4921 lines
119 KiB
C
4921 lines
119 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* fs/f2fs/file.c
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*/
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#include <linux/fs.h>
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#include <linux/f2fs_fs.h>
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#include <linux/stat.h>
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#include <linux/buffer_head.h>
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#include <linux/writeback.h>
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#include <linux/blkdev.h>
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#include <linux/falloc.h>
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#include <linux/types.h>
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#include <linux/compat.h>
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#include <linux/uaccess.h>
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#include <linux/mount.h>
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#include <linux/pagevec.h>
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#include <linux/uio.h>
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#include <linux/uuid.h>
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#include <linux/file.h>
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#include <linux/nls.h>
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#include <linux/sched/signal.h>
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#include <linux/fileattr.h>
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#include <linux/fadvise.h>
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#include <linux/iomap.h>
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include "xattr.h"
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#include "acl.h"
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#include "gc.h"
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#include "iostat.h"
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#include <trace/events/f2fs.h>
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#include <uapi/linux/f2fs.h>
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static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
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{
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struct inode *inode = file_inode(vmf->vma->vm_file);
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vm_fault_t ret;
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ret = filemap_fault(vmf);
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if (!ret)
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f2fs_update_iostat(F2FS_I_SB(inode), inode,
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APP_MAPPED_READ_IO, F2FS_BLKSIZE);
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trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
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return ret;
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}
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static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
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{
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struct page *page = vmf->page;
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struct inode *inode = file_inode(vmf->vma->vm_file);
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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struct dnode_of_data dn;
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bool need_alloc = true;
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int err = 0;
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if (unlikely(IS_IMMUTABLE(inode)))
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return VM_FAULT_SIGBUS;
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if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
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return VM_FAULT_SIGBUS;
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if (unlikely(f2fs_cp_error(sbi))) {
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err = -EIO;
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goto err;
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}
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if (!f2fs_is_checkpoint_ready(sbi)) {
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err = -ENOSPC;
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goto err;
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}
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err = f2fs_convert_inline_inode(inode);
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if (err)
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goto err;
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#ifdef CONFIG_F2FS_FS_COMPRESSION
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if (f2fs_compressed_file(inode)) {
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int ret = f2fs_is_compressed_cluster(inode, page->index);
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if (ret < 0) {
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err = ret;
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goto err;
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} else if (ret) {
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need_alloc = false;
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}
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}
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#endif
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/* should do out of any locked page */
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if (need_alloc)
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f2fs_balance_fs(sbi, true);
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sb_start_pagefault(inode->i_sb);
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f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
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file_update_time(vmf->vma->vm_file);
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filemap_invalidate_lock_shared(inode->i_mapping);
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lock_page(page);
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if (unlikely(page->mapping != inode->i_mapping ||
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page_offset(page) > i_size_read(inode) ||
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!PageUptodate(page))) {
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unlock_page(page);
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err = -EFAULT;
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goto out_sem;
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}
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if (need_alloc) {
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/* block allocation */
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f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
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set_new_dnode(&dn, inode, NULL, NULL, 0);
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err = f2fs_get_block(&dn, page->index);
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f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
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}
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#ifdef CONFIG_F2FS_FS_COMPRESSION
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if (!need_alloc) {
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set_new_dnode(&dn, inode, NULL, NULL, 0);
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err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
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f2fs_put_dnode(&dn);
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}
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#endif
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if (err) {
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unlock_page(page);
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goto out_sem;
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}
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f2fs_wait_on_page_writeback(page, DATA, false, true);
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/* wait for GCed page writeback via META_MAPPING */
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f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
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/*
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* check to see if the page is mapped already (no holes)
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*/
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if (PageMappedToDisk(page))
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goto out_sem;
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/* page is wholly or partially inside EOF */
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if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
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i_size_read(inode)) {
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loff_t offset;
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offset = i_size_read(inode) & ~PAGE_MASK;
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zero_user_segment(page, offset, PAGE_SIZE);
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}
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set_page_dirty(page);
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if (!PageUptodate(page))
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SetPageUptodate(page);
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f2fs_update_iostat(sbi, inode, APP_MAPPED_IO, F2FS_BLKSIZE);
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f2fs_update_time(sbi, REQ_TIME);
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trace_f2fs_vm_page_mkwrite(page, DATA);
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out_sem:
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filemap_invalidate_unlock_shared(inode->i_mapping);
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sb_end_pagefault(inode->i_sb);
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err:
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return block_page_mkwrite_return(err);
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}
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static const struct vm_operations_struct f2fs_file_vm_ops = {
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.fault = f2fs_filemap_fault,
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.map_pages = filemap_map_pages,
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.page_mkwrite = f2fs_vm_page_mkwrite,
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};
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static int get_parent_ino(struct inode *inode, nid_t *pino)
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{
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struct dentry *dentry;
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/*
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* Make sure to get the non-deleted alias. The alias associated with
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* the open file descriptor being fsync()'ed may be deleted already.
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*/
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dentry = d_find_alias(inode);
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if (!dentry)
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return 0;
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*pino = parent_ino(dentry);
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dput(dentry);
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return 1;
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}
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static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
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{
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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enum cp_reason_type cp_reason = CP_NO_NEEDED;
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if (!S_ISREG(inode->i_mode))
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cp_reason = CP_NON_REGULAR;
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else if (f2fs_compressed_file(inode))
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cp_reason = CP_COMPRESSED;
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else if (inode->i_nlink != 1)
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cp_reason = CP_HARDLINK;
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else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
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cp_reason = CP_SB_NEED_CP;
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else if (file_wrong_pino(inode))
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cp_reason = CP_WRONG_PINO;
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else if (!f2fs_space_for_roll_forward(sbi))
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cp_reason = CP_NO_SPC_ROLL;
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else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
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cp_reason = CP_NODE_NEED_CP;
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else if (test_opt(sbi, FASTBOOT))
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cp_reason = CP_FASTBOOT_MODE;
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else if (F2FS_OPTION(sbi).active_logs == 2)
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cp_reason = CP_SPEC_LOG_NUM;
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else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
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f2fs_need_dentry_mark(sbi, inode->i_ino) &&
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f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
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TRANS_DIR_INO))
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cp_reason = CP_RECOVER_DIR;
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return cp_reason;
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}
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static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
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{
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struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
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bool ret = false;
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/* But we need to avoid that there are some inode updates */
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if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
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ret = true;
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f2fs_put_page(i, 0);
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return ret;
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}
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static void try_to_fix_pino(struct inode *inode)
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{
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struct f2fs_inode_info *fi = F2FS_I(inode);
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nid_t pino;
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f2fs_down_write(&fi->i_sem);
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if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
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get_parent_ino(inode, &pino)) {
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f2fs_i_pino_write(inode, pino);
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file_got_pino(inode);
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}
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f2fs_up_write(&fi->i_sem);
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}
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static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
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int datasync, bool atomic)
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{
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struct inode *inode = file->f_mapping->host;
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struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
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nid_t ino = inode->i_ino;
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int ret = 0;
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enum cp_reason_type cp_reason = 0;
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struct writeback_control wbc = {
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.sync_mode = WB_SYNC_ALL,
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.nr_to_write = LONG_MAX,
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.for_reclaim = 0,
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};
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unsigned int seq_id = 0;
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if (unlikely(f2fs_readonly(inode->i_sb)))
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return 0;
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trace_f2fs_sync_file_enter(inode);
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if (S_ISDIR(inode->i_mode))
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||
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goto go_write;
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|
/* if fdatasync is triggered, let's do in-place-update */
|
||
|
if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
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||
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set_inode_flag(inode, FI_NEED_IPU);
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||
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ret = file_write_and_wait_range(file, start, end);
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||
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clear_inode_flag(inode, FI_NEED_IPU);
|
||
|
|
||
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if (ret || is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
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||
|
trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
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return ret;
|
||
|
}
|
||
|
|
||
|
/* if the inode is dirty, let's recover all the time */
|
||
|
if (!f2fs_skip_inode_update(inode, datasync)) {
|
||
|
f2fs_write_inode(inode, NULL);
|
||
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goto go_write;
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||
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}
|
||
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|
||
|
/*
|
||
|
* if there is no written data, don't waste time to write recovery info.
|
||
|
*/
|
||
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if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
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!f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
|
||
|
|
||
|
/* it may call write_inode just prior to fsync */
|
||
|
if (need_inode_page_update(sbi, ino))
|
||
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goto go_write;
|
||
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|
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if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
|
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|
f2fs_exist_written_data(sbi, ino, UPDATE_INO))
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goto flush_out;
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goto out;
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} else {
|
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|
/*
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* for OPU case, during fsync(), node can be persisted before
|
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* data when lower device doesn't support write barrier, result
|
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|
* in data corruption after SPO.
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* So for strict fsync mode, force to use atomic write sematics
|
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|
* to keep write order in between data/node and last node to
|
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* avoid potential data corruption.
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*/
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if (F2FS_OPTION(sbi).fsync_mode ==
|
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FSYNC_MODE_STRICT && !atomic)
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atomic = true;
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|
}
|
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|
go_write:
|
||
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/*
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* Both of fdatasync() and fsync() are able to be recovered from
|
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|
* sudden-power-off.
|
||
|
*/
|
||
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f2fs_down_read(&F2FS_I(inode)->i_sem);
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|
cp_reason = need_do_checkpoint(inode);
|
||
|
f2fs_up_read(&F2FS_I(inode)->i_sem);
|
||
|
|
||
|
if (cp_reason) {
|
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|
/* all the dirty node pages should be flushed for POR */
|
||
|
ret = f2fs_sync_fs(inode->i_sb, 1);
|
||
|
|
||
|
/*
|
||
|
* We've secured consistency through sync_fs. Following pino
|
||
|
* will be used only for fsynced inodes after checkpoint.
|
||
|
*/
|
||
|
try_to_fix_pino(inode);
|
||
|
clear_inode_flag(inode, FI_APPEND_WRITE);
|
||
|
clear_inode_flag(inode, FI_UPDATE_WRITE);
|
||
|
goto out;
|
||
|
}
|
||
|
sync_nodes:
|
||
|
atomic_inc(&sbi->wb_sync_req[NODE]);
|
||
|
ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
|
||
|
atomic_dec(&sbi->wb_sync_req[NODE]);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
/* if cp_error was enabled, we should avoid infinite loop */
|
||
|
if (unlikely(f2fs_cp_error(sbi))) {
|
||
|
ret = -EIO;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (f2fs_need_inode_block_update(sbi, ino)) {
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
f2fs_write_inode(inode, NULL);
|
||
|
goto sync_nodes;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* If it's atomic_write, it's just fine to keep write ordering. So
|
||
|
* here we don't need to wait for node write completion, since we use
|
||
|
* node chain which serializes node blocks. If one of node writes are
|
||
|
* reordered, we can see simply broken chain, resulting in stopping
|
||
|
* roll-forward recovery. It means we'll recover all or none node blocks
|
||
|
* given fsync mark.
|
||
|
*/
|
||
|
if (!atomic) {
|
||
|
ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
/* once recovery info is written, don't need to tack this */
|
||
|
f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
|
||
|
clear_inode_flag(inode, FI_APPEND_WRITE);
|
||
|
flush_out:
|
||
|
if ((!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER) ||
|
||
|
(atomic && !test_opt(sbi, NOBARRIER) && f2fs_sb_has_blkzoned(sbi)))
|
||
|
ret = f2fs_issue_flush(sbi, inode->i_ino);
|
||
|
if (!ret) {
|
||
|
f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
|
||
|
clear_inode_flag(inode, FI_UPDATE_WRITE);
|
||
|
f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
|
||
|
}
|
||
|
f2fs_update_time(sbi, REQ_TIME);
|
||
|
out:
|
||
|
trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
|
||
|
{
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
|
||
|
return -EIO;
|
||
|
return f2fs_do_sync_file(file, start, end, datasync, false);
|
||
|
}
|
||
|
|
||
|
static bool __found_offset(struct address_space *mapping, block_t blkaddr,
|
||
|
pgoff_t index, int whence)
|
||
|
{
|
||
|
switch (whence) {
|
||
|
case SEEK_DATA:
|
||
|
if (__is_valid_data_blkaddr(blkaddr))
|
||
|
return true;
|
||
|
if (blkaddr == NEW_ADDR &&
|
||
|
xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
|
||
|
return true;
|
||
|
break;
|
||
|
case SEEK_HOLE:
|
||
|
if (blkaddr == NULL_ADDR)
|
||
|
return true;
|
||
|
break;
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
|
||
|
{
|
||
|
struct inode *inode = file->f_mapping->host;
|
||
|
loff_t maxbytes = inode->i_sb->s_maxbytes;
|
||
|
struct dnode_of_data dn;
|
||
|
pgoff_t pgofs, end_offset;
|
||
|
loff_t data_ofs = offset;
|
||
|
loff_t isize;
|
||
|
int err = 0;
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
isize = i_size_read(inode);
|
||
|
if (offset >= isize)
|
||
|
goto fail;
|
||
|
|
||
|
/* handle inline data case */
|
||
|
if (f2fs_has_inline_data(inode)) {
|
||
|
if (whence == SEEK_HOLE) {
|
||
|
data_ofs = isize;
|
||
|
goto found;
|
||
|
} else if (whence == SEEK_DATA) {
|
||
|
data_ofs = offset;
|
||
|
goto found;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
|
||
|
|
||
|
for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
|
||
|
if (err && err != -ENOENT) {
|
||
|
goto fail;
|
||
|
} else if (err == -ENOENT) {
|
||
|
/* direct node does not exists */
|
||
|
if (whence == SEEK_DATA) {
|
||
|
pgofs = f2fs_get_next_page_offset(&dn, pgofs);
|
||
|
continue;
|
||
|
} else {
|
||
|
goto found;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
|
||
|
/* find data/hole in dnode block */
|
||
|
for (; dn.ofs_in_node < end_offset;
|
||
|
dn.ofs_in_node++, pgofs++,
|
||
|
data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
|
||
|
block_t blkaddr;
|
||
|
|
||
|
blkaddr = f2fs_data_blkaddr(&dn);
|
||
|
|
||
|
if (__is_valid_data_blkaddr(blkaddr) &&
|
||
|
!f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
|
||
|
blkaddr, DATA_GENERIC_ENHANCE)) {
|
||
|
f2fs_put_dnode(&dn);
|
||
|
goto fail;
|
||
|
}
|
||
|
|
||
|
if (__found_offset(file->f_mapping, blkaddr,
|
||
|
pgofs, whence)) {
|
||
|
f2fs_put_dnode(&dn);
|
||
|
goto found;
|
||
|
}
|
||
|
}
|
||
|
f2fs_put_dnode(&dn);
|
||
|
}
|
||
|
|
||
|
if (whence == SEEK_DATA)
|
||
|
goto fail;
|
||
|
found:
|
||
|
if (whence == SEEK_HOLE && data_ofs > isize)
|
||
|
data_ofs = isize;
|
||
|
inode_unlock(inode);
|
||
|
return vfs_setpos(file, data_ofs, maxbytes);
|
||
|
fail:
|
||
|
inode_unlock(inode);
|
||
|
return -ENXIO;
|
||
|
}
|
||
|
|
||
|
static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
|
||
|
{
|
||
|
struct inode *inode = file->f_mapping->host;
|
||
|
loff_t maxbytes = inode->i_sb->s_maxbytes;
|
||
|
|
||
|
if (f2fs_compressed_file(inode))
|
||
|
maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
|
||
|
|
||
|
switch (whence) {
|
||
|
case SEEK_SET:
|
||
|
case SEEK_CUR:
|
||
|
case SEEK_END:
|
||
|
return generic_file_llseek_size(file, offset, whence,
|
||
|
maxbytes, i_size_read(inode));
|
||
|
case SEEK_DATA:
|
||
|
case SEEK_HOLE:
|
||
|
if (offset < 0)
|
||
|
return -ENXIO;
|
||
|
return f2fs_seek_block(file, offset, whence);
|
||
|
}
|
||
|
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
|
||
|
{
|
||
|
struct inode *inode = file_inode(file);
|
||
|
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
|
||
|
return -EIO;
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
file_accessed(file);
|
||
|
vma->vm_ops = &f2fs_file_vm_ops;
|
||
|
|
||
|
f2fs_down_read(&F2FS_I(inode)->i_sem);
|
||
|
set_inode_flag(inode, FI_MMAP_FILE);
|
||
|
f2fs_up_read(&F2FS_I(inode)->i_sem);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_file_open(struct inode *inode, struct file *filp)
|
||
|
{
|
||
|
int err = fscrypt_file_open(inode, filp);
|
||
|
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
err = fsverity_file_open(inode, filp);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
filp->f_mode |= FMODE_NOWAIT;
|
||
|
|
||
|
return dquot_file_open(inode, filp);
|
||
|
}
|
||
|
|
||
|
void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
||
|
struct f2fs_node *raw_node;
|
||
|
int nr_free = 0, ofs = dn->ofs_in_node, len = count;
|
||
|
__le32 *addr;
|
||
|
int base = 0;
|
||
|
bool compressed_cluster = false;
|
||
|
int cluster_index = 0, valid_blocks = 0;
|
||
|
int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
|
||
|
bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
|
||
|
|
||
|
if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
|
||
|
base = get_extra_isize(dn->inode);
|
||
|
|
||
|
raw_node = F2FS_NODE(dn->node_page);
|
||
|
addr = blkaddr_in_node(raw_node) + base + ofs;
|
||
|
|
||
|
/* Assumption: truncateion starts with cluster */
|
||
|
for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
|
||
|
block_t blkaddr = le32_to_cpu(*addr);
|
||
|
|
||
|
if (f2fs_compressed_file(dn->inode) &&
|
||
|
!(cluster_index & (cluster_size - 1))) {
|
||
|
if (compressed_cluster)
|
||
|
f2fs_i_compr_blocks_update(dn->inode,
|
||
|
valid_blocks, false);
|
||
|
compressed_cluster = (blkaddr == COMPRESS_ADDR);
|
||
|
valid_blocks = 0;
|
||
|
}
|
||
|
|
||
|
if (blkaddr == NULL_ADDR)
|
||
|
continue;
|
||
|
|
||
|
dn->data_blkaddr = NULL_ADDR;
|
||
|
f2fs_set_data_blkaddr(dn);
|
||
|
|
||
|
if (__is_valid_data_blkaddr(blkaddr)) {
|
||
|
if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
|
||
|
DATA_GENERIC_ENHANCE))
|
||
|
continue;
|
||
|
if (compressed_cluster)
|
||
|
valid_blocks++;
|
||
|
}
|
||
|
|
||
|
if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
|
||
|
clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
|
||
|
|
||
|
f2fs_invalidate_blocks(sbi, blkaddr);
|
||
|
|
||
|
if (!released || blkaddr != COMPRESS_ADDR)
|
||
|
nr_free++;
|
||
|
}
|
||
|
|
||
|
if (compressed_cluster)
|
||
|
f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
|
||
|
|
||
|
if (nr_free) {
|
||
|
pgoff_t fofs;
|
||
|
/*
|
||
|
* once we invalidate valid blkaddr in range [ofs, ofs + count],
|
||
|
* we will invalidate all blkaddr in the whole range.
