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271 lines
13 KiB
C
271 lines
13 KiB
C
/*
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* Server-side file definitions
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*
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* Copyright (C) 2003 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __WINE_SERVER_FILE_H
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#define __WINE_SERVER_FILE_H
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#include <sys/types.h>
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#include "object.h"
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struct fd;
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struct mapping;
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struct async_queue;
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struct completion;
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/* server-side representation of I/O status block */
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struct iosb
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{
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struct object obj; /* object header */
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unsigned int status; /* resulting status (or STATUS_PENDING) */
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data_size_t result; /* size of result (input or output depending on the type) */
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data_size_t in_size; /* size of input data */
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void *in_data; /* input data */
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data_size_t out_size; /* size of output data */
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void *out_data; /* output data */
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};
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struct async_queue
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{
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struct list queue; /* queue of async objects */
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};
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/* operations valid on file descriptor objects */
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struct fd_ops
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{
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/* get the events we want to poll() for on this object */
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int (*get_poll_events)(struct fd *);
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/* a poll() event occurred */
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void (*poll_event)(struct fd *,int event);
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/* get file information */
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enum server_fd_type (*get_fd_type)(struct fd *fd);
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/* perform a read on the file */
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void (*read)(struct fd *, struct async *, file_pos_t );
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/* perform a write on the file */
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void (*write)(struct fd *, struct async *, file_pos_t );
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/* flush the object buffers */
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void (*flush)(struct fd *, struct async *);
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/* query file info */
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void (*get_file_info)( struct fd *, obj_handle_t, unsigned int );
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/* query volume info */
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void (*get_volume_info)( struct fd *, struct async *, unsigned int );
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/* perform an ioctl on the file */
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void (*ioctl)(struct fd *fd, ioctl_code_t code, struct async *async );
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/* cancel an async operation */
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void (*cancel_async)(struct fd *fd, struct async *async);
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/* queue an async operation */
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void (*queue_async)(struct fd *, struct async *async, int type, int count);
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/* selected events for async i/o need an update */
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void (*reselect_async)( struct fd *, struct async_queue *queue );
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};
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/* file descriptor functions */
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extern struct fd *alloc_pseudo_fd( const struct fd_ops *fd_user_ops, struct object *user,
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unsigned int options );
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extern struct fd *open_fd( struct fd *root, const char *name, struct unicode_str nt_name,
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int flags, mode_t *mode, unsigned int access,
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unsigned int sharing, unsigned int options );
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extern struct fd *create_anonymous_fd( const struct fd_ops *fd_user_ops,
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int unix_fd, struct object *user, unsigned int options );
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extern struct fd *dup_fd_object( struct fd *orig, unsigned int access, unsigned int sharing,
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unsigned int options );
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extern struct fd *get_fd_object_for_mapping( struct fd *fd, unsigned int access, unsigned int sharing );
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extern void *get_fd_user( struct fd *fd );
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extern void set_fd_user( struct fd *fd, const struct fd_ops *ops, struct object *user );
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extern unsigned int get_fd_options( struct fd *fd );
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extern unsigned int get_fd_comp_flags( struct fd *fd );
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extern int is_fd_overlapped( struct fd *fd );
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extern int get_unix_fd( struct fd *fd );
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extern int is_same_file_fd( struct fd *fd1, struct fd *fd2 );
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extern int is_fd_removable( struct fd *fd );
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extern int check_fd_events( struct fd *fd, int events );
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extern void set_fd_events( struct fd *fd, int events );
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extern obj_handle_t lock_fd( struct fd *fd, file_pos_t offset, file_pos_t count, int shared, int wait );
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extern void unlock_fd( struct fd *fd, file_pos_t offset, file_pos_t count );
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extern void allow_fd_caching( struct fd *fd );
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extern void set_fd_signaled( struct fd *fd, int signaled );
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extern char *dup_fd_name( struct fd *root, const char *name );
