bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1 | /* |
| 2 | FUSE: Filesystem in Userspace |
| 3 | Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> |
| 4 | |
| 5 | This program can be distributed under the terms of the GNU LGPLv2. |
| 6 | See the file COPYING.LIB |
| 7 | */ |
| 8 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 9 | #define _GNU_SOURCE |
| 10 | |
| 11 | #include "config.h" |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 12 | #include "fuse_i.h" |
| 13 | #include "fuse_kernel.h" |
| 14 | #include "fuse_opt.h" |
| 15 | #include "fuse_misc.h" |
| 16 | #include "fuse_common_compat.h" |
| 17 | #include "fuse_lowlevel_compat.h" |
| 18 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 19 | #include <stdio.h> |
| 20 | #include <stdlib.h> |
| 21 | #include <stddef.h> |
| 22 | #include <string.h> |
| 23 | #include <unistd.h> |
| 24 | #include <limits.h> |
| 25 | #include <errno.h> |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 26 | #include <assert.h> |
Matt Mower | 523a059 | 2015-12-13 11:31:00 -0600 | [diff] [blame] | 27 | #include <sys/file.h> |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 28 | |
| 29 | #ifndef F_LINUX_SPECIFIC_BASE |
| 30 | #define F_LINUX_SPECIFIC_BASE 1024 |
| 31 | #endif |
| 32 | #ifndef F_SETPIPE_SZ |
| 33 | #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) |
| 34 | #endif |
| 35 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 36 | |
| 37 | #define PARAM(inarg) (((char *)(inarg)) + sizeof(*(inarg))) |
| 38 | #define OFFSET_MAX 0x7fffffffffffffffLL |
| 39 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 40 | #define container_of(ptr, type, member) ({ \ |
| 41 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ |
| 42 | (type *)( (char *)__mptr - offsetof(type,member) );}) |
| 43 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 44 | struct fuse_pollhandle { |
| 45 | uint64_t kh; |
| 46 | struct fuse_chan *ch; |
| 47 | struct fuse_ll *f; |
| 48 | }; |
| 49 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 50 | static size_t pagesize; |
| 51 | |
| 52 | static __attribute__((constructor)) void fuse_ll_init_pagesize(void) |
| 53 | { |
| 54 | pagesize = getpagesize(); |
| 55 | } |
| 56 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 57 | static void convert_stat(const struct stat *stbuf, struct fuse_attr *attr) |
| 58 | { |
| 59 | attr->ino = stbuf->st_ino; |
| 60 | attr->mode = stbuf->st_mode; |
| 61 | attr->nlink = stbuf->st_nlink; |
| 62 | attr->uid = stbuf->st_uid; |
| 63 | attr->gid = stbuf->st_gid; |
| 64 | attr->rdev = stbuf->st_rdev; |
| 65 | attr->size = stbuf->st_size; |
| 66 | attr->blksize = stbuf->st_blksize; |
| 67 | attr->blocks = stbuf->st_blocks; |
| 68 | attr->atime = stbuf->st_atime; |
| 69 | attr->mtime = stbuf->st_mtime; |
| 70 | attr->ctime = stbuf->st_ctime; |
| 71 | attr->atimensec = ST_ATIM_NSEC(stbuf); |
| 72 | attr->mtimensec = ST_MTIM_NSEC(stbuf); |
| 73 | attr->ctimensec = ST_CTIM_NSEC(stbuf); |
| 74 | } |
| 75 | |
| 76 | static void convert_attr(const struct fuse_setattr_in *attr, struct stat *stbuf) |
| 77 | { |
| 78 | stbuf->st_mode = attr->mode; |
| 79 | stbuf->st_uid = attr->uid; |
| 80 | stbuf->st_gid = attr->gid; |
| 81 | stbuf->st_size = attr->size; |
| 82 | stbuf->st_atime = attr->atime; |
| 83 | stbuf->st_mtime = attr->mtime; |
| 84 | ST_ATIM_NSEC_SET(stbuf, attr->atimensec); |
| 85 | ST_MTIM_NSEC_SET(stbuf, attr->mtimensec); |
| 86 | } |
| 87 | |
| 88 | static size_t iov_length(const struct iovec *iov, size_t count) |
| 89 | { |
| 90 | size_t seg; |
| 91 | size_t ret = 0; |
| 92 | |
| 93 | for (seg = 0; seg < count; seg++) |
| 94 | ret += iov[seg].iov_len; |
| 95 | return ret; |
| 96 | } |
| 97 | |
| 98 | static void list_init_req(struct fuse_req *req) |
| 99 | { |
| 100 | req->next = req; |
| 101 | req->prev = req; |
| 102 | } |
| 103 | |
| 104 | static void list_del_req(struct fuse_req *req) |
| 105 | { |
| 106 | struct fuse_req *prev = req->prev; |
| 107 | struct fuse_req *next = req->next; |
| 108 | prev->next = next; |
| 109 | next->prev = prev; |
| 110 | } |
| 111 | |
| 112 | static void list_add_req(struct fuse_req *req, struct fuse_req *next) |
| 113 | { |
| 114 | struct fuse_req *prev = next->prev; |
| 115 | req->next = next; |
| 116 | req->prev = prev; |
| 117 | prev->next = req; |
| 118 | next->prev = req; |
| 119 | } |
| 120 | |
| 121 | static void destroy_req(fuse_req_t req) |
| 122 | { |
| 123 | pthread_mutex_destroy(&req->lock); |
| 124 | free(req); |
| 125 | } |
| 126 | |
| 127 | void fuse_free_req(fuse_req_t req) |
| 128 | { |
| 129 | int ctr; |
| 130 | struct fuse_ll *f = req->f; |
| 131 | |
| 132 | pthread_mutex_lock(&f->lock); |
| 133 | req->u.ni.func = NULL; |
| 134 | req->u.ni.data = NULL; |
| 135 | list_del_req(req); |
| 136 | ctr = --req->ctr; |
| 137 | pthread_mutex_unlock(&f->lock); |
| 138 | if (!ctr) |
| 139 | destroy_req(req); |
| 140 | } |
| 141 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 142 | static struct fuse_req *fuse_ll_alloc_req(struct fuse_ll *f) |
| 143 | { |
| 144 | struct fuse_req *req; |
| 145 | |
| 146 | req = (struct fuse_req *) calloc(1, sizeof(struct fuse_req)); |
| 147 | if (req == NULL) { |
| 148 | fprintf(stderr, "fuse: failed to allocate request\n"); |
| 149 | } else { |
| 150 | req->f = f; |
| 151 | req->ctr = 1; |
| 152 | list_init_req(req); |
| 153 | fuse_mutex_init(&req->lock); |
| 154 | } |
| 155 | |
| 156 | return req; |
| 157 | } |
| 158 | |
| 159 | |
| 160 | static int fuse_send_msg(struct fuse_ll *f, struct fuse_chan *ch, |
| 161 | struct iovec *iov, int count) |
| 162 | { |
| 163 | struct fuse_out_header *out = iov[0].iov_base; |
| 164 | |
| 165 | out->len = iov_length(iov, count); |
| 166 | if (f->debug) { |
| 167 | if (out->unique == 0) { |
| 168 | fprintf(stderr, "NOTIFY: code=%d length=%u\n", |
| 169 | out->error, out->len); |
| 170 | } else if (out->error) { |
| 171 | fprintf(stderr, |
| 172 | " unique: %llu, error: %i (%s), outsize: %i\n", |
| 173 | (unsigned long long) out->unique, out->error, |
| 174 | strerror(-out->error), out->len); |
| 175 | } else { |
| 176 | fprintf(stderr, |
| 177 | " unique: %llu, success, outsize: %i\n", |
| 178 | (unsigned long long) out->unique, out->len); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | return fuse_chan_send(ch, iov, count); |
| 183 | } |
| 184 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 185 | int fuse_send_reply_iov_nofree(fuse_req_t req, int error, struct iovec *iov, |
| 186 | int count) |
| 187 | { |
| 188 | struct fuse_out_header out; |
| 189 | |
| 190 | if (error <= -1000 || error > 0) { |
| 191 | fprintf(stderr, "fuse: bad error value: %i\n", error); |
| 192 | error = -ERANGE; |
| 193 | } |
| 194 | |
| 195 | out.unique = req->unique; |
| 196 | out.error = error; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 197 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 198 | iov[0].iov_base = &out; |
| 199 | iov[0].iov_len = sizeof(struct fuse_out_header); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 200 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 201 | return fuse_send_msg(req->f, req->ch, iov, count); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | static int send_reply_iov(fuse_req_t req, int error, struct iovec *iov, |
| 205 | int count) |
| 206 | { |
| 207 | int res; |
| 208 | |
| 209 | res = fuse_send_reply_iov_nofree(req, error, iov, count); |
| 210 | fuse_free_req(req); |
| 211 | return res; |
| 212 | } |
| 213 | |
| 214 | static int send_reply(fuse_req_t req, int error, const void *arg, |
| 215 | size_t argsize) |
| 216 | { |
| 217 | struct iovec iov[2]; |
| 218 | int count = 1; |
| 219 | if (argsize) { |
| 220 | iov[1].iov_base = (void *) arg; |
| 221 | iov[1].iov_len = argsize; |
| 222 | count++; |
| 223 | } |
| 224 | return send_reply_iov(req, error, iov, count); |
| 225 | } |
| 226 | |
| 227 | int fuse_reply_iov(fuse_req_t req, const struct iovec *iov, int count) |
| 228 | { |
| 229 | int res; |
| 230 | struct iovec *padded_iov; |
| 231 | |
| 232 | padded_iov = malloc((count + 1) * sizeof(struct iovec)); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 233 | if (padded_iov == NULL) |
| 234 | return fuse_reply_err(req, ENOMEM); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 235 | |
| 236 | memcpy(padded_iov + 1, iov, count * sizeof(struct iovec)); |
| 237 | count++; |
| 238 | |
| 239 | res = send_reply_iov(req, 0, padded_iov, count); |
| 240 | free(padded_iov); |
| 241 | |
| 242 | return res; |
| 243 | } |
| 244 | |
| 245 | size_t fuse_dirent_size(size_t namelen) |
| 246 | { |
| 247 | return FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + namelen); |
| 248 | } |
| 249 | |
| 250 | char *fuse_add_dirent(char *buf, const char *name, const struct stat *stbuf, |
Matt Mower | 523a059 | 2015-12-13 11:31:00 -0600 | [diff] [blame] | 251 | loff_t off) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 252 | { |
| 253 | unsigned namelen = strlen(name); |
| 254 | unsigned entlen = FUSE_NAME_OFFSET + namelen; |
| 255 | unsigned entsize = fuse_dirent_size(namelen); |
| 256 | unsigned padlen = entsize - entlen; |
| 257 | struct fuse_dirent *dirent = (struct fuse_dirent *) buf; |
| 258 | |
| 259 | dirent->ino = stbuf->st_ino; |
| 260 | dirent->off = off; |
| 261 | dirent->namelen = namelen; |
| 262 | dirent->type = (stbuf->st_mode & 0170000) >> 12; |
| 263 | strncpy(dirent->name, name, namelen); |
| 264 | if (padlen) |
| 265 | memset(buf + entlen, 0, padlen); |
| 266 | |
| 267 | return buf + entsize; |
| 268 | } |
| 269 | |
| 270 | size_t fuse_add_direntry(fuse_req_t req, char *buf, size_t bufsize, |
Matt Mower | 523a059 | 2015-12-13 11:31:00 -0600 | [diff] [blame] | 271 | const char *name, const struct stat *stbuf, loff_t off) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 272 | { |
| 273 | size_t entsize; |
| 274 | |
| 275 | (void) req; |
| 276 | entsize = fuse_dirent_size(strlen(name)); |
| 277 | if (entsize <= bufsize && buf) |
| 278 | fuse_add_dirent(buf, name, stbuf, off); |
| 279 | return entsize; |
| 280 | } |
| 281 | |
| 282 | static void convert_statfs(const struct statvfs *stbuf, |
| 283 | struct fuse_kstatfs *kstatfs) |
| 284 | { |
| 285 | kstatfs->bsize = stbuf->f_bsize; |
| 286 | kstatfs->frsize = stbuf->f_frsize; |
| 287 | kstatfs->blocks = stbuf->f_blocks; |
| 288 | kstatfs->bfree = stbuf->f_bfree; |
| 289 | kstatfs->bavail = stbuf->f_bavail; |
| 290 | kstatfs->files = stbuf->f_files; |
| 291 | kstatfs->ffree = stbuf->f_ffree; |
| 292 | kstatfs->namelen = stbuf->f_namemax; |
| 293 | } |
| 294 | |
| 295 | static int send_reply_ok(fuse_req_t req, const void *arg, size_t argsize) |
| 296 | { |
| 297 | return send_reply(req, 0, arg, argsize); |
| 298 | } |
| 299 | |
| 300 | int fuse_reply_err(fuse_req_t req, int err) |
| 301 | { |
