dir.c (47237687d73cbeae1dd7a133c3fc3d7239094568) dir.c (d95852777bc8ba6b3ad3397d495c5f9dd8ca8383)
1/*
2 FUSE: Filesystem in Userspace
3 Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
4
5 This program can be distributed under the terms of the GNU GPL.
6 See the file COPYING.
7*/
8

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364}
365
366/*
367 * Atomic create+open operation
368 *
369 * If the filesystem doesn't support this, then fall back to separate
370 * 'mknod' + 'open' requests.
371 */
1/*
2 FUSE: Filesystem in Userspace
3 Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu>
4
5 This program can be distributed under the terms of the GNU GPL.
6 See the file COPYING.
7*/
8

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364}
365
366/*
367 * Atomic create+open operation
368 *
369 * If the filesystem doesn't support this, then fall back to separate
370 * 'mknod' + 'open' requests.
371 */
372static struct file *fuse_create_open(struct inode *dir, struct dentry *entry,
373 struct opendata *od, unsigned flags,
374 umode_t mode, int *opened)
372static int fuse_create_open(struct inode *dir, struct dentry *entry,
373 struct opendata *od, unsigned flags,
374 umode_t mode, int *opened)
375{
376 int err;
377 struct inode *inode;
378 struct fuse_conn *fc = get_fuse_conn(dir);
379 struct fuse_req *req;
380 struct fuse_forget_link *forget;
381 struct fuse_create_in inarg;
382 struct fuse_open_out outopen;

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447 goto out_err;
448 }
449 kfree(forget);
450 d_instantiate(entry, inode);
451 fuse_change_entry_timeout(entry, &outentry);
452 fuse_invalidate_attr(dir);
453 file = finish_open(od, entry, generic_file_open, opened);
454 if (IS_ERR(file)) {
375{
376 int err;
377 struct inode *inode;
378 struct fuse_conn *fc = get_fuse_conn(dir);
379 struct fuse_req *req;
380 struct fuse_forget_link *forget;
381 struct fuse_create_in inarg;
382 struct fuse_open_out outopen;

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447 goto out_err;
448 }
449 kfree(forget);
450 d_instantiate(entry, inode);
451 fuse_change_entry_timeout(entry, &outentry);
452 fuse_invalidate_attr(dir);
453 file = finish_open(od, entry, generic_file_open, opened);
454 if (IS_ERR(file)) {
455 err = PTR_ERR(file);
455 fuse_sync_release(ff, flags);
456 } else {
457 file->private_data = fuse_file_get(ff);
458 fuse_finish_open(inode, file);
456 fuse_sync_release(ff, flags);
457 } else {
458 file->private_data = fuse_file_get(ff);
459 fuse_finish_open(inode, file);
460 err = 0;
459 }
461 }
460 return file;
462 return err;
461
462out_free_ff:
463 fuse_file_free(ff);
464out_put_request:
465 fuse_put_request(fc, req);
466out_put_forget_req:
467 kfree(forget);
468out_err:
463
464out_free_ff:
465 fuse_file_free(ff);
466out_put_request:
467 fuse_put_request(fc, req);
468out_put_forget_req:
469 kfree(forget);
470out_err:
469 return ERR_PTR(err);
471 return err;
470}
471
472static int fuse_mknod(struct inode *, struct dentry *, umode_t, dev_t);
472}
473
474static int fuse_mknod(struct inode *, struct dentry *, umode_t, dev_t);
473static struct file *fuse_atomic_open(struct inode *dir, struct dentry *entry,
474 struct opendata *od, unsigned flags,
475 umode_t mode, int *opened)
475static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
476 struct opendata *od, unsigned flags,
477 umode_t mode, int *opened)
476{
477 int err;
478 struct fuse_conn *fc = get_fuse_conn(dir);
478{
479 int err;
480 struct fuse_conn *fc = get_fuse_conn(dir);
479 struct file *file;
480 struct dentry *res = NULL;
481
482 if (d_unhashed(entry)) {
483 res = fuse_lookup(dir, entry, NULL);
484 if (IS_ERR(res))
481 struct dentry *res = NULL;
482
483 if (d_unhashed(entry)) {
484 res = fuse_lookup(dir, entry, NULL);
485 if (IS_ERR(res))
485 return ERR_CAST(res);
486 return PTR_ERR(res);
486
487 if (res)
488 entry = res;
489 }
490
491 if (!(flags & O_CREAT) || entry->d_inode)
492 goto no_open;
493
494 /* Only creates */
495 *opened |= FILE_CREATED;
496
497 if (fc->no_create)
498 goto mknod;
499
487
488 if (res)
489 entry = res;
490 }
491
492 if (!(flags & O_CREAT) || entry->d_inode)
493 goto no_open;
494
495 /* Only creates */
496 *opened |= FILE_CREATED;
497
498 if (fc->no_create)
499 goto mknod;
500
500 file = fuse_create_open(dir, entry, od, flags, mode, opened);
501 if (PTR_ERR(file) == -ENOSYS) {
501 err = fuse_create_open(dir, entry, od, flags, mode, opened);
502 if (err == -ENOSYS) {
502 fc->no_create = 1;
503 goto mknod;
504 }
505out_dput:
506 dput(res);
503 fc->no_create = 1;
504 goto mknod;
505 }
506out_dput:
507 dput(res);
507 return file;
508 return err;
508
509mknod:
510 err = fuse_mknod(dir, entry, mode, 0);
509
510mknod:
511 err = fuse_mknod(dir, entry, mode, 0);
511 if (err) {
512 file = ERR_PTR(err);
512 if (err)
513 goto out_dput;
513 goto out_dput;
514 }
515no_open:
516 finish_no_open(od, res);
514no_open:
515 finish_no_open(od, res);
517 return NULL;
516 return 1;
518}
519
520/*
521 * Code shared between mknod, mkdir, symlink and link
522 */
523static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
524 struct inode *dir, struct dentry *entry,
525 umode_t mode)

--- 1220 unchanged lines hidden --- 		517}
518
519/*
520 * Code shared between mknod, mkdir, symlink and link
521 */
522static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
523 struct inode *dir, struct dentry *entry,
524 umode_t mode)

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