summaryrefslogtreecommitdiff
path: root/src/daemon/daemon-conf.c
blob: c98c0218ec9e7eec33e706bc44905726a17290ec (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
/* $Id$ */

/***
  This file is part of PulseAudio.

  Copyright 2004-2006 Lennart Poettering
  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB

  PulseAudio is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as published
  by the Free Software Foundation; either version 2 of the License,
  or (at your option) any later version.

  PulseAudio is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with PulseAudio; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sched.h>

#include <pulse/xmalloc.h>

#include <pulsecore/core-error.h>
#include <pulsecore/core-util.h>
#include <pulsecore/strbuf.h>
#include <pulsecore/conf-parser.h>
#include <pulsecore/resampler.h>
#include <pulsecore/macro.h>

#include "daemon-conf.h"

#define DEFAULT_SCRIPT_FILE PA_DEFAULT_CONFIG_DIR PA_PATH_SEP "default.pa"
#define DEFAULT_SCRIPT_FILE_USER PA_PATH_SEP "default.pa"
#define DEFAULT_CONFIG_FILE PA_DEFAULT_CONFIG_DIR PA_PATH_SEP "daemon.conf"
#define DEFAULT_CONFIG_FILE_USER PA_PATH_SEP "daemon.conf"

#define ENV_SCRIPT_FILE "PULSE_SCRIPT"
#define ENV_CONFIG_FILE "PULSE_CONFIG"
#define ENV_DL_SEARCH_PATH "PULSE_DLPATH"

static const pa_daemon_conf default_conf = {
    .cmd = PA_CMD_DAEMON,
    .daemonize = FALSE,
    .fail = TRUE,
    .high_priority = TRUE,
    .nice_level = -11,
    .realtime_scheduling = FALSE,
    .realtime_priority = 5,  /* Half of JACK's default rtprio */
    .disallow_module_loading = FALSE,
    .exit_idle_time = -1,
    .module_idle_time = 20,
    .scache_idle_time = 20,
    .auto_log_target = 1,
    .script_commands = NULL,
    .dl_search_path = NULL,
    .default_script_file = NULL,
    .log_target = PA_LOG_SYSLOG,
    .log_level = PA_LOG_NOTICE,
    .resample_method = PA_RESAMPLER_AUTO,
    .disable_remixing = FALSE,
    .config_file = NULL,
    .use_pid_file = TRUE,
    .system_instance = FALSE,
    .no_cpu_limit = FALSE,
    .disable_shm = FALSE,
    .default_n_fragments = 4,
    .default_fragment_size_msec = 25,
    .default_sample_spec = { .format = PA_SAMPLE_S16NE, .rate = 44100, .channels = 2 }
#ifdef HAVE_SYS_RESOURCE_H
    , .rlimit_as = { .value = 0, .is_set = FALSE },
    .rlimit_core = { .value = 0, .is_set = FALSE },
    .rlimit_data = { .value = 0, .is_set = FALSE },
    .rlimit_fsize = { .value = 0, .is_set = FALSE },
    .rlimit_nofile = { .value = 256, .is_set = TRUE },
    .rlimit_stack = { .value = 0, .is_set = FALSE }
#ifdef RLIMIT_NPROC
    , .rlimit_nproc = { .value = 0, .is_set = FALSE }
#endif
#ifdef RLIMIT_MEMLOCK
    , .rlimit_memlock = { .value = 0, .is_set = FALSE }
#endif
#ifdef RLIMIT_NICE
    , .rlimit_nice = { .value = 31, .is_set = TRUE }     /* nice level of -11 */
#endif
#ifdef RLIMIT_RTPRIO
    , .rlimit_rtprio = { .value = 9, .is_set = TRUE }      /* One below JACK's default for the server */
#endif
#endif
};

pa_daemon_conf* pa_daemon_conf_new(void) {
    FILE *f;
    pa_daemon_conf *c = pa_xnewdup(pa_daemon_conf, &default_conf, 1);

    if ((f = pa_open_config_file(DEFAULT_SCRIPT_FILE, DEFAULT_SCRIPT_FILE_USER, ENV_SCRIPT_FILE, &c->default_script_file, "r")))
        fclose(f);