| 302 | return send_reply(req, -err, NULL, 0); |
| 303 | } |
| 304 | |
| 305 | void fuse_reply_none(fuse_req_t req) |
| 306 | { |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 307 | if (req->ch) |
| 308 | fuse_chan_send(req->ch, NULL, 0); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 309 | fuse_free_req(req); |
| 310 | } |
| 311 | |
| 312 | static unsigned long calc_timeout_sec(double t) |
| 313 | { |
| 314 | if (t > (double) ULONG_MAX) |
| 315 | return ULONG_MAX; |
| 316 | else if (t < 0.0) |
| 317 | return 0; |
| 318 | else |
| 319 | return (unsigned long) t; |
| 320 | } |
| 321 | |
| 322 | static unsigned int calc_timeout_nsec(double t) |
| 323 | { |
| 324 | double f = t - (double) calc_timeout_sec(t); |
| 325 | if (f < 0.0) |
| 326 | return 0; |
| 327 | else if (f >= 0.999999999) |
| 328 | return 999999999; |
| 329 | else |
| 330 | return (unsigned int) (f * 1.0e9); |
| 331 | } |
| 332 | |
| 333 | static void fill_entry(struct fuse_entry_out *arg, |
| 334 | const struct fuse_entry_param *e) |
| 335 | { |
| 336 | arg->nodeid = e->ino; |
| 337 | arg->generation = e->generation; |
| 338 | arg->entry_valid = calc_timeout_sec(e->entry_timeout); |
| 339 | arg->entry_valid_nsec = calc_timeout_nsec(e->entry_timeout); |
| 340 | arg->attr_valid = calc_timeout_sec(e->attr_timeout); |
| 341 | arg->attr_valid_nsec = calc_timeout_nsec(e->attr_timeout); |
| 342 | convert_stat(&e->attr, &arg->attr); |
| 343 | } |
| 344 | |
| 345 | static void fill_open(struct fuse_open_out *arg, |
| 346 | const struct fuse_file_info *f) |
| 347 | { |
| 348 | arg->fh = f->fh; |
| 349 | if (f->direct_io) |
| 350 | arg->open_flags |= FOPEN_DIRECT_IO; |
| 351 | if (f->keep_cache) |
| 352 | arg->open_flags |= FOPEN_KEEP_CACHE; |
| 353 | if (f->nonseekable) |
| 354 | arg->open_flags |= FOPEN_NONSEEKABLE; |
| 355 | } |
| 356 | |
| 357 | int fuse_reply_entry(fuse_req_t req, const struct fuse_entry_param *e) |
| 358 | { |
| 359 | struct fuse_entry_out arg; |
| 360 | size_t size = req->f->conn.proto_minor < 9 ? |
| 361 | FUSE_COMPAT_ENTRY_OUT_SIZE : sizeof(arg); |
| 362 | |
| 363 | /* before ABI 7.4 e->ino == 0 was invalid, only ENOENT meant |
| 364 | negative entry */ |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 365 | if (!e->ino && req->f->conn.proto_minor < 4) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 366 | return fuse_reply_err(req, ENOENT); |
| 367 | |
| 368 | memset(&arg, 0, sizeof(arg)); |
| 369 | fill_entry(&arg, e); |
| 370 | return send_reply_ok(req, &arg, size); |
| 371 | } |
| 372 | |
| 373 | int fuse_reply_create(fuse_req_t req, const struct fuse_entry_param *e, |
| 374 | const struct fuse_file_info *f) |
| 375 | { |
| 376 | char buf[sizeof(struct fuse_entry_out) + sizeof(struct fuse_open_out)]; |
| 377 | size_t entrysize = req->f->conn.proto_minor < 9 ? |
| 378 | FUSE_COMPAT_ENTRY_OUT_SIZE : sizeof(struct fuse_entry_out); |
| 379 | struct fuse_entry_out *earg = (struct fuse_entry_out *) buf; |
| 380 | struct fuse_open_out *oarg = (struct fuse_open_out *) (buf + entrysize); |
| 381 | |
| 382 | memset(buf, 0, sizeof(buf)); |
| 383 | fill_entry(earg, e); |
| 384 | fill_open(oarg, f); |
| 385 | return send_reply_ok(req, buf, |
| 386 | entrysize + sizeof(struct fuse_open_out)); |
| 387 | } |
| 388 | |
| 389 | int fuse_reply_attr(fuse_req_t req, const struct stat *attr, |
| 390 | double attr_timeout) |
| 391 | { |
| 392 | struct fuse_attr_out arg; |
| 393 | size_t size = req->f->conn.proto_minor < 9 ? |
| 394 | FUSE_COMPAT_ATTR_OUT_SIZE : sizeof(arg); |
| 395 | |
| 396 | memset(&arg, 0, sizeof(arg)); |
| 397 | arg.attr_valid = calc_timeout_sec(attr_timeout); |
| 398 | arg.attr_valid_nsec = calc_timeout_nsec(attr_timeout); |
| 399 | convert_stat(attr, &arg.attr); |
| 400 | |
| 401 | return send_reply_ok(req, &arg, size); |
| 402 | } |
| 403 | |
| 404 | int fuse_reply_readlink(fuse_req_t req, const char *linkname) |
| 405 | { |
| 406 | return send_reply_ok(req, linkname, strlen(linkname)); |
| 407 | } |
| 408 | |
| 409 | int fuse_reply_open(fuse_req_t req, const struct fuse_file_info *f) |
| 410 | { |
| 411 | struct fuse_open_out arg; |
| 412 | |
| 413 | memset(&arg, 0, sizeof(arg)); |
| 414 | fill_open(&arg, f); |
| 415 | return send_reply_ok(req, &arg, sizeof(arg)); |
| 416 | } |
| 417 | |
| 418 | int fuse_reply_write(fuse_req_t req, size_t count) |
| 419 | { |
| 420 | struct fuse_write_out arg; |
| 421 | |
| 422 | memset(&arg, 0, sizeof(arg)); |
| 423 | arg.size = count; |
| 424 | |
| 425 | return send_reply_ok(req, &arg, sizeof(arg)); |
| 426 | } |
| 427 | |
| 428 | int fuse_reply_buf(fuse_req_t req, const char *buf, size_t size) |
| 429 | { |
| 430 | return send_reply_ok(req, buf, size); |
| 431 | } |
| 432 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 433 | static int fuse_send_data_iov_fallback(struct fuse_ll *f, struct fuse_chan *ch, |
| 434 | struct iovec *iov, int iov_count, |
| 435 | struct fuse_bufvec *buf, |
| 436 | size_t len) |
| 437 | { |
| 438 | struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len); |
| 439 | void *mbuf; |
| 440 | int res; |
| 441 | |
| 442 | /* Optimize common case */ |
| 443 | if (buf->count == 1 && buf->idx == 0 && buf->off == 0 && |
| 444 | !(buf->buf[0].flags & FUSE_BUF_IS_FD)) { |
| 445 | /* FIXME: also avoid memory copy if there are multiple buffers |
| 446 | but none of them contain an fd */ |
| 447 | |
| 448 | iov[iov_count].iov_base = buf->buf[0].mem; |
| 449 | iov[iov_count].iov_len = len; |
| 450 | iov_count++; |
| 451 | return fuse_send_msg(f, ch, iov, iov_count); |
| 452 | } |
| 453 | |
| 454 | res = posix_memalign(&mbuf, pagesize, len); |
| 455 | if (res != 0) |
| 456 | return res; |
| 457 | |
| 458 | mem_buf.buf[0].mem = mbuf; |
| 459 | res = fuse_buf_copy(&mem_buf, buf, 0); |
| 460 | if (res < 0) { |
| 461 | free(mbuf); |
| 462 | return -res; |
| 463 | } |
| 464 | len = res; |
| 465 | |
| 466 | iov[iov_count].iov_base = mbuf; |
| 467 | iov[iov_count].iov_len = len; |
| 468 | iov_count++; |
| 469 | res = fuse_send_msg(f, ch, iov, iov_count); |
| 470 | free(mbuf); |
| 471 | |
| 472 | return res; |
| 473 | } |
| 474 | |
| 475 | struct fuse_ll_pipe { |
| 476 | size_t size; |
| 477 | int can_grow; |
| 478 | int pipe[2]; |
| 479 | }; |
| 480 | |
| 481 | static void fuse_ll_pipe_free(struct fuse_ll_pipe *llp) |
| 482 | { |
| 483 | close(llp->pipe[0]); |
| 484 | close(llp->pipe[1]); |
| 485 | free(llp); |
| 486 | } |
| 487 | |
| 488 | #ifdef HAVE_SPLICE |
| 489 | static struct fuse_ll_pipe *fuse_ll_get_pipe(struct fuse_ll *f) |
| 490 | { |
| 491 | struct fuse_ll_pipe *llp = pthread_getspecific(f->pipe_key); |
| 492 | if (llp == NULL) { |
| 493 | int res; |
| 494 | |
| 495 | llp = malloc(sizeof(struct fuse_ll_pipe)); |
| 496 | if (llp == NULL) |
| 497 | return NULL; |
| 498 | |
| 499 | res = pipe(llp->pipe); |
| 500 | if (res == -1) { |
| 501 | free(llp); |
| 502 | return NULL; |
| 503 | } |
| 504 | |
| 505 | if (fcntl(llp->pipe[0], F_SETFL, O_NONBLOCK) == -1 || |
| 506 | fcntl(llp->pipe[1], F_SETFL, O_NONBLOCK) == -1) { |
| 507 | close(llp->pipe[0]); |
| 508 | close(llp->pipe[1]); |
| 509 | free(llp); |
| 510 | return NULL; |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | *the default size is 16 pages on linux |
| 515 | */ |
| 516 | llp->size = pagesize * 16; |
| 517 | llp->can_grow = 1; |
| 518 | |
| 519 | pthread_setspecific(f->pipe_key, llp); |
| 520 | } |
| 521 | |
| 522 | return llp; |
| 523 | } |
| 524 | #endif |
| 525 | |
| 526 | static void fuse_ll_clear_pipe(struct fuse_ll *f) |
| 527 | { |
| 528 | struct fuse_ll_pipe *llp = pthread_getspecific(f->pipe_key); |
| 529 | if (llp) { |
| 530 | pthread_setspecific(f->pipe_key, NULL); |
| 531 | fuse_ll_pipe_free(llp); |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | #if defined(HAVE_SPLICE) && defined(HAVE_VMSPLICE) |
| 536 | static int read_back(int fd, char *buf, size_t len) |
| 537 | { |
| 538 | int res; |
| 539 | |
| 540 | res = read(fd, buf, len); |
| 541 | if (res == -1) { |
| 542 | fprintf(stderr, "fuse: internal error: failed to read back from pipe: %s\n", strerror(errno)); |
| 543 | return -EIO; |
| 544 | } |
| 545 | if (res != len) { |
| 546 | fprintf(stderr, "fuse: internal error: short read back from pipe: %i from %zi\n", res, len); |
| 547 | return -EIO; |
| 548 | } |
| 549 | return 0; |
| 550 | } |
| 551 | |
| 552 | static int fuse_send_data_iov(struct fuse_ll *f, struct fuse_chan *ch, |
| 553 | struct iovec *iov, int iov_count, |
| 554 | struct fuse_bufvec *buf, unsigned int flags) |
| 555 | { |
| 556 | int res; |
| 557 | size_t len = fuse_buf_size(buf); |
| 558 | struct fuse_out_header *out = iov[0].iov_base; |
| 559 | struct fuse_ll_pipe *llp; |
| 560 | int splice_flags; |
| 561 | size_t pipesize; |
| 562 | size_t total_fd_size; |
| 563 | size_t idx; |
| 564 | size_t headerlen; |
| 565 | struct fuse_bufvec pipe_buf = FUSE_BUFVEC_INIT(len); |
| 566 | |
| 567 | if (f->broken_splice_nonblock) |
| 568 | goto fallback; |
| 569 | |
| 570 | if (flags & FUSE_BUF_NO_SPLICE) |
| 571 | goto fallback; |
| 572 | |
| 573 | total_fd_size = 0; |
| 574 | for (idx = buf->idx; idx < buf->count; idx++) { |
| 575 | if (buf->buf[idx].flags & FUSE_BUF_IS_FD) { |
| 576 | total_fd_size = buf->buf[idx].size; |
| 577 | if (idx == buf->idx) |
| 578 | total_fd_size -= buf->off; |
| 579 | } |
| 580 | } |
| 581 | if (total_fd_size < 2 * pagesize) |
| 582 | goto fallback; |
| 583 | |
| 584 | if (f->conn.proto_minor < 14 || |
| 585 | !(f->conn.want & FUSE_CAP_SPLICE_WRITE)) |
| 586 | goto fallback; |
| 587 | |
| 588 | llp = fuse_ll_get_pipe(f); |
| 589 | if (llp == NULL) |
| 590 | goto fallback; |
| 591 | |
| 592 | |
| 593 | headerlen = iov_length(iov, iov_count); |
| 594 | |
| 595 | out->len = headerlen + len; |
| 596 | |
| 597 | /* |
| 598 | * Heuristic for the required pipe size, does not work if the |
| 599 | * source contains less than page size fragments |
| 600 | */ |
| 601 | pipesize = pagesize * (iov_count + buf->count + 1) + out->len; |
| 602 | |
| 603 | if (llp->size < pipesize) { |
| 604 | if (llp->can_grow) { |
| 605 | res = fcntl(llp->pipe[0], F_SETPIPE_SZ, pipesize); |
| 606 | if (res == -1) { |
| 607 | llp->can_grow = 0; |
| 608 | goto fallback; |
| 609 | } |
| 610 | llp->size = res; |
| 611 | } |
| 612 | if (llp->size < pipesize) |
| 613 | goto fallback; |
| 614 | } |
| 615 | |
| 616 | |
| 617 | res = vmsplice(llp->pipe[1], iov, iov_count, SPLICE_F_NONBLOCK); |
| 618 | if (res == -1) |
| 619 | goto fallback; |
| 620 | |
| 621 | if (res != headerlen) { |
| 622 | res = -EIO; |
| 623 | fprintf(stderr, "fuse: short vmsplice to pipe: %u/%zu\n", res, |
| 624 | headerlen); |
| 625 | goto clear_pipe; |
| 626 | } |
| 627 | |
| 628 | pipe_buf.buf[0].flags = FUSE_BUF_IS_FD; |
| 629 | pipe_buf.buf[0].fd = llp->pipe[1]; |
| 630 | |
| 631 | res = fuse_buf_copy(&pipe_buf, buf, |
