1 // SPDX-License-Identifier: GPL-2.0
3 * (C) 2001 Clemson University and The University of Chicago
4 * Copyright 2018 Omnibond Systems, L.L.C.
6 * See COPYING in top-level directory.
10 * Linux VFS inode operations.
13 #include <linux/bvec.h>
15 #include "orangefs-kernel.h"
16 #include "orangefs-bufmap.h"
18 static int orangefs_writepage_locked(struct page *page,
19 struct writeback_control *wbc)
21 struct inode *inode = page->mapping->host;
22 struct orangefs_write_range *wr = NULL;
29 set_page_writeback(page);
31 len = i_size_read(inode);
32 if (PagePrivate(page)) {
33 wr = (struct orangefs_write_range *)page_private(page);
34 WARN_ON(wr->pos >= len);
36 if (off + wr->len > len)
42 off = page_offset(page);
43 if (off + PAGE_SIZE > len)
48 /* Should've been handled in orangefs_invalidatepage. */
49 WARN_ON(off == len || off + wlen > len);
53 bv.bv_offset = off % PAGE_SIZE;
55 iov_iter_bvec(&iter, WRITE, &bv, 1, wlen);
57 ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, wlen,
61 mapping_set_error(page->mapping, ret);
67 set_page_private(page, 0);
68 ClearPagePrivate(page);
74 static int orangefs_writepage(struct page *page, struct writeback_control *wbc)
77 ret = orangefs_writepage_locked(page, wbc);
79 end_page_writeback(page);
83 struct orangefs_writepages {
94 static int orangefs_writepages_work(struct orangefs_writepages *ow,
95 struct writeback_control *wbc)
97 struct inode *inode = ow->pages[0]->mapping->host;
98 struct orangefs_write_range *wrp, wr;
105 len = i_size_read(inode);
107 for (i = 0; i < ow->npages; i++) {
108 set_page_writeback(ow->pages[i]);
109 ow->bv[i].bv_page = ow->pages[i];
110 ow->bv[i].bv_len = min(page_offset(ow->pages[i]) + PAGE_SIZE,
112 max(ow->off, page_offset(ow->pages[i]));
114 ow->bv[i].bv_offset = ow->off -
115 page_offset(ow->pages[i]);
117 ow->bv[i].bv_offset = 0;
119 iov_iter_bvec(&iter, WRITE, ow->bv, ow->npages, ow->len);
121 WARN_ON(ow->off >= len);
122 if (ow->off + ow->len > len)
123 ow->len = len - ow->off;
128 ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, ow->len,
131 for (i = 0; i < ow->npages; i++) {
132 SetPageError(ow->pages[i]);
133 mapping_set_error(ow->pages[i]->mapping, ret);
134 if (PagePrivate(ow->pages[i])) {
135 wrp = (struct orangefs_write_range *)
136 page_private(ow->pages[i]);
137 ClearPagePrivate(ow->pages[i]);
138 put_page(ow->pages[i]);
141 end_page_writeback(ow->pages[i]);
142 unlock_page(ow->pages[i]);
146 for (i = 0; i < ow->npages; i++) {
147 if (PagePrivate(ow->pages[i])) {
148 wrp = (struct orangefs_write_range *)
149 page_private(ow->pages[i]);
150 ClearPagePrivate(ow->pages[i]);
151 put_page(ow->pages[i]);
154 end_page_writeback(ow->pages[i]);
155 unlock_page(ow->pages[i]);
161 static int orangefs_writepages_callback(struct page *page,
162 struct writeback_control *wbc, void *data)
164 struct orangefs_writepages *ow = data;
165 struct orangefs_write_range *wr;
168 if (!PagePrivate(page)) {
170 /* It's not private so there's nothing to write, right? */
171 printk("writepages_callback not private!\n");
175 wr = (struct orangefs_write_range *)page_private(page);
178 if (ow->npages == 0) {
183 ow->pages[ow->npages++] = page;
187 if (!uid_eq(ow->uid, wr->uid) || !gid_eq(ow->gid, wr->gid)) {
188 orangefs_writepages_work(ow, wbc);
193 if (ow->off + ow->len == wr->pos) {
195 ow->pages[ow->npages++] = page;
202 orangefs_writepages_work(ow, wbc);
205 ret = orangefs_writepage_locked(page, wbc);
206 mapping_set_error(page->mapping, ret);
208 end_page_writeback(page);
