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SubjectRe: [PATCH] f2fs: add compat_ioctl to provide backward compatability
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Hi Jaegeuk.

Oops!, I was missing include header.
Sorry, I will send v2 patch again.

Thanks.

2013/2/4, Namjae Jeon <linkinjeon@gmail.com>:
> From: Namjae Jeon <namjae.jeon@samsung.com>
>
> adding compat_ioctl to provide support for backward comptability - 32bit
> binary
> execution on 64bit kernel.
>
> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
> ---
> fs/f2fs/f2fs.h | 15 +++++++++++++++
> fs/f2fs/file.c | 20 ++++++++++++++++++++
> 2 files changed, 35 insertions(+)
>
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 58dd608..7bf86c8 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -104,6 +104,20 @@ static inline int update_sits_in_cursum(struct
> f2fs_summary_block *rs, int i)
> }
>
> /*
> + * ioctl commands
> + */
> +#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
> +#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
> +
> +#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
> +/*
> + * ioctl commands in 32 bit emulation
> + */
> +#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
> +#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
> +#endif
> +
> +/*
> * For INODE and NODE manager
> */
> #define XATTR_NODE_OFFSET (-1) /*
> @@ -850,6 +864,7 @@ void f2fs_truncate(struct inode *);
> int f2fs_setattr(struct dentry *, struct iattr *);
> int truncate_hole(struct inode *, pgoff_t, pgoff_t);
> long f2fs_ioctl(struct file *, unsigned int, unsigned long);
> +long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long);
>
> /*
> * inode.c
> diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> index 633667e..e79d26a 100644
> --- a/fs/f2fs/file.c
> +++ b/fs/f2fs/file.c
> @@ -644,6 +644,23 @@ out:
> }
> }
>
> +#ifdef CONFIG_COMPAT
> +long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long
> arg)
> +{
> + switch (cmd) {
> + case F2FS_IOC32_GETFLAGS:
> + cmd = F2FS_IOC_GETFLAGS;
> + break;
> + case F2FS_IOC32_SETFLAGS:
> + cmd = F2FS_IOC_SETFLAGS;
> + break;
> + default:
> + return -ENOIOCTLCMD;
> + }
> + return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
> +}
> +#endif
> +
> const struct file_operations f2fs_file_operations = {
> .llseek = generic_file_llseek,
> .read = do_sync_read,
> @@ -655,6 +672,9 @@ const struct file_operations f2fs_file_operations = {
> .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 = generic_file_splice_write,
> };
> --
> 1.7.9.5
>
>


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