[590] | 1 | //vio.c: |
---|
| 2 | |
---|
[690] | 3 | /* |
---|
[1284] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008, 2009 |
---|
[690] | 5 | * |
---|
| 6 | * This file is part of libroar a part of RoarAudio, |
---|
| 7 | * a cross-platform sound system for both, home and professional use. |
---|
| 8 | * See README for details. |
---|
| 9 | * |
---|
| 10 | * This file is free software; you can redistribute it and/or modify |
---|
| 11 | * it under the terms of the GNU General Public License version 3 |
---|
| 12 | * as published by the Free Software Foundation. |
---|
| 13 | * |
---|
| 14 | * libroar is distributed in the hope that it will be useful, |
---|
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 17 | * GNU General Public License for more details. |
---|
| 18 | * |
---|
| 19 | * You should have received a copy of the GNU General Public License |
---|
| 20 | * along with this software; see the file COPYING. If not, write to |
---|
| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
---|
| 22 | * |
---|
| 23 | * NOTE for everyone want's to change something and send patches: |
---|
| 24 | * read README and HACKING! There a addition information on |
---|
| 25 | * the license of this document you need to read before you send |
---|
| 26 | * any patches. |
---|
| 27 | * |
---|
| 28 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
---|
| 29 | * or libpulse*: |
---|
| 30 | * The libs libroaresd, libroararts and libroarpulse link this lib |
---|
| 31 | * and are therefore GPL. Because of this it may be illigal to use |
---|
| 32 | * them with any software that uses libesd, libartsc or libpulse*. |
---|
| 33 | */ |
---|
| 34 | |
---|
[590] | 35 | #include "libroar.h" |
---|
| 36 | |
---|
[1474] | 37 | #ifdef ROAR_HAVE_IO_POSIX |
---|
| 38 | #define _CAN_OPERATE |
---|
| 39 | #endif |
---|
| 40 | |
---|
[591] | 41 | int roar_vio_init_calls (struct roar_vio_calls * calls) { |
---|
[1474] | 42 | #ifdef _CAN_OPERATE |
---|
[1118] | 43 | if ( calls == NULL ) |
---|
[591] | 44 | return -1; |
---|
| 45 | |
---|
| 46 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
---|
| 47 | |
---|
[881] | 48 | /* |
---|
[597] | 49 | calls->read = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))read; |
---|
| 50 | calls->write = (ssize_t (*)(int fd, void *buf, size_t count, void * inst))write; |
---|
| 51 | calls->lseek = (off_t (*)(int fildes, off_t offset, int whence, void * inst))lseek; |
---|
[881] | 52 | */ |
---|
| 53 | |
---|
[1118] | 54 | calls->read = roar_vio_basic_read; |
---|
| 55 | calls->write = roar_vio_basic_write; |
---|
| 56 | calls->lseek = roar_vio_basic_lseek; |
---|
| 57 | calls->nonblock = roar_vio_basic_nonblock; |
---|
| 58 | calls->sync = roar_vio_basic_sync; |
---|
[1505] | 59 | calls->ctl = roar_vio_basic_ctl; |
---|
[1241] | 60 | calls->close = roar_vio_basic_close; |
---|
[881] | 61 | |
---|
| 62 | return 0; |
---|
[1474] | 63 | #else |
---|
| 64 | return -1; |
---|
| 65 | #endif |
---|
[881] | 66 | } |
---|
| 67 | |
---|
| 68 | int roar_vio_set_inst (struct roar_vio_calls * vio, void * inst) { |
---|
| 69 | if ( vio == NULL ) |
---|
| 70 | return -1; |
---|
| 71 | |
---|
| 72 | vio->inst = inst; |
---|
[591] | 73 | |
---|
| 74 | return 0; |
---|
| 75 | } |
---|
| 76 | |
---|
