2 * Server-side file management
4 * Copyright (C) 1998 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "wine/port.h"
31 #ifdef HAVE_SYS_ERRNO_H
32 #include <sys/errno.h>
36 #include <sys/types.h>
47 #define WIN32_NO_STATUS
58 struct object obj; /* object header */
59 struct fd *fd; /* file descriptor for this file */
60 unsigned int access; /* file access (FILE_READ_DATA etc.) */
61 unsigned int options; /* file options (FILE_DELETE_ON_CLOSE, FILE_SYNCHRONOUS...) */
64 static void file_dump( struct object *obj, int verbose );
65 static struct fd *file_get_fd( struct object *obj );
66 static unsigned int file_map_access( struct object *obj, unsigned int access );
67 static void file_destroy( struct object *obj );
69 static int file_get_poll_events( struct fd *fd );
70 static int file_flush( struct fd *fd, struct event **event );
71 static int file_get_info( struct fd *fd );
73 static const struct object_ops file_ops =
75 sizeof(struct file), /* size */
77 default_fd_add_queue, /* add_queue */
78 default_fd_remove_queue, /* remove_queue */
79 default_fd_signaled, /* signaled */
80 no_satisfied, /* satisfied */
81 no_signal, /* signal */
82 file_get_fd, /* get_fd */
83 file_map_access, /* map_access */
84 no_lookup_name, /* lookup_name */
85 no_close_handle, /* close_handle */
86 file_destroy /* destroy */
89 static const struct fd_ops file_fd_ops =
91 file_get_poll_events, /* get_poll_events */
92 default_poll_event, /* poll_event */
93 file_flush, /* flush */
94 file_get_info, /* get_file_info */
95 default_fd_queue_async, /* queue_async */
96 default_fd_cancel_async /* cancel_async */
99 static inline int is_overlapped( const struct file *file )
101 return !(file->options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT));
104 /* create a file from a file descriptor */
105 /* if the function fails the fd is closed */
106 static struct file *create_file_for_fd( int fd, unsigned int access, unsigned int sharing )
110 if ((file = alloc_object( &file_ops )))
112 file->access = file_map_access( &file->obj, access );
113 file->options = FILE_SYNCHRONOUS_IO_NONALERT;
114 if (!(file->fd = create_anonymous_fd( &file_fd_ops, fd, &file->obj )))
116 release_object( file );
124 static struct object *create_file( const char *nameptr, size_t len, unsigned int access,
125 unsigned int sharing, int create, unsigned int options,
133 if (!(name = mem_alloc( len + 1 ))) return NULL;
134 memcpy( name, nameptr, len );
139 case FILE_CREATE: flags = O_CREAT | O_EXCL; break;
140 case FILE_OVERWRITE_IF: /* FIXME: the difference is whether we trash existing attr or not */
141 case FILE_SUPERSEDE: flags = O_CREAT | O_TRUNC; break;
142 case FILE_OPEN: flags = 0; break;
143 case FILE_OPEN_IF: flags = O_CREAT; break;
144 case FILE_OVERWRITE: flags = O_TRUNC; break;
145 default: set_error( STATUS_INVALID_PARAMETER ); goto error;
148 mode = (attrs & FILE_ATTRIBUTE_READONLY) ? 0444 : 0666;
151 (!strcasecmp( name + len - 4, ".exe" ) || !strcasecmp( name + len - 4, ".com" )))
154 if (!(file = alloc_object( &file_ops ))) goto error;
156 file->access = file_map_access( &file->obj, access );
157 file->options = options;
160 if (file->access & FILE_UNIX_READ_ACCESS) rw_mode |= FILE_READ_DATA;
161 if (file->access & FILE_UNIX_WRITE_ACCESS) rw_mode |= FILE_WRITE_DATA;
165 case FILE_READ_DATA: flags |= O_RDONLY; break;