    c->dl_search_path = pa_xstrdup(PA_DLSEARCHPATH);
    return c;
}

void pa_daemon_conf_free(pa_daemon_conf *c) {
    pa_assert(c);
    pa_xfree(c->script_commands);
    pa_xfree(c->dl_search_path);
    pa_xfree(c->default_script_file);
    pa_xfree(c->config_file);
    pa_xfree(c);
}

int pa_daemon_conf_set_log_target(pa_daemon_conf *c, const char *string) {
    pa_assert(c);
    pa_assert(string);

    if (!strcmp(string, "auto"))
        c->auto_log_target = 1;
    else if (!strcmp(string, "syslog")) {
        c->auto_log_target = 0;
        c->log_target = PA_LOG_SYSLOG;
    } else if (!strcmp(string, "stderr")) {
        c->auto_log_target = 0;
        c->log_target = PA_LOG_STDERR;
    } else
        return -1;

    return 0;
}

int pa_daemon_conf_set_log_level(pa_daemon_conf *c, const char *string) {
    uint32_t u;
    pa_assert(c);
    pa_assert(string);

    if (pa_atou(string, &u) >= 0) {
        if (u >= PA_LOG_LEVEL_MAX)
            return -1;

        c->log_level = (pa_log_level_t) u;
    } else if (pa_startswith(string, "debug"))
        c->log_level = PA_LOG_DEBUG;
    else if (pa_startswith(string, "info"))
        c->log_level = PA_LOG_INFO;
    else if (pa_startswith(string, "notice"))
        c->log_level = PA_LOG_NOTICE;
    else if (pa_startswith(string, "warn"))
        c->log_level = PA_LOG_WARN;
    else if (pa_startswith(string, "err"))
        c->log_level = PA_LOG_ERROR;
    else
        return -1;

    return 0;
}

int pa_daemon_conf_set_resample_method(pa_daemon_conf *c, const char *string) {
    int m;
    pa_assert(c);
    pa_assert(string);

    if ((m = pa_parse_resample_method(string)) < 0)
        return -1;

    c->resample_method = m;
    return 0;
}

static int parse_log_target(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_daemon_conf_set_log_target(c, rvalue) < 0) {
        pa_log("[%s:%u] Invalid log target '%s'.", filename, line, rvalue);
        return -1;
    }

    return 0;
}

static int parse_log_level(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_daemon_conf_set_log_level(c, rvalue) < 0) {
        pa_log("[%s:%u] Invalid log level '%s'.", filename, line, rvalue);
        return -1;
    }

    return 0;
}

static int parse_resample_method(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_daemon_conf_set_resample_method(c, rvalue) < 0) {
        pa_log("[%s:%u] Invalid resample method '%s'.", filename, line, rvalue);
        return -1;
    }

    return 0;
}

static int parse_rlimit(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
#ifdef HAVE_SYS_RESOURCE_H
    struct pa_rlimit *r = data;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(r);

    if (rvalue[strspn(rvalue, "\t ")] == 0) {
        /* Empty string */
        r->is_set = 0;
        r->value = 0;
    } else {
        int32_t k;
        if (pa_atoi(rvalue, &k) < 0) {
            pa_log("[%s:%u] Invalid rlimit '%s'.", filename, line, rvalue);
            return -1;
        }
        r->is_set = k >= 0;
        r->value = k >= 0 ? (rlim_t) k : 0;
    }
#else
    pa_log_warn("[%s:%u] rlimit not supported on this platform.", filename, line);
#endif

    return 0;
}

static int parse_sample_format(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    pa_sample_format_t f;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if ((f = pa_parse_sample_format(rvalue)) < 0) {
        pa_log("[%s:%u] Invalid sample format '%s'.", filename, line, rvalue);
        return -1;
    }

    c->default_sample_spec.format = f;
    return 0;
}

static int parse_sample_rate(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    int32_t r;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_atoi(rvalue, &r) < 0 || r > PA_RATE_MAX || r <= 0) {
        pa_log("[%s:%u] Invalid sample rate '%s'.", filename, line, rvalue);
        return -1;
    }

