Commit | Line | Data |
---|---|---|
338e757d AJ |
1 | /* |
2 | * Server-side file management | |
3 | * | |
4 | * Copyright (C) 1998 Alexandre Julliard | |
5 | */ | |
6 | ||
96336324 PS |
7 | #include "config.h" |
8 | ||
338e757d AJ |
9 | #include <assert.h> |
10 | #include <fcntl.h> | |
11 | #include <stdio.h> | |
ee517e86 | 12 | #include <string.h> |
338e757d | 13 | #include <stdlib.h> |
8ba68fbd | 14 | #include <errno.h> |
13277480 | 15 | #ifdef HAVE_SYS_ERRNO_H |
338e757d | 16 | #include <sys/errno.h> |
13277480 | 17 | #endif |
338e757d AJ |
18 | #include <sys/stat.h> |
19 | #include <sys/time.h> | |
20 | #include <sys/types.h> | |
21 | #include <time.h> | |
22 | #include <unistd.h> | |
0562539d | 23 | #include <utime.h> |
338e757d AJ |
24 | |
25 | #include "winerror.h" | |
f935c597 | 26 | #include "winbase.h" |
43c190e7 AJ |
27 | |
28 | #include "handle.h" | |
29 | #include "thread.h" | |
5bc78089 | 30 | #include "request.h" |
338e757d AJ |
31 | |
32 | struct file | |
33 | { | |
57e11313 | 34 | struct object obj; /* object header */ |
57e11313 AJ |
35 | struct file *next; /* next file in hashing list */ |
36 | char *name; /* file name */ | |
37 | unsigned int access; /* file access (GENERIC_READ/WRITE) */ | |
38 | unsigned int flags; /* flags (FILE_FLAG_*) */ | |
39 | unsigned int sharing; /* file sharing mode */ | |
338e757d AJ |
40 | }; |
41 | ||
0562539d AJ |
42 | #define NAME_HASH_SIZE 37 |
43 | ||
44 | static struct file *file_hash[NAME_HASH_SIZE]; | |
45 | ||
338e757d | 46 | static void file_dump( struct object *obj, int verbose ); |
1dca5e24 | 47 | static int file_get_poll_events( struct object *obj ); |
aa0ebd0f AJ |
48 | static int file_get_read_fd( struct object *obj ); |
49 | static int file_get_write_fd( struct object *obj ); | |
50 | static int file_flush( struct object *obj ); | |
ebe29ef3 | 51 | static int file_get_info( struct object *obj, struct get_file_info_request *req ); |
338e757d AJ |
52 | static void file_destroy( struct object *obj ); |
53 | ||
54 | static const struct object_ops file_ops = | |
55 | { | |
1dca5e24 AJ |
56 | sizeof(struct file), /* size */ |
57 | file_dump, /* dump */ | |
58 | default_poll_add_queue, /* add_queue */ | |
59 | default_poll_remove_queue, /* remove_queue */ | |
60 | default_poll_signaled, /* signaled */ | |
61 | no_satisfied, /* satisfied */ | |
62 | file_get_poll_events, /* get_poll_events */ | |
63 | default_poll_event, /* poll_event */ | |
64 | file_get_read_fd, /* get_read_fd */ | |
65 | file_get_write_fd, /* get_write_fd */ | |
66 | file_flush, /* flush */ | |
67 | file_get_info, /* get_file_info */ | |
68 | file_destroy /* destroy */ | |
338e757d AJ |
69 | }; |
70 | ||
0562539d AJ |
71 | |
72 | static int get_name_hash( const char *name ) | |
73 | { | |
74 | int hash = 0; | |
bf2b7658 | 75 | while (*name) hash ^= (unsigned char)*name++; |
0562539d AJ |
76 | return hash % NAME_HASH_SIZE; |
77 | } | |
78 | ||
79 | /* check if the desired access is possible without violating */ | |
80 | /* the sharing mode of other opens of the same file */ | |
81 | static int check_sharing( const char *name, int hash, unsigned int access, | |