210 if (ow->npages == ow->maxpages) {
211 orangefs_writepages_work(ow, wbc);
218 static int orangefs_writepages(struct address_space *mapping,
219 struct writeback_control *wbc)
221 struct orangefs_writepages *ow;
222 struct blk_plug plug;
224 ow = kzalloc(sizeof(struct orangefs_writepages), GFP_KERNEL);
227 ow->maxpages = orangefs_bufmap_size_query()/PAGE_SIZE;
228 ow->pages = kcalloc(ow->maxpages, sizeof(struct page *), GFP_KERNEL);
233 ow->bv = kcalloc(ow->maxpages, sizeof(struct bio_vec), GFP_KERNEL);
239 blk_start_plug(&plug);
240 ret = write_cache_pages(mapping, wbc, orangefs_writepages_callback, ow);
242 ret = orangefs_writepages_work(ow, wbc);
243 blk_finish_plug(&plug);
250 static int orangefs_launder_page(struct page *);
252 static int orangefs_readpage(struct file *file, struct page *page)
254 struct inode *inode = page->mapping->host;
255 struct iov_iter iter;
258 loff_t off; /* offset into this page */
259 pgoff_t index; /* which page */
260 struct page *next_page;
263 int buffer_index = -1; /* orangefs shared memory slot */
264 int slot_index; /* index into slot */
268 * Get up to this many bytes from Orangefs at a time and try
269 * to fill them into the page cache at once. Tests with dd made
270 * this seem like a reasonable static number, if there was
271 * interest perhaps this number could be made setable through
277 orangefs_launder_page(page);
279 off = page_offset(page);
280 index = off >> PAGE_SHIFT;
282 bv.bv_len = PAGE_SIZE;
284 iov_iter_bvec(&iter, READ, &bv, 1, PAGE_SIZE);
286 ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, &off, &iter,
287 read_size, inode->i_size, NULL, &buffer_index, file);
289 /* this will only zero remaining unread portions of the page data */
290 iov_iter_zero(~0U, &iter);
291 /* takes care of potential aliasing */
292 flush_dcache_page(page);
298 SetPageUptodate(page);
300 ClearPageError(page);
303 /* unlock the page after the ->readpage() routine completes */
306 if (remaining > PAGE_SIZE) {
308 while ((remaining - PAGE_SIZE) >= PAGE_SIZE) {
309 remaining -= PAGE_SIZE;
311 * It is an optimization to try and fill more than one
312 * page... by now we've already gotten the single
313 * page we were after, if stuff doesn't seem to
314 * be going our way at this point just return
315 * and hope for the best.
317 * If we look for pages and they're already there is
318 * one reason to give up, and if they're not there
319 * and we can't create them is another reason.
324 next_page = find_get_page(inode->i_mapping, index);
326 gossip_debug(GOSSIP_FILE_DEBUG,
327 "%s: found next page, quitting\n",
332 next_page = find_or_create_page(inode->i_mapping,
336 * I've never hit this, leave it as a printk for
337 * now so it will be obvious.
340 printk("%s: can't create next page, quitting\n",
344 kaddr = kmap_atomic(next_page);
345 orangefs_bufmap_page_fill(kaddr,
348 kunmap_atomic(kaddr);
349 SetPageUptodate(next_page);
350 unlock_page(next_page);
356 if (buffer_index != -1)
357 orangefs_bufmap_put(buffer_index);
361 static int orangefs_write_begin(struct file *file,
362 struct address_space *mapping,
363 loff_t pos, unsigned len, unsigned flags, struct page **pagep,
366 struct orangefs_write_range *wr;
371 index = pos >> PAGE_SHIFT;
373 page = grab_cache_page_write_begin(mapping, index, flags);
379 if (PageDirty(page) && !PagePrivate(page)) {
381 * Should be impossible. If it happens, launder the page
382 * since we don't know what's dirty. This will WARN in
383 * orangefs_writepage_locked.
