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>
14 #include <linux/fileattr.h>
16 #include "orangefs-kernel.h"
17 #include "orangefs-bufmap.h"
19 static int orangefs_writepage_locked(struct page *page,
20 struct writeback_control *wbc)
22 struct inode *inode = page->mapping->host;
23 struct orangefs_write_range *wr = NULL;
30 set_page_writeback(page);
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);
37 if (off + wr->len > len)
43 off = page_offset(page);
44 if (off + PAGE_SIZE > len)
49 /* Should've been handled in orangefs_invalidatepage. */
50 WARN_ON(off == len || off + wlen > len);
54 bv.bv_offset = off % PAGE_SIZE;
56 iov_iter_bvec(&iter, WRITE, &bv, 1, wlen);
58 ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, wlen,
62 mapping_set_error(page->mapping, ret);
66 kfree(detach_page_private(page));
70 static int orangefs_writepage(struct page *page, struct writeback_control *wbc)
73 ret = orangefs_writepage_locked(page, wbc);
75 end_page_writeback(page);
79 struct orangefs_writepages {
90 static int orangefs_writepages_work(struct orangefs_writepages *ow,
91 struct writeback_control *wbc)
93 struct inode *inode = ow->pages[0]->mapping->host;
94 struct orangefs_write_range *wrp, wr;
101 len = i_size_read(inode);
103 for (i = 0; i < ow->npages; i++) {
104 set_page_writeback(ow->pages[i]);
105 ow->bv[i].bv_page = ow->pages[i];
106 ow->bv[i].bv_len = min(page_offset(ow->pages[i]) + PAGE_SIZE,
108 max(ow->off, page_offset(ow->pages[i]));
110 ow->bv[i].bv_offset = ow->off -
111 page_offset(ow->pages[i]);
113 ow->bv[i].bv_offset = 0;
115 iov_iter_bvec(&iter, WRITE, ow->bv, ow->npages, ow->len);
117 WARN_ON(ow->off >= len);
118 if (ow->off + ow->len > len)
119 ow->len = len - ow->off;
124 ret = wait_for_direct_io(ORANGEFS_IO_WRITE, inode, &off, &iter, ow->len,
127 for (i = 0; i < ow->npages; i++) {
128 SetPageError(ow->pages[i]);
129 mapping_set_error(ow->pages[i]->mapping, ret);
130 if (PagePrivate(ow->pages[i])) {
131 wrp = (struct orangefs_write_range *)
132 page_private(ow->pages[i]);
133 ClearPagePrivate(ow->pages[i]);
134 put_page(ow->pages[i]);
137 end_page_writeback(ow->pages[i]);
138 unlock_page(ow->pages[i]);
142 for (i = 0; i < ow->npages; i++) {
143 if (PagePrivate(ow->pages[i])) {
144 wrp = (struct orangefs_write_range *)
145 page_private(ow->pages[i]);
146 ClearPagePrivate(ow->pages[i]);
147 put_page(ow->pages[i]);
150 end_page_writeback(ow->pages[i]);
151 unlock_page(ow->pages[i]);
157 static int orangefs_writepages_callback(struct page *page,
158 struct writeback_control *wbc, void *data)
160 struct orangefs_writepages *ow = data;
161 struct orangefs_write_range *wr;
164 if (!PagePrivate(page)) {
166 /* It's not private so there's nothing to write, right? */
167 printk("writepages_callback not private!\n");
171 wr = (struct orangefs_write_range *)page_private(page);
174 if (ow->npages == 0) {
179 ow->pages[ow->npages++] = page;
183 if (!uid_eq(ow->uid, wr->uid) || !gid_eq(ow->gid, wr->gid)) {
184 orangefs_writepages_work(ow, wbc);
189 if (ow->off + ow->len == wr->pos) {
191 ow->pages[ow->npages++] = page;
198 orangefs_writepages_work(ow, wbc);
201 ret = orangefs_writepage_locked(page, wbc);
202 mapping_set_error(page->mapping, ret);
204 end_page_writeback(page);
206 if (ow->npages == ow->maxpages) {
207 orangefs_writepages_work(ow, wbc);
214 static int orangefs_writepages(struct address_space *mapping,
215 struct writeback_control *wbc)
217 struct orangefs_writepages *ow;
218 struct blk_plug plug;
