ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/fs/f2fs/file.c b/marvell/linux/fs/f2fs/file.c
new file mode 100644
index 0000000..7de13ae
--- /dev/null
+++ b/marvell/linux/fs/f2fs/file.c
@@ -0,0 +1,4630 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fs/f2fs/file.c
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ */
+#include <linux/fs.h>
+#include <linux/f2fs_fs.h>
+#include <linux/stat.h>
+#include <linux/buffer_head.h>
+#include <linux/writeback.h>
+#include <linux/blkdev.h>
+#include <linux/falloc.h>
+#include <linux/types.h>
+#include <linux/compat.h>
+#include <linux/uaccess.h>
+#include <linux/mount.h>
+#include <linux/pagevec.h>
+#include <linux/uio.h>
+#include <linux/uuid.h>
+#include <linux/file.h>
+#include <linux/nls.h>
+#include <linux/sched/signal.h>
+
+#include "f2fs.h"
+#include "node.h"
+#include "segment.h"
+#include "xattr.h"
+#include "acl.h"
+#include "gc.h"
+#include <trace/events/f2fs.h>
+#include <uapi/linux/f2fs.h>
+
+static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
+{
+ struct inode *inode = file_inode(vmf->vma->vm_file);
+ vm_fault_t ret;
+
+ down_read(&F2FS_I(inode)->i_mmap_sem);
+ ret = filemap_fault(vmf);
+ up_read(&F2FS_I(inode)->i_mmap_sem);
+
+ if (!ret)
+ f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
+ F2FS_BLKSIZE);
+
+ trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
+
+ return ret;
+}
+
+static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
+{
+ struct page *page = vmf->page;
+ struct inode *inode = file_inode(vmf->vma->vm_file);
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct dnode_of_data dn;
+ bool need_alloc = true;
+ int err = 0;
+
+ if (unlikely(IS_IMMUTABLE(inode)))
+ return VM_FAULT_SIGBUS;
+
+ if (is_inode_flag_set(inode, FI_COMPRESS_RELEASED))
+ return VM_FAULT_SIGBUS;
+
+ if (unlikely(f2fs_cp_error(sbi))) {
+ err = -EIO;
+ goto err;
+ }
+
+ if (!f2fs_is_checkpoint_ready(sbi)) {
+ err = -ENOSPC;
+ goto err;
+ }
+
+ err = f2fs_convert_inline_inode(inode);
+ if (err)
+ goto err;
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_compressed_file(inode)) {
+ int ret = f2fs_is_compressed_cluster(inode, page->index);
+
+ if (ret < 0) {
+ err = ret;
+ goto err;
+ } else if (ret) {
+ need_alloc = false;
+ }
+ }
+#endif
+ /* should do out of any locked page */
+ if (need_alloc)
+ f2fs_balance_fs(sbi, true);
+
+ sb_start_pagefault(inode->i_sb);
+
+ f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
+
+ file_update_time(vmf->vma->vm_file);
+ down_read(&F2FS_I(inode)->i_mmap_sem);
+ lock_page(page);
+ if (unlikely(page->mapping != inode->i_mapping ||
+ page_offset(page) > i_size_read(inode) ||
+ !PageUptodate(page))) {
+ unlock_page(page);
+ err = -EFAULT;
+ goto out_sem;
+ }
+
+ if (need_alloc) {
+ /* block allocation */
+ f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
+ set_new_dnode(&dn, inode, NULL, NULL, 0);
+ err = f2fs_get_block(&dn, page->index);
+ f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
+ }
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (!need_alloc) {
+ set_new_dnode(&dn, inode, NULL, NULL, 0);
+ err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
+ f2fs_put_dnode(&dn);
+ }
+#endif
+ if (err) {
+ unlock_page(page);
+ goto out_sem;
+ }
+
+ f2fs_wait_on_page_writeback(page, DATA, false, true);
+
+ /* wait for GCed page writeback via META_MAPPING */
+ f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
+
+ /*
+ * check to see if the page is mapped already (no holes)
+ */
+ if (PageMappedToDisk(page))
+ goto out_sem;
+
+ /* page is wholly or partially inside EOF */
+ if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
+ i_size_read(inode)) {
+ loff_t offset;
+
+ offset = i_size_read(inode) & ~PAGE_MASK;
+ zero_user_segment(page, offset, PAGE_SIZE);
+ }
+ set_page_dirty(page);