| 632 | FUSE_BUF_FORCE_SPLICE | FUSE_BUF_SPLICE_NONBLOCK); |
| 633 | if (res < 0) { |
| 634 | if (res == -EAGAIN || res == -EINVAL) { |
| 635 | /* |
| 636 | * Should only get EAGAIN on kernels with |
| 637 | * broken SPLICE_F_NONBLOCK support (<= |
| 638 | * 2.6.35) where this error or a short read is |
| 639 | * returned even if the pipe itself is not |
| 640 | * full |
| 641 | * |
| 642 | * EINVAL might mean that splice can't handle |
| 643 | * this combination of input and output. |
| 644 | */ |
| 645 | if (res == -EAGAIN) |
| 646 | f->broken_splice_nonblock = 1; |
| 647 | |
| 648 | pthread_setspecific(f->pipe_key, NULL); |
| 649 | fuse_ll_pipe_free(llp); |
| 650 | goto fallback; |
| 651 | } |
| 652 | res = -res; |
| 653 | goto clear_pipe; |
| 654 | } |
| 655 | |
| 656 | if (res != 0 && res < len) { |
| 657 | struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len); |
| 658 | void *mbuf; |
| 659 | size_t now_len = res; |
| 660 | /* |
| 661 | * For regular files a short count is either |
| 662 | * 1) due to EOF, or |
| 663 | * 2) because of broken SPLICE_F_NONBLOCK (see above) |
| 664 | * |
| 665 | * For other inputs it's possible that we overflowed |
| 666 | * the pipe because of small buffer fragments. |
| 667 | */ |
| 668 | |
| 669 | res = posix_memalign(&mbuf, pagesize, len); |
| 670 | if (res != 0) |
| 671 | goto clear_pipe; |
| 672 | |
| 673 | mem_buf.buf[0].mem = mbuf; |
| 674 | mem_buf.off = now_len; |
| 675 | res = fuse_buf_copy(&mem_buf, buf, 0); |
| 676 | if (res > 0) { |
| 677 | char *tmpbuf; |
| 678 | size_t extra_len = res; |
| 679 | /* |
| 680 | * Trickiest case: got more data. Need to get |
| 681 | * back the data from the pipe and then fall |
| 682 | * back to regular write. |
| 683 | */ |
| 684 | tmpbuf = malloc(headerlen); |
| 685 | if (tmpbuf == NULL) { |
| 686 | free(mbuf); |
| 687 | res = ENOMEM; |
| 688 | goto clear_pipe; |
| 689 | } |
| 690 | res = read_back(llp->pipe[0], tmpbuf, headerlen); |
| 691 | if (res != 0) { |
| 692 | free(mbuf); |
| 693 | goto clear_pipe; |
| 694 | } |
| 695 | free(tmpbuf); |
| 696 | res = read_back(llp->pipe[0], mbuf, now_len); |
| 697 | if (res != 0) { |
| 698 | free(mbuf); |
| 699 | goto clear_pipe; |
| 700 | } |
| 701 | len = now_len + extra_len; |
| 702 | iov[iov_count].iov_base = mbuf; |
| 703 | iov[iov_count].iov_len = len; |
| 704 | iov_count++; |
| 705 | res = fuse_send_msg(f, ch, iov, iov_count); |
| 706 | free(mbuf); |
| 707 | return res; |
| 708 | } |
| 709 | free(mbuf); |
| 710 | res = now_len; |
| 711 | } |
| 712 | len = res; |
| 713 | out->len = headerlen + len; |
| 714 | |
| 715 | if (f->debug) { |
| 716 | fprintf(stderr, |
| 717 | " unique: %llu, success, outsize: %i (splice)\n", |
| 718 | (unsigned long long) out->unique, out->len); |
| 719 | } |
| 720 | |
| 721 | splice_flags = 0; |
| 722 | if ((flags & FUSE_BUF_SPLICE_MOVE) && |
| 723 | (f->conn.want & FUSE_CAP_SPLICE_MOVE)) |
| 724 | splice_flags |= SPLICE_F_MOVE; |
| 725 | |
| 726 | res = splice(llp->pipe[0], NULL, |
| 727 | fuse_chan_fd(ch), NULL, out->len, splice_flags); |
| 728 | if (res == -1) { |
| 729 | res = -errno; |
| 730 | perror("fuse: splice from pipe"); |
| 731 | goto clear_pipe; |
| 732 | } |
| 733 | if (res != out->len) { |
| 734 | res = -EIO; |
| 735 | fprintf(stderr, "fuse: short splice from pipe: %u/%u\n", |
| 736 | res, out->len); |
| 737 | goto clear_pipe; |
| 738 | } |
| 739 | return 0; |
| 740 | |
| 741 | clear_pipe: |
| 742 | fuse_ll_clear_pipe(f); |
| 743 | return res; |
| 744 | |
| 745 | fallback: |
| 746 | return fuse_send_data_iov_fallback(f, ch, iov, iov_count, buf, len); |
| 747 | } |
| 748 | #else |
| 749 | static int fuse_send_data_iov(struct fuse_ll *f, struct fuse_chan *ch, |
| 750 | struct iovec *iov, int iov_count, |
| 751 | struct fuse_bufvec *buf, unsigned int flags) |
| 752 | { |
| 753 | size_t len = fuse_buf_size(buf); |
| 754 | (void) flags; |
| 755 | |
| 756 | return fuse_send_data_iov_fallback(f, ch, iov, iov_count, buf, len); |
| 757 | } |
| 758 | #endif |
| 759 | |
| 760 | int fuse_reply_data(fuse_req_t req, struct fuse_bufvec *bufv, |
| 761 | enum fuse_buf_copy_flags flags) |
| 762 | { |
| 763 | struct iovec iov[2]; |
| 764 | struct fuse_out_header out; |
| 765 | int res; |
| 766 | |
| 767 | iov[0].iov_base = &out; |
| 768 | iov[0].iov_len = sizeof(struct fuse_out_header); |
| 769 | |
| 770 | out.unique = req->unique; |
| 771 | out.error = 0; |
| 772 | |
| 773 | res = fuse_send_data_iov(req->f, req->ch, iov, 1, bufv, flags); |
| 774 | if (res <= 0) { |
| 775 | fuse_free_req(req); |
| 776 | return res; |
| 777 | } else { |
| 778 | return fuse_reply_err(req, res); |
| 779 | } |
| 780 | } |
| 781 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 782 | int fuse_reply_statfs(fuse_req_t req, const struct statvfs *stbuf) |
| 783 | { |
| 784 | struct fuse_statfs_out arg; |
| 785 | size_t size = req->f->conn.proto_minor < 4 ? |
| 786 | FUSE_COMPAT_STATFS_SIZE : sizeof(arg); |
| 787 | |
| 788 | memset(&arg, 0, sizeof(arg)); |
| 789 | convert_statfs(stbuf, &arg.st); |
| 790 | |
| 791 | return send_reply_ok(req, &arg, size); |
| 792 | } |
| 793 | |
| 794 | int fuse_reply_xattr(fuse_req_t req, size_t count) |
| 795 | { |
| 796 | struct fuse_getxattr_out arg; |
| 797 | |
| 798 | memset(&arg, 0, sizeof(arg)); |
| 799 | arg.size = count; |
| 800 | |
| 801 | return send_reply_ok(req, &arg, sizeof(arg)); |
| 802 | } |
| 803 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 804 | int fuse_reply_lock(fuse_req_t req, const struct flock *lock) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 805 | { |
| 806 | struct fuse_lk_out arg; |
| 807 | |
| 808 | memset(&arg, 0, sizeof(arg)); |
| 809 | arg.lk.type = lock->l_type; |
| 810 | if (lock->l_type != F_UNLCK) { |
| 811 | arg.lk.start = lock->l_start; |
| 812 | if (lock->l_len == 0) |
| 813 | arg.lk.end = OFFSET_MAX; |
| 814 | else |
| 815 | arg.lk.end = lock->l_start + lock->l_len - 1; |
| 816 | } |
| 817 | arg.lk.pid = lock->l_pid; |
| 818 | return send_reply_ok(req, &arg, sizeof(arg)); |
| 819 | } |
| 820 | |
| 821 | int fuse_reply_bmap(fuse_req_t req, uint64_t idx) |
| 822 | { |
| 823 | struct fuse_bmap_out arg; |
| 824 | |
| 825 | memset(&arg, 0, sizeof(arg)); |
| 826 | arg.block = idx; |
| 827 | |
| 828 | return send_reply_ok(req, &arg, sizeof(arg)); |
| 829 | } |
| 830 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 831 | static struct fuse_ioctl_iovec *fuse_ioctl_iovec_copy(const struct iovec *iov, |
| 832 | size_t count) |
| 833 | { |
| 834 | struct fuse_ioctl_iovec *fiov; |
| 835 | size_t i; |
| 836 | |
| 837 | fiov = malloc(sizeof(fiov[0]) * count); |
| 838 | if (!fiov) |
| 839 | return NULL; |
| 840 | |
| 841 | for (i = 0; i < count; i++) { |
| 842 | fiov[i].base = (uintptr_t) iov[i].iov_base; |
| 843 | fiov[i].len = iov[i].iov_len; |
| 844 | } |
| 845 | |
| 846 | return fiov; |
| 847 | } |
| 848 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 849 | int fuse_reply_ioctl_retry(fuse_req_t req, |
| 850 | const struct iovec *in_iov, size_t in_count, |
| 851 | const struct iovec *out_iov, size_t out_count) |
| 852 | { |
| 853 | struct fuse_ioctl_out arg; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 854 | struct fuse_ioctl_iovec *in_fiov = NULL; |
| 855 | struct fuse_ioctl_iovec *out_fiov = NULL; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 856 | struct iovec iov[4]; |
| 857 | size_t count = 1; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 858 | int res; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 859 | |
| 860 | memset(&arg, 0, sizeof(arg)); |
| 861 | arg.flags |= FUSE_IOCTL_RETRY; |
| 862 | arg.in_iovs = in_count; |
| 863 | arg.out_iovs = out_count; |
| 864 | iov[count].iov_base = &arg; |
| 865 | iov[count].iov_len = sizeof(arg); |
| 866 | count++; |
| 867 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 868 | if (req->f->conn.proto_minor < 16) { |
| 869 | if (in_count) { |
| 870 | iov[count].iov_base = (void *)in_iov; |
| 871 | iov[count].iov_len = sizeof(in_iov[0]) * in_count; |
| 872 | count++; |
| 873 | } |
| 874 | |
| 875 | if (out_count) { |
| 876 | iov[count].iov_base = (void *)out_iov; |
| 877 | iov[count].iov_len = sizeof(out_iov[0]) * out_count; |
| 878 | count++; |
| 879 | } |
| 880 | } else { |
| 881 | /* Can't handle non-compat 64bit ioctls on 32bit */ |
| 882 | if (sizeof(void *) == 4 && req->ioctl_64bit) { |
| 883 | res = fuse_reply_err(req, EINVAL); |
| 884 | goto out; |
| 885 | } |
| 886 | |
| 887 | if (in_count) { |
| 888 | in_fiov = fuse_ioctl_iovec_copy(in_iov, in_count); |
| 889 | if (!in_fiov) |
| 890 | goto enomem; |
| 891 | |
| 892 | iov[count].iov_base = (void *)in_fiov; |
| 893 | iov[count].iov_len = sizeof(in_fiov[0]) * in_count; |
| 894 | count++; |
| 895 | } |
| 896 | if (out_count) { |
| 897 | out_fiov = fuse_ioctl_iovec_copy(out_iov, out_count); |
| 898 | if (!out_fiov) |
| 899 | goto enomem; |
| 900 | |
| 901 | iov[count].iov_base = (void *)out_fiov; |
| 902 | iov[count].iov_len = sizeof(out_fiov[0]) * out_count; |
| 903 | count++; |
| 904 | } |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 905 | } |
| 906 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 907 | res = send_reply_iov(req, 0, iov, count); |
| 908 | out: |
| 909 | free(in_fiov); |
| 910 | free(out_fiov); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 911 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 912 | return res; |
| 913 | |
| 914 | enomem: |
| 915 | res = fuse_reply_err(req, ENOMEM); |
| 916 | goto out; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | int fuse_reply_ioctl(fuse_req_t req, int result, const void *buf, size_t size) |
| 920 | { |
| 921 | struct fuse_ioctl_out arg; |
| 922 | struct iovec iov[3]; |
| 923 | size_t count = 1; |
| 924 | |
| 925 | memset(&arg, 0, sizeof(arg)); |
| 926 | arg.result = result; |
| 927 | iov[count].iov_base = &arg; |
| 928 | iov[count].iov_len = sizeof(arg); |
| 929 | count++; |
| 930 | |
| 931 | if (size) { |
| 932 | iov[count].iov_base = (char *) buf; |
| 933 | iov[count].iov_len = size; |
| 934 | count++; |
| 935 | } |
| 936 | |
| 937 | return send_reply_iov(req, 0, iov, count); |
| 938 | } |
| 939 | |
| 940 | int fuse_reply_ioctl_iov(fuse_req_t req, int result, const struct iovec *iov, |
| 941 | int count) |
| 942 | { |
| 943 | struct iovec *padded_iov; |
| 944 | struct fuse_ioctl_out arg; |
| 945 | int res; |
| 946 | |
| 947 | padded_iov = malloc((count + 2) * sizeof(struct iovec)); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 948 | if (padded_iov == NULL) |
| 949 | return fuse_reply_err(req, ENOMEM); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 950 | |
| 951 | memset(&arg, 0, sizeof(arg)); |
| 952 | arg.result = result; |
| 953 | padded_iov[1].iov_base = &arg; |
| 954 | padded_iov[1].iov_len = sizeof(arg); |
| 955 | |
| 956 | memcpy(&padded_iov[2], iov, count * sizeof(struct iovec)); |
