| 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * (C) 2001 Clemson University and The University of Chicago |
| 4 | * Copyright 2018 Omnibond Systems, L.L.C. |
| 5 | * |
| 6 | * See COPYING in top-level directory. |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * Linux VFS inode operations. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/blkdev.h> |
| 14 | #include <linux/fileattr.h> |
| 15 | #include "protocol.h" |
| 16 | #include "orangefs-kernel.h" |
| 17 | #include "orangefs-bufmap.h" |
| 18 | |
| 19 | static int orangefs_writepage_locked(struct page *page, |
| 20 | struct writeback_control *wbc) |
| 21 | { |
| 22 | struct inode *inode = page->mapping->host; |
| 23 | struct orangefs_write_range *wr = NULL; |
| 24 | struct iov_iter iter; |
| 25 | struct bio_vec bv; |
| 26 | size_t len, wlen; |
| 27 | ssize_t ret; |
| 28 | loff_t off; |
| 29 | |
| 30 | set_page_writeback(page); |
| 31 | |
| 32 | len = i_size_read(inode); |
| 33 | if (PagePrivate(page)) { |
| 34 | wr = (struct orangefs_write_range *)page_private(page); |
| 35 | WARN_ON(wr->pos >= len); |
| 36 | off = wr->pos; |
| 37 | if (off + wr->len > len) |
| 38 | wlen = len - off; |
| 39 | else |
| 40 | wlen = wr->len; |
| 41 | } else { |
| 42 | WARN_ON(1); |
| 43 | off = page_offset(page); |
| 44 | if (off + PAGE_SIZE > len) |
| 45 | wlen = len - off; |
| 46 | else |
| 47 | wlen = PAGE_SIZE; |
| 48 | } |
| 49 | /* Should've been handled in orangefs_invalidate_folio. */ |
| 50 | WARN_ON(off == len || off + wlen > len); |
| 51 | |
| 52 | WARN_ON(wlen == 0); |
| 53 | bvec_set_page(&bv, page, wlen, off % PAGE_SIZE); |
| 54 | iov_iter_bvec(&iter, ITER_SOURCE, &bv, 1, wlen); |
| 55 | |
| 56 | ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, wlen, |
| 57 | len, wr, NULL, NULL); |
| 58 | if (ret < 0) { |
| 59 | SetPageError(page); |
| 60 | mapping_set_error(page->mapping, ret); |
| 61 | } else { |
| 62 | ret = 0; |
| 63 | } |
| 64 | kfree(detach_page_private(page)); |
| 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | static int orangefs_writepage(struct page *page, struct writeback_control *wbc) |
| 69 | { |
| 70 | int ret; |
| 71 | ret = orangefs_writepage_locked(page, wbc); |
| 72 | unlock_page(page); |
| 73 | end_page_writeback(page); |
| 74 | return ret; |
| 75 | } |
| 76 | |
| 77 | struct orangefs_writepages { |
| 78 | loff_t off; |
| 79 | size_t len; |
| 80 | kuid_t uid; |
| 81 | kgid_t gid; |
| 82 | int maxpages; |
| 83 | int npages; |
| 84 | struct page **pages; |
| 85 | struct bio_vec *bv; |
| 86 | }; |
| 87 | |
| 88 | static int orangefs_writepages_work(struct orangefs_writepages *ow, |
| 89 | struct writeback_control *wbc) |
| 90 | { |
| 91 | struct inode *inode = ow->pages[0]->mapping->host; |
| 92 | struct orangefs_write_range *wrp, wr; |
| 93 | struct iov_iter iter; |
| 94 | ssize_t ret; |
| 95 | size_t len; |
| 96 | loff_t off; |
| 97 | int i; |
| 98 | |
| 99 | len = i_size_read(inode); |
| 100 | |
| 101 | for (i = 0; i < ow->npages; i++) { |
| 102 | set_page_writeback(ow->pages[i]); |
| 103 | bvec_set_page(&ow->bv[i], ow->pages[i], |
| 104 | min(page_offset(ow->pages[i]) + PAGE_SIZE, |
| 105 | ow->off + ow->len) - |
| 106 | max(ow->off, page_offset(ow->pages[i])), |
| 107 | i == 0 ? ow->off - page_offset(ow->pages[i]) : 0); |
| 108 | } |
| 109 | iov_iter_bvec(&iter, ITER_SOURCE, ow->bv, ow->npages, ow->len); |
| 110 | |
| 111 | WARN_ON(ow->off >= len); |
| 112 | if (ow->off + ow->len > len) |
| 113 | ow->len = len - ow->off; |
| 114 | |
| 115 | off = ow->off; |
| 116 | wr.uid = ow->uid; |
| 117 | wr.gid = ow->gid; |
| 118 | ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, ow->len, |
| 119 | 0, &wr, NULL, NULL); |
| 120 | if (ret < 0) { |
| 121 | for (i = 0; i < ow->npages; i++) { |
| 122 | SetPageError(ow->pages[i]); |
| 123 | mapping_set_error(ow->pages[i]->mapping, ret); |
| 124 | if (PagePrivate(ow->pages[i])) { |
| 125 | wrp = (struct orangefs_write_range *) |
| 126 | page_private(ow->pages[i]); |
| 127 | ClearPagePrivate(ow->pages[i]); |
| 128 | put_page(ow->pages[i]); |
| 129 | kfree(wrp); |
| 130 | } |
| 131 | end_page_writeback(ow->pages[i]); |
| 132 | unlock_page(ow->pages[i]); |
| 133 | } |
| 134 | } else { |
| 135 | ret = 0; |
| 136 | for (i = 0; i < ow->npages; i++) { |
| 137 | if (PagePrivate(ow->pages[i])) { |
| 138 | wrp = (struct orangefs_write_range *) |
| 139 | page_private(ow->pages[i]); |
| 140 | ClearPagePrivate(ow->pages[i]); |
| 141 | put_page(ow->pages[i]); |
| 142 | kfree(wrp); |
| 143 | } |
| 144 | end_page_writeback(ow->pages[i]); |
| 145 | unlock_page(ow->pages[i]); |
| 146 | } |
| 147 | } |
| 148 | return ret; |
| 149 | } |
| 150 | |
| 151 | static int orangefs_writepages_callback(struct folio *folio, |
| 152 | struct writeback_control *wbc, void *data) |
| 153 | { |
| 154 | struct orangefs_writepages *ow = data; |
| 155 | struct orangefs_write_range *wr = folio->private; |
| 156 | int ret; |
| 157 | |
| 158 | if (!wr) { |
| 159 | folio_unlock(folio); |
