On Wednesday 15 January 2020 17:24:36 Namjae Jeon wrote:
> This adds the implementation of inode operations for exfat.
>
> Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
> Signed-off-by: Sungjong Seo <sj1557.seo@xxxxxxxxxxx>
> ---
> fs/exfat/inode.c | 667 +++++++++++++++++++++
> fs/exfat/namei.c | 1442 ++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 2109 insertions(+)
> create mode 100644 fs/exfat/inode.c
> create mode 100644 fs/exfat/namei.c
>
> diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
> new file mode 100644
> index 000000000000..56cf09db1920
> --- /dev/null
> +++ b/fs/exfat/inode.c
> @@ -0,0 +1,667 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/buffer_head.h>
> +#include <linux/mpage.h>
> +#include <linux/bio.h>
> +#include <linux/blkdev.h>
> +#include <linux/time.h>
> +#include <linux/writeback.h>
> +#include <linux/uio.h>
> +#include <linux/random.h>
> +#include <linux/iversion.h>
> +
> +#include "exfat_raw.h"
> +#include "exfat_fs.h"
> +
> +static int __exfat_write_inode(struct inode *inode, int sync)
> +{
> + int ret = -EIO;
> + unsigned long long on_disk_size;
> + struct exfat_dentry *ep, *ep2;
> + struct exfat_entry_set_cache *es = NULL;
> + struct super_block *sb = inode->i_sb;
> + struct exfat_sb_info *sbi = EXFAT_SB(sb);
> + struct exfat_inode_info *ei = EXFAT_I(inode);
> + bool is_dir = (ei->type == TYPE_DIR) ? true : false;
> +
> + if (inode->i_ino == EXFAT_ROOT_INO)
> + return 0;
> +
> + /*
> + * If the indode is already unlinked, there is no need for updating it.
> + */
> + if (ei->dir.dir == DIR_DELETED)
> + return 0;
> +
> + if (is_dir && ei->dir.dir == sbi->root_dir && ei->entry == -1)
> + return 0;
> +
> + exfat_set_vol_flags(sb, VOL_DIRTY);
> +
> + /* get the directory entry of given file or directory */
> + es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry, ES_ALL_ENTRIES,
> + &ep);
> + if (!es)
> + return -EIO;
> + ep2 = ep + 1;
> +
> + ep->dentry.file.attr = cpu_to_le16(exfat_make_attr(inode));
> +
> + /* set FILE_INFO structure using the acquired struct exfat_dentry */
> + exfat_set_entry_time(sbi, &inode->i_ctime,
> + &ep->dentry.file.create_time,
> + &ep->dentry.file.create_date,
> + &ep->dentry.file.create_tz);
And here is missing updating of create_time_ms entry too.
> + exfat_set_entry_time(sbi, &inode->i_mtime,
> + &ep->dentry.file.modify_time,
> + &ep->dentry.file.modify_date,
> + &ep->dentry.file.modify_tz);
And here modify_time_ms too.
> + exfat_set_entry_time(sbi, &inode->i_atime,
> + &ep->dentry.file.access_time,
> + &ep->dentry.file.access_date,
> + &ep->dentry.file.access_tz);
> +
> + /* File size should be zero if there is no cluster allocated */
> + on_disk_size = i_size_read(inode);
> +
> + if (ei->start_clu == EXFAT_EOF_CLUSTER)
> + on_disk_size = 0;
> +
> + ep2->dentry.stream.valid_size = cpu_to_le64(on_disk_size);
> + ep2->dentry.stream.size = ep2->dentry.stream.valid_size;
> +
> + ret = exfat_update_dir_chksum_with_entry_set(sb, es, sync);
> + kfree(es);
> + return ret;
> +}
--
Pali Rohár
pali.rohar@xxxxxxxxx