| 957 | |
| 958 | res = send_reply_iov(req, 0, padded_iov, count + 2); |
| 959 | free(padded_iov); |
| 960 | |
| 961 | return res; |
| 962 | } |
| 963 | |
| 964 | int fuse_reply_poll(fuse_req_t req, unsigned revents) |
| 965 | { |
| 966 | struct fuse_poll_out arg; |
| 967 | |
| 968 | memset(&arg, 0, sizeof(arg)); |
| 969 | arg.revents = revents; |
| 970 | |
| 971 | return send_reply_ok(req, &arg, sizeof(arg)); |
| 972 | } |
| 973 | |
| 974 | static void do_lookup(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 975 | { |
| 976 | char *name = (char *) inarg; |
| 977 | |
| 978 | if (req->f->op.lookup) |
| 979 | req->f->op.lookup(req, nodeid, name); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 980 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 981 | fuse_reply_err(req, ENOSYS); |
| 982 | } |
| 983 | |
| 984 | static void do_forget(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 985 | { |
| 986 | struct fuse_forget_in *arg = (struct fuse_forget_in *) inarg; |
| 987 | |
| 988 | if (req->f->op.forget) |
| 989 | req->f->op.forget(req, nodeid, arg->nlookup); |
| 990 | else |
| 991 | fuse_reply_none(req); |
| 992 | } |
| 993 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 994 | static void do_batch_forget(fuse_req_t req, fuse_ino_t nodeid, |
| 995 | const void *inarg) |
| 996 | { |
| 997 | struct fuse_batch_forget_in *arg = (void *) inarg; |
| 998 | struct fuse_forget_one *param = (void *) PARAM(arg); |
| 999 | unsigned int i; |
| 1000 | |
| 1001 | (void) nodeid; |
| 1002 | |
| 1003 | if (req->f->op.forget_multi) { |
| 1004 | req->f->op.forget_multi(req, arg->count, |
| 1005 | (struct fuse_forget_data *) param); |
| 1006 | } else if (req->f->op.forget) { |
| 1007 | for (i = 0; i < arg->count; i++) { |
| 1008 | struct fuse_forget_one *forget = ¶m[i]; |
| 1009 | struct fuse_req *dummy_req; |
| 1010 | |
| 1011 | dummy_req = fuse_ll_alloc_req(req->f); |
| 1012 | if (dummy_req == NULL) |
| 1013 | break; |
| 1014 | |
| 1015 | dummy_req->unique = req->unique; |
| 1016 | dummy_req->ctx = req->ctx; |
| 1017 | dummy_req->ch = NULL; |
| 1018 | |
| 1019 | req->f->op.forget(dummy_req, forget->nodeid, |
| 1020 | forget->nlookup); |
| 1021 | } |
| 1022 | fuse_reply_none(req); |
| 1023 | } else { |
| 1024 | fuse_reply_none(req); |
| 1025 | } |
| 1026 | } |
| 1027 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1028 | static void do_getattr(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1029 | { |
| 1030 | struct fuse_file_info *fip = NULL; |
| 1031 | struct fuse_file_info fi; |
| 1032 | |
| 1033 | if (req->f->conn.proto_minor >= 9) { |
| 1034 | struct fuse_getattr_in *arg = (struct fuse_getattr_in *) inarg; |
| 1035 | |
| 1036 | if (arg->getattr_flags & FUSE_GETATTR_FH) { |
| 1037 | memset(&fi, 0, sizeof(fi)); |
| 1038 | fi.fh = arg->fh; |
| 1039 | fi.fh_old = fi.fh; |
| 1040 | fip = &fi; |
| 1041 | } |
| 1042 | } |
| 1043 | |
| 1044 | if (req->f->op.getattr) |
| 1045 | req->f->op.getattr(req, nodeid, fip); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1046 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1047 | fuse_reply_err(req, ENOSYS); |
| 1048 | } |
| 1049 | |
| 1050 | static void do_setattr(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1051 | { |
| 1052 | struct fuse_setattr_in *arg = (struct fuse_setattr_in *) inarg; |
| 1053 | |
| 1054 | if (req->f->op.setattr) { |
| 1055 | struct fuse_file_info *fi = NULL; |
| 1056 | struct fuse_file_info fi_store; |
| 1057 | struct stat stbuf; |
| 1058 | memset(&stbuf, 0, sizeof(stbuf)); |
| 1059 | convert_attr(arg, &stbuf); |
| 1060 | if (arg->valid & FATTR_FH) { |
| 1061 | arg->valid &= ~FATTR_FH; |
| 1062 | memset(&fi_store, 0, sizeof(fi_store)); |
| 1063 | fi = &fi_store; |
| 1064 | fi->fh = arg->fh; |
| 1065 | fi->fh_old = fi->fh; |
| 1066 | } |
| 1067 | arg->valid &= |
| 1068 | FUSE_SET_ATTR_MODE | |
| 1069 | FUSE_SET_ATTR_UID | |
| 1070 | FUSE_SET_ATTR_GID | |
| 1071 | FUSE_SET_ATTR_SIZE | |
| 1072 | FUSE_SET_ATTR_ATIME | |
| 1073 | FUSE_SET_ATTR_MTIME | |
| 1074 | FUSE_SET_ATTR_ATIME_NOW | |
| 1075 | FUSE_SET_ATTR_MTIME_NOW; |
| 1076 | |
| 1077 | req->f->op.setattr(req, nodeid, &stbuf, arg->valid, fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1078 | } else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1079 | fuse_reply_err(req, ENOSYS); |
| 1080 | } |
| 1081 | |
| 1082 | static void do_access(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1083 | { |
| 1084 | struct fuse_access_in *arg = (struct fuse_access_in *) inarg; |
| 1085 | |
| 1086 | if (req->f->op.access) |
| 1087 | req->f->op.access(req, nodeid, arg->mask); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1088 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1089 | fuse_reply_err(req, ENOSYS); |
| 1090 | } |
| 1091 | |
| 1092 | static void do_readlink(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1093 | { |
| 1094 | (void) inarg; |
| 1095 | |
| 1096 | if (req->f->op.readlink) |
| 1097 | req->f->op.readlink(req, nodeid); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1098 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1099 | fuse_reply_err(req, ENOSYS); |
| 1100 | } |
| 1101 | |
| 1102 | static void do_mknod(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1103 | { |
| 1104 | struct fuse_mknod_in *arg = (struct fuse_mknod_in *) inarg; |
| 1105 | char *name = PARAM(arg); |
| 1106 | |
| 1107 | if (req->f->conn.proto_minor >= 12) |
| 1108 | req->ctx.umask = arg->umask; |
| 1109 | else |
| 1110 | name = (char *) inarg + FUSE_COMPAT_MKNOD_IN_SIZE; |
| 1111 | |
| 1112 | if (req->f->op.mknod) |
| 1113 | req->f->op.mknod(req, nodeid, name, arg->mode, arg->rdev); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1114 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1115 | fuse_reply_err(req, ENOSYS); |
| 1116 | } |
| 1117 | |
| 1118 | static void do_mkdir(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1119 | { |
| 1120 | struct fuse_mkdir_in *arg = (struct fuse_mkdir_in *) inarg; |
| 1121 | |
| 1122 | if (req->f->conn.proto_minor >= 12) |
| 1123 | req->ctx.umask = arg->umask; |
| 1124 | |
| 1125 | if (req->f->op.mkdir) |
| 1126 | req->f->op.mkdir(req, nodeid, PARAM(arg), arg->mode); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1127 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1128 | fuse_reply_err(req, ENOSYS); |
| 1129 | } |
| 1130 | |
| 1131 | static void do_unlink(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1132 | { |
| 1133 | char *name = (char *) inarg; |
| 1134 | |
| 1135 | if (req->f->op.unlink) |
| 1136 | req->f->op.unlink(req, nodeid, name); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1137 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1138 | fuse_reply_err(req, ENOSYS); |
| 1139 | } |
| 1140 | |
| 1141 | static void do_rmdir(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1142 | { |
| 1143 | char *name = (char *) inarg; |
| 1144 | |
| 1145 | if (req->f->op.rmdir) |
| 1146 | req->f->op.rmdir(req, nodeid, name); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1147 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1148 | fuse_reply_err(req, ENOSYS); |
| 1149 | } |
| 1150 | |
| 1151 | static void do_symlink(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1152 | { |
| 1153 | char *name = (char *) inarg; |
| 1154 | char *linkname = ((char *) inarg) + strlen((char *) inarg) + 1; |
| 1155 | |
| 1156 | if (req->f->op.symlink) |
| 1157 | req->f->op.symlink(req, linkname, nodeid, name); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1158 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1159 | fuse_reply_err(req, ENOSYS); |
| 1160 | } |
| 1161 | |
| 1162 | static void do_rename(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1163 | { |
| 1164 | struct fuse_rename_in *arg = (struct fuse_rename_in *) inarg; |
| 1165 | char *oldname = PARAM(arg); |
| 1166 | char *newname = oldname + strlen(oldname) + 1; |
| 1167 | |
| 1168 | if (req->f->op.rename) |
| 1169 | req->f->op.rename(req, nodeid, oldname, arg->newdir, newname); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1170 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1171 | fuse_reply_err(req, ENOSYS); |
| 1172 | } |
| 1173 | |
| 1174 | static void do_link(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1175 | { |
| 1176 | struct fuse_link_in *arg = (struct fuse_link_in *) inarg; |
| 1177 | |
| 1178 | if (req->f->op.link) |
| 1179 | req->f->op.link(req, arg->oldnodeid, nodeid, PARAM(arg)); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1180 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1181 | fuse_reply_err(req, ENOSYS); |
| 1182 | } |
| 1183 | |
| 1184 | static void do_create(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1185 | { |
| 1186 | struct fuse_create_in *arg = (struct fuse_create_in *) inarg; |
| 1187 | |
| 1188 | if (req->f->op.create) { |
| 1189 | struct fuse_file_info fi; |
| 1190 | char *name = PARAM(arg); |
| 1191 | |
| 1192 | memset(&fi, 0, sizeof(fi)); |
| 1193 | fi.flags = arg->flags; |
| 1194 | |
| 1195 | if (req->f->conn.proto_minor >= 12) |
| 1196 | req->ctx.umask = arg->umask; |
| 1197 | else |
| 1198 | name = (char *) inarg + sizeof(struct fuse_open_in); |
| 1199 | |
| 1200 | req->f->op.create(req, nodeid, name, arg->mode, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1201 | } else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1202 | fuse_reply_err(req, ENOSYS); |
| 1203 | } |
| 1204 | |
| 1205 | static void do_open(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1206 | { |
| 1207 | struct fuse_open_in *arg = (struct fuse_open_in *) inarg; |
| 1208 | struct fuse_file_info fi; |
| 1209 | |
| 1210 | memset(&fi, 0, sizeof(fi)); |
| 1211 | fi.flags = arg->flags; |
| 1212 | |
| 1213 | if (req->f->op.open) |
| 1214 | req->f->op.open(req, nodeid, &fi); |
| 1215 | else |
| 1216 | fuse_reply_open(req, &fi); |
| 1217 | } |
| 1218 | |
| 1219 | static void do_read(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1220 | { |
| 1221 | struct fuse_read_in *arg = (struct fuse_read_in *) inarg; |
| 1222 | |
| 1223 | if (req->f->op.read) { |
| 1224 | struct fuse_file_info fi; |
| 1225 | |
| 1226 | memset(&fi, 0, sizeof(fi)); |
| 1227 | fi.fh = arg->fh; |
| 1228 | fi.fh_old = fi.fh; |
| 1229 | if (req->f->conn.proto_minor >= 9) { |
| 1230 | fi.lock_owner = arg->lock_owner; |
| 1231 | fi.flags = arg->flags; |
| 1232 | } |
| 1233 | req->f->op.read(req, nodeid, arg->size, arg->offset, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1234 | } else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1235 | fuse_reply_err(req, ENOSYS); |
| 1236 | } |
| 1237 | |
| 1238 | static void do_write(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1239 | { |
| 1240 | struct fuse_write_in *arg = (struct fuse_write_in *) inarg; |
