code.delx.au - pulseaudio/blob - src/utils/padsp.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   PulseAudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU Lesser General Public License as published
   8   by the Free Software Foundation; either version 2 of the License,
   9   or (at your option) any later version.
  10
  11   PulseAudio is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with PulseAudio; if not, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #ifdef _FILE_OFFSET_BITS
  27 #undef _FILE_OFFSET_BITS
  28 #endif
  29
  30 #ifndef _LARGEFILE64_SOURCE
  31 #define _LARGEFILE64_SOURCE 1
  32 #endif
  33
  34 #include <sys/soundcard.h>
  35 #include <sys/ioctl.h>
  36 #include <pthread.h>
  37 #include <unistd.h>
  38 #include <sys/socket.h>
  39 #include <dlfcn.h>
  40 #include <errno.h>
  41 #include <fcntl.h>
  42 #include <string.h>
  43 #include <stdarg.h>
  44 #include <stdio.h>
  45 #include <signal.h>
  46
  47 #include <linux/sockios.h>
  48
  49 #include <pulse/pulseaudio.h>
  50 #include <pulsecore/llist.h>
  51 #include <pulsecore/gccmacro.h>
  52
  53 typedef enum {
  54     FD_INFO_MIXER,
  55     FD_INFO_STREAM,
  56 } fd_info_type_t;
  57
  58 typedef struct fd_info fd_info;
  59
  60 struct fd_info {
  61     pthread_mutex_t mutex;
  62     int ref;
  63     int unusable;
  64
  65     fd_info_type_t type;
  66     int app_fd, thread_fd;
  67
  68     pa_sample_spec sample_spec;
  69     size_t fragment_size;
  70     unsigned n_fragments;
  71
  72     pa_threaded_mainloop *mainloop;
  73     pa_context *context;
  74     pa_stream *play_stream;
  75     pa_stream *rec_stream;
  76
  77     pa_io_event *io_event;
  78
  79     void *buf;
  80     size_t rec_offset;
  81
  82     int operation_success;
  83
  84     pa_cvolume sink_volume, source_volume;
  85     uint32_t sink_index, source_index;
  86     int volume_modify_count;
  87
  88     PA_LLIST_FIELDS(fd_info);
  89 };
  90
  91 static int dsp_drain(fd_info *i);
  92 static void fd_info_remove_from_list(fd_info *i);
  93
  94 static pthread_mutex_t fd_infos_mutex = PTHREAD_MUTEX_INITIALIZER;
  95 static pthread_mutex_t func_mutex = PTHREAD_MUTEX_INITIALIZER;
  96
  97 static PA_LLIST_HEAD(fd_info, fd_infos) = NULL;
  98
  99 static int (*_ioctl)(int, int, void*) = NULL;
 100 static int (*_close)(int) = NULL;
 101 static int (*_open)(const char *, int, mode_t) = NULL;
 102 static FILE* (*_fopen)(const char *path, const char *mode) = NULL;
 103 static int (*_open64)(const char *, int, mode_t) = NULL;
 104 static FILE* (*_fopen64)(const char *path, const char *mode) = NULL;
 105 static int (*_fclose)(FILE *f) = NULL;
 106 static int (*_access)(const char *, int) = NULL;
 107
 108 /* dlsym() violates ISO C, so confide the breakage into this function to
 109  * avoid warnings. */
 110 typedef void (*fnptr)(void);
 111 static inline fnptr dlsym_fn(void *handle, const char *symbol) {
 112     return (fnptr) (long) dlsym(handle, symbol);
 113 }
 114
 115 #define LOAD_IOCTL_FUNC() \
 116 do { \
 117     pthread_mutex_lock(&func_mutex); \
 118     if (!_ioctl)  \
 119         _ioctl = (int (*)(int, int, void*)) dlsym_fn(RTLD_NEXT, "ioctl"); \
 120     pthread_mutex_unlock(&func_mutex); \
 121 } while(0)
 122
 123 #define LOAD_OPEN_FUNC() \
 124 do { \
 125     pthread_mutex_lock(&func_mutex); \
 126     if (!_open) \
 127         _open = (int (*)(const char *, int, mode_t)) dlsym_fn(RTLD_NEXT, "open"); \
 128     pthread_mutex_unlock(&func_mutex); \
 129 } while(0)
 130
 131 #define LOAD_OPEN64_FUNC() \
 132 do { \
 133     pthread_mutex_lock(&func_mutex); \
 134     if (!_open64) \
 135         _open64 = (int (*)(const char *, int, mode_t)) dlsym_fn(RTLD_NEXT, "open64"); \
 136     pthread_mutex_unlock(&func_mutex); \
 137 } while(0)
 138
 139 #define LOAD_CLOSE_FUNC() \
 140 do { \
 141     pthread_mutex_lock(&func_mutex); \
 142     if (!_close) \
 143         _close = (int (*)(int)) dlsym_fn(RTLD_NEXT, "close"); \
 144     pthread_mutex_unlock(&func_mutex); \
 145 } while(0)
 146
 147 #define LOAD_ACCESS_FUNC() \
 148 do { \
 149     pthread_mutex_lock(&func_mutex); \
 150     if (!_access) \
 151         _access = (int (*)(const char*, int)) dlsym_fn(RTLD_NEXT, "access"); \
 152     pthread_mutex_unlock(&func_mutex); \
 153 } while(0)
 154
 155 #define LOAD_FOPEN_FUNC() \
 156 do { \
 157     pthread_mutex_lock(&func_mutex); \
 158     if (!_fopen) \
 159         _fopen = (FILE* (*)(const char *, const char*)) dlsym_fn(RTLD_NEXT, "fopen"); \
 160     pthread_mutex_unlock(&func_mutex); \
 161 } while(0)
 162
 163 #define LOAD_FOPEN64_FUNC() \
 164 do { \
 165     pthread_mutex_lock(&func_mutex); \
 166     if (!_fopen64) \
 167         _fopen64 = (FILE* (*)(const char *, const char*)) dlsym_fn(RTLD_NEXT, "fopen64"); \
 168     pthread_mutex_unlock(&func_mutex); \
 169 } while(0)
 170
 171 #define LOAD_FCLOSE_FUNC() \
 172 do { \
 173     pthread_mutex_lock(&func_mutex); \
 174     if (!_fclose) \
 175         _fclose = (int (*)(FILE *)) dlsym_fn(RTLD_NEXT, "fclose"); \
 176     pthread_mutex_unlock(&func_mutex); \
 177 } while(0)
 178
 179 #define CONTEXT_CHECK_DEAD_GOTO(i, label) do { \
 180 if (!(i)->context || pa_context_get_state((i)->context) != PA_CONTEXT_READY) { \
 181     debug(DEBUG_LEVEL_NORMAL, __FILE__": Not connected: %s", (i)->context ? pa_strerror(pa_context_errno((i)->context)) : "NULL"); \
 182     goto label; \
 183 } \
 184 } while(0);
 185
 186 #define PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, label) do { \
 187 if (!(i)->context || pa_context_get_state((i)->context) != PA_CONTEXT_READY || \
 188     !(i)->play_stream || pa_stream_get_state((i)->play_stream) != PA_STREAM_READY) { \
 189     debug(DEBUG_LEVEL_NORMAL, __FILE__": Not connected: %s", (i)->context ? pa_strerror(pa_context_errno((i)->context)) : "NULL"); \
 190     goto label; \
 191 } \
 192 } while(0);
 193
 194 #define RECORD_STREAM_CHECK_DEAD_GOTO(i, label) do { \
 195 if (!(i)->context || pa_context_get_state((i)->context) != PA_CONTEXT_READY || \
 196     !(i)->rec_stream || pa_stream_get_state((i)->rec_stream) != PA_STREAM_READY) { \
 197     debug(DEBUG_LEVEL_NORMAL, __FILE__": Not connected: %s", (i)->context ? pa_strerror(pa_context_errno((i)->context)) : "NULL"); \
 198     goto label; \
 199 } \
 200 } while(0);
 201
 202 static void debug(int level, const char *format, ...) PA_GCC_PRINTF_ATTR(2,3);
 203
 204 #define DEBUG_LEVEL_ALWAYS              0
 205 #define DEBUG_LEVEL_NORMAL              1
 206 #define DEBUG_LEVEL_VERBOSE             2
 207
 208 static void debug(int level, const char *format, ...) {
 209     va_list ap;
 210     const char *dlevel_s;
 211     int dlevel;
 212
 213     dlevel_s = getenv("PADSP_DEBUG");
 214     if (!dlevel_s)
 215         return;
 216
 217     dlevel = atoi(dlevel_s);
 218
 219     if (dlevel < level)
 220         return;
 221
 222     va_start(ap, format);
 223     vfprintf(stderr, format, ap);
 224     va_end(ap);
 225 }
 226
 227 static int padsp_disabled(void) {
 228     static int *sym;
 229     static int sym_resolved = 0;
 230
 231     /* If the current process has a symbol __padsp_disabled__ we use
 232      * it to detect whether we should enable our stuff or not. A
 233      * program needs to be compiled with -rdynamic for this to work!