|
||
|
*/
|
||
|
fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
|
||
|
dn->inode) + ofs;
|
||
|
f2fs_update_read_extent_cache_range(dn, fofs, 0, len);
|
||
|
dec_valid_block_count(sbi, dn->inode, nr_free);
|
||
|
}
|
||
|
dn->ofs_in_node = ofs;
|
||
|
|
||
|
f2fs_update_time(sbi, REQ_TIME);
|
||
|
trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
|
||
|
dn->ofs_in_node, nr_free);
|
||
|
}
|
||
|
|
||
|
void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
|
||
|
{
|
||
|
f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
|
||
|
}
|
||
|
|
||
|
static int truncate_partial_data_page(struct inode *inode, u64 from,
|
||
|
bool cache_only)
|
||
|
{
|
||
|
loff_t offset = from & (PAGE_SIZE - 1);
|
||
|
pgoff_t index = from >> PAGE_SHIFT;
|
||
|
struct address_space *mapping = inode->i_mapping;
|
||
|
struct page *page;
|
||
|
|
||
|
if (!offset && !cache_only)
|
||
|
return 0;
|
||
|
|
||
|
if (cache_only) {
|
||
|
page = find_lock_page(mapping, index);
|
||
|
if (page && PageUptodate(page))
|
||
|
goto truncate_out;
|
||
|
f2fs_put_page(page, 1);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
page = f2fs_get_lock_data_page(inode, index, true);
|
||
|
if (IS_ERR(page))
|
||
|
return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
|
||
|
truncate_out:
|
||
|
f2fs_wait_on_page_writeback(page, DATA, true, true);
|
||
|
zero_user(page, offset, PAGE_SIZE - offset);
|
||
|
|
||
|
/* An encrypted inode should have a key and truncate the last page. */
|
||
|
f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
|
||
|
if (!cache_only)
|
||
|
set_page_dirty(page);
|
||
|
f2fs_put_page(page, 1);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct dnode_of_data dn;
|
||
|
pgoff_t free_from;
|
||
|
int count = 0, err = 0;
|
||
|
struct page *ipage;
|
||
|
bool truncate_page = false;
|
||
|
|
||
|
trace_f2fs_truncate_blocks_enter(inode, from);
|
||
|
|
||
|
free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
|
||
|
|
||
|
if (free_from >= max_file_blocks(inode))
|
||
|
goto free_partial;
|
||
|
|
||
|
if (lock)
|
||
|
f2fs_lock_op(sbi);
|
||
|
|
||
|
ipage = f2fs_get_node_page(sbi, inode->i_ino);
|
||
|
if (IS_ERR(ipage)) {
|
||
|
err = PTR_ERR(ipage);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (f2fs_has_inline_data(inode)) {
|
||
|
f2fs_truncate_inline_inode(inode, ipage, from);
|
||
|
f2fs_put_page(ipage, 1);
|
||
|
truncate_page = true;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
set_new_dnode(&dn, inode, ipage, NULL, 0);
|
||
|
err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
|
||
|
if (err) {
|
||
|
if (err == -ENOENT)
|
||
|
goto free_next;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
count = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
|
||
|
count -= dn.ofs_in_node;
|
||
|
f2fs_bug_on(sbi, count < 0);
|
||
|
|
||
|
if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
|
||
|
f2fs_truncate_data_blocks_range(&dn, count);
|
||
|
free_from += count;
|
||
|
}
|
||
|
|
||
|
f2fs_put_dnode(&dn);
|
||
|
free_next:
|
||
|
err = f2fs_truncate_inode_blocks(inode, free_from);
|
||
|
out:
|
||
|
if (lock)
|
||
|
f2fs_unlock_op(sbi);
|
||
|
free_partial:
|
||
|
/* lastly zero out the first data page */
|
||
|
if (!err)
|
||
|
err = truncate_partial_data_page(inode, from, truncate_page);
|
||
|
|
||
|
trace_f2fs_truncate_blocks_exit(inode, err);
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
|
||
|
{
|
||
|
u64 free_from = from;
|
||
|
int err;
|
||
|
|
||
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
||
|
/*
|
||
|
* for compressed file, only support cluster size
|
||
|
* aligned truncation.
|
||
|
*/
|
||
|
if (f2fs_compressed_file(inode))
|
||
|
free_from = round_up(from,
|
||
|
F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
|
||
|
#endif
|
||
|
|
||
|
err = f2fs_do_truncate_blocks(inode, free_from, lock);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
#ifdef CONFIG_F2FS_FS_COMPRESSION
|
||
|
/*
|
||
|
* For compressed file, after release compress blocks, don't allow write
|
||
|
* direct, but we should allow write direct after truncate to zero.
|
||
|
*/
|
||
|
if (f2fs_compressed_file(inode) && !free_from
|
||
|
&& is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
|
||
|
clear_inode_flag(inode, FI_COMPRESS_RELEASED);
|
||
|
|
||
|
if (from != free_from) {
|
||
|
err = f2fs_truncate_partial_cluster(inode, from, lock);
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int f2fs_truncate(struct inode *inode)
|
||
|
{
|
||
|
int err;
|
||
|
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
|
||
|
return -EIO;
|
||
|
|
||
|
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
|
||
|
S_ISLNK(inode->i_mode)))
|
||
|
return 0;
|
||
|
|
||
|
trace_f2fs_truncate(inode);
|
||
|
|
||
|
if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
|
||
|
f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
|
||
|
return -EIO;
|
||
|
}
|
||
|
|
||
|
err = f2fs_dquot_initialize(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
/* we should check inline_data size */
|
||
|
if (!f2fs_may_inline_data(inode)) {
|
||
|
err = f2fs_convert_inline_inode(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
inode->i_mtime = inode->i_ctime = current_time(inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, false);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static bool f2fs_force_buffered_io(struct inode *inode, int rw)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
|
||
|
if (!fscrypt_dio_supported(inode))
|
||
|
return true;
|
||
|
if (fsverity_active(inode))
|
||
|
return true;
|
||
|
if (f2fs_compressed_file(inode))
|
||
|
return true;
|
||
|
|
||
|
/* disallow direct IO if any of devices has unaligned blksize */
|
||
|
if (f2fs_is_multi_device(sbi) && !sbi->aligned_blksize)
|
||
|
return true;
|
||
|
/*
|
||
|
* for blkzoned device, fallback direct IO to buffered IO, so
|
||
|
* all IOs can be serialized by log-structured write.
|
||
|
*/
|
||
|
if (f2fs_sb_has_blkzoned(sbi) && (rw == WRITE))
|
||
|
return true;
|
||
|
if (f2fs_lfs_mode(sbi) && rw == WRITE && F2FS_IO_ALIGNED(sbi))
|
||
|
return true;
|
||
|
if (is_sbi_flag_set(sbi, SBI_CP_DISABLED))
|
||
|
return true;
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
|
||
|
struct kstat *stat, u32 request_mask, unsigned int query_flags)
|
||
|
{
|
||
|
struct inode *inode = d_inode(path->dentry);
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
struct f2fs_inode *ri = NULL;
|
||
|
unsigned int flags;
|
||
|
|
||
|
if (f2fs_has_extra_attr(inode) &&
|
||
|
f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
|
||
|
F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
|
||
|
stat->result_mask |= STATX_BTIME;
|
||
|
stat->btime.tv_sec = fi->i_crtime.tv_sec;
|
||
|
stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Return the DIO alignment restrictions if requested. We only return
|
||
|
* this information when requested, since on encrypted files it might
|
||
|
* take a fair bit of work to get if the file wasn't opened recently.
|
||
|
*
|
||
|
* f2fs sometimes supports DIO reads but not DIO writes. STATX_DIOALIGN
|
||
|
* cannot represent that, so in that case we report no DIO support.
|
||
|
*/
|
||
|
if ((request_mask & STATX_DIOALIGN) && S_ISREG(inode->i_mode)) {
|
||
|
unsigned int bsize = i_blocksize(inode);
|
||
|
|
||
|
stat->result_mask |= STATX_DIOALIGN;
|
||
|
if (!f2fs_force_buffered_io(inode, WRITE)) {
|
||
|
stat->dio_mem_align = bsize;
|
||
|
stat->dio_offset_align = bsize;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
flags = fi->i_flags;
|
||
|
if (flags & F2FS_COMPR_FL)
|
||
|
stat->attributes |= STATX_ATTR_COMPRESSED;
|
||
|
if (flags & F2FS_APPEND_FL)
|
||
|
stat->attributes |= STATX_ATTR_APPEND;
|
||
|
if (IS_ENCRYPTED(inode))
|
||
|
stat->attributes |= STATX_ATTR_ENCRYPTED;
|
||
|
if (flags & F2FS_IMMUTABLE_FL)
|
||
|
stat->attributes |= STATX_ATTR_IMMUTABLE;
|
||
|
if (flags & F2FS_NODUMP_FL)
|
||
|
stat->attributes |= STATX_ATTR_NODUMP;
|
||
|
if (IS_VERITY(inode))
|
||
|
stat->attributes |= STATX_ATTR_VERITY;
|
||
|
|
||
|
stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
|
||
|
STATX_ATTR_APPEND |
|
||
|
STATX_ATTR_ENCRYPTED |
|
||
|
STATX_ATTR_IMMUTABLE |
|
||
|
STATX_ATTR_NODUMP |
|
||
|
STATX_ATTR_VERITY);
|
||
|
|
||
|
generic_fillattr(mnt_userns, inode, stat);
|
||
|
|
||
|
/* we need to show initial sectors used for inline_data/dentries */
|
||
|
if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
|
||
|
f2fs_has_inline_dentry(inode))
|
||
|
stat->blocks += (stat->size + 511) >> 9;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
#ifdef CONFIG_F2FS_FS_POSIX_ACL
|
||
|
static void __setattr_copy(struct user_namespace *mnt_userns,
|
||
|
struct inode *inode, const struct iattr *attr)
|
||
|
{
|
||
|
unsigned int ia_valid = attr->ia_valid;
|
||
|
|
||
|
i_uid_update(mnt_userns, attr, inode);
|
||
|
i_gid_update(mnt_userns, attr, inode);
|
||
|
if (ia_valid & ATTR_ATIME)
|
||
|
inode->i_atime = attr->ia_atime;
|
||
|
if (ia_valid & ATTR_MTIME)
|
||
|
inode->i_mtime = attr->ia_mtime;
|
||
|
if (ia_valid & ATTR_CTIME)
|
||
|
inode->i_ctime = attr->ia_ctime;
|
||
|
if (ia_valid & ATTR_MODE) {
|
||
|
umode_t mode = attr->ia_mode;
|
||
|
vfsgid_t vfsgid = i_gid_into_vfsgid(mnt_userns, inode);
|
||
|
|
||
|
if (!vfsgid_in_group_p(vfsgid) &&
|
||
|
!capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
|
||
|
mode &= ~S_ISGID;
|
||
|
set_acl_inode(inode, mode);
|
||
|
}
|
||
|
}
|
||
|
#else
|
||
|
#define __setattr_copy setattr_copy
|
||
|
#endif
|
||
|
|
||
|
int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
|
||
|
struct iattr *attr)
|
||
|
{
|
||
|
struct inode *inode = d_inode(dentry);
|
||
|
int err;
|
||
|
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
|
||
|
return -EIO;
|
||
|
|
||
|
if (unlikely(IS_IMMUTABLE(inode)))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (unlikely(IS_APPEND(inode) &&
|
||
|
(attr->ia_valid & (ATTR_MODE | ATTR_UID |
|
||
|
ATTR_GID | ATTR_TIMES_SET))))
|
||
|
return -EPERM;
|
||
|
|
||
|
if ((attr->ia_valid & ATTR_SIZE) &&
|
||
|
!f2fs_is_compress_backend_ready(inode))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
err = setattr_prepare(mnt_userns, dentry, attr);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
err = fscrypt_prepare_setattr(dentry, attr);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
err = fsverity_prepare_setattr(dentry, attr);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
if (is_quota_modification(mnt_userns, inode, attr)) {
|
||
|
err = f2fs_dquot_initialize(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
if (i_uid_needs_update(mnt_userns, attr, inode) ||
|
||
|
i_gid_needs_update(mnt_userns, attr, inode)) {
|
||
|
f2fs_lock_op(F2FS_I_SB(inode));
|
||
|
err = dquot_transfer(mnt_userns, inode, attr);
|
||
|
if (err) {
|
||
|
set_sbi_flag(F2FS_I_SB(inode),
|
||
|
SBI_QUOTA_NEED_REPAIR);
|
||
|
f2fs_unlock_op(F2FS_I_SB(inode));
|
||
|
return err;
|
||
|
}
|
||
|
/*
|
||
|
* update uid/gid under lock_op(), so that dquot and inode can
|
||
|
* be updated atomically.
|
||
|
*/
|
||
|
i_uid_update(mnt_userns, attr, inode);
|
||
|
i_gid_update(mnt_userns, attr, inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
f2fs_unlock_op(F2FS_I_SB(inode));
|
||
|
}
|
||
|
|
||
|
if (attr->ia_valid & ATTR_SIZE) {
|
||
|
loff_t old_size = i_size_read(inode);
|
||
|
|
||
|
if (attr->ia_size > MAX_INLINE_DATA(inode)) {
|
||
|
/*
|
||
|
* should convert inline inode before i_size_write to
|
||
|
* keep smaller than inline_data size with inline flag.
|
||
|
*/
|
||
|
err = f2fs_convert_inline_inode(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
|
||
|
truncate_setsize(inode, attr->ia_size);
|
||
|
|
||
|
if (attr->ia_size <= old_size)
|
||
|
err = f2fs_truncate(inode);
|
||
|
/*
|
||
|
* do not trim all blocks after i_size if target size is
|
||
|
* larger than i_size.
