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7c673cae FG |
1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright (c) Intel Corporation. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * * Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * * Neither the name of Intel Corporation nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | */ | |
7c673cae | 33 | |
11fdf7f2 TL |
34 | #include "spdk/stdinc.h" |
35 | ||
36 | #define FUSE_USE_VERSION 30 | |
7c673cae FG |
37 | #include "fuse3/fuse.h" |
38 | #include "fuse3/fuse_lowlevel.h" | |
39 | ||
7c673cae FG |
40 | #include "spdk/blobfs.h" |
41 | #include "spdk/bdev.h" | |
42 | #include "spdk/event.h" | |
11fdf7f2 | 43 | #include "spdk/thread.h" |
7c673cae FG |
44 | #include "spdk/blob_bdev.h" |
45 | #include "spdk/log.h" | |
46 | ||
47 | struct fuse *g_fuse; | |
48 | char *g_bdev_name; | |
49 | char *g_mountpoint; | |
50 | pthread_t g_fuse_thread; | |
51 | ||
52 | struct spdk_bs_dev *g_bs_dev; | |
53 | struct spdk_filesystem *g_fs; | |
9f95a23c | 54 | struct spdk_fs_thread_ctx *g_channel; |
7c673cae FG |
55 | struct spdk_file *g_file; |
56 | int g_fserrno; | |
57 | int g_fuse_argc = 0; | |
58 | char **g_fuse_argv = NULL; | |
59 | ||
60 | static void | |
61 | __call_fn(void *arg1, void *arg2) | |
62 | { | |
63 | fs_request_fn fn; | |
64 | ||
65 | fn = (fs_request_fn)arg1; | |
66 | fn(arg2); | |
67 | } | |
68 | ||
69 | static void | |
70 | __send_request(fs_request_fn fn, void *arg) | |
71 | { | |
72 | struct spdk_event *event; | |
73 | ||
74 | event = spdk_event_allocate(0, __call_fn, (void *)fn, arg); | |
75 | spdk_event_call(event); | |
76 | } | |
77 | ||
78 | static int | |
79 | spdk_fuse_getattr(const char *path, struct stat *stbuf, struct fuse_file_info *fi) | |
80 | { | |
81 | struct spdk_file_stat stat; | |
82 | int rc; | |
83 | ||
84 | if (!strcmp(path, "/")) { | |
85 | stbuf->st_mode = S_IFDIR | 0755; | |
86 | stbuf->st_nlink = 2; | |
87 | return 0; | |
88 | } | |
89 | ||
11fdf7f2 | 90 | rc = spdk_fs_file_stat(g_fs, g_channel, path, &stat); |
7c673cae FG |
91 | if (rc == 0) { |
92 | stbuf->st_mode = S_IFREG | 0644; | |
93 | stbuf->st_nlink = 1; | |
94 | stbuf->st_size = stat.size; | |
95 | } | |
96 | ||
97 | return rc; | |
98 | } | |
99 | ||
100 | static int | |
101 | spdk_fuse_readdir(const char *path, void *buf, fuse_fill_dir_t filler, | |
102 | off_t offset, struct fuse_file_info *fi, | |
103 | enum fuse_readdir_flags flags) | |
104 | { | |
105 | struct spdk_file *file; | |
106 | const char *filename; | |
107 | spdk_fs_iter iter; | |
108 | ||
109 | filler(buf, ".", NULL, 0, 0); | |
110 | filler(buf, "..", NULL, 0, 0); | |
111 | ||
112 | iter = spdk_fs_iter_first(g_fs); | |
113 | while (iter != NULL) { | |
114 | file = spdk_fs_iter_get_file(iter); | |
115 | iter = spdk_fs_iter_next(iter); | |
116 | filename = spdk_file_get_name(file); | |
11fdf7f2 | 117 | filler(buf, &filename[1], NULL, 0, 0); |
7c673cae FG |
118 | } |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
123 | static int | |
124 | spdk_fuse_mknod(const char *path, mode_t mode, dev_t rdev) | |
125 | { | |
11fdf7f2 | 126 | return spdk_fs_create_file(g_fs, g_channel, path); |
7c673cae FG |
127 | } |
128 | ||
129 | static int | |
130 | spdk_fuse_unlink(const char *path) | |
131 | { | |