 234      * The symbol must be an int containing a three bit bitmask: bit 1
 235      * -> disable /dev/dsp emulation, bit 2 -> disable /dev/sndstat
 236      * emulation, bit 3 -> disable /dev/mixer emulation. Hence a value
 237      * of 7 disables padsp entirely. */
 238
 239     pthread_mutex_lock(&func_mutex);
 240     if (!sym_resolved) {
 241         sym = (int*) dlsym(RTLD_DEFAULT, "__padsp_disabled__");
 242         sym_resolved = 1;
 243
 244     }
 245     pthread_mutex_unlock(&func_mutex);
 246
 247     if (!sym)
 248         return 0;
 249
 250     return *sym;
 251 }
 252
 253 static int dsp_cloak_enable(void) {
 254     if (padsp_disabled() & 1)
 255         return 0;
 256
 257     if (getenv("PADSP_NO_DSP"))
 258         return 0;
 259
 260     return 1;
 261 }
 262
 263 static int sndstat_cloak_enable(void) {
 264     if (padsp_disabled() & 2)
 265         return 0;
 266
 267     if (getenv("PADSP_NO_SNDSTAT"))
 268         return 0;
 269
 270     return 1;
 271 }
 272
 273 static int mixer_cloak_enable(void) {
 274     if (padsp_disabled() & 4)
 275         return 0;
 276
 277     if (getenv("PADSP_NO_MIXER"))
 278         return 0;
 279
 280     return 1;
 281 }
 282 static pthread_key_t recursion_key;
 283
 284 static void recursion_key_alloc(void) {
 285     pthread_key_create(&recursion_key, NULL);
 286 }
 287
 288 static int function_enter(void) {
 289     /* Avoid recursive calls */
 290     static pthread_once_t recursion_key_once = PTHREAD_ONCE_INIT;
 291     pthread_once(&recursion_key_once, recursion_key_alloc);
 292
 293     if (pthread_getspecific(recursion_key))
 294         return 0;
 295
 296     pthread_setspecific(recursion_key, (void*) 1);
 297     return 1;
 298 }
 299
 300 static void function_exit(void) {
 301     pthread_setspecific(recursion_key, NULL);
 302 }
 303
 304 static void fd_info_free(fd_info *i) {
 305     assert(i);
 306
 307     debug(DEBUG_LEVEL_NORMAL, __FILE__": freeing fd info (fd=%i)\n", i->app_fd);
 308
 309     dsp_drain(i);
 310
 311     if (i->mainloop)
 312         pa_threaded_mainloop_stop(i->mainloop);
 313
 314     if (i->play_stream) {
 315         pa_stream_disconnect(i->play_stream);
 316         pa_stream_unref(i->play_stream);
 317     }
 318
 319     if (i->rec_stream) {
 320         pa_stream_disconnect(i->rec_stream);
 321         pa_stream_unref(i->rec_stream);
 322     }
 323
 324     if (i->context) {
 325         pa_context_disconnect(i->context);
 326         pa_context_unref(i->context);
 327     }
 328
 329     if (i->mainloop)
 330         pa_threaded_mainloop_free(i->mainloop);
 331
 332     if (i->app_fd >= 0) {
 333         LOAD_CLOSE_FUNC();
 334         _close(i->app_fd);
 335     }
 336
 337     if (i->thread_fd >= 0) {
 338         LOAD_CLOSE_FUNC();
 339         _close(i->thread_fd);
 340     }
 341
 342     free(i->buf);
 343
 344     pthread_mutex_destroy(&i->mutex);
 345     free(i);
 346 }
 347
 348 static fd_info *fd_info_ref(fd_info *i) {
 349     assert(i);
 350
 351     pthread_mutex_lock(&i->mutex);
 352     assert(i->ref >= 1);
 353     i->ref++;
 354
 355     debug(DEBUG_LEVEL_VERBOSE, __FILE__": ref++, now %i\n", i->ref);
 356     pthread_mutex_unlock(&i->mutex);
 357
 358     return i;
 359 }
 360
 361 static void fd_info_unref(fd_info *i) {
 362     int r;
 363     pthread_mutex_lock(&i->mutex);
 364     assert(i->ref >= 1);
 365     r = --i->ref;
 366         debug(DEBUG_LEVEL_VERBOSE, __FILE__": ref--, now %i\n", i->ref);
 367     pthread_mutex_unlock(&i->mutex);
 368
 369     if (r <= 0)
 370         fd_info_free(i);
 371 }
 372
 373 static void context_state_cb(pa_context *c, void *userdata) {
 374     fd_info *i = userdata;
 375     assert(c);
 376
 377     switch (pa_context_get_state(c)) {
 378         case PA_CONTEXT_READY:
 379         case PA_CONTEXT_TERMINATED:
 380         case PA_CONTEXT_FAILED:
 381             pa_threaded_mainloop_signal(i->mainloop, 0);
 382             break;
 383
 384         case PA_CONTEXT_UNCONNECTED:
 385         case PA_CONTEXT_CONNECTING:
 386         case PA_CONTEXT_AUTHORIZING:
 387         case PA_CONTEXT_SETTING_NAME:
 388             break;
 389     }
 390 }
 391
 392 static void reset_params(fd_info *i) {
 393     assert(i);
 394
 395     i->sample_spec.format = PA_SAMPLE_U8;
 396     i->sample_spec.channels = 1;
 397     i->sample_spec.rate = 8000;
 398     i->fragment_size = 0;
 399     i->n_fragments = 0;
 400 }
 401
 402 static const char *client_name(char *buf, size_t n) {
 403     char p[PATH_MAX];
 404     const char *e;
 405
 406     if ((e = getenv("PADSP_CLIENT_NAME")))
 407         return e;
 408
 409     if (pa_get_binary_name(p, sizeof(p)))
 410         snprintf(buf, n, "OSS Emulation[%s]", pa_path_get_filename(p));
 411     else
 412         snprintf(buf, n, "OSS");
 413
 414     return buf;
 415 }
 416
 417 static const char *stream_name(void) {
 418     const char *e;
 419
 420     if ((e = getenv("PADSP_STREAM_NAME")))
 421         return e;
 422
 423     return "Audio Stream";
 424 }
 425
 426 static void atfork_prepare(void) {
 427     fd_info *i;
 428
 429     debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_prepare() enter\n");
 430
 431     function_enter();
 432
 433     pthread_mutex_lock(&fd_infos_mutex);
 434
 435     for (i = fd_infos; i; i = i->next) {
 436         pthread_mutex_lock(&i->mutex);
 437         pa_threaded_mainloop_lock(i->mainloop);
 438     }
 439
 440     pthread_mutex_lock(&func_mutex);
 441
 442
 443     debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_prepare() exit\n");
 444 }
 445
 446 static void atfork_parent(void) {
 447     fd_info *i;
 448
 449     debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_parent() enter\n");
 450
 451     pthread_mutex_unlock(&func_mutex);
 452
 453     for (i = fd_infos; i; i = i->next) {
 454         pa_threaded_mainloop_unlock(i->mainloop);
 455         pthread_mutex_unlock(&i->mutex);
 456     }
 457
 458     pthread_mutex_unlock(&fd_infos_mutex);
 459
 460     function_exit();
 461
 462     debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_parent() exit\n");
 463 }
 464
 465 static void atfork_child(void) {
 466     fd_info *i;
 467
 468     debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_child() enter\n");
 469
 470     /* We do only the bare minimum to get all fds closed */
 471     pthread_mutex_init(&func_mutex, NULL);
 472     pthread_mutex_init(&fd_infos_mutex, NULL);
 473
 474     for (i = fd_infos; i; i = i->next) {
 475         pthread_mutex_init(&i->mutex, NULL);
 476
 477         if (i->context) {
 478             pa_context_disconnect(i->context);
 479             pa_context_unref(i->context);
 480             i->context = NULL;
 481         }
 482
 483         if (i->play_stream) {
 484             pa_stream_unref(i->play_stream);
 485             i->play_stream = NULL;
 486         }
 487
 488         if (i->rec_stream) {
 489             pa_stream_unref(i->rec_stream);
 490             i->rec_stream = NULL;
 491         }
 492
 493         if (i->app_fd >= 0) {
 494             close(i->app_fd);
 495             i->app_fd = -1;
 496         }
 497
 498         if (i->thread_fd >= 0) {
 499             close(i->thread_fd);
 500             i->thread_fd = -1;
 501         }
 502
 503         i->unusable = 1;
 504     }
 505
 506     function_exit();
 507
 508     debug(DEBUG_LEVEL_NORMAL, __FILE__": atfork_child() exit\n");
 509 }
 510
 511 static void install_atfork(void) {
 512     pthread_atfork(atfork_prepare, atfork_parent, atfork_child);
 513 }
 514
 515 static void stream_success_cb(pa_stream *s, int success, void *userdata) {
 516     fd_info *i = userdata;
 517
 518     assert(s);
 519     assert(i);
 520
 521     i->operation_success = success;
 522     pa_threaded_mainloop_signal(i->mainloop, 0);
 523 }
 524
 525 static void context_success_cb(pa_context *c, int success, void *userdata) {
 526     fd_info *i = userdata;
 527
 528     assert(c);
 529     assert(i);
 530
 531     i->operation_success = success;
 532     pa_threaded_mainloop_signal(i->mainloop, 0);
 533 }
 534
 535 static fd_info* fd_info_new(fd_info_type_t type, int *_errno) {
 536     fd_info *i;
 537     int sfds[2] = { -1, -1 };
 538     char name[64];
 539     static pthread_once_t install_atfork_once = PTHREAD_ONCE_INIT;
 540
 541     debug(DEBUG_LEVEL_NORMAL, __FILE__": fd_info_new()\n");
 542
 543     signal(SIGPIPE, SIG_IGN); /* Yes, ugly as hell */
 544
 545     pthread_once(&install_atfork_once, install_atfork);
 546
 547     if (!(i = malloc(sizeof(fd_info)))) {
 548         *_errno = ENOMEM;
 549         goto fail;
 550     }
 551
 552     i->app_fd = i->thread_fd = -1;