|
||
|
*/
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
spin_lock(&F2FS_I(inode)->i_size_lock);
|
||
|
inode->i_mtime = inode->i_ctime = current_time(inode);
|
||
|
F2FS_I(inode)->last_disk_size = i_size_read(inode);
|
||
|
spin_unlock(&F2FS_I(inode)->i_size_lock);
|
||
|
}
|
||
|
|
||
|
__setattr_copy(mnt_userns, inode, attr);
|
||
|
|
||
|
if (attr->ia_valid & ATTR_MODE) {
|
||
|
err = posix_acl_chmod(mnt_userns, inode, f2fs_get_inode_mode(inode));
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_ACL_MODE)) {
|
||
|
if (!err)
|
||
|
inode->i_mode = F2FS_I(inode)->i_acl_mode;
|
||
|
clear_inode_flag(inode, FI_ACL_MODE);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* file size may changed here */
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
|
||
|
/* inode change will produce dirty node pages flushed by checkpoint */
|
||
|
f2fs_balance_fs(F2FS_I_SB(inode), true);
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
const struct inode_operations f2fs_file_inode_operations = {
|
||
|
.getattr = f2fs_getattr,
|
||
|
.setattr = f2fs_setattr,
|
||
|
.get_acl = f2fs_get_acl,
|
||
|
.set_acl = f2fs_set_acl,
|
||
|
.listxattr = f2fs_listxattr,
|
||
|
.fiemap = f2fs_fiemap,
|
||
|
.fileattr_get = f2fs_fileattr_get,
|
||
|
.fileattr_set = f2fs_fileattr_set,
|
||
|
};
|
||
|
|
||
|
static int fill_zero(struct inode *inode, pgoff_t index,
|
||
|
loff_t start, loff_t len)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct page *page;
|
||
|
|
||
|
if (!len)
|
||
|
return 0;
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
page = f2fs_get_new_data_page(inode, NULL, index, false);
|
||
|
f2fs_unlock_op(sbi);
|
||
|
|
||
|
if (IS_ERR(page))
|
||
|
return PTR_ERR(page);
|
||
|
|
||
|
f2fs_wait_on_page_writeback(page, DATA, true, true);
|
||
|
zero_user(page, start, len);
|
||
|
set_page_dirty(page);
|
||
|
f2fs_put_page(page, 1);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
|
||
|
{
|
||
|
int err;
|
||
|
|
||
|
while (pg_start < pg_end) {
|
||
|
struct dnode_of_data dn;
|
||
|
pgoff_t end_offset, count;
|
||
|
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
|
||
|
if (err) {
|
||
|
if (err == -ENOENT) {
|
||
|
pg_start = f2fs_get_next_page_offset(&dn,
|
||
|
pg_start);
|
||
|
continue;
|
||
|
}
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
|
||
|
|
||
|
f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
|
||
|
|
||
|
f2fs_truncate_data_blocks_range(&dn, count);
|
||
|
f2fs_put_dnode(&dn);
|
||
|
|
||
|
pg_start += count;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
|
||
|
{
|
||
|
pgoff_t pg_start, pg_end;
|
||
|
loff_t off_start, off_end;
|
||
|
int ret;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
|
||
|
pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
|
||
|
|
||
|
off_start = offset & (PAGE_SIZE - 1);
|
||
|
off_end = (offset + len) & (PAGE_SIZE - 1);
|
||
|
|
||
|
if (pg_start == pg_end) {
|
||
|
ret = fill_zero(inode, pg_start, off_start,
|
||
|
off_end - off_start);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
} else {
|
||
|
if (off_start) {
|
||
|
ret = fill_zero(inode, pg_start++, off_start,
|
||
|
PAGE_SIZE - off_start);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
if (off_end) {
|
||
|
ret = fill_zero(inode, pg_end, 0, off_end);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
if (pg_start < pg_end) {
|
||
|
loff_t blk_start, blk_end;
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
blk_start = (loff_t)pg_start << PAGE_SHIFT;
|
||
|
blk_end = (loff_t)pg_end << PAGE_SHIFT;
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
|
||
|
truncate_pagecache_range(inode, blk_start, blk_end - 1);
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
ret = f2fs_truncate_hole(inode, pg_start, pg_end);
|
||
|
f2fs_unlock_op(sbi);
|
||
|
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
|
||
|
int *do_replace, pgoff_t off, pgoff_t len)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct dnode_of_data dn;
|
||
|
int ret, done, i;
|
||
|
|
||
|
next_dnode:
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
|
||
|
if (ret && ret != -ENOENT) {
|
||
|
return ret;
|
||
|
} else if (ret == -ENOENT) {
|
||
|
if (dn.max_level == 0)
|
||
|
return -ENOENT;
|
||
|
done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
|
||
|
dn.ofs_in_node, len);
|
||
|
blkaddr += done;
|
||
|
do_replace += done;
|
||
|
goto next;
|
||
|
}
|
||
|
|
||
|
done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
|
||
|
dn.ofs_in_node, len);
|
||
|
for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
|
||
|
*blkaddr = f2fs_data_blkaddr(&dn);
|
||
|
|
||
|
if (__is_valid_data_blkaddr(*blkaddr) &&
|
||
|
!f2fs_is_valid_blkaddr(sbi, *blkaddr,
|
||
|
DATA_GENERIC_ENHANCE)) {
|
||
|
f2fs_put_dnode(&dn);
|
||
|
f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
|
||
|
return -EFSCORRUPTED;
|
||
|
}
|
||
|
|
||
|
if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
|
||
|
|
||
|
if (f2fs_lfs_mode(sbi)) {
|
||
|
f2fs_put_dnode(&dn);
|
||
|
return -EOPNOTSUPP;
|
||
|
}
|
||
|
|
||
|
/* do not invalidate this block address */
|
||
|
f2fs_update_data_blkaddr(&dn, NULL_ADDR);
|
||
|
*do_replace = 1;
|
||
|
}
|
||
|
}
|
||
|
f2fs_put_dnode(&dn);
|
||
|
next:
|
||
|
len -= done;
|
||
|
off += done;
|
||
|
if (len)
|
||
|
goto next_dnode;
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
|
||
|
int *do_replace, pgoff_t off, int len)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct dnode_of_data dn;
|
||
|
int ret, i;
|
||
|
|
||
|
for (i = 0; i < len; i++, do_replace++, blkaddr++) {
|
||
|
if (*do_replace == 0)
|
||
|
continue;
|
||
|
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
|
||
|
if (ret) {
|
||
|
dec_valid_block_count(sbi, inode, 1);
|
||
|
f2fs_invalidate_blocks(sbi, *blkaddr);
|
||
|
} else {
|
||
|
f2fs_update_data_blkaddr(&dn, *blkaddr);
|
||
|
}
|
||
|
f2fs_put_dnode(&dn);
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
|
||
|
block_t *blkaddr, int *do_replace,
|
||
|
pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
|
||
|
pgoff_t i = 0;
|
||
|
int ret;
|
||
|
|
||
|
while (i < len) {
|
||
|
if (blkaddr[i] == NULL_ADDR && !full) {
|
||
|
i++;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
|
||
|
struct dnode_of_data dn;
|
||
|
struct node_info ni;
|
||
|
size_t new_size;
|
||
|
pgoff_t ilen;
|
||
|
|
||
|
set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
ret = f2fs_get_node_info(sbi, dn.nid, &ni, false);
|
||
|
if (ret) {
|
||
|
f2fs_put_dnode(&dn);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
ilen = min((pgoff_t)
|
||
|
ADDRS_PER_PAGE(dn.node_page, dst_inode) -
|
||
|
dn.ofs_in_node, len - i);
|
||
|
do {
|
||
|
dn.data_blkaddr = f2fs_data_blkaddr(&dn);
|
||
|
f2fs_truncate_data_blocks_range(&dn, 1);
|
||
|
|
||
|
if (do_replace[i]) {
|
||
|
f2fs_i_blocks_write(src_inode,
|
||
|
1, false, false);
|
||
|
f2fs_i_blocks_write(dst_inode,
|
||
|
1, true, false);
|
||
|
f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
|
||
|
blkaddr[i], ni.version, true, false);
|
||
|
|
||
|
do_replace[i] = 0;
|
||
|
}
|
||
|
dn.ofs_in_node++;
|
||
|
i++;
|
||
|
new_size = (loff_t)(dst + i) << PAGE_SHIFT;
|
||
|
if (dst_inode->i_size < new_size)
|
||
|
f2fs_i_size_write(dst_inode, new_size);
|
||
|
} while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
|
||
|
|
||
|
f2fs_put_dnode(&dn);
|
||
|
} else {
|
||
|
struct page *psrc, *pdst;
|
||
|
|
||
|
psrc = f2fs_get_lock_data_page(src_inode,
|
||
|
src + i, true);
|
||
|
if (IS_ERR(psrc))
|
||
|
return PTR_ERR(psrc);
|
||
|
pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
|
||
|
true);
|
||
|
if (IS_ERR(pdst)) {
|
||
|
f2fs_put_page(psrc, 1);
|
||
|
return PTR_ERR(pdst);
|
||
|
}
|
||
|
memcpy_page(pdst, 0, psrc, 0, PAGE_SIZE);
|
||
|
set_page_dirty(pdst);
|
||
|
f2fs_put_page(pdst, 1);
|
||
|
f2fs_put_page(psrc, 1);
|
||
|
|
||
|
ret = f2fs_truncate_hole(src_inode,
|
||
|
src + i, src + i + 1);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
i++;
|
||
|
}
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int __exchange_data_block(struct inode *src_inode,
|
||
|
struct inode *dst_inode, pgoff_t src, pgoff_t dst,
|
||
|
pgoff_t len, bool full)
|
||
|
{
|
||
|
block_t *src_blkaddr;
|
||
|
int *do_replace;
|
||
|
pgoff_t olen;
|
||
|
int ret;
|
||
|
|
||
|
while (len) {
|
||
|
olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
|
||
|
|
||
|
src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
|
||
|
array_size(olen, sizeof(block_t)),
|
||
|
GFP_NOFS);
|
||
|
if (!src_blkaddr)
|
||
|
return -ENOMEM;
|
||
|
|
||
|
do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
|
||
|
array_size(olen, sizeof(int)),
|
||
|
GFP_NOFS);
|
||
|
if (!do_replace) {
|
||
|
kvfree(src_blkaddr);
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
|
||
|
ret = __read_out_blkaddrs(src_inode, src_blkaddr,
|
||
|
do_replace, src, olen);
|
||
|
if (ret)
|
||
|
goto roll_back;
|
||
|
|
||
|
ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
|
||
|
do_replace, src, dst, olen, full);
|
||
|
if (ret)
|
||
|
goto roll_back;
|
||
|
|
||
|
src += olen;
|
||
|
dst += olen;
|
||
|
len -= olen;
|
||
|
|
||
|
kvfree(src_blkaddr);
|
||
|
kvfree(do_replace);
|
||
|
}
|
||
|
return 0;
|
||
|
|
||
|
roll_back:
|
||
|
__roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
|
||
|
kvfree(src_blkaddr);
|
||
|
kvfree(do_replace);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
|
||
|
pgoff_t start = offset >> PAGE_SHIFT;
|
||
|
pgoff_t end = (offset + len) >> PAGE_SHIFT;
|
||
|
int ret;
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
/* avoid gc operation during block exchange */
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
f2fs_drop_extent_tree(inode);
|
||
|
truncate_pagecache(inode, offset);
|
||
|
ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
|
||
|
f2fs_unlock_op(sbi);
|
||
|
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
|
||
|
{
|
||
|
loff_t new_size;
|
||
|
int ret;
|
||
|
|
||
|
if (offset + len >= i_size_read(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
/* collapse range should be aligned to block size of f2fs. */
|
||
|
if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
|
||
|
return -EINVAL;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
/* write out all dirty pages from offset */
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
ret = f2fs_do_collapse(inode, offset, len);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
/* write out all moved pages, if possible */
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
|
||
|
truncate_pagecache(inode, offset);
|
||
|
|
||
|
new_size = i_size_read(inode) - len;
|
||
|
ret = f2fs_truncate_blocks(inode, new_size, true);
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
if (!ret)
|
||
|
f2fs_i_size_write(inode, new_size);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
|
||
|
pgoff_t end)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
||
|
pgoff_t index = start;
|
||
|
unsigned int ofs_in_node = dn->ofs_in_node;
|
||
|
blkcnt_t count = 0;
|
||
|
int ret;
|
||
|
|
||
|
for (; index < end; index++, dn->ofs_in_node++) {
|
||
|
if (f2fs_data_blkaddr(dn) == NULL_ADDR)
|
||
|
count++;
|
||
|
}
|
||
|
|
||
|
dn->ofs_in_node = ofs_in_node;
|
||
|
ret = f2fs_reserve_new_blocks(dn, count);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
dn->ofs_in_node = ofs_in_node;
|
||
|
for (index = start; index < end; index++, dn->ofs_in_node++) {
|
||
|
dn->data_blkaddr = f2fs_data_blkaddr(dn);
|
||
|
/*
|
||
|
* f2fs_reserve_new_blocks will not guarantee entire block
|
||
|
* allocation.
|
||
|
*/
|
||
|
if (dn->data_blkaddr == NULL_ADDR) {
|
||
|
ret = -ENOSPC;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (dn->data_blkaddr == NEW_ADDR)
|
||
|
continue;
|
||
|
|
||
|
if (!f2fs_is_valid_blkaddr(sbi, dn->data_blkaddr,
|
||
|
DATA_GENERIC_ENHANCE)) {
|
||
|
ret = -EFSCORRUPTED;
|
||
|
f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
|
||
|
dn->data_blkaddr = NEW_ADDR;
|
||
|
f2fs_set_data_blkaddr(dn);
|
||
|
}
|
||
|
|
||
|
f2fs_update_read_extent_cache_range(dn, start, 0, index - start);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
|
||
|
int mode)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct address_space *mapping = inode->i_mapping;
|
||
|
pgoff_t index, pg_start, pg_end;
|
||
|
loff_t new_size = i_size_read(inode);
|
||
|
loff_t off_start, off_end;
|
||
|
int ret = 0;
|
||
|
|
||
|
ret = inode_newsize_ok(inode, (len + offset));
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
|
||
|
pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
|
||
|
|
||
|
off_start = offset & (PAGE_SIZE - 1);
|
||
|
off_end = (offset + len) & (PAGE_SIZE - 1);
|
||
|
|
||
|
if (pg_start == pg_end) {
|
||
|
ret = fill_zero(inode, pg_start, off_start,
|
||
|
off_end - off_start);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
new_size = max_t(loff_t, new_size, offset + len);
|
||
|
} else {
|
||
|
if (off_start) {
|
||
|
ret = fill_zero(inode, pg_start++, off_start,
|
||
|
PAGE_SIZE - off_start);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
new_size = max_t(loff_t, new_size,
|
||
|
(loff_t)pg_start << PAGE_SHIFT);
|
||
|
}
|
||
|
|
||
|
for (index = pg_start; index < pg_end;) {
|
||
|
struct dnode_of_data dn;
|
||
|
unsigned int end_offset;
|
||
|
pgoff_t end;
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(mapping);
|
||
|
|
||
|
truncate_pagecache_range(inode,
|
||
|
(loff_t)index << PAGE_SHIFT,
|
||
|
((loff_t)pg_end << PAGE_SHIFT) - 1);
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
|
||
|
if (ret) {
|
||
|
f2fs_unlock_op(sbi);
|
||
|
filemap_invalidate_unlock(mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
end = min(pg_end, end_offset - dn.ofs_in_node + index);
|
||
|
|
||
|
ret = f2fs_do_zero_range(&dn, index, end);
|
||
|
f2fs_put_dnode(&dn);
|
||
|
|
||
|
f2fs_unlock_op(sbi);
|
||
|
filemap_invalidate_unlock(mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
|
||
|
f2fs_balance_fs(sbi, dn.node_changed);
|
||
|
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
index = end;
|
||
|
new_size = max_t(loff_t, new_size,
|
||
|
(loff_t)index << PAGE_SHIFT);
|
||
|
}
|
||
|
|
||
|
if (off_end) {
|
||
|
ret = fill_zero(inode, pg_end, 0, off_end);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
new_size = max_t(loff_t, new_size, offset + len);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
out:
|
||
|
if (new_size > i_size_read(inode)) {
|
||
|
if (mode & FALLOC_FL_KEEP_SIZE)
|
||
|
file_set_keep_isize(inode);
|
||
|
else
|
||
|
f2fs_i_size_write(inode, new_size);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct address_space *mapping = inode->i_mapping;
|
||
|
pgoff_t nr, pg_start, pg_end, delta, idx;
|
||
|
loff_t new_size;
|
||
|
int ret = 0;
|
||
|
|
||
|
new_size = i_size_read(inode) + len;
|
||
|
ret = inode_newsize_ok(inode, new_size);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (offset >= i_size_read(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
/* insert range should be aligned to block size of f2fs. */
|
||
|
if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
|
||
|
return -EINVAL;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
filemap_invalidate_lock(mapping);
|
||
|
ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
|
||
|
filemap_invalidate_unlock(mapping);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
/* write out all dirty pages from offset */
|
||
|
ret = filemap_write_and_wait_range(mapping, offset, LLONG_MAX);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
pg_start = offset >> PAGE_SHIFT;
|
||
|
pg_end = (offset + len) >> PAGE_SHIFT;
|
||
|
delta = pg_end - pg_start;
|
||
|
idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
|
||
|
|
||
|
/* avoid gc operation during block exchange */
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(mapping);
|
||
|
truncate_pagecache(inode, offset);
|
||
|
|
||
|
while (!ret && idx > pg_start) {
|
||
|
nr = idx - pg_start;
|
||
|
if (nr > delta)
|
||
|
nr = delta;
|
||
|
idx -= nr;
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
f2fs_drop_extent_tree(inode);
|
||
|
|
||
|
ret = __exchange_data_block(inode, inode, idx,
|
||
|
idx + delta, nr, false);
|
||
|
f2fs_unlock_op(sbi);
|
||
|
}
|
||
|
filemap_invalidate_unlock(mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
|
||
|
/* write out all moved pages, if possible */
|
||
|
filemap_invalidate_lock(mapping);
|
||
|
filemap_write_and_wait_range(mapping, offset, LLONG_MAX);
|
||
|
truncate_pagecache(inode, offset);
|
||
|
filemap_invalidate_unlock(mapping);
|
||
|
|
||
|
if (!ret)
|
||
|
f2fs_i_size_write(inode, new_size);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int expand_inode_data(struct inode *inode, loff_t offset,
|
||
|
loff_t len, int mode)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
|
||
|
.m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
|
||
|
.m_may_create = true };
|
||
|
struct f2fs_gc_control gc_control = { .victim_segno = NULL_SEGNO,
|
||
|
.init_gc_type = FG_GC,
|
||
|
.should_migrate_blocks = false,
|
||
|
.err_gc_skipped = true,
|
||
|
.nr_free_secs = 0 };
|
||
|
pgoff_t pg_start, pg_end;
|
||
|
loff_t new_size = i_size_read(inode);
|
||
|
loff_t off_end;
|
||
|
block_t expanded = 0;
|
||
|
int err;
|
||
|
|
||
|
err = inode_newsize_ok(inode, (len + offset));
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
err = f2fs_convert_inline_inode(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
|
||
|
pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
|
||
|
off_end = (offset + len) & (PAGE_SIZE - 1);
|
||
|
|
||
|
map.m_lblk = pg_start;
|
||
|
map.m_len = pg_end - pg_start;
|
||
|
if (off_end)
|
||
|
map.m_len++;
|
||
|
|
||
|
if (!map.m_len)
|
||
|
return 0;
|
||
|
|
||
|
if (f2fs_is_pinned_file(inode)) {
|
||
|
block_t sec_blks = CAP_BLKS_PER_SEC(sbi);
|
||
|
block_t sec_len = roundup(map.m_len, sec_blks);
|
||
|
|
||
|
map.m_len = sec_blks;
|
||
|
next_alloc:
|
||
|
if (has_not_enough_free_secs(sbi, 0,
|
||
|
GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
|
||
|
f2fs_down_write(&sbi->gc_lock);
|
||
|
err = f2fs_gc(sbi, &gc_control);
|
||
|
if (err && err != -ENODATA)
|
||
|
goto out_err;
|
||
|
}
|
||
|
|
||
|
f2fs_down_write(&sbi->pin_sem);
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false);
|
||
|
f2fs_unlock_op(sbi);
|
||
|
|
||
|
map.m_seg_type = CURSEG_COLD_DATA_PINNED;
|
||
|
err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
|
||
|
file_dont_truncate(inode);
|
||
|
|
||
|
f2fs_up_write(&sbi->pin_sem);
|
||
|
|
||
|
expanded += map.m_len;
|
||
|
sec_len -= map.m_len;
|
||
|
map.m_lblk += map.m_len;
|
||
|
if (!err && sec_len)
|
||
|
goto next_alloc;
|
||
|
|
||
|
map.m_len = expanded;
|
||
|
} else {
|
||
|
err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
|
||
|
expanded = map.m_len;
|
||
|
}
|
||
|
out_err:
|
||
|
if (err) {
|
||
|
pgoff_t last_off;
|
||
|
|
||
|
if (!expanded)
|
||
|
return err;
|
||
|
|
||
|
last_off = pg_start + expanded - 1;
|
||
|
|
||
|
/* update new size to the failed position */
|
||
|
new_size = (last_off == pg_end) ? offset + len :
|
||
|
(loff_t)(last_off + 1) << PAGE_SHIFT;
|
||
|
} else {
|
||
|
new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
|
||
|
}
|
||
|
|
||
|
if (new_size > i_size_read(inode)) {
|
||
|
if (mode & FALLOC_FL_KEEP_SIZE)
|
||
|
file_set_keep_isize(inode);
|
||
|
else
|
||
|
f2fs_i_size_write(inode, new_size);
|
||
|
}
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static long f2fs_fallocate(struct file *file, int mode,
|
||
|
loff_t offset, loff_t len)
|
||
|
{
|
||
|
struct inode *inode = file_inode(file);
|
||
|
long ret = 0;
|
||
|
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
|
||
|
return -EIO;
|
||
|
if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
|
||
|
return -ENOSPC;
|
||
|
if (!f2fs_is_compress_backend_ready(inode))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
/* f2fs only support ->fallocate for regular file */
|
||
|
if (!S_ISREG(inode->i_mode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (IS_ENCRYPTED(inode) &&
|
||
|
(mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
/*
|
||
|
* Pinned file should not support partial trucation since the block
|
||
|
* can be used by applications.
|
||
|
*/
|
||
|
if ((f2fs_compressed_file(inode) || f2fs_is_pinned_file(inode)) &&
|
||
|
(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
|
||
|
FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
|
||
|
FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
|
||
|
FALLOC_FL_INSERT_RANGE))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
ret = file_modified(file);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
if (mode & FALLOC_FL_PUNCH_HOLE) {
|
||
|
if (offset >= inode->i_size)
|
||
|
goto out;
|
||
|
|
||
|
ret = punch_hole(inode, offset, len);
|
||
|
} else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
|
||
|
ret = f2fs_collapse_range(inode, offset, len);
|
||
|
} else if (mode & FALLOC_FL_ZERO_RANGE) {
|
||
|
ret = f2fs_zero_range(inode, offset, len, mode);
|
||
|
} else if (mode & FALLOC_FL_INSERT_RANGE) {
|
||
|
ret = f2fs_insert_range(inode, offset, len);
|
||
|
} else {
|
||
|
ret = expand_inode_data(inode, offset, len, mode);
|
||
|
}
|
||
|
|
||
|
if (!ret) {
|
||
|
inode->i_mtime = inode->i_ctime = current_time(inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, false);
|
||
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
|
||
|
}
|
||
|
|
||
|
out:
|
||
|
inode_unlock(inode);
|
||
|
|
||
|
trace_f2fs_fallocate(inode, mode, offset, len, ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_release_file(struct inode *inode, struct file *filp)
|
||
|
{
|
||
|
/*
|
||
|
* f2fs_relase_file is called at every close calls. So we should
|
||
|
* not drop any inmemory pages by close called by other process.