82 | unsigned int sharing ) | |
83 | { | |
84 | struct file *file; | |
85 | unsigned int existing_sharing = FILE_SHARE_READ | FILE_SHARE_WRITE; | |
86 | unsigned int existing_access = 0; | |
87 | ||
88 | for (file = file_hash[hash]; file; file = file->next) | |
89 | { | |
90 | if (strcmp( file->name, name )) continue; | |
91 | existing_sharing &= file->sharing; | |
92 | existing_access |= file->access; | |
93 | } | |
5bc78089 AJ |
94 | if ((access & GENERIC_READ) && !(existing_sharing & FILE_SHARE_READ)) goto error; |
95 | if ((access & GENERIC_WRITE) && !(existing_sharing & FILE_SHARE_WRITE)) goto error; | |
96 | if ((existing_access & GENERIC_READ) && !(sharing & FILE_SHARE_READ)) goto error; | |
97 | if ((existing_access & GENERIC_WRITE) && !(sharing & FILE_SHARE_WRITE)) goto error; | |
0562539d | 98 | return 1; |
5bc78089 | 99 | error: |
cb1fc735 | 100 | set_error( STATUS_SHARING_VIOLATION ); |
5bc78089 | 101 | return 0; |
0562539d AJ |
102 | } |
103 | ||
1dca5e24 AJ |
104 | /* create a file from a file descriptor */ |
105 | /* if the function fails the fd is closed */ | |
5bc78089 AJ |
106 | static struct file *create_file_for_fd( int fd, unsigned int access, unsigned int sharing, |
107 | unsigned int attrs ) | |
338e757d AJ |
108 | { |
109 | struct file *file; | |
1dca5e24 | 110 | if ((file = alloc_object( &file_ops, fd ))) |
0562539d | 111 | { |
247b8aee AJ |
112 | file->name = NULL; |
113 | file->next = NULL; | |
247b8aee AJ |
114 | file->access = access; |
115 | file->flags = attrs; | |
116 | file->sharing = sharing; | |
5bc78089 AJ |
117 | } |
118 | return file; | |
119 | } | |
0562539d | 120 | |
0562539d | 121 | |
5bc78089 AJ |
122 | static struct file *create_file( const char *nameptr, size_t len, unsigned int access, |
123 | unsigned int sharing, int create, unsigned int attrs ) | |
124 | { | |
125 | struct file *file; | |
126 | int hash, flags; | |
127 | struct stat st; | |
128 | char *name; | |
129 | int fd = -1; | |
0562539d | 130 | |
5bc78089 AJ |
131 | if (!(name = mem_alloc( len + 1 ))) return NULL; |
132 | memcpy( name, nameptr, len ); | |
133 | name[len] = 0; | |
0562539d | 134 | |
5bc78089 AJ |
135 | /* check sharing mode */ |
136 | hash = get_name_hash( name ); | |
137 | if (!check_sharing( name, hash, access, sharing )) goto error; | |
338e757d | 138 | |
5bc78089 | 139 | switch(create) |
338e757d | 140 | { |
5bc78089 AJ |
141 | case CREATE_NEW: flags = O_CREAT | O_EXCL; break; |
142 | case CREATE_ALWAYS: flags = O_CREAT | O_TRUNC; break; | |
143 | case OPEN_ALWAYS: flags = O_CREAT; break; | |
144 | case TRUNCATE_EXISTING: flags = O_TRUNC; break; | |
145 | case OPEN_EXISTING: flags = 0; break; | |
cb1fc735 | 146 | default: set_error( STATUS_INVALID_PARAMETER ); goto error; |
338e757d | 147 | } |
5bc78089 | 148 | switch(access & (GENERIC_READ | GENERIC_WRITE)) |
338e757d | 149 | { |
5bc78089 AJ |
150 | case 0: break; |
151 | case GENERIC_READ: flags |= O_RDONLY; break; | |
152 | case GENERIC_WRITE: flags |= O_WRONLY; break; | |
153 | case GENERIC_READ|GENERIC_WRITE: flags |= O_RDWR; break; | |
0562539d | 154 | } |
5bc78089 | 155 | |