    c->default_sample_spec.rate = r;
    return 0;
}

static int parse_sample_channels(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    int32_t n;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_atoi(rvalue, &n) < 0 || n > PA_CHANNELS_MAX || n <= 0) {
        pa_log("[%s:%u] Invalid sample channels '%s'.", filename, line, rvalue);
        return -1;
    }

    c->default_sample_spec.channels = (uint8_t) n;
    return 0;
}

static int parse_fragments(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    int32_t n;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_atoi(rvalue, &n) < 0 || n < 2) {
        pa_log("[%s:%u] Invalid number of fragments '%s'.", filename, line, rvalue);
        return -1;
    }

    c->default_n_fragments = (unsigned) n;
    return 0;
}

static int parse_fragment_size_msec(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    int32_t n;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_atoi(rvalue, &n) < 0 || n < 1) {
        pa_log("[%s:%u] Invalid fragment size '%s'.", filename, line, rvalue);
        return -1;
    }

    c->default_fragment_size_msec = (unsigned) n;
    return 0;
}

static int parse_nice_level(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    int32_t level;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_atoi(rvalue, &level) < 0 || level < -20 || level > 19) {
        pa_log("[%s:%u] Invalid nice level '%s'.", filename, line, rvalue);
        return -1;
    }

    c->nice_level = (int) level;
    return 0;
}

static int parse_rtprio(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
    pa_daemon_conf *c = data;
    int32_t rtprio;

    pa_assert(filename);
    pa_assert(lvalue);
    pa_assert(rvalue);
    pa_assert(data);

    if (pa_atoi(rvalue, &rtprio) < 0 || rtprio < sched_get_priority_min(SCHED_FIFO) || rtprio > sched_get_priority_max(SCHED_FIFO)) {
        pa_log("[%s:%u] Invalid realtime priority '%s'.", filename, line, rvalue);
        return -1;
    }

    c->realtime_priority = (int) rtprio;
    return 0;
}

int pa_daemon_conf_load(pa_daemon_conf *c, const char *filename) {
    int r = -1;
    FILE *f = NULL;

    pa_config_item table[] = {
        { "daemonize",                  pa_config_parse_bool,     NULL },
        { "fail",                       pa_config_parse_bool,     NULL },
        { "high-priority",              pa_config_parse_bool,     NULL },
        { "realtime-scheduling",        pa_config_parse_bool,     NULL },
        { "disallow-module-loading",    pa_config_parse_bool,     NULL },
        { "use-pid-file",               pa_config_parse_bool,     NULL },
        { "system-instance",            pa_config_parse_bool,     NULL },
        { "no-cpu-limit",               pa_config_parse_bool,     NULL },
        { "disable-shm",                pa_config_parse_bool,     NULL },
        { "exit-idle-time",             pa_config_parse_int,      NULL },
        { "module-idle-time",           pa_config_parse_int,      NULL },
        { "scache-idle-time",           pa_config_parse_int,      NULL },
        { "realtime-priority",          parse_rtprio,             NULL },
        { "dl-search-path",             pa_config_parse_string,   NULL },
        { "default-script-file",        pa_config_parse_string,   NULL },
        { "log-target",                 parse_log_target,         NULL },
        { "log-level",                  parse_log_level,          NULL },
        { "verbose",                    parse_log_level,          NULL },
        { "resample-method",            parse_resample_method,    NULL },
        { "default-sample-format",      parse_sample_format,      NULL },
        { "default-sample-rate",        parse_sample_rate,        NULL },
        { "default-sample-channels",    parse_sample_channels,    NULL },
        { "default-fragments",          parse_fragments,          NULL },
        { "default-fragment-size-msec", parse_fragment_size_msec, NULL },
        { "nice-level",                 parse_nice_level,         NULL },
        { "disable-remixing",           pa_config_parse_bool,     NULL },
#ifdef HAVE_SYS_RESOURCE_H
        { "rlimit-as",                  parse_rlimit,             NULL },
        { "rlimit-core",                parse_rlimit,             NULL },
        { "rlimit-data",                parse_rlimit,             NULL },
        { "rlimit-fsize",               parse_rlimit,             NULL },
        { "rlimit-nofile",              parse_rlimit,             NULL },
        { "rlimit-stack",               parse_rlimit,             NULL },
#ifdef RLIMIT_NPROC
        { "rlimit-nproc",               parse_rlimit,             NULL },
#endif
#ifdef RLIMIT_MEMLOCK
        { "rlimit-memlock",             parse_rlimit,             NULL },
#endif
#ifdef RLIMIT_NICE
        { "rlimit-nice",                parse_rlimit,             NULL },
#endif
#ifdef RLIMIT_RTPRIO
        { "rlimit-rtprio",              parse_rlimit,             NULL },
#endif
#endif
        { NULL,                         NULL,                     NULL },
    };