 553     i->type = type;
 554
 555     i->mainloop = NULL;
 556     i->context = NULL;
 557     i->play_stream = NULL;
 558     i->rec_stream = NULL;
 559     i->io_event = NULL;
 560     pthread_mutex_init(&i->mutex, NULL);
 561     i->ref = 1;
 562     i->buf = NULL;
 563     i->rec_offset = 0;
 564     i->unusable = 0;
 565     pa_cvolume_reset(&i->sink_volume, 2);
 566     pa_cvolume_reset(&i->source_volume, 2);
 567     i->volume_modify_count = 0;
 568     i->sink_index = (uint32_t) -1;
 569     i->source_index = (uint32_t) -1;
 570     PA_LLIST_INIT(fd_info, i);
 571
 572     reset_params(i);
 573
 574     if (socketpair(AF_UNIX, SOCK_STREAM, 0, sfds) < 0) {
 575         *_errno = errno;
 576         debug(DEBUG_LEVEL_NORMAL, __FILE__": socket() failed: %s\n", strerror(errno));
 577         goto fail;
 578     }
 579
 580     i->app_fd = sfds[0];
 581     i->thread_fd = sfds[1];
 582
 583     if (!(i->mainloop = pa_threaded_mainloop_new())) {
 584         *_errno = EIO;
 585         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_threaded_mainloop_new() failed\n");
 586         goto fail;
 587     }
 588
 589     if (!(i->context = pa_context_new(pa_threaded_mainloop_get_api(i->mainloop), client_name(name, sizeof(name))))) {
 590         *_errno = EIO;
 591         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_context_new() failed\n");
 592         goto fail;
 593     }
 594
 595     pa_context_set_state_callback(i->context, context_state_cb, i);
 596
 597     if (pa_context_connect(i->context, NULL, 0, NULL) < 0) {
 598         *_errno = ECONNREFUSED;
 599         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_context_connect() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 600         goto fail;
 601     }
 602
 603     pa_threaded_mainloop_lock(i->mainloop);
 604
 605     if (pa_threaded_mainloop_start(i->mainloop) < 0) {
 606         *_errno = EIO;
 607         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_threaded_mainloop_start() failed\n");
 608         goto unlock_and_fail;
 609     }
 610
 611     /* Wait until the context is ready */
 612     pa_threaded_mainloop_wait(i->mainloop);
 613
 614     if (pa_context_get_state(i->context) != PA_CONTEXT_READY) {
 615         *_errno = ECONNREFUSED;
 616         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_context_connect() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 617         goto unlock_and_fail;
 618     }
 619
 620     pa_threaded_mainloop_unlock(i->mainloop);
 621     return i;
 622
 623 unlock_and_fail:
 624
 625     pa_threaded_mainloop_unlock(i->mainloop);
 626
 627 fail:
 628
 629     if (i)
 630         fd_info_unref(i);
 631
 632     return NULL;
 633 }
 634
 635 static void fd_info_add_to_list(fd_info *i) {
 636     assert(i);
 637
 638     pthread_mutex_lock(&fd_infos_mutex);
 639     PA_LLIST_PREPEND(fd_info, fd_infos, i);
 640     pthread_mutex_unlock(&fd_infos_mutex);
 641
 642     fd_info_ref(i);
 643 }
 644
 645 static void fd_info_remove_from_list(fd_info *i) {
 646     assert(i);
 647
 648     pthread_mutex_lock(&fd_infos_mutex);
 649     PA_LLIST_REMOVE(fd_info, fd_infos, i);
 650     pthread_mutex_unlock(&fd_infos_mutex);
 651
 652     fd_info_unref(i);
 653 }
 654
 655 static fd_info* fd_info_find(int fd) {
 656     fd_info *i;
 657
 658     pthread_mutex_lock(&fd_infos_mutex);
 659
 660     for (i = fd_infos; i; i = i->next)
 661         if (i->app_fd == fd && !i->unusable) {
 662             fd_info_ref(i);
 663             break;
 664         }
 665
 666     pthread_mutex_unlock(&fd_infos_mutex);
 667
 668     return i;
 669 }
 670
 671 static void fix_metrics(fd_info *i) {
 672     size_t fs;
 673     char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 674
 675     fs = pa_frame_size(&i->sample_spec);
 676     i->fragment_size = (i->fragment_size/fs)*fs;
 677
 678     /* Number of fragments set? */
 679     if (i->n_fragments < 2) {
 680         if (i->fragment_size > 0) {
 681             i->n_fragments = pa_bytes_per_second(&i->sample_spec) / 2 / i->fragment_size;
 682             if (i->n_fragments < 2)
 683                 i->n_fragments = 2;
 684         } else
 685             i->n_fragments = 12;
 686     }
 687
 688     /* Fragment size set? */
 689     if (i->fragment_size <= 0) {
 690         i->fragment_size = pa_bytes_per_second(&i->sample_spec) / 2 / i->n_fragments;
 691         if (i->fragment_size < 1024)
 692             i->fragment_size = 1024;
 693     }
 694
 695     debug(DEBUG_LEVEL_NORMAL, __FILE__": sample spec: %s\n", pa_sample_spec_snprint(t, sizeof(t), &i->sample_spec));
 696     debug(DEBUG_LEVEL_NORMAL, __FILE__": fixated metrics to %i fragments, %li bytes each.\n", i->n_fragments, (long)i->fragment_size);
 697 }
 698
 699 static void stream_request_cb(pa_stream *s, size_t length, void *userdata) {
 700     fd_info *i = userdata;
 701     assert(s);
 702
 703     if (i->io_event) {
 704         pa_mainloop_api *api;
 705         pa_io_event_flags_t flags;
 706         size_t n;
 707
 708         api = pa_threaded_mainloop_get_api(i->mainloop);
 709
 710         flags = 0;
 711
 712         if (s == i->play_stream) {
 713             n = pa_stream_writable_size(i->play_stream);
 714             if (n == (size_t)-1) {
 715                 debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_writable_size(): %s\n",
 716                     pa_strerror(pa_context_errno(i->context)));
 717             }
 718
 719             if (n >= i->fragment_size)
 720                 flags |= PA_IO_EVENT_INPUT;
 721         }
 722
 723         if (s == i->rec_stream) {
 724             n = pa_stream_readable_size(i->rec_stream);
 725             if (n == (size_t)-1) {
 726                 debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_readable_size(): %s\n",
 727                     pa_strerror(pa_context_errno(i->context)));
 728             }
 729
 730             if (n >= i->fragment_size)
 731                 flags |= PA_IO_EVENT_OUTPUT;
 732         }
 733
 734         api->io_enable(i->io_event, flags);
 735     }
 736 }
 737
 738 static void stream_latency_update_cb(pa_stream *s, void *userdata) {
 739     fd_info *i = userdata;
 740     assert(s);
 741
 742     pa_threaded_mainloop_signal(i->mainloop, 0);
 743 }
 744
 745 static void fd_info_shutdown(fd_info *i) {
 746     assert(i);
 747
 748     if (i->io_event) {
 749         pa_mainloop_api *api;
 750         api = pa_threaded_mainloop_get_api(i->mainloop);
 751         api->io_free(i->io_event);
 752         i->io_event = NULL;
 753     }
 754
 755     if (i->thread_fd >= 0) {
 756         close(i->thread_fd);
 757         i->thread_fd = -1;
 758     }
 759 }
 760
 761 static int fd_info_copy_data(fd_info *i, int force) {
 762     size_t n;
 763     pa_io_event_flags_t flags;
 764
 765     if (!i->play_stream && !i->rec_stream)
 766         return -1;
 767
 768     flags = 0;
 769
 770     if ((i->play_stream) && (pa_stream_get_state(i->play_stream) == PA_STREAM_READY)) {
 771         n = pa_stream_writable_size(i->play_stream);
 772
 773         if (n == (size_t)-1) {
 774             debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_writable_size(): %s\n",
 775                 pa_strerror(pa_context_errno(i->context)));
 776             return -1;
 777         }
 778
 779         while (n >= i->fragment_size || force) {
 780             ssize_t r;
 781
 782             if (!i->buf) {
 783                 if (!(i->buf = malloc(i->fragment_size))) {
 784                     debug(DEBUG_LEVEL_NORMAL, __FILE__": malloc() failed.\n");
 785                     return -1;
 786                 }
 787             }
 788
 789             if ((r = read(i->thread_fd, i->buf, i->fragment_size)) <= 0) {
 790
 791                 if (errno == EAGAIN)
 792                     break;
 793
 794                 debug(DEBUG_LEVEL_NORMAL, __FILE__": read(): %s\n", r == 0 ? "EOF" : strerror(errno));
 795                 return -1;
 796             }
 797
 798             if (pa_stream_write(i->play_stream, i->buf, r, free, 0, PA_SEEK_RELATIVE) < 0) {
 799                 debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_write(): %s\n", pa_strerror(pa_context_errno(i->context)));
 800                 return -1;
 801             }
 802
 803             i->buf = NULL;
 804
 805             assert(n >= (size_t) r);
 806             n -= r;
 807         }
 808
 809         if (n >= i->fragment_size)
 810             flags |= PA_IO_EVENT_INPUT;
 811     }
 812
 813     if ((i->rec_stream) && (pa_stream_get_state(i->rec_stream) == PA_STREAM_READY)) {
 814         n = pa_stream_readable_size(i->rec_stream);
 815