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
+
+ f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
+ f2fs_update_time(sbi, REQ_TIME);
+
+ trace_f2fs_vm_page_mkwrite(page, DATA);
+out_sem:
+ up_read(&F2FS_I(inode)->i_mmap_sem);
+
+ sb_end_pagefault(inode->i_sb);
+err:
+ return block_page_mkwrite_return(err);
+}
+
+static const struct vm_operations_struct f2fs_file_vm_ops = {
+ .fault = f2fs_filemap_fault,
+ .map_pages = filemap_map_pages,
+ .page_mkwrite = f2fs_vm_page_mkwrite,
+};
+
+static int get_parent_ino(struct inode *inode, nid_t *pino)
+{
+ struct dentry *dentry;
+
+ /*
+ * Make sure to get the non-deleted alias. The alias associated with
+ * the open file descriptor being fsync()'ed may be deleted already.
+ */
+ dentry = d_find_alias(inode);
+ if (!dentry)
+ return 0;
+
+ *pino = parent_ino(dentry);
+ dput(dentry);
+ return 1;
+}
+
+static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ enum cp_reason_type cp_reason = CP_NO_NEEDED;
+
+ if (!S_ISREG(inode->i_mode))
+ cp_reason = CP_NON_REGULAR;
+ else if (f2fs_compressed_file(inode))
+ cp_reason = CP_COMPRESSED;
+ else if (inode->i_nlink != 1)
+ cp_reason = CP_HARDLINK;
+ else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
+ cp_reason = CP_SB_NEED_CP;
+ else if (file_wrong_pino(inode))
+ cp_reason = CP_WRONG_PINO;
+ else if (!f2fs_space_for_roll_forward(sbi))
+ cp_reason = CP_NO_SPC_ROLL;
+ else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
+ cp_reason = CP_NODE_NEED_CP;
+ else if (test_opt(sbi, FASTBOOT))
+ cp_reason = CP_FASTBOOT_MODE;
+ else if (F2FS_OPTION(sbi).active_logs == 2)
+ cp_reason = CP_SPEC_LOG_NUM;
+ else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
+ f2fs_need_dentry_mark(sbi, inode->i_ino) &&
+ f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
+ TRANS_DIR_INO))
+ cp_reason = CP_RECOVER_DIR;
+ else if (f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
+ XATTR_DIR_INO))
+ cp_reason = CP_XATTR_DIR;
+
+ return cp_reason;
+}
+
+static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
+{
+ struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
+ bool ret = false;
+ /* But we need to avoid that there are some inode updates */
+ if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
+ ret = true;
+ f2fs_put_page(i, 0);
+ return ret;
+}
+
+static void try_to_fix_pino(struct inode *inode)
+{
+ struct f2fs_inode_info *fi = F2FS_I(inode);
+ nid_t pino;
+
+ down_write(&fi->i_sem);
+ if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
+ get_parent_ino(inode, &pino)) {
+ f2fs_i_pino_write(inode, pino);
+ file_got_pino(inode);
+ }
+ up_write(&fi->i_sem);
+}
+
+static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
+ int datasync, bool atomic)
+{
+ struct inode *inode = file->f_mapping->host;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ nid_t ino = inode->i_ino;
+ int ret = 0;
+ enum cp_reason_type cp_reason = 0;
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = LONG_MAX,
+ .for_reclaim = 0,
+ };
+ unsigned int seq_id = 0;
+
+ if (unlikely(f2fs_readonly(inode->i_sb)))
+ return 0;
+
+ trace_f2fs_sync_file_enter(inode);
+
+ if (S_ISDIR(inode->i_mode))
+ goto go_write;
+
+ /* if fdatasync is triggered, let's do in-place-update */
+ if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
+ set_inode_flag(inode, FI_NEED_IPU);
+ ret = file_write_and_wait_range(file, start, end);
+ clear_inode_flag(inode, FI_NEED_IPU);
+
+ if (ret || is_sbi_flag_set(sbi, SBI_CP_DISABLED)) {
+ trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
+ return ret;
+ }
+
+ /* if the inode is dirty, let's recover all the time */
+ if (!f2fs_skip_inode_update(inode, datasync)) {
+ f2fs_write_inode(inode, NULL);
+ goto go_write;
+ }
+
+ /*
+ * if there is no written data, don't waste time to write recovery info.