[881] | 77 | int roar_vio_set_fh (struct roar_vio_calls * vio, int fh) { |
---|
[989] | 78 | return roar_vio_set_inst(vio, (void*)(ROAR_INSTINT)(fh + 1)); |
---|
[881] | 79 | } |
---|
| 80 | |
---|
| 81 | int roar_vio_get_fh (struct roar_vio_calls * vio) { |
---|
| 82 | if ( vio == NULL ) |
---|
| 83 | return -1; |
---|
| 84 | |
---|
[989] | 85 | return ((int)(ROAR_INSTINT)vio->inst) - 1; |
---|
[881] | 86 | } |
---|
| 87 | |
---|
| 88 | |
---|
| 89 | ssize_t roar_vio_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
[1319] | 90 | ROAR_DBG("roar_vio_read(vio=%p, buf=%p, count=%u) = ?", vio, buf, (unsigned int)count); |
---|
| 91 | |
---|
[881] | 92 | if ( vio == NULL ) |
---|
| 93 | return -1; |
---|
| 94 | |
---|
| 95 | if ( vio->read == NULL ) |
---|
| 96 | return -1; |
---|
| 97 | |
---|
| 98 | return vio->read(vio, buf, count); |
---|
| 99 | } |
---|
| 100 | |
---|
| 101 | ssize_t roar_vio_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 102 | if ( vio == NULL ) |
---|
| 103 | return -1; |
---|
| 104 | |
---|
| 105 | if ( vio->write == NULL ) |
---|
| 106 | return -1; |
---|
| 107 | |
---|
| 108 | return vio->write(vio, buf, count); |
---|
| 109 | } |
---|
| 110 | |
---|
| 111 | off_t roar_vio_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
| 112 | if ( vio == NULL ) |
---|
| 113 | return -1; |
---|
| 114 | |
---|
| 115 | if ( vio->lseek == NULL ) |
---|
| 116 | return -1; |
---|
| 117 | |
---|
| 118 | return vio->lseek(vio, offset, whence); |
---|
| 119 | } |
---|
| 120 | |
---|
[1118] | 121 | int roar_vio_nonblock(struct roar_vio_calls * vio, int state) { |
---|
| 122 | if ( vio == NULL ) |
---|
| 123 | return -1; |
---|
| 124 | |
---|
| 125 | if ( vio->nonblock == NULL ) |
---|
| 126 | return -1; |
---|
| 127 | |
---|
| 128 | return vio->nonblock(vio, state); |
---|
| 129 | } |
---|
| 130 | |
---|
| 131 | int roar_vio_sync (struct roar_vio_calls * vio) { |
---|
| 132 | if ( vio == NULL ) |
---|
| 133 | return -1; |
---|
| 134 | |
---|
| 135 | if ( vio->sync == NULL ) |
---|
| 136 | return -1; |
---|
| 137 | |
---|
| 138 | return vio->sync(vio); |
---|
| 139 | } |
---|
| 140 | |
---|
[1140] | 141 | int roar_vio_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
---|
| 142 | if ( vio == NULL ) |
---|
| 143 | return -1; |
---|
| 144 | |
---|
[1615] | 145 | ROAR_DBG("roar_vio_ctl(vio=%p, cmd=0x%.8x, data=%p): vio->ctl=%p", vio, cmd, data, vio->ctl); |
---|
| 146 | |
---|
[1140] | 147 | if ( vio->ctl == NULL ) |
---|
| 148 | return -1; |
---|
| 149 | |
---|
| 150 | return vio->ctl(vio, cmd, data); |
---|
| 151 | } |
---|
| 152 | |
---|
[1241] | 153 | int roar_vio_close (struct roar_vio_calls * vio) { |
---|
| 154 | if ( vio == NULL ) |
---|
| 155 | return -1; |
---|
| 156 | |
---|
[1258] | 157 | if ( vio->close == NULL ) |
---|
[1241] | 158 | return -1; |
---|
| 159 | |
---|
| 160 | return vio->close(vio); |
---|
| 161 | } |
---|
| 162 | |
---|
[1252] | 163 | // converters: |
---|
| 164 | int roar_vio_open_file (struct roar_vio_calls * calls, char * filename, int flags, mode_t mode) { |
---|
[1474] | 165 | #ifdef _CAN_OPERATE |
---|
[1252] | 166 | int fh; |
---|
| 167 | |
---|
| 168 | if ( calls == NULL || filename == NULL ) |
---|
| 169 | return -1; |
---|
| 170 | |
---|
[1762] | 171 | #ifdef ROAR_TARGET_WIN32 |
