diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/fuse.h | 15 | ||||
| -rw-r--r-- | include/fuse_kernel.h | 14 | ||||
| -rw-r--r-- | include/fuse_lowlevel.h | 20 |
3 files changed, 48 insertions, 1 deletions
diff --git a/include/fuse.h b/include/fuse.h index 36b168c..c657e67 100644 --- a/include/fuse.h +++ b/include/fuse.h @@ -575,6 +575,19 @@ struct fuse_operations { * Introduced in version 2.9 */ int (*flock) (const char *, struct fuse_file_info *, int op); + + /** + * Allocates space for an open file + * + * This function ensures that required space is allocated for specified + * file. If this function returns success then any subsequent write + * request to specified range is guaranteed not to fail because of lack + * of space on the file system media. + * + * Introduced in version 2.9.1 + */ + int (*fallocate) (const char *, int, off_t, off_t, + struct fuse_file_info *); }; /** Extra context that may be needed by some filesystems @@ -870,6 +883,8 @@ int fuse_fs_ioctl(struct fuse_fs *fs, const char *path, int cmd, void *arg, int fuse_fs_poll(struct fuse_fs *fs, const char *path, struct fuse_file_info *fi, struct fuse_pollhandle *ph, unsigned *reventsp); +int fuse_fs_fallocate(struct fuse_fs *fs, const char *path, int mode, + off_t offset, off_t length, struct fuse_file_info *fi); void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn); void fuse_fs_destroy(struct fuse_fs *fs); diff --git a/include/fuse_kernel.h b/include/fuse_kernel.h index 1ce072c..c632b58 100644 --- a/include/fuse_kernel.h +++ b/include/fuse_kernel.h @@ -80,6 +80,9 @@ * 7.18 * - add FUSE_IOCTL_DIR flag * - add FUSE_NOTIFY_DELETE + * + * 7.19 + * - add FUSE_FALLOCATE */ #ifndef _LINUX_FUSE_H @@ -116,7 +119,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 18 +#define FUSE_KERNEL_MINOR_VERSION 19 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -309,6 +312,7 @@ enum fuse_opcode { FUSE_POLL = 40, FUSE_NOTIFY_REPLY = 41, FUSE_BATCH_FORGET = 42, + FUSE_FALLOCATE = 43, /* CUSE specific operations */ CUSE_INIT = 4096, @@ -602,6 +606,14 @@ struct fuse_notify_poll_wakeup_out { __u64 kh; }; +struct fuse_fallocate_in { + __u64 fh; + __u64 offset; + __u64 length; + __u32 mode; + __u32 padding; +}; + struct fuse_in_header { __u32 len; __u32 opcode; diff --git a/include/fuse_lowlevel.h b/include/fuse_lowlevel.h index 3ecc46e..2036717 100644 --- a/include/fuse_lowlevel.h +++ b/include/fuse_lowlevel.h @@ -996,6 +996,26 @@ struct fuse_lowlevel_ops { */ void (*flock) (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi, int op); + + /** + * Allocate requested space. If this function returns success then + * subsequent writes to the specified range shall not fail due to the lack + * of free space on the file system storage media. + * + * Introduced in version 2.9 + * + * Valid replies: + * fuse_reply_err + * + * @param req request handle + * @param ino the inode number + * @param offset starting point for allocated region + * @param length size of allocated region + * @param mode determines the operation to be performed on the given range, + * see fallocate(2) + */ + void (*fallocate) (fuse_req_t req, fuse_ino_t ino, int mode, + off_t offset, off_t length, struct fuse_file_info *fi); }; /** |