc_entry) { in fuse_ilookup()
390 int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid, in fuse_reverse_inval_inode() argument
398 inode = fuse_ilookup(fc, nodeid, NULL); in fuse_reverse_inval_inode()
404 fi->attr_version = atomic64_inc_return(&fc->attr_version); in fuse_reverse_inval_inode()
442 struct fuse_conn *fc = get_fuse_conn_super(sb); in fuse_umount_begin() local
444 if (!fc->no_force_umount) in fuse_umount_begin()
445 fuse_abort_conn(fc); in fuse_umount_begin()
450 if (fm->fc->conn_init) { in fuse_send_destroy()
489 if (!fuse_allow_current_process(fm->fc)) { in fuse_statfs()
535 static int fuse_parse_param(struct fs_context *fc, struct fs_parameter *param) in fuse_parse_param() argument
538 struct fuse_fs_context *ctx = fc->fs_private; in fuse_parse_param()
541 if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { in fuse_parse_param()
546 if (fc->oldapi) in fuse_parse_param()
549 return invalfc(fc, "No changes allowed in reconfigure"); in fuse_parse_param()
552 opt = fs_parse(fc, fuse_fs_parameters, param, &result); in fuse_parse_param()
558 if (fc->source) in fuse_parse_param()
559 return invalfc(fc, "Multiple sources specified"); in fuse_parse_param()
560 fc->source = param->string; in fuse_parse_param()
566 return invalfc(fc, "Multiple subtypes specified"); in fuse_parse_param()
578 return invalfc(fc, "Invalid rootmode"); in fuse_parse_param()
584 ctx->user_id = make_kuid(fc->user_ns, result.uint_32); in fuse_parse_param()
586 return invalfc(fc, "Invalid user_id"); in fuse_parse_param()
591 ctx->group_id = make_kgid(fc->user_ns, result.uint_32); in fuse_parse_param()
593 return invalfc(fc, "Invalid group_id"); in fuse_parse_param()
611 return invalfc(fc, "blksize only supported for fuseblk"); in fuse_parse_param()
622 static void fuse_free_fc(struct fs_context *fc) in fuse_free_fc() argument
624 struct fuse_fs_context *ctx = fc->fs_private; in fuse_free_fc()
635 struct fuse_conn *fc = get_fuse_conn_super(sb); in fuse_show_options() local
637 if (fc->legacy_opts_show) { in fuse_show_options()
639 from_kuid_munged(fc->user_ns, fc->user_id)); in fuse_show_options()
641 from_kgid_munged(fc->user_ns, fc->group_id)); in fuse_show_options()
642 if (fc->default_permissions) in fuse_show_options()
644 if (fc->allow_other) in fuse_show_options()
646 if (fc->max_read != ~0) in fuse_show_options()
647 seq_printf(m, ",max_read=%u", fc->max_read); in fuse_show_options()
652 if (fc->dax) in fuse_show_options()
685 void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm, in fuse_conn_init() argument
689 memset(fc, 0, sizeof(*fc)); in fuse_conn_init()
690 spin_lock_init(&fc->lock); in fuse_conn_init()
691 spin_lock_init(&fc->bg_lock); in fuse_conn_init()
692 init_rwsem(&fc->killsb); in fuse_conn_init()
693 refcount_set(&fc->count, 1); in fuse_conn_init()
694 atomic_set(&fc->dev_count, 1); in fuse_conn_init()
695 init_waitqueue_head(&fc->blocked_waitq); in fuse_conn_init()
696 fuse_iqueue_init(&fc->iq, fiq_ops, fiq_priv); in fuse_conn_init()
697 INIT_LIST_HEAD(&fc->bg_queue); in fuse_conn_init()
698 INIT_LIST_HEAD(&fc->entry); in fuse_conn_init()
699 INIT_LIST_HEAD(&fc->devices); in fuse_conn_init()
700 atomic_set(&fc->num_waiting, 0); in fuse_conn_init()
701 fc->max_background = FUSE_DEFAULT_MAX_BACKGROUND; in fuse_conn_init()
702 fc->congestion_threshold = FUSE_DEFAULT_CONGESTION_THRESHOLD; in fuse_conn_init()
703 atomic64_set(&fc->khctr, 0); in fuse_conn_init()
704 fc->polled_files = RB_ROOT; in fuse_conn_init()
705 fc->blocked = 0; in fuse_conn_init()
706 fc->initialized = 0; in fuse_conn_init()
707 fc->connected = 1; in fuse_conn_init()
708 atomic64_set(&fc->attr_version, 1); in fuse_conn_init()
709 get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key)); in fuse_conn_init()
710 fc->pid_ns = get_pid_ns(task_active_pid_ns(current)); in fuse_conn_init()
711 fc->user_ns = get_user_ns(user_ns); in fuse_conn_init()