220 ow = kzalloc(sizeof(struct orangefs_writepages), GFP_KERNEL);
223 ow->maxpages = orangefs_bufmap_size_query()/PAGE_SIZE;
224 ow->pages = kcalloc(ow->maxpages, sizeof(struct page *), GFP_KERNEL);
229 ow->bv = kcalloc(ow->maxpages, sizeof(struct bio_vec), GFP_KERNEL);
235 blk_start_plug(&plug);
236 ret = write_cache_pages(mapping, wbc, orangefs_writepages_callback, ow);
238 ret = orangefs_writepages_work(ow, wbc);
239 blk_finish_plug(&plug);
246 static int orangefs_launder_page(struct page *);
248 static void orangefs_readahead(struct readahead_control *rac)
251 struct iov_iter iter;
252 struct inode *inode = rac->mapping->host;
253 struct xarray *i_pages;
255 loff_t new_start = readahead_pos(rac);
259 loff_t bytes_remaining = inode->i_size - readahead_pos(rac);
260 loff_t pages_remaining = bytes_remaining / PAGE_SIZE;
262 if (pages_remaining >= 1024)
264 else if (pages_remaining > readahead_count(rac))
265 new_len = bytes_remaining;
268 readahead_expand(rac, new_start, new_len);
270 offset = readahead_pos(rac);
271 i_pages = &rac->mapping->i_pages;
273 iov_iter_xarray(&iter, READ, i_pages, offset, readahead_length(rac));
275 /* read in the pages. */
276 if ((ret = wait_for_direct_io(ORANGEFS_IO_READ, inode,
277 &offset, &iter, readahead_length(rac),
278 inode->i_size, NULL, NULL, rac->file)) < 0)
279 gossip_debug(GOSSIP_FILE_DEBUG,
280 "%s: wait_for_direct_io failed. \n", __func__);
285 while ((page = readahead_page(rac))) {
286 page_endio(page, false, ret);
291 static int orangefs_readpage(struct file *file, struct page *page)
293 struct inode *inode = page->mapping->host;
294 struct iov_iter iter;
297 loff_t off; /* offset into this page */
300 orangefs_launder_page(page);
302 off = page_offset(page);
304 bv.bv_len = PAGE_SIZE;
306 iov_iter_bvec(&iter, READ, &bv, 1, PAGE_SIZE);
308 ret = wait_for_direct_io(ORANGEFS_IO_READ, inode, &off, &iter,
309 PAGE_SIZE, inode->i_size, NULL, NULL, file);
310 /* this will only zero remaining unread portions of the page data */
311 iov_iter_zero(~0U, &iter);
312 /* takes care of potential aliasing */
313 flush_dcache_page(page);
317 SetPageUptodate(page);
319 ClearPageError(page);
322 /* unlock the page after the ->readpage() routine completes */
327 static int orangefs_write_begin(struct file *file,
328 struct address_space *mapping,
329 loff_t pos, unsigned len, unsigned flags, struct page **pagep,
332 struct orangefs_write_range *wr;
337 index = pos >> PAGE_SHIFT;
339 page = grab_cache_page_write_begin(mapping, index, flags);
345 if (PageDirty(page) && !PagePrivate(page)) {
347 * Should be impossible. If it happens, launder the page
348 * since we don't know what's dirty. This will WARN in
349 * orangefs_writepage_locked.
351 ret = orangefs_launder_page(page);
355 if (PagePrivate(page)) {
356 struct orangefs_write_range *wr;
357 wr = (struct orangefs_write_range *)page_private(page);
358 if (wr->pos + wr->len == pos &&
359 uid_eq(wr->uid, current_fsuid()) &&
360 gid_eq(wr->gid, current_fsgid())) {
364 ret = orangefs_launder_page(page);
370 wr = kmalloc(sizeof *wr, GFP_KERNEL);
376 wr->uid = current_fsuid();
377 wr->gid = current_fsgid();
378 attach_page_private(page, wr);
383 static int orangefs_write_end(struct file *file, struct address_space *mapping,
384 loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata)
386 struct inode *inode = page->mapping->host;
387 loff_t last_pos = pos + copied;
390 * No need to use i_size_read() here, the i_size
391 * cannot change under us because we hold the i_mutex.