    table[0].data = &c->daemonize;
    table[1].data = &c->fail;
    table[2].data = &c->high_priority;
    table[3].data = &c->realtime_scheduling;
    table[4].data = &c->disallow_module_loading;
    table[5].data = &c->use_pid_file;
    table[6].data = &c->system_instance;
    table[7].data = &c->no_cpu_limit;
    table[8].data = &c->disable_shm;
    table[9].data = &c->exit_idle_time;
    table[10].data = &c->module_idle_time;
    table[11].data = &c->scache_idle_time;
    table[12].data = c;
    table[13].data = &c->dl_search_path;
    table[14].data = &c->default_script_file;
    table[15].data = c;
    table[16].data = c;
    table[17].data = c;
    table[18].data = c;
    table[19].data = c;
    table[20].data = c;
    table[21].data = c;
    table[22].data = c;
    table[23].data = c;
    table[24].data = c;
    table[25].data = &c->disable_remixing;
#ifdef HAVE_SYS_RESOURCE_H
    table[26].data = &c->rlimit_as;
    table[27].data = &c->rlimit_core;
    table[28].data = &c->rlimit_data;
    table[29].data = &c->rlimit_fsize;
    table[30].data = &c->rlimit_nofile;
    table[31].data = &c->rlimit_stack;
#ifdef RLIMIT_NPROC
    table[32].data = &c->rlimit_nproc;
#endif
#ifdef RLIMIT_MEMLOCK
#ifndef RLIMIT_NPROC
#error "Houston, we have a numbering problem!"
#endif
    table[33].data = &c->rlimit_memlock;
#endif
#ifdef RLIMIT_NICE
#ifndef RLIMIT_MEMLOCK
#error "Houston, we have a numbering problem!"
#endif
    table[34].data = &c->rlimit_nice;
#endif
#ifdef RLIMIT_RTPRIO
#ifndef RLIMIT_NICE
#error "Houston, we have a numbering problem!"
#endif
    table[35].data = &c->rlimit_rtprio;
#endif
#endif

    pa_xfree(c->config_file);
    c->config_file = NULL;

    f = filename ?
        fopen(c->config_file = pa_xstrdup(filename), "r") :
        pa_open_config_file(DEFAULT_CONFIG_FILE, DEFAULT_CONFIG_FILE_USER, ENV_CONFIG_FILE, &c->config_file, "r");

    if (!f && errno != ENOENT) {
        pa_log_warn("Failed to open configuration file '%s': %s", c->config_file, pa_cstrerror(errno));
        goto finish;
    }

    r = f ? pa_config_parse(c->config_file, f, table, NULL) : 0;

finish:
    if (f)
        fclose(f);

    return r;
}

int pa_daemon_conf_env(pa_daemon_conf *c) {
    char *e;

    if ((e = getenv(ENV_DL_SEARCH_PATH))) {
        pa_xfree(c->dl_search_path);
        c->dl_search_path = pa_xstrdup(e);
    }
    if ((e = getenv(ENV_SCRIPT_FILE))) {
        pa_xfree(c->default_script_file);
        c->default_script_file = pa_xstrdup(e);
    }

