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4463 lines
105 KiB
4463 lines
105 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
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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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|
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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 <trace/events/f2fs.h> |
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#include <uapi/linux/f2fs.h> |
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|
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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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down_read(&F2FS_I(inode)->i_mmap_sem); |
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ret = filemap_fault(vmf); |
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up_read(&F2FS_I(inode)->i_mmap_sem); |
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|
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if (!ret) |
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f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO, |
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F2FS_BLKSIZE); |
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|
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trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret); |
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|
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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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|
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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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|
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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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|
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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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|
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sb_start_pagefault(inode->i_sb); |
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|
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f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); |
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|
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file_update_time(vmf->vma->vm_file); |
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down_read(&F2FS_I(inode)->i_mmap_sem); |
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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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|
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f2fs_update_iostat(sbi, 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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up_read(&F2FS_I(inode)->i_mmap_sem); |
|
|
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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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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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up_write(&fi->i_sem); |
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} |
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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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is_sbi_flag_set(sbi, SBI_CP_DISABLED))) |
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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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goto go_write; |
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|
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/* if fdatasync is triggered, let's do in-place-update */ |
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if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
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set_inode_flag(inode, FI_NEED_IPU); |
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ret = file_write_and_wait_range(file, start, end); |
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clear_inode_flag(inode, FI_NEED_IPU); |
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|
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if (ret) { |
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trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret); |
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return ret; |
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} |
|
|
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/* if the inode is dirty, let's recover all the time */ |
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if (!f2fs_skip_inode_update(inode, datasync)) { |
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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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*/ |
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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)) { |
|
|
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/* it may call write_inode just prior to fsync */ |
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if (need_inode_page_update(sbi, ino)) |
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goto go_write; |
|
|
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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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} |
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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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*/ |