cb1fc735 | 156 | /* FIXME: should set error to STATUS_OBJECT_NAME_COLLISION if file existed before */ |
5bc78089 AJ |
157 | if ((fd = open( name, flags | O_NONBLOCK, |
158 | (attrs & FILE_ATTRIBUTE_READONLY) ? 0444 : 0666 )) == -1) | |
159 | goto file_error; | |
160 | /* refuse to open a directory */ | |
161 | if (fstat( fd, &st ) == -1) goto file_error; | |
162 | if (S_ISDIR(st.st_mode)) | |
0562539d | 163 | { |
cb1fc735 | 164 | set_error( STATUS_ACCESS_DENIED ); |
5bc78089 AJ |
165 | goto error; |
166 | } | |
167 | ||
1dca5e24 AJ |
168 | if (!(file = create_file_for_fd( fd, access, sharing, attrs ))) |
169 | { | |
170 | free( name ); | |
171 | return NULL; | |
172 | } | |
5bc78089 AJ |
173 | file->name = name; |
174 | file->next = file_hash[hash]; | |
175 | file_hash[hash] = file; | |
176 | return file; | |
177 | ||
178 | file_error: | |
179 | file_set_error(); | |
180 | error: | |
181 | if (fd != -1) close( fd ); | |
182 | free( name ); | |
183 | return NULL; | |
338e757d AJ |
184 | } |
185 | ||
5bc78089 AJ |
186 | /* Create an anonymous Unix file */ |
187 | int create_anonymous_file(void) | |
cb28bdc2 | 188 | { |
cb28bdc2 AJ |
189 | char *name; |
190 | int fd; | |
191 | ||
192 | do | |
193 | { | |
194 | if (!(name = tmpnam(NULL))) | |
195 | { | |
cb1fc735 | 196 | set_error( STATUS_TOO_MANY_OPENED_FILES ); |
5bc78089 | 197 | return -1; |
cb28bdc2 AJ |
198 | } |
199 | fd = open( name, O_CREAT | O_EXCL | O_RDWR, 0600 ); | |
200 | } while ((fd == -1) && (errno == EEXIST)); | |
201 | if (fd == -1) | |
202 | { | |
203 | file_set_error(); | |
5bc78089 | 204 | return -1; |
cb28bdc2 AJ |
205 | } |
206 | unlink( name ); | |
5bc78089 AJ |
207 | return fd; |
208 | } | |
cb28bdc2 | 209 | |
5bc78089 AJ |
210 | /* Create a temp file for anonymous mappings */ |
211 | struct file *create_temp_file( int access ) | |
212 | { | |
5bc78089 AJ |
213 | int fd; |
214 | ||
ebe29ef3 | 215 | if ((fd = create_anonymous_file()) == -1) return NULL; |
1dca5e24 | 216 | return create_file_for_fd( fd, access, 0, 0 ); |
cb28bdc2 AJ |
217 | } |
218 | ||
338e757d AJ |
219 | static void file_dump( struct object *obj, int verbose ) |
220 | { | |
221 | struct file *file = (struct file *)obj; | |
222 | assert( obj->ops == &file_ops ); | |
1dca5e24 | 223 | fprintf( stderr, "File fd=%d flags=%08x name='%s'\n", file->obj.fd, file->flags, file->name ); |
338e757d AJ |
224 | } |
225 | ||
1dca5e24 | 226 | static int file_get_poll_events( struct object *obj ) |
338e757d AJ |
227 | { |
228 | struct file *file = (struct file *)obj; | |
57e11313 | 229 | int events = 0; |
338e757d | 230 | assert( obj->ops == &file_ops ); |
247b8aee AJ |
231 | if (file->access & GENERIC_READ) events |= POLLIN; |
232 | if (file->access & GENERIC_WRITE) events |= POLLOUT; | |
1dca5e24 | 233 | return events; |
338e757d AJ |
234 | } |
235 | ||
aa0ebd0f | 236 | static int file_get_read_fd( struct object *obj ) |
338e757d | 237 | { |
aa0ebd0f AJ |
238 | struct file *file = (struct file *)obj; |
239 | assert( obj->ops == &file_ops ); | |
1dca5e24 | 240 | return dup( file->obj.fd ); |
338e757d AJ |
241 | } |
242 | ||