| 160 | /* It's not private so there's nothing to write, right? */ |
| 161 | printk("writepages_callback not private!\n"); |
| 162 | BUG(); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | ret = -1; |
| 167 | if (ow->npages == 0) { |
| 168 | ow->off = wr->pos; |
| 169 | ow->len = wr->len; |
| 170 | ow->uid = wr->uid; |
| 171 | ow->gid = wr->gid; |
| 172 | ow->pages[ow->npages++] = &folio->page; |
| 173 | ret = 0; |
| 174 | goto done; |
| 175 | } |
| 176 | if (!uid_eq(ow->uid, wr->uid) || !gid_eq(ow->gid, wr->gid)) { |
| 177 | orangefs_writepages_work(ow, wbc); |
| 178 | ow->npages = 0; |
| 179 | ret = -1; |
| 180 | goto done; |
| 181 | } |
| 182 | if (ow->off + ow->len == wr->pos) { |
| 183 | ow->len += wr->len; |
| 184 | ow->pages[ow->npages++] = &folio->page; |
| 185 | ret = 0; |
| 186 | goto done; |
| 187 | } |
| 188 | done: |
| 189 | if (ret == -1) { |
| 190 | if (ow->npages) { |
| 191 | orangefs_writepages_work(ow, wbc); |
| 192 | ow->npages = 0; |
| 193 | } |
| 194 | ret = orangefs_writepage_locked(&folio->page, wbc); |
| 195 | mapping_set_error(folio->mapping, ret); |
| 196 | folio_unlock(folio); |
| 197 | folio_end_writeback(folio); |
| 198 | } else { |
| 199 | if (ow->npages == ow->maxpages) { |
| 200 | orangefs_writepages_work(ow, wbc); |
| 201 | ow->npages = 0; |
| 202 | } |
| 203 | } |
| 204 | return ret; |
| 205 | } |
| 206 | |
| 207 | static int orangefs_writepages(struct address_space *mapping, |
| 208 | struct writeback_control *wbc) |
| 209 | { |
| 210 | struct orangefs_writepages *ow; |
| 211 | struct blk_plug plug; |
| 212 | int ret; |
| 213 | ow = kzalloc(sizeof(struct orangefs_writepages), GFP_KERNEL); |
| 214 | if (!ow) |
| 215 | return -ENOMEM; |
| 216 | ow->maxpages = orangefs_bufmap_size_query()/PAGE_SIZE; |
| 217 | ow->pages = kcalloc(ow->maxpages, sizeof(struct page *), GFP_KERNEL); |
| 218 | if (!ow->pages) { |
| 219 | kfree(ow); |
| 220 | return -ENOMEM; |
| 221 | } |
| 222 | ow->bv = kcalloc(ow->maxpages, sizeof(struct bio_vec), GFP_KERNEL); |
| 223 | if (!ow->bv) { |
| 224 | kfree(ow->pages); |
| 225 | kfree(ow); |
| 226 | return -ENOMEM; |
| 227 | } |
| 228 | blk_start_plug(&plug); |
| 229 | ret = write_cache_pages(mapping, wbc, orangefs_writepages_callback, ow); |
| 230 | if (ow->npages) |
| 231 | ret = orangefs_writepages_work(ow, wbc); |
| 232 | blk_finish_plug(&plug); |
| 233 | kfree(ow->pages); |
| 234 | kfree(ow->bv); |
| 235 | kfree(ow); |
| 236 | return ret; |
| 237 | } |
| 238 | |
| 239 | static int orangefs_launder_folio(struct folio *); |
| 240 | |
| 241 | static void orangefs_readahead(struct readahead_control *rac) |
| 242 | { |
| 243 | loff_t offset; |
| 244 | struct iov_iter iter; |
| 245 | struct inode *inode = rac->mapping->host; |
| 246 | struct xarray *i_pages; |
| 247 | struct folio *folio; |
| 248 | loff_t new_start = readahead_pos(rac); |
| 249 | int ret; |
| 250 | size_t new_len = 0; |
| 251 | |
| 252 | loff_t bytes_remaining = inode->i_size - readahead_pos(rac); |
| 253 | loff_t pages_remaining = bytes_remaining / PAGE_SIZE; |
| 254 | |
| 255 | if (pages_remaining >= 1024) |
| 256 | new_len = 4194304; |
| 257 | else if (pages_remaining > readahead_count(rac)) |
| 258 | new_len = bytes_remaining; |
| 259 | |
| 260 | if (new_len) |
| 261 | readahead_expand(rac, new_start, new_len); |
| 262 | |
| 263 | offset = readahead_pos(rac); |
| 264 | i_pages = &rac->mapping->i_pages; |
| 265 | |
| 266 | iov_iter_xarray(&iter, ITER_DEST, i_pages, offset, readahead_length(rac)); |
| 267 | |
| 268 | /* read in the pages. */ |
| 269 | if ((ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, |
| 270 | &offset, &iter, readahead_length(rac), |
| 271 | inode->i_size, NULL, NULL, rac->file)) < 0) |
| 272 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 273 | "%s: wait_for_direct_io failed. \n", __func__); |
| 274 | else |
| 275 | ret = 0; |
| 276 | |
| 277 | /* clean up. */ |
| 278 | while ((folio = readahead_folio(rac))) { |
| 279 | if (!ret) |
| 280 | folio_mark_uptodate(folio); |
| 281 | folio_unlock(folio); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | static int orangefs_read_folio(struct file *file, struct folio *folio) |
| 286 | { |
| 287 | struct inode *inode = folio->mapping->host; |
| 288 | struct iov_iter iter; |
| 289 | struct bio_vec bv; |
| 290 | ssize_t ret; |
| 291 | loff_t off; /* offset of this folio in the file */ |
| 292 | |
| 293 | if (folio_test_dirty(folio)) |
| 294 | orangefs_launder_folio(folio); |
| 295 | |
| 296 | off = folio_pos(folio); |
| 297 | bvec_set_folio(&bv, folio, folio_size(folio), 0); |
| 298 | iov_iter_bvec(&iter, ITER_DEST, &bv, 1, folio_size(folio)); |
| 299 | |
| 300 | ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, &off, &iter, |
| 301 | folio_size(folio), inode->i_size, NULL, NULL, file); |
| 302 | /* this will only zero remaining unread portions of the folio data */ |
| 303 | iov_iter_zero(~0U, &iter); |
| 304 | /* takes care of potential aliasing */ |