712 fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ; in fuse_conn_init()
713 fc->max_pages_limit = FUSE_MAX_MAX_PAGES; in fuse_conn_init()
715 INIT_LIST_HEAD(&fc->mounts); in fuse_conn_init()
716 list_add(&fm->fc_entry, &fc->mounts); in fuse_conn_init()
717 fm->fc = fc; in fuse_conn_init()
722 void fuse_conn_put(struct fuse_conn *fc) in fuse_conn_put() argument
724 if (refcount_dec_and_test(&fc->count)) { in fuse_conn_put()
725 struct fuse_iqueue *fiq = &fc->iq; in fuse_conn_put()
728 fuse_dax_conn_free(fc); in fuse_conn_put()
731 put_pid_ns(fc->pid_ns); in fuse_conn_put()
732 put_user_ns(fc->user_ns); in fuse_conn_put()
733 fc->release(fc); in fuse_conn_put()
738 struct fuse_conn *fuse_conn_get(struct fuse_conn *fc) in fuse_conn_get() argument
740 refcount_inc(&fc->count); in fuse_conn_get()
741 return fc; in fuse_conn_get()
748 if (fm->fc) in fuse_mount_put()
749 fuse_conn_put(fm->fc); in fuse_mount_put()
781 struct fuse_conn *fc = get_fuse_conn_super(sb); in fuse_get_dentry() local
794 if (!fc->export_support) in fuse_get_dentry()
888 struct fuse_conn *fc = get_fuse_conn(child_inode); in fuse_get_parent() local
895 if (!fc->export_support) in fuse_get_parent()
958 static void process_init_limits(struct fuse_conn *fc, struct fuse_init_out *arg) in process_init_limits() argument
968 spin_lock(&fc->bg_lock); in process_init_limits()
970 fc->max_background = arg->max_background; in process_init_limits()
972 if (!cap_sys_admin && fc->max_background > max_user_bgreq) in process_init_limits()
973 fc->max_background = max_user_bgreq; in process_init_limits()
976 fc->congestion_threshold = arg->congestion_threshold; in process_init_limits()
979 fc->congestion_threshold > max_user_congthresh) in process_init_limits()
980 fc->congestion_threshold = max_user_congthresh; in process_init_limits()
982 spin_unlock(&fc->bg_lock); in process_init_limits()
994 struct fuse_conn *fc = fm->fc; in process_init_reply() local
1004 process_init_limits(fc, arg); in process_init_reply()
1009 fc->async_read = 1; in process_init_reply()
1011 fc->no_lock = 1; in process_init_reply()
1014 fc->no_flock = 1; in process_init_reply()
1017 fc->no_flock = 1; in process_init_reply()
1020 fc->atomic_o_trunc = 1; in process_init_reply()
1024 fc->export_support = 1; in process_init_reply()
1027 fc->big_writes = 1; in process_init_reply()
1029 fc->dont_mask = 1; in process_init_reply()
1031 fc->auto_inval_data = 1; in process_init_reply()
1033 fc->explicit_inval_data = 1; in process_init_reply()
1035 fc->do_readdirplus = 1; in process_init_reply()
1037 fc->readdirplus_auto = 1; in process_init_reply()
1040 fc->async_dio = 1; in process_init_reply()
1042 fc->writeback_cache = 1; in process_init_reply()
1044 fc->parallel_dirops = 1; in process_init_reply()
1046 fc->handle_killpriv = 1; in process_init_reply()
1050 fc->default_permissions = 1; in process_init_reply()
1051 fc->posix_acl = 1; in process_init_reply()
1055 fc->cache_symlinks = 1; in process_init_reply()
1057 fc->abort_err = 1; in process_init_reply()
1059 fc->max_pages = in process_init_reply()
1060 min_t(unsigned int, fc->max_pages_limit, in process_init_reply()
1065 !fuse_dax_check_alignment(fc, arg->map_alignment)) { in process_init_reply()
1069 ra_pages = fc->max_read / PAGE_SIZE; in process_init_reply()
1070 fc->no_lock = 1; in process_init_reply()
1071 fc->no_flock = 1; in process_init_reply()
1076 fc->minor = arg->minor; in process_init_reply()
1077 fc->max_write = arg->minor < 5 ? 4096 : arg->max_write; in process_init_reply()
1078 fc->max_write = max_t(unsigned, 4096, fc->max_write); in process_init_reply()
1079 fc->conn_init = 1; in process_init_reply()
1084 fc->conn_init = 0; in process_init_reply()
1085 fc->conn_error = 1; in process_init_reply()
1088 fuse_set_initialized(fc); in process_init_reply()
1089 wake_up_all(&fc->blocked_waitq); in process_init_reply()
1112 if (fm->fc->dax) in fuse_send_init()
