/* SPDX-License-Identifier: GPL-2.0 */ /* * (C) 2001 Clemson University and The University of Chicago * * See COPYING in top-level directory. */ /* * The ORANGEFS Linux kernel support allows ORANGEFS volumes to be mounted and * accessed through the Linux VFS (i.e. using standard I/O system calls). * This support is only needed on clients that wish to mount the file system. * */ /* * Declarations and macros for the ORANGEFS Linux kernel support. */ #ifndef __ORANGEFSKERNEL_H #define __ORANGEFSKERNEL_H #include <linux/kernel.h> #include <linux/moduleparam.h> #include <linux/statfs.h> #include <linux/backing-dev.h> #include <linux/device.h> #include <linux/mpage.h> #include <linux/namei.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/fs.h> #include <linux/vmalloc.h> #include <linux/aio.h> #include <linux/posix_acl.h> #include <linux/posix_acl_xattr.h> #include <linux/compat.h> #include <linux/mount.h> #include <linux/uaccess.h> #include <linux/atomic.h> #include <linux/uio.h> #include <linux/sched/signal.h> #include <linux/mm.h> #include <linux/wait.h> #include <linux/dcache.h> #include <linux/pagemap.h> #include <linux/poll.h> #include <linux/rwsem.h> #include <linux/xattr.h> #include <linux/exportfs.h> #include <linux/hashtable.h> #include <asm/unaligned.h> #include "orangefs-dev-proto.h" #define ORANGEFS_DEFAULT_OP_TIMEOUT_SECS … #define ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS … #define ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS … #define ORANGEFS_REQDEVICE_NAME … #define ORANGEFS_DEVREQ_MAGIC … #define ORANGEFS_PURGE_RETRY_COUNT … #define MAX_DEV_REQ_UPSIZE … #define MAX_DEV_REQ_DOWNSIZE … /* * valid orangefs kernel operation states * * unknown - op was just initialized * waiting - op is on request_list (upward bound) * inprogr - op is in progress (waiting for downcall) * serviced - op has matching downcall; ok * purged - op has to start a timer since client-core * exited uncleanly before servicing op * given up - submitter has given up waiting for it */ enum orangefs_vfs_op_states { … }; extern const struct xattr_handler * const orangefs_xattr_handlers[]; extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type, bool rcu); extern int orangefs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, struct posix_acl *acl, int type); int __orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); /* * orangefs data structures */ struct orangefs_kernel_op_s { … }; #define set_op_state_waiting(op) … #define set_op_state_inprogress(op) … #define set_op_state_given_up(op) … static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) { … } #define op_state_waiting(op) … #define op_state_in_progress(op) … #define op_state_serviced(op) … #define op_state_purged(op) … #define op_state_given_up(op) … #define op_is_cancel(op) … void op_release(struct orangefs_kernel_op_s *op); extern void orangefs_bufmap_put(int); static inline void put_cancel(struct orangefs_kernel_op_s *op) { … } static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) { … } /* per inode private orangefs info */ struct orangefs_inode_s { … }; /* per superblock private orangefs info */ struct orangefs_sb_info_s { … }; struct orangefs_stats { … }; struct orangefs_cached_xattr { … }; struct orangefs_write_range { … }; extern struct orangefs_stats orangefs_stats; /* * NOTE: See Documentation/filesystems/porting.rst for information * on implementing FOO_I and properly accessing fs private data */ static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) { … } static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) { … } /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) { … } static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) { … } static inline int is_root_handle(struct inode *inode) { … } static inline int match_handle(struct orangefs_khandle resp_handle, struct inode *inode) { … } /* * defined in orangefs-cache.c */ int op_cache_initialize(void); int op_cache_finalize(void); struct orangefs_kernel_op_s *op_alloc(__s32 type); void orangefs_new_tag(struct orangefs_kernel_op_s *op); char *get_opname_string(struct orangefs_kernel_op_s *new_op); int orangefs_inode_cache_initialize(void); int orangefs_inode_cache_finalize(void); /* * defined in orangefs-mod.c */ void purge_inprogress_ops(void); /* * defined in waitqueue.c */ void purge_waiting_ops(void); /* * defined in super.c */ extern uint64_t orangefs_features; struct dentry *orangefs_mount(struct file_system_type *fst, int flags, const char *devname, void *data); void orangefs_kill_sb(struct super_block *sb); int orangefs_remount(struct orangefs_sb_info_s *); int fsid_key_table_initialize(void); void fsid_key_table_finalize(void); /* * defined in inode.c */ vm_fault_t orangefs_page_mkwrite(struct vm_fault *); struct inode *orangefs_new_inode(struct super_block *sb, struct inode *dir, umode_t mode, dev_t dev, struct orangefs_object_kref *ref); int __orangefs_setattr(struct inode *, struct iattr *); int __orangefs_setattr_mode(struct dentry *dentry, struct iattr *iattr); int orangefs_setattr(struct mnt_idmap *, struct dentry *, struct iattr *); int orangefs_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags); int orangefs_permission(struct mnt_idmap *idmap, struct inode *inode, int mask); int orangefs_update_time(struct inode *, int); /* * defined in xattr.c */ ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); /* * defined in namei.c */ struct inode *orangefs_iget(struct super_block *sb, struct orangefs_object_kref *ref); /* * defined in devorangefs-req.c */ extern uint32_t orangefs_userspace_version; int orangefs_dev_init(void); void orangefs_dev_cleanup(void); int is_daemon_in_service(void); bool __is_daemon_in_service(void); /* * defined in file.c */ int orangefs_revalidate_mapping(struct inode *); ssize_t wait_for_direct_io(enum ORANGEFS_io_type, struct inode *, loff_t *, struct iov_iter *, size_t, loff_t, struct orangefs_write_range *, int *, struct file *); ssize_t do_readv_writev(enum ORANGEFS_io_type, struct file *, loff_t *, struct iov_iter *); /* * defined in orangefs-utils.c */ __s32 fsid_of_op(struct orangefs_kernel_op_s *op); ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name, void *buffer, size_t size); int orangefs_inode_setxattr(struct inode *inode, const char *name, const void *value, size_t size, int flags); #define ORANGEFS_GETATTR_NEW … #define ORANGEFS_GETATTR_SIZE … int orangefs_inode_getattr(struct inode *, int); int orangefs_inode_check_changed(struct inode *inode); int orangefs_inode_setattr(struct inode *inode); bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op); int orangefs_normalize_to_errno(__s32 error_code); extern struct mutex orangefs_request_mutex; extern int op_timeout_secs; extern int slot_timeout_secs; extern int orangefs_cache_timeout_msecs; extern int orangefs_dcache_timeout_msecs; extern int orangefs_getattr_timeout_msecs; extern struct list_head orangefs_superblocks; extern spinlock_t orangefs_superblocks_lock; extern struct list_head orangefs_request_list; extern spinlock_t orangefs_request_list_lock; extern wait_queue_head_t orangefs_request_list_waitq; extern struct list_head *orangefs_htable_ops_in_progress; extern spinlock_t orangefs_htable_ops_in_progress_lock; extern int hash_table_size; extern const struct file_operations orangefs_file_operations; extern const struct inode_operations orangefs_symlink_inode_operations; extern const struct inode_operations orangefs_dir_inode_operations; extern const struct file_operations orangefs_dir_operations; extern const struct dentry_operations orangefs_dentry_operations; /* * misc convenience macros */ #define ORANGEFS_OP_INTERRUPTIBLE … #define ORANGEFS_OP_PRIORITY … #define ORANGEFS_OP_CANCELLATION … #define ORANGEFS_OP_NO_MUTEX … #define ORANGEFS_OP_ASYNC … #define ORANGEFS_OP_WRITEBACK … int service_operation(struct orangefs_kernel_op_s *op, const char *op_name, int flags); #define get_interruptible_flag(inode) … #define fill_default_sys_attrs(sys_attr, type, mode) … static inline void orangefs_set_timeout(struct dentry *dentry) { … } #endif /* __ORANGEFSKERNEL_H */
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