+ */
+ if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
+ !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
+
+ /* it may call write_inode just prior to fsync */
+ if (need_inode_page_update(sbi, ino))
+ goto go_write;
+
+ if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
+ f2fs_exist_written_data(sbi, ino, UPDATE_INO))
+ goto flush_out;
+ goto out;
+ }
+go_write:
+ /*
+ * Both of fdatasync() and fsync() are able to be recovered from
+ * sudden-power-off.
+ */
+ down_read(&F2FS_I(inode)->i_sem);
+ cp_reason = need_do_checkpoint(inode);
+ up_read(&F2FS_I(inode)->i_sem);
+
+ if (cp_reason) {
+ /* all the dirty node pages should be flushed for POR */
+ ret = f2fs_sync_fs(inode->i_sb, 1);
+
+ /*
+ * We've secured consistency through sync_fs. Following pino
+ * will be used only for fsynced inodes after checkpoint.
+ */
+ try_to_fix_pino(inode);
+ clear_inode_flag(inode, FI_APPEND_WRITE);
+ clear_inode_flag(inode, FI_UPDATE_WRITE);
+ goto out;
+ }
+sync_nodes:
+ atomic_inc(&sbi->wb_sync_req[NODE]);
+ ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
+ atomic_dec(&sbi->wb_sync_req[NODE]);
+ if (ret)
+ goto out;
+
+ /* if cp_error was enabled, we should avoid infinite loop */
+ if (unlikely(f2fs_cp_error(sbi))) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (f2fs_need_inode_block_update(sbi, ino)) {
+ f2fs_mark_inode_dirty_sync(inode, true);
+ f2fs_write_inode(inode, NULL);
+ goto sync_nodes;
+ }
+
+ /*
+ * If it's atomic_write, it's just fine to keep write ordering. So
+ * here we don't need to wait for node write completion, since we use
+ * node chain which serializes node blocks. If one of node writes are
+ * reordered, we can see simply broken chain, resulting in stopping
+ * roll-forward recovery. It means we'll recover all or none node blocks
+ * given fsync mark.