385 ret = orangefs_launder_page(page);
389 if (PagePrivate(page)) {
390 struct orangefs_write_range *wr;
391 wr = (struct orangefs_write_range *)page_private(page);
392 if (wr->pos + wr->len == pos &&
393 uid_eq(wr->uid, current_fsuid()) &&
394 gid_eq(wr->gid, current_fsgid())) {
398 ret = orangefs_launder_page(page);
404 wr = kmalloc(sizeof *wr, GFP_KERNEL);
410 wr->uid = current_fsuid();
411 wr->gid = current_fsgid();
412 SetPagePrivate(page);
413 set_page_private(page, (unsigned long)wr);
419 static int orangefs_write_end(struct file *file, struct address_space *mapping,
420 loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata)
422 struct inode *inode = page->mapping->host;
423 loff_t last_pos = pos + copied;
426 * No need to use i_size_read() here, the i_size
427 * cannot change under us because we hold the i_mutex.
429 if (last_pos > inode->i_size)
430 i_size_write(inode, last_pos);
432 /* zero the stale part of the page if we did a short copy */
433 if (!PageUptodate(page)) {
434 unsigned from = pos & (PAGE_SIZE - 1);
436 zero_user(page, from + copied, len - copied);
438 /* Set fully written pages uptodate. */
439 if (pos == page_offset(page) &&
440 (len == PAGE_SIZE || pos + len == inode->i_size)) {
441 zero_user_segment(page, from + copied, PAGE_SIZE);
442 SetPageUptodate(page);
446 set_page_dirty(page);
450 mark_inode_dirty_sync(file_inode(file));
454 static void orangefs_invalidatepage(struct page *page,
458 struct orangefs_write_range *wr;
459 wr = (struct orangefs_write_range *)page_private(page);
461 if (offset == 0 && length == PAGE_SIZE) {
462 kfree((struct orangefs_write_range *)page_private(page));
463 set_page_private(page, 0);
464 ClearPagePrivate(page);
467 /* write range entirely within invalidate range (or equal) */
468 } else if (page_offset(page) + offset <= wr->pos &&
469 wr->pos + wr->len <= page_offset(page) + offset + length) {
470 kfree((struct orangefs_write_range *)page_private(page));
471 set_page_private(page, 0);
472 ClearPagePrivate(page);
474 /* XXX is this right? only caller in fs */
475 cancel_dirty_page(page);
477 /* invalidate range chops off end of write range */
478 } else if (wr->pos < page_offset(page) + offset &&
479 wr->pos + wr->len <= page_offset(page) + offset + length &&
480 page_offset(page) + offset < wr->pos + wr->len) {
482 x = wr->pos + wr->len - (page_offset(page) + offset);
483 WARN_ON(x > wr->len);
485 wr->uid = current_fsuid();
486 wr->gid = current_fsgid();
487 /* invalidate range chops off beginning of write range */
488 } else if (page_offset(page) + offset <= wr->pos &&
489 page_offset(page) + offset + length < wr->pos + wr->len &&
490 wr->pos < page_offset(page) + offset + length) {
492 x = page_offset(page) + offset + length - wr->pos;
493 WARN_ON(x > wr->len);
496 wr->uid = current_fsuid();
497 wr->gid = current_fsgid();
498 /* invalidate range entirely within write range (punch hole) */
499 } else if (wr->pos < page_offset(page) + offset &&
500 page_offset(page) + offset + length < wr->pos + wr->len) {
501 /* XXX what do we do here... should not WARN_ON */
505 * should we just ignore this and write it out anyway?