| 305 | flush_dcache_folio(folio); |
| 306 | if (ret < 0) { |
| 307 | folio_set_error(folio); |
| 308 | } else { |
| 309 | folio_mark_uptodate(folio); |
| 310 | ret = 0; |
| 311 | } |
| 312 | /* unlock the folio after the ->read_folio() routine completes */ |
| 313 | folio_unlock(folio); |
| 314 | return ret; |
| 315 | } |
| 316 | |
| 317 | static int orangefs_write_begin(struct file *file, |
| 318 | struct address_space *mapping, loff_t pos, unsigned len, |
| 319 | struct page **pagep, void **fsdata) |
| 320 | { |
| 321 | struct orangefs_write_range *wr; |
| 322 | struct folio *folio; |
| 323 | struct page *page; |
| 324 | pgoff_t index; |
| 325 | int ret; |
| 326 | |
| 327 | index = pos >> PAGE_SHIFT; |
| 328 | |
| 329 | page = grab_cache_page_write_begin(mapping, index); |
| 330 | if (!page) |
| 331 | return -ENOMEM; |
| 332 | |
| 333 | *pagep = page; |
| 334 | folio = page_folio(page); |
| 335 | |
| 336 | if (folio_test_dirty(folio) && !folio_test_private(folio)) { |
| 337 | /* |
| 338 | * Should be impossible. If it happens, launder the page |
| 339 | * since we don't know what's dirty. This will WARN in |
| 340 | * orangefs_writepage_locked. |
| 341 | */ |
| 342 | ret = orangefs_launder_folio(folio); |
| 343 | if (ret) |
| 344 | return ret; |
| 345 | } |
| 346 | if (folio_test_private(folio)) { |
| 347 | struct orangefs_write_range *wr; |
| 348 | wr = folio_get_private(folio); |
| 349 | if (wr->pos + wr->len == pos && |
| 350 | uid_eq(wr->uid, current_fsuid()) && |
| 351 | gid_eq(wr->gid, current_fsgid())) { |
| 352 | wr->len += len; |
| 353 | goto okay; |
| 354 | } else { |
| 355 | ret = orangefs_launder_folio(folio); |
| 356 | if (ret) |
| 357 | return ret; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | wr = kmalloc(sizeof *wr, GFP_KERNEL); |
| 362 | if (!wr) |
| 363 | return -ENOMEM; |
| 364 | |
| 365 | wr->pos = pos; |
| 366 | wr->len = len; |
| 367 | wr->uid = current_fsuid(); |
| 368 | wr->gid = current_fsgid(); |
| 369 | folio_attach_private(folio, wr); |
| 370 | okay: |
| 371 | return 0; |
| 372 | } |
| 373 | |
| 374 | static int orangefs_write_end(struct file *file, struct address_space *mapping, |
| 375 | loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) |
| 376 | { |
| 377 | struct inode *inode = page->mapping->host; |
| 378 | loff_t last_pos = pos + copied; |
| 379 | |
| 380 | /* |
| 381 | * No need to use i_size_read() here, the i_size |
| 382 | * cannot change under us because we hold the i_mutex. |
| 383 | */ |
| 384 | if (last_pos > inode->i_size) |
| 385 | i_size_write(inode, last_pos); |
| 386 | |
| 387 | /* zero the stale part of the page if we did a short copy */ |
| 388 | if (!PageUptodate(page)) { |
| 389 | unsigned from = pos & (PAGE_SIZE - 1); |
| 390 | if (copied < len) { |
| 391 | zero_user(page, from + copied, len - copied); |
| 392 | } |
| 393 | /* Set fully written pages uptodate. */ |
| 394 | if (pos == page_offset(page) && |
| 395 | (len == PAGE_SIZE || pos + len == inode->i_size)) { |
| 396 | zero_user_segment(page, from + copied, PAGE_SIZE); |
| 397 | SetPageUptodate(page); |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | set_page_dirty(page); |
| 402 | unlock_page(page); |
| 403 | put_page(page); |
| 404 | |
| 405 | mark_inode_dirty_sync(file_inode(file)); |
| 406 | return copied; |
| 407 | } |
| 408 | |
| 409 | static void orangefs_invalidate_folio(struct folio *folio, |
| 410 | size_t offset, size_t length) |
| 411 | { |
| 412 | struct orangefs_write_range *wr = folio_get_private(folio); |
| 413 | |
| 414 | if (offset == 0 && length == PAGE_SIZE) { |
| 415 | kfree(folio_detach_private(folio)); |
| 416 | return; |
| 417 | /* write range entirely within invalidate range (or equal) */ |
| 418 | } else if (folio_pos(folio) + offset <= wr->pos && |
| 419 | wr->pos + wr->len <= folio_pos(folio) + offset + length) { |
| 420 | kfree(folio_detach_private(folio)); |
| 421 | /* XXX is this right? only caller in fs */ |
| 422 | folio_cancel_dirty(folio); |
| 423 | return; |
| 424 | /* invalidate range chops off end of write range */ |
| 425 | } else if (wr->pos < folio_pos(folio) + offset && |
| 426 | wr->pos + wr->len <= folio_pos(folio) + offset + length && |
| 427 | folio_pos(folio) + offset < wr->pos + wr->len) { |
| 428 | size_t x; |
| 429 | x = wr->pos + wr->len - (folio_pos(folio) + offset); |
| 430 | WARN_ON(x > wr->len); |
| 431 | wr->len -= x; |
| 432 | wr->uid = current_fsuid(); |
| 433 | wr->gid = current_fsgid(); |
| 434 | /* invalidate range chops off beginning of write range */ |
| 435 | } else if (folio_pos(folio) + offset <= wr->pos && |
| 436 | folio_pos(folio) + offset + length < wr->pos + wr->len && |
| 437 | wr->pos < folio_pos(folio) + offset + length) { |
| 438 | size_t x; |
| 439 | x = folio_pos(folio) + offset + length - wr->pos; |
| 440 | WARN_ON(x > wr->len); |
| 441 | wr->pos += x; |
| 442 | wr->len -= x; |
| 443 | wr->uid = current_fsuid(); |
| 444 | wr->gid = current_fsgid(); |
| 445 | /* invalidate range entirely within write range (punch hole) */ |