+ */
+ if (!atomic) {
+ ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
+ if (ret)
+ goto out;
+ }
+
+ /* once recovery info is written, don't need to tack this */
+ f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
+ clear_inode_flag(inode, FI_APPEND_WRITE);
+flush_out:
+ if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
+ ret = f2fs_issue_flush(sbi, inode->i_ino);
+ if (!ret) {
+ f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
+ clear_inode_flag(inode, FI_UPDATE_WRITE);
+ f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
+ }
+ f2fs_update_time(sbi, REQ_TIME);
+out:
+ trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
+ return ret;
+}
+
+int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
+{
+ if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
+ return -EIO;
+ return f2fs_do_sync_file(file, start, end, datasync, false);
+}
+
+static bool __found_offset(struct address_space *mapping, block_t blkaddr,
+ pgoff_t index, int whence)
+{
+ switch (whence) {
+ case SEEK_DATA:
+ if (__is_valid_data_blkaddr(blkaddr))
+ return true;
+ if (blkaddr == NEW_ADDR &&
+ xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
+ return true;
+ break;
+ case SEEK_HOLE:
+ if (blkaddr == NULL_ADDR)
+ return true;
+ break;
+ }
+ return false;
+}
+
+static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
+{
+ struct inode *inode = file->f_mapping->host;
+ loff_t maxbytes = inode->i_sb->s_maxbytes;
+ struct dnode_of_data dn;
+ pgoff_t pgofs, end_offset;
+ loff_t data_ofs = offset;
+ loff_t isize;
+ int err = 0;
+
+ inode_lock(inode);
+
+ isize = i_size_read(inode);
+ if (offset >= isize)
+ goto fail;
+
+ /* handle inline data case */
+ if (f2fs_has_inline_data(inode)) {
+ if (whence == SEEK_HOLE) {
+ data_ofs = isize;
+ goto found;
+ } else if (whence == SEEK_DATA) {
+ data_ofs = offset;
+ goto found;
+ }
+ }
+
+ pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
+
+ for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
+ set_new_dnode(&dn, inode, NULL, NULL, 0);
+ err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
+ if (err && err != -ENOENT) {
+ goto fail;
+ } else if (err == -ENOENT) {
+ /* direct node does not exists */
+ if (whence == SEEK_DATA) {
+ pgofs = f2fs_get_next_page_offset(&dn, pgofs);
+ continue;
+ } else {
+ goto found;
+ }
+ }
+
+ end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
+
+ /* find data/hole in dnode block */
+ for (; dn.ofs_in_node < end_offset;
+ dn.ofs_in_node++, pgofs++,
+ data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
+ block_t blkaddr;
+
+ blkaddr = f2fs_data_blkaddr(&dn);
+
+ if (__is_valid_data_blkaddr(blkaddr) &&
+ !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
+ blkaddr, DATA_GENERIC_ENHANCE)) {
+ f2fs_put_dnode(&dn);
+ goto fail;
+ }
+
+ if (__found_offset(file->f_mapping, blkaddr,
+ pgofs, whence)) {
+ f2fs_put_dnode(&dn);
+ goto found;
+ }
+ }
+ f2fs_put_dnode(&dn);
+ }
+
+ if (whence == SEEK_DATA)
+ goto fail;
+found:
+ if (whence == SEEK_HOLE && data_ofs > isize)
+ data_ofs = isize;
+ inode_unlock(inode);
+ return vfs_setpos(file, data_ofs, maxbytes);
+fail:
+ inode_unlock(inode);
+ return -ENXIO;
+}
+
+static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
+{
+ struct inode *inode = file->f_mapping->host;
+ loff_t maxbytes = inode->i_sb->s_maxbytes;
+
+ if (f2fs_compressed_file(inode))
+ maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
+
+ switch (whence) {
+ case SEEK_SET:
+ case SEEK_CUR:
+ case SEEK_END:
+ return generic_file_llseek_size(file, offset, whence,
+ maxbytes, i_size_read(inode));
+ case SEEK_DATA:
+ case SEEK_HOLE:
+ if (offset < 0)
+ return -ENXIO;
+ return f2fs_seek_block(file, offset, whence);
+ }
+
+ return -EINVAL;
+}
+
+static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct inode *inode = file_inode(file);
+
+ if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
+ return -EIO;
+
+ if (!f2fs_is_compress_backend_ready(inode))
+ return -EOPNOTSUPP;
+
+ file_accessed(file);
+ vma->vm_ops = &f2fs_file_vm_ops;
+ 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(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(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 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;