11fdf7f2 | 132 | return spdk_fs_delete_file(g_fs, g_channel, path); |
7c673cae FG |
133 | } |
134 | ||
135 | static int | |
136 | spdk_fuse_truncate(const char *path, off_t size, struct fuse_file_info *fi) | |
137 | { | |
138 | struct spdk_file *file; | |
139 | int rc; | |
140 | ||
11fdf7f2 TL |
141 | rc = spdk_fs_open_file(g_fs, g_channel, path, 0, &file); |
142 | if (rc != 0) { | |
143 | return -rc; | |
144 | } | |
145 | ||
146 | rc = spdk_file_truncate(file, g_channel, size); | |
7c673cae FG |
147 | if (rc != 0) { |
148 | return -rc; | |
149 | } | |
150 | ||
7c673cae FG |
151 | spdk_file_close(file, g_channel); |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int | |
157 | spdk_fuse_utimens(const char *path, const struct timespec tv[2], struct fuse_file_info *fi) | |
158 | { | |
159 | return 0; | |
160 | } | |
161 | ||
162 | static int | |
163 | spdk_fuse_open(const char *path, struct fuse_file_info *info) | |
164 | { | |
165 | struct spdk_file *file; | |
166 | int rc; | |
167 | ||
11fdf7f2 | 168 | rc = spdk_fs_open_file(g_fs, g_channel, path, 0, &file); |
7c673cae FG |
169 | if (rc != 0) { |
170 | return -rc; | |
171 | } | |
172 | ||
173 | info->fh = (uintptr_t)file; | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static int | |
178 | spdk_fuse_release(const char *path, struct fuse_file_info *info) | |
179 | { | |
180 | struct spdk_file *file = (struct spdk_file *)info->fh; | |
181 | ||
182 | return spdk_file_close(file, g_channel); | |
183 | } | |
184 | ||
185 | static int | |
186 | spdk_fuse_read(const char *path, char *buf, size_t len, off_t offset, struct fuse_file_info *info) | |
187 | { | |
188 | struct spdk_file *file = (struct spdk_file *)info->fh; | |
189 | ||
190 | return spdk_file_read(file, g_channel, buf, offset, len); | |
191 | } | |
192 | ||
193 | static int | |
194 | spdk_fuse_write(const char *path, const char *buf, size_t len, off_t offset, | |
195 | struct fuse_file_info *info) | |
196 | { | |
197 | struct spdk_file *file = (struct spdk_file *)info->fh; | |
198 | int rc; | |
199 | ||
200 | rc = spdk_file_write(file, g_channel, (void *)buf, offset, len); | |
201 | if (rc == 0) { | |
202 | return len; | |
203 | } else { | |
204 | return rc; | |
205 | } | |
206 | } | |
207 | ||
208 | static int | |
209 | spdk_fuse_flush(const char *path, struct fuse_file_info *info) | |
210 | { | |
211 | return 0; | |
212 | } | |
213 | ||
214 | static int | |
215 | spdk_fuse_fsync(const char *path, int datasync, struct fuse_file_info *info) | |
216 | { | |
217 | return 0; | |
218 | } | |
219 | ||
220 | static int | |
221 | spdk_fuse_rename(const char *old_path, const char *new_path, unsigned int flags) | |
222 | { | |
11fdf7f2 | 223 | return spdk_fs_rename_file(g_fs, g_channel, old_path, new_path); |
7c673cae FG |
224 | } |
225 | ||
226 | static struct fuse_operations spdk_fuse_oper = { | |
227 | .getattr = spdk_fuse_getattr, | |
228 | .readdir = spdk_fuse_readdir, | |
229 | .mknod = spdk_fuse_mknod, | |
230 | .unlink = spdk_fuse_unlink, | |
231 | .truncate = spdk_fuse_truncate, | |
232 | .utimens = spdk_fuse_utimens, | |
233 | .open = spdk_fuse_open, | |
234 | .release = spdk_fuse_release, | |
235 | .read = spdk_fuse_read, | |
236 | .write = spdk_fuse_write, | |
237 | .flush = spdk_fuse_flush, | |
238 | .fsync = spdk_fuse_fsync, | |
239 | .rename = spdk_fuse_rename, | |
