[U-Boot] [PATCH v2 2/4] ubifs: Add functions for generic fs use

[Heiko Schocher <hs@denx.de>]

Hello Hans,

Am 22.08.2015 um 20:04 schrieb Hans de Goede:
> Implement the necessary functions for implementing generic fs support
> for ubifs.
>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
> ---
>   fs/ubifs/ubifs.c      | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++
>   include/ubifs_uboot.h |  4 ++++
>   2 files changed, 66 insertions(+)

Reviewed-by: Heiko Schocher <hs@denx.de>

bye,
Heiko
>
> diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
> index 5af861c..89f1f2a 100644
> --- a/fs/ubifs/ubifs.c
> +++ b/fs/ubifs/ubifs.c
> @@ -568,6 +568,22 @@ static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
>   	return 0;
>   }
>
> +int ubifs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
> +{
> +	/* Check that ubifs is mounted and that we are not being a blkdev */
> +	if (!ubifs_mounted) {
> +		printf("UBIFS not mounted, use ubifsmount to mount volume first!\n");
> +		return -1;
> +	}
> +
> +	if (rbdd) {
> +		printf("UBIFS cannot be used with normal block devices\n");
> +		return -1;
> +	}
> +
> +	return 0;
> +}
> +
>   int ubifs_ls(const char *filename)
>   {
>   	struct ubifs_info *c = ubifs_sb->s_fs_info;
> @@ -616,6 +632,48 @@ out:
>   	return ret;
>   }
>
> +int ubifs_exists(const char *filename)
> +{
> +	struct ubifs_info *c = ubifs_sb->s_fs_info;
> +	unsigned long inum;
> +
> +	c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
> +	inum = ubifs_findfile(ubifs_sb, (char *)filename);
> +	ubi_close_volume(c->ubi);
> +
> +	return inum != 0;
> +}
> +
> +int ubifs_size(const char *filename, loff_t *size)
> +{
> +	struct ubifs_info *c = ubifs_sb->s_fs_info;
> +	unsigned long inum;
> +	struct inode *inode;
> +	int err = 0;
> +
> +	c->ubi = ubi_open_volume(c->vi.ubi_num, c->vi.vol_id, UBI_READONLY);
> +
> +	inum = ubifs_findfile(ubifs_sb, (char *)filename);
> +	if (!inum) {
> +		err = -1;
> +		goto out;
> +	}
> +
> +	inode = ubifs_iget(ubifs_sb, inum);
> +	if (IS_ERR(inode)) {
> +		printf("%s: Error reading inode %ld!\n", __func__, inum);
> +		err = PTR_ERR(inode);
> +		goto out;
> +	}
> +
> +	*size = inode->i_size;
> +
> +	ubifs_iput(inode);
> +out:
> +	ubi_close_volume(c->ubi);
> +	return err;
> +}
> +
>   /*
>    * ubifsload...
>    */
> @@ -873,6 +931,10 @@ out:
>   	return err;
>   }
>
> +void ubifs_close(void)
> +{
> +}
> +
>   /* Compat wrappers for common/cmd_ubifs.c */
>   int ubifs_load(char *filename, u32 addr, u32 size)
>   {
> diff --git a/include/ubifs_uboot.h b/include/ubifs_uboot.h
> index d10a909..c600e38 100644
> --- a/include/ubifs_uboot.h
> +++ b/include/ubifs_uboot.h
> @@ -22,8 +22,12 @@ int uboot_ubifs_mount(char *vol_name);
>   void uboot_ubifs_umount(void);
>   int ubifs_load(char *filename, u32 addr, u32 size);
>
> +int ubifs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
>   int ubifs_ls(const char *dir_name);
> +int ubifs_exists(const char *filename);
> +int ubifs_size(const char *filename, loff_t *size);
>   int ubifs_read(const char *filename, void *buf, loff_t offset,
>   	       loff_t size, loff_t *actread);
> +void ubifs_close(void);
>
>   #endif /* __UBIFS_UBOOT_H__ */
>

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