 816         if (n == (size_t)-1) {
 817             debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_readable_size(): %s\n",
 818                 pa_strerror(pa_context_errno(i->context)));
 819             return -1;
 820         }
 821
 822         while (n >= i->fragment_size || force) {
 823             ssize_t r;
 824             const void *data;
 825             const char *buf;
 826             size_t len;
 827
 828             if (pa_stream_peek(i->rec_stream, &data, &len) < 0) {
 829                 debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_peek(): %s\n", pa_strerror(pa_context_errno(i->context)));
 830                 return -1;
 831             }
 832
 833             if (!data)
 834                 break;
 835
 836             buf = (const char*)data + i->rec_offset;
 837
 838             if ((r = write(i->thread_fd, buf, len - i->rec_offset)) <= 0) {
 839
 840                 if (errno == EAGAIN)
 841                     break;
 842
 843                 debug(DEBUG_LEVEL_NORMAL, __FILE__": write(): %s\n", strerror(errno));
 844                 return -1;
 845             }
 846
 847             assert((size_t)r <= len - i->rec_offset);
 848             i->rec_offset += r;
 849
 850             if (i->rec_offset == len) {
 851                 if (pa_stream_drop(i->rec_stream) < 0) {
 852                     debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drop(): %s\n", pa_strerror(pa_context_errno(i->context)));
 853                     return -1;
 854                 }
 855                 i->rec_offset = 0;
 856             }
 857
 858             assert(n >= (size_t) r);
 859             n -= r;
 860         }
 861
 862         if (n >= i->fragment_size)
 863             flags |= PA_IO_EVENT_OUTPUT;
 864     }
 865
 866     if (i->io_event) {
 867         pa_mainloop_api *api;
 868
 869         api = pa_threaded_mainloop_get_api(i->mainloop);
 870         api->io_enable(i->io_event, flags);
 871     }
 872
 873     return 0;
 874 }
 875
 876 static void stream_state_cb(pa_stream *s, void * userdata) {
 877     fd_info *i = userdata;
 878     assert(s);
 879
 880     switch (pa_stream_get_state(s)) {
 881
 882         case PA_STREAM_READY:
 883             debug(DEBUG_LEVEL_NORMAL, __FILE__": stream established.\n");
 884             break;
 885
 886         case PA_STREAM_FAILED:
 887             debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 888             fd_info_shutdown(i);
 889             break;
 890
 891         case PA_STREAM_TERMINATED:
 892         case PA_STREAM_UNCONNECTED:
 893         case PA_STREAM_CREATING:
 894             break;
 895     }
 896 }
 897
 898 static int create_playback_stream(fd_info *i) {
 899     pa_buffer_attr attr;
 900     int n;
 901
 902     assert(i);
 903
 904     fix_metrics(i);
 905
 906     if (!(i->play_stream = pa_stream_new(i->context, stream_name(), &i->sample_spec, NULL))) {
 907         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 908         goto fail;
 909     }
 910
 911     pa_stream_set_state_callback(i->play_stream, stream_state_cb, i);
 912     pa_stream_set_write_callback(i->play_stream, stream_request_cb, i);
 913     pa_stream_set_latency_update_callback(i->play_stream, stream_latency_update_cb, i);
 914
 915     memset(&attr, 0, sizeof(attr));
 916     attr.maxlength = i->fragment_size * (i->n_fragments+1);
 917     attr.tlength = i->fragment_size * i->n_fragments;
 918     attr.prebuf = i->fragment_size;
 919     attr.minreq = i->fragment_size;
 920
 921     if (pa_stream_connect_playback(i->play_stream, NULL, &attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL) < 0) {
 922         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 923         goto fail;
 924     }
 925
 926     n = i->fragment_size;
 927     setsockopt(i->app_fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n));
 928     n = i->fragment_size;
 929     setsockopt(i->thread_fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n));
 930
 931     return 0;
 932
 933 fail:
 934     return -1;
 935 }
 936
 937 static int create_record_stream(fd_info *i) {
 938     pa_buffer_attr attr;
 939     int n;
 940
 941     assert(i);
 942
 943     fix_metrics(i);
 944
 945     if (!(i->rec_stream = pa_stream_new(i->context, stream_name(), &i->sample_spec, NULL))) {
 946         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 947         goto fail;
 948     }
 949
 950     pa_stream_set_state_callback(i->rec_stream, stream_state_cb, i);
 951     pa_stream_set_read_callback(i->rec_stream, stream_request_cb, i);
 952     pa_stream_set_latency_update_callback(i->rec_stream, stream_latency_update_cb, i);
 953
 954     memset(&attr, 0, sizeof(attr));
 955     attr.maxlength = i->fragment_size * (i->n_fragments+1);
 956     attr.fragsize = i->fragment_size;
 957
 958     if (pa_stream_connect_record(i->rec_stream, NULL, &attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE) < 0) {
 959         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(i->context)));
 960         goto fail;
 961     }
 962
 963     n = i->fragment_size;
 964     setsockopt(i->app_fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n));
 965     n = i->fragment_size;
 966     setsockopt(i->thread_fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n));
 967
 968     return 0;
 969
 970 fail:
 971     return -1;
 972 }
 973
 974 static void free_streams(fd_info *i) {
 975     assert(i);
 976
 977     if (i->play_stream) {
 978         pa_stream_disconnect(i->play_stream);
 979         pa_stream_unref(i->play_stream);
 980         i->play_stream = NULL;
 981     }
 982
 983     if (i->rec_stream) {
 984         pa_stream_disconnect(i->rec_stream);
 985         pa_stream_unref(i->rec_stream);
 986         i->rec_stream = NULL;
 987     }
 988 }
 989
 990 static void io_event_cb(pa_mainloop_api *api, pa_io_event *e, int fd, pa_io_event_flags_t flags, void *userdata) {
 991     fd_info *i = userdata;
 992
 993     pa_threaded_mainloop_signal(i->mainloop, 0);
 994
 995     if (flags & PA_IO_EVENT_INPUT) {
 996
 997         if (!i->play_stream) {
 998             if (create_playback_stream(i) < 0)
 999                 goto fail;
1000         } else {
1001             if (fd_info_copy_data(i, 0) < 0)
1002                 goto fail;
1003         }
1004
1005     } else if (flags & PA_IO_EVENT_OUTPUT) {
1006
1007         if (!i->rec_stream) {
1008             if (create_record_stream(i) < 0)
1009                 goto fail;
1010         } else {
1011             if (fd_info_copy_data(i, 0) < 0)
1012                 goto fail;
1013         }
1014
1015     } else if (flags & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR))
1016         goto fail;
1017
1018     return;
1019
1020 fail:
1021     /* We can't do anything better than removing the event source */
1022     fd_info_shutdown(i);
1023 }
1024
1025 static int dsp_open(int flags, int *_errno) {
1026     fd_info *i;
1027     pa_mainloop_api *api;
1028     int ret;
1029     int f;
1030     pa_io_event_flags_t ioflags;
1031
1032     debug(DEBUG_LEVEL_NORMAL, __FILE__": dsp_open()\n");
1033
1034     if (!(i = fd_info_new(FD_INFO_STREAM, _errno)))
1035         return -1;
1036
1037     if ((flags & O_NONBLOCK) == O_NONBLOCK) {
1038         if ((f = fcntl(i->app_fd, F_GETFL)) >= 0)
1039             fcntl(i->app_fd, F_SETFL, f|O_NONBLOCK);
1040     }
1041     if ((f = fcntl(i->thread_fd, F_GETFL)) >= 0)
1042         fcntl(i->thread_fd, F_SETFL, f|O_NONBLOCK);
1043
1044     fcntl(i->app_fd, F_SETFD, FD_CLOEXEC);
1045     fcntl(i->thread_fd, F_SETFD, FD_CLOEXEC);
1046
1047     pa_threaded_mainloop_lock(i->mainloop);
1048     api = pa_threaded_mainloop_get_api(i->mainloop);
1049
1050     switch (flags & O_ACCMODE) {
1051     case O_RDONLY:
1052         ioflags = PA_IO_EVENT_OUTPUT;
1053         shutdown(i->thread_fd, SHUT_RD);
1054         shutdown(i->app_fd, SHUT_WR);
1055         break;
1056     case O_WRONLY:
1057         ioflags = PA_IO_EVENT_INPUT;
1058         shutdown(i->thread_fd, SHUT_WR);
1059         shutdown(i->app_fd, SHUT_RD);
1060         break;
1061     case O_RDWR:
1062         ioflags = PA_IO_EVENT_INPUT | PA_IO_EVENT_OUTPUT;
1063         break;
1064     default:
1065         return -1;
1066     }
1067
1068     if (!(i->io_event = api->io_new(api, i->thread_fd, ioflags, io_event_cb, i)))
1069         goto fail;
1070
1071     pa_threaded_mainloop_unlock(i->mainloop);
1072
1073     debug(DEBUG_LEVEL_NORMAL, __FILE__": dsp_open() succeeded, fd=%i\n", i->app_fd);
1074
1075     fd_info_add_to_list(i);
1076     ret = i->app_fd;
1077     fd_info_unref(i);
1078
1079     return ret;
1080
1081 fail:
