diff options
Diffstat (limited to 'fs/overlayfs/overlayfs.h')
| -rw-r--r-- | fs/overlayfs/overlayfs.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index e5dabf7ef339..2cbebe06d9ad 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -518,9 +518,20 @@ static inline void ovl_copyattr(struct inode *from, struct inode *to) i_size_write(to, i_size_read(from)); } +/* vfs inode flags copied from real to ovl inode */ +#define OVL_COPY_I_FLAGS_MASK (S_SYNC | S_NOATIME | S_APPEND | S_IMMUTABLE) + +/* + * fileattr flags copied from lower to upper inode on copy up. + * We cannot copy immutable/append-only flags, because that would prevevnt + * linking temp inode to upper dir. + */ +#define OVL_COPY_FS_FLAGS_MASK (FS_SYNC_FL | FS_NOATIME_FL) +#define OVL_COPY_FSX_FLAGS_MASK (FS_XFLAG_SYNC | FS_XFLAG_NOATIME) + static inline void ovl_copyflags(struct inode *from, struct inode *to) { - unsigned int mask = S_SYNC | S_IMMUTABLE | S_APPEND | S_NOATIME; + unsigned int mask = OVL_COPY_I_FLAGS_MASK; inode_set_flags(to, from->i_flags & mask, mask); } @@ -548,6 +559,8 @@ struct dentry *ovl_create_temp(struct dentry *workdir, struct ovl_cattr *attr); extern const struct file_operations ovl_file_operations; int __init ovl_aio_request_cache_init(void); void ovl_aio_request_cache_destroy(void); +int ovl_real_fileattr_get(struct path *realpath, struct fileattr *fa); +int ovl_real_fileattr_set(struct path *realpath, struct fileattr *fa); int ovl_fileattr_get(struct dentry *dentry, struct fileattr *fa); int ovl_fileattr_set(struct user_namespace *mnt_userns, struct dentry *dentry, struct fileattr *fa); |