---|
| 172 | flags |= O_BINARY; |
---|
| 173 | #endif |
---|
| 174 | |
---|
[1252] | 175 | if ( (fh = open(filename, flags, mode)) == -1 ) |
---|
| 176 | return -1; |
---|
| 177 | |
---|
| 178 | if ( roar_vio_open_fh(calls, fh) == -1 ) { |
---|
| 179 | close(fh); |
---|
| 180 | return -1; |
---|
| 181 | } |
---|
| 182 | |
---|
| 183 | return 0; |
---|
[1474] | 184 | #else |
---|
| 185 | return -1; |
---|
| 186 | #endif |
---|
[1252] | 187 | } |
---|
| 188 | |
---|
| 189 | int roar_vio_open_fh (struct roar_vio_calls * calls, int fh) { |
---|
| 190 | if ( calls == NULL ) |
---|
| 191 | return -1; |
---|
| 192 | |
---|
| 193 | if ( roar_vio_init_calls(calls) == -1 ) |
---|
| 194 | return -1; |
---|
| 195 | |
---|
| 196 | return roar_vio_set_fh(calls, fh); |
---|
| 197 | } |
---|
| 198 | |
---|
[1290] | 199 | int roar_vio_open_fh_socket(struct roar_vio_calls * calls, int fh) { |
---|
| 200 | if ( calls == NULL ) |
---|
| 201 | return -1; |
---|
| 202 | |
---|
[1666] | 203 | if ( roar_vio_open_fh(calls, fh) == -1 ) |
---|
| 204 | return -1; |
---|
| 205 | |
---|
[1760] | 206 | #ifdef ROAR_TARGET_WIN32 |
---|
| 207 | calls->read = roar_vio_winsock_read; |
---|
| 208 | calls->write = roar_vio_winsock_write; |
---|
| 209 | calls->nonblock = roar_vio_winsock_nonblock; |
---|
| 210 | calls->sync = roar_vio_winsock_sync; |
---|
| 211 | calls->ctl = roar_vio_winsock_ctl; |
---|
| 212 | calls->close = roar_vio_winsock_close; |
---|
| 213 | #else |
---|
| 214 | calls->sync = roar_vio_null_sync; |
---|
| 215 | #endif |
---|
[1666] | 216 | |
---|
| 217 | return 0; |
---|
[1290] | 218 | } |
---|
| 219 | |
---|
[1291] | 220 | int roar_vio_open_socket (struct roar_vio_calls * calls, char * host, int port) { |
---|
| 221 | int fh; |
---|
| 222 | |
---|
| 223 | if ( calls == NULL ) |
---|
| 224 | return -1; |
---|
| 225 | |
---|
| 226 | if ( (fh = roar_socket_connect(host, port)) == -1 ) |
---|
| 227 | return -1; |
---|
| 228 | |
---|
| 229 | return roar_vio_open_fh_socket(calls, fh); |
---|
| 230 | } |
---|
| 231 | |
---|
| 232 | int roar_vio_open_socket_listen(struct roar_vio_calls * calls, int type, char * host, int port) { |
---|
| 233 | int fh; |
---|
| 234 | |
---|
| 235 | if ( calls == NULL ) |
---|
| 236 | return -1; |
---|
| 237 | |
---|
| 238 | if ( (fh = roar_socket_listen(type, host, port)) == -1 ) |
---|
| 239 | return -1; |
---|
| 240 | |
---|
| 241 | return roar_vio_open_fh_socket(calls, fh); |
---|
| 242 | } |
---|
| 243 | |
---|
[1275] | 244 | int roar_vio_simple_stream (struct roar_vio_calls * calls, int rate, int channels, int bits, int codec, |
---|
| 245 | char * server, int dir, char * name) { |
---|
| 246 | int fh; |
---|
| 247 | |
---|
| 248 | if ( calls == NULL ) |
---|
| 249 | return -1; |
---|
| 250 | |
---|
| 251 | if ( (fh = roar_simple_stream(rate, channels, bits, codec, server, dir, name)) == -1 ) |
---|
| 252 | return -1; |
---|
| 253 | |
---|
[1290] | 254 | return roar_vio_open_fh_socket(calls, fh); |
---|
[1275] | 255 | } |
---|
| 256 | |
---|
[2841] | 257 | int roar_vio_simple_new_stream_obj (struct roar_vio_calls * calls, |
---|
| 258 | struct roar_connection * con, |
---|
| 259 | struct roar_stream * s, |
---|
| 260 | int rate, int channels, int bits, int codec, int dir) { |
---|
| 261 | int fh; |
---|