506 * it hardly makes sense
509 /* non-overlapping ranges */
511 /* WARN if they do overlap */
512 if (!((page_offset(page) + offset + length <= wr->pos) ^
513 (wr->pos + wr->len <= page_offset(page) + offset))) {
515 printk("invalidate range offset %llu length %u\n",
516 page_offset(page) + offset, length);
517 printk("write range offset %llu length %zu\n",
524 * Above there are returns where wr is freed or where we WARN.
525 * Thus the following runs if wr was modified above.
528 orangefs_launder_page(page);
531 static int orangefs_releasepage(struct page *page, gfp_t foo)
533 return !PagePrivate(page);
536 static void orangefs_freepage(struct page *page)
538 if (PagePrivate(page)) {
539 kfree((struct orangefs_write_range *)page_private(page));
540 set_page_private(page, 0);
541 ClearPagePrivate(page);
546 static int orangefs_launder_page(struct page *page)
549 struct writeback_control wbc = {
550 .sync_mode = WB_SYNC_ALL,
553 wait_on_page_writeback(page);
554 if (clear_page_dirty_for_io(page)) {
555 r = orangefs_writepage_locked(page, &wbc);
556 end_page_writeback(page);
561 static ssize_t orangefs_direct_IO(struct kiocb *iocb,
562 struct iov_iter *iter)
565 * Comment from original do_readv_writev:
566 * Common entry point for read/write/readv/writev
567 * This function will dispatch it to either the direct I/O
568 * or buffered I/O path depending on the mount options and/or
569 * augmented/extended metadata attached to the file.
570 * Note: File extended attributes override any mount options.
572 struct file *file = iocb->ki_filp;
573 loff_t pos = iocb->ki_pos;
574 enum ORANGEFS_io_type type = iov_iter_rw(iter) == WRITE ?
575 ORANGEFS_IO_WRITE : ORANGEFS_IO_READ;
576 loff_t *offset = &pos;
577 struct inode *inode = file->f_mapping->host;
578 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
579 struct orangefs_khandle *handle = &orangefs_inode->refn.khandle;
580 size_t count = iov_iter_count(iter);
581 ssize_t total_count = 0;
582 ssize_t ret = -EINVAL;
585 gossip_debug(GOSSIP_FILE_DEBUG,
586 "%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n",
591 if (type == ORANGEFS_IO_WRITE) {
592 gossip_debug(GOSSIP_FILE_DEBUG,
593 "%s(%pU): proceeding with offset : %llu, "
606 while (iov_iter_count(iter)) {
607 size_t each_count = iov_iter_count(iter);
611 /* how much to transfer in this loop iteration */
612 if (each_count > orangefs_bufmap_size_query())
613 each_count = orangefs_bufmap_size_query();
615 gossip_debug(GOSSIP_FILE_DEBUG,
616 "%s(%pU): size of each_count(%d)\n",
620 gossip_debug(GOSSIP_FILE_DEBUG,
621 "%s(%pU): BEFORE wait_for_io: offset is %d\n",
626 ret = wait_for_direct_io(type, inode, offset, iter,
627 each_count, 0, NULL, NULL, file);
628 gossip_debug(GOSSIP_FILE_DEBUG,
629 "%s(%pU): return from wait_for_io:%d\n",
641 gossip_debug(GOSSIP_FILE_DEBUG,
642 "%s(%pU): AFTER wait_for_io: offset is %d\n",
648 * if we got a short I/O operations,
649 * fall out and return what we got so far
651 if (amt_complete < each_count)
659 if (type == ORANGEFS_IO_READ) {
662 file_update_time(file);
663 if (*offset > i_size_read(inode))
664 i_size_write(inode, *offset);
668 gossip_debug(GOSSIP_FILE_DEBUG,
669 "%s(%pU): Value(%d) returned.\n",
677 /** ORANGEFS2 implementation of address space operations */
678 static const struct address_space_operations orangefs_address_operations = {
679 .writepage = orangefs_writepage,
680 .readpage = orangefs_readpage,
681 .writepages = orangefs_writepages,
682 .set_page_dirty = __set_page_dirty_nobuffers,
683 .write_begin = orangefs_write_begin,
684 .write_end = orangefs_write_end,
685 .invalidatepage = orangefs_invalidatepage,
686 .releasepage = orangefs_releasepage,
687 .freepage = orangefs_freepage,
688 .launder_page = orangefs_launder_page,
689 .direct_IO = orangefs_direct_IO,
692 vm_fault_t orangefs_page_mkwrite(struct vm_fault *vmf)
694 struct page *page = vmf->page;
695 struct inode *inode = file_inode(vmf->vma->vm_file);
696 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
697 unsigned long *bitlock = &orangefs_inode->bitlock;
699 struct orangefs_write_range *wr;
701 sb_start_pagefault(inode->i_sb);
703 if (wait_on_bit(bitlock, 1, TASK_KILLABLE)) {
704 ret = VM_FAULT_RETRY;
709 if (PageDirty(page) && !PagePrivate(page)) {
711 * Should be impossible. If it happens, launder the page
712 * since we don't know what's dirty. This will WARN in
713 * orangefs_writepage_locked.