166 case FILE_WRITE_DATA: flags |= O_WRONLY; break;
167 case FILE_READ_DATA|FILE_WRITE_DATA: flags |= O_RDWR; break;
170 /* FIXME: should set error to STATUS_OBJECT_NAME_COLLISION if file existed before */
171 if (!(file->fd = alloc_fd( &file_fd_ops, &file->obj )) ||
172 !(file->fd = open_fd( file->fd, name, flags | O_NONBLOCK | O_LARGEFILE,
173 &mode, file->access, sharing, options )))
176 release_object( file );
181 /* check for serial port */
182 if (S_ISCHR(mode) && is_serial_fd( file->fd ))
184 struct object *obj = create_serial( file->fd, file->options );
185 release_object( file );
196 /* check if two file objects point to the same file */
197 int is_same_file( struct file *file1, struct file *file2 )
199 return is_same_file_fd( file1->fd, file2->fd );
202 /* create a temp file for anonymous mappings */
203 struct file *create_temp_file( int access )
208 sprintf( tmpfn, "anonmap.XXXXXX" ); /* create it in the server directory */
209 fd = mkstemps( tmpfn, 0 );
216 return create_file_for_fd( fd, access, 0 );
219 static void file_dump( struct object *obj, int verbose )
221 struct file *file = (struct file *)obj;
222 assert( obj->ops == &file_ops );
223 fprintf( stderr, "File fd=%p options=%08x\n", file->fd, file->options );
226 static int file_get_poll_events( struct fd *fd )
228 struct file *file = get_fd_user( fd );
230 assert( file->obj.ops == &file_ops );
231 if (file->access & FILE_UNIX_READ_ACCESS) events |= POLLIN;
232 if (file->access & FILE_UNIX_WRITE_ACCESS) events |= POLLOUT;
236 static int file_flush( struct fd *fd, struct event **event )
238 int ret = 0, unix_fd = get_unix_fd( fd );
242 ret = (fsync( unix_fd ) != -1);
243 if (!ret) file_set_error();
248 static int file_get_info( struct fd *fd )
250 struct file *file = get_fd_user( fd );
252 if (is_overlapped( file )) return FD_FLAG_OVERLAPPED;
256 static struct fd *file_get_fd( struct object *obj )
258 struct file *file = (struct file *)obj;
259 assert( obj->ops == &file_ops );
260 return (struct fd *)grab_object( file->fd );
263 static unsigned int file_map_access( struct object *obj, unsigned int access )
265 if (access & GENERIC_READ) access |= FILE_GENERIC_READ;
266 if (access & GENERIC_WRITE) access |= FILE_GENERIC_WRITE;
267 if (access & GENERIC_EXECUTE) access |= FILE_GENERIC_EXECUTE;
268 if (access & GENERIC_ALL) access |= FILE_ALL_ACCESS;
269 return access & ~(GENERIC_READ | GENERIC_WRITE | GENERIC_EXECUTE | GENERIC_ALL);
272 static void file_destroy( struct object *obj )
274 struct file *file = (struct file *)obj;
275 assert( obj->ops == &file_ops );
277 if (file->fd) release_object( file->fd );
280 /* set the last error depending on errno */
281 void file_set_error(void)
285 case EAGAIN: set_error( STATUS_SHARING_VIOLATION ); break;
286 case EBADF: set_error( STATUS_INVALID_HANDLE ); break;
287 case ENOSPC: set_error( STATUS_DISK_FULL ); break;
290 case EPERM: set_error( STATUS_ACCESS_DENIED ); break;
291 case EROFS: set_error( STATUS_MEDIA_WRITE_PROTECTED ); break;
292 case EBUSY: set_error( STATUS_FILE_LOCK_CONFLICT ); break;
293 case ENOENT: set_error( STATUS_NO_SUCH_FILE ); break;
294 case EISDIR: set_error( STATUS_FILE_IS_A_DIRECTORY ); break;
296 case EMFILE: set_error( STATUS_NO_MORE_FILES ); break;
297 case EEXIST: set_error( STATUS_OBJECT_NAME_COLLISION ); break;