| 1241 | struct fuse_file_info fi; |
| 1242 | char *param; |
| 1243 | |
| 1244 | memset(&fi, 0, sizeof(fi)); |
| 1245 | fi.fh = arg->fh; |
| 1246 | fi.fh_old = fi.fh; |
| 1247 | fi.writepage = arg->write_flags & 1; |
| 1248 | |
| 1249 | if (req->f->conn.proto_minor < 9) { |
| 1250 | param = ((char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE; |
| 1251 | } else { |
| 1252 | fi.lock_owner = arg->lock_owner; |
| 1253 | fi.flags = arg->flags; |
| 1254 | param = PARAM(arg); |
| 1255 | } |
| 1256 | |
| 1257 | if (req->f->op.write) |
| 1258 | req->f->op.write(req, nodeid, param, arg->size, |
| 1259 | arg->offset, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1260 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1261 | fuse_reply_err(req, ENOSYS); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | static void do_write_buf(fuse_req_t req, fuse_ino_t nodeid, const void *inarg, |
| 1265 | const struct fuse_buf *ibuf) |
| 1266 | { |
| 1267 | struct fuse_ll *f = req->f; |
| 1268 | struct fuse_bufvec bufv = { |
| 1269 | .buf[0] = *ibuf, |
| 1270 | .count = 1, |
| 1271 | }; |
| 1272 | struct fuse_write_in *arg = (struct fuse_write_in *) inarg; |
| 1273 | struct fuse_file_info fi; |
| 1274 | |
| 1275 | memset(&fi, 0, sizeof(fi)); |
| 1276 | fi.fh = arg->fh; |
| 1277 | fi.fh_old = fi.fh; |
| 1278 | fi.writepage = arg->write_flags & 1; |
| 1279 | |
| 1280 | if (req->f->conn.proto_minor < 9) { |
| 1281 | bufv.buf[0].mem = ((char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE; |
| 1282 | bufv.buf[0].size -= sizeof(struct fuse_in_header) + |
| 1283 | FUSE_COMPAT_WRITE_IN_SIZE; |
| 1284 | assert(!(bufv.buf[0].flags & FUSE_BUF_IS_FD)); |
| 1285 | } else { |
| 1286 | fi.lock_owner = arg->lock_owner; |
| 1287 | fi.flags = arg->flags; |
| 1288 | if (!(bufv.buf[0].flags & FUSE_BUF_IS_FD)) |
| 1289 | bufv.buf[0].mem = PARAM(arg); |
| 1290 | |
| 1291 | bufv.buf[0].size -= sizeof(struct fuse_in_header) + |
| 1292 | sizeof(struct fuse_write_in); |
bigbiff bigbiff | 31f0e5f | 2013-01-19 10:23:42 -0500 | [diff] [blame] | 1293 | } |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1294 | if (bufv.buf[0].size < arg->size) { |
| 1295 | fprintf(stderr, "fuse: do_write_buf: buffer size too small\n"); |
| 1296 | fuse_reply_err(req, EIO); |
| 1297 | goto out; |
| 1298 | } |
| 1299 | bufv.buf[0].size = arg->size; |
| 1300 | |
| 1301 | req->f->op.write_buf(req, nodeid, &bufv, arg->offset, &fi); |
| 1302 | |
| 1303 | out: |
| 1304 | /* Need to reset the pipe if ->write_buf() didn't consume all data */ |
| 1305 | if ((ibuf->flags & FUSE_BUF_IS_FD) && bufv.idx < bufv.count) |
| 1306 | fuse_ll_clear_pipe(f); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1307 | } |
| 1308 | |
| 1309 | static void do_flush(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1310 | { |
| 1311 | struct fuse_flush_in *arg = (struct fuse_flush_in *) inarg; |
| 1312 | struct fuse_file_info fi; |
| 1313 | |
| 1314 | memset(&fi, 0, sizeof(fi)); |
| 1315 | fi.fh = arg->fh; |
| 1316 | fi.fh_old = fi.fh; |
| 1317 | fi.flush = 1; |
| 1318 | if (req->f->conn.proto_minor >= 7) |
| 1319 | fi.lock_owner = arg->lock_owner; |
| 1320 | |
| 1321 | if (req->f->op.flush) |
| 1322 | req->f->op.flush(req, nodeid, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1323 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1324 | fuse_reply_err(req, ENOSYS); |
| 1325 | } |
| 1326 | |
| 1327 | static void do_release(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1328 | { |
| 1329 | struct fuse_release_in *arg = (struct fuse_release_in *) inarg; |
| 1330 | struct fuse_file_info fi; |
| 1331 | |
| 1332 | memset(&fi, 0, sizeof(fi)); |
| 1333 | fi.flags = arg->flags; |
| 1334 | fi.fh = arg->fh; |
| 1335 | fi.fh_old = fi.fh; |
| 1336 | if (req->f->conn.proto_minor >= 8) { |
| 1337 | fi.flush = (arg->release_flags & FUSE_RELEASE_FLUSH) ? 1 : 0; |
| 1338 | fi.lock_owner = arg->lock_owner; |
| 1339 | } |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1340 | if (arg->release_flags & FUSE_RELEASE_FLOCK_UNLOCK) { |
| 1341 | fi.flock_release = 1; |
| 1342 | fi.lock_owner = arg->lock_owner; |
| 1343 | } |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1344 | |
| 1345 | if (req->f->op.release) |
| 1346 | req->f->op.release(req, nodeid, &fi); |
| 1347 | else |
| 1348 | fuse_reply_err(req, 0); |
| 1349 | } |
| 1350 | |
| 1351 | static void do_fsync(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1352 | { |
| 1353 | struct fuse_fsync_in *arg = (struct fuse_fsync_in *) inarg; |
| 1354 | struct fuse_file_info fi; |
| 1355 | |
| 1356 | memset(&fi, 0, sizeof(fi)); |
| 1357 | fi.fh = arg->fh; |
| 1358 | fi.fh_old = fi.fh; |
| 1359 | |
| 1360 | if (req->f->op.fsync) |
| 1361 | req->f->op.fsync(req, nodeid, arg->fsync_flags & 1, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1362 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1363 | fuse_reply_err(req, ENOSYS); |
| 1364 | } |
| 1365 | |
| 1366 | static void do_opendir(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1367 | { |
| 1368 | struct fuse_open_in *arg = (struct fuse_open_in *) inarg; |
| 1369 | struct fuse_file_info fi; |
| 1370 | |
| 1371 | memset(&fi, 0, sizeof(fi)); |
| 1372 | fi.flags = arg->flags; |
| 1373 | |
| 1374 | if (req->f->op.opendir) |
| 1375 | req->f->op.opendir(req, nodeid, &fi); |
| 1376 | else |
| 1377 | fuse_reply_open(req, &fi); |
| 1378 | } |
| 1379 | |
| 1380 | static void do_readdir(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1381 | { |
| 1382 | struct fuse_read_in *arg = (struct fuse_read_in *) inarg; |
| 1383 | struct fuse_file_info fi; |
| 1384 | |
| 1385 | memset(&fi, 0, sizeof(fi)); |
| 1386 | fi.fh = arg->fh; |
| 1387 | fi.fh_old = fi.fh; |
| 1388 | |
| 1389 | if (req->f->op.readdir) |
| 1390 | req->f->op.readdir(req, nodeid, arg->size, arg->offset, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1391 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1392 | fuse_reply_err(req, ENOSYS); |
| 1393 | } |
| 1394 | |
| 1395 | static void do_releasedir(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1396 | { |
| 1397 | struct fuse_release_in *arg = (struct fuse_release_in *) inarg; |
| 1398 | struct fuse_file_info fi; |
| 1399 | |
| 1400 | memset(&fi, 0, sizeof(fi)); |
| 1401 | fi.flags = arg->flags; |
| 1402 | fi.fh = arg->fh; |
| 1403 | fi.fh_old = fi.fh; |
| 1404 | |
| 1405 | if (req->f->op.releasedir) |
| 1406 | req->f->op.releasedir(req, nodeid, &fi); |
| 1407 | else |
| 1408 | fuse_reply_err(req, 0); |
| 1409 | } |
| 1410 | |
| 1411 | static void do_fsyncdir(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1412 | { |
| 1413 | struct fuse_fsync_in *arg = (struct fuse_fsync_in *) inarg; |
| 1414 | struct fuse_file_info fi; |
| 1415 | |
| 1416 | memset(&fi, 0, sizeof(fi)); |
| 1417 | fi.fh = arg->fh; |
| 1418 | fi.fh_old = fi.fh; |
| 1419 | |
| 1420 | if (req->f->op.fsyncdir) |
| 1421 | req->f->op.fsyncdir(req, nodeid, arg->fsync_flags & 1, &fi); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1422 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1423 | fuse_reply_err(req, ENOSYS); |
| 1424 | } |
| 1425 | |
| 1426 | static void do_statfs(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1427 | { |
| 1428 | (void) nodeid; |
| 1429 | (void) inarg; |
| 1430 | |
| 1431 | if (req->f->op.statfs) |
| 1432 | req->f->op.statfs(req, nodeid); |
| 1433 | else { |
| 1434 | struct statvfs buf = { |
| 1435 | .f_namemax = 255, |
| 1436 | .f_bsize = 512, |
| 1437 | }; |
| 1438 | fuse_reply_statfs(req, &buf); |
| 1439 | } |
| 1440 | } |
| 1441 | |
| 1442 | static void do_setxattr(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1443 | { |
| 1444 | struct fuse_setxattr_in *arg = (struct fuse_setxattr_in *) inarg; |
| 1445 | char *name = PARAM(arg); |
| 1446 | char *value = name + strlen(name) + 1; |
| 1447 | |
| 1448 | if (req->f->op.setxattr) |
| 1449 | req->f->op.setxattr(req, nodeid, name, value, arg->size, |
| 1450 | arg->flags); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1451 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1452 | fuse_reply_err(req, ENOSYS); |
| 1453 | } |
| 1454 | |
| 1455 | static void do_getxattr(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1456 | { |
| 1457 | struct fuse_getxattr_in *arg = (struct fuse_getxattr_in *) inarg; |
| 1458 | |
| 1459 | if (req->f->op.getxattr) |
| 1460 | req->f->op.getxattr(req, nodeid, PARAM(arg), arg->size); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1461 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1462 | fuse_reply_err(req, ENOSYS); |
| 1463 | } |
| 1464 | |
| 1465 | static void do_listxattr(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1466 | { |
| 1467 | struct fuse_getxattr_in *arg = (struct fuse_getxattr_in *) inarg; |
| 1468 | |
| 1469 | if (req->f->op.listxattr) |
| 1470 | req->f->op.listxattr(req, nodeid, arg->size); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1471 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1472 | fuse_reply_err(req, ENOSYS); |
| 1473 | } |
| 1474 | |
| 1475 | static void do_removexattr(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1476 | { |
| 1477 | char *name = (char *) inarg; |
| 1478 | |
| 1479 | if (req->f->op.removexattr) |
| 1480 | req->f->op.removexattr(req, nodeid, name); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1481 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1482 | fuse_reply_err(req, ENOSYS); |
| 1483 | } |
| 1484 | |
| 1485 | static void convert_fuse_file_lock(struct fuse_file_lock *fl, |
| 1486 | struct flock *flock) |
| 1487 | { |
| 1488 | memset(flock, 0, sizeof(struct flock)); |
| 1489 | flock->l_type = fl->type; |
| 1490 | flock->l_whence = SEEK_SET; |
| 1491 | flock->l_start = fl->start; |
| 1492 | if (fl->end == OFFSET_MAX) |
| 1493 | flock->l_len = 0; |
| 1494 | else |
| 1495 | flock->l_len = fl->end - fl->start + 1; |
| 1496 | flock->l_pid = fl->pid; |
| 1497 | } |
| 1498 | |
| 1499 | static void do_getlk(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1500 | { |
| 1501 | struct fuse_lk_in *arg = (struct fuse_lk_in *) inarg; |
| 1502 | struct fuse_file_info fi; |
| 1503 | struct flock flock; |
| 1504 | |
| 1505 | memset(&fi, 0, sizeof(fi)); |
| 1506 | fi.fh = arg->fh; |
| 1507 | fi.lock_owner = arg->owner; |
| 1508 | |
| 1509 | convert_fuse_file_lock(&arg->lk, &flock); |
| 1510 | if (req->f->op.getlk) |
| 1511 | req->f->op.getlk(req, nodeid, &fi, &flock); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1512 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1513 | fuse_reply_err(req, ENOSYS); |
| 1514 | } |
| 1515 | |
| 1516 | static void do_setlk_common(fuse_req_t req, fuse_ino_t nodeid, |
| 1517 | const void *inarg, int sleep) |
| 1518 | { |
| 1519 | struct fuse_lk_in *arg = (struct fuse_lk_in *) inarg; |