715 if (orangefs_launder_page(page)) {
716 ret = VM_FAULT_LOCKED|VM_FAULT_RETRY;
720 if (PagePrivate(page)) {
721 wr = (struct orangefs_write_range *)page_private(page);
722 if (uid_eq(wr->uid, current_fsuid()) &&
723 gid_eq(wr->gid, current_fsgid())) {
724 wr->pos = page_offset(page);
728 if (orangefs_launder_page(page)) {
729 ret = VM_FAULT_LOCKED|VM_FAULT_RETRY;
734 wr = kmalloc(sizeof *wr, GFP_KERNEL);
736 ret = VM_FAULT_LOCKED|VM_FAULT_RETRY;
739 wr->pos = page_offset(page);
741 wr->uid = current_fsuid();
742 wr->gid = current_fsgid();
743 SetPagePrivate(page);
744 set_page_private(page, (unsigned long)wr);
748 file_update_time(vmf->vma->vm_file);
749 if (page->mapping != inode->i_mapping) {
751 ret = VM_FAULT_LOCKED|VM_FAULT_NOPAGE;
756 * We mark the page dirty already here so that when freeze is in
757 * progress, we are guaranteed that writeback during freezing will
758 * see the dirty page and writeprotect it again.
760 set_page_dirty(page);
761 wait_for_stable_page(page);
762 ret = VM_FAULT_LOCKED;
764 sb_end_pagefault(inode->i_sb);
768 static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr)
770 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
771 struct orangefs_kernel_op_s *new_op;
775 gossip_debug(GOSSIP_INODE_DEBUG,
776 "%s: %pU: Handle is %pU | fs_id %d | size is %llu\n",
778 get_khandle_from_ino(inode),
779 &orangefs_inode->refn.khandle,
780 orangefs_inode->refn.fs_id,
783 /* Ensure that we have a up to date size, so we know if it changed. */
784 ret = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_SIZE);
788 gossip_err("%s: orangefs_inode_getattr failed, ret:%d:.\n",
792 orig_size = i_size_read(inode);
794 /* This is truncate_setsize in a different order. */
795 truncate_pagecache(inode, iattr->ia_size);
796 i_size_write(inode, iattr->ia_size);
797 if (iattr->ia_size > orig_size)
798 pagecache_isize_extended(inode, orig_size, iattr->ia_size);
800 new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE);
804 new_op->upcall.req.truncate.refn = orangefs_inode->refn;
805 new_op->upcall.req.truncate.size = (__s64) iattr->ia_size;
807 ret = service_operation(new_op,
809 get_interruptible_flag(inode));
812 * the truncate has no downcall members to retrieve, but
813 * the status value tells us if it went through ok or not
815 gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret);
822 if (orig_size != i_size_read(inode))
823 iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME;
828 int __orangefs_setattr(struct inode *inode, struct iattr *iattr)
832 if (iattr->ia_valid & ATTR_MODE) {
833 if (iattr->ia_mode & (S_ISVTX)) {
834 if (is_root_handle(inode)) {
836 * allow sticky bit to be set on root (since
837 * it shows up that way by default anyhow),
838 * but don't show it to the server
840 iattr->ia_mode -= S_ISVTX;
842 gossip_debug(GOSSIP_UTILS_DEBUG,
843 "User attempted to set sticky bit on non-root directory; returning EINVAL.\n");
848 if (iattr->ia_mode & (S_ISUID)) {
849 gossip_debug(GOSSIP_UTILS_DEBUG,
850 "Attempting to set setuid bit (not supported); returning EINVAL.\n");
856 if (iattr->ia_valid & ATTR_SIZE) {
857 ret = orangefs_setattr_size(inode, iattr);
863 spin_lock(&inode->i_lock);
864 if (ORANGEFS_I(inode)->attr_valid) {
865 if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) &&
866 gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) {
867 ORANGEFS_I(inode)->attr_valid = iattr->ia_valid;