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down_read(&F2FS_I(inode)->i_sem); |
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cp_reason = need_do_checkpoint(inode); |
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up_read(&F2FS_I(inode)->i_sem); |
|
|
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if (cp_reason) { |
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/* all the dirty node pages should be flushed for POR */ |
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ret = f2fs_sync_fs(inode->i_sb, 1); |
|
|
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/* |
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* We've secured consistency through sync_fs. Following pino |
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* will be used only for fsynced inodes after checkpoint. |
|
*/ |
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try_to_fix_pino(inode); |
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clear_inode_flag(inode, FI_APPEND_WRITE); |
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clear_inode_flag(inode, FI_UPDATE_WRITE); |
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goto out; |
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} |
|
sync_nodes: |
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atomic_inc(&sbi->wb_sync_req[NODE]); |
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ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id); |
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atomic_dec(&sbi->wb_sync_req[NODE]); |
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if (ret) |
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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); |
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f2fs_write_inode(inode, NULL); |
|
goto sync_nodes; |
|
} |
|
|
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/* |
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* If it's atomic_write, it's just fine to keep write ordering. So |
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* here we don't need to wait for node write completion, since we use |
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* node chain which serializes node blocks. If one of node writes are |
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* reordered, we can see simply broken chain, resulting in stopping |
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* roll-forward recovery. It means we'll recover all or none node blocks |
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* given fsync mark. |
|
*/ |
|
if (!atomic) { |
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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) |
|
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); |
|
} |
|
|
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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; |
|
set_inode_flag(inode, FI_MMAP_FILE); |
|
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_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 |
|
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 = 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; |
|
} |
|
|
|
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; |
|
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; |
|
} |
|
|
|
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(&init_user_ns, 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; |
|
|
|
if (ia_valid & ATTR_UID) |
|
inode->i_uid = attr->ia_uid; |
|
if (ia_valid & ATTR_GID) |
|
inode->i_gid = attr->ia_gid; |
|
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; |
|
kgid_t kgid = i_gid_into_mnt(mnt_userns, inode); |
|
|
|
if (!in_group_p(kgid) && !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(&init_user_ns, 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(inode, attr)) { |
|
err = dquot_initialize(inode); |
|
if (err) |
|
return err; |
|
} |
|
if ((attr->ia_valid & ATTR_UID && |
|
!uid_eq(attr->ia_uid, inode->i_uid)) || |
|
(attr->ia_valid & ATTR_GID && |
|
!gid_eq(attr->ia_gid, inode->i_gid))) { |
|
f2fs_lock_op(F2FS_I_SB(inode)); |
|
err = dquot_transfer(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. |
|
*/ |
|
if (attr->ia_valid & ATTR_UID) |
|
inode->i_uid = attr->ia_uid; |
|
if (attr->ia_valid & ATTR_GID) |
|
inode->i_gid = attr->ia_gid; |
|
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; |
|
} |
|
|
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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. |
|
*/ |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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(&init_user_ns, inode, attr); |
|
|
|
if (attr->ia_valid & ATTR_MODE) { |
|
err = posix_acl_chmod(&init_user_ns, 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) { |
|
struct address_space *mapping = inode->i_mapping; |
|
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; |
|
|
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
truncate_inode_pages_range(mapping, blk_start, |
|
blk_end - 1); |
|
|
|
f2fs_lock_op(sbi); |
|
ret = f2fs_truncate_hole(inode, pg_start, pg_end); |
|
f2fs_unlock_op(sbi); |
|
|
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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); |
|
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); |
|
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); |
|
} |
|
f2fs_copy_page(psrc, pdst); |
|
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 */ |
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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); |
|
|
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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 */ |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