| 262 | |
---|
| 263 | if ( calls == NULL ) |
---|
| 264 | return -1; |
---|
| 265 | |
---|
| 266 | if ( (fh = roar_simple_new_stream_obj(con, s, rate, channels, bits, codec, dir)) == -1 ) |
---|
| 267 | return -1; |
---|
| 268 | |
---|
| 269 | return roar_vio_open_fh_socket(calls, fh); |
---|
| 270 | } |
---|
| 271 | |
---|
[886] | 272 | // VIOs: |
---|
[881] | 273 | |
---|
[886] | 274 | // basic |
---|
[881] | 275 | ssize_t roar_vio_basic_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
[1474] | 276 | #ifdef _CAN_OPERATE |
---|
[881] | 277 | return read(roar_vio_get_fh(vio), buf, count); |
---|
[1474] | 278 | #else |
---|
| 279 | return -1; |
---|
| 280 | #endif |
---|
[881] | 281 | } |
---|
| 282 | |
---|
| 283 | ssize_t roar_vio_basic_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
[1474] | 284 | #ifdef _CAN_OPERATE |
---|
[881] | 285 | return write(roar_vio_get_fh(vio), buf, count); |
---|
[1474] | 286 | #else |
---|
| 287 | return -1; |
---|
| 288 | #endif |
---|
[881] | 289 | } |
---|
| 290 | |
---|
| 291 | off_t roar_vio_basic_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
[1474] | 292 | #ifdef _CAN_OPERATE |
---|
[881] | 293 | return lseek(roar_vio_get_fh(vio), offset, whence); |
---|
[1474] | 294 | #else |
---|
| 295 | return -1; |
---|
| 296 | #endif |
---|
[881] | 297 | } |
---|
| 298 | |
---|
[1118] | 299 | int roar_vio_basic_nonblock(struct roar_vio_calls * vio, int state) { |
---|
| 300 | if ( roar_socket_nonblock(roar_vio_get_fh(vio), state) == -1 ) |
---|
| 301 | return -1; |
---|
| 302 | |
---|
| 303 | if ( state == ROAR_SOCKET_NONBLOCK ) |
---|
| 304 | return 0; |
---|
| 305 | |
---|
[1125] | 306 | roar_vio_sync(vio); |
---|
| 307 | |
---|
| 308 | return 0; |
---|
[1118] | 309 | } |
---|
| 310 | |
---|
| 311 | int roar_vio_basic_sync (struct roar_vio_calls * vio) { |
---|
[1397] | 312 | #ifdef ROAR_FDATASYNC |
---|
[1171] | 313 | return ROAR_FDATASYNC(roar_vio_get_fh(vio)); |
---|
[1397] | 314 | #else |
---|
| 315 | return 0; |
---|
| 316 | #endif |
---|
[1118] | 317 | } |
---|
| 318 | |
---|
[1505] | 319 | int roar_vio_basic_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
---|
| 320 | |
---|
| 321 | if ( vio == NULL || cmd == -1 ) |
---|
| 322 | return -1; |
---|
| 323 | |
---|
[1615] | 324 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
---|
| 325 | |
---|
[1505] | 326 | switch (cmd) { |
---|
| 327 | case ROAR_VIO_CTL_GET_FH: |
---|
| 328 | case ROAR_VIO_CTL_GET_READ_FH: |
---|
| 329 | case ROAR_VIO_CTL_GET_WRITE_FH: |
---|
[1615] | 330 | ROAR_DBG("roar_vio_basic_ctl(vio=%p, cmd=ROAR_VIO_CTL_GET_*FH(0x%.8x), data=%p) = 0 // fh=%i", vio, cmd, data, roar_vio_get_fh(vio)); |
---|
[1505] | 331 | *(int*)data = roar_vio_get_fh(vio); |
---|
| 332 | return 0; |
---|
| 333 | break; |
---|
[2054] | 334 | case ROAR_VIO_CTL_SET_NOSYNC: |
---|
| 335 | vio->sync = NULL; |
---|
| 336 | return 0; |
---|
| 337 | break; |
---|
[1505] | 338 | } |
---|
| 339 | |
---|
| 340 | return -1; |
---|
| 341 | } |
---|
| 342 | |
---|
[1241] | 343 | int roar_vio_basic_close (struct roar_vio_calls * vio) { |
---|
[1474] | 344 | #ifdef _CAN_OPERATE |
---|
[1336] | 345 | if ( roar_vio_get_fh(vio) != -1 ) |
---|
| 346 | return close(roar_vio_get_fh(vio)); |
---|
| 347 | |
---|
| 348 | return 0; |
---|
