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Date: Tue, 15 Mar 2022 14:54:10 +0800
From: kernel test robot <lkp@...el.com>
To: Xiubo Li <xiubli@...hat.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [jlayton:ceph-fscrypt-sparse 66/74] fs/ceph/dir.c:424:10: error:
implicit declaration of function 'ceph_encode_encrypted_dname'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git ceph-fscrypt-sparse
head: 0d355bda666e44314f11974167e8d9bb010a539e
commit: 4378b10dd7df64ef085e3fe2a2251034ee98c4dc [66/74] ceph: dencrypt the dentry names early and once for readdir
config: hexagon-randconfig-r012-20220313 (https://download.01.org/0day-ci/archive/20220315/202203151450.7EtYHIru-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a6b2f50fb47da3baeee10b1906da6e30ac5d26ec)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git/commit/?id=4378b10dd7df64ef085e3fe2a2251034ee98c4dc
git remote add jlayton https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git
git fetch --no-tags jlayton ceph-fscrypt-sparse
git checkout 4378b10dd7df64ef085e3fe2a2251034ee98c4dc
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/net/ethernet/mscc/ fs/ceph/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> fs/ceph/dir.c:424:10: error: implicit declaration of function 'ceph_encode_encrypted_dname' [-Werror,-Wimplicit-function-declaration]
err = ceph_encode_encrypted_dname(inode, &d_name, req->r_path2);
^
fs/ceph/dir.c:424:10: note: did you mean 'ceph_encode_encrypted_fname'?
fs/ceph/crypto.h:175:19: note: 'ceph_encode_encrypted_fname' declared here
static inline int ceph_encode_encrypted_fname(const struct inode *parent,
^
1 error generated.
vim +/ceph_encode_encrypted_dname +424 fs/ceph/dir.c
307
308 static int ceph_readdir(struct file *file, struct dir_context *ctx)
309 {
310 struct ceph_dir_file_info *dfi = file->private_data;
311 struct inode *inode = file_inode(file);
312 struct ceph_inode_info *ci = ceph_inode(inode);
313 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
314 struct ceph_mds_client *mdsc = fsc->mdsc;
315 int i;
316 int err;
317 unsigned frag = -1;
318 struct ceph_mds_reply_info_parsed *rinfo;
319
320 dout("readdir %p file %p pos %llx\n", inode, file, ctx->pos);
321 if (dfi->file_info.flags & CEPH_F_ATEND)
322 return 0;
323
324 /* always start with . and .. */
325 if (ctx->pos == 0) {
326 dout("readdir off 0 -> '.'\n");
327 if (!dir_emit(ctx, ".", 1, ceph_present_inode(inode),
328 inode->i_mode >> 12))
329 return 0;
330 ctx->pos = 1;
331 }
332 if (ctx->pos == 1) {
333 u64 ino;
334 struct dentry *dentry = file->f_path.dentry;
335
336 spin_lock(&dentry->d_lock);
337 ino = ceph_present_inode(dentry->d_parent->d_inode);
338 spin_unlock(&dentry->d_lock);
339
340 dout("readdir off 1 -> '..'\n");
341 if (!dir_emit(ctx, "..", 2, ino, inode->i_mode >> 12))
342 return 0;
343 ctx->pos = 2;
344 }
345
346 err = fscrypt_prepare_readdir(inode);
347 if (err)
348 return err;
349
350 spin_lock(&ci->i_ceph_lock);
351 /* request Fx cap. if have Fx, we don't need to release Fs cap
352 * for later create/unlink. */
353 __ceph_touch_fmode(ci, mdsc, CEPH_FILE_MODE_WR);
354 /* can we use the dcache? */
355 if (ceph_test_mount_opt(fsc, DCACHE) &&
356 !ceph_test_mount_opt(fsc, NOASYNCREADDIR) &&
357 ceph_snap(inode) != CEPH_SNAPDIR &&
358 __ceph_dir_is_complete_ordered(ci) &&
359 __ceph_caps_issued_mask_metric(ci, CEPH_CAP_FILE_SHARED, 1)) {
360 int shared_gen = atomic_read(&ci->i_shared_gen);
361
362 spin_unlock(&ci->i_ceph_lock);
363 err = __dcache_readdir(file, ctx, shared_gen);
364 if (err != -EAGAIN)
365 return err;
366 } else {
367 spin_unlock(&ci->i_ceph_lock);
368 }
369
370 /* proceed with a normal readdir */
371 more:
372 /* do we have the correct frag content buffered? */
373 if (need_send_readdir(dfi, ctx->pos)) {
374 struct ceph_mds_request *req;
375 int op = ceph_snap(inode) == CEPH_SNAPDIR ?