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); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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) { |
|
f2fs_invalidate_blocks(sbi, dn->data_blkaddr); |
|
dn->data_blkaddr = NEW_ADDR; |
|
f2fs_set_data_blkaddr(dn); |
|
} |
|
} |
|
|
|
f2fs_update_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; |
|
|
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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); |
|
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); |
|
|
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
ret = f2fs_truncate_blocks(inode, i_size_read(inode), true); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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; |
|
|
|
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 */ |
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
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); |
|
} |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
|
|
/* write out all moved pages, if possible */ |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
|
truncate_pagecache(inode, offset); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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 }; |
|
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 = 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)))) { |
|
down_write(&sbi->gc_lock); |
|
err = f2fs_gc(sbi, true, false, false, NULL_SEGNO); |
|
if (err && err != -ENODATA && err != -EAGAIN) |
|
goto out_err; |
|
} |
|
|
|
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); |
|
|
|
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; |
|
|
|
if (f2fs_compressed_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); |
|
|
|
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; |
|
|
|
/* some remained atomic pages should discarded */ |
|
if (f2fs_is_atomic_file(inode)) |
|
f2fs_drop_inmem_pages(inode); |
|
if (f2fs_is_volatile_file(inode)) { |
|
set_inode_flag(inode, FI_DROP_CACHE); |
|
filemap_fdatawrite(inode->i_mapping); |
|
clear_inode_flag(inode, FI_DROP_CACHE); |
|
clear_inode_flag(inode, FI_VOLATILE_FILE); |
|
stat_dec_volatile_write(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_is_atomic_file(inode) && |
|
F2FS_I(inode)->inmem_task == current) |
|
f2fs_drop_inmem_pages(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; |
|
} |
|
if (iflags & F2FS_NOCOMP_FL) |
|
return -EINVAL; |
|
if (iflags & F2FS_COMPR_FL) { |
|
if (!f2fs_may_compress(inode)) |
|
return -EINVAL; |
|
if (S_ISREG(inode->i_mode) && inode->i_size) |
|
return -EINVAL; |
|
|
|
set_compress_context(inode); |
|
} |
|
} |
|
if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) { |
|
if (masked_flags & F2FS_COMPR_FL) |
|
return -EINVAL; |
|
} |
|
|
|
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 f2fs_inode_info *fi = F2FS_I(inode); |
|
struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
|
int ret; |
|
|
|
if (!inode_owner_or_capable(&init_user_ns, 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); |
|
|
|
f2fs_disable_compressed_file(inode); |
|
|
|
if (f2fs_is_atomic_file(inode)) { |
|
if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
ret = f2fs_convert_inline_inode(inode); |
|
if (ret) |
|
goto out; |
|
|
|
down_write(&F2FS_I(inode)->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(F2FS_I_SB(inode), "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) { |
|
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
goto out; |
|
} |
|
|
|
spin_lock(&sbi->inode_lock[ATOMIC_FILE]); |
|
if (list_empty(&fi->inmem_ilist)) |
|
list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]); |
|
sbi->atomic_files++; |
|
spin_unlock(&sbi->inode_lock[ATOMIC_FILE]); |
|
|
|
/* add inode in inmem_list first and set atomic_file */ |
|
set_inode_flag(inode, FI_ATOMIC_FILE); |
|
clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
|
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
|
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
|
F2FS_I(inode)->inmem_task = current; |
|
stat_update_max_atomic_write(inode); |
|
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); |
|
int ret; |
|
|
|
if (!inode_owner_or_capable(&init_user_ns, 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_volatile_file(inode)) { |
|
ret = -EINVAL; |
|
goto err_out; |
|
} |
|
|
|
if (f2fs_is_atomic_file(inode)) { |
|
ret = f2fs_commit_inmem_pages(inode); |
|
if (ret) |
|
goto err_out; |
|
|
|
ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
|
if (!ret) |
|
f2fs_drop_inmem_pages(inode); |
|
} else { |
|
ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false); |
|
} |
|
err_out: |
|
if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) { |
|
clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
|
ret = -EINVAL; |
|
} |
|
inode_unlock(inode); |
|
mnt_drop_write_file(filp); |
|
return ret; |
|
} |
|
|
|
static int f2fs_ioc_start_volatile_write(struct file *filp) |
|
{ |
|
struct inode *inode = file_inode(filp); |
|
int ret; |
|
|
|
if (!inode_owner_or_capable(&init_user_ns, inode)) |
|
return -EACCES; |
|
|
|
if (!S_ISREG(inode->i_mode)) |
|
return -EINVAL; |
|
|
|
ret = mnt_want_write_file(filp); |
|
if (ret) |
|
return ret; |
|
|
|
inode_lock(inode); |
|
|
|
if (f2fs_is_volatile_file(inode)) |
|
goto out; |
|
|
|
ret = f2fs_convert_inline_inode(inode); |
|
if (ret) |
|
goto out; |
|
|
|
stat_inc_volatile_write(inode); |
|
stat_update_max_volatile_write(inode); |
|
|
|
set_inode_flag(inode, FI_VOLATILE_FILE); |
|
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); |
|
out: |
|
inode_unlock(inode); |
|
mnt_drop_write_file(filp); |
|
return ret; |
|
} |
|
|
|
static int f2fs_ioc_release_volatile_write(struct file *filp) |