|
||
|
*/
|
||
|
if (!(filp->f_mode & FMODE_WRITE) ||
|
||
|
atomic_read(&inode->i_writecount) != 1)
|
||
|
return 0;
|
||
|
|
||
|
inode_lock(inode);
|
||
|
f2fs_abort_atomic_write(inode, true);
|
||
|
inode_unlock(inode);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_file_flush(struct file *file, fl_owner_t id)
|
||
|
{
|
||
|
struct inode *inode = file_inode(file);
|
||
|
|
||
|
/*
|
||
|
* If the process doing a transaction is crashed, we should do
|
||
|
* roll-back. Otherwise, other reader/write can see corrupted database
|
||
|
* until all the writers close its file. Since this should be done
|
||
|
* before dropping file lock, it needs to do in ->flush.
|
||
|
*/
|
||
|
if (F2FS_I(inode)->atomic_write_task == current &&
|
||
|
(current->flags & PF_EXITING)) {
|
||
|
inode_lock(inode);
|
||
|
f2fs_abort_atomic_write(inode, true);
|
||
|
inode_unlock(inode);
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
|
||
|
{
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
u32 masked_flags = fi->i_flags & mask;
|
||
|
|
||
|
/* mask can be shrunk by flags_valid selector */
|
||
|
iflags &= mask;
|
||
|
|
||
|
/* Is it quota file? Do not allow user to mess with it */
|
||
|
if (IS_NOQUOTA(inode))
|
||
|
return -EPERM;
|
||
|
|
||
|
if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
|
||
|
if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
if (!f2fs_empty_dir(inode))
|
||
|
return -ENOTEMPTY;
|
||
|
}
|
||
|
|
||
|
if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
|
||
|
if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
|
||
|
if (masked_flags & F2FS_COMPR_FL) {
|
||
|
if (!f2fs_disable_compressed_file(inode))
|
||
|
return -EINVAL;
|
||
|
} else {
|
||
|
/* try to convert inline_data to support compression */
|
||
|
int err = f2fs_convert_inline_inode(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_sem);
|
||
|
if (!f2fs_may_compress(inode) ||
|
||
|
(S_ISREG(inode->i_mode) &&
|
||
|
F2FS_HAS_BLOCKS(inode))) {
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_sem);
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
err = set_compress_context(inode);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_sem);
|
||
|
|
||
|
if (err)
|
||
|
return err;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
fi->i_flags = iflags | (fi->i_flags & ~mask);
|
||
|
f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
|
||
|
(fi->i_flags & F2FS_NOCOMP_FL));
|
||
|
|
||
|
if (fi->i_flags & F2FS_PROJINHERIT_FL)
|
||
|
set_inode_flag(inode, FI_PROJ_INHERIT);
|
||
|
else
|
||
|
clear_inode_flag(inode, FI_PROJ_INHERIT);
|
||
|
|
||
|
inode->i_ctime = current_time(inode);
|
||
|
f2fs_set_inode_flags(inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
|
||
|
|
||
|
/*
|
||
|
* To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
|
||
|
* for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
|
||
|
* F2FS_GETTABLE_FS_FL. To also make it settable via FS_IOC_SETFLAGS, also add
|
||
|
* its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
|
||
|
*
|
||
|
* Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
|
||
|
* FS_IOC_FSSETXATTR is done by the VFS.
|
||
|
*/
|
||
|
|
||
|
static const struct {
|
||
|
u32 iflag;
|
||
|
u32 fsflag;
|
||
|
} f2fs_fsflags_map[] = {
|
||
|
{ F2FS_COMPR_FL, FS_COMPR_FL },
|
||
|
{ F2FS_SYNC_FL, FS_SYNC_FL },
|
||
|
{ F2FS_IMMUTABLE_FL, FS_IMMUTABLE_FL },
|
||
|
{ F2FS_APPEND_FL, FS_APPEND_FL },
|
||
|
{ F2FS_NODUMP_FL, FS_NODUMP_FL },
|
||
|
{ F2FS_NOATIME_FL, FS_NOATIME_FL },
|
||
|
{ F2FS_NOCOMP_FL, FS_NOCOMP_FL },
|
||
|
{ F2FS_INDEX_FL, FS_INDEX_FL },
|
||
|
{ F2FS_DIRSYNC_FL, FS_DIRSYNC_FL },
|
||
|
{ F2FS_PROJINHERIT_FL, FS_PROJINHERIT_FL },
|
||
|
{ F2FS_CASEFOLD_FL, FS_CASEFOLD_FL },
|
||
|
};
|
||
|
|
||
|
#define F2FS_GETTABLE_FS_FL ( \
|
||
|
FS_COMPR_FL | \
|
||
|
FS_SYNC_FL | \
|
||
|
FS_IMMUTABLE_FL | \
|
||
|
FS_APPEND_FL | \
|
||
|
FS_NODUMP_FL | \
|
||
|
FS_NOATIME_FL | \
|
||
|
FS_NOCOMP_FL | \
|
||
|
FS_INDEX_FL | \
|
||
|
FS_DIRSYNC_FL | \
|
||
|
FS_PROJINHERIT_FL | \
|
||
|
FS_ENCRYPT_FL | \
|
||
|
FS_INLINE_DATA_FL | \
|
||
|
FS_NOCOW_FL | \
|
||
|
FS_VERITY_FL | \
|
||
|
FS_CASEFOLD_FL)
|
||
|
|
||
|
#define F2FS_SETTABLE_FS_FL ( \
|
||
|
FS_COMPR_FL | \
|
||
|
FS_SYNC_FL | \
|
||
|
FS_IMMUTABLE_FL | \
|
||
|
FS_APPEND_FL | \
|
||
|
FS_NODUMP_FL | \
|
||
|
FS_NOATIME_FL | \
|
||
|
FS_NOCOMP_FL | \
|
||
|
FS_DIRSYNC_FL | \
|
||
|
FS_PROJINHERIT_FL | \
|
||
|
FS_CASEFOLD_FL)
|
||
|
|
||
|
/* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
|
||
|
static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
|
||
|
{
|
||
|
u32 fsflags = 0;
|
||
|
int i;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
|
||
|
if (iflags & f2fs_fsflags_map[i].iflag)
|
||
|
fsflags |= f2fs_fsflags_map[i].fsflag;
|
||
|
|
||
|
return fsflags;
|
||
|
}
|
||
|
|
||
|
/* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
|
||
|
static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
|
||
|
{
|
||
|
u32 iflags = 0;
|
||
|
int i;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
|
||
|
if (fsflags & f2fs_fsflags_map[i].fsflag)
|
||
|
iflags |= f2fs_fsflags_map[i].iflag;
|
||
|
|
||
|
return iflags;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
|
||
|
return put_user(inode->i_generation, (int __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_start_atomic_write(struct file *filp)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct user_namespace *mnt_userns = file_mnt_user_ns(filp);
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct inode *pinode;
|
||
|
loff_t isize;
|
||
|
int ret;
|
||
|
|
||
|
if (!inode_owner_or_capable(mnt_userns, inode))
|
||
|
return -EACCES;
|
||
|
|
||
|
if (!S_ISREG(inode->i_mode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (filp->f_flags & O_DIRECT)
|
||
|
return -EINVAL;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (!f2fs_disable_compressed_file(inode)) {
|
||
|
ret = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (f2fs_is_atomic_file(inode))
|
||
|
goto out;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
|
||
|
/*
|
||
|
* Should wait end_io to count F2FS_WB_CP_DATA correctly by
|
||
|
* f2fs_is_atomic_file.
|
||
|
*/
|
||
|
if (get_dirty_pages(inode))
|
||
|
f2fs_warn(sbi, "Unexpected flush for atomic writes: ino=%lu, npages=%u",
|
||
|
inode->i_ino, get_dirty_pages(inode));
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
|
||
|
if (ret) {
|
||
|
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
/* Check if the inode already has a COW inode */
|
||
|
if (fi->cow_inode == NULL) {
|
||
|
/* Create a COW inode for atomic write */
|
||
|
pinode = f2fs_iget(inode->i_sb, fi->i_pino);
|
||
|
if (IS_ERR(pinode)) {
|
||
|
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
ret = PTR_ERR(pinode);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
ret = f2fs_get_tmpfile(mnt_userns, pinode, &fi->cow_inode);
|
||
|
iput(pinode);
|
||
|
if (ret) {
|
||
|
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
set_inode_flag(fi->cow_inode, FI_COW_FILE);
|
||
|
clear_inode_flag(fi->cow_inode, FI_INLINE_DATA);
|
||
|
} else {
|
||
|
/* Reuse the already created COW inode */
|
||
|
ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
|
||
|
if (ret) {
|
||
|
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
goto out;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
f2fs_write_inode(inode, NULL);
|
||
|
|
||
|
isize = i_size_read(inode);
|
||
|
fi->original_i_size = isize;
|
||
|
f2fs_i_size_write(fi->cow_inode, isize);
|
||
|
|
||
|
stat_inc_atomic_inode(inode);
|
||
|
|
||
|
set_inode_flag(inode, FI_ATOMIC_FILE);
|
||
|
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
|
||
|
f2fs_update_time(sbi, REQ_TIME);
|
||
|
fi->atomic_write_task = current;
|
||
|
stat_update_max_atomic_write(inode);
|
||
|
fi->atomic_write_cnt = 0;
|
||
|
out:
|
||
|
inode_unlock(inode);
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_commit_atomic_write(struct file *filp)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct user_namespace *mnt_userns = file_mnt_user_ns(filp);
|
||
|
int ret;
|
||
|
|
||
|
if (!inode_owner_or_capable(mnt_userns, inode))
|
||
|
return -EACCES;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
f2fs_balance_fs(F2FS_I_SB(inode), true);
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (f2fs_is_atomic_file(inode)) {
|
||
|
ret = f2fs_commit_atomic_write(inode);
|
||
|
if (!ret)
|
||
|
ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
|
||
|
|
||
|
f2fs_abort_atomic_write(inode, ret);
|
||
|
} else {
|
||
|
ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
|
||
|
}
|
||
|
|
||
|
inode_unlock(inode);
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_abort_atomic_write(struct file *filp)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct user_namespace *mnt_userns = file_mnt_user_ns(filp);
|
||
|
int ret;
|
||
|
|
||
|
if (!inode_owner_or_capable(mnt_userns, inode))
|
||
|
return -EACCES;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
f2fs_abort_atomic_write(inode, true);
|
||
|
|
||
|
inode_unlock(inode);
|
||
|
|
||
|
mnt_drop_write_file(filp);
|
||
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct super_block *sb = sbi->sb;
|
||
|
__u32 in;
|
||
|
int ret = 0;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (get_user(in, (__u32 __user *)arg))
|
||
|
return -EFAULT;
|
||
|
|
||
|
if (in != F2FS_GOING_DOWN_FULLSYNC) {
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret) {
|
||
|
if (ret == -EROFS) {
|
||
|
ret = 0;
|
||
|
f2fs_stop_checkpoint(sbi, false,
|
||
|
STOP_CP_REASON_SHUTDOWN);
|
||
|
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
|
||
|
trace_f2fs_shutdown(sbi, in, ret);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
switch (in) {
|
||
|
case F2FS_GOING_DOWN_FULLSYNC:
|
||
|
ret = freeze_bdev(sb->s_bdev);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
|
||
|
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
|
||
|
thaw_bdev(sb->s_bdev);
|
||
|
break;
|
||
|
case F2FS_GOING_DOWN_METASYNC:
|
||
|
/* do checkpoint only */
|
||
|
ret = f2fs_sync_fs(sb, 1);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
|
||
|
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
|
||
|
break;
|
||
|
case F2FS_GOING_DOWN_NOSYNC:
|
||
|
f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
|
||
|
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
|
||
|
break;
|
||
|
case F2FS_GOING_DOWN_METAFLUSH:
|
||
|
f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
|
||
|
f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_SHUTDOWN);
|
||
|
set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
|
||
|
break;
|
||
|
case F2FS_GOING_DOWN_NEED_FSCK:
|
||
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
||
|
set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
|
||
|
set_sbi_flag(sbi, SBI_IS_DIRTY);
|
||
|
/* do checkpoint only */
|
||
|
ret = f2fs_sync_fs(sb, 1);
|
||
|
goto out;
|
||
|
default:
|
||
|
ret = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
f2fs_stop_gc_thread(sbi);
|
||
|
f2fs_stop_discard_thread(sbi);
|
||
|
|
||
|
f2fs_drop_discard_cmd(sbi);
|
||
|
clear_opt(sbi, DISCARD);
|
||
|
|
||
|
f2fs_update_time(sbi, REQ_TIME);
|
||
|
out:
|
||
|
if (in != F2FS_GOING_DOWN_FULLSYNC)
|
||
|
mnt_drop_write_file(filp);
|
||
|
|
||
|
trace_f2fs_shutdown(sbi, in, ret);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct super_block *sb = inode->i_sb;
|
||
|
struct fstrim_range range;
|
||
|
int ret;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (!f2fs_hw_support_discard(F2FS_SB(sb)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (copy_from_user(&range, (struct fstrim_range __user *)arg,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
range.minlen = max((unsigned int)range.minlen,
|
||
|
bdev_discard_granularity(sb->s_bdev));
|
||
|
ret = f2fs_trim_fs(F2FS_SB(sb), &range);
|
||
|
mnt_drop_write_file(filp);
|
||
|
if (ret < 0)
|
||
|
return ret;
|
||
|
|
||
|
if (copy_to_user((struct fstrim_range __user *)arg, &range,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static bool uuid_is_nonzero(__u8 u[16])
|
||
|
{
|
||
|
int i;
|
||
|
|
||
|
for (i = 0; i < 16; i++)
|
||
|
if (u[i])
|
||
|
return true;
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
|
||
|
|
||
|
return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
u8 encrypt_pw_salt[16];
|
||
|
int err;
|
||
|
|
||
|
if (!f2fs_sb_has_encrypt(sbi))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
err = mnt_want_write_file(filp);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
f2fs_down_write(&sbi->sb_lock);
|
||
|
|
||
|
if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
|
||
|
goto got_it;
|
||
|
|
||
|
/* update superblock with uuid */
|
||
|
generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
|
||
|
|
||
|
err = f2fs_commit_super(sbi, false);
|
||
|
if (err) {
|
||
|
/* undo new data */
|
||
|
memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
|
||
|
goto out_err;
|
||
|
}
|
||
|
got_it:
|
||
|
memcpy(encrypt_pw_salt, sbi->raw_super->encrypt_pw_salt, 16);
|
||
|
out_err:
|
||
|
f2fs_up_write(&sbi->sb_lock);
|
||
|
mnt_drop_write_file(filp);
|
||
|
|
||
|
if (!err && copy_to_user((__u8 __user *)arg, encrypt_pw_salt, 16))
|
||
|
err = -EFAULT;
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
|
||
|
unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fscrypt_ioctl_add_key(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
|
||
|
unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_encryption_key_status(struct file *filp,
|
||
|
unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_gc_control gc_control = { .victim_segno = NULL_SEGNO,
|
||
|
.no_bg_gc = false,
|
||
|
.should_migrate_blocks = false,
|
||
|
.nr_free_secs = 0 };
|
||
|
__u32 sync;
|
||
|
int ret;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (get_user(sync, (__u32 __user *)arg))
|
||
|
return -EFAULT;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (!sync) {
|
||
|
if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
|
||
|
ret = -EBUSY;
|
||
|
goto out;
|
||
|
}
|
||
|
} else {
|
||
|
f2fs_down_write(&sbi->gc_lock);
|
||
|
}
|
||
|
|
||
|
gc_control.init_gc_type = sync ? FG_GC : BG_GC;
|
||
|
gc_control.err_gc_skipped = sync;
|
||
|
ret = f2fs_gc(sbi, &gc_control);
|
||
|
out:
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
|
||
|
struct f2fs_gc_control gc_control = {
|
||
|
.init_gc_type = range->sync ? FG_GC : BG_GC,
|
||
|
.no_bg_gc = false,
|
||
|
.should_migrate_blocks = false,
|
||
|
.err_gc_skipped = range->sync,
|
||
|
.nr_free_secs = 0 };
|
||
|
u64 end;
|
||
|
int ret;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
end = range->start + range->len;
|
||
|
if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
|
||
|
end >= MAX_BLKADDR(sbi))
|
||
|
return -EINVAL;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
do_more:
|
||
|
if (!range->sync) {
|
||
|
if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
|
||
|
ret = -EBUSY;
|
||
|
goto out;
|
||
|
}
|
||
|
} else {
|
||
|
f2fs_down_write(&sbi->gc_lock);
|
||
|
}
|
||
|
|
||
|
gc_control.victim_segno = GET_SEGNO(sbi, range->start);
|
||
|
ret = f2fs_gc(sbi, &gc_control);
|
||
|
if (ret) {
|
||
|
if (ret == -EBUSY)
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
range->start += CAP_BLKS_PER_SEC(sbi);
|
||
|
if (range->start <= end)
|
||
|
goto do_more;
|
||
|
out:
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct f2fs_gc_range range;
|
||
|
|
||
|
if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
return __f2fs_ioc_gc_range(filp, &range);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
int ret;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
|
||
|
f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
ret = f2fs_sync_fs(sbi->sb, 1);
|
||
|
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
|
||
|
struct file *filp,
|
||
|
struct f2fs_defragment *range)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_map_blocks map = { .m_next_extent = NULL,
|
||
|
.m_seg_type = NO_CHECK_TYPE,
|
||
|
.m_may_create = false };
|
||
|
struct extent_info ei = {0, };
|
||
|
pgoff_t pg_start, pg_end, next_pgofs;
|
||
|
unsigned int blk_per_seg = sbi->blocks_per_seg;
|
||
|
unsigned int total = 0, sec_num;
|
||
|
block_t blk_end = 0;
|
||
|
bool fragmented = false;
|
||
|
int err;
|
||
|
|
||
|
pg_start = range->start >> PAGE_SHIFT;
|
||
|
pg_end = (range->start + range->len) >> PAGE_SHIFT;
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
|
||
|
err = -EINVAL;
|
||
|
goto unlock_out;
|
||
|
}
|
||
|
|
||
|
/* if in-place-update policy is enabled, don't waste time here */
|
||
|
set_inode_flag(inode, FI_OPU_WRITE);
|
||
|
if (f2fs_should_update_inplace(inode, NULL)) {
|
||
|
err = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
/* writeback all dirty pages in the range */
|
||
|
err = filemap_write_and_wait_range(inode->i_mapping, range->start,
|
||
|
range->start + range->len - 1);
|
||
|
if (err)
|
||
|
goto out;
|
||
|
|
||
|
/*
|
||
|
* lookup mapping info in extent cache, skip defragmenting if physical
|
||
|
* block addresses are continuous.
