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| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2010-11-02 10:11:37 -0400 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2011-02-10 07:51:43 -0500 |
| commit | a5c96ebf1d71df0c5fb77ab58c9aeb307cf02372 (patch) | |
| tree | 5b5df6c3f421380d980fea21ccf055b9be364741 /include/linux/fs.h | |
| parent | a68a27b6f2354273bacc39c3dd06456edb202230 (diff) | |
| download | kernel_samsung_smdk4412-a5c96ebf1d71df0c5fb77ab58c9aeb307cf02372.zip kernel_samsung_smdk4412-a5c96ebf1d71df0c5fb77ab58c9aeb307cf02372.tar.gz kernel_samsung_smdk4412-a5c96ebf1d71df0c5fb77ab58c9aeb307cf02372.tar.bz2 | |
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: Mimi Zohar <zohar@us.ibm.com>
Acked-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index ef85322..a3e8f02 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -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); |