298 case EINVAL: set_error( STATUS_INVALID_PARAMETER ); break;
299 case ESPIPE: set_win32_error( ERROR_SEEK ); break;
300 case ENOTEMPTY: set_error( STATUS_DIRECTORY_NOT_EMPTY ); break;
301 case EIO: set_error( STATUS_ACCESS_VIOLATION ); break;
302 case ENOTDIR: set_error( STATUS_NOT_A_DIRECTORY ); break;
303 case EFBIG: set_error( STATUS_SECTION_TOO_BIG ); break;
304 case ENODEV: set_error( STATUS_NO_SUCH_DEVICE ); break;
305 case ENXIO: set_error( STATUS_NO_SUCH_DEVICE ); break;
307 case EOVERFLOW: set_error( STATUS_INVALID_PARAMETER ); break;
309 default: perror("file_set_error"); set_error( STATUS_UNSUCCESSFUL ); break;
313 struct file *get_file_obj( struct process *process, obj_handle_t handle, unsigned int access )
315 return (struct file *)get_handle_obj( process, handle, access, &file_ops );
318 int get_file_unix_fd( struct file *file )
320 return get_unix_fd( file->fd );
323 /* extend a file beyond the current end of file */
324 static int extend_file( struct file *file, file_pos_t new_size )
326 static const char zero;
327 int unix_fd = get_file_unix_fd( file );
328 off_t size = new_size;
330 if (unix_fd == -1) return 0;
332 if (sizeof(new_size) > sizeof(size) && size != new_size)
334 set_error( STATUS_INVALID_PARAMETER );
337 /* extend the file one byte beyond the requested size and then truncate it */
338 /* this should work around ftruncate implementations that can't extend files */
339 if (pwrite( unix_fd, &zero, 1, size ) != -1)
341 ftruncate( unix_fd, size );
348 /* try to grow the file to the specified size */
349 int grow_file( struct file *file, file_pos_t size )
352 int unix_fd = get_file_unix_fd( file );
354 if (unix_fd == -1) return 0;
356 if (fstat( unix_fd, &st ) == -1)
361 if (st.st_size >= size) return 1; /* already large enough */
362 return extend_file( file, size );
366 DECL_HANDLER(create_file)
371 if ((file = create_file( get_req_data(), get_req_data_size(), req->access,
372 req->sharing, req->create, req->options, req->attrs )))
374 reply->handle = alloc_handle( current->process, file, req->access, req->attributes );
375 release_object( file );
379 /* allocate a file handle for a Unix fd */
380 DECL_HANDLER(alloc_file_handle)
386 if ((fd = thread_get_inflight_fd( current, req->fd )) == -1)
388 set_error( STATUS_INVALID_HANDLE );
391 if ((file = create_file_for_fd( fd, req->access, FILE_SHARE_READ | FILE_SHARE_WRITE )))
393 reply->handle = alloc_handle( current->process, file, req->access, req->attributes );
394 release_object( file );
398 /* lock a region of a file */
399 DECL_HANDLER(lock_file)
402 file_pos_t offset = ((file_pos_t)req->offset_high << 32) | req->offset_low;
403 file_pos_t count = ((file_pos_t)req->count_high << 32) | req->count_low;
405 if ((file = get_file_obj( current->process, req->handle, 0 )))
407 reply->handle = lock_fd( file->fd, offset, count, req->shared, req->wait );
408 reply->overlapped = is_overlapped( file );
409 release_object( file );
413 /* unlock a region of a file */
414 DECL_HANDLER(unlock_file)
417 file_pos_t offset = ((file_pos_t)req->offset_high << 32) | req->offset_low;
418 file_pos_t count = ((file_pos_t)req->count_high << 32) | req->count_low;
420 if ((file = get_file_obj( current->process, req->handle, 0 )))
422 unlock_fd( file->fd, offset, count );
423 release_object( file );