|
{ |
|
struct inode *inode = file_inode(filp); |
|
int ret; |
|
|
|
if (!inode_owner_or_capable(&init_user_ns, inode)) |
|
return -EACCES; |
|
|
|
ret = mnt_want_write_file(filp); |
|
if (ret) |
|
return ret; |
|
|
|
inode_lock(inode); |
|
|
|
if (!f2fs_is_volatile_file(inode)) |
|
goto out; |
|
|
|
if (!f2fs_is_first_block_written(inode)) { |
|
ret = truncate_partial_data_page(inode, 0, true); |
|
goto out; |
|
} |
|
|
|
ret = punch_hole(inode, 0, F2FS_BLKSIZE); |
|
out: |
|
inode_unlock(inode); |
|
mnt_drop_write_file(filp); |
|
return ret; |
|
} |
|
|
|
static int f2fs_ioc_abort_volatile_write(struct file *filp) |
|
{ |
|
struct inode *inode = file_inode(filp); |
|
int ret; |
|
|
|
if (!inode_owner_or_capable(&init_user_ns, inode)) |
|
return -EACCES; |
|
|
|
ret = mnt_want_write_file(filp); |
|
if (ret) |
|
return ret; |
|
|
|
inode_lock(inode); |
|
|
|
if (f2fs_is_atomic_file(inode)) |
|
f2fs_drop_inmem_pages(inode); |
|
if (f2fs_is_volatile_file(inode)) { |
|
clear_inode_flag(inode, FI_VOLATILE_FILE); |
|
stat_dec_volatile_write(inode); |
|
ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); |
|
} |
|
|
|
clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); |
|
|
|
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); |
|
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); |
|
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); |
|
set_sbi_flag(sbi, SBI_IS_SHUTDOWN); |
|
break; |
|
case F2FS_GOING_DOWN_NOSYNC: |
|
f2fs_stop_checkpoint(sbi, false); |
|
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); |
|
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 request_queue *q = bdev_get_queue(sb->s_bdev); |
|
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, |
|
q->limits.discard_granularity); |
|
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); |
|
int err; |
|
|
|
if (!f2fs_sb_has_encrypt(sbi)) |
|
return -EOPNOTSUPP; |
|
|
|
err = mnt_want_write_file(filp); |
|
if (err) |
|
return err; |
|
|
|
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: |
|
if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
|
16)) |
|
err = -EFAULT; |
|
out_err: |
|
up_write(&sbi->sb_lock); |
|
mnt_drop_write_file(filp); |
|
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); |
|
__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 (!down_write_trylock(&sbi->gc_lock)) { |
|
ret = -EBUSY; |
|
goto out; |
|
} |
|
} else { |
|
down_write(&sbi->gc_lock); |
|
} |
|
|
|
ret = f2fs_gc(sbi, sync, true, false, NULL_SEGNO); |
|
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)); |
|
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 (!down_write_trylock(&sbi->gc_lock)) { |
|
ret = -EBUSY; |
|
goto out; |
|
} |
|
} else { |
|
down_write(&sbi->gc_lock); |
|
} |
|
|
|
ret = f2fs_gc(sbi, range->sync, true, false, |
|
GET_SEGNO(sbi, range->start)); |
|
if (ret) { |
|
if (ret == -EBUSY) |
|
ret = -EAGAIN; |
|
goto out; |
|
} |
|
range->start += 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, 0, 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; |
|
|
|
/* if in-place-update policy is enabled, don't waste time here */ |
|
if (f2fs_should_update_inplace(inode, NULL)) |
|
return -EINVAL; |
|
|
|
pg_start = range->start >> PAGE_SHIFT; |
|
pg_end = (range->start + range->len) >> PAGE_SHIFT; |
|
|
|
f2fs_balance_fs(sbi, true); |
|
|
|
inode_lock(inode); |
|
|
|
/* 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_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, 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_DO_DEFRAG); |
|
|
|
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); |
|
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_DO_DEFRAG); |
|
|
|
err = filemap_fdatawrite(inode->i_mapping); |
|
if (err) |
|
goto out; |
|
} |
|
clear_out: |
|
clear_inode_flag(inode, FI_DO_DEFRAG); |
|
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); |
|
|
|
down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); |
|
if (src != dst) { |
|
ret = -EBUSY; |
|
if (!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) |
|
up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); |
|
out_src: |
|
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; |
|
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 (!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; |
|
ret = f2fs_gc(sbi, true, true, true, start_segno); |
|
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 = 0; |
|
|
|
transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); |
|
if (!IS_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 page *ipage; |
|
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, F2FS_I(inode)->i_projid)) |
|
return 0; |
|
|
|
err = -EPERM; |
|
/* Is it quota file? Do not allow user to mess with it */ |
|
if (IS_NOQUOTA(inode)) |
|
return err; |
|
|
|
ipage = f2fs_get_node_page(sbi, inode->i_ino); |
|
if (IS_ERR(ipage)) |
|
return PTR_ERR(ipage); |
|
|
|
if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize, |
|
i_projid)) { |
|
err = -EOVERFLOW; |
|
f2fs_put_page(ipage, 1); |
|
return err; |
|
} |
|
f2fs_put_page(ipage, 1); |
|
|
|
err = dquot_initialize(inode); |
|
if (err) |
|
return err; |
|
|
|
f2fs_lock_op(sbi); |
|
err = f2fs_transfer_project_quota(inode, kprojid); |
|
if (err) |
|
goto out_unlock; |
|
|
|
F2FS_I(inode)->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 (f2fs_should_update_outplace(inode, NULL)) { |
|
ret = -EINVAL; |
|
goto out; |
|
} |
|
|
|
if (!pin) { |
|
clear_inode_flag(inode, FI_PIN_FILE); |
|
f2fs_i_gc_failures_write(inode, 0); |
|
goto done; |
|
} |
|
|
|
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; |
|
|
|
down_write(&fi->i_gc_rwsem[WRITE]); |
|
err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); |
