/**
* ntfs_file_fsync - sync a file to disk
* @filp: file to be synced
* @dentry: dentry describing the file to sync
* @datasync: if non-zero only flush user data and not metadata
*
* Data integrity sync of a file to disk. Used for fsync, fdatasync, and msync
* system calls. This function is inspired by fs/buffer.c::file_fsync().
*
* If @datasync is false, write the mft record and all associated extent mft
* records as well as the $DATA attribute and then sync the block device.
*
* If @datasync is true and the attribute is non-resident, we skip the writing
* of the mft record and all associated extent mft records (this might still
* happen due to the write_inode_now() call).
*
* Also, if @datasync is true, we do not wait on the inode to be written out
* but we always wait on the page cache pages to be written out.
*
* Note: In the past @filp could be NULL so we ignore it as we don't need it
* anyway.
*
* Locking: Caller must hold i_sem on the inode.
*
* TODO: We should probably also write all attribute/index inodes associated
* with this inode but since we have no simple way of getting to them we ignore
* this problem for now.
*/
static int ntfs_file_fsync(struct file *filp, struct dentry *dentry,
int datasync)
{
struct inode *vi = dentry->d_inode;
int err, ret = 0;
ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
BUG_ON(S_ISDIR(vi->i_mode));
if (!datasync || !NInoNonResident(NTFS_I(vi)))
ret = ntfs_write_inode(vi, 1);
write_inode_now(vi, !datasync);
/*
* NOTE: If we were to use mapping->private_list (see ext2 and
* fs/buffer.c) for dirty blocks then we could optimize the below to be
* sync_mapping_buffers(vi->i_mapping).
*/
err = sync_blockdev(vi->i_sb->s_bdev);
if (unlikely(err && !ret))
ret = err;
if (likely(!ret))
ntfs_debug("Done.");
else
ntfs_warning(vi->i_sb, "Failed to f%ssync inode 0x%lx. Error "
"%u.", datasync ? "data" : "", vi->i_ino, -ret);
return ret;
}
int fsync_cmdline(struct file *f, int datasync)
{
struct cmdline_priv *p =
(struct cmdline_priv *)f->private_data;
sync_blockdev(p->bdev);
return 0;
}
int hpfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
struct inode *inode = file->f_mapping->host;
int ret;
ret = filemap_write_and_wait_range(file->f_mapping, start, end);
if (ret)
return ret;
return sync_blockdev(inode->i_sb->s_bdev);
}
/**
* journal_recover - recovers a on-disk journal
* @journal: the journal to recover
*
* The primary function for recovering the log contents when mounting a
* journaled device.
*
* Recovery is done in three passes. In the first pass, we look for the
* end of the log. In the second, we assemble the list of revoke
* blocks. In the third and final pass, we replay any un-revoked blocks
* in the log.
*/
int journal_recover(journal_t *journal)
{
int err, err2;
journal_superblock_t * sb;
struct recovery_info info;
memset(&info, 0, sizeof(info));
sb = journal->j_superblock;
/*
* The journal superblock's s_start field (the current log head)
* is always zero if, and only if, the journal was cleanly
* unmounted.
*/
if (!sb->s_start) {
jbd_debug(1, "No recovery required, last transaction %d\n",
ext2fs_be32_to_cpu(sb->s_sequence));
journal->j_transaction_sequence = ext2fs_be32_to_cpu(sb->s_sequence) + 1;
return 0;
}
err = do_one_pass(journal, &info, PASS_SCAN);
if (!err)
err = do_one_pass(journal, &info, PASS_REVOKE);
if (!err)
err = do_one_pass(journal, &info, PASS_REPLAY);
jbd_debug(1, "JBD2: recovery, exit status %d, "
"recovered transactions %u to %u\n",
err, info.start_transaction, info.end_transaction);
jbd_debug(1, "JBD2: Replayed %d and revoked %d/%d blocks\n",
info.nr_replays, info.nr_revoke_hits, info.nr_revokes);
/* Restart the log at the next transaction ID, thus invalidating
* any existing commit records in the log. */
journal->j_transaction_sequence = ++info.end_transaction;
journal_clear_revoke(journal);
err2 = sync_blockdev(journal->j_fs_dev);
if (!err)
err = err2;
/* Make sure all replayed data is on permanent storage */