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extern void get_nt_name( struct fd *fd, struct unicode_str *name );
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extern int default_fd_signaled( struct object *obj, struct wait_queue_entry *entry );
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extern int default_fd_get_poll_events( struct fd *fd );
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extern void default_poll_event( struct fd *fd, int event );
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extern void fd_cancel_async( struct fd *fd, struct async *async );
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extern void fd_queue_async( struct fd *fd, struct async *async, int type );
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extern void fd_async_wake_up( struct fd *fd, int type, unsigned int status );
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extern void fd_reselect_async( struct fd *fd, struct async_queue *queue );
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extern void no_fd_read( struct fd *fd, struct async *async, file_pos_t pos );
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extern void no_fd_write( struct fd *fd, struct async *async, file_pos_t pos );
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extern void no_fd_flush( struct fd *fd, struct async *async );
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extern void no_fd_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
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extern void default_fd_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
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extern void no_fd_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
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extern void no_fd_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
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extern void default_fd_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
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extern void default_fd_cancel_async( struct fd *fd, struct async *async );
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extern void no_fd_queue_async( struct fd *fd, struct async *async, int type, int count );
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extern void default_fd_queue_async( struct fd *fd, struct async *async, int type, int count );
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extern void default_fd_reselect_async( struct fd *fd, struct async_queue *queue );
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extern void main_loop(void);
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extern void remove_process_locks( struct process *process );
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static inline struct fd *get_obj_fd( struct object *obj ) { return obj->ops->get_fd( obj ); }
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/* timeout functions */
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struct timeout_user;
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extern timeout_t current_time;
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extern timeout_t monotonic_time;
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extern struct _KUSER_SHARED_DATA *user_shared_data;
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#define TICKS_PER_SEC 10000000
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typedef void (*timeout_callback)( void *private );
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static inline abstime_t timeout_to_abstime( timeout_t timeout )
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{
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return timeout > 0 ? timeout : timeout - monotonic_time;
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}
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static inline timeout_t abstime_to_timeout( abstime_t abstime )
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{
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if (abstime > 0) return abstime;
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return -abstime < monotonic_time ? 0 : abstime + monotonic_time;
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}
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extern void set_current_time( void );
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extern struct timeout_user *add_timeout_user( timeout_t when, timeout_callback func, void *private );
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extern void remove_timeout_user( struct timeout_user *user );
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extern const char *get_timeout_str( timeout_t timeout );
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/* file functions */
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extern struct file *get_file_obj( struct process *process, obj_handle_t handle,
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unsigned int access );
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extern int get_file_unix_fd( struct file *file );
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extern struct file *create_file_for_fd( int fd, unsigned int access, unsigned int sharing );
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extern struct file *create_file_for_fd_obj( struct fd *fd, unsigned int access, unsigned int sharing );
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extern void file_set_error(void);
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extern struct security_descriptor *mode_to_sd( mode_t mode, const struct sid *user, const struct sid *group );
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extern mode_t sd_to_mode( const struct security_descriptor *sd, const struct sid *owner );
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extern int is_file_executable( const char *name );
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/* file mapping functions */
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struct memory_view;
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extern int grow_file( int unix_fd, file_pos_t new_size );
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extern struct memory_view *find_mapped_view( struct process *process, client_ptr_t base );
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extern struct memory_view *get_exe_view( struct process *process );
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extern struct file *get_view_file( const struct memory_view *view, unsigned int access, unsigned int sharing );
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extern const pe_image_info_t *get_view_image_info( const struct memory_view *view, client_ptr_t *base );
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extern int get_view_nt_name( const struct memory_view *view, struct unicode_str *name );
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extern void free_mapped_views( struct process *process );
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extern int get_page_size(void);
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extern struct mapping *create_fd_mapping( struct object *root, const struct unicode_str *name, struct fd *fd,
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unsigned int attr, const struct security_descriptor *sd );
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extern struct object *create_user_data_mapping( struct object *root, const struct unicode_str *name,
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unsigned int attr, const struct security_descriptor *sd );
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/* device functions */