240 | }; | |
241 | ||
242 | static void | |
243 | construct_targets(void) | |
244 | { | |
245 | struct spdk_bdev *bdev; | |
246 | ||
247 | bdev = spdk_bdev_get_by_name(g_bdev_name); | |
248 | if (bdev == NULL) { | |
249 | SPDK_ERRLOG("bdev %s not found\n", g_bdev_name); | |
250 | exit(1); | |
251 | } | |
252 | ||
11fdf7f2 | 253 | g_bs_dev = spdk_bdev_create_bs_dev(bdev, NULL, NULL); |
7c673cae | 254 | |
11fdf7f2 | 255 | printf("Mounting BlobFS on bdev %s\n", spdk_bdev_get_name(bdev)); |
7c673cae FG |
256 | } |
257 | ||
258 | static void | |
259 | start_fuse_fn(void *arg1, void *arg2) | |
260 | { | |
261 | struct fuse_args args = FUSE_ARGS_INIT(g_fuse_argc, g_fuse_argv); | |
262 | int rc; | |
263 | struct fuse_cmdline_opts opts = {}; | |
264 | ||
265 | g_fuse_thread = pthread_self(); | |
266 | rc = fuse_parse_cmdline(&args, &opts); | |
267 | if (rc != 0) { | |
268 | spdk_app_stop(-1); | |
269 | fuse_opt_free_args(&args); | |
270 | return; | |
271 | } | |
272 | g_fuse = fuse_new(&args, &spdk_fuse_oper, sizeof(spdk_fuse_oper), NULL); | |
273 | fuse_opt_free_args(&args); | |
274 | ||
275 | rc = fuse_mount(g_fuse, g_mountpoint); | |
276 | if (rc != 0) { | |
277 | spdk_app_stop(-1); | |
278 | return; | |
279 | } | |
280 | ||
281 | fuse_daemonize(true /* true = run in foreground */); | |
282 | ||
283 | fuse_loop(g_fuse); | |
284 | ||
285 | fuse_unmount(g_fuse); | |
286 | fuse_destroy(g_fuse); | |
287 | } | |
288 | ||
289 | static void | |
290 | init_cb(void *ctx, struct spdk_filesystem *fs, int fserrno) | |
291 | { | |
292 | struct spdk_event *event; | |
293 | ||
294 | g_fs = fs; | |
9f95a23c | 295 | g_channel = spdk_fs_alloc_thread_ctx(g_fs); |
7c673cae FG |
296 | event = spdk_event_allocate(1, start_fuse_fn, NULL, NULL); |
297 | spdk_event_call(event); | |
298 | } | |
299 | ||
300 | static void | |
9f95a23c | 301 | spdk_fuse_run(void *arg1) |
7c673cae FG |
302 | { |
303 | construct_targets(); | |
304 | spdk_fs_load(g_bs_dev, __send_request, init_cb, NULL); | |
305 | } | |
306 | ||
307 | static void | |
308 | shutdown_cb(void *ctx, int fserrno) | |
309 | { | |
310 | fuse_session_exit(fuse_get_session(g_fuse)); | |
311 | pthread_kill(g_fuse_thread, SIGINT); | |
9f95a23c | 312 | spdk_fs_free_thread_ctx(g_channel); |
7c673cae FG |
313 | spdk_app_stop(0); |
314 | } | |
315 | ||
316 | static void | |
317 | spdk_fuse_shutdown(void) | |
318 | { | |
319 | spdk_fs_unload(g_fs, shutdown_cb, NULL); | |
320 | } | |
321 | ||
322 | int main(int argc, char **argv) | |
323 | { | |
324 | struct spdk_app_opts opts = {}; | |
11fdf7f2 | 325 | int rc = 0; |
7c673cae FG |
326 | |
327 | if (argc < 4) { | |
328 | fprintf(stderr, "usage: %s <conffile> <bdev name> <mountpoint>\n", argv[0]); | |
329 | exit(1); | |
330 | } | |
331 | ||
332 | spdk_app_opts_init(&opts); | |
333 | opts.name = "spdk_fuse"; | |
334 | opts.config_file = argv[1]; | |
335 | opts.reactor_mask = "0x3"; | |
7c673cae | 336 | opts.shutdown_cb = spdk_fuse_shutdown; |
7c673cae FG |
337 | |
338 | g_bdev_name = argv[2]; | |
339 | g_mountpoint = argv[3]; | |
340 | g_fuse_argc = argc - 2; | |
341 | g_fuse_argv = &argv[2]; | |
342 | ||
9f95a23c | 343 | rc = spdk_app_start(&opts, spdk_fuse_run, NULL); |
7c673cae FG |
344 | spdk_app_fini(); |
345 | ||
11fdf7f2 | 346 | return rc; |
7c673cae | 347 | } |