+
+ if (!in_group_p(inode->i_gid) &&
+ !capable_wrt_inode_uidgid(inode, CAP_FSETID))
+ mode &= ~S_ISGID;
+ set_acl_inode(inode, mode);
+ }
+}
+#else
+#define __setattr_copy setattr_copy
+#endif
+
+int f2fs_setattr(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(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(inode, attr);
+
+ if (attr->ia_valid & ATTR_MODE) {
+ err = posix_acl_chmod(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,
+};
+
+static int fill_zero(struct inode *inode, pgoff_t index,
+ loff_t start, loff_t len)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct page *page;
+
+ if (!len)
+ return 0;
+
+ f2fs_balance_fs(sbi, true);
+
+ f2fs_lock_op(sbi);
+ page = f2fs_get_new_data_page(inode, NULL, index, false);
+ f2fs_unlock_op(sbi);
+
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+
+ f2fs_wait_on_page_writeback(page, DATA, true, true);
+ zero_user(page, start, len);
+ set_page_dirty(page);
+ f2fs_put_page(page, 1);
+ return 0;
+}
+
+int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
+{
+ int err;
+
+ while (pg_start < pg_end) {
+ struct dnode_of_data dn;
+ pgoff_t end_offset, count;
+
+ set_new_dnode(&dn, inode, NULL, NULL, 0);
+ err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
+ if (err) {
+ if (err == -ENOENT) {
+ pg_start = f2fs_get_next_page_offset(&dn,
+ pg_start);
+ continue;
+ }
+ return err;
+ }
+
+ end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
+ count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
+
+ f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
+
+ f2fs_truncate_data_blocks_range(&dn, count);
+ f2fs_put_dnode(&dn);
+
+ pg_start += count;
+ }
+ return 0;
+}
+
+static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
+{
+ pgoff_t pg_start, pg_end;
+ loff_t off_start, off_end;
+ int ret;
+
+ ret = f2fs_convert_inline_inode(inode);
+ if (ret)
+ return ret;
+
+ pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
+ pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
+
+ off_start = offset & (PAGE_SIZE - 1);
+ off_end = (offset + len) & (PAGE_SIZE - 1);
+
+ if (pg_start == pg_end) {
+ ret = fill_zero(inode, pg_start, off_start,
+ off_end - off_start);
+ if (ret)
+ return ret;
+ } else {
+ if (off_start) {
+ ret = fill_zero(inode, pg_start++, off_start,
+ PAGE_SIZE - off_start);
+ if (ret)
+ return ret;
+ }
+ if (off_end) {
+ ret = fill_zero(inode, pg_end, 0, off_end);
+ if (ret)
+ return ret;
+ }
+
+ if (pg_start < pg_end) {
+ loff_t blk_start, blk_end;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+ f2fs_balance_fs(sbi, true);
+
+ blk_start = (loff_t)pg_start << PAGE_SHIFT;
+ blk_end = (loff_t)pg_end << PAGE_SHIFT;
+
+ down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
+ down_write(&F2FS_I(inode)->i_mmap_sem);
+
+ truncate_pagecache_range(inode, blk_start, blk_end - 1);
+
+ f2fs_lock_op(sbi);
+ ret = f2fs_truncate_hole(inode, pg_start, pg_end);
+ f2fs_unlock_op(sbi);
+
+ 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)
+ continue;
+
+ if (!f2fs_is_valid_blkaddr(sbi, dn->data_blkaddr,
+ DATA_GENERIC_ENHANCE)) {
+ ret = -EFSCORRUPTED;
+ break;
+ }
+
+ 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);
+
+ ret = file_modified(file);
+ if (ret)
+ goto out;
+
+ if (mode & FALLOC_FL_PUNCH_HOLE) {
+ if (offset >= inode->i_size)
+ goto out;
+
+ ret = punch_hole(inode, offset, len);
+ } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
+ ret = f2fs_collapse_range(inode, offset, len);
+ } else if (mode & FALLOC_FL_ZERO_RANGE) {
+ ret = f2fs_zero_range(inode, offset, len, mode);
+ } else if (mode & FALLOC_FL_INSERT_RANGE) {
+ ret = f2fs_insert_range(inode, offset, len);
+ } else {
+ ret = expand_inode_data(inode, offset, len, mode);
+ }
+
+ if (!ret) {
+ inode->i_mtime = inode->i_ctime = current_time(inode);
+ f2fs_mark_inode_dirty_sync(inode, false);
+ f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
+ }
+
+out:
+ inode_unlock(inode);
+
+ trace_f2fs_fallocate(inode, mode, offset, len, ret);
+ return ret;
+}
+
+static int f2fs_release_file(struct inode *inode, struct file *filp)
+{
+ /*
+ * f2fs_relase_file is called at every close calls. So we should
+ * not drop any inmemory pages by close called by other process.