| 1520 | struct fuse_file_info fi; |
| 1521 | struct flock flock; |
| 1522 | |
| 1523 | memset(&fi, 0, sizeof(fi)); |
| 1524 | fi.fh = arg->fh; |
| 1525 | fi.lock_owner = arg->owner; |
| 1526 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1527 | if (arg->lk_flags & FUSE_LK_FLOCK) { |
| 1528 | int op = 0; |
| 1529 | |
| 1530 | switch (arg->lk.type) { |
| 1531 | case F_RDLCK: |
| 1532 | op = LOCK_SH; |
| 1533 | break; |
| 1534 | case F_WRLCK: |
| 1535 | op = LOCK_EX; |
| 1536 | break; |
| 1537 | case F_UNLCK: |
| 1538 | op = LOCK_UN; |
| 1539 | break; |
| 1540 | } |
| 1541 | if (!sleep) |
| 1542 | op |= LOCK_NB; |
| 1543 | |
| 1544 | if (req->f->op.flock) |
| 1545 | req->f->op.flock(req, nodeid, &fi, op); |
| 1546 | else |
| 1547 | fuse_reply_err(req, ENOSYS); |
| 1548 | } else { |
| 1549 | convert_fuse_file_lock(&arg->lk, &flock); |
| 1550 | if (req->f->op.setlk) |
| 1551 | req->f->op.setlk(req, nodeid, &fi, &flock, sleep); |
| 1552 | else |
| 1553 | fuse_reply_err(req, ENOSYS); |
bigbiff bigbiff | 31f0e5f | 2013-01-19 10:23:42 -0500 | [diff] [blame] | 1554 | } |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | static void do_setlk(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1558 | { |
| 1559 | do_setlk_common(req, nodeid, inarg, 0); |
| 1560 | } |
| 1561 | |
| 1562 | static void do_setlkw(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1563 | { |
| 1564 | do_setlk_common(req, nodeid, inarg, 1); |
| 1565 | } |
| 1566 | |
| 1567 | static int find_interrupted(struct fuse_ll *f, struct fuse_req *req) |
| 1568 | { |
| 1569 | struct fuse_req *curr; |
| 1570 | |
| 1571 | for (curr = f->list.next; curr != &f->list; curr = curr->next) { |
| 1572 | if (curr->unique == req->u.i.unique) { |
| 1573 | fuse_interrupt_func_t func; |
| 1574 | void *data; |
| 1575 | |
| 1576 | curr->ctr++; |
| 1577 | pthread_mutex_unlock(&f->lock); |
| 1578 | |
| 1579 | /* Ugh, ugly locking */ |
| 1580 | pthread_mutex_lock(&curr->lock); |
| 1581 | pthread_mutex_lock(&f->lock); |
| 1582 | curr->interrupted = 1; |
| 1583 | func = curr->u.ni.func; |
| 1584 | data = curr->u.ni.data; |
| 1585 | pthread_mutex_unlock(&f->lock); |
| 1586 | if (func) |
| 1587 | func(curr, data); |
| 1588 | pthread_mutex_unlock(&curr->lock); |
| 1589 | |
| 1590 | pthread_mutex_lock(&f->lock); |
| 1591 | curr->ctr--; |
| 1592 | if (!curr->ctr) |
| 1593 | destroy_req(curr); |
| 1594 | |
| 1595 | return 1; |
| 1596 | } |
| 1597 | } |
| 1598 | for (curr = f->interrupts.next; curr != &f->interrupts; |
| 1599 | curr = curr->next) { |
| 1600 | if (curr->u.i.unique == req->u.i.unique) |
| 1601 | return 1; |
| 1602 | } |
| 1603 | return 0; |
| 1604 | } |
| 1605 | |
| 1606 | static void do_interrupt(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1607 | { |
| 1608 | struct fuse_interrupt_in *arg = (struct fuse_interrupt_in *) inarg; |
| 1609 | struct fuse_ll *f = req->f; |
| 1610 | |
| 1611 | (void) nodeid; |
| 1612 | if (f->debug) |
| 1613 | fprintf(stderr, "INTERRUPT: %llu\n", |
| 1614 | (unsigned long long) arg->unique); |
| 1615 | |
| 1616 | req->u.i.unique = arg->unique; |
| 1617 | |
| 1618 | pthread_mutex_lock(&f->lock); |
| 1619 | if (find_interrupted(f, req)) |
| 1620 | destroy_req(req); |
| 1621 | else |
| 1622 | list_add_req(req, &f->interrupts); |
| 1623 | pthread_mutex_unlock(&f->lock); |
| 1624 | } |
| 1625 | |
| 1626 | static struct fuse_req *check_interrupt(struct fuse_ll *f, struct fuse_req *req) |
| 1627 | { |
| 1628 | struct fuse_req *curr; |
| 1629 | |
| 1630 | for (curr = f->interrupts.next; curr != &f->interrupts; |
| 1631 | curr = curr->next) { |
| 1632 | if (curr->u.i.unique == req->unique) { |
| 1633 | req->interrupted = 1; |
| 1634 | list_del_req(curr); |
| 1635 | free(curr); |
| 1636 | return NULL; |
| 1637 | } |
| 1638 | } |
| 1639 | curr = f->interrupts.next; |
| 1640 | if (curr != &f->interrupts) { |
| 1641 | list_del_req(curr); |
| 1642 | list_init_req(curr); |
| 1643 | return curr; |
| 1644 | } else |
| 1645 | return NULL; |
| 1646 | } |
| 1647 | |
| 1648 | static void do_bmap(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1649 | { |
| 1650 | struct fuse_bmap_in *arg = (struct fuse_bmap_in *) inarg; |
| 1651 | |
| 1652 | if (req->f->op.bmap) |
| 1653 | req->f->op.bmap(req, nodeid, arg->blocksize, arg->block); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1654 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1655 | fuse_reply_err(req, ENOSYS); |
| 1656 | } |
| 1657 | |
| 1658 | static void do_ioctl(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1659 | { |
| 1660 | struct fuse_ioctl_in *arg = (struct fuse_ioctl_in *) inarg; |
| 1661 | unsigned int flags = arg->flags; |
| 1662 | void *in_buf = arg->in_size ? PARAM(arg) : NULL; |
| 1663 | struct fuse_file_info fi; |
| 1664 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1665 | if (flags & FUSE_IOCTL_DIR && |
| 1666 | !(req->f->conn.want & FUSE_CAP_IOCTL_DIR)) { |
| 1667 | fuse_reply_err(req, ENOTTY); |
| 1668 | return; |
| 1669 | } |
| 1670 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1671 | memset(&fi, 0, sizeof(fi)); |
| 1672 | fi.fh = arg->fh; |
| 1673 | fi.fh_old = fi.fh; |
| 1674 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1675 | if (sizeof(void *) == 4 && req->f->conn.proto_minor >= 16 && |
| 1676 | !(flags & FUSE_IOCTL_32BIT)) { |
| 1677 | req->ioctl_64bit = 1; |
| 1678 | } |
| 1679 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1680 | if (req->f->op.ioctl) |
| 1681 | req->f->op.ioctl(req, nodeid, arg->cmd, |
| 1682 | (void *)(uintptr_t)arg->arg, &fi, flags, |
| 1683 | in_buf, arg->in_size, arg->out_size); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1684 | else |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1685 | fuse_reply_err(req, ENOSYS); |
| 1686 | } |
| 1687 | |
| 1688 | void fuse_pollhandle_destroy(struct fuse_pollhandle *ph) |
| 1689 | { |
| 1690 | free(ph); |
| 1691 | } |
| 1692 | |
| 1693 | static void do_poll(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1694 | { |
| 1695 | struct fuse_poll_in *arg = (struct fuse_poll_in *) inarg; |
| 1696 | struct fuse_file_info fi; |
| 1697 | |
| 1698 | memset(&fi, 0, sizeof(fi)); |
| 1699 | fi.fh = arg->fh; |
| 1700 | fi.fh_old = fi.fh; |
| 1701 | |
| 1702 | if (req->f->op.poll) { |
| 1703 | struct fuse_pollhandle *ph = NULL; |
| 1704 | |
| 1705 | if (arg->flags & FUSE_POLL_SCHEDULE_NOTIFY) { |
| 1706 | ph = malloc(sizeof(struct fuse_pollhandle)); |
| 1707 | if (ph == NULL) { |
| 1708 | fuse_reply_err(req, ENOMEM); |
| 1709 | return; |
| 1710 | } |
| 1711 | ph->kh = arg->kh; |
| 1712 | ph->ch = req->ch; |
| 1713 | ph->f = req->f; |
| 1714 | } |
| 1715 | |
| 1716 | req->f->op.poll(req, nodeid, &fi, ph); |
| 1717 | } else { |
| 1718 | fuse_reply_err(req, ENOSYS); |
| 1719 | } |
| 1720 | } |
| 1721 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1722 | static void do_fallocate(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1723 | { |
| 1724 | struct fuse_fallocate_in *arg = (struct fuse_fallocate_in *) inarg; |
| 1725 | struct fuse_file_info fi; |
| 1726 | |
| 1727 | memset(&fi, 0, sizeof(fi)); |
| 1728 | fi.fh = arg->fh; |
| 1729 | |
| 1730 | if (req->f->op.fallocate) |
| 1731 | req->f->op.fallocate(req, nodeid, arg->mode, arg->offset, arg->length, &fi); |
| 1732 | else |
| 1733 | fuse_reply_err(req, ENOSYS); |
| 1734 | } |
| 1735 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1736 | static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1737 | { |
| 1738 | struct fuse_init_in *arg = (struct fuse_init_in *) inarg; |
| 1739 | struct fuse_init_out outarg; |
| 1740 | struct fuse_ll *f = req->f; |
| 1741 | size_t bufsize = fuse_chan_bufsize(req->ch); |
| 1742 | |
| 1743 | (void) nodeid; |
| 1744 | if (f->debug) { |
| 1745 | fprintf(stderr, "INIT: %u.%u\n", arg->major, arg->minor); |
| 1746 | if (arg->major == 7 && arg->minor >= 6) { |
| 1747 | fprintf(stderr, "flags=0x%08x\n", arg->flags); |
| 1748 | fprintf(stderr, "max_readahead=0x%08x\n", |
| 1749 | arg->max_readahead); |
| 1750 | } |
| 1751 | } |
| 1752 | f->conn.proto_major = arg->major; |
| 1753 | f->conn.proto_minor = arg->minor; |
| 1754 | f->conn.capable = 0; |
| 1755 | f->conn.want = 0; |
| 1756 | |
| 1757 | memset(&outarg, 0, sizeof(outarg)); |
| 1758 | outarg.major = FUSE_KERNEL_VERSION; |
| 1759 | outarg.minor = FUSE_KERNEL_MINOR_VERSION; |
| 1760 | |
| 1761 | if (arg->major < 7) { |
| 1762 | fprintf(stderr, "fuse: unsupported protocol version: %u.%u\n", |
| 1763 | arg->major, arg->minor); |
| 1764 | fuse_reply_err(req, EPROTO); |
| 1765 | return; |
| 1766 | } |
| 1767 | |
| 1768 | if (arg->major > 7) { |
| 1769 | /* Wait for a second INIT request with a 7.X version */ |
| 1770 | send_reply_ok(req, &outarg, sizeof(outarg)); |
| 1771 | return; |
| 1772 | } |
| 1773 | |
| 1774 | if (arg->minor >= 6) { |
| 1775 | if (f->conn.async_read) |
| 1776 | f->conn.async_read = arg->flags & FUSE_ASYNC_READ; |
| 1777 | if (arg->max_readahead < f->conn.max_readahead) |
| 1778 | f->conn.max_readahead = arg->max_readahead; |
| 1779 | if (arg->flags & FUSE_ASYNC_READ) |
| 1780 | f->conn.capable |= FUSE_CAP_ASYNC_READ; |
| 1781 | if (arg->flags & FUSE_POSIX_LOCKS) |
| 1782 | f->conn.capable |= FUSE_CAP_POSIX_LOCKS; |
| 1783 | if (arg->flags & FUSE_ATOMIC_O_TRUNC) |
| 1784 | f->conn.capable |= FUSE_CAP_ATOMIC_O_TRUNC; |
| 1785 | if (arg->flags & FUSE_EXPORT_SUPPORT) |
| 1786 | f->conn.capable |= FUSE_CAP_EXPORT_SUPPORT; |
| 1787 | if (arg->flags & FUSE_BIG_WRITES) |
| 1788 | f->conn.capable |= FUSE_CAP_BIG_WRITES; |
| 1789 | if (arg->flags & FUSE_DONT_MASK) |
| 1790 | f->conn.capable |= FUSE_CAP_DONT_MASK; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1791 | if (arg->flags & FUSE_FLOCK_LOCKS) |
| 1792 | f->conn.capable |= FUSE_CAP_FLOCK_LOCKS; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1793 | } else { |
| 1794 | f->conn.async_read = 0; |
| 1795 | f->conn.max_readahead = 0; |
| 1796 | } |
| 1797 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1798 | if (req->f->conn.proto_minor >= 14) { |
| 1799 | #ifdef HAVE_SPLICE |
| 1800 | #ifdef HAVE_VMSPLICE |
| 1801 | f->conn.capable |= FUSE_CAP_SPLICE_WRITE | FUSE_CAP_SPLICE_MOVE; |
| 1802 | if (f->splice_write) |
| 1803 | f->conn.want |= FUSE_CAP_SPLICE_WRITE; |
| 1804 | if (f->splice_move) |
| 1805 | f->conn.want |= FUSE_CAP_SPLICE_MOVE; |
| 1806 | #endif |
| 1807 | f->conn.capable |= FUSE_CAP_SPLICE_READ; |
| 1808 | if (f->splice_read) |
| 1809 | f->conn.want |= FUSE_CAP_SPLICE_READ; |
| 1810 | #endif |
| 1811 | } |
| 1812 | if (req->f->conn.proto_minor >= 18) |
| 1813 | f->conn.capable |= FUSE_CAP_IOCTL_DIR; |
| 1814 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1815 | if (f->atomic_o_trunc) |