869 spin_unlock(&inode->i_lock);
870 write_inode_now(inode, 1);
874 ORANGEFS_I(inode)->attr_valid = iattr->ia_valid;
875 ORANGEFS_I(inode)->attr_uid = current_fsuid();
876 ORANGEFS_I(inode)->attr_gid = current_fsgid();
878 setattr_copy(inode, iattr);
879 spin_unlock(&inode->i_lock);
880 mark_inode_dirty(inode);
882 if (iattr->ia_valid & ATTR_MODE)
883 /* change mod on a file that has ACLs */
884 ret = posix_acl_chmod(inode, inode->i_mode);
892 * Change attributes of an object referenced by dentry.
894 int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
897 gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n",
899 ret = setattr_prepare(dentry, iattr);
902 ret = __orangefs_setattr(d_inode(dentry), iattr);
903 sync_inode_metadata(d_inode(dentry), 1);
905 gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n",
911 * Obtain attributes of an object given a dentry
913 int orangefs_getattr(const struct path *path, struct kstat *stat,
914 u32 request_mask, unsigned int flags)
917 struct inode *inode = path->dentry->d_inode;
919 gossip_debug(GOSSIP_INODE_DEBUG,
920 "orangefs_getattr: called on %pd mask %u\n",
921 path->dentry, request_mask);
923 ret = orangefs_inode_getattr(inode,
924 request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0);
926 generic_fillattr(inode, stat);
928 /* override block size reported to stat */
929 if (!(request_mask & STATX_SIZE))
930 stat->result_mask &= ~STATX_SIZE;
932 stat->attributes_mask = STATX_ATTR_IMMUTABLE |
934 if (inode->i_flags & S_IMMUTABLE)
935 stat->attributes |= STATX_ATTR_IMMUTABLE;
936 if (inode->i_flags & S_APPEND)
937 stat->attributes |= STATX_ATTR_APPEND;
942 int orangefs_permission(struct inode *inode, int mask)
946 if (mask & MAY_NOT_BLOCK)
949 gossip_debug(GOSSIP_INODE_DEBUG, "%s: refreshing\n", __func__);
951 /* Make sure the permission (and other common attrs) are up to date. */
952 ret = orangefs_inode_getattr(inode, 0);
956 return generic_permission(inode, mask);
959 int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags)
962 gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n",
963 get_khandle_from_ino(inode));
964 generic_update_time(inode, time, flags);
965 memset(&iattr, 0, sizeof iattr);
967 iattr.ia_valid |= ATTR_ATIME;
969 iattr.ia_valid |= ATTR_CTIME;
971 iattr.ia_valid |= ATTR_MTIME;
972 return __orangefs_setattr(inode, &iattr);
975 /* ORANGEFS2 implementation of VFS inode operations for files */
976 static const struct inode_operations orangefs_file_inode_operations = {
977 .get_acl = orangefs_get_acl,
978 .set_acl = orangefs_set_acl,
979 .setattr = orangefs_setattr,
980 .getattr = orangefs_getattr,
981 .listxattr = orangefs_listxattr,
982 .permission = orangefs_permission,
983 .update_time = orangefs_update_time,
986 static int orangefs_init_iops(struct inode *inode)
988 inode->i_mapping->a_ops = &orangefs_address_operations;
990 switch (inode->i_mode & S_IFMT) {
992 inode->i_op = &orangefs_file_inode_operations;
993 inode->i_fop = &orangefs_file_operations;
996 inode->i_op = &orangefs_symlink_inode_operations;
999 inode->i_op = &orangefs_dir_inode_operations;
1000 inode->i_fop = &orangefs_dir_operations;
1003 gossip_debug(GOSSIP_INODE_DEBUG,
1004 "%s: unsupported mode\n",
1013 * Given an ORANGEFS object identifier (fsid, handle), convert it into
1014 * a ino_t type that will be used as a hash-index from where the handle will
1015 * be searched for in the VFS hash table of inodes.