|
||
|
*/
|
||
|
if (f2fs_lookup_read_extent_cache(inode, pg_start, &ei)) {
|
||
|
if (ei.fofs + ei.len >= pg_end)
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
map.m_lblk = pg_start;
|
||
|
map.m_next_pgofs = &next_pgofs;
|
||
|
|
||
|
/*
|
||
|
* lookup mapping info in dnode page cache, skip defragmenting if all
|
||
|
* physical block addresses are continuous even if there are hole(s)
|
||
|
* in logical blocks.
|
||
|
*/
|
||
|
while (map.m_lblk < pg_end) {
|
||
|
map.m_len = pg_end - map.m_lblk;
|
||
|
err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
|
||
|
if (err)
|
||
|
goto out;
|
||
|
|
||
|
if (!(map.m_flags & F2FS_MAP_FLAGS)) {
|
||
|
map.m_lblk = next_pgofs;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
if (blk_end && blk_end != map.m_pblk)
|
||
|
fragmented = true;
|
||
|
|
||
|
/* record total count of block that we're going to move */
|
||
|
total += map.m_len;
|
||
|
|
||
|
blk_end = map.m_pblk + map.m_len;
|
||
|
|
||
|
map.m_lblk += map.m_len;
|
||
|
}
|
||
|
|
||
|
if (!fragmented) {
|
||
|
total = 0;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
sec_num = DIV_ROUND_UP(total, CAP_BLKS_PER_SEC(sbi));
|
||
|
|
||
|
/*
|
||
|
* make sure there are enough free section for LFS allocation, this can
|
||
|
* avoid defragment running in SSR mode when free section are allocated
|
||
|
* intensively
|
||
|
*/
|
||
|
if (has_not_enough_free_secs(sbi, 0, sec_num)) {
|
||
|
err = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
map.m_lblk = pg_start;
|
||
|
map.m_len = pg_end - pg_start;
|
||
|
total = 0;
|
||
|
|
||
|
while (map.m_lblk < pg_end) {
|
||
|
pgoff_t idx;
|
||
|
int cnt = 0;
|
||
|
|
||
|
do_map:
|
||
|
map.m_len = pg_end - map.m_lblk;
|
||
|
err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
|
||
|
if (err)
|
||
|
goto clear_out;
|
||
|
|
||
|
if (!(map.m_flags & F2FS_MAP_FLAGS)) {
|
||
|
map.m_lblk = next_pgofs;
|
||
|
goto check;
|
||
|
}
|
||
|
|
||
|
set_inode_flag(inode, FI_SKIP_WRITES);
|
||
|
|
||
|
idx = map.m_lblk;
|
||
|
while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
|
||
|
struct page *page;
|
||
|
|
||
|
page = f2fs_get_lock_data_page(inode, idx, true);
|
||
|
if (IS_ERR(page)) {
|
||
|
err = PTR_ERR(page);
|
||
|
goto clear_out;
|
||
|
}
|
||
|
|
||
|
set_page_dirty(page);
|
||
|
set_page_private_gcing(page);
|
||
|
f2fs_put_page(page, 1);
|
||
|
|
||
|
idx++;
|
||
|
cnt++;
|
||
|
total++;
|
||
|
}
|
||
|
|
||
|
map.m_lblk = idx;
|
||
|
check:
|
||
|
if (map.m_lblk < pg_end && cnt < blk_per_seg)
|
||
|
goto do_map;
|
||
|
|
||
|
clear_inode_flag(inode, FI_SKIP_WRITES);
|
||
|
|
||
|
err = filemap_fdatawrite(inode->i_mapping);
|
||
|
if (err)
|
||
|
goto out;
|
||
|
}
|
||
|
clear_out:
|
||
|
clear_inode_flag(inode, FI_SKIP_WRITES);
|
||
|
out:
|
||
|
clear_inode_flag(inode, FI_OPU_WRITE);
|
||
|
unlock_out:
|
||
|
inode_unlock(inode);
|
||
|
if (!err)
|
||
|
range->len = (u64)total << PAGE_SHIFT;
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_defragment range;
|
||
|
int err;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
/* verify alignment of offset & size */
|
||
|
if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (unlikely((range.start + range.len) >> PAGE_SHIFT >
|
||
|
max_file_blocks(inode)))
|
||
|
return -EINVAL;
|
||
|
|
||
|
err = mnt_want_write_file(filp);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
err = f2fs_defragment_range(sbi, filp, &range);
|
||
|
mnt_drop_write_file(filp);
|
||
|
|
||
|
f2fs_update_time(sbi, REQ_TIME);
|
||
|
if (err < 0)
|
||
|
return err;
|
||
|
|
||
|
if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
|
||
|
struct file *file_out, loff_t pos_out, size_t len)
|
||
|
{
|
||
|
struct inode *src = file_inode(file_in);
|
||
|
struct inode *dst = file_inode(file_out);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(src);
|
||
|
size_t olen = len, dst_max_i_size = 0;
|
||
|
size_t dst_osize;
|
||
|
int ret;
|
||
|
|
||
|
if (file_in->f_path.mnt != file_out->f_path.mnt ||
|
||
|
src->i_sb != dst->i_sb)
|
||
|
return -EXDEV;
|
||
|
|
||
|
if (unlikely(f2fs_readonly(src->i_sb)))
|
||
|
return -EROFS;
|
||
|
|
||
|
if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (pos_out < 0 || pos_in < 0)
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (src == dst) {
|
||
|
if (pos_in == pos_out)
|
||
|
return 0;
|
||
|
if (pos_out > pos_in && pos_out < pos_in + len)
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
inode_lock(src);
|
||
|
if (src != dst) {
|
||
|
ret = -EBUSY;
|
||
|
if (!inode_trylock(dst))
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
ret = -EINVAL;
|
||
|
if (pos_in + len > src->i_size || pos_in + len < pos_in)
|
||
|
goto out_unlock;
|
||
|
if (len == 0)
|
||
|
olen = len = src->i_size - pos_in;
|
||
|
if (pos_in + len == src->i_size)
|
||
|
len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
|
||
|
if (len == 0) {
|
||
|
ret = 0;
|
||
|
goto out_unlock;
|
||
|
}
|
||
|
|
||
|
dst_osize = dst->i_size;
|
||
|
if (pos_out + olen > dst->i_size)
|
||
|
dst_max_i_size = pos_out + olen;
|
||
|
|
||
|
/* verify the end result is block aligned */
|
||
|
if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
|
||
|
!IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
|
||
|
!IS_ALIGNED(pos_out, F2FS_BLKSIZE))
|
||
|
goto out_unlock;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(src);
|
||
|
if (ret)
|
||
|
goto out_unlock;
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(dst);
|
||
|
if (ret)
|
||
|
goto out_unlock;
|
||
|
|
||
|
/* write out all dirty pages from offset */
|
||
|
ret = filemap_write_and_wait_range(src->i_mapping,
|
||
|
pos_in, pos_in + len);
|
||
|
if (ret)
|
||
|
goto out_unlock;
|
||
|
|
||
|
ret = filemap_write_and_wait_range(dst->i_mapping,
|
||
|
pos_out, pos_out + len);
|
||
|
if (ret)
|
||
|
goto out_unlock;
|
||
|
|
||
|
f2fs_balance_fs(sbi, true);
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
|
||
|
if (src != dst) {
|
||
|
ret = -EBUSY;
|
||
|
if (!f2fs_down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
|
||
|
goto out_src;
|
||
|
}
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
|
||
|
pos_out >> F2FS_BLKSIZE_BITS,
|
||
|
len >> F2FS_BLKSIZE_BITS, false);
|
||
|
|
||
|
if (!ret) {
|
||
|
if (dst_max_i_size)
|
||
|
f2fs_i_size_write(dst, dst_max_i_size);
|
||
|
else if (dst_osize != dst->i_size)
|
||
|
f2fs_i_size_write(dst, dst_osize);
|
||
|
}
|
||
|
f2fs_unlock_op(sbi);
|
||
|
|
||
|
if (src != dst)
|
||
|
f2fs_up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
|
||
|
out_src:
|
||
|
f2fs_up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
|
||
|
out_unlock:
|
||
|
if (src != dst)
|
||
|
inode_unlock(dst);
|
||
|
out:
|
||
|
inode_unlock(src);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int __f2fs_ioc_move_range(struct file *filp,
|
||
|
struct f2fs_move_range *range)
|
||
|
{
|
||
|
struct fd dst;
|
||
|
int err;
|
||
|
|
||
|
if (!(filp->f_mode & FMODE_READ) ||
|
||
|
!(filp->f_mode & FMODE_WRITE))
|
||
|
return -EBADF;
|
||
|
|
||
|
dst = fdget(range->dst_fd);
|
||
|
if (!dst.file)
|
||
|
return -EBADF;
|
||
|
|
||
|
if (!(dst.file->f_mode & FMODE_WRITE)) {
|
||
|
err = -EBADF;
|
||
|
goto err_out;
|
||
|
}
|
||
|
|
||
|
err = mnt_want_write_file(filp);
|
||
|
if (err)
|
||
|
goto err_out;
|
||
|
|
||
|
err = f2fs_move_file_range(filp, range->pos_in, dst.file,
|
||
|
range->pos_out, range->len);
|
||
|
|
||
|
mnt_drop_write_file(filp);
|
||
|
err_out:
|
||
|
fdput(dst);
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct f2fs_move_range range;
|
||
|
|
||
|
if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
return __f2fs_ioc_move_range(filp, &range);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct sit_info *sm = SIT_I(sbi);
|
||
|
unsigned int start_segno = 0, end_segno = 0;
|
||
|
unsigned int dev_start_segno = 0, dev_end_segno = 0;
|
||
|
struct f2fs_flush_device range;
|
||
|
struct f2fs_gc_control gc_control = {
|
||
|
.init_gc_type = FG_GC,
|
||
|
.should_migrate_blocks = true,
|
||
|
.err_gc_skipped = true,
|
||
|
.nr_free_secs = 0 };
|
||
|
int ret;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
|
||
|
__is_large_section(sbi)) {
|
||
|
f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
|
||
|
range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (range.dev_num != 0)
|
||
|
dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
|
||
|
dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
|
||
|
|
||
|
start_segno = sm->last_victim[FLUSH_DEVICE];
|
||
|
if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
|
||
|
start_segno = dev_start_segno;
|
||
|
end_segno = min(start_segno + range.segments, dev_end_segno);
|
||
|
|
||
|
while (start_segno < end_segno) {
|
||
|
if (!f2fs_down_write_trylock(&sbi->gc_lock)) {
|
||
|
ret = -EBUSY;
|
||
|
goto out;
|
||
|
}
|
||
|
sm->last_victim[GC_CB] = end_segno + 1;
|
||
|
sm->last_victim[GC_GREEDY] = end_segno + 1;
|
||
|
sm->last_victim[ALLOC_NEXT] = end_segno + 1;
|
||
|
|
||
|
gc_control.victim_segno = start_segno;
|
||
|
ret = f2fs_gc(sbi, &gc_control);
|
||
|
if (ret == -EAGAIN)
|
||
|
ret = 0;
|
||
|
else if (ret < 0)
|
||
|
break;
|
||
|
start_segno++;
|
||
|
}
|
||
|
out:
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
|
||
|
|
||
|
/* Must validate to set it with SQLite behavior in Android. */
|
||
|
sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
|
||
|
|
||
|
return put_user(sb_feature, (u32 __user *)arg);
|
||
|
}
|
||
|
|
||
|
#ifdef CONFIG_QUOTA
|
||
|
int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
|
||
|
{
|
||
|
struct dquot *transfer_to[MAXQUOTAS] = {};
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct super_block *sb = sbi->sb;
|
||
|
int err;
|
||
|
|
||
|
transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
|
||
|
if (IS_ERR(transfer_to[PRJQUOTA]))
|
||
|
return PTR_ERR(transfer_to[PRJQUOTA]);
|
||
|
|
||
|
err = __dquot_transfer(inode, transfer_to);
|
||
|
if (err)
|
||
|
set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
|
||
|
dqput(transfer_to[PRJQUOTA]);
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
|
||
|
{
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_inode *ri = NULL;
|
||
|
kprojid_t kprojid;
|
||
|
int err;
|
||
|
|
||
|
if (!f2fs_sb_has_project_quota(sbi)) {
|
||
|
if (projid != F2FS_DEF_PROJID)
|
||
|
return -EOPNOTSUPP;
|
||
|
else
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (!f2fs_has_extra_attr(inode))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
|
||
|
|
||
|
if (projid_eq(kprojid, fi->i_projid))
|
||
|
return 0;
|
||
|
|
||
|
err = -EPERM;
|
||
|
/* Is it quota file? Do not allow user to mess with it */
|
||
|
if (IS_NOQUOTA(inode))
|
||
|
return err;
|
||
|
|
||
|
if (!F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
|
||
|
return -EOVERFLOW;
|
||
|
|
||
|
err = f2fs_dquot_initialize(inode);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
f2fs_lock_op(sbi);
|
||
|
err = f2fs_transfer_project_quota(inode, kprojid);
|
||
|
if (err)
|
||
|
goto out_unlock;
|
||
|
|
||
|
fi->i_projid = kprojid;
|
||
|
inode->i_ctime = current_time(inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
out_unlock:
|
||
|
f2fs_unlock_op(sbi);
|
||
|
return err;
|
||
|
}
|
||
|
#else
|
||
|
int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
|
||
|
{
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
|
||
|
{
|
||
|
if (projid != F2FS_DEF_PROJID)
|
||
|
return -EOPNOTSUPP;
|
||
|
return 0;
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
|
||
|
{
|
||
|
struct inode *inode = d_inode(dentry);
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
|
||
|
|
||
|
if (IS_ENCRYPTED(inode))
|
||
|
fsflags |= FS_ENCRYPT_FL;
|
||
|
if (IS_VERITY(inode))
|
||
|
fsflags |= FS_VERITY_FL;
|
||
|
if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
|
||
|
fsflags |= FS_INLINE_DATA_FL;
|
||
|
if (is_inode_flag_set(inode, FI_PIN_FILE))
|
||
|
fsflags |= FS_NOCOW_FL;
|
||
|
|
||
|
fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
|
||
|
|
||
|
if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
|
||
|
fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int f2fs_fileattr_set(struct user_namespace *mnt_userns,
|
||
|
struct dentry *dentry, struct fileattr *fa)
|
||
|
{
|
||
|
struct inode *inode = d_inode(dentry);
|
||
|
u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
|
||
|
u32 iflags;
|
||
|
int err;
|
||
|
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
|
||
|
return -EIO;
|
||
|
if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
|
||
|
return -ENOSPC;
|
||
|
if (fsflags & ~F2FS_GETTABLE_FS_FL)
|
||
|
return -EOPNOTSUPP;
|
||
|
fsflags &= F2FS_SETTABLE_FS_FL;
|
||
|
if (!fa->flags_valid)
|
||
|
mask &= FS_COMMON_FL;
|
||
|
|
||
|
iflags = f2fs_fsflags_to_iflags(fsflags);
|
||
|
if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
|
||
|
if (!err)
|
||
|
err = f2fs_ioc_setproject(inode, fa->fsx_projid);
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
int f2fs_pin_file_control(struct inode *inode, bool inc)
|
||
|
{
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
|
||
|
/* Use i_gc_failures for normal file as a risk signal. */
|
||
|
if (inc)
|
||
|
f2fs_i_gc_failures_write(inode,
|
||
|
fi->i_gc_failures[GC_FAILURE_PIN] + 1);
|
||
|
|
||
|
if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
|
||
|
f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
|
||
|
__func__, inode->i_ino,
|
||
|
fi->i_gc_failures[GC_FAILURE_PIN]);
|
||
|
clear_inode_flag(inode, FI_PIN_FILE);
|
||
|
return -EAGAIN;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
__u32 pin;
|
||
|
int ret = 0;
|
||
|
|
||
|
if (get_user(pin, (__u32 __user *)arg))
|
||
|
return -EFAULT;
|
||
|
|
||
|
if (!S_ISREG(inode->i_mode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (f2fs_readonly(F2FS_I_SB(inode)->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (!pin) {
|
||
|
clear_inode_flag(inode, FI_PIN_FILE);
|
||
|
f2fs_i_gc_failures_write(inode, 0);
|
||
|
goto done;
|
||
|
}
|
||
|
|
||
|
if (f2fs_should_update_outplace(inode, NULL)) {
|
||
|
ret = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (f2fs_pin_file_control(inode, false)) {
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
if (!f2fs_disable_compressed_file(inode)) {
|
||
|
ret = -EOPNOTSUPP;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
set_inode_flag(inode, FI_PIN_FILE);
|
||
|
ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
|
||
|
done:
|
||
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
|
||
|
out:
|
||
|
inode_unlock(inode);
|
||
|
mnt_drop_write_file(filp);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
__u32 pin = 0;
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_PIN_FILE))
|
||
|
pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
|
||
|
return put_user(pin, (u32 __user *)arg);
|
||
|
}
|
||
|
|
||
|
int f2fs_precache_extents(struct inode *inode)
|
||
|
{
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
struct f2fs_map_blocks map;
|
||
|
pgoff_t m_next_extent;
|
||
|
loff_t end;
|
||
|
int err;
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_NO_EXTENT))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
map.m_lblk = 0;
|
||
|
map.m_next_pgofs = NULL;
|
||
|
map.m_next_extent = &m_next_extent;
|
||
|
map.m_seg_type = NO_CHECK_TYPE;
|
||
|
map.m_may_create = false;
|
||
|
end = max_file_blocks(inode);
|
||
|
|
||
|
while (map.m_lblk < end) {
|
||
|
map.m_len = end - map.m_lblk;
|
||
|
|
||
|
f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
|
||
|
f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
|
||
|
if (err)
|
||
|
return err;
|
||
|
|
||
|
map.m_lblk = m_next_extent;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
return f2fs_precache_extents(file_inode(filp));