if (journal->j_flags & JFS_BARRIER) {
err2 = blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
if (!err)
err = err2;
}
return err;
}
INT32 bdev_sync(struct super_block *sb)
{
BD_INFO_T *p_bd = &(EXFAT_SB(sb)->bd_info);
#if EXFAT_CONFIG_KERNEL_DEBUG
struct exfat_sb_info *sbi = EXFAT_SB(sb);
long flags = sbi->debug_flags;
if (flags & EXFAT_DEBUGFLAGS_ERROR_RW) return (FFS_MEDIAERR);
#endif /* EXFAT_CONFIG_KERNEL_DEBUG */
if (!p_bd->opened) return(FFS_MEDIAERR);
return sync_blockdev(sb->s_bdev);
}
static void emmc_panic_erase(unsigned char *buffer, Sector *sect)
{
struct emmc_ipanic_data *ctx = &drv_ctx;
struct mmc_emergency_info *emmc = ctx->emmc;
unsigned char *read_buf_ptr = buffer;
Sector new_sect;
int rc;
if (!emmc) {
pr_err("%s:invalid emmc infomation\n", __func__);
return;
}
if (!read_buf_ptr || !sect) {
sect = &new_sect;
if (!emmc->bdev) {
pr_err("%s:invalid emmc block device\n",
__func__);
goto out;
}
/* make sure the block device is open rw */
rc = blkdev_get(emmc->bdev, FMODE_READ | FMODE_WRITE, emmc_panic_erase);
if (rc < 0) {
pr_err("%s: blk_dev_get failed!\n", __func__);
goto out;
}
/*read panic header */
read_buf_ptr =
read_dev_sector(emmc->bdev, emmc->start_block, sect);
if (!read_buf_ptr) {
pr_err("%s: read sector error(%llu)!\n",
__func__, (u64) emmc->start_block);
goto out;
}
}
/*write all zero to panic header */
lock_page(sect->v);
memset(read_buf_ptr, 0, SECTOR_SIZE);
set_page_dirty(sect->v);
unlock_page(sect->v);
sync_blockdev(emmc->bdev);
if (!read_buf_ptr)
put_dev_sector(*sect);
out:
memset(&ctx->hdr, 0, SECTOR_SIZE);
return;
}
static void unmark_dirty(struct super_block *s)
{
struct buffer_head *bh;
struct hpfs_spare_block *sb;
if (s->s_flags & MS_RDONLY) return;
sync_blockdev(s->s_bdev);
if ((sb = hpfs_map_sector(s, 17, &bh, 0))) {
sb->dirty = hpfs_sb(s)->sb_chkdsk > 1 - hpfs_sb(s)->sb_was_error;
sb->old_wrote = hpfs_sb(s)->sb_chkdsk >= 2 && !hpfs_sb(s)->sb_was_error;
mark_buffer_dirty(bh);
sync_dirty_buffer(bh);
brelse(bh);
}
}
s32 bdev_sync_all(struct super_block *sb)
{
FS_INFO_T *fsi = &(SDFAT_SB(sb)->fsi);
#ifdef CONFIG_SDFAT_DBG_IOCTL
struct sdfat_sb_info *sbi = SDFAT_SB(sb);
long flags = sbi->debug_flags;
if (flags & SDFAT_DEBUGFLAGS_ERROR_RW)
return -EIO;
#endif /* CONFIG_SDFAT_DBG_IOCTL */
if (!fsi->bd_opened)
return -EIO;
return sync_blockdev(sb->s_bdev);
}
/**
* jbd2_journal_recover - recovers a on-disk journal
* @journal: the journal to recover
*
* The primary function for recovering the log contents when mounting a
* journaled device.
*
* Recovery is done in three passes. In the first pass, we look for the
* end of the log. In the second, we assemble the list of revoke
* blocks. In the third and final pass, we replay any un-revoked blocks
* in the log.
*/
int jbd2_journal_recover(journal_t *journal)
{
int err;
journal_superblock_t * sb;
struct recovery_info info;
memset(&info, 0, sizeof(info));
sb = journal->j_superblock;
/*
* The journal superblock's s_start field (the current log head)
* is always zero if, and only if, the journal was cleanly
* unmounted.
*/
if (!sb->s_start) {
jbd_debug(1, "No recovery required, last transaction %d\n",
be32_to_cpu(sb->s_sequence));
journal->j_transaction_sequence = be32_to_cpu(sb->s_sequence) + 1;
return 0;
}
err = do_one_pass(journal, &info, PASS_SCAN);
if (!err)
err = do_one_pass(journal, &info, PASS_REVOKE);
if (!err)
err = do_one_pass(journal, &info, PASS_REPLAY);
jbd_debug(1, "JBD: recovery, exit status %d, "
"recovered transactions %u to %u\n",
err, info.start_transaction, info.end_transaction);
jbd_debug(1, "JBD: Replayed %d and revoked %d/%d blocks\n",
info.nr_replays, info.nr_revoke_hits, info.nr_revokes);
/* Restart the log at the next transaction ID, thus invalidating
* any existing commit records in the log. */
journal->j_transaction_sequence = ++info.end_transaction;
jbd2_journal_clear_revoke(journal);
sync_blockdev(journal->j_fs_dev);
return err;
}
/*
* Generic function to fsync a file.