393 if (last_pos > inode->i_size)
394 i_size_write(inode, last_pos);
396 /* zero the stale part of the page if we did a short copy */
397 if (!PageUptodate(page)) {
398 unsigned from = pos & (PAGE_SIZE - 1);
400 zero_user(page, from + copied, len - copied);
402 /* Set fully written pages uptodate. */
403 if (pos == page_offset(page) &&
404 (len == PAGE_SIZE || pos + len == inode->i_size)) {
405 zero_user_segment(page, from + copied, PAGE_SIZE);
406 SetPageUptodate(page);
410 set_page_dirty(page);
414 mark_inode_dirty_sync(file_inode(file));
418 static void orangefs_invalidatepage(struct page *page,
422 struct orangefs_write_range *wr;
423 wr = (struct orangefs_write_range *)page_private(page);
425 if (offset == 0 && length == PAGE_SIZE) {
426 kfree(detach_page_private(page));
428 /* write range entirely within invalidate range (or equal) */
429 } else if (page_offset(page) + offset <= wr->pos &&
430 wr->pos + wr->len <= page_offset(page) + offset + length) {
431 kfree(detach_page_private(page));
432 /* XXX is this right? only caller in fs */
433 cancel_dirty_page(page);
435 /* invalidate range chops off end of write range */
436 } else if (wr->pos < page_offset(page) + offset &&
437 wr->pos + wr->len <= page_offset(page) + offset + length &&
438 page_offset(page) + offset < wr->pos + wr->len) {
440 x = wr->pos + wr->len - (page_offset(page) + offset);
441 WARN_ON(x > wr->len);
443 wr->uid = current_fsuid();
444 wr->gid = current_fsgid();
445 /* invalidate range chops off beginning of write range */
446 } else if (page_offset(page) + offset <= wr->pos &&
447 page_offset(page) + offset + length < wr->pos + wr->len &&
448 wr->pos < page_offset(page) + offset + length) {
450 x = page_offset(page) + offset + length - wr->pos;
451 WARN_ON(x > wr->len);
454 wr->uid = current_fsuid();
455 wr->gid = current_fsgid();
456 /* invalidate range entirely within write range (punch hole) */
457 } else if (wr->pos < page_offset(page) + offset &&
458 page_offset(page) + offset + length < wr->pos + wr->len) {
459 /* XXX what do we do here... should not WARN_ON */
463 * should we just ignore this and write it out anyway?
464 * it hardly makes sense
467 /* non-overlapping ranges */
469 /* WARN if they do overlap */
470 if (!((page_offset(page) + offset + length <= wr->pos) ^
471 (wr->pos + wr->len <= page_offset(page) + offset))) {
473 printk("invalidate range offset %llu length %u\n",
474 page_offset(page) + offset, length);
475 printk("write range offset %llu length %zu\n",
482 * Above there are returns where wr is freed or where we WARN.
483 * Thus the following runs if wr was modified above.
486 orangefs_launder_page(page);
489 static int orangefs_releasepage(struct page *page, gfp_t foo)
491 return !PagePrivate(page);
494 static void orangefs_freepage(struct page *page)
496 kfree(detach_page_private(page));
499 static int orangefs_launder_page(struct page *page)
502 struct writeback_control wbc = {
503 .sync_mode = WB_SYNC_ALL,
506 wait_on_page_writeback(page);
507 if (clear_page_dirty_for_io(page)) {
508 r = orangefs_writepage_locked(page, &wbc);
509 end_page_writeback(page);
514 static ssize_t orangefs_direct_IO(struct kiocb *iocb,
515 struct iov_iter *iter)
518 * Comment from original do_readv_writev:
519 * Common entry point for read/write/readv/writev
520 * This function will dispatch it to either the direct I/O
521 * or buffered I/O path depending on the mount options and/or
522 * augmented/extended metadata attached to the file.
523 * Note: File extended attributes override any mount options.
525 struct file *file = iocb->ki_filp;
526 loff_t pos = iocb->ki_pos;
527 enum ORANGEFS_io_type type = iov_iter_rw(iter) == WRITE ?