aa0ebd0f | 243 | static int file_get_write_fd( struct object *obj ) |
338e757d AJ |
244 | { |
245 | struct file *file = (struct file *)obj; | |
246 | assert( obj->ops == &file_ops ); | |
1dca5e24 | 247 | return dup( file->obj.fd ); |
338e757d AJ |
248 | } |
249 | ||
aa0ebd0f | 250 | static int file_flush( struct object *obj ) |
338e757d | 251 | { |
aa0ebd0f AJ |
252 | int ret; |
253 | struct file *file = (struct file *)grab_object(obj); | |
254 | assert( obj->ops == &file_ops ); | |
338e757d | 255 | |
1dca5e24 | 256 | ret = (fsync( file->obj.fd ) != -1); |
aa0ebd0f AJ |
257 | if (!ret) file_set_error(); |
258 | release_object( file ); | |
259 | return ret; | |
338e757d AJ |
260 | } |
261 | ||
ebe29ef3 | 262 | static int file_get_info( struct object *obj, struct get_file_info_request *req ) |
0562539d AJ |
263 | { |
264 | struct stat st; | |
265 | struct file *file = (struct file *)obj; | |
266 | assert( obj->ops == &file_ops ); | |
267 | ||
1dca5e24 | 268 | if (fstat( file->obj.fd, &st ) == -1) |
0562539d AJ |
269 | { |
270 | file_set_error(); | |
271 | return 0; | |
272 | } | |
273 | if (S_ISCHR(st.st_mode) || S_ISFIFO(st.st_mode) || | |
1dca5e24 | 274 | S_ISSOCK(st.st_mode) || isatty(file->obj.fd)) req->type = FILE_TYPE_CHAR; |
ebe29ef3 AJ |
275 | else req->type = FILE_TYPE_DISK; |
276 | if (S_ISDIR(st.st_mode)) req->attr = FILE_ATTRIBUTE_DIRECTORY; | |
277 | else req->attr = FILE_ATTRIBUTE_ARCHIVE; | |
278 | if (!(st.st_mode & S_IWUSR)) req->attr |= FILE_ATTRIBUTE_READONLY; | |
279 | req->access_time = st.st_atime; | |
280 | req->write_time = st.st_mtime; | |
281 | req->size_high = 0; | |
282 | req->size_low = S_ISDIR(st.st_mode) ? 0 : st.st_size; | |
283 | req->links = st.st_nlink; | |
284 | req->index_high = st.st_dev; | |
285 | req->index_low = st.st_ino; | |
286 | req->serial = 0; /* FIXME */ | |
0562539d AJ |
287 | return 1; |
288 | } | |
289 | ||
aa0ebd0f | 290 | static void file_destroy( struct object *obj ) |
338e757d | 291 | { |
aa0ebd0f AJ |
292 | struct file *file = (struct file *)obj; |
293 | assert( obj->ops == &file_ops ); | |
0562539d | 294 | |
638f169b AJ |
295 | if (file->name) |
296 | { | |
297 | /* remove it from the hashing list */ | |
298 | struct file **pptr = &file_hash[get_name_hash( file->name )]; | |
299 | while (*pptr && *pptr != file) pptr = &(*pptr)->next; | |
300 | assert( *pptr ); | |
301 | *pptr = (*pptr)->next; | |
cddfcce5 | 302 | if (file->flags & FILE_FLAG_DELETE_ON_CLOSE) unlink( file->name ); |
638f169b AJ |
303 | free( file->name ); |
304 | } | |
aa0ebd0f AJ |
305 | } |
306 | ||
307 | /* set the last error depending on errno */ | |
308 | void file_set_error(void) | |
309 | { | |
310 | switch (errno) | |
311 | { | |
cb1fc735 AJ |
312 | case EAGAIN: set_error( STATUS_SHARING_VIOLATION ); break; |
313 | case EBADF: set_error( STATUS_INVALID_HANDLE ); break; | |
314 | case ENOSPC: set_error( STATUS_DISK_FULL ); break; | |
aa0ebd0f | 315 | case EACCES: |
cb1fc735 AJ |
316 | case EPERM: set_error( STATUS_ACCESS_DENIED ); break; |
317 | case EROFS: set_error( STATUS_MEDIA_WRITE_PROTECTED ); break; | |
318 | case EBUSY: set_error( STATUS_FILE_LOCK_CONFLICT ); break; | |