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
|
||
|
__u64 block_count;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
if (copy_from_user(&block_count, (void __user *)arg,
|
||
|
sizeof(block_count)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
return f2fs_resize_fs(filp, block_count);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
|
||
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
|
||
|
|
||
|
if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
|
||
|
f2fs_warn(F2FS_I_SB(inode),
|
||
|
"Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem",
|
||
|
inode->i_ino);
|
||
|
return -EOPNOTSUPP;
|
||
|
}
|
||
|
|
||
|
return fsverity_ioctl_enable(filp, (const void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fsverity_ioctl_measure(filp, (void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
char *vbuf;
|
||
|
int count;
|
||
|
int err = 0;
|
||
|
|
||
|
vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
|
||
|
if (!vbuf)
|
||
|
return -ENOMEM;
|
||
|
|
||
|
f2fs_down_read(&sbi->sb_lock);
|
||
|
count = utf16s_to_utf8s(sbi->raw_super->volume_name,
|
||
|
ARRAY_SIZE(sbi->raw_super->volume_name),
|
||
|
UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
|
||
|
f2fs_up_read(&sbi->sb_lock);
|
||
|
|
||
|
if (copy_to_user((char __user *)arg, vbuf,
|
||
|
min(FSLABEL_MAX, count)))
|
||
|
err = -EFAULT;
|
||
|
|
||
|
kfree(vbuf);
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
char *vbuf;
|
||
|
int err = 0;
|
||
|
|
||
|
if (!capable(CAP_SYS_ADMIN))
|
||
|
return -EPERM;
|
||
|
|
||
|
vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
|
||
|
if (IS_ERR(vbuf))
|
||
|
return PTR_ERR(vbuf);
|
||
|
|
||
|
err = mnt_want_write_file(filp);
|
||
|
if (err)
|
||
|
goto out;
|
||
|
|
||
|
f2fs_down_write(&sbi->sb_lock);
|
||
|
|
||
|
memset(sbi->raw_super->volume_name, 0,
|
||
|
sizeof(sbi->raw_super->volume_name));
|
||
|
utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
|
||
|
sbi->raw_super->volume_name,
|
||
|
ARRAY_SIZE(sbi->raw_super->volume_name));
|
||
|
|
||
|
err = f2fs_commit_super(sbi, false);
|
||
|
|
||
|
f2fs_up_write(&sbi->sb_lock);
|
||
|
|
||
|
mnt_drop_write_file(filp);
|
||
|
out:
|
||
|
kfree(vbuf);
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
__u64 blocks;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (!f2fs_compressed_file(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
|
||
|
return put_user(blocks, (u64 __user *)arg);
|
||
|
}
|
||
|
|
||
|
static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
||
|
unsigned int released_blocks = 0;
|
||
|
int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
|
||
|
block_t blkaddr;
|
||
|
int i;
|
||
|
|
||
|
for (i = 0; i < count; i++) {
|
||
|
blkaddr = data_blkaddr(dn->inode, dn->node_page,
|
||
|
dn->ofs_in_node + i);
|
||
|
|
||
|
if (!__is_valid_data_blkaddr(blkaddr))
|
||
|
continue;
|
||
|
if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
|
||
|
DATA_GENERIC_ENHANCE))) {
|
||
|
f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
|
||
|
return -EFSCORRUPTED;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
while (count) {
|
||
|
int compr_blocks = 0;
|
||
|
|
||
|
for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
|
||
|
blkaddr = f2fs_data_blkaddr(dn);
|
||
|
|
||
|
if (i == 0) {
|
||
|
if (blkaddr == COMPRESS_ADDR)
|
||
|
continue;
|
||
|
dn->ofs_in_node += cluster_size;
|
||
|
goto next;
|
||
|
}
|
||
|
|
||
|
if (__is_valid_data_blkaddr(blkaddr))
|
||
|
compr_blocks++;
|
||
|
|
||
|
if (blkaddr != NEW_ADDR)
|
||
|
continue;
|
||
|
|
||
|
dn->data_blkaddr = NULL_ADDR;
|
||
|
f2fs_set_data_blkaddr(dn);
|
||
|
}
|
||
|
|
||
|
f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
|
||
|
dec_valid_block_count(sbi, dn->inode,
|
||
|
cluster_size - compr_blocks);
|
||
|
|
||
|
released_blocks += cluster_size - compr_blocks;
|
||
|
next:
|
||
|
count -= cluster_size;
|
||
|
}
|
||
|
|
||
|
return released_blocks;
|
||
|
}
|
||
|
|
||
|
static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
pgoff_t page_idx = 0, last_idx;
|
||
|
unsigned int released_blocks = 0;
|
||
|
int ret;
|
||
|
int writecount;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (!f2fs_compressed_file(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
f2fs_balance_fs(F2FS_I_SB(inode), true);
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
writecount = atomic_read(&inode->i_writecount);
|
||
|
if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
|
||
|
(!(filp->f_mode & FMODE_WRITE) && writecount)) {
|
||
|
ret = -EBUSY;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
|
||
|
ret = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
set_inode_flag(inode, FI_COMPRESS_RELEASED);
|
||
|
inode->i_ctime = current_time(inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
|
||
|
if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
|
||
|
goto out;
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
|
||
|
last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
|
||
|
|
||
|
while (page_idx < last_idx) {
|
||
|
struct dnode_of_data dn;
|
||
|
pgoff_t end_offset, count;
|
||
|
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
|
||
|
if (ret) {
|
||
|
if (ret == -ENOENT) {
|
||
|
page_idx = f2fs_get_next_page_offset(&dn,
|
||
|
page_idx);
|
||
|
ret = 0;
|
||
|
continue;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
|
||
|
count = round_up(count, F2FS_I(inode)->i_cluster_size);
|
||
|
|
||
|
ret = release_compress_blocks(&dn, count);
|
||
|
|
||
|
f2fs_put_dnode(&dn);
|
||
|
|
||
|
if (ret < 0)
|
||
|
break;
|
||
|
|
||
|
page_idx += count;
|
||
|
released_blocks += ret;
|
||
|
}
|
||
|
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
out:
|
||
|
inode_unlock(inode);
|
||
|
|
||
|
mnt_drop_write_file(filp);
|
||
|
|
||
|
if (ret >= 0) {
|
||
|
ret = put_user(released_blocks, (u64 __user *)arg);
|
||
|
} else if (released_blocks &&
|
||
|
atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
|
||
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
||
|
f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
|
||
|
"iblocks=%llu, released=%u, compr_blocks=%u, "
|
||
|
"run fsck to fix.",
|
||
|
__func__, inode->i_ino, inode->i_blocks,
|
||
|
released_blocks,
|
||
|
atomic_read(&F2FS_I(inode)->i_compr_blocks));
|
||
|
}
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
|
||
|
unsigned int reserved_blocks = 0;
|
||
|
int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
|
||
|
block_t blkaddr;
|
||
|
int i;
|
||
|
|
||
|
for (i = 0; i < count; i++) {
|
||
|
blkaddr = data_blkaddr(dn->inode, dn->node_page,
|
||
|
dn->ofs_in_node + i);
|
||
|
|
||
|
if (!__is_valid_data_blkaddr(blkaddr))
|
||
|
continue;
|
||
|
if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
|
||
|
DATA_GENERIC_ENHANCE))) {
|
||
|
f2fs_handle_error(sbi, ERROR_INVALID_BLKADDR);
|
||
|
return -EFSCORRUPTED;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
while (count) {
|
||
|
int compr_blocks = 0;
|
||
|
blkcnt_t reserved;
|
||
|
int ret;
|
||
|
|
||
|
for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
|
||
|
blkaddr = f2fs_data_blkaddr(dn);
|
||
|
|
||
|
if (i == 0) {
|
||
|
if (blkaddr == COMPRESS_ADDR)
|
||
|
continue;
|
||
|
dn->ofs_in_node += cluster_size;
|
||
|
goto next;
|
||
|
}
|
||
|
|
||
|
if (__is_valid_data_blkaddr(blkaddr)) {
|
||
|
compr_blocks++;
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
dn->data_blkaddr = NEW_ADDR;
|
||
|
f2fs_set_data_blkaddr(dn);
|
||
|
}
|
||
|
|
||
|
reserved = cluster_size - compr_blocks;
|
||
|
ret = inc_valid_block_count(sbi, dn->inode, &reserved);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (reserved != cluster_size - compr_blocks)
|
||
|
return -ENOSPC;
|
||
|
|
||
|
f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
|
||
|
|
||
|
reserved_blocks += reserved;
|
||
|
next:
|
||
|
count -= cluster_size;
|
||
|
}
|
||
|
|
||
|
return reserved_blocks;
|
||
|
}
|
||
|
|
||
|
static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
pgoff_t page_idx = 0, last_idx;
|
||
|
unsigned int reserved_blocks = 0;
|
||
|
int ret;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (!f2fs_compressed_file(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (f2fs_readonly(sbi->sb))
|
||
|
return -EROFS;
|
||
|
|
||
|
ret = mnt_want_write_file(filp);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
|
||
|
goto out;
|
||
|
|
||
|
f2fs_balance_fs(F2FS_I_SB(inode), true);
|
||
|
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (!is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
|
||
|
ret = -EINVAL;
|
||
|
goto unlock_inode;
|
||
|
}
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
|
||
|
last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
|
||
|
|
||
|
while (page_idx < last_idx) {
|
||
|
struct dnode_of_data dn;
|
||
|
pgoff_t end_offset, count;
|
||
|
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
|
||
|
if (ret) {
|
||
|
if (ret == -ENOENT) {
|
||
|
page_idx = f2fs_get_next_page_offset(&dn,
|
||
|
page_idx);
|
||
|
ret = 0;
|
||
|
continue;
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
|
||
|
count = round_up(count, F2FS_I(inode)->i_cluster_size);
|
||
|
|
||
|
ret = reserve_compress_blocks(&dn, count);
|
||
|
|
||
|
f2fs_put_dnode(&dn);
|
||
|
|
||
|
if (ret < 0)
|
||
|
break;
|
||
|
|
||
|
page_idx += count;
|
||
|
reserved_blocks += ret;
|
||
|
}
|
||
|
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
|
||
|
if (ret >= 0) {
|
||
|
clear_inode_flag(inode, FI_COMPRESS_RELEASED);
|
||
|
inode->i_ctime = current_time(inode);
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
}
|
||
|
unlock_inode:
|
||
|
inode_unlock(inode);
|
||
|
out:
|
||
|
mnt_drop_write_file(filp);
|
||
|
|
||
|
if (ret >= 0) {
|
||
|
ret = put_user(reserved_blocks, (u64 __user *)arg);
|
||
|
} else if (reserved_blocks &&
|
||
|
atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
|
||
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
||
|
f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
|
||
|
"iblocks=%llu, reserved=%u, compr_blocks=%u, "
|
||
|
"run fsck to fix.",
|
||
|
__func__, inode->i_ino, inode->i_blocks,
|
||
|
reserved_blocks,
|
||
|
atomic_read(&F2FS_I(inode)->i_compr_blocks));
|
||
|
}
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
|
||
|
pgoff_t off, block_t block, block_t len, u32 flags)
|
||
|
{
|
||
|
sector_t sector = SECTOR_FROM_BLOCK(block);
|
||
|
sector_t nr_sects = SECTOR_FROM_BLOCK(len);
|
||
|
int ret = 0;
|
||
|
|
||
|
if (flags & F2FS_TRIM_FILE_DISCARD) {
|
||
|
if (bdev_max_secure_erase_sectors(bdev))
|
||
|
ret = blkdev_issue_secure_erase(bdev, sector, nr_sects,
|
||
|
GFP_NOFS);
|
||
|
else
|
||
|
ret = blkdev_issue_discard(bdev, sector, nr_sects,
|
||
|
GFP_NOFS);
|
||
|
}
|
||
|
|
||
|
if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
|
||
|
if (IS_ENCRYPTED(inode))
|
||
|
ret = fscrypt_zeroout_range(inode, off, block, len);
|
||
|
else
|
||
|
ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
|
||
|
GFP_NOFS, 0);
|
||
|
}
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct address_space *mapping = inode->i_mapping;
|
||
|
struct block_device *prev_bdev = NULL;
|
||
|
struct f2fs_sectrim_range range;
|
||
|
pgoff_t index, pg_end, prev_index = 0;
|
||
|
block_t prev_block = 0, len = 0;
|
||
|
loff_t end_addr;
|
||
|
bool to_end = false;
|
||
|
int ret = 0;
|
||
|
|
||
|
if (!(filp->f_mode & FMODE_WRITE))
|
||
|
return -EBADF;
|
||
|
|
||
|
if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
|
||
|
sizeof(range)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
|
||
|
!S_ISREG(inode->i_mode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
|
||
|
!f2fs_hw_support_discard(sbi)) ||
|
||
|
((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
|
||
|
IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
file_start_write(filp);
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
|
||
|
range.start >= inode->i_size) {
|
||
|
ret = -EINVAL;
|
||
|
goto err;
|
||
|
}
|
||
|
|
||
|
if (range.len == 0)
|
||
|
goto err;
|
||
|
|
||
|
if (inode->i_size - range.start > range.len) {
|
||
|
end_addr = range.start + range.len;
|
||
|
} else {
|
||
|
end_addr = range.len == (u64)-1 ?
|
||
|
sbi->sb->s_maxbytes : inode->i_size;
|
||
|
to_end = true;
|
||
|
}
|
||
|
|
||
|
if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
|
||
|
(!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
|
||
|
ret = -EINVAL;
|
||
|
goto err;
|
||
|
}
|
||
|
|
||
|
index = F2FS_BYTES_TO_BLK(range.start);
|
||
|
pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
|
||
|
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
goto err;
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(mapping);
|
||
|
|
||
|
ret = filemap_write_and_wait_range(mapping, range.start,
|
||
|
to_end ? LLONG_MAX : end_addr - 1);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
truncate_inode_pages_range(mapping, range.start,
|
||
|
to_end ? -1 : end_addr - 1);
|
||
|
|
||
|
while (index < pg_end) {
|
||
|
struct dnode_of_data dn;
|
||
|
pgoff_t end_offset, count;
|
||
|
int i;
|
||
|
|
||
|
set_new_dnode(&dn, inode, NULL, NULL, 0);
|
||
|
ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
|
||
|
if (ret) {
|
||
|
if (ret == -ENOENT) {
|
||
|
index = f2fs_get_next_page_offset(&dn, index);
|
||
|
continue;
|
||
|
}
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
|
||
|
count = min(end_offset - dn.ofs_in_node, pg_end - index);
|
||
|
for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
|
||
|
struct block_device *cur_bdev;
|
||
|
block_t blkaddr = f2fs_data_blkaddr(&dn);
|
||
|
|
||
|
if (!__is_valid_data_blkaddr(blkaddr))
|
||
|
continue;
|
||
|
|
||
|
if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
|
||
|
DATA_GENERIC_ENHANCE)) {
|
||
|
ret = -EFSCORRUPTED;
|
||
|
f2fs_put_dnode(&dn);
|
||
|
f2fs_handle_error(sbi,
|
||
|
ERROR_INVALID_BLKADDR);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
|
||
|
if (f2fs_is_multi_device(sbi)) {
|
||
|
int di = f2fs_target_device_index(sbi, blkaddr);
|
||
|
|
||
|
blkaddr -= FDEV(di).start_blk;
|
||
|
}
|
||
|
|
||
|
if (len) {
|
||
|
if (prev_bdev == cur_bdev &&
|
||
|
index == prev_index + len &&
|
||
|
blkaddr == prev_block + len) {
|
||
|
len++;
|
||
|
} else {
|
||
|
ret = f2fs_secure_erase(prev_bdev,
|
||
|
inode, prev_index, prev_block,
|
||
|
len, range.flags);
|
||
|
if (ret) {
|
||
|
f2fs_put_dnode(&dn);
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
len = 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (!len) {
|
||
|
prev_bdev = cur_bdev;
|
||
|
prev_index = index;
|
||
|
prev_block = blkaddr;
|
||
|
len = 1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
f2fs_put_dnode(&dn);
|
||
|
|
||
|
if (fatal_signal_pending(current)) {
|
||
|
ret = -EINTR;
|
||
|
goto out;
|
||
|
}
|
||
|
cond_resched();
|
||
|
}
|
||
|
|
||
|
if (len)
|
||
|
ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
|
||
|
prev_block, len, range.flags);
|
||
|
out:
|
||
|
filemap_invalidate_unlock(mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
err:
|
||
|
inode_unlock(inode);
|
||
|
file_end_write(filp);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_comp_option option;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
inode_lock_shared(inode);
|
||
|
|
||
|
if (!f2fs_compressed_file(inode)) {
|
||
|
inode_unlock_shared(inode);
|
||
|
return -ENODATA;
|
||
|
}
|
||
|
|
||
|
option.algorithm = F2FS_I(inode)->i_compress_algorithm;
|
||
|
option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
|
||
|
|
||
|
inode_unlock_shared(inode);
|
||
|
|
||
|
if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
|
||
|
sizeof(option)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_comp_option option;
|
||
|