528 ORANGEFS_IO_WRITE : ORANGEFS_IO_READ;
529 loff_t *offset = &pos;
530 struct inode *inode = file->f_mapping->host;
531 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
532 struct orangefs_khandle *handle = &orangefs_inode->refn.khandle;
533 size_t count = iov_iter_count(iter);
534 ssize_t total_count = 0;
535 ssize_t ret = -EINVAL;
538 gossip_debug(GOSSIP_FILE_DEBUG,
539 "%s-BEGIN(%pU): count(%d) after estimate_max_iovecs.\n",
544 if (type == ORANGEFS_IO_WRITE) {
545 gossip_debug(GOSSIP_FILE_DEBUG,
546 "%s(%pU): proceeding with offset : %llu, "
559 while (iov_iter_count(iter)) {
560 size_t each_count = iov_iter_count(iter);
564 /* how much to transfer in this loop iteration */
565 if (each_count > orangefs_bufmap_size_query())
566 each_count = orangefs_bufmap_size_query();
568 gossip_debug(GOSSIP_FILE_DEBUG,
569 "%s(%pU): size of each_count(%d)\n",
573 gossip_debug(GOSSIP_FILE_DEBUG,
574 "%s(%pU): BEFORE wait_for_io: offset is %d\n",
579 ret = wait_for_direct_io(type, inode, offset, iter,
580 each_count, 0, NULL, NULL, file);
581 gossip_debug(GOSSIP_FILE_DEBUG,
582 "%s(%pU): return from wait_for_io:%d\n",
594 gossip_debug(GOSSIP_FILE_DEBUG,
595 "%s(%pU): AFTER wait_for_io: offset is %d\n",
601 * if we got a short I/O operations,
602 * fall out and return what we got so far
604 if (amt_complete < each_count)
612 if (type == ORANGEFS_IO_READ) {
615 file_update_time(file);
616 if (*offset > i_size_read(inode))
617 i_size_write(inode, *offset);
621 gossip_debug(GOSSIP_FILE_DEBUG,
622 "%s(%pU): Value(%d) returned.\n",
630 /** ORANGEFS2 implementation of address space operations */
631 static const struct address_space_operations orangefs_address_operations = {
632 .writepage = orangefs_writepage,
633 .readahead = orangefs_readahead,
634 .readpage = orangefs_readpage,
635 .writepages = orangefs_writepages,
636 .set_page_dirty = __set_page_dirty_nobuffers,
637 .write_begin = orangefs_write_begin,
638 .write_end = orangefs_write_end,
639 .invalidatepage = orangefs_invalidatepage,
640 .releasepage = orangefs_releasepage,
641 .freepage = orangefs_freepage,
642 .launder_page = orangefs_launder_page,
643 .direct_IO = orangefs_direct_IO,
646 vm_fault_t orangefs_page_mkwrite(struct vm_fault *vmf)
648 struct page *page = vmf->page;
649 struct inode *inode = file_inode(vmf->vma->vm_file);
650 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
651 unsigned long *bitlock = &orangefs_inode->bitlock;
653 struct orangefs_write_range *wr;
655 sb_start_pagefault(inode->i_sb);
657 if (wait_on_bit(bitlock, 1, TASK_KILLABLE)) {
658 ret = VM_FAULT_RETRY;
663 if (PageDirty(page) && !PagePrivate(page)) {
665 * Should be impossible. If it happens, launder the page
666 * since we don't know what's dirty. This will WARN in
667 * orangefs_writepage_locked.
669 if (orangefs_launder_page(page)) {
670 ret = VM_FAULT_LOCKED|VM_FAULT_RETRY;
674 if (PagePrivate(page)) {
675 wr = (struct orangefs_write_range *)page_private(page);
676 if (uid_eq(wr->uid, current_fsuid()) &&
677 gid_eq(wr->gid, current_fsgid())) {
678 wr->pos = page_offset(page);
682 if (orangefs_launder_page(page)) {
683 ret = VM_FAULT_LOCKED|VM_FAULT_RETRY;
688 wr = kmalloc(sizeof *wr, GFP_KERNEL);
690 ret = VM_FAULT_LOCKED|VM_FAULT_RETRY;
693 wr->pos = page_offset(page);
695 wr->uid = current_fsuid();
696 wr->gid = current_fsgid();
697 attach_page_private(page, wr);
700 file_update_time(vmf->vma->vm_file);
701 if (page->mapping != inode->i_mapping) {
703 ret = VM_FAULT_LOCKED|VM_FAULT_NOPAGE;
708 * We mark the page dirty already here so that when freeze is in
709 * progress, we are guaranteed that writeback during freezing will
710 * see the dirty page and writeprotect it again.