319 | case ENOENT: set_error( STATUS_NO_SUCH_FILE ); break; | |
320 | case EISDIR: set_error( 0xc0010000 | ERROR_CANNOT_MAKE /* FIXME */ ); break; | |
aa0ebd0f | 321 | case ENFILE: |
cb1fc735 AJ |
322 | case EMFILE: set_error( STATUS_NO_MORE_FILES ); break; |
323 | case EEXIST: set_error( STATUS_OBJECT_NAME_COLLISION ); break; | |
324 | case EINVAL: set_error( STATUS_INVALID_PARAMETER ); break; | |
325 | case ESPIPE: set_error( 0xc0010000 | ERROR_SEEK /* FIXME */ ); break; | |
326 | case ENOTEMPTY: set_error( STATUS_DIRECTORY_NOT_EMPTY ); break; | |
327 | case EIO: set_error( STATUS_ACCESS_VIOLATION ); break; | |
328 | default: perror("file_set_error"); set_error( ERROR_UNKNOWN /* FIXME */ ); break; | |
aa0ebd0f | 329 | } |
338e757d AJ |
330 | } |
331 | ||
61ec6c1c | 332 | struct file *get_file_obj( struct process *process, int handle, unsigned int access ) |
338e757d | 333 | { |
61ec6c1c | 334 | return (struct file *)get_handle_obj( process, handle, access, &file_ops ); |
a8b8d9c0 | 335 | } |
338e757d | 336 | |
a8b8d9c0 AJ |
337 | int file_get_mmap_fd( struct file *file ) |
338 | { | |
1dca5e24 | 339 | return dup( file->obj.fd ); |
338e757d AJ |
340 | } |
341 | ||
43c190e7 | 342 | static int set_file_pointer( int handle, int *low, int *high, int whence ) |
aa0ebd0f AJ |
343 | { |
344 | struct file *file; | |
345 | int result; | |
346 | ||
347 | if (*high) | |
348 | { | |
349 | fprintf( stderr, "set_file_pointer: offset > 4Gb not supported yet\n" ); | |
cb1fc735 | 350 | set_error( STATUS_INVALID_PARAMETER ); |
aa0ebd0f AJ |
351 | return 0; |
352 | } | |
353 | ||
a8b8d9c0 | 354 | if (!(file = get_file_obj( current->process, handle, 0 ))) |
aa0ebd0f | 355 | return 0; |
1dca5e24 | 356 | if ((result = lseek( file->obj.fd, *low, whence )) == -1) |
aa0ebd0f AJ |
357 | { |
358 | /* Check for seek before start of file */ | |
359 | if ((errno == EINVAL) && (whence != SEEK_SET) && (*low < 0)) | |
cb1fc735 | 360 | set_error( 0xc0010000 | ERROR_NEGATIVE_SEEK /* FIXME */ ); |
aa0ebd0f AJ |
361 | else |
362 | file_set_error(); | |
363 | release_object( file ); | |
364 | return 0; | |
365 | } | |
366 | *low = result; | |
367 | release_object( file ); | |
368 | return 1; | |
369 | } | |
370 | ||
43c190e7 | 371 | static int truncate_file( int handle ) |
aa0ebd0f AJ |
372 | { |
373 | struct file *file; | |
374 | int result; | |
375 | ||
a8b8d9c0 | 376 | if (!(file = get_file_obj( current->process, handle, GENERIC_WRITE ))) |
aa0ebd0f | 377 | return 0; |
1dca5e24 AJ |
378 | if (((result = lseek( file->obj.fd, 0, SEEK_CUR )) == -1) || |
379 | (ftruncate( file->obj.fd, result ) == -1)) | |
aa0ebd0f AJ |
380 | { |
381 | file_set_error(); | |
382 | release_object( file ); | |
383 | return 0; | |
384 | } | |
385 | release_object( file ); | |
386 | return 1; | |
387 | ||
388 | } | |
389 | ||
cb28bdc2 AJ |
390 | /* try to grow the file to the specified size */ |
391 | int grow_file( struct file *file, int size_high, int size_low ) | |
392 | { | |
393 | struct stat st; | |
394 | ||
395 | if (size_high) | |
396 | { | |
cb1fc735 | 397 | set_error( STATUS_INVALID_PARAMETER ); |