|
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(sbi, 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; |
|
|
|
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); |
|
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; |
|
|
|
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); |
|
|
|
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))) |
|
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; |
|
|
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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; |
|
} |
|
|
|
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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))) |
|
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; |
|
} |
|
|
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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; |
|
} |
|
|
|
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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) |
|
{ |
|
struct request_queue *q = bdev_get_queue(bdev); |
|
sector_t sector = SECTOR_FROM_BLOCK(block); |
|
sector_t nr_sects = SECTOR_FROM_BLOCK(len); |
|
int ret = 0; |
|
|
|
if (!q) |
|
return -ENXIO; |
|
|
|
if (flags & F2FS_TRIM_FILE_DISCARD) |
|
ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS, |
|
blk_queue_secure_erase(q) ? |
|
BLKDEV_DISCARD_SECURE : 0); |
|
|
|
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; |
|
|
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
|
|
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); |
|
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: |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
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); |
|
|
|
if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) { |
|
ret = -EBUSY; |
|
goto out; |
|
} |
|
|
|
if (inode->i_size != 0) { |
|
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: |
|
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); |
|
if (!page) { |
|
ret = -ENOMEM; |
|
break; |
|
} |
|
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 = 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 (f2fs_is_mmap_file(inode)) { |
|
ret = -EBUSY; |
|
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 (f2fs_is_mmap_file(inode)) { |
|
ret = -EBUSY; |
|
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_START_VOLATILE_WRITE: |
|
return f2fs_ioc_start_volatile_write(filp); |
|
case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
|
return f2fs_ioc_release_volatile_write(filp); |
|
case F2FS_IOC_ABORT_VOLATILE_WRITE: |
|
return f2fs_ioc_abort_volatile_write(filp); |
|
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); |
|
} |
|
|
|
static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) |
|
{ |
|
struct file *file = iocb->ki_filp; |
|
struct inode *inode = file_inode(file); |
|
int ret; |
|
|
|
if (!f2fs_is_compress_backend_ready(inode)) |
|
return -EOPNOTSUPP; |
|
|
|
ret = generic_file_read_iter(iocb, iter); |
|
|
|
if (ret > 0) |
|
f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret); |
|
|
|
return ret; |
|
} |
|
|
|
static ssize_t f2fs_file_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 (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); |
|
} |
|
|
|
if (unlikely(IS_IMMUTABLE(inode))) { |
|
ret = -EPERM; |
|
goto unlock; |
|
} |
|
|
|
if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED)) { |
|
ret = -EPERM; |
|
goto unlock; |
|
} |
|
|
|
ret = generic_write_checks(iocb, from); |
|
if (ret > 0) { |
|
bool preallocated = false; |
|
size_t target_size = 0; |
|
int err; |
|
|
|
if (iov_iter_fault_in_readable(from, iov_iter_count(from))) |
|
set_inode_flag(inode, FI_NO_PREALLOC); |
|
|
|
if ((iocb->ki_flags & IOCB_NOWAIT)) { |
|
if (!f2fs_overwrite_io(inode, iocb->ki_pos, |
|
iov_iter_count(from)) || |
|
f2fs_has_inline_data(inode) || |
|
f2fs_force_buffered_io(inode, iocb, from)) { |
|
clear_inode_flag(inode, FI_NO_PREALLOC); |
|
inode_unlock(inode); |
|
ret = -EAGAIN; |
|
goto out; |
|
} |
|
goto write; |
|
} |
|
|
|
if (is_inode_flag_set(inode, FI_NO_PREALLOC)) |
|
goto write; |
|
|
|
if (iocb->ki_flags & IOCB_DIRECT) { |
|
/* |
|
* Convert inline data for Direct I/O before entering |
|
* f2fs_direct_IO(). |
|
*/ |
|
err = f2fs_convert_inline_inode(inode); |
|
if (err) |
|
goto out_err; |
|
/* |
|
* If force_buffere_io() is true, we have to allocate |
|
* blocks all the time, since f2fs_direct_IO will fall |
|
* back to buffered IO. |
|
*/ |
|
if (!f2fs_force_buffered_io(inode, iocb, from) && |
|
allow_outplace_dio(inode, iocb, from)) |
|
goto write; |
|
} |
|
preallocated = true; |
|
target_size = iocb->ki_pos + iov_iter_count(from); |
|
|
|
err = f2fs_preallocate_blocks(iocb, from); |
|
if (err) { |
|
out_err: |
|
clear_inode_flag(inode, FI_NO_PREALLOC); |
|
inode_unlock(inode); |
|
ret = err; |
|
goto out; |
|
} |
|
write: |
|
ret = __generic_file_write_iter(iocb, from); |
|
clear_inode_flag(inode, FI_NO_PREALLOC); |
|
|
|
/* if we couldn't write data, we should deallocate blocks. */ |
|
if (preallocated && i_size_read(inode) < target_size) { |
|
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
down_write(&F2FS_I(inode)->i_mmap_sem); |
|
f2fs_truncate(inode); |
|
up_write(&F2FS_I(inode)->i_mmap_sem); |
|
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); |
|
} |
|
|
|
if (ret > 0) |
|
f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret); |
|
} |
|
unlock: |
|
inode_unlock(inode); |
|
out: |
|
trace_f2fs_file_write_iter(inode, iocb->ki_pos, |
|
iov_iter_count(from), ret); |
|
if (ret > 0) |
|
ret = generic_write_sync(iocb, ret); |
|
return ret; |
|
} |
|
|
|
#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_VOLATILE_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, |
|
};
|
|
|