712 set_page_dirty(page);
713 wait_for_stable_page(page);
714 ret = VM_FAULT_LOCKED;
716 sb_end_pagefault(inode->i_sb);
720 static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr)
722 struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
723 struct orangefs_kernel_op_s *new_op;
727 gossip_debug(GOSSIP_INODE_DEBUG,
728 "%s: %pU: Handle is %pU | fs_id %d | size is %llu\n",
730 get_khandle_from_ino(inode),
731 &orangefs_inode->refn.khandle,
732 orangefs_inode->refn.fs_id,
735 /* Ensure that we have a up to date size, so we know if it changed. */
736 ret = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_SIZE);
740 gossip_err("%s: orangefs_inode_getattr failed, ret:%d:.\n",
744 orig_size = i_size_read(inode);
746 /* This is truncate_setsize in a different order. */
747 truncate_pagecache(inode, iattr->ia_size);
748 i_size_write(inode, iattr->ia_size);
749 if (iattr->ia_size > orig_size)
750 pagecache_isize_extended(inode, orig_size, iattr->ia_size);
752 new_op = op_alloc(ORANGEFS_VFS_OP_TRUNCATE);
756 new_op->upcall.req.truncate.refn = orangefs_inode->refn;
757 new_op->upcall.req.truncate.size = (__s64) iattr->ia_size;
759 ret = service_operation(new_op,
761 get_interruptible_flag(inode));
764 * the truncate has no downcall members to retrieve, but
765 * the status value tells us if it went through ok or not
767 gossip_debug(GOSSIP_INODE_DEBUG, "%s: ret:%d:\n", __func__, ret);
774 if (orig_size != i_size_read(inode))
775 iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME;
780 int __orangefs_setattr(struct inode *inode, struct iattr *iattr)
784 if (iattr->ia_valid & ATTR_MODE) {
785 if (iattr->ia_mode & (S_ISVTX)) {
786 if (is_root_handle(inode)) {
788 * allow sticky bit to be set on root (since
789 * it shows up that way by default anyhow),
790 * but don't show it to the server
792 iattr->ia_mode -= S_ISVTX;
794 gossip_debug(GOSSIP_UTILS_DEBUG,
795 "User attempted to set sticky bit on non-root directory; returning EINVAL.\n");
800 if (iattr->ia_mode & (S_ISUID)) {
801 gossip_debug(GOSSIP_UTILS_DEBUG,
802 "Attempting to set setuid bit (not supported); returning EINVAL.\n");
808 if (iattr->ia_valid & ATTR_SIZE) {
809 ret = orangefs_setattr_size(inode, iattr);
815 spin_lock(&inode->i_lock);
816 if (ORANGEFS_I(inode)->attr_valid) {
817 if (uid_eq(ORANGEFS_I(inode)->attr_uid, current_fsuid()) &&
818 gid_eq(ORANGEFS_I(inode)->attr_gid, current_fsgid())) {
819 ORANGEFS_I(inode)->attr_valid = iattr->ia_valid;
821 spin_unlock(&inode->i_lock);
822 write_inode_now(inode, 1);
826 ORANGEFS_I(inode)->attr_valid = iattr->ia_valid;
827 ORANGEFS_I(inode)->attr_uid = current_fsuid();
828 ORANGEFS_I(inode)->attr_gid = current_fsgid();
830 setattr_copy(&init_user_ns, inode, iattr);
831 spin_unlock(&inode->i_lock);
832 mark_inode_dirty(inode);
834 if (iattr->ia_valid & ATTR_MODE)
835 /* change mod on a file that has ACLs */
836 ret = posix_acl_chmod(&init_user_ns, inode, inode->i_mode);
844 * Change attributes of an object referenced by dentry.