*/
int file_fsync(struct file *filp, int datasync)
{
struct inode *inode = filp->f_mapping->host;
struct super_block * sb;
int ret, err;
/* sync the inode to buffers */
ret = write_inode_now(inode, 0);
/* sync the superblock to buffers */
sb = inode->i_sb;
if (sb->s_dirt && sb->s_op->write_super)
sb->s_op->write_super(sb);
/* .. finally sync the buffers to disk */
err = sync_blockdev(sb->s_bdev);
if (!ret)
ret = err;
return ret;
}
int jbd2_journal_recover(journal_t *journal)
{
int err, err2;
journal_superblock_t * sb;
struct recovery_info info;
memset(&info, 0, sizeof(info));
sb = journal->j_superblock;
if (!sb->s_start) {
jbd_debug(1, "No recovery required, last transaction %d\n",
be32_to_cpu(sb->s_sequence));
journal->j_transaction_sequence = be32_to_cpu(sb->s_sequence) + 1;
return 0;
}
err = do_one_pass(journal, &info, PASS_SCAN);
if (!err)
err = do_one_pass(journal, &info, PASS_REVOKE);
if (!err)
err = do_one_pass(journal, &info, PASS_REPLAY);
jbd_debug(1, "JBD2: recovery, exit status %d, "
"recovered transactions %u to %u\n",
err, info.start_transaction, info.end_transaction);
jbd_debug(1, "JBD2: Replayed %d and revoked %d/%d blocks\n",
info.nr_replays, info.nr_revoke_hits, info.nr_revokes);
journal->j_transaction_sequence = ++info.end_transaction;
jbd2_journal_clear_revoke(journal);
err2 = sync_blockdev(journal->j_fs_dev);
if (!err)
err = err2;
if (journal->j_flags & JBD2_BARRIER)
blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL);
return err;
}
/**
* ntfs_file_fsync - sync a file to disk
* @filp: file to be synced
* @dentry: dentry describing the file to sync
* @datasync: if non-zero only flush user data and not metadata
*
* Data integrity sync of a file to disk. Used for fsync, fdatasync, and msync
* system calls. This function is inspired by fs/buffer.c::file_fsync().
*
* If @datasync is false, write the mft record and all associated extent mft
* records as well as the $DATA attribute and then sync the block device.
*
* If @datasync is true and the attribute is non-resident, we skip the writing
* of the mft record and all associated extent mft records (this might still
* happen due to the write_inode_now() call).
*
* Also, if @datasync is true, we do not wait on the inode to be written out
* but we always wait on the page cache pages to be written out.
*
* Note: In the past @filp could be NULL so we ignore it as we don't need it
* anyway.
*
* Locking: Caller must hold i_sem on the inode.
*
* TODO: We should probably also write all attribute/index inodes associated
* with this inode but since we have no simple way of getting to them we ignore
* this problem for now.
*/
static int ntfs_file_fsync(struct file *filp, struct dentry *dentry,
int datasync)
{
struct inode *vi = dentry->d_inode;
int err, ret = 0;
ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
BUG_ON(S_ISDIR(vi->i_mode));
if (!datasync || !NInoNonResident(NTFS_I(vi)))
ret = ntfs_write_inode(vi, 1);
write_inode_now(vi, !datasync);
err = sync_blockdev(vi->i_sb->s_bdev);
if (unlikely(err && !ret))
ret = err;
if (likely(!ret))
ntfs_debug("Done.");
else
ntfs_warning(vi->i_sb, "Failed to f%ssync inode 0x%lx. Error "
"%u.", datasync ? "data" : "", vi->i_ino, -ret);
return ret;
}
/*
* Generic function to fsync a file.
*
* filp may be NULL if called via the msync of a vma.