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extern struct object *create_named_pipe_device( struct object *root, const struct unicode_str *name,
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unsigned int attr, const struct security_descriptor *sd );
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extern struct object *create_mailslot_device( struct object *root, const struct unicode_str *name,
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unsigned int attr, const struct security_descriptor *sd );
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extern struct object *create_console_device( struct object *root, const struct unicode_str *name,
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unsigned int attr, const struct security_descriptor *sd );
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extern struct object *create_socket_device( struct object *root, const struct unicode_str *name,
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unsigned int attr, const struct security_descriptor *sd );
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extern struct object *create_unix_device( struct object *root, const struct unicode_str *name,
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unsigned int attr, const struct security_descriptor *sd, const char *unix_path );
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/* change notification functions */
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extern void do_change_notify( int unix_fd );
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extern void sigio_callback(void);
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extern struct object *create_dir_obj( struct fd *fd, unsigned int access, mode_t mode );
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extern struct dir *get_dir_obj( struct process *process, obj_handle_t handle, unsigned int access );
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/* completion */
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extern struct completion *get_completion_obj( struct process *process, obj_handle_t handle, unsigned int access );
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extern void add_completion( struct completion *completion, apc_param_t ckey, apc_param_t cvalue,
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unsigned int status, apc_param_t information );
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/* serial port functions */
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extern int is_serial_fd( struct fd *fd );
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extern struct object *create_serial( struct fd *fd );
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/* async I/O functions */
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typedef void (*async_completion_callback)( void *private );
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extern void free_async_queue( struct async_queue *queue );
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extern struct async *create_async( struct fd *fd, struct thread *thread, const async_data_t *data, struct iosb *iosb );
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extern struct async *create_request_async( struct fd *fd, unsigned int comp_flags, const async_data_t *data );
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extern obj_handle_t async_handoff( struct async *async, data_size_t *result, int force_blocking );
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extern void queue_async( struct async_queue *queue, struct async *async );
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extern void async_set_timeout( struct async *async, timeout_t timeout, unsigned int status );
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extern void async_set_result( struct object *obj, unsigned int status, apc_param_t total );
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extern void async_set_completion_callback( struct async *async, async_completion_callback func, void *private );
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extern void async_set_unknown_status( struct async *async );
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extern void set_async_pending( struct async *async );
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extern void async_set_initial_status( struct async *async, unsigned int status );
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extern void async_wake_obj( struct async *async );
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extern int async_waiting( struct async_queue *queue );
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extern void async_terminate( struct async *async, unsigned int status );
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extern void async_request_complete( struct async *async, unsigned int status, data_size_t result,
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data_size_t out_size, void *out_data );
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extern void async_request_complete_alloc( struct async *async, unsigned int status, data_size_t result,
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data_size_t out_size, const void *out_data );
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extern void async_wake_up( struct async_queue *queue, unsigned int status );
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extern struct completion *fd_get_completion( struct fd *fd, apc_param_t *p_key );
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extern void fd_copy_completion( struct fd *src, struct fd *dst );
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extern struct iosb *async_get_iosb( struct async *async );
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extern struct thread *async_get_thread( struct async *async );
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extern struct async *find_pending_async( struct async_queue *queue );
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extern void cancel_process_asyncs( struct process *process );
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static inline void init_async_queue( struct async_queue *queue )
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{
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list_init( &queue->queue );
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}
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static inline int async_queued( struct async_queue *queue )
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{
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return !list_empty( &queue->queue );
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}
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/* access rights that require Unix read permission */
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#define FILE_UNIX_READ_ACCESS (FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA)
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/* access rights that require Unix write permission */
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#define FILE_UNIX_WRITE_ACCESS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA)
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/* magic file access rights for mappings */
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#define FILE_MAPPING_IMAGE 0x80000000 /* set for SEC_IMAGE mappings */
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#define FILE_MAPPING_WRITE 0x40000000 /* set for writable shared mappings */
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#define FILE_MAPPING_ACCESS 0x20000000 /* set for all mappings */
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#endif /* __WINE_SERVER_FILE_H */
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