[1474] | 349 | #else |
---|
| 350 | return -1; |
---|
| 351 | #endif |
---|
[1241] | 352 | } |
---|
| 353 | |
---|
[1760] | 354 | #ifdef ROAR_TARGET_WIN32 |
---|
| 355 | ssize_t roar_vio_winsock_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 356 | return recv(roar_vio_get_fh(vio), buf, count, 0); |
---|
| 357 | } |
---|
| 358 | |
---|
| 359 | ssize_t roar_vio_winsock_write (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 360 | return send(roar_vio_get_fh(vio), buf, count, 0); |
---|
| 361 | } |
---|
| 362 | |
---|
| 363 | int roar_vio_winsock_nonblock(struct roar_vio_calls * vio, int state) { |
---|
| 364 | return -1; |
---|
| 365 | } |
---|
| 366 | int roar_vio_winsock_sync (struct roar_vio_calls * vio) { |
---|
| 367 | return 0; |
---|
| 368 | } |
---|
| 369 | int roar_vio_winsock_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
---|
| 370 | return -1; |
---|
| 371 | } |
---|
| 372 | int roar_vio_winsock_close (struct roar_vio_calls * vio) { |
---|
| 373 | |
---|
| 374 | closesocket(roar_vio_get_fh(vio)); |
---|
| 375 | |
---|
| 376 | return 0; |
---|
| 377 | } |
---|
| 378 | #endif |
---|
| 379 | |
---|
| 380 | |
---|
[943] | 381 | // null |
---|
| 382 | ssize_t roar_vio_null_rw (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 383 | if ( vio == NULL || buf == NULL ) |
---|
| 384 | return -1; |
---|
| 385 | |
---|
| 386 | return 0; |
---|
| 387 | } |
---|
| 388 | |
---|
[1665] | 389 | int roar_vio_null_sync (struct roar_vio_calls * vio) { |
---|
| 390 | return 0; |
---|
| 391 | } |
---|
| 392 | |
---|
[886] | 393 | // pass |
---|
[1247] | 394 | int roar_vio_open_pass (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
---|
| 395 | if ( calls == NULL ) |
---|
| 396 | return -1; |
---|
| 397 | |
---|
| 398 | memset((void*)calls, 0, sizeof(struct roar_vio_calls)); |
---|
| 399 | |
---|
| 400 | calls->read = roar_vio_pass_read; |
---|
| 401 | calls->write = roar_vio_pass_write; |
---|
| 402 | calls->lseek = roar_vio_pass_lseek; |
---|
| 403 | calls->nonblock = roar_vio_pass_nonblock; |
---|
| 404 | calls->sync = roar_vio_pass_sync; |
---|
[1615] | 405 | calls->ctl = roar_vio_pass_ctl; |
---|
[1247] | 406 | calls->close = roar_vio_pass_close; |
---|
| 407 | |
---|
| 408 | calls->inst = dst; |
---|
| 409 | |
---|
| 410 | return 0; |
---|
| 411 | } |
---|
| 412 | |
---|
[886] | 413 | ssize_t roar_vio_pass_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 414 | return roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count); |
---|
| 415 | } |
---|
| 416 | |
---|
| 417 | ssize_t roar_vio_pass_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 418 | return roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count); |
---|
| 419 | } |
---|
| 420 | |
---|
| 421 | off_t roar_vio_pass_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
| 422 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
---|
| 423 | } |
---|
| 424 | |
---|
[1241] | 425 | int roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state) { |
---|
| 426 | return roar_vio_nonblock((struct roar_vio_calls *) vio->inst, state); |
---|
| 427 | } |
---|
| 428 | |
---|
| 429 | int roar_vio_pass_sync (struct roar_vio_calls * vio) { |
---|
| 430 | return roar_vio_sync((struct roar_vio_calls *) vio->inst); |
---|
| 431 | } |
---|
| 432 | |