| 1816 | f->conn.want |= FUSE_CAP_ATOMIC_O_TRUNC; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1817 | if (f->op.getlk && f->op.setlk && !f->no_remote_posix_lock) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1818 | f->conn.want |= FUSE_CAP_POSIX_LOCKS; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1819 | if (f->op.flock && !f->no_remote_flock) |
| 1820 | f->conn.want |= FUSE_CAP_FLOCK_LOCKS; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1821 | if (f->big_writes) |
| 1822 | f->conn.want |= FUSE_CAP_BIG_WRITES; |
| 1823 | |
| 1824 | if (bufsize < FUSE_MIN_READ_BUFFER) { |
| 1825 | fprintf(stderr, "fuse: warning: buffer size too small: %zu\n", |
| 1826 | bufsize); |
| 1827 | bufsize = FUSE_MIN_READ_BUFFER; |
| 1828 | } |
| 1829 | |
| 1830 | bufsize -= 4096; |
| 1831 | if (bufsize < f->conn.max_write) |
| 1832 | f->conn.max_write = bufsize; |
| 1833 | |
| 1834 | f->got_init = 1; |
| 1835 | if (f->op.init) |
| 1836 | f->op.init(f->userdata, &f->conn); |
| 1837 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1838 | if (f->no_splice_read) |
| 1839 | f->conn.want &= ~FUSE_CAP_SPLICE_READ; |
| 1840 | if (f->no_splice_write) |
| 1841 | f->conn.want &= ~FUSE_CAP_SPLICE_WRITE; |
| 1842 | if (f->no_splice_move) |
| 1843 | f->conn.want &= ~FUSE_CAP_SPLICE_MOVE; |
| 1844 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1845 | if (f->conn.async_read || (f->conn.want & FUSE_CAP_ASYNC_READ)) |
| 1846 | outarg.flags |= FUSE_ASYNC_READ; |
| 1847 | if (f->conn.want & FUSE_CAP_POSIX_LOCKS) |
| 1848 | outarg.flags |= FUSE_POSIX_LOCKS; |
| 1849 | if (f->conn.want & FUSE_CAP_ATOMIC_O_TRUNC) |
| 1850 | outarg.flags |= FUSE_ATOMIC_O_TRUNC; |
| 1851 | if (f->conn.want & FUSE_CAP_EXPORT_SUPPORT) |
| 1852 | outarg.flags |= FUSE_EXPORT_SUPPORT; |
| 1853 | if (f->conn.want & FUSE_CAP_BIG_WRITES) |
| 1854 | outarg.flags |= FUSE_BIG_WRITES; |
| 1855 | if (f->conn.want & FUSE_CAP_DONT_MASK) |
| 1856 | outarg.flags |= FUSE_DONT_MASK; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1857 | if (f->conn.want & FUSE_CAP_FLOCK_LOCKS) |
| 1858 | outarg.flags |= FUSE_FLOCK_LOCKS; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1859 | outarg.max_readahead = f->conn.max_readahead; |
| 1860 | outarg.max_write = f->conn.max_write; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1861 | if (f->conn.proto_minor >= 13) { |
| 1862 | if (f->conn.max_background >= (1 << 16)) |
| 1863 | f->conn.max_background = (1 << 16) - 1; |
| 1864 | if (f->conn.congestion_threshold > f->conn.max_background) |
| 1865 | f->conn.congestion_threshold = f->conn.max_background; |
| 1866 | if (!f->conn.congestion_threshold) { |
| 1867 | f->conn.congestion_threshold = |
| 1868 | f->conn.max_background * 3 / 4; |
| 1869 | } |
| 1870 | |
| 1871 | outarg.max_background = f->conn.max_background; |
| 1872 | outarg.congestion_threshold = f->conn.congestion_threshold; |
| 1873 | } |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1874 | |
| 1875 | if (f->debug) { |
| 1876 | fprintf(stderr, " INIT: %u.%u\n", outarg.major, outarg.minor); |
| 1877 | fprintf(stderr, " flags=0x%08x\n", outarg.flags); |
| 1878 | fprintf(stderr, " max_readahead=0x%08x\n", |
| 1879 | outarg.max_readahead); |
| 1880 | fprintf(stderr, " max_write=0x%08x\n", outarg.max_write); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1881 | fprintf(stderr, " max_background=%i\n", |
| 1882 | outarg.max_background); |
| 1883 | fprintf(stderr, " congestion_threshold=%i\n", |
| 1884 | outarg.congestion_threshold); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1885 | } |
| 1886 | |
| 1887 | send_reply_ok(req, &outarg, arg->minor < 5 ? 8 : sizeof(outarg)); |
| 1888 | } |
| 1889 | |
| 1890 | static void do_destroy(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) |
| 1891 | { |
| 1892 | struct fuse_ll *f = req->f; |
| 1893 | |
| 1894 | (void) nodeid; |
| 1895 | (void) inarg; |
| 1896 | |
| 1897 | f->got_destroy = 1; |
| 1898 | if (f->op.destroy) |
| 1899 | f->op.destroy(f->userdata); |
| 1900 | |
| 1901 | send_reply_ok(req, NULL, 0); |
| 1902 | } |
| 1903 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1904 | static void list_del_nreq(struct fuse_notify_req *nreq) |
| 1905 | { |
| 1906 | struct fuse_notify_req *prev = nreq->prev; |
| 1907 | struct fuse_notify_req *next = nreq->next; |
| 1908 | prev->next = next; |
| 1909 | next->prev = prev; |
| 1910 | } |
| 1911 | |
| 1912 | static void list_add_nreq(struct fuse_notify_req *nreq, |
| 1913 | struct fuse_notify_req *next) |
| 1914 | { |
| 1915 | struct fuse_notify_req *prev = next->prev; |
| 1916 | nreq->next = next; |
| 1917 | nreq->prev = prev; |
| 1918 | prev->next = nreq; |
| 1919 | next->prev = nreq; |
| 1920 | } |
| 1921 | |
| 1922 | static void list_init_nreq(struct fuse_notify_req *nreq) |
| 1923 | { |
| 1924 | nreq->next = nreq; |
| 1925 | nreq->prev = nreq; |
| 1926 | } |
| 1927 | |
| 1928 | static void do_notify_reply(fuse_req_t req, fuse_ino_t nodeid, |
| 1929 | const void *inarg, const struct fuse_buf *buf) |
| 1930 | { |
| 1931 | struct fuse_ll *f = req->f; |
| 1932 | struct fuse_notify_req *nreq; |
| 1933 | struct fuse_notify_req *head; |
| 1934 | |
| 1935 | pthread_mutex_lock(&f->lock); |
| 1936 | head = &f->notify_list; |
| 1937 | for (nreq = head->next; nreq != head; nreq = nreq->next) { |
| 1938 | if (nreq->unique == req->unique) { |
| 1939 | list_del_nreq(nreq); |
| 1940 | break; |
| 1941 | } |
| 1942 | } |
| 1943 | pthread_mutex_unlock(&f->lock); |
| 1944 | |
| 1945 | if (nreq != head) |
| 1946 | nreq->reply(nreq, req, nodeid, inarg, buf); |
| 1947 | } |
| 1948 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1949 | static int send_notify_iov(struct fuse_ll *f, struct fuse_chan *ch, |
| 1950 | int notify_code, struct iovec *iov, int count) |
| 1951 | { |
| 1952 | struct fuse_out_header out; |
| 1953 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1954 | if (!f->got_init) |
| 1955 | return -ENOTCONN; |
| 1956 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1957 | out.unique = 0; |
| 1958 | out.error = notify_code; |
| 1959 | iov[0].iov_base = &out; |
| 1960 | iov[0].iov_len = sizeof(struct fuse_out_header); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1961 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 1962 | return fuse_send_msg(f, ch, iov, count); |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1963 | } |
| 1964 | |
| 1965 | int fuse_lowlevel_notify_poll(struct fuse_pollhandle *ph) |
| 1966 | { |
| 1967 | if (ph != NULL) { |
| 1968 | struct fuse_notify_poll_wakeup_out outarg; |
| 1969 | struct iovec iov[2]; |
| 1970 | |
| 1971 | outarg.kh = ph->kh; |
| 1972 | |
| 1973 | iov[1].iov_base = &outarg; |
| 1974 | iov[1].iov_len = sizeof(outarg); |
| 1975 | |
| 1976 | return send_notify_iov(ph->f, ph->ch, FUSE_NOTIFY_POLL, iov, 2); |
| 1977 | } else { |
| 1978 | return 0; |
| 1979 | } |
| 1980 | } |
| 1981 | |
| 1982 | int fuse_lowlevel_notify_inval_inode(struct fuse_chan *ch, fuse_ino_t ino, |
Matt Mower | 523a059 | 2015-12-13 11:31:00 -0600 | [diff] [blame] | 1983 | loff_t off, loff_t len) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 1984 | { |
| 1985 | struct fuse_notify_inval_inode_out outarg; |
| 1986 | struct fuse_ll *f; |
| 1987 | struct iovec iov[2]; |
| 1988 | |
| 1989 | if (!ch) |
| 1990 | return -EINVAL; |
| 1991 | |
| 1992 | f = (struct fuse_ll *)fuse_session_data(fuse_chan_session(ch)); |
| 1993 | if (!f) |
| 1994 | return -ENODEV; |
| 1995 | |
| 1996 | outarg.ino = ino; |
| 1997 | outarg.off = off; |
| 1998 | outarg.len = len; |
| 1999 | |
| 2000 | iov[1].iov_base = &outarg; |
| 2001 | iov[1].iov_len = sizeof(outarg); |
| 2002 | |
| 2003 | return send_notify_iov(f, ch, FUSE_NOTIFY_INVAL_INODE, iov, 2); |
| 2004 | } |
| 2005 | |
| 2006 | int fuse_lowlevel_notify_inval_entry(struct fuse_chan *ch, fuse_ino_t parent, |
| 2007 | const char *name, size_t namelen) |
| 2008 | { |
| 2009 | struct fuse_notify_inval_entry_out outarg; |
| 2010 | struct fuse_ll *f; |
| 2011 | struct iovec iov[3]; |
| 2012 | |
| 2013 | if (!ch) |
| 2014 | return -EINVAL; |
| 2015 | |
| 2016 | f = (struct fuse_ll *)fuse_session_data(fuse_chan_session(ch)); |
| 2017 | if (!f) |
| 2018 | return -ENODEV; |
| 2019 | |
| 2020 | outarg.parent = parent; |
| 2021 | outarg.namelen = namelen; |
| 2022 | outarg.padding = 0; |
| 2023 | |
| 2024 | iov[1].iov_base = &outarg; |
| 2025 | iov[1].iov_len = sizeof(outarg); |
| 2026 | iov[2].iov_base = (void *)name; |
| 2027 | iov[2].iov_len = namelen + 1; |
| 2028 | |
| 2029 | return send_notify_iov(f, ch, FUSE_NOTIFY_INVAL_ENTRY, iov, 3); |
| 2030 | } |
| 2031 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2032 | int fuse_lowlevel_notify_delete(struct fuse_chan *ch, |
| 2033 | fuse_ino_t parent, fuse_ino_t child, |
| 2034 | const char *name, size_t namelen) |
| 2035 | { |
| 2036 | struct fuse_notify_delete_out outarg; |
| 2037 | struct fuse_ll *f; |
| 2038 | struct iovec iov[3]; |
| 2039 | |
| 2040 | if (!ch) |
| 2041 | return -EINVAL; |
| 2042 | |
| 2043 | f = (struct fuse_ll *)fuse_session_data(fuse_chan_session(ch)); |
| 2044 | if (!f) |
| 2045 | return -ENODEV; |
| 2046 | |
| 2047 | if (f->conn.proto_minor < 18) |
| 2048 | return -ENOSYS; |
| 2049 | |
| 2050 | outarg.parent = parent; |
| 2051 | outarg.child = child; |
| 2052 | outarg.namelen = namelen; |
| 2053 | outarg.padding = 0; |
| 2054 | |
| 2055 | iov[1].iov_base = &outarg; |
| 2056 | iov[1].iov_len = sizeof(outarg); |
| 2057 | iov[2].iov_base = (void *)name; |
| 2058 | iov[2].iov_len = namelen + 1; |
| 2059 | |
| 2060 | return send_notify_iov(f, ch, FUSE_NOTIFY_DELETE, iov, 3); |
| 2061 | } |
| 2062 | |
| 2063 | int fuse_lowlevel_notify_store(struct fuse_chan *ch, fuse_ino_t ino, |
Matt Mower | 523a059 | 2015-12-13 11:31:00 -0600 | [diff] [blame] | 2064 | loff_t offset, struct fuse_bufvec *bufv, |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2065 | enum fuse_buf_copy_flags flags) |
| 2066 | { |
| 2067 | struct fuse_out_header out; |
| 2068 | struct fuse_notify_store_out outarg; |
| 2069 | struct fuse_ll *f; |
| 2070 | struct iovec iov[3]; |
| 2071 | size_t size = fuse_buf_size(bufv); |
| 2072 | int res; |
| 2073 | |
| 2074 | if (!ch) |
| 2075 | return -EINVAL; |
| 2076 | |
| 2077 | f = (struct fuse_ll *)fuse_session_data(fuse_chan_session(ch)); |
| 2078 | if (!f) |
| 2079 | return -ENODEV; |
| 2080 | |
| 2081 | if (f->conn.proto_minor < 15) |
| 2082 | return -ENOSYS; |
| 2083 | |
| 2084 | out.unique = 0; |
| 2085 | out.error = FUSE_NOTIFY_STORE; |
| 2086 | |
| 2087 | outarg.nodeid = ino; |
| 2088 | outarg.offset = offset; |
| 2089 | outarg.size = size; |
| 2090 | |
| 2091 | iov[0].iov_base = &out; |
| 2092 | iov[0].iov_len = sizeof(out); |
| 2093 | iov[1].iov_base = &outarg; |
| 2094 | iov[1].iov_len = sizeof(outarg); |
| 2095 | |
| 2096 | res = fuse_send_data_iov(f, ch, iov, 2, bufv, flags); |
| 2097 | if (res > 0) |
| 2098 | res = -res; |
| 2099 | |