| 446 | } else if (wr->pos < folio_pos(folio) + offset && |
| 447 | folio_pos(folio) + offset + length < wr->pos + wr->len) { |
| 448 | /* XXX what do we do here... should not WARN_ON */ |
| 449 | WARN_ON(1); |
| 450 | /* punch hole */ |
| 451 | /* |
| 452 | * should we just ignore this and write it out anyway? |
| 453 | * it hardly makes sense |
| 454 | */ |
| 455 | return; |
| 456 | /* non-overlapping ranges */ |
| 457 | } else { |
| 458 | /* WARN if they do overlap */ |
| 459 | if (!((folio_pos(folio) + offset + length <= wr->pos) ^ |
| 460 | (wr->pos + wr->len <= folio_pos(folio) + offset))) { |
| 461 | WARN_ON(1); |
| 462 | printk("invalidate range offset %llu length %zu\n", |
| 463 | folio_pos(folio) + offset, length); |
| 464 | printk("write range offset %llu length %zu\n", |
| 465 | wr->pos, wr->len); |
| 466 | } |
| 467 | return; |
| 468 | } |
| 469 | |
| 470 | /* |
| 471 | * Above there are returns where wr is freed or where we WARN. |
| 472 | * Thus the following runs if wr was modified above. |
| 473 | */ |
| 474 | |
| 475 | orangefs_launder_folio(folio); |
| 476 | } |
| 477 | |
| 478 | static bool orangefs_release_folio(struct folio *folio, gfp_t foo) |
| 479 | { |
| 480 | return !folio_test_private(folio); |
| 481 | } |
| 482 | |
| 483 | static void orangefs_free_folio(struct folio *folio) |
| 484 | { |
| 485 | kfree(folio_detach_private(folio)); |
| 486 | } |
| 487 | |
| 488 | static int orangefs_launder_folio(struct folio *folio) |
| 489 | { |
| 490 | int r = 0; |
| 491 | struct writeback_control wbc = { |
| 492 | .sync_mode = WB_SYNC_ALL, |
| 493 | .nr_to_write = 0, |
| 494 | }; |
| 495 | folio_wait_writeback(folio); |
| 496 | if (folio_clear_dirty_for_io(folio)) { |
| 497 | r = orangefs_writepage_locked(&folio->page, &wbc); |
| 498 | folio_end_writeback(folio); |
| 499 | } |
| 500 | return r; |
| 501 | } |
| 502 | |
| 503 | static ssize_t orangefs_direct_IO(struct kiocb *iocb, |
| 504 | struct iov_iter *iter) |
| 505 | { |
| 506 | /* |
| 507 | * Comment from original do_readv_writev: |
| 508 | * Common entry point for read/write/readv/writev |
| 509 | * This function will dispatch it to either the direct I/O |
| 510 | * or buffered I/O path depending on the mount options and/or |
| 511 | * augmented/extended metadata attached to the file. |
| 512 | * Note: File extended attributes override any mount options. |
| 513 | */ |
| 514 | struct file *file = iocb->ki_filp; |
| 515 | loff_t pos = iocb->ki_pos; |
| 516 | enum ORANGEFS_io_type type = iov_iter_rw(iter) == WRITE ? |
| 517 | ORANGEFS_IO_WRITE : ORANGEFS_IO_READ; |
| 518 | loff_t *offset = &pos; |
| 519 | struct inode *inode = file->f_mapping->host; |
| 520 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
| 521 | struct orangefs_khandle *handle = &orangefs_inode->refn.khandle; |
| 522 | size_t count = iov_iter_count(iter); |
| 523 | ssize_t total_count = 0; |
| 524 | ssize_t ret = -EINVAL; |
| 525 | |
| 526 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 527 | "%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n", |
| 528 | __func__, |
| 529 | handle, |
| 530 | (int)count); |
| 531 | |
| 532 | if (type == ORANGEFS_IO_WRITE) { |
| 533 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 534 | "%s(%pU): proceeding with offset : %llu, " |
| 535 | "size %d\n", |
| 536 | __func__, |
| 537 | handle, |
| 538 | llu(*offset), |
| 539 | (int)count); |
| 540 | } |
| 541 | |
| 542 | if (count == 0) { |
| 543 | ret = 0; |
| 544 | goto out; |
| 545 | } |
| 546 | |
| 547 | while (iov_iter_count(iter)) { |
| 548 | size_t each_count = iov_iter_count(iter); |
| 549 | size_t amt_complete; |
| 550 | |
| 551 | /* how much to transfer in this loop iteration */ |
| 552 | if (each_count > orangefs_bufmap_size_query()) |
| 553 | each_count = orangefs_bufmap_size_query(); |
| 554 | |
| 555 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 556 | "%s(%pU): size of each_count(%d)\n", |
| 557 | __func__, |
| 558 | handle, |
| 559 | (int)each_count); |
| 560 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 561 | "%s(%pU): BEFORE wait_for_io: offset is %d\n", |
| 562 | __func__, |
| 563 | handle, |
| 564 | (int)*offset); |
| 565 | |
| 566 | ret = wait_for_direct_io(type, inode, offset, iter, |
| 567 | each_count, 0, NULL, NULL, file); |
| 568 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 569 | "%s(%pU): return from wait_for_io:%d\n", |
| 570 | __func__, |
| 571 | handle, |
| 572 | (int)ret); |
| 573 | |
| 574 | if (ret < 0) |
| 575 | goto out; |
| 576 | |
| 577 | *offset += ret; |
| 578 | total_count += ret; |
| 579 | amt_complete = ret; |
| 580 | |
| 581 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 582 | "%s(%pU): AFTER wait_for_io: offset is %d\n", |
| 583 | __func__, |
| 584 | handle, |
| 585 | (int)*offset); |
| 586 | |
| 587 | /* |
| 588 | * if we got a short I/O operations, |
| 589 | * fall out and return what we got so far |
| 590 | */ |
| 591 | if (amt_complete < each_count) |
