1 files changed, 348 insertions, 0 deletions
diff --git a/src/spdk/test/blobfs/fuse/fuse.c b/src/spdk/test/blobfs/fuse/fuse.c
new file mode 100644
index 00000000..9d11dfa0
--- /dev/null
+++ b/src/spdk/test/blobfs/fuse/fuse.c
@@ -0,0 +1,348 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) Intel Corporation.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "spdk/stdinc.h"
+
+#define FUSE_USE_VERSION 30
+#include "fuse3/fuse.h"
+#include "fuse3/fuse_lowlevel.h"
+
+#include "spdk/blobfs.h"
+#include "spdk/bdev.h"
+#include "spdk/event.h"
+#include "spdk/thread.h"
+#include "spdk/blob_bdev.h"
+#include "spdk/log.h"
+
+struct fuse *g_fuse;
+char *g_bdev_name;
+char *g_mountpoint;
+pthread_t g_fuse_thread;
+
+struct spdk_bs_dev *g_bs_dev;
+struct spdk_filesystem *g_fs;
+struct spdk_io_channel *g_channel;
+struct spdk_file *g_file;
+int g_fserrno;
+int g_fuse_argc = 0;
+char **g_fuse_argv = NULL;
+
+static void
+__call_fn(void *arg1, void *arg2)
+{
+	fs_request_fn fn;
+
+	fn = (fs_request_fn)arg1;
+	fn(arg2);
+}
+
+static void
+__send_request(fs_request_fn fn, void *arg)
+{
+	struct spdk_event *event;
+
+	event = spdk_event_allocate(0, __call_fn, (void *)fn, arg);
+	spdk_event_call(event);
+}
+
+static int
+spdk_fuse_getattr(const char *path, struct stat *stbuf, struct fuse_file_info *fi)
+{
+	struct spdk_file_stat stat;
+	int rc;
+
+	if (!strcmp(path, "/")) {
+		stbuf->st_mode = S_IFDIR | 0755;
+		stbuf->st_nlink = 2;
+		return 0;
+	}
+
+	rc = spdk_fs_file_stat(g_fs, g_channel, path, &stat);
+	if (rc == 0) {
+		stbuf->st_mode = S_IFREG | 0644;
+		stbuf->st_nlink = 1;
+		stbuf->st_size = stat.size;
+	}
+
+	return rc;
+}
+
+static int
+spdk_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
+		  off_t offset, struct fuse_file_info *fi,
+		  enum fuse_readdir_flags flags)
+{
+	struct spdk_file *file;
+	const char *filename;
+	spdk_fs_iter iter;
+
+	filler(buf, ".", NULL, 0, 0);
+	filler(buf, "..", NULL, 0, 0);
+
+	iter = spdk_fs_iter_first(g_fs);
+	while (iter != NULL) {
+		file = spdk_fs_iter_get_file(iter);
+		iter = spdk_fs_iter_next(iter);
+		filename = spdk_file_get_name(file);
+		filler(buf, &filename[1], NULL, 0, 0);
+	}
+
+	return 0;
+}
+
+static int
+spdk_fuse_mknod(const char *path, mode_t mode, dev_t rdev)
+{
+	return spdk_fs_create_file(g_fs, g_channel, path);
+}
+
+static int
+spdk_fuse_unlink(const char *path)
+{
+	return spdk_fs_delete_file(g_fs, g_channel, path);
+}
+
+static int
+spdk_fuse_truncate(const char *path, off_t size, struct fuse_file_info *fi)
+{
+	struct spdk_file *file;
+	int rc;
+
+	rc = spdk_fs_open_file(g_fs, g_channel, path, 0, &file);
+	if (rc != 0) {
+		return -rc;
+	}
+
+	rc = spdk_file_truncate(file, g_channel, size);
+	if (rc != 0) {
+		return -rc;
+	}
+
+	spdk_file_close(file, g_channel);
+
+	return 0;
+}
+
+static int
+spdk_fuse_utimens(const char *path, const struct timespec tv[2], struct fuse_file_info *fi)
+{
+	return 0;
+}
+
+static int
+spdk_fuse_open(const char *path, struct fuse_file_info *info)
+{
+	struct spdk_file *file;
+	int rc;
+
+	rc = spdk_fs_open_file(g_fs, g_channel, path, 0, &file);
+	if (rc != 0) {
+		return -rc;
+	}
+
+	info->fh = (uintptr_t)file;
+	return 0;
+}
+
+static int
+spdk_fuse_release(const char *path, struct fuse_file_info *info)
+{
+	struct spdk_file *file = (struct spdk_file *)info->fh;
+
+	return spdk_file_close(file, g_channel);
+}
+
+static int
+spdk_fuse_read(const char *path, char *buf, size_t len, off_t offset, struct fuse_file_info *info)
+{
+	struct spdk_file *file = (struct spdk_file *)info->fh;