376 CEPH_MDS_OP_LSSNAP : CEPH_MDS_OP_READDIR;
377
378 /* discard old result, if any */
379 if (dfi->last_readdir) {
380 ceph_mdsc_put_request(dfi->last_readdir);
381 dfi->last_readdir = NULL;
382 }
383
384 if (is_hash_order(ctx->pos)) {
385 /* fragtree isn't always accurate. choose frag
386 * based on previous reply when possible. */
387 if (frag == (unsigned)-1)
388 frag = ceph_choose_frag(ci, fpos_hash(ctx->pos),
389 NULL, NULL);
390 } else {
391 frag = fpos_frag(ctx->pos);
392 }
393
394 dout("readdir fetching %llx.%llx frag %x offset '%s'\n",
395 ceph_vinop(inode), frag, dfi->last_name);
396 req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
397 if (IS_ERR(req)) {
398 err = PTR_ERR(req);
399 goto out;
400 }
401 err = ceph_alloc_readdir_reply_buffer(req, inode);
402 if (err) {
403 ceph_mdsc_put_request(req);
404 goto out;
405 }
406 /* hints to request -> mds selection code */
407 req->r_direct_mode = USE_AUTH_MDS;
408 if (op == CEPH_MDS_OP_READDIR) {
409 req->r_direct_hash = ceph_frag_value(frag);
410 __set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
411 req->r_inode_drop = CEPH_CAP_FILE_EXCL;
412 }
413 if (dfi->last_name) {
414 struct qstr d_name = { .name = dfi->last_name,
415 .len = strlen(dfi->last_name) };
416
417 req->r_path2 = kzalloc(NAME_MAX + 1, GFP_KERNEL);
418 if (!req->r_path2) {
419 ceph_mdsc_put_request(req);
420 err = -ENOMEM;
421 goto out;
422 }
423
> 424 err = ceph_encode_encrypted_dname(inode, &d_name, req->r_path2);
425 if (err < 0) {
426 ceph_mdsc_put_request(req);
427 goto out;
428 }
429 } else if (is_hash_order(ctx->pos)) {
430 req->r_args.readdir.offset_hash =
431 cpu_to_le32(fpos_hash(ctx->pos));
432 }
433
434 req->r_dir_release_cnt = dfi->dir_release_count;
435 req->r_dir_ordered_cnt = dfi->dir_ordered_count;
436 req->r_readdir_cache_idx = dfi->readdir_cache_idx;
437 req->r_readdir_offset = dfi->next_offset;
438 req->r_args.readdir.frag = cpu_to_le32(frag);
439 req->r_args.readdir.flags =
440 cpu_to_le16(CEPH_READDIR_REPLY_BITFLAGS);
441
442 req->r_inode = inode;
443 ihold(inode);
444 req->r_dentry = dget(file->f_path.dentry);
445 err = ceph_mdsc_do_request(mdsc, NULL, req);
446 if (err < 0) {
447 ceph_mdsc_put_request(req);
448 goto out;
449 }
450 dout("readdir got and parsed readdir result=%d on "
451 "frag %x, end=%d, complete=%d, hash_order=%d\n",
452 err, frag,
453 (int)req->r_reply_info.dir_end,
454 (int)req->r_reply_info.dir_complete,
455 (int)req->r_reply_info.hash_order);
456
457 rinfo = &req->r_reply_info;
458 if (le32_to_cpu(rinfo->dir_dir->frag) != frag) {
459 frag = le32_to_cpu(rinfo->dir_dir->frag);
460 if (!rinfo->hash_order) {
461 dfi->next_offset = req->r_readdir_offset;
462 /* adjust ctx->pos to beginning of frag */
463 ctx->pos = ceph_make_fpos(frag,
464 dfi->next_offset,
465 false);
466 }
467 }
468
469 dfi->frag = frag;
470 dfi->last_readdir = req;
471
472 if (test_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags)) {
473 dfi->readdir_cache_idx = req->r_readdir_cache_idx;
474 if (dfi->readdir_cache_idx < 0) {
475 /* preclude from marking dir ordered */
476 dfi->dir_ordered_count = 0;
477 } else if (ceph_frag_is_leftmost(frag) &&
478 dfi->next_offset == 2) {
479 /* note dir version at start of readdir so
480 * we can tell if any dentries get dropped */
481 dfi->dir_release_count = req->r_dir_release_cnt;
482 dfi->dir_ordered_count = req->r_dir_ordered_cnt;
483 }
484 } else {
485 dout("readdir !did_prepopulate\n");
486 /* disable readdir cache */
487 dfi->readdir_cache_idx = -1;
488 /* preclude from marking dir complete */
489 dfi->dir_release_count = 0;
490 }
491
492 /* note next offset and last dentry name */
493 if (rinfo->dir_nr > 0) {
494 struct ceph_mds_reply_dir_entry *rde =
495 rinfo->dir_entries + (rinfo->dir_nr-1);
496 unsigned next_offset = req->r_reply_info.dir_end ?
