diff options
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 100 |
1 files changed, 83 insertions, 17 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 74744c6f2860..ec248d13c8bf 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -38,14 +38,34 @@ /** Bias for fi->writectr, meaning new writepages must not be sent */ #define FUSE_NOWRITE INT_MIN -/** It could be as large as PATH_MAX, but would that have any uses? */ -#define FUSE_NAME_MAX 1024 +/** Maximum length of a filename, not including terminating null */ + +/* maximum, small enough for FUSE_MIN_READ_BUFFER*/ +#define FUSE_NAME_LOW_MAX 1024 +/* maximum, but needs a request buffer > FUSE_MIN_READ_BUFFER */ +#define FUSE_NAME_MAX (PATH_MAX - 1) /** Number of dentries for each connection in the control filesystem */ #define FUSE_CTL_NUM_DENTRIES 5 +/* Frequency (in seconds) of request timeout checks, if opted into */ +#define FUSE_TIMEOUT_TIMER_FREQ 15 + +/** Frequency (in jiffies) of request timeout checks, if opted into */ +extern const unsigned long fuse_timeout_timer_freq; + /** Maximum of max_pages received in init_out */ extern unsigned int fuse_max_pages_limit; +/* + * Default timeout (in seconds) for the server to reply to a request + * before the connection is aborted, if no timeout was specified on mount. + */ +extern unsigned int fuse_default_req_timeout; +/* + * Max timeout (in seconds) for the server to reply to a request before + * the connection is aborted. + */ +extern unsigned int fuse_max_req_timeout; /** List of active connections */ extern struct list_head fuse_conn_list; @@ -54,8 +74,8 @@ extern struct list_head fuse_conn_list; extern struct mutex fuse_mutex; /** Module parameters */ -extern unsigned max_user_bgreq; -extern unsigned max_user_congthresh; +extern unsigned int max_user_bgreq; +extern unsigned int max_user_congthresh; /* One forget request */ struct fuse_forget_link { @@ -141,9 +161,6 @@ struct fuse_inode { /* waitq for direct-io completion */ wait_queue_head_t direct_io_waitq; - - /* List of writepage requestst (pending or sent) */ - struct rb_root writepages; }; /* readdir cache (directory only) */ @@ -310,7 +327,7 @@ struct fuse_args { bool is_ext:1; bool is_pinned:1; bool invalidate_vmap:1; - struct fuse_in_arg in_args[3]; + struct fuse_in_arg in_args[4]; struct fuse_arg out_args[2]; void (*end)(struct fuse_mount *fm, struct fuse_args *args, int error); /* Used for kvec iter backed by vmalloc address */ @@ -378,6 +395,7 @@ struct fuse_io_priv { * FR_FINISHED: request is finished * FR_PRIVATE: request is on private list * FR_ASYNC: request is asynchronous + * FR_URING: request is handled through fuse-io-uring */ enum fuse_req_flag { FR_ISREPLY, @@ -392,6 +410,7 @@ enum fuse_req_flag { FR_FINISHED, FR_PRIVATE, FR_ASYNC, + FR_URING, }; /** @@ -438,6 +457,13 @@ struct fuse_req { /** fuse_mount this request belongs to */ struct fuse_mount *fm; + +#ifdef CONFIG_FUSE_IO_URING + void *ring_entry; + void *ring_queue; +#endif + /** When (in jiffies) the request was created */ + unsigned long create_time; }; struct fuse_iqueue; @@ -607,6 +633,9 @@ struct fuse_conn { /** Number of fuse_dev's */ atomic_t dev_count; + /** Current epoch for up-to-date dentries */ + atomic_t epoch; + struct rcu_head rcu; /** The user id for this mount */ @@ -863,6 +892,12 @@ struct fuse_conn { /* Use pages instead of pointer for kernel I/O */ unsigned int use_pages_for_kvec_io:1; + /* Is link not implemented by fs? */ + unsigned int no_link:1; + + /* Use io_uring for communication */ + unsigned int io_uring; + /** Maximum stack depth for passthrough backing files */ int max_stack_depth; @@ -878,12 +913,6 @@ struct fuse_conn { /** Device ID from the root super block */ dev_t dev; - /** Dentries in the control filesystem */ - struct dentry *ctl_dentry[FUSE_CTL_NUM_DENTRIES]; - - /** number of dentries used in the above array */ - int ctl_ndents; - /** Key for lock owner ID scrambling */ u32 scramble_key[4]; @@ -893,6 +922,9 @@ struct fuse_conn { /** Version counter for evict inode */ atomic64_t evict_ctr; + /* maximum file name length */ + u32 name_max; + /** Called on final put */ void (*release)(struct fuse_conn *); @@ -923,6 +955,20 @@ struct fuse_conn { /** IDR for backing files ids */ struct idr backing_files_map; #endif + +#ifdef CONFIG_FUSE_IO_URING + /** uring connection information*/ + struct fuse_ring *ring; +#endif + + /** Only used if the connection opts into request timeouts */ + struct { + /* Worker for checking if any requests have timed out */ + struct delayed_work work; + + /* Request timeout (in jiffies). 0 = no timeout */ + unsigned int req_timeout; + } timeout; }; /* @@ -947,6 +993,19 @@ struct fuse_mount { struct rcu_head rcu; }; +/* + * Empty header for FUSE opcodes without specific header needs. + * Used as a placeholder in args->in_args[0] for consistency + * across all FUSE operations, simplifying request handling. + */ +struct fuse_zero_header {}; + +static inline void fuse_set_zero_arg0(struct fuse_args *args) +{ + args->in_args[0].size = sizeof(struct fuse_zero_header); + args->in_args[0].value = NULL; +} + static inline struct fuse_mount *get_fuse_mount_super(struct super_block *sb) { return sb->s_fs_info; @@ -1044,7 +1103,6 @@ static inline void fuse_sync_bucket_dec(struct fuse_sync_bucket *bucket) extern const struct file_operations fuse_dev_operations; extern const struct dentry_operations fuse_dentry_operations; -extern const struct dentry_operations fuse_root_dentry_operations; /** * Get a filled in inode @@ -1191,6 +1249,9 @@ void fuse_request_end(struct fuse_req *req); void fuse_abort_conn(struct fuse_conn *fc); void fuse_wait_aborted(struct fuse_conn *fc); +/* Check if any requests timed out */ +void fuse_check_timeout(struct work_struct *work); + /** * Invalidate inode attributes */ @@ -1220,6 +1281,11 @@ void fuse_change_entry_timeout(struct dentry *entry, struct fuse_entry_out *o); struct fuse_conn *fuse_conn_get(struct fuse_conn *fc); /** + * Initialize the fuse processing queue + */ +void fuse_pqueue_init(struct fuse_pqueue *fpq); + +/** * Initialize fuse_conn */ void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm, @@ -1413,9 +1479,9 @@ void fuse_dax_cancel_work(struct fuse_conn *fc); long fuse_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg); long fuse_file_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); -int fuse_fileattr_get(struct dentry *dentry, struct fileattr *fa); +int fuse_fileattr_get(struct dentry *dentry, struct file_kattr *fa); int fuse_fileattr_set(struct mnt_idmap *idmap, - struct dentry *dentry, struct fileattr *fa); + struct dentry *dentry, struct file_kattr *fa); /* iomode.c */ int fuse_file_cached_io_open(struct inode *inode, struct fuse_file *ff); |