| 592 | break; |
| 593 | } /*end while */ |
| 594 | |
| 595 | out: |
| 596 | if (total_count > 0) |
| 597 | ret = total_count; |
| 598 | if (ret > 0) { |
| 599 | if (type == ORANGEFS_IO_READ) { |
| 600 | file_accessed(file); |
| 601 | } else { |
| 602 | file_update_time(file); |
| 603 | if (*offset > i_size_read(inode)) |
| 604 | i_size_write(inode, *offset); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | gossip_debug(GOSSIP_FILE_DEBUG, |
| 609 | "%s(%pU): Value(%d) returned.\n", |
| 610 | __func__, |
| 611 | handle, |
| 612 | (int)ret); |
| 613 | |
| 614 | return ret; |
| 615 | } |
| 616 | |
| 617 | /** ORANGEFS2 implementation of address space operations */ |
| 618 | static const struct address_space_operations orangefs_address_operations = { |
| 619 | .writepage = orangefs_writepage, |
| 620 | .readahead = orangefs_readahead, |
| 621 | .read_folio = orangefs_read_folio, |
| 622 | .writepages = orangefs_writepages, |
| 623 | .dirty_folio = filemap_dirty_folio, |
| 624 | .write_begin = orangefs_write_begin, |
| 625 | .write_end = orangefs_write_end, |
| 626 | .invalidate_folio = orangefs_invalidate_folio, |
| 627 | .release_folio = orangefs_release_folio, |
| 628 | .free_folio = orangefs_free_folio, |
| 629 | .launder_folio = orangefs_launder_folio, |
| 630 | .direct_IO = orangefs_direct_IO, |
| 631 | }; |
| 632 | |
| 633 | vm_fault_t orangefs_page_mkwrite(struct vm_fault *vmf) |
| 634 | { |
| 635 | struct folio *folio = page_folio(vmf->page); |
| 636 | struct inode *inode = file_inode(vmf->vma->vm_file); |
| 637 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
| 638 | unsigned long *bitlock = &orangefs_inode->bitlock; |
| 639 | vm_fault_t ret; |
| 640 | struct orangefs_write_range *wr; |
| 641 | |
| 642 | sb_start_pagefault(inode->i_sb); |
| 643 | |
| 644 | if (wait_on_bit(bitlock, 1, TASK_KILLABLE)) { |
| 645 | ret = VM_FAULT_RETRY; |
| 646 | goto out; |
| 647 | } |
| 648 | |
| 649 | folio_lock(folio); |
| 650 | if (folio_test_dirty(folio) && !folio_test_private(folio)) { |
| 651 | /* |
| 652 | * Should be impossible. If it happens, launder the folio |
| 653 | * since we don't know what's dirty. This will WARN in |
| 654 | * orangefs_writepage_locked. |
| 655 | */ |
| 656 | if (orangefs_launder_folio(folio)) { |
| 657 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
| 658 | goto out; |
| 659 | } |
| 660 | } |
| 661 | if (folio_test_private(folio)) { |
| 662 | wr = folio_get_private(folio); |
| 663 | if (uid_eq(wr->uid, current_fsuid()) && |
| 664 | gid_eq(wr->gid, current_fsgid())) { |
| 665 | wr->pos = page_offset(vmf->page); |
| 666 | wr->len = PAGE_SIZE; |
| 667 | goto okay; |
| 668 | } else { |
| 669 | if (orangefs_launder_folio(folio)) { |
| 670 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
| 671 | goto out; |
| 672 | } |
| 673 | } |
| 674 | } |
| 675 | wr = kmalloc(sizeof *wr, GFP_KERNEL); |
| 676 | if (!wr) { |
| 677 | ret = VM_FAULT_LOCKED|VM_FAULT_RETRY; |
| 678 | goto out; |
| 679 | } |
| 680 | wr->pos = page_offset(vmf->page); |
| 681 | wr->len = PAGE_SIZE; |
| 682 | wr->uid = current_fsuid(); |
| 683 | wr->gid = current_fsgid(); |
| 684 | folio_attach_private(folio, wr); |
| 685 | okay: |
| 686 | |
| 687 | file_update_time(vmf->vma->vm_file); |
| 688 | if (folio->mapping != inode->i_mapping) { |
| 689 | folio_unlock(folio); |
| 690 | ret = VM_FAULT_LOCKED|VM_FAULT_NOPAGE; |
| 691 | goto out; |
| 692 | } |
| 693 | |
| 694 | /* |
| 695 | * We mark the folio dirty already here so that when freeze is in |
| 696 | * progress, we are guaranteed that writeback during freezing will |
| 697 | * see the dirty folio and writeprotect it again. |
| 698 | */ |
| 699 | folio_mark_dirty(folio); |
| 700 | folio_wait_stable(folio); |
| 701 | ret = VM_FAULT_LOCKED; |
| 702 | out: |
| 703 | sb_end_pagefault(inode->i_sb); |
| 704 | return ret; |
| 705 | } |
| 706 | |
| 707 | static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr) |
| 708 | { |
| 709 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
| 710 | struct orangefs_kernel_op_s *new_op; |
| 711 | loff_t orig_size; |
| 712 | int ret = -EINVAL; |
| 713 | |
| 714 | gossip_debug(GOSSIP_INODE_DEBUG, |
| 715 | "%s: %pU: Handle is %pU | fs_id %d | size is %llu\n", |
| 716 | __func__, |
| 717 | get_khandle_from_ino(inode), |
| 718 | &orangefs_inode->refn.khandle, |
| 719 | orangefs_inode->refn.fs_id, |
| 720 | iattr->ia_size); |
| 721 | |
| 722 | /* Ensure that we have a up to date size, so we know if it changed. */ |
| 723 | ret = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_SIZE); |
| 724 | if (ret == -ESTALE) |
| 725 | ret = -EIO; |
| 726 | if (ret) { |
| 727 | gossip_err("%s: orangefs_inode_getattr failed, ret:%d:.\n", |
| 728 | __func__, ret); |
| 729 | return ret; |
| 730 | } |
| 731 | orig_size = i_size_read(inode); |
| 732 | |
| 733 | /* This is truncate_setsize in a different order. */ |
| 734 | truncate_pagecache(inode, iattr->ia_size); |
| 735 | i_size_write(inode, iattr->ia_size); |