cb28bdc2 AJ |
398 | return 0; |
399 | } | |
1dca5e24 | 400 | if (fstat( file->obj.fd, &st ) == -1) |
cb28bdc2 AJ |
401 | { |
402 | file_set_error(); | |
403 | return 0; | |
404 | } | |
405 | if (st.st_size >= size_low) return 1; /* already large enough */ | |
1dca5e24 | 406 | if (ftruncate( file->obj.fd, size_low ) != -1) return 1; |
cb28bdc2 AJ |
407 | file_set_error(); |
408 | return 0; | |
409 | } | |
410 | ||
43c190e7 | 411 | static int set_file_time( int handle, time_t access_time, time_t write_time ) |
338e757d AJ |
412 | { |
413 | struct file *file; | |
0562539d | 414 | struct utimbuf utimbuf; |
338e757d | 415 | |
0562539d | 416 | if (!(file = get_file_obj( current->process, handle, GENERIC_WRITE ))) |
338e757d | 417 | return 0; |
a27b48b1 | 418 | if (!access_time || !write_time) |
338e757d | 419 | { |
a27b48b1 AJ |
420 | struct stat st; |
421 | if (stat( file->name, &st ) == -1) goto error; | |
422 | if (!access_time) access_time = st.st_atime; | |
423 | if (!write_time) write_time = st.st_mtime; | |
338e757d | 424 | } |
a27b48b1 AJ |
425 | utimbuf.actime = access_time; |
426 | utimbuf.modtime = write_time; | |
427 | if (utime( file->name, &utimbuf ) == -1) goto error; | |
338e757d AJ |
428 | release_object( file ); |
429 | return 1; | |
a27b48b1 AJ |
430 | error: |
431 | file_set_error(); | |
432 | release_object( file ); | |
433 | return 0; | |
338e757d | 434 | } |
62a8b433 | 435 | |
43c190e7 AJ |
436 | static int file_lock( struct file *file, int offset_high, int offset_low, |
437 | int count_high, int count_low ) | |
62a8b433 AJ |
438 | { |
439 | /* FIXME: implement this */ | |
440 | return 1; | |
441 | } | |
442 | ||
43c190e7 AJ |
443 | static int file_unlock( struct file *file, int offset_high, int offset_low, |
444 | int count_high, int count_low ) | |
62a8b433 AJ |
445 | { |
446 | /* FIXME: implement this */ | |
447 | return 1; | |
448 | } | |
ebe29ef3 | 449 | |
43c190e7 AJ |
450 | /* create a file */ |
451 | DECL_HANDLER(create_file) | |
452 | { | |
ef88637f | 453 | size_t len = get_req_strlen( req, req->name ); |
ebe29ef3 | 454 | struct file *file; |
43c190e7 | 455 | |
ebe29ef3 AJ |
456 | req->handle = -1; |
457 | if ((file = create_file( req->name, len, req->access, | |
458 | req->sharing, req->create, req->attrs ))) | |
43c190e7 | 459 | { |
ebe29ef3 AJ |
460 | req->handle = alloc_handle( current->process, file, req->access, req->inherit ); |
461 | release_object( file ); | |
5bc78089 | 462 | } |
ebe29ef3 AJ |
463 | } |
464 | ||
465 | /* allocate a file handle for a Unix fd */ | |
466 | DECL_HANDLER(alloc_file_handle) | |
467 | { | |
468 | struct file *file; | |
469 | ||
470 | req->handle = -1; | |
ea0d028a | 471 | if (current->pass_fd != -1) |
5bc78089 | 472 | { |
ea0d028a AJ |
473 | if ((file = create_file_for_fd( current->pass_fd, req->access, |
474 | FILE_SHARE_READ | FILE_SHARE_WRITE, 0 ))) | |
ebe29ef3 AJ |
475 | { |
476 | req->handle = alloc_handle( current->process, file, req->access, 0 ); | |
477 | release_object( file ); | |
478 | } | |
ea0d028a | 479 | current->pass_fd = -1; |
43c190e7 | 480 | } |
ea0d028a | 481 | else set_error( STATUS_INVALID_PARAMETER ); |