| 2100 | return res; |
| 2101 | } |
| 2102 | |
| 2103 | struct fuse_retrieve_req { |
| 2104 | struct fuse_notify_req nreq; |
| 2105 | void *cookie; |
| 2106 | }; |
| 2107 | |
| 2108 | static void fuse_ll_retrieve_reply(struct fuse_notify_req *nreq, |
| 2109 | fuse_req_t req, fuse_ino_t ino, |
| 2110 | const void *inarg, |
| 2111 | const struct fuse_buf *ibuf) |
| 2112 | { |
| 2113 | struct fuse_ll *f = req->f; |
| 2114 | struct fuse_retrieve_req *rreq = |
| 2115 | container_of(nreq, struct fuse_retrieve_req, nreq); |
| 2116 | const struct fuse_notify_retrieve_in *arg = inarg; |
| 2117 | struct fuse_bufvec bufv = { |
| 2118 | .buf[0] = *ibuf, |
| 2119 | .count = 1, |
| 2120 | }; |
| 2121 | |
| 2122 | if (!(bufv.buf[0].flags & FUSE_BUF_IS_FD)) |
| 2123 | bufv.buf[0].mem = PARAM(arg); |
| 2124 | |
| 2125 | bufv.buf[0].size -= sizeof(struct fuse_in_header) + |
| 2126 | sizeof(struct fuse_notify_retrieve_in); |
| 2127 | |
| 2128 | if (bufv.buf[0].size < arg->size) { |
| 2129 | fprintf(stderr, "fuse: retrieve reply: buffer size too small\n"); |
| 2130 | fuse_reply_none(req); |
| 2131 | goto out; |
| 2132 | } |
| 2133 | bufv.buf[0].size = arg->size; |
| 2134 | |
| 2135 | if (req->f->op.retrieve_reply) { |
| 2136 | req->f->op.retrieve_reply(req, rreq->cookie, ino, |
| 2137 | arg->offset, &bufv); |
| 2138 | } else { |
| 2139 | fuse_reply_none(req); |
| 2140 | } |
| 2141 | out: |
| 2142 | free(rreq); |
| 2143 | if ((ibuf->flags & FUSE_BUF_IS_FD) && bufv.idx < bufv.count) |
| 2144 | fuse_ll_clear_pipe(f); |
| 2145 | } |
| 2146 | |
| 2147 | int fuse_lowlevel_notify_retrieve(struct fuse_chan *ch, fuse_ino_t ino, |
Matt Mower | 523a059 | 2015-12-13 11:31:00 -0600 | [diff] [blame] | 2148 | size_t size, loff_t offset, void *cookie) |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2149 | { |
| 2150 | struct fuse_notify_retrieve_out outarg; |
| 2151 | struct fuse_ll *f; |
| 2152 | struct iovec iov[2]; |
| 2153 | struct fuse_retrieve_req *rreq; |
| 2154 | int err; |
| 2155 | |
| 2156 | if (!ch) |
| 2157 | return -EINVAL; |
| 2158 | |
| 2159 | f = (struct fuse_ll *)fuse_session_data(fuse_chan_session(ch)); |
| 2160 | if (!f) |
| 2161 | return -ENODEV; |
| 2162 | |
| 2163 | if (f->conn.proto_minor < 15) |
| 2164 | return -ENOSYS; |
| 2165 | |
| 2166 | rreq = malloc(sizeof(*rreq)); |
| 2167 | if (rreq == NULL) |
| 2168 | return -ENOMEM; |
| 2169 | |
| 2170 | pthread_mutex_lock(&f->lock); |
| 2171 | rreq->cookie = cookie; |
| 2172 | rreq->nreq.unique = f->notify_ctr++; |
| 2173 | rreq->nreq.reply = fuse_ll_retrieve_reply; |
| 2174 | list_add_nreq(&rreq->nreq, &f->notify_list); |
| 2175 | pthread_mutex_unlock(&f->lock); |
| 2176 | |
| 2177 | outarg.notify_unique = rreq->nreq.unique; |
| 2178 | outarg.nodeid = ino; |
| 2179 | outarg.offset = offset; |
| 2180 | outarg.size = size; |
| 2181 | |
| 2182 | iov[1].iov_base = &outarg; |
| 2183 | iov[1].iov_len = sizeof(outarg); |
| 2184 | |
| 2185 | err = send_notify_iov(f, ch, FUSE_NOTIFY_RETRIEVE, iov, 2); |
| 2186 | if (err) { |
| 2187 | pthread_mutex_lock(&f->lock); |
| 2188 | list_del_nreq(&rreq->nreq); |
| 2189 | pthread_mutex_unlock(&f->lock); |
| 2190 | free(rreq); |
| 2191 | } |
| 2192 | |
| 2193 | return err; |
| 2194 | } |
| 2195 | |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2196 | void *fuse_req_userdata(fuse_req_t req) |
| 2197 | { |
| 2198 | return req->f->userdata; |
| 2199 | } |
| 2200 | |
| 2201 | const struct fuse_ctx *fuse_req_ctx(fuse_req_t req) |
| 2202 | { |
| 2203 | return &req->ctx; |
| 2204 | } |
| 2205 | |
| 2206 | /* |
| 2207 | * The size of fuse_ctx got extended, so need to be careful about |
| 2208 | * incompatibility (i.e. a new binary cannot work with an old |
| 2209 | * library). |
| 2210 | */ |
| 2211 | const struct fuse_ctx *fuse_req_ctx_compat24(fuse_req_t req); |
| 2212 | const struct fuse_ctx *fuse_req_ctx_compat24(fuse_req_t req) |
| 2213 | { |
| 2214 | return fuse_req_ctx(req); |
| 2215 | } |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2216 | #ifndef __NetBSD__ |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2217 | FUSE_SYMVER(".symver fuse_req_ctx_compat24,fuse_req_ctx@FUSE_2.4"); |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2218 | #endif |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2219 | |
| 2220 | |
| 2221 | void fuse_req_interrupt_func(fuse_req_t req, fuse_interrupt_func_t func, |
| 2222 | void *data) |
| 2223 | { |
| 2224 | pthread_mutex_lock(&req->lock); |
| 2225 | pthread_mutex_lock(&req->f->lock); |
| 2226 | req->u.ni.func = func; |
| 2227 | req->u.ni.data = data; |
| 2228 | pthread_mutex_unlock(&req->f->lock); |
| 2229 | if (req->interrupted && func) |
| 2230 | func(req, data); |
| 2231 | pthread_mutex_unlock(&req->lock); |
| 2232 | } |
| 2233 | |
| 2234 | int fuse_req_interrupted(fuse_req_t req) |
| 2235 | { |
| 2236 | int interrupted; |
| 2237 | |
| 2238 | pthread_mutex_lock(&req->f->lock); |
| 2239 | interrupted = req->interrupted; |
| 2240 | pthread_mutex_unlock(&req->f->lock); |
| 2241 | |
| 2242 | return interrupted; |
| 2243 | } |
| 2244 | |
| 2245 | static struct { |
| 2246 | void (*func)(fuse_req_t, fuse_ino_t, const void *); |
| 2247 | const char *name; |
| 2248 | } fuse_ll_ops[] = { |
| 2249 | [FUSE_LOOKUP] = { do_lookup, "LOOKUP" }, |
| 2250 | [FUSE_FORGET] = { do_forget, "FORGET" }, |
| 2251 | [FUSE_GETATTR] = { do_getattr, "GETATTR" }, |
| 2252 | [FUSE_SETATTR] = { do_setattr, "SETATTR" }, |
| 2253 | [FUSE_READLINK] = { do_readlink, "READLINK" }, |
| 2254 | [FUSE_SYMLINK] = { do_symlink, "SYMLINK" }, |
| 2255 | [FUSE_MKNOD] = { do_mknod, "MKNOD" }, |
| 2256 | [FUSE_MKDIR] = { do_mkdir, "MKDIR" }, |
| 2257 | [FUSE_UNLINK] = { do_unlink, "UNLINK" }, |
| 2258 | [FUSE_RMDIR] = { do_rmdir, "RMDIR" }, |
| 2259 | [FUSE_RENAME] = { do_rename, "RENAME" }, |
| 2260 | [FUSE_LINK] = { do_link, "LINK" }, |
| 2261 | [FUSE_OPEN] = { do_open, "OPEN" }, |
| 2262 | [FUSE_READ] = { do_read, "READ" }, |
| 2263 | [FUSE_WRITE] = { do_write, "WRITE" }, |
| 2264 | [FUSE_STATFS] = { do_statfs, "STATFS" }, |
| 2265 | [FUSE_RELEASE] = { do_release, "RELEASE" }, |
| 2266 | [FUSE_FSYNC] = { do_fsync, "FSYNC" }, |
| 2267 | [FUSE_SETXATTR] = { do_setxattr, "SETXATTR" }, |
| 2268 | [FUSE_GETXATTR] = { do_getxattr, "GETXATTR" }, |
| 2269 | [FUSE_LISTXATTR] = { do_listxattr, "LISTXATTR" }, |
| 2270 | [FUSE_REMOVEXATTR] = { do_removexattr, "REMOVEXATTR" }, |
| 2271 | [FUSE_FLUSH] = { do_flush, "FLUSH" }, |
| 2272 | [FUSE_INIT] = { do_init, "INIT" }, |
| 2273 | [FUSE_OPENDIR] = { do_opendir, "OPENDIR" }, |
| 2274 | [FUSE_READDIR] = { do_readdir, "READDIR" }, |
| 2275 | [FUSE_RELEASEDIR] = { do_releasedir, "RELEASEDIR" }, |
| 2276 | [FUSE_FSYNCDIR] = { do_fsyncdir, "FSYNCDIR" }, |
| 2277 | [FUSE_GETLK] = { do_getlk, "GETLK" }, |
| 2278 | [FUSE_SETLK] = { do_setlk, "SETLK" }, |
| 2279 | [FUSE_SETLKW] = { do_setlkw, "SETLKW" }, |
| 2280 | [FUSE_ACCESS] = { do_access, "ACCESS" }, |
| 2281 | [FUSE_CREATE] = { do_create, "CREATE" }, |
| 2282 | [FUSE_INTERRUPT] = { do_interrupt, "INTERRUPT" }, |
| 2283 | [FUSE_BMAP] = { do_bmap, "BMAP" }, |
| 2284 | [FUSE_IOCTL] = { do_ioctl, "IOCTL" }, |
| 2285 | [FUSE_POLL] = { do_poll, "POLL" }, |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2286 | [FUSE_FALLOCATE] = { do_fallocate, "FALLOCATE" }, |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2287 | [FUSE_DESTROY] = { do_destroy, "DESTROY" }, |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2288 | [FUSE_NOTIFY_REPLY] = { (void *) 1, "NOTIFY_REPLY" }, |
| 2289 | [FUSE_BATCH_FORGET] = { do_batch_forget, "BATCH_FORGET" }, |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2290 | [CUSE_INIT] = { cuse_lowlevel_init, "CUSE_INIT" }, |
| 2291 | }; |
| 2292 | |
| 2293 | #define FUSE_MAXOP (sizeof(fuse_ll_ops) / sizeof(fuse_ll_ops[0])) |
| 2294 | |
| 2295 | static const char *opname(enum fuse_opcode opcode) |
| 2296 | { |
| 2297 | if (opcode >= FUSE_MAXOP || !fuse_ll_ops[opcode].name) |
| 2298 | return "???"; |
| 2299 | else |
| 2300 | return fuse_ll_ops[opcode].name; |
| 2301 | } |
| 2302 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2303 | static int fuse_ll_copy_from_pipe(struct fuse_bufvec *dst, |
| 2304 | struct fuse_bufvec *src) |
| 2305 | { |
| 2306 | int res = fuse_buf_copy(dst, src, 0); |
| 2307 | if (res < 0) { |
| 2308 | fprintf(stderr, "fuse: copy from pipe: %s\n", strerror(-res)); |
| 2309 | return res; |
| 2310 | } |
| 2311 | if (res < fuse_buf_size(dst)) { |
| 2312 | fprintf(stderr, "fuse: copy from pipe: short read\n"); |
| 2313 | return -1; |
| 2314 | } |
| 2315 | return 0; |
| 2316 | } |
| 2317 | |
| 2318 | static void fuse_ll_process_buf(void *data, const struct fuse_buf *buf, |
| 2319 | struct fuse_chan *ch) |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2320 | { |
| 2321 | struct fuse_ll *f = (struct fuse_ll *) data; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2322 | const size_t write_header_size = sizeof(struct fuse_in_header) + |
| 2323 | sizeof(struct fuse_write_in); |
| 2324 | struct fuse_bufvec bufv = { .buf[0] = *buf, .count = 1 }; |
| 2325 | struct fuse_bufvec tmpbuf = FUSE_BUFVEC_INIT(write_header_size); |
| 2326 | struct fuse_in_header *in; |
| 2327 | const void *inarg; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2328 | struct fuse_req *req; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2329 | void *mbuf = NULL; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2330 | int err; |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2331 | int res; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2332 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2333 | if (buf->flags & FUSE_BUF_IS_FD) { |
| 2334 | if (buf->size < tmpbuf.buf[0].size) |
| 2335 | tmpbuf.buf[0].size = buf->size; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2336 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2337 | mbuf = malloc(tmpbuf.buf[0].size); |
| 2338 | if (mbuf == NULL) { |
| 2339 | fprintf(stderr, "fuse: failed to allocate header\n"); |
| 2340 | goto clear_pipe; |
| 2341 | } |
| 2342 | tmpbuf.buf[0].mem = mbuf; |
| 2343 | |
| 2344 | res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv); |
| 2345 | if (res < 0) |
| 2346 | goto clear_pipe; |
| 2347 | |
| 2348 | in = mbuf; |
| 2349 | } else { |
| 2350 | in = buf->mem; |
bigbiff bigbiff | 9c75405 | 2013-01-09 09:09:08 -0500 | [diff] [blame] | 2351 | } |
| 2352 | |
Dees_Troy | e34c133 | 2013-02-06 19:13:00 +0000 | [diff] [blame] | 2353 | if (f->debug) { |
| 2354 | fprintf(stderr, |
| 2355 | "unique: %llu, opcode: %s (%i), nodeid: %lu, insize: %zu, pid: %u\n", |
| 2356 | (unsigned long long) in->unique, |
| 2357 | opname((enum fuse_opcode) in->opcode), in->opcode, |
| 2358 | (unsigned long) in->nodeid, buf->size, in->pid); |
| 2359 | } |
| 2360 | |
| 2361 | req = fuse_ll_alloc_req(f); |
| 2362 | if |