| 736 | if (iattr->ia_size > orig_size) |
| 737 | pagecache_isize_extended(inode, orig_size, iattr->ia_size); |
| 738 | |
| 739 | new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE); |
| 740 | if (!new_op) |
| 741 | return -ENOMEM; |
| 742 | |
| 743 | new_op->upcall.req.truncate.refn = orangefs_inode->refn; |
| 744 | new_op->upcall.req.truncate.size = (__s64) iattr->ia_size; |
| 745 | |
| 746 | ret = service_operation(new_op, |
| 747 | __func__, |
| 748 | get_interruptible_flag(inode)); |
| 749 | |
| 750 | /* |
| 751 | * the truncate has no downcall members to retrieve, but |
| 752 | * the status value tells us if it went through ok or not |
| 753 | */ |
| 754 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret); |
| 755 | |
| 756 | op_release(new_op); |
| 757 | |
| 758 | if (ret != 0) |
| 759 | return ret; |
| 760 | |
| 761 | if (orig_size != i_size_read(inode)) |
| 762 | iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; |
| 763 | |
| 764 | return ret; |
| 765 | } |
| 766 | |
| 767 | int __orangefs_setattr(struct inode *inode, struct iattr *iattr) |
| 768 | { |
| 769 | int ret; |
| 770 | |
| 771 | if (iattr->ia_valid & ATTR_MODE) { |
| 772 | if (iattr->ia_mode & (S_ISVTX)) { |
| 773 | if (is_root_handle(inode)) { |
| 774 | /* |
| 775 | * allow sticky bit to be set on root (since |
| 776 | * it shows up that way by default anyhow), |
| 777 | * but don't show it to the server |
| 778 | */ |
| 779 | iattr->ia_mode -= S_ISVTX; |
| 780 | } else { |
| 781 | gossip_debug(GOSSIP_UTILS_DEBUG, |
| 782 | "User attempted to set sticky bit on non-root directory; returning EINVAL.\n"); |
| 783 | ret = -EINVAL; |
| 784 | goto out; |
| 785 | } |
| 786 | } |
| 787 | if (iattr->ia_mode & (S_ISUID)) { |
| 788 | gossip_debug(GOSSIP_UTILS_DEBUG, |
| 789 | "Attempting to set setuid bit (not supported); returning EINVAL.\n"); |
| 790 | ret = -EINVAL; |
| 791 | goto out; |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | if (iattr->ia_valid & ATTR_SIZE) { |
| 796 | ret = orangefs_setattr_size(inode, iattr); |
| 797 | if (ret) |
| 798 | goto out; |
| 799 | } |
| 800 | |
| 801 | again: |
| 802 | spin_lock(&inode->i_lock); |
| 803 | if (ORANGEFS_I(inode)->attr_valid) { |
| 804 | if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) && |
| 805 | gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) { |
| 806 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; |
| 807 | } else { |
| 808 | spin_unlock(&inode->i_lock); |
| 809 | write_inode_now(inode, 1); |
| 810 | goto again; |
| 811 | } |
| 812 | } else { |
| 813 | ORANGEFS_I(inode)->attr_valid = iattr->ia_valid; |
| 814 | ORANGEFS_I(inode)->attr_uid = current_fsuid(); |
| 815 | ORANGEFS_I(inode)->attr_gid = current_fsgid(); |
| 816 | } |
| 817 | setattr_copy(&nop_mnt_idmap, inode, iattr); |
| 818 | spin_unlock(&inode->i_lock); |
| 819 | mark_inode_dirty(inode); |
| 820 | |
| 821 | ret = 0; |
| 822 | out: |
| 823 | return ret; |
| 824 | } |
| 825 | |
| 826 | int __orangefs_setattr_mode(struct dentry *dentry, struct iattr *iattr) |
| 827 | { |
| 828 | int ret; |
| 829 | struct inode *inode = d_inode(dentry); |
| 830 | |
| 831 | ret = __orangefs_setattr(inode, iattr); |
| 832 | /* change mode on a file that has ACLs */ |
| 833 | if (!ret && (iattr->ia_valid & ATTR_MODE)) |
| 834 | ret = posix_acl_chmod(&nop_mnt_idmap, dentry, inode->i_mode); |
| 835 | return ret; |
| 836 | } |
| 837 | |
| 838 | /* |
| 839 | * Change attributes of an object referenced by dentry. |
| 840 | */ |
| 841 | int orangefs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, |
| 842 | struct iattr *iattr) |
| 843 | { |
| 844 | int ret; |
| 845 | gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n", |
| 846 | dentry); |
| 847 | ret = setattr_prepare(&nop_mnt_idmap, dentry, iattr); |
| 848 | if (ret) |
| 849 | goto out; |
| 850 | ret = __orangefs_setattr_mode(dentry, iattr); |
| 851 | sync_inode_metadata(d_inode(dentry), 1); |
| 852 | out: |
| 853 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n", |
| 854 | ret); |
| 855 | return ret; |
| 856 | } |
| 857 | |
| 858 | /* |
| 859 | * Obtain attributes of an object given a dentry |
| 860 | */ |
| 861 | int orangefs_getattr(struct mnt_idmap *idmap, const struct path *path, |
| 862 | struct kstat *stat, u32 request_mask, unsigned int flags) |
| 863 | { |
| 864 | int ret; |
| 865 | struct inode *inode = path->dentry->d_inode; |
| 866 | |
| 867 | gossip_debug(GOSSIP_INODE_DEBUG, |
| 868 | "orangefs_getattr: called on %pd mask %u\n", |
| 869 | path->dentry, request_mask); |
| 870 | |
| 871 | ret = orangefs_inode_getattr(inode, |
| 872 | request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0); |
| 873 | if (ret == 0) { |
| 874 | generic_fillattr(&nop_mnt_idmap, inode, stat); |
| 875 | |
| 876 | /* override block size reported to stat */ |
| 877 | if (!(request_mask & STATX_SIZE)) |
| 878 | stat->result_mask &= ~STATX_SIZE; |
| 879 | |
| 880 | generic_fill_statx_attr(inode, stat); |