+
+	return spdk_file_read(file, g_channel, buf, offset, len);
+}
+
+static int
+spdk_fuse_write(const char *path, const char *buf, size_t len, off_t offset,
+		struct fuse_file_info *info)
+{
+	struct spdk_file *file = (struct spdk_file *)info->fh;
+	int rc;
+
+	rc = spdk_file_write(file, g_channel, (void *)buf, offset, len);
+	if (rc == 0) {
+		return len;
+	} else {
+		return rc;
+	}
+}
+
+static int
+spdk_fuse_flush(const char *path, struct fuse_file_info *info)
+{
+	return 0;
+}
+
+static int
+spdk_fuse_fsync(const char *path, int datasync, struct fuse_file_info *info)
+{
+	return 0;
+}
+
+static int
+spdk_fuse_rename(const char *old_path, const char *new_path, unsigned int flags)
+{
+	return spdk_fs_rename_file(g_fs, g_channel, old_path, new_path);
+}
+
+static struct fuse_operations spdk_fuse_oper = {
+	.getattr	= spdk_fuse_getattr,
+	.readdir	= spdk_fuse_readdir,
+	.mknod		= spdk_fuse_mknod,
+	.unlink		= spdk_fuse_unlink,
+	.truncate	= spdk_fuse_truncate,
+	.utimens	= spdk_fuse_utimens,
+	.open		= spdk_fuse_open,
+	.release	= spdk_fuse_release,
+	.read		= spdk_fuse_read,
+	.write		= spdk_fuse_write,
+	.flush		= spdk_fuse_flush,
+	.fsync		= spdk_fuse_fsync,
+	.rename		= spdk_fuse_rename,
+};
+
+static void
+construct_targets(void)
+{
+	struct spdk_bdev *bdev;
+
+	bdev = spdk_bdev_get_by_name(g_bdev_name);
+	if (bdev == NULL) {
+		SPDK_ERRLOG("bdev %s not found\n", g_bdev_name);
+		exit(1);
+	}
+
+	g_bs_dev = spdk_bdev_create_bs_dev(bdev, NULL, NULL);
+
+	printf("Mounting BlobFS on bdev %s\n", spdk_bdev_get_name(bdev));
+}
+
+static void
+start_fuse_fn(void *arg1, void *arg2)
+{
+	struct fuse_args args = FUSE_ARGS_INIT(g_fuse_argc, g_fuse_argv);
+	int rc;
+	struct fuse_cmdline_opts opts = {};
+
+	g_fuse_thread = pthread_self();
+	rc = fuse_parse_cmdline(&args, &opts);
+	if (rc != 0) {
+		spdk_app_stop(-1);
+		fuse_opt_free_args(&args);
+		return;
+	}
+	g_fuse = fuse_new(&args, &spdk_fuse_oper, sizeof(spdk_fuse_oper), NULL);
+	fuse_opt_free_args(&args);
+
+	rc = fuse_mount(g_fuse, g_mountpoint);
+	if (rc != 0) {
+		spdk_app_stop(-1);
+		return;
+	}
+
+	fuse_daemonize(true /* true = run in foreground */);
+
+	fuse_loop(g_fuse);
+
+	fuse_unmount(g_fuse);
+	fuse_destroy(g_fuse);
+}
+
+static void
+init_cb(void *ctx, struct spdk_filesystem *fs, int fserrno)
+{
+	struct spdk_event *event;
+
+	g_fs = fs;
+	g_channel = spdk_fs_alloc_io_channel_sync(g_fs);
+	event = spdk_event_allocate(1, start_fuse_fn, NULL, NULL);
+	spdk_event_call(event);
+}
+
+static void
+spdk_fuse_run(void *arg1, void *arg2)
+{
+	construct_targets();
+	spdk_fs_load(g_bs_dev, __send_request, init_cb, NULL);
+}
+
+static void
+shutdown_cb(void *ctx, int fserrno)
+{
+	fuse_session_exit(fuse_get_session(g_fuse));
+	pthread_kill(g_fuse_thread, SIGINT);
+	spdk_fs_free_io_channel(g_channel);
+	spdk_app_stop(0);
+}
+
+static void
+spdk_fuse_shutdown(void)
+{
+	spdk_fs_unload(g_fs, shutdown_cb, NULL);
+}
+
+int main(int argc, char **argv)
+{
+	struct spdk_app_opts opts = {};
+	int rc = 0;
+
+	if (argc < 4) {
+		fprintf(stderr, "usage: %s <conffile> <bdev name> <mountpoint>\n", argv[0]);
+		exit(1);
+	}
+
+	spdk_app_opts_init(&opts);
+	opts.name = "spdk_fuse";
+	opts.config_file = argv[1];
+	opts.reactor_mask = "0x3";
+	opts.mem_size = 6144;
+	opts.shutdown_cb = spdk_fuse_shutdown;
+
+	g_bdev_name = argv[2];
+	g_mountpoint = argv[3];
+	g_fuse_argc = argc - 2;
+	g_fuse_argv = &argv[2];
+
+	rc = spdk_app_start(&opts, spdk_fuse_run, NULL, NULL);
+	spdk_app_fini();
+
+	return rc;
+}