1082     pa_threaded_mainloop_unlock(i->mainloop);
1083
1084     if (i)
1085         fd_info_unref(i);
1086
1087     *_errno = EIO;
1088
1089     debug(DEBUG_LEVEL_NORMAL, __FILE__": dsp_open() failed\n");
1090
1091     return -1;
1092 }
1093
1094 static void sink_info_cb(pa_context *context, const pa_sink_info *si, int eol, void *userdata) {
1095     fd_info *i = userdata;
1096
1097     if (!si && eol < 0) {
1098         i->operation_success = 0;
1099         pa_threaded_mainloop_signal(i->mainloop, 0);
1100         return;
1101     }
1102
1103     if (eol)
1104         return;
1105
1106     if (!pa_cvolume_equal(&i->sink_volume, &si->volume))
1107         i->volume_modify_count++;
1108
1109     i->sink_volume = si->volume;
1110     i->sink_index = si->index;
1111
1112     i->operation_success = 1;
1113     pa_threaded_mainloop_signal(i->mainloop, 0);
1114 }
1115
1116 static void source_info_cb(pa_context *context, const pa_source_info *si, int eol, void *userdata) {
1117     fd_info *i = userdata;
1118
1119     if (!si && eol < 0) {
1120         i->operation_success = 0;
1121         pa_threaded_mainloop_signal(i->mainloop, 0);
1122         return;
1123     }
1124
1125     if (eol)
1126         return;
1127
1128     if (!pa_cvolume_equal(&i->source_volume, &si->volume))
1129         i->volume_modify_count++;
1130
1131     i->source_volume = si->volume;
1132     i->source_index = si->index;
1133
1134     i->operation_success = 1;
1135     pa_threaded_mainloop_signal(i->mainloop, 0);
1136 }
1137
1138 static void subscribe_cb(pa_context *context, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
1139     fd_info *i = userdata;
1140     pa_operation *o = NULL;
1141
1142     if (i->sink_index != idx)
1143         return;
1144
1145     if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) != PA_SUBSCRIPTION_EVENT_CHANGE)
1146         return;
1147
1148     if (!(o = pa_context_get_sink_info_by_index(i->context, i->sink_index, sink_info_cb, i))) {
1149         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get sink info: %s", pa_strerror(pa_context_errno(i->context)));
1150         return;
1151     }
1152
1153     pa_operation_unref(o);
1154 }
1155
1156 static int mixer_open(int flags, int *_errno) {
1157     fd_info *i;
1158     pa_operation *o = NULL;
1159     int ret;
1160
1161     debug(DEBUG_LEVEL_NORMAL, __FILE__": mixer_open()\n");
1162
1163     if (!(i = fd_info_new(FD_INFO_MIXER, _errno)))
1164         return -1;
1165
1166     pa_threaded_mainloop_lock(i->mainloop);
1167
1168     pa_context_set_subscribe_callback(i->context, subscribe_cb, i);
1169
1170     if (!(o = pa_context_subscribe(i->context, PA_SUBSCRIPTION_MASK_SINK | PA_SUBSCRIPTION_MASK_SOURCE, context_success_cb, i))) {
1171         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to subscribe to events: %s", pa_strerror(pa_context_errno(i->context)));
1172         *_errno = EIO;
1173         goto fail;
1174     }
1175
1176     i->operation_success = 0;
1177     while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
1178         pa_threaded_mainloop_wait(i->mainloop);
1179         CONTEXT_CHECK_DEAD_GOTO(i, fail);
1180     }
1181
1182     pa_operation_unref(o);
1183     o = NULL;
1184
1185     if (!i->operation_success) {
1186         debug(DEBUG_LEVEL_NORMAL, __FILE__":Failed to subscribe to events: %s", pa_strerror(pa_context_errno(i->context)));
1187         *_errno = EIO;
1188         goto fail;
1189     }
1190
1191     /* Get sink info */
1192
1193     if (!(o = pa_context_get_sink_info_by_name(i->context, NULL, sink_info_cb, i))) {
1194         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get sink info: %s", pa_strerror(pa_context_errno(i->context)));
1195         *_errno = EIO;
1196         goto fail;
1197     }
1198
1199     i->operation_success = 0;
1200     while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
1201         pa_threaded_mainloop_wait(i->mainloop);
1202         CONTEXT_CHECK_DEAD_GOTO(i, fail);
1203     }
1204
1205     pa_operation_unref(o);
1206     o = NULL;
1207
1208     if (!i->operation_success) {
1209         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get sink info: %s", pa_strerror(pa_context_errno(i->context)));
1210         *_errno = EIO;
1211         goto fail;
1212     }
1213
1214     /* Get source info */
1215
1216     if (!(o = pa_context_get_source_info_by_name(i->context, NULL, source_info_cb, i))) {
1217         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get source info: %s", pa_strerror(pa_context_errno(i->context)));
1218         *_errno = EIO;
1219         goto fail;
1220     }
1221
1222     i->operation_success = 0;
1223     while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
1224         pa_threaded_mainloop_wait(i->mainloop);
1225         CONTEXT_CHECK_DEAD_GOTO(i, fail);
1226     }
1227
1228     pa_operation_unref(o);
1229     o = NULL;
1230
1231     if (!i->operation_success) {
1232         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to get source info: %s", pa_strerror(pa_context_errno(i->context)));
1233         *_errno = EIO;
1234         goto fail;
1235     }
1236
1237     pa_threaded_mainloop_unlock(i->mainloop);
1238
1239     debug(DEBUG_LEVEL_NORMAL, __FILE__": mixer_open() succeeded, fd=%i\n", i->app_fd);
1240
1241     fd_info_add_to_list(i);
1242     ret = i->app_fd;
1243     fd_info_unref(i);
1244
1245     return ret;
1246
1247 fail:
1248     if (o)
1249         pa_operation_unref(o);
1250
1251     pa_threaded_mainloop_unlock(i->mainloop);
1252
1253     if (i)
1254         fd_info_unref(i);
1255
1256     *_errno = EIO;
1257
1258     debug(DEBUG_LEVEL_NORMAL, __FILE__": mixer_open() failed\n");
1259
1260     return -1;
1261 }
1262
1263 static int sndstat_open(int flags, int *_errno) {
1264     static const char sndstat[] =
1265         "Sound Driver:3.8.1a-980706 (PulseAudio Virtual OSS)\n"
1266         "Kernel: POSIX\n"
1267         "Config options: 0\n"
1268         "\n"
1269         "Installed drivers:\n"
1270         "Type 255: PulseAudio Virtual OSS\n"
1271         "\n"
1272         "Card config:\n"
1273         "PulseAudio Virtual OSS\n"
1274         "\n"
1275         "Audio devices:\n"
1276         "0: PulseAudio Virtual OSS\n"
1277         "\n"
1278         "Synth devices: NOT ENABLED IN CONFIG\n"
1279         "\n"
1280         "Midi devices:\n"
1281         "\n"
1282         "Timers:\n"
1283         "\n"
1284         "Mixers:\n"
1285         "0: PulseAudio Virtual OSS\n";
1286
1287     char fn[] = "/tmp/padsp-sndstat-XXXXXX";
1288     mode_t u;
1289     int fd = -1;
1290     int e;
1291
1292     debug(DEBUG_LEVEL_NORMAL, __FILE__": sndstat_open()\n");
1293
1294     if (flags != O_RDONLY && flags != (O_RDONLY|O_LARGEFILE)) {
1295         *_errno = EACCES;
1296         debug(DEBUG_LEVEL_NORMAL, __FILE__": bad access!\n");
1297         goto fail;
1298     }
1299
1300     u = umask(0077);
1301     fd = mkstemp(fn);
1302     e = errno;
1303     umask(u);
1304
1305     if (fd < 0) {
1306         *_errno = e;
1307         debug(DEBUG_LEVEL_NORMAL, __FILE__": mkstemp() failed: %s\n", strerror(errno));
1308         goto fail;
1309     }
1310
1311     unlink(fn);
1312
1313     if (write(fd, sndstat, sizeof(sndstat) -1) != sizeof(sndstat)-1) {
1314         *_errno = errno;
1315         debug(DEBUG_LEVEL_NORMAL, __FILE__": write() failed: %s\n", strerror(errno));
1316         goto fail;
1317     }
1318
1319     if (lseek(fd, SEEK_SET, 0) < 0) {
1320         *_errno = errno;
1321         debug(DEBUG_LEVEL_NORMAL, __FILE__": lseek() failed: %s\n", strerror(errno));
1322         goto fail;
1323     }
1324
1325     return fd;
1326
1327 fail:
1328     if (fd >= 0)
1329         close(fd);
1330     return -1;
1331 }
1332
1333 int open(const char *filename, int flags, ...) {
1334     va_list args;
1335     mode_t mode = 0;
1336     int r, _errno = 0;
1337
1338     debug(DEBUG_LEVEL_VERBOSE, __FILE__": open(%s)\n", filename);
1339
1340     va_start(args, flags);
1341     if (flags & O_CREAT)
1342         mode = va_arg(args, mode_t);
1343     va_end(args);
1344
1345     if (!function_enter()) {
1346         LOAD_OPEN_FUNC();
1347         return _open(filename, flags, mode);
1348     }
1349
1350     if (dsp_cloak_enable() && (strcmp(filename, "/dev/dsp") == 0 || strcmp(filename, "/dev/adsp") == 0)) {
1351         r = dsp_open(flags, &_errno);
1352     } else if (mixer_cloak_enable() && strcmp(filename, "/dev/mixer") == 0) {
1353         r = mixer_open(flags, &_errno);
1354     } else if (sndstat_cloak_enable() && strcmp(filename, "/dev/sndstat") == 0) {
1355         r = sndstat_open(flags, &_errno);
1356     } else {
1357         function_exit();
1358         LOAD_OPEN_FUNC();