846 int orangefs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
850 gossip_debug(GOSSIP_INODE_DEBUG, "__orangefs_setattr: called on %pd\n",
852 ret = setattr_prepare(&init_user_ns, dentry, iattr);
855 ret = __orangefs_setattr(d_inode(dentry), iattr);
856 sync_inode_metadata(d_inode(dentry), 1);
858 gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_setattr: returning %d\n",
864 * Obtain attributes of an object given a dentry
866 int orangefs_getattr(struct user_namespace *mnt_userns, const struct path *path,
867 struct kstat *stat, u32 request_mask, unsigned int flags)
870 struct inode *inode = path->dentry->d_inode;
872 gossip_debug(GOSSIP_INODE_DEBUG,
873 "orangefs_getattr: called on %pd mask %u\n",
874 path->dentry, request_mask);
876 ret = orangefs_inode_getattr(inode,
877 request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0);
879 generic_fillattr(&init_user_ns, inode, stat);
881 /* override block size reported to stat */
882 if (!(request_mask & STATX_SIZE))
883 stat->result_mask &= ~STATX_SIZE;
885 generic_fill_statx_attr(inode, stat);
890 int orangefs_permission(struct user_namespace *mnt_userns,
891 struct inode *inode, int mask)
895 if (mask & MAY_NOT_BLOCK)
898 gossip_debug(GOSSIP_INODE_DEBUG, "%s: refreshing\n", __func__);
900 /* Make sure the permission (and other common attrs) are up to date. */
901 ret = orangefs_inode_getattr(inode, 0);
905 return generic_permission(&init_user_ns, inode, mask);
908 int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags)
911 gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n",
912 get_khandle_from_ino(inode));
913 generic_update_time(inode, time, flags);
914 memset(&iattr, 0, sizeof iattr);
916 iattr.ia_valid |= ATTR_ATIME;
918 iattr.ia_valid |= ATTR_CTIME;
920 iattr.ia_valid |= ATTR_MTIME;
921 return __orangefs_setattr(inode, &iattr);
924 static int orangefs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
929 gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__,
932 ret = orangefs_inode_getxattr(d_inode(dentry),
933 "user.pvfs2.meta_hint",
935 if (ret < 0 && ret != -ENODATA)
938 gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val);
940 fileattr_fill_flags(fa, val);
944 static int orangefs_fileattr_set(struct user_namespace *mnt_userns,
945 struct dentry *dentry, struct fileattr *fa)
949 gossip_debug(GOSSIP_FILE_DEBUG, "%s: called on %pd\n", __func__,
952 * ORANGEFS_MIRROR_FL is set internally when the mirroring mode is
953 * turned on for a file. The user is not allowed to turn on this bit,
954 * but the bit is present if the user first gets the flags and then
955 * updates the flags with some new settings. So, we ignore it in the
956 * following edit. bligon.
958 if (fileattr_has_fsx(fa) ||
959 (fa->flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | FS_NOATIME_FL | ORANGEFS_MIRROR_FL))) {
960 gossip_err("%s: only supports setting one of FS_IMMUTABLE_FL|FS_APPEND_FL|FS_NOATIME_FL\n",
965 gossip_debug(GOSSIP_FILE_DEBUG, "%s: flags=%u\n", __func__, (u32) val);
966 return orangefs_inode_setxattr(d_inode(dentry),
967 "user.pvfs2.meta_hint",
968 &val, sizeof(val), 0);
971 /* ORANGEFS2 implementation of VFS inode operations for files */
972 static const struct inode_operations orangefs_file_inode_operations = {
973 .get_acl = orangefs_get_acl,
974 .set_acl = orangefs_set_acl,
975 .setattr = orangefs_setattr,
976 .getattr = orangefs_getattr,
977 .listxattr = orangefs_listxattr,
978 .permission = orangefs_permission,
979 .update_time = orangefs_update_time,
980 .fileattr_get = orangefs_fileattr_get,
981 .fileattr_set = orangefs_fileattr_set,
984 static int orangefs_init_iops(struct inode *inode)
986 inode->i_mapping->a_ops = &orangefs_address_operations;
988 switch (inode->i_mode & S_IFMT) {
990 inode->i_op = &orangefs_file_inode_operations;
991 inode->i_fop = &orangefs_file_operations;
994 inode->i_op = &orangefs_symlink_inode_operations;
997 inode->i_op = &orangefs_dir_inode_operations;
998 inode->i_fop = &orangefs_dir_operations;
1001 gossip_debug(GOSSIP_INODE_DEBUG,
1002 "%s: unsupported mode\n",
1011 * Given an ORANGEFS object identifier (fsid, handle), convert it into
1012 * a ino_t type that will be used as a hash-index from where the handle will
1013 * be searched for in the VFS hash table of inodes.