int ret = 0;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(sbi))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (!(filp->f_mode & FMODE_WRITE))
|
||
|
return -EBADF;
|
||
|
|
||
|
if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
|
||
|
sizeof(option)))
|
||
|
return -EFAULT;
|
||
|
|
||
|
if (!f2fs_compressed_file(inode) ||
|
||
|
option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
|
||
|
option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
|
||
|
option.algorithm >= COMPRESS_MAX)
|
||
|
return -EINVAL;
|
||
|
|
||
|
file_start_write(filp);
|
||
|
inode_lock(inode);
|
||
|
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_sem);
|
||
|
if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
|
||
|
ret = -EBUSY;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (F2FS_HAS_BLOCKS(inode)) {
|
||
|
ret = -EFBIG;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
F2FS_I(inode)->i_compress_algorithm = option.algorithm;
|
||
|
F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
|
||
|
F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
|
||
|
f2fs_mark_inode_dirty_sync(inode, true);
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode))
|
||
|
f2fs_warn(sbi, "compression algorithm is successfully set, "
|
||
|
"but current kernel doesn't support this algorithm.");
|
||
|
out:
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_sem);
|
||
|
inode_unlock(inode);
|
||
|
file_end_write(filp);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
|
||
|
{
|
||
|
DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
|
||
|
struct address_space *mapping = inode->i_mapping;
|
||
|
struct page *page;
|
||
|
pgoff_t redirty_idx = page_idx;
|
||
|
int i, page_len = 0, ret = 0;
|
||
|
|
||
|
page_cache_ra_unbounded(&ractl, len, 0);
|
||
|
|
||
|
for (i = 0; i < len; i++, page_idx++) {
|
||
|
page = read_cache_page(mapping, page_idx, NULL, NULL);
|
||
|
if (IS_ERR(page)) {
|
||
|
ret = PTR_ERR(page);
|
||
|
break;
|
||
|
}
|
||
|
page_len++;
|
||
|
}
|
||
|
|
||
|
for (i = 0; i < page_len; i++, redirty_idx++) {
|
||
|
page = find_lock_page(mapping, redirty_idx);
|
||
|
|
||
|
/* It will never fail, when page has pinned above */
|
||
|
f2fs_bug_on(F2FS_I_SB(inode), !page);
|
||
|
|
||
|
set_page_dirty(page);
|
||
|
f2fs_put_page(page, 1);
|
||
|
f2fs_put_page(page, 0);
|
||
|
}
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
pgoff_t page_idx = 0, last_idx;
|
||
|
unsigned int blk_per_seg = sbi->blocks_per_seg;
|
||
|
int cluster_size = fi->i_cluster_size;
|
||
|
int count, ret;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(sbi) ||
|
||
|
F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (!(filp->f_mode & FMODE_WRITE))
|
||
|
return -EBADF;
|
||
|
|
||
|
if (!f2fs_compressed_file(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
f2fs_balance_fs(F2FS_I_SB(inode), true);
|
||
|
|
||
|
file_start_write(filp);
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode)) {
|
||
|
ret = -EOPNOTSUPP;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
|
||
|
ret = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
if (!atomic_read(&fi->i_compr_blocks))
|
||
|
goto out;
|
||
|
|
||
|
last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
|
||
|
|
||
|
count = last_idx - page_idx;
|
||
|
while (count) {
|
||
|
int len = min(cluster_size, count);
|
||
|
|
||
|
ret = redirty_blocks(inode, page_idx, len);
|
||
|
if (ret < 0)
|
||
|
break;
|
||
|
|
||
|
if (get_dirty_pages(inode) >= blk_per_seg)
|
||
|
filemap_fdatawrite(inode->i_mapping);
|
||
|
|
||
|
count -= len;
|
||
|
page_idx += len;
|
||
|
}
|
||
|
|
||
|
if (!ret)
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, 0,
|
||
|
LLONG_MAX);
|
||
|
|
||
|
if (ret)
|
||
|
f2fs_warn(sbi, "%s: The file might be partially decompressed (errno=%d). Please delete the file.",
|
||
|
__func__, ret);
|
||
|
out:
|
||
|
inode_unlock(inode);
|
||
|
file_end_write(filp);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
|
||
|
{
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
pgoff_t page_idx = 0, last_idx;
|
||
|
unsigned int blk_per_seg = sbi->blocks_per_seg;
|
||
|
int cluster_size = F2FS_I(inode)->i_cluster_size;
|
||
|
int count, ret;
|
||
|
|
||
|
if (!f2fs_sb_has_compression(sbi) ||
|
||
|
F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (!(filp->f_mode & FMODE_WRITE))
|
||
|
return -EBADF;
|
||
|
|
||
|
if (!f2fs_compressed_file(inode))
|
||
|
return -EINVAL;
|
||
|
|
||
|
f2fs_balance_fs(F2FS_I_SB(inode), true);
|
||
|
|
||
|
file_start_write(filp);
|
||
|
inode_lock(inode);
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode)) {
|
||
|
ret = -EOPNOTSUPP;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) {
|
||
|
ret = -EINVAL;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
set_inode_flag(inode, FI_ENABLE_COMPRESS);
|
||
|
|
||
|
last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
|
||
|
|
||
|
count = last_idx - page_idx;
|
||
|
while (count) {
|
||
|
int len = min(cluster_size, count);
|
||
|
|
||
|
ret = redirty_blocks(inode, page_idx, len);
|
||
|
if (ret < 0)
|
||
|
break;
|
||
|
|
||
|
if (get_dirty_pages(inode) >= blk_per_seg)
|
||
|
filemap_fdatawrite(inode->i_mapping);
|
||
|
|
||
|
count -= len;
|
||
|
page_idx += len;
|
||
|
}
|
||
|
|
||
|
if (!ret)
|
||
|
ret = filemap_write_and_wait_range(inode->i_mapping, 0,
|
||
|
LLONG_MAX);
|
||
|
|
||
|
clear_inode_flag(inode, FI_ENABLE_COMPRESS);
|
||
|
|
||
|
if (ret)
|
||
|
f2fs_warn(sbi, "%s: The file might be partially compressed (errno=%d). Please delete the file.",
|
||
|
__func__, ret);
|
||
|
out:
|
||
|
inode_unlock(inode);
|
||
|
file_end_write(filp);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||
|
{
|
||
|
switch (cmd) {
|
||
|
case FS_IOC_GETVERSION:
|
||
|
return f2fs_ioc_getversion(filp, arg);
|
||
|
case F2FS_IOC_START_ATOMIC_WRITE:
|
||
|
return f2fs_ioc_start_atomic_write(filp);
|
||
|
case F2FS_IOC_COMMIT_ATOMIC_WRITE:
|
||
|
return f2fs_ioc_commit_atomic_write(filp);
|
||
|
case F2FS_IOC_ABORT_ATOMIC_WRITE:
|
||
|
return f2fs_ioc_abort_atomic_write(filp);
|
||
|
case F2FS_IOC_START_VOLATILE_WRITE:
|
||
|
case F2FS_IOC_RELEASE_VOLATILE_WRITE:
|
||
|
return -EOPNOTSUPP;
|
||
|
case F2FS_IOC_SHUTDOWN:
|
||
|
return f2fs_ioc_shutdown(filp, arg);
|
||
|
case FITRIM:
|
||
|
return f2fs_ioc_fitrim(filp, arg);
|
||
|
case FS_IOC_SET_ENCRYPTION_POLICY:
|
||
|
return f2fs_ioc_set_encryption_policy(filp, arg);
|
||
|
case FS_IOC_GET_ENCRYPTION_POLICY:
|
||
|
return f2fs_ioc_get_encryption_policy(filp, arg);
|
||
|
case FS_IOC_GET_ENCRYPTION_PWSALT:
|
||
|
return f2fs_ioc_get_encryption_pwsalt(filp, arg);
|
||
|
case FS_IOC_GET_ENCRYPTION_POLICY_EX:
|
||
|
return f2fs_ioc_get_encryption_policy_ex(filp, arg);
|
||
|
case FS_IOC_ADD_ENCRYPTION_KEY:
|
||
|
return f2fs_ioc_add_encryption_key(filp, arg);
|
||
|
case FS_IOC_REMOVE_ENCRYPTION_KEY:
|
||
|
return f2fs_ioc_remove_encryption_key(filp, arg);
|
||
|
case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
|
||
|
return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
|
||
|
case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
|
||
|
return f2fs_ioc_get_encryption_key_status(filp, arg);
|
||
|
case FS_IOC_GET_ENCRYPTION_NONCE:
|
||
|
return f2fs_ioc_get_encryption_nonce(filp, arg);
|
||
|
case F2FS_IOC_GARBAGE_COLLECT:
|
||
|
return f2fs_ioc_gc(filp, arg);
|
||
|
case F2FS_IOC_GARBAGE_COLLECT_RANGE:
|
||
|
return f2fs_ioc_gc_range(filp, arg);
|
||
|
case F2FS_IOC_WRITE_CHECKPOINT:
|
||
|
return f2fs_ioc_write_checkpoint(filp, arg);
|
||
|
case F2FS_IOC_DEFRAGMENT:
|
||
|
return f2fs_ioc_defragment(filp, arg);
|
||
|
case F2FS_IOC_MOVE_RANGE:
|
||
|
return f2fs_ioc_move_range(filp, arg);
|
||
|
case F2FS_IOC_FLUSH_DEVICE:
|
||
|
return f2fs_ioc_flush_device(filp, arg);
|
||
|
case F2FS_IOC_GET_FEATURES:
|
||
|
return f2fs_ioc_get_features(filp, arg);
|
||
|
case F2FS_IOC_GET_PIN_FILE:
|
||
|
return f2fs_ioc_get_pin_file(filp, arg);
|
||
|
case F2FS_IOC_SET_PIN_FILE:
|
||
|
return f2fs_ioc_set_pin_file(filp, arg);
|
||
|
case F2FS_IOC_PRECACHE_EXTENTS:
|
||
|
return f2fs_ioc_precache_extents(filp, arg);
|
||
|
case F2FS_IOC_RESIZE_FS:
|
||
|
return f2fs_ioc_resize_fs(filp, arg);
|
||
|
case FS_IOC_ENABLE_VERITY:
|
||
|
return f2fs_ioc_enable_verity(filp, arg);
|
||
|
case FS_IOC_MEASURE_VERITY:
|
||
|
return f2fs_ioc_measure_verity(filp, arg);
|
||
|
case FS_IOC_READ_VERITY_METADATA:
|
||
|
return f2fs_ioc_read_verity_metadata(filp, arg);
|
||
|
case FS_IOC_GETFSLABEL:
|
||
|
return f2fs_ioc_getfslabel(filp, arg);
|
||
|
case FS_IOC_SETFSLABEL:
|
||
|
return f2fs_ioc_setfslabel(filp, arg);
|
||
|
case F2FS_IOC_GET_COMPRESS_BLOCKS:
|
||
|
return f2fs_get_compress_blocks(filp, arg);
|
||
|
case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
|
||
|
return f2fs_release_compress_blocks(filp, arg);
|
||
|
case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
|
||
|
return f2fs_reserve_compress_blocks(filp, arg);
|
||
|
case F2FS_IOC_SEC_TRIM_FILE:
|
||
|
return f2fs_sec_trim_file(filp, arg);
|
||
|
case F2FS_IOC_GET_COMPRESS_OPTION:
|
||
|
return f2fs_ioc_get_compress_option(filp, arg);
|
||
|
case F2FS_IOC_SET_COMPRESS_OPTION:
|
||
|
return f2fs_ioc_set_compress_option(filp, arg);
|
||
|
case F2FS_IOC_DECOMPRESS_FILE:
|
||
|
return f2fs_ioc_decompress_file(filp, arg);
|
||
|
case F2FS_IOC_COMPRESS_FILE:
|
||
|
return f2fs_ioc_compress_file(filp, arg);
|
||
|
default:
|
||
|
return -ENOTTY;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||
|
{
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
|
||
|
return -EIO;
|
||
|
if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
|
||
|
return -ENOSPC;
|
||
|
|
||
|
return __f2fs_ioctl(filp, cmd, arg);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Return %true if the given read or write request should use direct I/O, or
|
||
|
* %false if it should use buffered I/O.
|
||
|
*/
|
||
|
static bool f2fs_should_use_dio(struct inode *inode, struct kiocb *iocb,
|
||
|
struct iov_iter *iter)
|
||
|
{
|
||
|
unsigned int align;
|
||
|
|
||
|
if (!(iocb->ki_flags & IOCB_DIRECT))
|
||
|
return false;
|
||
|
|
||
|
if (f2fs_force_buffered_io(inode, iov_iter_rw(iter)))
|
||
|
return false;
|
||
|
|
||
|
/*
|
||
|
* Direct I/O not aligned to the disk's logical_block_size will be
|
||
|
* attempted, but will fail with -EINVAL.
|
||
|
*
|
||
|
* f2fs additionally requires that direct I/O be aligned to the
|
||
|
* filesystem block size, which is often a stricter requirement.
|
||
|
* However, f2fs traditionally falls back to buffered I/O on requests
|
||
|
* that are logical_block_size-aligned but not fs-block aligned.
|
||
|
*
|
||
|
* The below logic implements this behavior.
|
||
|
*/
|
||
|
align = iocb->ki_pos | iov_iter_alignment(iter);
|
||
|
if (!IS_ALIGNED(align, i_blocksize(inode)) &&
|
||
|
IS_ALIGNED(align, bdev_logical_block_size(inode->i_sb->s_bdev)))
|
||
|
return false;
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
static int f2fs_dio_read_end_io(struct kiocb *iocb, ssize_t size, int error,
|
||
|
unsigned int flags)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(iocb->ki_filp));
|
||
|
|
||
|
dec_page_count(sbi, F2FS_DIO_READ);
|
||
|
if (error)
|
||
|
return error;
|
||
|
f2fs_update_iostat(sbi, NULL, APP_DIRECT_READ_IO, size);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static const struct iomap_dio_ops f2fs_iomap_dio_read_ops = {
|
||
|
.end_io = f2fs_dio_read_end_io,
|
||
|
};
|
||
|
|
||
|
static ssize_t f2fs_dio_read_iter(struct kiocb *iocb, struct iov_iter *to)
|
||
|
{
|
||
|
struct file *file = iocb->ki_filp;
|
||
|
struct inode *inode = file_inode(file);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
const loff_t pos = iocb->ki_pos;
|
||
|
const size_t count = iov_iter_count(to);
|
||
|
struct iomap_dio *dio;
|
||
|
ssize_t ret;
|
||
|
|
||
|
if (count == 0)
|
||
|
return 0; /* skip atime update */
|
||
|
|
||
|
trace_f2fs_direct_IO_enter(inode, iocb, count, READ);
|
||
|
|
||
|
if (iocb->ki_flags & IOCB_NOWAIT) {
|
||
|
if (!f2fs_down_read_trylock(&fi->i_gc_rwsem[READ])) {
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
} else {
|
||
|
f2fs_down_read(&fi->i_gc_rwsem[READ]);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
|
||
|
* the higher-level function iomap_dio_rw() in order to ensure that the
|
||
|
* F2FS_DIO_READ counter will be decremented correctly in all cases.
|
||
|
*/
|
||
|
inc_page_count(sbi, F2FS_DIO_READ);
|
||
|
dio = __iomap_dio_rw(iocb, to, &f2fs_iomap_ops,
|
||
|
&f2fs_iomap_dio_read_ops, 0, NULL, 0);
|
||
|
if (IS_ERR_OR_NULL(dio)) {
|
||
|
ret = PTR_ERR_OR_ZERO(dio);
|
||
|
if (ret != -EIOCBQUEUED)
|
||
|
dec_page_count(sbi, F2FS_DIO_READ);
|
||
|
} else {
|
||
|
ret = iomap_dio_complete(dio);
|
||
|
}
|
||
|
|
||
|
f2fs_up_read(&fi->i_gc_rwsem[READ]);
|
||
|
|
||
|
file_accessed(file);
|
||
|
out:
|
||
|
trace_f2fs_direct_IO_exit(inode, pos, count, READ, ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
|
||
|
{
|
||
|
struct inode *inode = file_inode(iocb->ki_filp);
|
||
|
const loff_t pos = iocb->ki_pos;
|
||
|
ssize_t ret;
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode))
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
if (trace_f2fs_dataread_start_enabled()) {
|
||
|
char *p = f2fs_kmalloc(F2FS_I_SB(inode), PATH_MAX, GFP_KERNEL);
|
||
|
char *path;
|
||
|
|
||
|
if (!p)
|
||
|
goto skip_read_trace;
|
||
|
|
||
|
path = dentry_path_raw(file_dentry(iocb->ki_filp), p, PATH_MAX);
|
||
|
if (IS_ERR(path)) {
|
||
|
kfree(p);
|
||
|
goto skip_read_trace;
|
||
|
}
|
||
|
|
||
|
trace_f2fs_dataread_start(inode, pos, iov_iter_count(to),
|
||
|
current->pid, path, current->comm);
|
||
|
kfree(p);
|
||
|
}
|
||
|
skip_read_trace:
|
||
|
if (f2fs_should_use_dio(inode, iocb, to)) {
|
||
|
ret = f2fs_dio_read_iter(iocb, to);
|
||
|
} else {
|
||
|
ret = filemap_read(iocb, to, 0);
|
||
|
if (ret > 0)
|
||
|
f2fs_update_iostat(F2FS_I_SB(inode), inode,
|
||
|
APP_BUFFERED_READ_IO, ret);
|
||
|
}
|
||
|
if (trace_f2fs_dataread_end_enabled())
|
||
|
trace_f2fs_dataread_end(inode, pos, ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static ssize_t f2fs_write_checks(struct kiocb *iocb, struct iov_iter *from)
|
||
|
{
|
||
|
struct file *file = iocb->ki_filp;
|
||
|
struct inode *inode = file_inode(file);
|
||
|
ssize_t count;
|
||
|
int err;
|
||
|
|
||
|
if (IS_IMMUTABLE(inode))
|
||
|
return -EPERM;
|
||
|
|
||
|
if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
|
||
|
return -EPERM;
|
||
|
|
||
|
count = generic_write_checks(iocb, from);
|
||
|
if (count <= 0)
|
||
|
return count;
|
||
|
|
||
|
err = file_modified(file);
|
||
|
if (err)
|
||
|
return err;
|
||
|
return count;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Preallocate blocks for a write request, if it is possible and helpful to do
|
||
|
* so. Returns a positive number if blocks may have been preallocated, 0 if no
|
||
|
* blocks were preallocated, or a negative errno value if something went
|
||
|
* seriously wrong. Also sets FI_PREALLOCATED_ALL on the inode if *all* the
|
||
|
* requested blocks (not just some of them) have been allocated.
|
||
|
*/
|
||
|
static int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *iter,
|
||
|
bool dio)
|
||
|
{
|
||
|
struct inode *inode = file_inode(iocb->ki_filp);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
const loff_t pos = iocb->ki_pos;
|
||
|
const size_t count = iov_iter_count(iter);
|
||
|
struct f2fs_map_blocks map = {};
|
||
|
int flag;
|
||
|
int ret;
|
||
|
|
||
|
/* If it will be an out-of-place direct write, don't bother. */
|
||
|
if (dio && f2fs_lfs_mode(sbi))
|
||
|
return 0;
|
||
|
/*
|
||
|
* Don't preallocate holes aligned to DIO_SKIP_HOLES which turns into
|
||
|
* buffered IO, if DIO meets any holes.