1017 static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref)
1021 return orangefs_khandle_to_ino(&(ref->khandle));
1025 * Called to set up an inode from iget5_locked.
1027 static int orangefs_set_inode(struct inode *inode, void *data)
1029 struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data;
1030 ORANGEFS_I(inode)->refn.fs_id = ref->fs_id;
1031 ORANGEFS_I(inode)->refn.khandle = ref->khandle;
1032 ORANGEFS_I(inode)->attr_valid = 0;
1033 hash_init(ORANGEFS_I(inode)->xattr_cache);
1034 ORANGEFS_I(inode)->mapping_time = jiffies - 1;
1035 ORANGEFS_I(inode)->bitlock = 0;
1040 * Called to determine if handles match.
1042 static int orangefs_test_inode(struct inode *inode, void *data)
1044 struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data;
1045 struct orangefs_inode_s *orangefs_inode = NULL;
1047 orangefs_inode = ORANGEFS_I(inode);
1048 /* test handles and fs_ids... */
1049 return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle),
1051 orangefs_inode->refn.fs_id == ref->fs_id);
1055 * Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS
1058 * @sb: the file system super block instance.
1059 * @ref: The ORANGEFS object for which we are trying to locate an inode.
1061 struct inode *orangefs_iget(struct super_block *sb,
1062 struct orangefs_object_kref *ref)
1064 struct inode *inode = NULL;
1068 hash = orangefs_handle_hash(ref);
1069 inode = iget5_locked(sb,
1071 orangefs_test_inode,
1076 return ERR_PTR(-ENOMEM);
1078 if (!(inode->i_state & I_NEW))
1081 error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW);
1084 return ERR_PTR(error);
1087 inode->i_ino = hash; /* needed for stat etc */
1088 orangefs_init_iops(inode);
1089 unlock_new_inode(inode);
1091 gossip_debug(GOSSIP_INODE_DEBUG,
1092 "iget handle %pU, fsid %d hash %ld i_ino %lu\n",
1102 * Allocate an inode for a newly created file and insert it into the inode hash.
1104 struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir,
1105 int mode, dev_t dev, struct orangefs_object_kref *ref)
1107 unsigned long hash = orangefs_handle_hash(ref);
1108 struct inode *inode;
1111 gossip_debug(GOSSIP_INODE_DEBUG,
1112 "%s:(sb is %p | MAJOR(dev)=%u | MINOR(dev)=%u mode=%o)\n",
1119 inode = new_inode(sb);
1121 return ERR_PTR(-ENOMEM);
1123 orangefs_set_inode(inode, ref);
1124 inode->i_ino = hash; /* needed for stat etc */
1126 error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW);
1130 orangefs_init_iops(inode);
1131 inode->i_rdev = dev;
1133 error = insert_inode_locked4(inode, hash, orangefs_test_inode, ref);
1137 gossip_debug(GOSSIP_INODE_DEBUG,
1138 "Initializing ACL's for inode %pU\n",
1139 get_khandle_from_ino(inode));
1140 orangefs_init_acl(inode, dir);
1145 return ERR_PTR(error);