1015 static inline ino_t orangefs_handle_hash(struct orangefs_object_kref *ref)
1019 return orangefs_khandle_to_ino(&(ref->khandle));
1023 * Called to set up an inode from iget5_locked.
1025 static int orangefs_set_inode(struct inode *inode, void *data)
1027 struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data;
1028 ORANGEFS_I(inode)->refn.fs_id = ref->fs_id;
1029 ORANGEFS_I(inode)->refn.khandle = ref->khandle;
1030 ORANGEFS_I(inode)->attr_valid = 0;
1031 hash_init(ORANGEFS_I(inode)->xattr_cache);
1032 ORANGEFS_I(inode)->mapping_time = jiffies - 1;
1033 ORANGEFS_I(inode)->bitlock = 0;
1038 * Called to determine if handles match.
1040 static int orangefs_test_inode(struct inode *inode, void *data)
1042 struct orangefs_object_kref *ref = (struct orangefs_object_kref *) data;
1043 struct orangefs_inode_s *orangefs_inode = NULL;
1045 orangefs_inode = ORANGEFS_I(inode);
1046 /* test handles and fs_ids... */
1047 return (!ORANGEFS_khandle_cmp(&(orangefs_inode->refn.khandle),
1049 orangefs_inode->refn.fs_id == ref->fs_id);
1053 * Front-end to lookup the inode-cache maintained by the VFS using the ORANGEFS
1056 * @sb: the file system super block instance.
1057 * @ref: The ORANGEFS object for which we are trying to locate an inode.
1059 struct inode *orangefs_iget(struct super_block *sb,
1060 struct orangefs_object_kref *ref)
1062 struct inode *inode = NULL;
1066 hash = orangefs_handle_hash(ref);
1067 inode = iget5_locked(sb,
1069 orangefs_test_inode,
1074 return ERR_PTR(-ENOMEM);
1076 if (!(inode->i_state & I_NEW))
1079 error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW);
1082 return ERR_PTR(error);
1085 inode->i_ino = hash; /* needed for stat etc */
1086 orangefs_init_iops(inode);
1087 unlock_new_inode(inode);
1089 gossip_debug(GOSSIP_INODE_DEBUG,
1090 "iget handle %pU, fsid %d hash %ld i_ino %lu\n",
1100 * Allocate an inode for a newly created file and insert it into the inode hash.
1102 struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir,
1103 int mode, dev_t dev, struct orangefs_object_kref *ref)
1105 unsigned long hash = orangefs_handle_hash(ref);
1106 struct inode *inode;
1109 gossip_debug(GOSSIP_INODE_DEBUG,
1110 "%s:(sb is %p | MAJOR(dev)=%u | MINOR(dev)=%u mode=%o)\n",
1117 inode = new_inode(sb);
1119 return ERR_PTR(-ENOMEM);
1121 orangefs_set_inode(inode, ref);
1122 inode->i_ino = hash; /* needed for stat etc */
1124 error = orangefs_inode_getattr(inode, ORANGEFS_GETATTR_NEW);
1128 orangefs_init_iops(inode);
1129 inode->i_rdev = dev;
1131 error = insert_inode_locked4(inode, hash, orangefs_test_inode, ref);
1135 gossip_debug(GOSSIP_INODE_DEBUG,
1136 "Initializing ACL's for inode %pU\n",
1137 get_khandle_from_ino(inode));
1138 orangefs_init_acl(inode, dir);
1143 return ERR_PTR(error);