1115 if (fm->fc->auto_submounts) in fuse_send_init()
1138 void fuse_free_conn(struct fuse_conn *fc) in fuse_free_conn() argument
1140 WARN_ON(!list_empty(&fc->devices)); in fuse_free_conn()
1141 kfree_rcu(fc, rcu); in fuse_free_conn()
1145 static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb) in fuse_bdi_init() argument
1159 err = super_setup_bdi_name(sb, "%u:%u%s", MAJOR(fc->dev), in fuse_bdi_init()
1160 MINOR(fc->dev), suffix); in fuse_bdi_init()
1207 void fuse_dev_install(struct fuse_dev *fud, struct fuse_conn *fc) in fuse_dev_install() argument
1209 fud->fc = fuse_conn_get(fc); in fuse_dev_install()
1210 spin_lock(&fc->lock); in fuse_dev_install()
1211 list_add_tail(&fud->entry, &fc->devices); in fuse_dev_install()
1212 spin_unlock(&fc->lock); in fuse_dev_install()
1216 struct fuse_dev *fuse_dev_alloc_install(struct fuse_conn *fc) in fuse_dev_alloc_install() argument
1224 fuse_dev_install(fud, fc); in fuse_dev_alloc_install()
1231 struct fuse_conn *fc = fud->fc; in fuse_dev_free() local
1233 if (fc) { in fuse_dev_free()
1234 spin_lock(&fc->lock); in fuse_dev_free()
1236 spin_unlock(&fc->lock); in fuse_dev_free()
1238 fuse_conn_put(fc); in fuse_dev_free()
1330 struct fuse_conn *fc = fm->fc; in fuse_fill_super_common() local
1355 err = fuse_dax_conn_alloc(fc, ctx->dax_dev); in fuse_fill_super_common()
1362 fud = fuse_dev_alloc_install(fc); in fuse_fill_super_common()
1367 fc->dev = sb->s_dev; in fuse_fill_super_common()
1369 err = fuse_bdi_init(fc, sb); in fuse_fill_super_common()
1375 fc->dont_mask = 1; in fuse_fill_super_common()
1378 fc->default_permissions = ctx->default_permissions; in fuse_fill_super_common()
1379 fc->allow_other = ctx->allow_other; in fuse_fill_super_common()
1380 fc->user_id = ctx->user_id; in fuse_fill_super_common()
1381 fc->group_id = ctx->group_id; in fuse_fill_super_common()
1382 fc->legacy_opts_show = ctx->legacy_opts_show; in fuse_fill_super_common()
1383 fc->max_read = max_t(unsigned int, 4096, ctx->max_read); in fuse_fill_super_common()
1384 fc->destroy = ctx->destroy; in fuse_fill_super_common()
1385 fc->no_control = ctx->no_control; in fuse_fill_super_common()
1386 fc->no_force_umount = ctx->no_force_umount; in fuse_fill_super_common()
1402 err = fuse_ctl_add_conn(fc); in fuse_fill_super_common()
1406 list_add_tail(&fc->entry, &fuse_conn_list); in fuse_fill_super_common()
1421 fuse_dax_conn_free(fc); in fuse_fill_super_common()
1432 struct fuse_conn *fc; in fuse_fill_super() local
1449 fc = kmalloc(sizeof(*fc), GFP_KERNEL); in fuse_fill_super()
1451 if (!fc) in fuse_fill_super()
1456 kfree(fc); in fuse_fill_super()
1460 fuse_conn_init(fc, fm, sb->s_user_ns, &fuse_dev_fiq_ops, NULL); in fuse_fill_super()
1461 fc->release = fuse_free_conn; in fuse_fill_super()
1486 static int fuse_get_tree(struct fs_context *fc) in fuse_get_tree() argument
1488 struct fuse_fs_context *ctx = fc->fs_private; in fuse_get_tree()
1496 return get_tree_bdev(fc, fuse_fill_super); in fuse_get_tree()
1499 return get_tree_nodev(fc, fuse_fill_super); in fuse_get_tree()
1512 static int fuse_init_fs_context(struct fs_context *fc) in fuse_init_fs_context() argument
1525 if (fc->fs_type == &fuseblk_fs_type) { in fuse_init_fs_context()
1531 fc->fs_private = ctx; in fuse_init_fs_context()
1532 fc->ops = &fuse_context_ops; in fuse_init_fs_context()
1538 struct fuse_conn *fc = fm->fc; in fuse_mount_remove() local
1541 down_write(&fc->killsb); in fuse_mount_remove()
1543 if (list_empty(&fc->mounts)) in fuse_mount_remove()
1545 up_write(&fc->killsb); in fuse_mount_remove()
1553 struct fuse_conn *fc = fm->fc; in fuse_conn_destroy() local
1555 if (fc->destroy) in fuse_conn_destroy()
1558 fuse_abort_conn(fc); in fuse_conn_destroy()
1559 fuse_wait_aborted(fc); in fuse_conn_destroy()
1561 if (!list_empty(&fc->entry)) { in fuse_conn_destroy()
1563 list_del(&fc->entry); in fuse_conn_destroy()
1564 fuse_ctl_remove_conn(fc); in fuse_conn_destroy()