+ */
+ if (!(filp->f_mode & FMODE_WRITE) ||
+ atomic_read(&inode->i_writecount) != 1)
+ return 0;
+
+ /* 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_GETFLAGS and FS_IOC_SETFLAGS 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.
+ */
+
+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_getflags(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ 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;
+
+ fsflags &= F2FS_GETTABLE_FS_FL;
+
+ return put_user(fsflags, (int __user *)arg);
+}
+
+static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct f2fs_inode_info *fi = F2FS_I(inode);
+ u32 fsflags, old_fsflags;
+ u32 iflags;
+ int ret;
+
+ if (!inode_owner_or_capable(inode))
+ return -EACCES;
+
+ if (get_user(fsflags, (int __user *)arg))
+ return -EFAULT;
+
+ if (fsflags & ~F2FS_GETTABLE_FS_FL)
+ return -EOPNOTSUPP;
+ fsflags &= F2FS_SETTABLE_FS_FL;
+
+ iflags = f2fs_fsflags_to_iflags(fsflags);
+ if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
+ return -EOPNOTSUPP;
+
+ ret = mnt_want_write_file(filp);
+ if (ret)
+ return ret;
+
+ inode_lock(inode);
+
+ old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
+ ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags);
+ if (ret)
+ goto out;
+
+ ret = f2fs_setflags_common(inode, iflags,
+ f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL));
+out:
+ inode_unlock(inode);
+ mnt_drop_write_file(filp);
+ return ret;
+}
+
+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 (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!inode_owner_or_capable(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 (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!inode_owner_or_capable(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 (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!inode_owner_or_capable(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 (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!inode_owner_or_capable(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 (!(filp->f_mode & FMODE_WRITE))
+ return -EBADF;
+
+ if (!inode_owner_or_capable(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:
+ sb = freeze_bdev(sb->s_bdev);
+ if (IS_ERR(sb)) {
+ ret = PTR_ERR(sb);
+ goto out;
+ }
+ if (sb) {
+ f2fs_stop_checkpoint(sbi, false);
+ set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
+ thaw_bdev(sb->s_bdev, sb);
+ }
+ 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;
+
+ transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
+ if (IS_ERR(transfer_to[PRJQUOTA]))
+ return PTR_ERR(transfer_to[PRJQUOTA]);
+
+ err = __dquot_transfer(inode, transfer_to);
+ if (err)
+ set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+ dqput(transfer_to[PRJQUOTA]);
+ return err;
+}
+
+static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
+{
+ struct inode *inode = file_inode(filp);
+ 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 file *filp, __u32 projid)
+{
+ if (projid != F2FS_DEF_PROJID)
+ return -EOPNOTSUPP;
+ return 0;
+}
+#endif
+
+/* FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR support */
+
+/*
+ * To make a new on-disk f2fs i_flag gettable via FS_IOC_FSGETXATTR and settable
+ * via FS_IOC_FSSETXATTR, add an entry for it to f2fs_xflags_map[], and add its
+ * FS_XFLAG_* equivalent to F2FS_SUPPORTED_XFLAGS.