1359         return _open(filename, flags, mode);
1360     }
1361
1362     function_exit();
1363
1364     if (_errno)
1365         errno = _errno;
1366
1367     return r;
1368 }
1369
1370 static int mixer_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno) {
1371     int ret = -1;
1372
1373     switch (request) {
1374         case SOUND_MIXER_READ_DEVMASK :
1375             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_DEVMASK\n");
1376
1377             *(int*) argp = SOUND_MASK_PCM | SOUND_MASK_IGAIN;
1378             break;
1379
1380         case SOUND_MIXER_READ_RECMASK :
1381             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_RECMASK\n");
1382
1383             *(int*) argp = SOUND_MASK_IGAIN;
1384             break;
1385
1386         case SOUND_MIXER_READ_STEREODEVS:
1387             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_STEREODEVS\n");
1388
1389             pa_threaded_mainloop_lock(i->mainloop);
1390             *(int*) argp = 0;
1391             if (i->sink_volume.channels > 1)
1392                 *(int*) argp |= SOUND_MASK_PCM;
1393             if (i->source_volume.channels > 1)
1394                 *(int*) argp |= SOUND_MASK_IGAIN;
1395             pa_threaded_mainloop_unlock(i->mainloop);
1396
1397             break;
1398
1399         case SOUND_MIXER_READ_RECSRC:
1400             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_RECSRC\n");
1401
1402             *(int*) argp = SOUND_MASK_IGAIN;
1403             break;
1404
1405         case SOUND_MIXER_WRITE_RECSRC:
1406             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_WRITE_RECSRC\n");
1407             break;
1408
1409         case SOUND_MIXER_READ_CAPS:
1410             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_CAPS\n");
1411
1412             *(int*) argp = 0;
1413             break;
1414
1415         case SOUND_MIXER_READ_PCM:
1416         case SOUND_MIXER_READ_IGAIN: {
1417             pa_cvolume *v;
1418
1419             if (request == SOUND_MIXER_READ_PCM)
1420                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_PCM\n");
1421             else
1422                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_READ_IGAIN\n");
1423
1424             pa_threaded_mainloop_lock(i->mainloop);
1425
1426             if (request == SOUND_MIXER_READ_PCM)
1427                 v = &i->sink_volume;
1428             else
1429                 v = &i->source_volume;
1430
1431             *(int*) argp =
1432                 ((v->values[0]*100/PA_VOLUME_NORM)) |
1433                 ((v->values[v->channels > 1 ? 1 : 0]*100/PA_VOLUME_NORM)  << 8);
1434
1435             pa_threaded_mainloop_unlock(i->mainloop);
1436
1437             break;
1438         }
1439
1440         case SOUND_MIXER_WRITE_PCM:
1441         case SOUND_MIXER_WRITE_IGAIN: {
1442             pa_cvolume v, *pv;
1443
1444             if (request == SOUND_MIXER_READ_PCM)
1445                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_WRITE_PCM\n");
1446             else
1447                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_WRITE_IGAIN\n");
1448
1449             pa_threaded_mainloop_lock(i->mainloop);
1450
1451             if (request == SOUND_MIXER_READ_PCM) {
1452                 v = i->sink_volume;
1453                 pv = &i->sink_volume;
1454             } else {
1455                 v = i->source_volume;
1456                 pv = &i->source_volume;
1457             }
1458
1459             pv->values[0] = ((*(int*) argp & 0xFF)*PA_VOLUME_NORM)/100;
1460             pv->values[1] = ((*(int*) argp >> 8)*PA_VOLUME_NORM)/100;
1461
1462             if (!pa_cvolume_equal(pv, &v)) {
1463                 pa_operation *o;
1464
1465                 if (request == SOUND_MIXER_READ_PCM)
1466                     o = pa_context_set_sink_volume_by_index(i->context, i->sink_index, pv, NULL, NULL);
1467                 else
1468                     o = pa_context_set_source_volume_by_index(i->context, i->source_index, pv, NULL, NULL);
1469
1470                 if (!o)
1471                     debug(DEBUG_LEVEL_NORMAL, __FILE__":Failed set volume: %s", pa_strerror(pa_context_errno(i->context)));
1472                 else {
1473
1474                     i->operation_success = 0;
1475                     while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
1476                         CONTEXT_CHECK_DEAD_GOTO(i, exit_loop);
1477
1478                         pa_threaded_mainloop_wait(i->mainloop);
1479                     }
1480                 exit_loop:
1481
1482                     if (!i->operation_success)
1483                         debug(DEBUG_LEVEL_NORMAL, __FILE__": Failed to set volume: %s\n", pa_strerror(pa_context_errno(i->context)));
1484
1485                     pa_operation_unref(o);
1486                 }
1487
1488                 /* We don't wait for completion here */
1489                 i->volume_modify_count++;
1490             }
1491
1492             pa_threaded_mainloop_unlock(i->mainloop);
1493
1494             break;
1495         }
1496
1497         case SOUND_MIXER_INFO: {
1498             mixer_info *mi = argp;
1499
1500             debug(DEBUG_LEVEL_NORMAL, __FILE__": SOUND_MIXER_INFO\n");
1501
1502             memset(mi, 0, sizeof(mixer_info));
1503             strncpy(mi->id, "PULSEAUDIO", sizeof(mi->id));
1504             strncpy(mi->name, "PulseAudio Virtual OSS", sizeof(mi->name));
1505             pa_threaded_mainloop_lock(i->mainloop);
1506             mi->modify_counter = i->volume_modify_count;
1507             pa_threaded_mainloop_unlock(i->mainloop);
1508             break;
1509         }
1510
1511         default:
1512             debug(DEBUG_LEVEL_NORMAL, __FILE__": unknown ioctl 0x%08lx\n", request);
1513
1514             *_errno = EINVAL;
1515             goto fail;
1516     }
1517
1518     ret = 0;
1519
1520 fail:
1521
1522     return ret;
1523 }
1524
1525 static int map_format(int *fmt, pa_sample_spec *ss) {
1526
1527     switch (*fmt) {
1528         case AFMT_MU_LAW:
1529             ss->format = PA_SAMPLE_ULAW;
1530             break;
1531
1532         case AFMT_A_LAW:
1533             ss->format = PA_SAMPLE_ALAW;
1534             break;
1535
1536         case AFMT_S8:
1537             *fmt = AFMT_U8;
1538             /* fall through */
1539         case AFMT_U8:
1540             ss->format = PA_SAMPLE_U8;
1541             break;
1542
1543         case AFMT_U16_BE:
1544             *fmt = AFMT_S16_BE;
1545             /* fall through */
1546         case AFMT_S16_BE:
1547             ss->format = PA_SAMPLE_S16BE;
1548             break;
1549
1550         case AFMT_U16_LE:
1551             *fmt = AFMT_S16_LE;
1552             /* fall through */
1553         case AFMT_S16_LE:
1554             ss->format = PA_SAMPLE_S16LE;
1555             break;
1556
1557         default:
1558             ss->format = PA_SAMPLE_S16NE;
1559             *fmt = AFMT_S16_NE;
1560             break;
1561     }
1562
1563     return 0;
1564 }
1565
1566 static int map_format_back(pa_sample_format_t format) {
1567     switch (format) {
1568         case PA_SAMPLE_S16LE: return AFMT_S16_LE;
1569         case PA_SAMPLE_S16BE: return AFMT_S16_BE;
1570         case PA_SAMPLE_ULAW: return AFMT_MU_LAW;
1571         case PA_SAMPLE_ALAW: return AFMT_A_LAW;
1572         case PA_SAMPLE_U8: return AFMT_U8;
1573         default:
1574             abort();
1575     }
1576 }
1577
1578 static int dsp_flush_fd(int fd) {
1579     int l;
1580
1581     if (ioctl(fd, SIOCINQ, &l) < 0) {
1582         debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ: %s\n", strerror(errno));
1583         return -1;
1584     }
1585
1586     while (l > 0) {
1587         char buf[1024];
1588         size_t k;
1589
1590         k = (size_t) l > sizeof(buf) ? sizeof(buf) : (size_t) l;
1591         if (read(fd, buf, k) < 0)
1592             debug(DEBUG_LEVEL_NORMAL, __FILE__": read(): %s\n", strerror(errno));
1593         l -= k;
1594     }
1595
1596     return 0;
1597 }
1598
1599 static int dsp_flush_socket(fd_info *i) {
1600     int res = 0;
1601
1602     if ((i->thread_fd < 0) && (i->app_fd < 0))
1603         return -1;
1604
1605     if (i->thread_fd >= 0)
1606         res = dsp_flush_fd(i->thread_fd);
1607
1608     if (res < 0)
1609         return res;
1610
1611     if (i->app_fd >= 0)
1612         res = dsp_flush_fd(i->app_fd);
1613
1614     if (res < 0)
1615         return res;
1616
1617     return 0;
1618 }
1619
1620 static int dsp_empty_socket(fd_info *i) {
1621     int ret = -1;
1622
1623     /* Empty the socket */
1624     for (;;) {
1625         int l;
1626
1627         if (i->thread_fd < 0)
1628             break;
1629