*/
int file_fsync(struct file *filp, struct dentry *dentry, int datasync)
{
struct inode * inode = dentry->d_inode;
struct super_block * sb;
int ret, err;
/* sync the inode to buffers */
ret = write_inode_now(inode, 0);
/* sync the superblock to buffers */
sb = inode->i_sb;
lock_super(sb);
if (is_sb_dirty(sb) && sb->s_op->write_super)
sb->s_op->write_super(sb);
unlock_super(sb);
/* .. finally sync the buffers to disk */
err = sync_blockdev(sb->s_bdev);
if (!ret)
ret = err;
return ret;
}
INT
Ext2RecoverJournal(
PEXT2_IRP_CONTEXT IrpContext,
PEXT2_VCB Vcb
)
{
INT rc = 0;
ULONG jNo = 0;
PEXT2_MCB jcb = NULL;
struct block_device * bd = &Vcb->bd;
#ifndef __REACTOS__
struct super_block * sb = &Vcb->sb;
#endif
struct inode * ji = NULL;
journal_t * journal = NULL;
struct ext3_super_block *esb;
/* check journal inode number */
if (!Ext2CheckJournal(Vcb, &jNo)) {
return -1;
}
/* allocate journal Mcb */
jcb = Ext2LoadInternalJournal(Vcb, jNo);
if (!jcb) {
rc = -6;
goto errorout;
}
/* allocate journal inode */
ji = &jcb->Inode;
/* initialize journal file from inode */
journal = journal_init_inode(ji);
/* initialzation succeeds ? */
if (!journal) {
iput(ji);
rc = -8;
goto errorout;
}
/* start journal recovery */
rc = journal_load(journal);
if (0 != rc) {
rc = -9;
DbgPrint("Ext2Fsd: recover_journal: failed "
"to recover journal data.\n");
}
/* reload super_block and group_description */
Ext2RefreshSuper(IrpContext, Vcb);
Ext2RefreshGroup(IrpContext, Vcb);
/* wipe journal data and clear recover flag in sb */
if (rc == 0) {
journal_wipe_recovery(journal);
ClearLongFlag(
Vcb->SuperBlock->s_feature_incompat,
EXT3_FEATURE_INCOMPAT_RECOVER );
Ext2SaveSuper(IrpContext, Vcb);
sync_blockdev(bd);
ClearLongFlag(Vcb->Flags, VCB_JOURNAL_RECOVER);
}
errorout:
/* destroy journal structure */
if (journal) {
journal_destroy(journal);
}
/* destory journal Mcb */
if (jcb) {
Ext2FreeMcb(Vcb, jcb);
}
return rc;
}
int intel_scu_ipc_write_umip(u8 *data, int len, int offset)
{
int i, ret = 0, offset_align;
int remainder, len_align = 0;
u32 dptr, sptr, cmd;
u8 cs, tbl_cs = 0, *buf = NULL;
Sector sect;
struct block_device *bdev;
char *buffer = NULL;
int *holderId = NULL;
int sect_no;
u8 checksum;
if (intel_mid_identify_cpu() == INTEL_MID_CPU_CHIP_CLOVERVIEW) {
/* Opening the mmcblk0boot0 */
bdev = get_emmc_bdev();
if (bdev == NULL) {
pr_err("%s: get_emmc failed!\n", __func__);
return -ENODEV;
}
/* make sure the block device is open rw */
ret = blkdev_get(bdev, FMODE_READ|FMODE_WRITE, holderId);
if (ret < 0) {
pr_err("%s: blk_dev_get failed!\n", __func__);
return -ret;
}
/* get memmap of the UMIP header */
sect_no = offset / SECTOR_SIZE;
remainder = offset % SECTOR_SIZE;
buffer = read_dev_sector(bdev, sect_no +
UMIP_HEADER_HEADROOM_SECTOR, §);
/* Shouldn't need to access UMIP sector 0/1 */
if (sect_no < UMIP_TOTAL_HEADER_SECTOR_NO) {
pr_err("invalid umip offset\n");
ret = -EINVAL;
goto bd_put;
} else if (data == NULL || buffer == NULL) {
pr_err("buffer is empty\n");
ret = -ENODEV;
goto bd_put;
} else if (len > (SECTOR_SIZE - remainder)) {
pr_err("too much data to write\n");
ret = -EINVAL;
goto bd_put;
}
lock_page(sect.v);
memcpy(buffer + remainder, data, len);
checksum = calc_checksum(buffer, SECTOR_SIZE);
set_page_dirty(sect.v);
unlock_page(sect.v);
sync_blockdev(bdev);
put_dev_sector(sect);
/*
* Updating the checksum, sector 0 (starting from UMIP
* offset 0x08), we maintains 4 bytes for tracking each of
* sector changes individually. For example, the dword at
* offset 0x08 is used to checksum data integrity of sector
* number 2, and so on so forth. It's worthnoting that only
* the first byte in each 4 bytes stores checksum.