+ */
+
+static const struct {
+ u32 iflag;
+ u32 xflag;
+} f2fs_xflags_map[] = {
+ { F2FS_SYNC_FL, FS_XFLAG_SYNC },
+ { F2FS_IMMUTABLE_FL, FS_XFLAG_IMMUTABLE },
+ { F2FS_APPEND_FL, FS_XFLAG_APPEND },
+ { F2FS_NODUMP_FL, FS_XFLAG_NODUMP },
+ { F2FS_NOATIME_FL, FS_XFLAG_NOATIME },
+ { F2FS_PROJINHERIT_FL, FS_XFLAG_PROJINHERIT },
+};
+
+#define F2FS_SUPPORTED_XFLAGS ( \
+ FS_XFLAG_SYNC | \
+ FS_XFLAG_IMMUTABLE | \
+ FS_XFLAG_APPEND | \
+ FS_XFLAG_NODUMP | \
+ FS_XFLAG_NOATIME | \
+ FS_XFLAG_PROJINHERIT)
+
+/* Convert f2fs on-disk i_flags to FS_IOC_FS{GET,SET}XATTR flags */
+static inline u32 f2fs_iflags_to_xflags(u32 iflags)
+{
+ u32 xflags = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
+ if (iflags & f2fs_xflags_map[i].iflag)
+ xflags |= f2fs_xflags_map[i].xflag;
+
+ return xflags;
+}
+
+/* Convert FS_IOC_FS{GET,SET}XATTR flags to f2fs on-disk i_flags */
+static inline u32 f2fs_xflags_to_iflags(u32 xflags)
+{
+ u32 iflags = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(f2fs_xflags_map); i++)
+ if (xflags & f2fs_xflags_map[i].xflag)
+ iflags |= f2fs_xflags_map[i].iflag;
+
+ return iflags;
+}
+
+static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
+{
+ struct f2fs_inode_info *fi = F2FS_I(inode);
+
+ simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
+
+ if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
+ fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
+}
+
+static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct fsxattr fa;
+
+ f2fs_fill_fsxattr(inode, &fa);
+
+ if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
+ return -EFAULT;
+ return 0;
+}
+
+static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct fsxattr fa, old_fa;
+ u32 iflags;
+ int err;
+
+ if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
+ return -EFAULT;
+
+ /* Make sure caller has proper permission */
+ if (!inode_owner_or_capable(inode))
+ return -EACCES;
+
+ if (fa.fsx_xflags & ~F2FS_SUPPORTED_XFLAGS)
+ return -EOPNOTSUPP;
+
+ iflags = f2fs_xflags_to_iflags(fa.fsx_xflags);
+ if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
+ return -EOPNOTSUPP;
+
+ err = mnt_want_write_file(filp);
+ if (err)
+ return err;
+
+ inode_lock(inode);
+
+ f2fs_fill_fsxattr(inode, &old_fa);
+ err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
+ if (err)
+ goto out;
+
+ err = f2fs_setflags_common(inode, iflags,
+ f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
+ if (err)
+ goto out;
+
+ err = f2fs_ioc_setproject(filp, fa.fsx_projid);
+out:
+ inode_unlock(inode);
+ mnt_drop_write_file(filp);
+ 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_pblk = 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)
+{
+ struct address_space *mapping = inode->i_mapping;
+ struct page *page;
+ pgoff_t redirty_idx = page_idx;
+ int i, page_len = 0, ret = 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_GETFLAGS:
+ return f2fs_ioc_getflags(filp, arg);
+ case FS_IOC_SETFLAGS:
+ return f2fs_ioc_setflags(filp, arg);
+ 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 FS_IOC_FSGETXATTR:
+ return f2fs_ioc_fsgetxattr(filp, arg);
+ case FS_IOC_FSSETXATTR:
+ return f2fs_ioc_fssetxattr(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_GETFLAGS:
+ cmd = FS_IOC_GETFLAGS;
+ break;
+ case FS_IOC32_SETFLAGS:
+ cmd = FS_IOC_SETFLAGS;
+ break;
+ 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 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 FS_IOC_FSGETXATTR:
+ case FS_IOC_FSSETXATTR:
+ 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,
+};