1630         if (ioctl(i->thread_fd, SIOCINQ, &l) < 0) {
1631             debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ: %s\n", strerror(errno));
1632             break;
1633         }
1634
1635         if (!l) {
1636             ret = 0;
1637             break;
1638         }
1639
1640         pa_threaded_mainloop_wait(i->mainloop);
1641     }
1642
1643     return ret;
1644 }
1645
1646 static int dsp_drain(fd_info *i) {
1647     pa_operation *o = NULL;
1648     int r = -1;
1649
1650     if (!i->mainloop)
1651         return 0;
1652
1653     debug(DEBUG_LEVEL_NORMAL, __FILE__": Draining.\n");
1654
1655     pa_threaded_mainloop_lock(i->mainloop);
1656
1657     if (dsp_empty_socket(i) < 0)
1658         goto fail;
1659
1660     if (!i->play_stream)
1661         goto fail;
1662
1663     debug(DEBUG_LEVEL_NORMAL, __FILE__": Really draining.\n");
1664
1665     if (!(o = pa_stream_drain(i->play_stream, stream_success_cb, i))) {
1666         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(i->context)));
1667         goto fail;
1668     }
1669
1670     i->operation_success = 0;
1671     while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
1672         PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, fail);
1673
1674         pa_threaded_mainloop_wait(i->mainloop);
1675     }
1676
1677     if (!i->operation_success) {
1678         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_drain() 2: %s\n", pa_strerror(pa_context_errno(i->context)));
1679         goto fail;
1680     }
1681
1682     r = 0;
1683
1684 fail:
1685
1686     if (o)
1687         pa_operation_unref(o);
1688
1689     pa_threaded_mainloop_unlock(i->mainloop);
1690
1691     return 0;
1692 }
1693
1694 static int dsp_trigger(fd_info *i) {
1695     pa_operation *o = NULL;
1696     int r = -1;
1697
1698     if (!i->play_stream)
1699         return 0;
1700
1701     pa_threaded_mainloop_lock(i->mainloop);
1702
1703     if (dsp_empty_socket(i) < 0)
1704         goto fail;
1705
1706     debug(DEBUG_LEVEL_NORMAL, __FILE__": Triggering.\n");
1707
1708     if (!(o = pa_stream_trigger(i->play_stream, stream_success_cb, i))) {
1709         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_trigger(): %s\n", pa_strerror(pa_context_errno(i->context)));
1710         goto fail;
1711     }
1712
1713     i->operation_success = 0;
1714     while (!pa_operation_get_state(o) != PA_OPERATION_DONE) {
1715         PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, fail);
1716
1717         pa_threaded_mainloop_wait(i->mainloop);
1718     }
1719
1720     if (!i->operation_success) {
1721         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_trigger(): %s\n", pa_strerror(pa_context_errno(i->context)));
1722         goto fail;
1723     }
1724
1725     r = 0;
1726
1727 fail:
1728
1729     if (o)
1730         pa_operation_unref(o);
1731
1732     pa_threaded_mainloop_unlock(i->mainloop);
1733
1734     return 0;
1735 }
1736
1737 static int dsp_ioctl(fd_info *i, unsigned long request, void*argp, int *_errno) {
1738     int ret = -1;
1739
1740     switch (request) {
1741         case SNDCTL_DSP_SETFMT: {
1742             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SETFMT: %i\n", *(int*) argp);
1743
1744             pa_threaded_mainloop_lock(i->mainloop);
1745
1746             if (*(int*) argp == AFMT_QUERY)
1747                 *(int*) argp = map_format_back(i->sample_spec.format);
1748             else {
1749                 map_format((int*) argp, &i->sample_spec);
1750                 free_streams(i);
1751             }
1752
1753             pa_threaded_mainloop_unlock(i->mainloop);
1754             break;
1755         }
1756
1757         case SNDCTL_DSP_SPEED: {
1758             pa_sample_spec ss;
1759             int valid;
1760             char t[256];
1761
1762             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SPEED: %i\n", *(int*) argp);
1763
1764             pa_threaded_mainloop_lock(i->mainloop);
1765
1766             ss = i->sample_spec;
1767             ss.rate = *(int*) argp;
1768
1769             if ((valid = pa_sample_spec_valid(&ss))) {
1770                 i->sample_spec = ss;
1771                 free_streams(i);
1772             }
1773
1774             debug(DEBUG_LEVEL_NORMAL, __FILE__": ss: %s\n", pa_sample_spec_snprint(t, sizeof(t), &i->sample_spec));
1775
1776             pa_threaded_mainloop_unlock(i->mainloop);
1777
1778             if (!valid) {
1779                 *_errno = EINVAL;
1780                 goto fail;
1781             }
1782
1783             break;
1784         }
1785
1786         case SNDCTL_DSP_STEREO:
1787             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_STEREO: %i\n", *(int*) argp);
1788
1789             pa_threaded_mainloop_lock(i->mainloop);
1790
1791             i->sample_spec.channels = *(int*) argp ? 2 : 1;
1792             free_streams(i);
1793
1794             pa_threaded_mainloop_unlock(i->mainloop);
1795             return 0;
1796
1797         case SNDCTL_DSP_CHANNELS: {
1798             pa_sample_spec ss;
1799             int valid;
1800
1801             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_CHANNELS: %i\n", *(int*) argp);
1802
1803             pa_threaded_mainloop_lock(i->mainloop);
1804
1805             ss = i->sample_spec;
1806             ss.channels = *(int*) argp;
1807
1808             if ((valid = pa_sample_spec_valid(&ss))) {
1809                 i->sample_spec = ss;
1810                 free_streams(i);
1811             }
1812
1813             pa_threaded_mainloop_unlock(i->mainloop);
1814
1815             if (!valid) {
1816                 *_errno = EINVAL;
1817                 goto fail;
1818             }
1819
1820             break;
1821         }
1822
1823         case SNDCTL_DSP_GETBLKSIZE:
1824             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETBLKSIZE\n");
1825
1826             pa_threaded_mainloop_lock(i->mainloop);
1827
1828             fix_metrics(i);
1829             *(int*) argp = i->fragment_size;
1830
1831             pa_threaded_mainloop_unlock(i->mainloop);
1832
1833             break;
1834
1835         case SNDCTL_DSP_SETFRAGMENT:
1836             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SETFRAGMENT: 0x%8x\n", *(int*) argp);
1837
1838             pa_threaded_mainloop_lock(i->mainloop);
1839
1840             i->fragment_size = 1 << (*(int*) argp);
1841             i->n_fragments = (*(int*) argp) >> 16;
1842
1843             /* 0x7FFF means that we can set whatever we like */
1844             if (i->n_fragments == 0x7FFF)
1845                 i->n_fragments = 12;
1846
1847             free_streams(i);
1848
1849             pa_threaded_mainloop_unlock(i->mainloop);
1850
1851             break;
1852
1853         case SNDCTL_DSP_GETCAPS:
1854             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_CAPS\n");
1855
1856             *(int*)  argp = DSP_CAP_DUPLEX | DSP_CAP_MULTI;
1857             break;
1858
1859         case SNDCTL_DSP_GETODELAY: {
1860             int l;
1861
1862             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETODELAY\n");
1863
1864             pa_threaded_mainloop_lock(i->mainloop);
1865
1866             *(int*) argp = 0;
1867
1868             for (;;) {
1869                 pa_usec_t usec;
1870
1871                 PLAYBACK_STREAM_CHECK_DEAD_GOTO(i, exit_loop);
1872
1873                 if (pa_stream_get_latency(i->play_stream, &usec, NULL) >= 0) {
1874                     *(int*) argp = pa_usec_to_bytes(usec, &i->sample_spec);
1875                     break;
1876                 }
1877
1878                 if (pa_context_errno(i->context) != PA_ERR_NODATA) {
1879                     debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_get_latency(): %s\n", pa_strerror(pa_context_errno(i->context)));
1880                     break;
1881                 }
1882
1883                 pa_threaded_mainloop_wait(i->mainloop);
1884             }
1885
1886         exit_loop:
1887
1888             if (ioctl(i->thread_fd, SIOCINQ, &l) < 0)
1889                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ failed: %s\n", strerror(errno));
1890             else
1891                 *(int*) argp += l;
1892
1893             pa_threaded_mainloop_unlock(i->mainloop);
1894
1895             debug(DEBUG_LEVEL_NORMAL, __FILE__": ODELAY: %i\n", *(int*) argp);
1896
1897             break;
1898         }
1899
1900         case SNDCTL_DSP_RESET: {
1901             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_RESET\n");
1902
1903             pa_threaded_mainloop_lock(i->mainloop);
1904
1905             free_streams(i);
1906             dsp_flush_socket(i);