| 881 | } |
| 882 | return ret; |
| 883 | } |
| 884 | |
| 885 | int orangefs_permission(struct mnt_idmap *idmap, |
| 886 | struct inode *inode, int mask) |
| 887 | { |
| 888 | int ret; |
| 889 | |
| 890 | if (mask & MAY_NOT_BLOCK) |
| 891 | return -ECHILD; |
| 892 | |
| 893 | gossip_debug(GOSSIP_INODE_DEBUG, "%s: refreshing\n", __func__); |
| 894 | |
| 895 | /* Make sure the permission (and other common attrs) are up to date. */ |
| 896 | ret = orangefs_inode_getattr(inode, 0); |
| 897 | if (ret < 0) |
| 898 | return ret; |
| 899 | |
| 900 | return generic_permission(&nop_mnt_idmap, inode, mask); |
| 901 | } |
| 902 | |
| 903 | int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags) |
| 904 | { |
| 905 | struct iattr iattr; |
| 906 | gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n", |
| 907 | get_khandle_from_ino(inode)); |
| 908 | generic_update_time(inode, time, flags); |
| 909 | memset(&iattr, 0, sizeof iattr); |
| 910 | if (flags & S_ATIME) |
| 911 | iattr.ia_valid |= ATTR_ATIME; |
| 912 | if (flags & S_CTIME) |
| 913 | iattr.ia_valid |= ATTR_CTIME; |
| 914 | if (flags & S_MTIME) |
| 915 | iattr.ia_valid |= ATTR_MTIME; |
| 916 | return __orangefs_setattr(inode, &iattr); |
| 917 | } |
| 918 | |
| 919 | static int orangefs_fileattr_get(struct dentry *dentry, struct fileattr *fa) |
| 920 | { |
| 921 | u64 val = 0; |
| 922 | int ret; |
| 923 | |
| 924 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__, |
| 925 | dentry); |
| 926 | |
| 927 | ret = orangefs_inode_getxattr(d_inode(dentry), |
| 928 | "user.pvfs2.meta_hint", |
| 929 | &val, sizeof(val)); |
| 930 | if (ret < 0 && ret != -ENODATA) |
| 931 | return ret; |
| 932 | |
| 933 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val); |
| 934 | |
| 935 | fileattr_fill_flags(fa, val); |
| 936 | return 0; |
| 937 | } |
| 938 | |
| 939 | static int orangefs_fileattr_set(struct mnt_idmap *idmap, |
| 940 | struct dentry *dentry, struct fileattr *fa) |
| 941 | { |
| 942 | u64 val = 0; |
| 943 | |
| 944 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__, |
| 945 | dentry); |
| 946 | /* |
| 947 | * ORANGEFS_MIRROR_FL is set internally when the mirroring mode is |
| 948 | * turned on for a file. The user is not allowed to turn on this bit, |
| 949 | * but the bit is present if the user first gets the flags and then |
| 950 | * updates the flags with some new settings. So, we ignore it in the |
| 951 | * following edit. bligon. |
| 952 | */ |
| 953 | if (fileattr_has_fsx(fa) || |
| 954 | (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NOATIME_FL | ORANGEFS_MIRROR_FL))) { |
| 955 | gossip_err("%s: only supports setting one of FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NOATIME_FL\n", |
| 956 | __func__); |
| 957 | return -EOPNOTSUPP; |
| 958 | } |
| 959 | val = fa->flags; |
| 960 | gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val); |
| 961 | return orangefs_inode_setxattr(d_inode(dentry), |
| 962 | "user.pvfs2.meta_hint", |
| 963 | &val, sizeof(val), 0); |
| 964 | } |
| 965 | |
| 966 | /* ORANGEFS2 implementation of VFS inode operations for files */ |
| 967 | static const struct inode_operations orangefs_file_inode_operations = { |
| 968 | .get_inode_acl = orangefs_get_acl, |
| 969 | .set_acl = orangefs_set_acl, |
| 970 | .setattr = orangefs_setattr, |
| 971 | .getattr = orangefs_getattr, |
| 972 | .listxattr = orangefs_listxattr, |
| 973 | .permission = orangefs_permission, |
| 974 | .update_time = orangefs_update_time, |
| 975 | .fileattr_get = orangefs_fileattr_get, |
| 976 | .fileattr_set = orangefs_fileattr_set, |
| 977 | }; |
| 978 | |
| 979 | static int orangefs_init_iops(struct inode *inode) |
| 980 | { |
| 981 | inode->i_mapping->a_ops = &orangefs_address_operations; |
| 982 | |
| 983 | switch (inode->i_mode & S_IFMT) { |
| 984 | case S_IFREG: |
| 985 | inode->i_op = &orangefs_file_inode_operations; |
| 986 | inode->i_fop = &orangefs_file_operations; |
| 987 | break; |
| 988 | case S_IFLNK: |
| 989 | inode->i_op = &orangefs_symlink_inode_operations; |
| 990 | break; |
| 991 | case S_IFDIR: |
| 992 | inode->i_op = &orangefs_dir_inode_operations; |
| 993 | inode->i_fop = &orangefs_dir_operations; |
| 994 | break; |
| 995 | default: |
| 996 | gossip_debug(GOSSIP_INODE_DEBUG, |
| 997 | "%s: unsupported mode\n", |
| 998 | __func__); |
| 999 | return -EINVAL; |
| 1000 | } |
| 1001 | |
| 1002 | return 0; |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * Given an ORANGEFS object identifier (fsid, handle), convert it into |
| 1007 | * a ino_t type that will be used as a hash-index from where the handle will |
| 1008 | * be searched for in the VFS hash table of inodes. |
| 1009 | */ |
| 1010 | static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref) |
| 1011 | { |
| 1012 | if (!ref) |
| 1013 | return 0; |
| 1014 | return orangefs_khandle_to_ino(&(ref->khandle)); |
| 1015 | } |
| 1016 | |
| 1017 | /* |
| 1018 | * Called to set up an inode from iget5_locked. |
| 1019 | */ |