497 2 : (fpos_off(rde->offset) + 1);
498 err = note_last_dentry(dfi, rde->name, rde->name_len,
499 next_offset);
500 if (err) {
501 ceph_mdsc_put_request(dfi->last_readdir);
502 dfi->last_readdir = NULL;
503 goto out;
504 }
505 } else if (req->r_reply_info.dir_end) {
506 dfi->next_offset = 2;
507 /* keep last name */
508 }
509 }
510
511 rinfo = &dfi->last_readdir->r_reply_info;
512 dout("readdir frag %x num %d pos %llx chunk first %llx\n",
513 dfi->frag, rinfo->dir_nr, ctx->pos,
514 rinfo->dir_nr ? rinfo->dir_entries[0].offset : 0LL);
515
516 i = 0;
517 /* search start position */
518 if (rinfo->dir_nr > 0) {
519 int step, nr = rinfo->dir_nr;
520 while (nr > 0) {
521 step = nr >> 1;
522 if (rinfo->dir_entries[i + step].offset < ctx->pos) {
523 i += step + 1;
524 nr -= step + 1;
525 } else {
526 nr = step;
527 }
528 }
529 }
530 for (; i < rinfo->dir_nr; i++) {
531 struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i;
532
533 BUG_ON(rde->offset < ctx->pos);
534 BUG_ON(!rde->inode.in);
535
536 ctx->pos = rde->offset;
537 dout("readdir (%d/%d) -> %llx '%.*s' %p\n",
538 i, rinfo->dir_nr, ctx->pos,
539 rde->name_len, rde->name, &rde->inode.in);
540
541 if (!dir_emit(ctx, rde->name, rde->name_len,
542 ceph_present_ino(inode->i_sb, le64_to_cpu(rde->inode.in->ino)),
543 le32_to_cpu(rde->inode.in->mode) >> 12)) {
544 /*
545 * NOTE: Here no need to put the 'dfi->last_readdir',
546 * because when dir_emit stops us it's most likely
547 * doesn't have enough memory, etc. So for next readdir
548 * it will continue.
549 */
550 dout("filldir stopping us...\n");
551 err = 0;
552 goto out;
553 }
554
555 /* Reset the lengths to their original allocated vals */
556 ctx->pos++;
557 }
558
559 ceph_mdsc_put_request(dfi->last_readdir);
560 dfi->last_readdir = NULL;
561
562 if (dfi->next_offset > 2) {
563 frag = dfi->frag;
564 goto more;
565 }
566
567 /* more frags? */
568 if (!ceph_frag_is_rightmost(dfi->frag)) {
569 frag = ceph_frag_next(dfi->frag);
570 if (is_hash_order(ctx->pos)) {
571 loff_t new_pos = ceph_make_fpos(ceph_frag_value(frag),
572 dfi->next_offset, true);
573 if (new_pos > ctx->pos)
574 ctx->pos = new_pos;
575 /* keep last_name */
576 } else {
577 ctx->pos = ceph_make_fpos(frag, dfi->next_offset,
578 false);
579 kfree(dfi->last_name);
580 dfi->last_name = NULL;
581 }
582 dout("readdir next frag is %x\n", frag);
583 goto more;
584 }
585 dfi->file_info.flags |= CEPH_F_ATEND;
586
587 /*
588 * if dir_release_count still matches the dir, no dentries
589 * were released during the whole readdir, and we should have
590 * the complete dir contents in our cache.
591 */
592 if (atomic64_read(&ci->i_release_count) ==
593 dfi->dir_release_count) {
594 spin_lock(&ci->i_ceph_lock);
595 if (dfi->dir_ordered_count ==
596 atomic64_read(&ci->i_ordered_count)) {
597 dout(" marking %p complete and ordered\n", inode);
598 /* use i_size to track number of entries in
599 * readdir cache */
600 BUG_ON(dfi->readdir_cache_idx < 0);
601 i_size_write(inode, dfi->readdir_cache_idx *
602 sizeof(struct dentry*));
603 } else {
604 dout(" marking %p complete\n", inode);
605 }
606 __ceph_dir_set_complete(ci, dfi->dir_release_count,
607 dfi->dir_ordered_count);
608 spin_unlock(&ci->i_ceph_lock);
609 }
610 err = 0;
611 dout("readdir %p file %p done.\n", inode, file);
612 out:
613 return err;
614 }
615
---
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