1907             reset_params(i);
1908
1909             pa_threaded_mainloop_unlock(i->mainloop);
1910             break;
1911         }
1912
1913         case SNDCTL_DSP_GETFMTS: {
1914             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETFMTS\n");
1915
1916             *(int*) argp = AFMT_MU_LAW|AFMT_A_LAW|AFMT_U8|AFMT_S16_LE|AFMT_S16_BE;
1917             break;
1918         }
1919
1920         case SNDCTL_DSP_POST:
1921             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_POST\n");
1922
1923             if (dsp_trigger(i) < 0)
1924                 *_errno = EIO;
1925             break;
1926
1927         case SNDCTL_DSP_SYNC:
1928             debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_SYNC\n");
1929
1930             if (dsp_drain(i) < 0)
1931                 *_errno = EIO;
1932
1933             break;
1934
1935         case SNDCTL_DSP_GETOSPACE:
1936         case SNDCTL_DSP_GETISPACE: {
1937             audio_buf_info *bi = (audio_buf_info*) argp;
1938             int l;
1939             size_t k = 0;
1940
1941             if (request == SNDCTL_DSP_GETOSPACE)
1942                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETOSPACE\n");
1943             else
1944                 debug(DEBUG_LEVEL_NORMAL, __FILE__": SNDCTL_DSP_GETISPACE\n");
1945
1946             pa_threaded_mainloop_lock(i->mainloop);
1947
1948             fix_metrics(i);
1949
1950             if (request == SNDCTL_DSP_GETOSPACE) {
1951                 if (i->play_stream) {
1952                     if ((k = pa_stream_writable_size(i->play_stream)) == (size_t) -1)
1953                         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_writable_size(): %s\n", pa_strerror(pa_context_errno(i->context)));
1954                 } else
1955                     k = i->fragment_size * i->n_fragments;
1956
1957                 if (ioctl(i->thread_fd, SIOCINQ, &l) < 0) {
1958                     debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ failed: %s\n", strerror(errno));
1959                     l = 0;
1960                 }
1961
1962                 bi->bytes = k > (size_t) l ? k - l : 0;
1963             } else {
1964                 if (i->rec_stream) {
1965                     if ((k = pa_stream_readable_size(i->rec_stream)) == (size_t) -1)
1966                         debug(DEBUG_LEVEL_NORMAL, __FILE__": pa_stream_readable_size(): %s\n", pa_strerror(pa_context_errno(i->context)));
1967                 } else
1968                     k = 0;
1969
1970                 if (ioctl(i->app_fd, SIOCINQ, &l) < 0) {
1971                     debug(DEBUG_LEVEL_NORMAL, __FILE__": SIOCINQ failed: %s\n", strerror(errno));
1972                     l = 0;
1973                 }
1974
1975                 bi->bytes = k + l;
1976             }
1977
1978             bi->fragsize = i->fragment_size;
1979             bi->fragstotal = i->n_fragments;
1980             bi->fragments = bi->bytes / bi->fragsize;
1981
1982             pa_threaded_mainloop_unlock(i->mainloop);
1983
1984             debug(DEBUG_LEVEL_NORMAL, __FILE__": fragsize=%i, fragstotal=%i, bytes=%i, fragments=%i\n", bi->fragsize, bi->fragstotal, bi->bytes, bi->fragments);
1985
1986             break;
1987         }
1988
1989         default:
1990             debug(DEBUG_LEVEL_NORMAL, __FILE__": unknown ioctl 0x%08lx\n", request);
1991
1992             *_errno = EINVAL;
1993             goto fail;
1994     }
1995
1996     ret = 0;
1997
1998 fail:
1999
2000     return ret;
2001 }
2002
2003 int ioctl(int fd, unsigned long request, ...) {
2004     fd_info *i;
2005     va_list args;
2006     void *argp;
2007     int r, _errno = 0;
2008
2009     debug(DEBUG_LEVEL_VERBOSE, __FILE__": ioctl()\n");
2010
2011     va_start(args, request);
2012     argp = va_arg(args, void *);
2013     va_end(args);
2014
2015     if (!function_enter()) {
2016         LOAD_IOCTL_FUNC();
2017         return _ioctl(fd, request, argp);
2018     }
2019
2020     if (!(i = fd_info_find(fd))) {
2021         function_exit();
2022         LOAD_IOCTL_FUNC();
2023         return _ioctl(fd, request, argp);
2024     }
2025
2026     if (i->type == FD_INFO_MIXER)
2027         r = mixer_ioctl(i, request, argp, &_errno);
2028     else
2029         r = dsp_ioctl(i, request, argp, &_errno);
2030
2031     fd_info_unref(i);
2032
2033     if (_errno)
2034         errno = _errno;
2035
2036     function_exit();
2037
2038     return r;
2039 }
2040
2041 int close(int fd) {
2042     fd_info *i;
2043
2044     debug(DEBUG_LEVEL_VERBOSE, __FILE__": close()\n");
2045
2046     if (!function_enter()) {
2047         LOAD_CLOSE_FUNC();
2048         return _close(fd);
2049     }
2050
2051     if (!(i = fd_info_find(fd))) {
2052         function_exit();
2053         LOAD_CLOSE_FUNC();
2054         return _close(fd);
2055     }
2056
2057     fd_info_remove_from_list(i);
2058     fd_info_unref(i);
2059
2060     function_exit();
2061
2062     return 0;
2063 }
2064
2065 int access(const char *pathname, int mode) {
2066     debug(DEBUG_LEVEL_VERBOSE, __FILE__": access(%s)\n", pathname);
2067
2068     if (strcmp(pathname, "/dev/dsp") != 0 &&
2069         strcmp(pathname, "/dev/adsp") != 0 &&
2070         strcmp(pathname, "/dev/sndstat") != 0 &&
2071         strcmp(pathname, "/dev/mixer") != 0) {
2072         LOAD_ACCESS_FUNC();
2073         return _access(pathname, mode);
2074     }
2075
2076     if (mode & (W_OK | X_OK)) {
2077         debug(DEBUG_LEVEL_NORMAL, __FILE__": access(%s, %x) = EACCESS\n", pathname, mode);
2078         errno = EACCES;
2079         return -1;
2080     }
2081
2082     debug(DEBUG_LEVEL_NORMAL, __FILE__": access(%s, %x) = OK\n", pathname, mode);
2083
2084     return 0;
2085 }
2086
2087 int open64(const char *filename, int flags, ...) {
2088     va_list args;
2089     mode_t mode = 0;
2090
2091     debug(DEBUG_LEVEL_VERBOSE, __FILE__": open64(%s)\n", filename);
2092
2093     va_start(args, flags);
2094     if (flags & O_CREAT)
2095         mode = va_arg(args, mode_t);
2096     va_end(args);
2097
2098     if (strcmp(filename, "/dev/dsp") != 0 &&
2099         strcmp(filename, "/dev/adsp") != 0 &&
2100         strcmp(filename, "/dev/sndstat") != 0 &&
2101         strcmp(filename, "/dev/mixer") != 0) {
2102         LOAD_OPEN64_FUNC();
2103         return _open64(filename, flags, mode);
2104     }
2105
2106     return open(filename, flags, mode);
2107 }
2108
2109 FILE* fopen(const char *filename, const char *mode) {
2110     FILE *f = NULL;
2111     int fd;
2112     mode_t m;
2113
2114     debug(DEBUG_LEVEL_VERBOSE, __FILE__": fopen(%s)\n", filename);
2115
2116     if (strcmp(filename, "/dev/dsp") != 0 &&
2117         strcmp(filename, "/dev/adsp") != 0 &&
2118         strcmp(filename, "/dev/sndstat") != 0 &&
2119         strcmp(filename, "/dev/mixer") != 0) {
2120         LOAD_FOPEN_FUNC();
2121         return _fopen(filename, mode);
2122     }
2123
2124     switch (mode[0]) {
2125     case 'r':
2126         m = O_RDONLY;
2127         break;
2128     case 'w':
2129     case 'a':
2130         m = O_WRONLY;
2131         break;
2132     default:
2133         errno = EINVAL;
2134         return NULL;
2135     }
2136
2137     if ((((mode[1] == 'b') || (mode[1] == 't')) && (mode[2] == '+')) || (mode[1] == '+'))
2138         m = O_RDWR;
2139
2140     if ((fd = open(filename, m)) < 0)
2141         return NULL;
2142
2143     if (!(f = fdopen(fd, mode))) {
2144         close(fd);
2145         return NULL;
2146     }
2147
2148     return f;
2149 }
2150
2151 FILE *fopen64(const char *filename, const char *mode) {
2152
2153     debug(DEBUG_LEVEL_VERBOSE, __FILE__": fopen64(%s)\n", filename);
2154
2155     if (strcmp(filename, "/dev/dsp") != 0 &&
2156         strcmp(filename, "/dev/adsp") != 0 &&
2157         strcmp(filename, "/dev/sndstat") != 0 &&
2158         strcmp(filename, "/dev/mixer") != 0) {
2159         LOAD_FOPEN64_FUNC();
2160         return _fopen64(filename, mode);
2161     }
2162
2163     return fopen(filename, mode);
2164 }
2165
2166 int fclose(FILE *f) {
2167     fd_info *i;
2168
2169     debug(DEBUG_LEVEL_VERBOSE, __FILE__": fclose()\n");
2170
2171     if (!function_enter()) {
2172         LOAD_FCLOSE_FUNC();
2173         return _fclose(f);
2174     }
2175
2176     if (!(i = fd_info_find(fileno(f)))) {
2177         function_exit();
2178         LOAD_FCLOSE_FUNC();
2179         return _fclose(f);
2180     }
2181
2182     fd_info_remove_from_list(i);
2183
2184     /* Dirty trick to avoid that the fd is not freed twice, once by us
2185      * and once by the real fclose() */
2186     i->app_fd = -1;
2187
2188     fd_info_unref(i);
2189
2190     function_exit();
2191
2192     LOAD_FCLOSE_FUNC();
2193     return _fclose(f);
2194 }