diff options
| author | Chao Yu <chao2.yu@samsung.com> | 2015-01-23 20:36:04 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-02-11 17:04:35 -0800 |
| commit | d49f3e890290bd1db047d02335401026d1886472 (patch) | |
| tree | 37195404f8492f5fa2620db857b3fa0160a44214 /fs/f2fs | |
| parent | bc4a1f873b9db010f5b0971ee5f2987d9be32c36 (diff) | |
f2fs: add F2FS_IOC_GETVERSION support
In this patch we add the FS_IOC_GETVERSION ioctl for getting i_generation from
inode, after that, users can list file's generation number by using "lsattr -v".
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/f2fs.h | 1 | ||||
| -rw-r--r-- | fs/f2fs/file.c | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 1795ce231118..5e16085d98d3 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -202,6 +202,7 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, */ #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS +#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION #define F2FS_IOCTL_MAGIC 0xf5 #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 710adc987937..ec17d05d6553 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -926,6 +926,13 @@ out: return ret; } +static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) +{ + struct inode *inode = file_inode(filp); + + return put_user(inode->i_generation, (int __user *)arg); +} + static int f2fs_ioc_start_atomic_write(struct file *filp) { struct inode *inode = file_inode(filp); @@ -1061,6 +1068,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return f2fs_ioc_getflags(filp, arg); case F2FS_IOC_SETFLAGS: return f2fs_ioc_setflags(filp, arg); + case F2FS_IOC_GETVERSION: + return f2fs_ioc_getversion(filp, arg); case F2FS_IOC_START_ATOMIC_WRITE: return f2fs_ioc_start_atomic_write(filp); case F2FS_IOC_COMMIT_ATOMIC_WRITE: |