---|
| 433 | int roar_vio_pass_ctl (struct roar_vio_calls * vio, int cmd, void * data) { |
---|
[1505] | 434 | if (vio == NULL || cmd == -1) |
---|
| 435 | return -1; |
---|
| 436 | |
---|
[1615] | 437 | ROAR_DBG("roar_vio_pass_ctl(vio=%p, cmd=0x%.8x, data=%p) = ?", vio, cmd, data); |
---|
| 438 | |
---|
[1505] | 439 | switch (cmd) { |
---|
| 440 | case ROAR_VIO_CTL_GET_NEXT: |
---|
| 441 | *(struct roar_vio_calls **)data = vio->inst; |
---|
| 442 | return 0; |
---|
| 443 | break; |
---|
| 444 | case ROAR_VIO_CTL_SET_NEXT: |
---|
| 445 | vio->inst = *(struct roar_vio_calls **)data; |
---|
| 446 | return 0; |
---|
| 447 | break; |
---|
| 448 | } |
---|
| 449 | |
---|
[1241] | 450 | return roar_vio_ctl((struct roar_vio_calls *) vio->inst, cmd, data); |
---|
| 451 | } |
---|
| 452 | |
---|
| 453 | int roar_vio_pass_close (struct roar_vio_calls * vio) { |
---|
| 454 | return roar_vio_close((struct roar_vio_calls *) vio->inst); |
---|
| 455 | } |
---|
| 456 | |
---|
[886] | 457 | |
---|
| 458 | // re |
---|
[1247] | 459 | int roar_vio_open_re (struct roar_vio_calls * calls, struct roar_vio_calls * dst) { |
---|
| 460 | if ( roar_vio_open_pass(calls, dst) == -1 ) |
---|
| 461 | return -1; |
---|
| 462 | |
---|
| 463 | calls->read = roar_vio_re_read; |
---|
| 464 | calls->write = roar_vio_re_write; |
---|
| 465 | calls->lseek = roar_vio_re_lseek; |
---|
| 466 | |
---|
| 467 | return 0; |
---|
| 468 | } |
---|
[886] | 469 | ssize_t roar_vio_re_read (struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 470 | size_t len = 0; |
---|
| 471 | ssize_t r = -1; |
---|
| 472 | |
---|
| 473 | if ( vio == NULL ) |
---|
| 474 | return -1; |
---|
| 475 | |
---|
| 476 | if ( vio->inst == NULL ) |
---|
| 477 | return -1; |
---|
| 478 | |
---|
| 479 | errno = 0; |
---|
| 480 | |
---|
| 481 | while ( (r = roar_vio_read((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
---|
| 482 | len += r; |
---|
| 483 | buf += r; |
---|
| 484 | count -= r; |
---|
| 485 | if ( count == 0 ) |
---|
| 486 | break; |
---|
| 487 | } |
---|
| 488 | |
---|
| 489 | if ( len == 0 && r == -1 ) |
---|
| 490 | return -1; |
---|
| 491 | |
---|
| 492 | return len; |
---|
| 493 | } |
---|
| 494 | |
---|
| 495 | ssize_t roar_vio_re_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
---|
| 496 | size_t len = 0; |
---|
| 497 | ssize_t r = -1; |
---|
| 498 | |
---|
| 499 | if ( vio == NULL ) |
---|
| 500 | return -1; |
---|
| 501 | |
---|
| 502 | if ( vio->inst == NULL ) |
---|
| 503 | return -1; |
---|
| 504 | |
---|
| 505 | errno = 0; |
---|
| 506 | |
---|
| 507 | while ( (r = roar_vio_write((struct roar_vio_calls *) vio->inst, buf, count)) > 0 ) { |
---|
| 508 | len += r; |
---|
| 509 | buf += r; |
---|
| 510 | count -= r; |
---|
| 511 | if ( count == 0 ) |
---|
| 512 | break; |
---|
| 513 | } |
---|
| 514 | |
---|
| 515 | if ( len == 0 && r == -1 ) |
---|
| 516 | return -1; |
---|
| 517 | |
---|
| 518 | return len; |
---|
| 519 | } |
---|
| 520 | |
---|
[1247] | 521 | // TODO: we should do a some more intelgent thing here. |
---|
[886] | 522 | off_t roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence) { |
---|
| 523 | return roar_vio_lseek((struct roar_vio_calls *) vio->inst, offset, whence); |
---|
| 524 | } |
---|
| 525 | |
---|
[590] | 526 | //ll |
---|