* For detail, please check CTP FAS UMIP header definition
*/
buffer = read_dev_sector(bdev, UMIP_HEADER_SECTOR +
UMIP_HEADER_HEADROOM_SECTOR, §);
if (buffer == NULL) {
pr_err("buffer is empty\n");
ret = -ENODEV;
goto bd_put;
}
lock_page(sect.v);
memcpy(buffer + 4 * (sect_no - UMIP_TOTAL_HEADER_SECTOR_NO) +
UMIP_START_CHKSUM_ADDR, &checksum, 1/* one byte */);
/* Change UMIP prologue chksum to zero */
*(buffer + UMIP_HEADER_CHKSUM_ADDR) = 0;
for (i = 0; i < UMIP_TOTAL_CHKSUM_ENTRY; i++) {
tbl_cs ^= *(u8 *)(buffer + 4 * i +
UMIP_START_CHKSUM_ADDR);
}
/* Finish up with re-calcuating UMIP prologue checksum */
cs = dword_to_byte_chksum(xorblock((u32 *)buffer,
SECTOR_SIZE));
*(buffer + UMIP_HEADER_CHKSUM_ADDR) = tbl_cs ^ cs;
set_page_dirty(sect.v);
unlock_page(sect.v);
sync_blockdev(bdev);
bd_put:
if (buffer)
put_dev_sector(sect);
blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
return ret;
} else {
if (!intel_mip_base)
return -ENODEV;
if (offset + len > IPC_MIP_MAX_ADDR)
return -EINVAL;
rpmsg_global_lock();
offset_align = offset & (~0x3);
len_align = (len + (offset - offset_align) + 3) & (~0x3);
if (len != len_align) {
buf = kzalloc(len_align, GFP_KERNEL);
if (!buf) {
pr_err("Alloc memory failed\n");
ret = -ENOMEM;
goto fail;
}
ret = read_mip(buf, len_align, offset_align, 0);
if (ret)
goto fail;
memcpy(buf + offset - offset_align, data, len);
} else {
buf = data;
}
dptr = offset_align;
sptr = len_align / 4;
cmd = IPC_CMD_UMIP_WR << 12 | IPCMSG_MIP_ACCESS;
memcpy(intel_mip_base, buf, len_align);
ret = rpmsg_send_raw_command(mip_instance, cmd, 0, NULL,
NULL, 0, 0, sptr, dptr);
fail:
if (buf && len_align != len)
kfree(buf);
rpmsg_global_unlock();
return ret;
}
}
void ocfs2_sync_blockdev(struct super_block *sb)
{
sync_blockdev(sb->s_bdev);
}
static int access_osip_record(osip_callback_t callback, void *cb_data)
{
Sector sect;
struct block_device *bdev;
char *buffer;
struct OSIP_header *osip;
struct OSIP_header *osip_backup;
int ret = 0;
int dirty = 0;
bdev = get_emmc_bdev();
if (bdev == NULL) {
pr_err("%s: get_emmc failed!\n", __func__);
return -ENODEV;
}
/* make sure the block device is open rw */
ret = blkdev_get(bdev, FMODE_READ|FMODE_WRITE, NULL);
if (ret < 0) {
pr_err("%s: blk_dev_get failed!\n", __func__);
return -ret;
}
/* get memmap of the OSIP header */
buffer = read_dev_sector(bdev, 0, §);
if (buffer == NULL) {
ret = -ENODEV;
goto bd_put;
}
osip = (struct OSIP_header *) buffer;
/* some sanity checks */
if (osip->header_size <= 0 || osip->header_size > PAGE_SIZE) {
pr_err("%s: corrupted osip!\n", __func__);
ret = -EINVAL;
goto put_sector;
}
if (calc_checksum(osip, osip->header_size) != 0) {
pr_err("%s: corrupted osip!\n", __func__);
ret = -EINVAL;
goto put_sector;
}
/* store the OSIP backup which will be used to recover in PrOS */
osip_backup = kmalloc(sizeof(struct OSIP_header), GFP_KERNEL);
if (osip_backup == NULL)
goto put_sector;
memcpy(osip_backup, osip, sizeof(struct OSIP_header));
lock_page(sect.v);
dirty = callback(osip, cb_data);
if (dirty) {
memcpy(buffer + OSIP_BACKUP_OFFSET, osip_backup,
sizeof(struct OSIP_header));
osip->header_checksum = 0;
osip->header_checksum = calc_checksum(osip, osip->header_size);
set_page_dirty(sect.v);
}
unlock_page(sect.v);
sync_blockdev(bdev);
kfree(osip_backup);
put_sector:
put_dev_sector(sect);
bd_put:
blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
return 0;
}