|
||
|
*/
|
||
|
if (dio && i_size_read(inode) &&
|
||
|
(F2FS_BYTES_TO_BLK(pos) < F2FS_BLK_ALIGN(i_size_read(inode))))
|
||
|
return 0;
|
||
|
|
||
|
/* No-wait I/O can't allocate blocks. */
|
||
|
if (iocb->ki_flags & IOCB_NOWAIT)
|
||
|
return 0;
|
||
|
|
||
|
/* If it will be a short write, don't bother. */
|
||
|
if (fault_in_iov_iter_readable(iter, count))
|
||
|
return 0;
|
||
|
|
||
|
if (f2fs_has_inline_data(inode)) {
|
||
|
/* If the data will fit inline, don't bother. */
|
||
|
if (pos + count <= MAX_INLINE_DATA(inode))
|
||
|
return 0;
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/* Do not preallocate blocks that will be written partially in 4KB. */
|
||
|
map.m_lblk = F2FS_BLK_ALIGN(pos);
|
||
|
map.m_len = F2FS_BYTES_TO_BLK(pos + count);
|
||
|
if (map.m_len > map.m_lblk)
|
||
|
map.m_len -= map.m_lblk;
|
||
|
else
|
||
|
map.m_len = 0;
|
||
|
map.m_may_create = true;
|
||
|
if (dio) {
|
||
|
map.m_seg_type = f2fs_rw_hint_to_seg_type(inode->i_write_hint);
|
||
|
flag = F2FS_GET_BLOCK_PRE_DIO;
|
||
|
} else {
|
||
|
map.m_seg_type = NO_CHECK_TYPE;
|
||
|
flag = F2FS_GET_BLOCK_PRE_AIO;
|
||
|
}
|
||
|
|
||
|
ret = f2fs_map_blocks(inode, &map, 1, flag);
|
||
|
/* -ENOSPC|-EDQUOT are fine to report the number of allocated blocks. */
|
||
|
if (ret < 0 && !((ret == -ENOSPC || ret == -EDQUOT) && map.m_len > 0))
|
||
|
return ret;
|
||
|
if (ret == 0)
|
||
|
set_inode_flag(inode, FI_PREALLOCATED_ALL);
|
||
|
return map.m_len;
|
||
|
}
|
||
|
|
||
|
static ssize_t f2fs_buffered_write_iter(struct kiocb *iocb,
|
||
|
struct iov_iter *from)
|
||
|
{
|
||
|
struct file *file = iocb->ki_filp;
|
||
|
struct inode *inode = file_inode(file);
|
||
|
ssize_t ret;
|
||
|
|
||
|
if (iocb->ki_flags & IOCB_NOWAIT)
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
current->backing_dev_info = inode_to_bdi(inode);
|
||
|
ret = generic_perform_write(iocb, from);
|
||
|
current->backing_dev_info = NULL;
|
||
|
|
||
|
if (ret > 0) {
|
||
|
iocb->ki_pos += ret;
|
||
|
f2fs_update_iostat(F2FS_I_SB(inode), inode,
|
||
|
APP_BUFFERED_IO, ret);
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_dio_write_end_io(struct kiocb *iocb, ssize_t size, int error,
|
||
|
unsigned int flags)
|
||
|
{
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(iocb->ki_filp));
|
||
|
|
||
|
dec_page_count(sbi, F2FS_DIO_WRITE);
|
||
|
if (error)
|
||
|
return error;
|
||
|
f2fs_update_iostat(sbi, NULL, APP_DIRECT_IO, size);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static const struct iomap_dio_ops f2fs_iomap_dio_write_ops = {
|
||
|
.end_io = f2fs_dio_write_end_io,
|
||
|
};
|
||
|
|
||
|
static ssize_t f2fs_dio_write_iter(struct kiocb *iocb, struct iov_iter *from,
|
||
|
bool *may_need_sync)
|
||
|
{
|
||
|
struct file *file = iocb->ki_filp;
|
||
|
struct inode *inode = file_inode(file);
|
||
|
struct f2fs_inode_info *fi = F2FS_I(inode);
|
||
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
|
||
|
const bool do_opu = f2fs_lfs_mode(sbi);
|
||
|
const loff_t pos = iocb->ki_pos;
|
||
|
const ssize_t count = iov_iter_count(from);
|
||
|
unsigned int dio_flags;
|
||
|
struct iomap_dio *dio;
|
||
|
ssize_t ret;
|
||
|
|
||
|
trace_f2fs_direct_IO_enter(inode, iocb, count, WRITE);
|
||
|
|
||
|
if (iocb->ki_flags & IOCB_NOWAIT) {
|
||
|
/* f2fs_convert_inline_inode() and block allocation can block */
|
||
|
if (f2fs_has_inline_data(inode) ||
|
||
|
!f2fs_overwrite_io(inode, pos, count)) {
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (!f2fs_down_read_trylock(&fi->i_gc_rwsem[WRITE])) {
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
if (do_opu && !f2fs_down_read_trylock(&fi->i_gc_rwsem[READ])) {
|
||
|
f2fs_up_read(&fi->i_gc_rwsem[WRITE]);
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
} else {
|
||
|
ret = f2fs_convert_inline_inode(inode);
|
||
|
if (ret)
|
||
|
goto out;
|
||
|
|
||
|
f2fs_down_read(&fi->i_gc_rwsem[WRITE]);
|
||
|
if (do_opu)
|
||
|
f2fs_down_read(&fi->i_gc_rwsem[READ]);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* We have to use __iomap_dio_rw() and iomap_dio_complete() instead of
|
||
|
* the higher-level function iomap_dio_rw() in order to ensure that the
|
||
|
* F2FS_DIO_WRITE counter will be decremented correctly in all cases.
|
||
|
*/
|
||
|
inc_page_count(sbi, F2FS_DIO_WRITE);
|
||
|
dio_flags = 0;
|
||
|
if (pos + count > inode->i_size)
|
||
|
dio_flags |= IOMAP_DIO_FORCE_WAIT;
|
||
|
dio = __iomap_dio_rw(iocb, from, &f2fs_iomap_ops,
|
||
|
&f2fs_iomap_dio_write_ops, dio_flags, NULL, 0);
|
||
|
if (IS_ERR_OR_NULL(dio)) {
|
||
|
ret = PTR_ERR_OR_ZERO(dio);
|
||
|
if (ret == -ENOTBLK)
|
||
|
ret = 0;
|
||
|
if (ret != -EIOCBQUEUED)
|
||
|
dec_page_count(sbi, F2FS_DIO_WRITE);
|
||
|
} else {
|
||
|
ret = iomap_dio_complete(dio);
|
||
|
}
|
||
|
|
||
|
if (do_opu)
|
||
|
f2fs_up_read(&fi->i_gc_rwsem[READ]);
|
||
|
f2fs_up_read(&fi->i_gc_rwsem[WRITE]);
|
||
|
|
||
|
if (ret < 0)
|
||
|
goto out;
|
||
|
if (pos + ret > inode->i_size)
|
||
|
f2fs_i_size_write(inode, pos + ret);
|
||
|
if (!do_opu)
|
||
|
set_inode_flag(inode, FI_UPDATE_WRITE);
|
||
|
|
||
|
if (iov_iter_count(from)) {
|
||
|
ssize_t ret2;
|
||
|
loff_t bufio_start_pos = iocb->ki_pos;
|
||
|
|
||
|
/*
|
||
|
* The direct write was partial, so we need to fall back to a
|
||
|
* buffered write for the remainder.
|
||
|
*/
|
||
|
|
||
|
ret2 = f2fs_buffered_write_iter(iocb, from);
|
||
|
if (iov_iter_count(from))
|
||
|
f2fs_write_failed(inode, iocb->ki_pos);
|
||
|
if (ret2 < 0)
|
||
|
goto out;
|
||
|
|
||
|
/*
|
||
|
* Ensure that the pagecache pages are written to disk and
|
||
|
* invalidated to preserve the expected O_DIRECT semantics.
|
||
|
*/
|
||
|
if (ret2 > 0) {
|
||
|
loff_t bufio_end_pos = bufio_start_pos + ret2 - 1;
|
||
|
|
||
|
ret += ret2;
|
||
|
|
||
|
ret2 = filemap_write_and_wait_range(file->f_mapping,
|
||
|
bufio_start_pos,
|
||
|
bufio_end_pos);
|
||
|
if (ret2 < 0)
|
||
|
goto out;
|
||
|
invalidate_mapping_pages(file->f_mapping,
|
||
|
bufio_start_pos >> PAGE_SHIFT,
|
||
|
bufio_end_pos >> PAGE_SHIFT);
|
||
|
}
|
||
|
} else {
|
||
|
/* iomap_dio_rw() already handled the generic_write_sync(). */
|
||
|
*may_need_sync = false;
|
||
|
}
|
||
|
out:
|
||
|
trace_f2fs_direct_IO_exit(inode, pos, count, WRITE, ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
|
||
|
{
|
||
|
struct inode *inode = file_inode(iocb->ki_filp);
|
||
|
const loff_t orig_pos = iocb->ki_pos;
|
||
|
const size_t orig_count = iov_iter_count(from);
|
||
|
loff_t target_size;
|
||
|
bool dio;
|
||
|
bool may_need_sync = true;
|
||
|
int preallocated;
|
||
|
ssize_t ret;
|
||
|
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
|
||
|
ret = -EIO;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (!f2fs_is_compress_backend_ready(inode)) {
|
||
|
ret = -EOPNOTSUPP;
|
||
|
goto out;
|
||
|
}
|
||
|
|
||
|
if (iocb->ki_flags & IOCB_NOWAIT) {
|
||
|
if (!inode_trylock(inode)) {
|
||
|
ret = -EAGAIN;
|
||
|
goto out;
|
||
|
}
|
||
|
} else {
|
||
|
inode_lock(inode);
|
||
|
}
|
||
|
|
||
|
ret = f2fs_write_checks(iocb, from);
|
||
|
if (ret <= 0)
|
||
|
goto out_unlock;
|
||
|
|
||
|
/* Determine whether we will do a direct write or a buffered write. */
|
||
|
dio = f2fs_should_use_dio(inode, iocb, from);
|
||
|
|
||
|
/* Possibly preallocate the blocks for the write. */
|
||
|
target_size = iocb->ki_pos + iov_iter_count(from);
|
||
|
preallocated = f2fs_preallocate_blocks(iocb, from, dio);
|
||
|
if (preallocated < 0) {
|
||
|
ret = preallocated;
|
||
|
} else {
|
||
|
if (trace_f2fs_datawrite_start_enabled()) {
|
||
|
char *p = f2fs_kmalloc(F2FS_I_SB(inode),
|
||
|
PATH_MAX, GFP_KERNEL);
|
||
|
char *path;
|
||
|
|
||
|
if (!p)
|
||
|
goto skip_write_trace;
|
||
|
path = dentry_path_raw(file_dentry(iocb->ki_filp),
|
||
|
p, PATH_MAX);
|
||
|
if (IS_ERR(path)) {
|
||
|
kfree(p);
|
||
|
goto skip_write_trace;
|
||
|
}
|
||
|
trace_f2fs_datawrite_start(inode, orig_pos, orig_count,
|
||
|
current->pid, path, current->comm);
|
||
|
kfree(p);
|
||
|
}
|
||
|
skip_write_trace:
|
||
|
/* Do the actual write. */
|
||
|
ret = dio ?
|
||
|
f2fs_dio_write_iter(iocb, from, &may_need_sync) :
|
||
|
f2fs_buffered_write_iter(iocb, from);
|
||
|
|
||
|
if (trace_f2fs_datawrite_end_enabled())
|
||
|
trace_f2fs_datawrite_end(inode, orig_pos, ret);
|
||
|
}
|
||
|
|
||
|
/* Don't leave any preallocated blocks around past i_size. */
|
||
|
if (preallocated && i_size_read(inode) < target_size) {
|
||
|
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
filemap_invalidate_lock(inode->i_mapping);
|
||
|
if (!f2fs_truncate(inode))
|
||
|
file_dont_truncate(inode);
|
||
|
filemap_invalidate_unlock(inode->i_mapping);
|
||
|
f2fs_up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
|
||
|
} else {
|
||
|
file_dont_truncate(inode);
|
||
|
}
|
||
|
|
||
|
clear_inode_flag(inode, FI_PREALLOCATED_ALL);
|
||
|
out_unlock:
|
||
|
inode_unlock(inode);
|
||
|
out:
|
||
|
trace_f2fs_file_write_iter(inode, orig_pos, orig_count, ret);
|
||
|
if (ret > 0 && may_need_sync)
|
||
|
ret = generic_write_sync(iocb, ret);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int f2fs_file_fadvise(struct file *filp, loff_t offset, loff_t len,
|
||
|
int advice)
|
||
|
{
|
||
|
struct address_space *mapping;
|
||
|
struct backing_dev_info *bdi;
|
||
|
struct inode *inode = file_inode(filp);
|
||
|
int err;
|
||
|
|
||
|
if (advice == POSIX_FADV_SEQUENTIAL) {
|
||
|
if (S_ISFIFO(inode->i_mode))
|
||
|
return -ESPIPE;
|
||
|
|
||
|
mapping = filp->f_mapping;
|
||
|
if (!mapping || len < 0)
|
||
|
return -EINVAL;
|
||
|
|
||
|
bdi = inode_to_bdi(mapping->host);
|
||
|
filp->f_ra.ra_pages = bdi->ra_pages *
|
||
|
F2FS_I_SB(inode)->seq_file_ra_mul;
|
||
|
spin_lock(&filp->f_lock);
|
||
|
filp->f_mode &= ~FMODE_RANDOM;
|
||
|
spin_unlock(&filp->f_lock);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
err = generic_fadvise(filp, offset, len, advice);
|
||
|
if (!err && advice == POSIX_FADV_DONTNEED &&
|
||
|
test_opt(F2FS_I_SB(inode), COMPRESS_CACHE) &&
|
||
|
f2fs_compressed_file(inode))
|
||
|
f2fs_invalidate_compress_pages(F2FS_I_SB(inode), inode->i_ino);
|
||
|
|
||
|
return err;
|
||
|
}
|
||
|
|
||
|
#ifdef CONFIG_COMPAT
|
||
|
struct compat_f2fs_gc_range {
|
||
|
u32 sync;
|
||
|
compat_u64 start;
|
||
|
compat_u64 len;
|
||
|
};
|
||
|
#define F2FS_IOC32_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11,\
|
||
|
struct compat_f2fs_gc_range)
|
||
|
|
||
|
static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
|
||
|
{
|
||
|
struct compat_f2fs_gc_range __user *urange;
|
||
|
struct f2fs_gc_range range;
|
||
|
int err;
|
||
|
|
||
|
urange = compat_ptr(arg);
|
||
|
err = get_user(range.sync, &urange->sync);
|
||
|
err |= get_user(range.start, &urange->start);
|
||
|
err |= get_user(range.len, &urange->len);
|
||
|
if (err)
|
||
|
return -EFAULT;
|
||
|
|
||
|
return __f2fs_ioc_gc_range(file, &range);
|
||
|
}
|
||
|
|
||
|
struct compat_f2fs_move_range {
|
||
|
u32 dst_fd;
|
||
|
compat_u64 pos_in;
|
||
|
compat_u64 pos_out;
|
||
|
compat_u64 len;
|
||
|
};
|
||
|
#define F2FS_IOC32_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
|
||
|
struct compat_f2fs_move_range)
|
||
|
|
||
|
static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
|
||
|
{
|
||
|
struct compat_f2fs_move_range __user *urange;
|
||
|
struct f2fs_move_range range;
|
||
|
int err;
|
||
|
|
||
|
urange = compat_ptr(arg);
|
||
|
err = get_user(range.dst_fd, &urange->dst_fd);
|
||
|
err |= get_user(range.pos_in, &urange->pos_in);
|
||
|
err |= get_user(range.pos_out, &urange->pos_out);
|
||
|
err |= get_user(range.len, &urange->len);
|
||
|
if (err)
|
||
|
return -EFAULT;
|
||
|
|
||
|
return __f2fs_ioc_move_range(file, &range);
|
||
|
}
|
||
|
|
||
|
long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
||
|
{
|
||
|
if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
|
||
|
return -EIO;
|
||
|
if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
|
||
|
return -ENOSPC;
|
||
|
|
||
|
switch (cmd) {
|
||
|
case FS_IOC32_GETVERSION:
|
||
|
cmd = FS_IOC_GETVERSION;
|
||
|
break;
|
||
|
case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
|
||
|
return f2fs_compat_ioc_gc_range(file, arg);
|
||
|
case F2FS_IOC32_MOVE_RANGE:
|
||
|
return f2fs_compat_ioc_move_range(file, arg);
|
||
|
case F2FS_IOC_START_ATOMIC_WRITE:
|
||
|
case F2FS_IOC_COMMIT_ATOMIC_WRITE:
|
||
|
case F2FS_IOC_START_VOLATILE_WRITE:
|
||
|
case F2FS_IOC_RELEASE_VOLATILE_WRITE:
|
||
|
case F2FS_IOC_ABORT_ATOMIC_WRITE:
|
||
|
case F2FS_IOC_SHUTDOWN:
|
||
|
case FITRIM:
|
||
|
case FS_IOC_SET_ENCRYPTION_POLICY:
|
||
|
case FS_IOC_GET_ENCRYPTION_PWSALT:
|
||
|
case FS_IOC_GET_ENCRYPTION_POLICY:
|
||
|
case FS_IOC_GET_ENCRYPTION_POLICY_EX:
|
||
|
case FS_IOC_ADD_ENCRYPTION_KEY:
|
||
|
case FS_IOC_REMOVE_ENCRYPTION_KEY:
|
||
|
case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
|
||
|
case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
|
||
|
case FS_IOC_GET_ENCRYPTION_NONCE:
|
||
|
case F2FS_IOC_GARBAGE_COLLECT:
|
||
|
case F2FS_IOC_WRITE_CHECKPOINT:
|
||
|
case F2FS_IOC_DEFRAGMENT:
|
||
|
case F2FS_IOC_FLUSH_DEVICE:
|
||
|
case F2FS_IOC_GET_FEATURES:
|
||
|
case F2FS_IOC_GET_PIN_FILE:
|
||
|
case F2FS_IOC_SET_PIN_FILE:
|
||
|
case F2FS_IOC_PRECACHE_EXTENTS:
|
||
|
case F2FS_IOC_RESIZE_FS:
|
||
|
case FS_IOC_ENABLE_VERITY:
|
||
|
case FS_IOC_MEASURE_VERITY:
|
||
|
case FS_IOC_READ_VERITY_METADATA:
|
||
|
case FS_IOC_GETFSLABEL:
|
||
|
case FS_IOC_SETFSLABEL:
|
||
|
case F2FS_IOC_GET_COMPRESS_BLOCKS:
|
||
|
case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
|
||
|
case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
|
||
|
case F2FS_IOC_SEC_TRIM_FILE:
|
||
|
case F2FS_IOC_GET_COMPRESS_OPTION:
|
||
|
case F2FS_IOC_SET_COMPRESS_OPTION:
|
||
|
case F2FS_IOC_DECOMPRESS_FILE:
|
||
|
case F2FS_IOC_COMPRESS_FILE:
|
||
|
break;
|
||
|
default:
|
||
|
return -ENOIOCTLCMD;
|
||
|
}
|
||
|
return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
const struct file_operations f2fs_file_operations = {
|
||
|
.llseek = f2fs_llseek,
|
||
|
.read_iter = f2fs_file_read_iter,
|
||
|
.write_iter = f2fs_file_write_iter,
|
||
|
.open = f2fs_file_open,
|
||
|
.release = f2fs_release_file,
|
||
|
.mmap = f2fs_file_mmap,
|
||
|
.flush = f2fs_file_flush,
|
||
|
.fsync = f2fs_sync_file,
|
||
|
.fallocate = f2fs_fallocate,
|
||
|
.unlocked_ioctl = f2fs_ioctl,
|
||
|
#ifdef CONFIG_COMPAT
|
||
|
.compat_ioctl = f2fs_compat_ioctl,
|
||
|
#endif
|
||
|
.splice_read = generic_file_splice_read,
|
||
|
.splice_write = iter_file_splice_write,
|
||
|
.fadvise = f2fs_file_fadvise,
|
||
|
};
|