| 1020 | static int orangefs_set_inode(struct inode *inode, void *data) |
| 1021 | { |
| 1022 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
| 1023 | ORANGEFS_I(inode)->refn.fs_id = ref->fs_id; |
| 1024 | ORANGEFS_I(inode)->refn.khandle = ref->khandle; |
| 1025 | ORANGEFS_I(inode)->attr_valid = 0; |
| 1026 | hash_init(ORANGEFS_I(inode)->xattr_cache); |
| 1027 | ORANGEFS_I(inode)->mapping_time = jiffies - 1; |
| 1028 | ORANGEFS_I(inode)->bitlock = 0; |
| 1029 | return 0; |
| 1030 | } |
| 1031 | |
| 1032 | /* |
| 1033 | * Called to determine if handles match. |
| 1034 | */ |
| 1035 | static int orangefs_test_inode(struct inode *inode, void *data) |
| 1036 | { |
| 1037 | struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data; |
| 1038 | struct orangefs_inode_s *orangefs_inode = NULL; |
| 1039 | |
| 1040 | orangefs_inode = ORANGEFS_I(inode); |
| 1041 | /* test handles and fs_ids... */ |
| 1042 | return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle), |
| 1043 | &(ref->khandle)) && |
| 1044 | orangefs_inode->refn.fs_id == ref->fs_id); |
| 1045 | } |
| 1046 | |
| 1047 | /* |
| 1048 | * Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS |
| 1049 | * file handle. |
| 1050 | * |
| 1051 | * @sb: the file system super block instance. |
| 1052 | * @ref: The ORANGEFS object for which we are trying to locate an inode. |
| 1053 | */ |
| 1054 | struct inode *orangefs_iget(struct super_block *sb, |
| 1055 | struct orangefs_object_kref *ref) |
| 1056 | { |
| 1057 | struct inode *inode = NULL; |
| 1058 | unsigned long hash; |
| 1059 | int error; |
| 1060 | |
| 1061 | hash = orangefs_handle_hash(ref); |
| 1062 | inode = iget5_locked(sb, |
| 1063 | hash, |
| 1064 | orangefs_test_inode, |
| 1065 | orangefs_set_inode, |
| 1066 | ref); |
| 1067 | |
| 1068 | if (!inode) |
| 1069 | return ERR_PTR(-ENOMEM); |
| 1070 | |
| 1071 | if (!(inode->i_state & I_NEW)) |
| 1072 | return inode; |
| 1073 | |
| 1074 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
| 1075 | if (error) { |
| 1076 | iget_failed(inode); |
| 1077 | return ERR_PTR(error); |
| 1078 | } |
| 1079 | |
| 1080 | inode->i_ino = hash; /* needed for stat etc */ |
| 1081 | orangefs_init_iops(inode); |
| 1082 | unlock_new_inode(inode); |
| 1083 | |
| 1084 | gossip_debug(GOSSIP_INODE_DEBUG, |
| 1085 | "iget handle %pU, fsid %d hash %ld i_ino %lu\n", |
| 1086 | &ref->khandle, |
| 1087 | ref->fs_id, |
| 1088 | hash, |
| 1089 | inode->i_ino); |
| 1090 | |
| 1091 | return inode; |
| 1092 | } |
| 1093 | |
| 1094 | /* |
| 1095 | * Allocate an inode for a newly created file and insert it into the inode hash. |
| 1096 | */ |
| 1097 | struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir, |
| 1098 | umode_t mode, dev_t dev, struct orangefs_object_kref *ref) |
| 1099 | { |
| 1100 | struct posix_acl *acl = NULL, *default_acl = NULL; |
| 1101 | unsigned long hash = orangefs_handle_hash(ref); |
| 1102 | struct inode *inode; |
| 1103 | int error; |
| 1104 | |
| 1105 | gossip_debug(GOSSIP_INODE_DEBUG, |
| 1106 | "%s:(sb is %p | MAJOR(dev)=%u | MINOR(dev)=%u mode=%o)\n", |
| 1107 | __func__, |
| 1108 | sb, |
| 1109 | MAJOR(dev), |
| 1110 | MINOR(dev), |
| 1111 | mode); |
| 1112 | |
| 1113 | inode = new_inode(sb); |
| 1114 | if (!inode) |
| 1115 | return ERR_PTR(-ENOMEM); |
| 1116 | |
| 1117 | error = posix_acl_create(dir, &mode, &default_acl, &acl); |
| 1118 | if (error) |
| 1119 | goto out_iput; |
| 1120 | |
| 1121 | orangefs_set_inode(inode, ref); |
| 1122 | inode->i_ino = hash; /* needed for stat etc */ |
| 1123 | |
| 1124 | error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW); |
| 1125 | if (error) |
| 1126 | goto out_iput; |
| 1127 | |
| 1128 | orangefs_init_iops(inode); |
| 1129 | inode->i_rdev = dev; |
| 1130 | |
| 1131 | if (default_acl) { |
| 1132 | error = __orangefs_set_acl(inode, default_acl, |
| 1133 | ACL_TYPE_DEFAULT); |
| 1134 | if (error) |
| 1135 | goto out_iput; |
| 1136 | } |
| 1137 | |
| 1138 | if (acl) { |
| 1139 | error = __orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS); |
| 1140 | if (error) |
| 1141 | goto out_iput; |
| 1142 | } |
| 1143 | |
| 1144 | error = insert_inode_locked4(inode, hash, orangefs_test_inode, ref); |
| 1145 | if (error < 0) |
| 1146 | goto out_iput; |
| 1147 | |
| 1148 | gossip_debug(GOSSIP_INODE_DEBUG, |
| 1149 | "Initializing ACL's for inode %pU\n", |
| 1150 | get_khandle_from_ino(inode)); |
| 1151 | if (mode != inode->i_mode) { |
| 1152 | struct iattr iattr = { |
| 1153 | .ia_mode = mode, |
| 1154 | .ia_valid = ATTR_MODE, |
| 1155 | }; |
| 1156 | inode->i_mode = mode; |
| 1157 | __orangefs_setattr(inode, &iattr); |
| 1158 | __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); |
| 1159 | } |
| 1160 | posix_acl_release(acl); |
| 1161 | posix_acl_release(default_acl); |
| 1162 | return inode; |
| 1163 | |
| 1164 | out_iput: |
| 1165 | iput(inode); |
| 1166 | posix_acl_release(acl); |
| 1167 | posix_acl_release(default_acl); |
| 1168 | return ERR_PTR(error); |
| 1169 | } |