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Commit a5c96ebf authored by Mimi Zohar's avatar Mimi Zohar
Browse files

IMA: define readcount functions 



Define i_readcount_inc/dec() functions to be called from the VFS layer.

Changelog:
- renamed iget/iput_readcount to i_readcount_inc/dec (Dave Chinner's suggestion)
- removed i_lock in iput_readcount() (based on comments:Dave Chinner,Eric Paris)

Signed-off-by: default avatarMimi Zohar <zohar@us.ibm.com>
Acked-by: default avatarEric Paris <eparis@redhat.com>
parent a68a27b6

include/linux/fs.h

+20 −0
Original line number Diff line number Diff line
@@ -2186,6 +2186,26 @@ static inline void allow_write_access(struct file *file) 
	if (file)

		atomic_inc(&file->f_path.dentry->d_inode->i_writecount);

}

#ifdef CONFIG_IMA

static inline void i_readcount_dec(struct inode *inode)

{

	BUG_ON(!atomic_read(&inode->i_readcount));

	atomic_dec(&inode->i_readcount);

}

static inline void i_readcount_inc(struct inode *inode)

{

	atomic_inc(&inode->i_readcount);

}

#else

static inline void i_readcount_dec(struct inode *inode)

{

	return;

}

static inline void i_readcount_inc(struct inode *inode)

{

	return;

}

#endif

extern int do_pipe_flags(int *, int);

extern struct file *create_read_pipe(struct file *f, int flags);

extern struct file *create_write_pipe(int flags);