43c190e7 AJ |
482 | } |
483 | ||
484 | /* get a Unix fd to read from a file */ | |
485 | DECL_HANDLER(get_read_fd) | |
486 | { | |
487 | struct object *obj; | |
43c190e7 AJ |
488 | |
489 | if ((obj = get_handle_obj( current->process, req->handle, GENERIC_READ, NULL ))) | |
490 | { | |
ebe29ef3 | 491 | set_reply_fd( current, obj->ops->get_read_fd( obj ) ); |
43c190e7 AJ |
492 | release_object( obj ); |
493 | } | |
43c190e7 AJ |
494 | } |
495 | ||
496 | /* get a Unix fd to write to a file */ | |
497 | DECL_HANDLER(get_write_fd) | |
498 | { | |
499 | struct object *obj; | |
43c190e7 AJ |
500 | |
501 | if ((obj = get_handle_obj( current->process, req->handle, GENERIC_WRITE, NULL ))) | |
502 | { | |
ebe29ef3 | 503 | set_reply_fd( current, obj->ops->get_write_fd( obj ) ); |
43c190e7 AJ |
504 | release_object( obj ); |
505 | } | |
43c190e7 AJ |
506 | } |
507 | ||
508 | /* set a file current position */ | |
509 | DECL_HANDLER(set_file_pointer) | |
510 | { | |
ebe29ef3 AJ |
511 | int high = req->high; |
512 | int low = req->low; | |
513 | set_file_pointer( req->handle, &low, &high, req->whence ); | |
514 | req->new_low = low; | |
515 | req->new_high = high; | |
43c190e7 AJ |
516 | } |
517 | ||
518 | /* truncate (or extend) a file */ | |
519 | DECL_HANDLER(truncate_file) | |
520 | { | |
521 | truncate_file( req->handle ); | |
43c190e7 AJ |
522 | } |
523 | ||
524 | /* flush a file buffers */ | |
525 | DECL_HANDLER(flush_file) | |
526 | { | |
527 | struct object *obj; | |
528 | ||
9d60e350 | 529 | if ((obj = get_handle_obj( current->process, req->handle, 0, NULL ))) |
43c190e7 AJ |
530 | { |
531 | obj->ops->flush( obj ); | |
532 | release_object( obj ); | |
533 | } | |
43c190e7 AJ |
534 | } |
535 | ||
536 | /* set a file access and modification times */ | |
537 | DECL_HANDLER(set_file_time) | |
538 | { | |
539 | set_file_time( req->handle, req->access_time, req->write_time ); | |
43c190e7 AJ |
540 | } |
541 | ||
542 | /* get a file information */ | |
543 | DECL_HANDLER(get_file_info) | |
544 | { | |
545 | struct object *obj; | |
43c190e7 AJ |
546 | |
547 | if ((obj = get_handle_obj( current->process, req->handle, 0, NULL ))) | |
548 | { | |
ebe29ef3 | 549 | obj->ops->get_file_info( obj, req ); |
43c190e7 AJ |
550 | release_object( obj ); |
551 | } | |
43c190e7 AJ |
552 | } |
553 | ||
554 | /* lock a region of a file */ | |
555 | DECL_HANDLER(lock_file) | |
556 | { | |
557 | struct file *file; | |
558 | ||
559 | if ((file = get_file_obj( current->process, req->handle, 0 ))) | |
560 | { | |
561 | file_lock( file, req->offset_high, req->offset_low, | |
562 | req->count_high, req->count_low ); | |
563 | release_object( file ); | |
564 | } | |
43c190e7 AJ |
565 | } |
566 | ||
567 | /* unlock a region of a file */ | |
568 | DECL_HANDLER(unlock_file) | |
569 | { | |
570 | struct file *file; | |
571 | ||
572 | if ((file = get_file_obj( current->process, req->handle, 0 ))) | |
573 | { | |
574 | file_unlock( file, req->offset_high, req->offset_low, | |
575 | req->count_high, req->count_low ); | |
576 | release_object( file ); | |
577 | } | |
43c190e7 | 578 | } |