    return 0;
}

static const char* const log_level_to_string[] = {
    [PA_LOG_DEBUG] = "debug",
    [PA_LOG_INFO] = "info",
    [PA_LOG_NOTICE] = "notice",
    [PA_LOG_WARN] = "warning",
    [PA_LOG_ERROR] = "error"
};

char *pa_daemon_conf_dump(pa_daemon_conf *c) {
    pa_strbuf *s;

    pa_assert(c);

    s = pa_strbuf_new();

    if (c->config_file)
        pa_strbuf_printf(s, "### Read from configuration file: %s ###\n", c->config_file);

    pa_assert(c->log_level <= PA_LOG_LEVEL_MAX);

    pa_strbuf_printf(s, "daemonize = %s\n", pa_yes_no(c->daemonize));
    pa_strbuf_printf(s, "fail = %s\n", pa_yes_no(c->fail));
    pa_strbuf_printf(s, "high-priority = %s\n", pa_yes_no(c->high_priority));
    pa_strbuf_printf(s, "nice-level = %i\n", c->nice_level);
    pa_strbuf_printf(s, "realtime-scheduling = %s\n", pa_yes_no(c->realtime_scheduling));
    pa_strbuf_printf(s, "realtime-priority = %i\n", c->realtime_priority);
    pa_strbuf_printf(s, "disallow-module-loading = %s\n", pa_yes_no(c->disallow_module_loading));
    pa_strbuf_printf(s, "use-pid-file = %s\n", pa_yes_no(c->use_pid_file));
    pa_strbuf_printf(s, "system-instance = %s\n", pa_yes_no(c->system_instance));
    pa_strbuf_printf(s, "no-cpu-limit = %s\n", pa_yes_no(c->no_cpu_limit));
    pa_strbuf_printf(s, "disable-shm = %s\n", pa_yes_no(c->disable_shm));
    pa_strbuf_printf(s, "exit-idle-time = %i\n", c->exit_idle_time);
    pa_strbuf_printf(s, "module-idle-time = %i\n", c->module_idle_time);
    pa_strbuf_printf(s, "scache-idle-time = %i\n", c->scache_idle_time);
    pa_strbuf_printf(s, "dl-search-path = %s\n", c->dl_search_path ? c->dl_search_path : "");
    pa_strbuf_printf(s, "default-script-file = %s\n", c->default_script_file);
    pa_strbuf_printf(s, "log-target = %s\n", c->auto_log_target ? "auto" : (c->log_target == PA_LOG_SYSLOG ? "syslog" : "stderr"));
    pa_strbuf_printf(s, "log-level = %s\n", log_level_to_string[c->log_level]);
    pa_strbuf_printf(s, "resample-method = %s\n", pa_resample_method_to_string(c->resample_method));
    pa_strbuf_printf(s, "disable-remixing = %s\n", pa_yes_no(c->disable_remixing));
    pa_strbuf_printf(s, "default-sample-format = %s\n", pa_sample_format_to_string(c->default_sample_spec.format));
    pa_strbuf_printf(s, "default-sample-rate = %u\n", c->default_sample_spec.rate);
    pa_strbuf_printf(s, "default-sample-channels = %u\n", c->default_sample_spec.channels);
    pa_strbuf_printf(s, "default-fragments = %u\n", c->default_n_fragments);
    pa_strbuf_printf(s, "default-fragment-size-msec = %u\n", c->default_fragment_size_msec);
#ifdef HAVE_SYS_RESOURCE_H
    pa_strbuf_printf(s, "rlimit-as = %li\n", c->rlimit_as.is_set ? (long int) c->rlimit_as.value : -1);
    pa_strbuf_printf(s, "rlimit-core = %li\n", c->rlimit_core.is_set ? (long int) c->rlimit_core.value : -1);
    pa_strbuf_printf(s, "rlimit-data = %li\n", c->rlimit_data.is_set ? (long int) c->rlimit_data.value : -1);
    pa_strbuf_printf(s, "rlimit-fsize = %li\n", c->rlimit_fsize.is_set ? (long int) c->rlimit_fsize.value : -1);
    pa_strbuf_printf(s, "rlimit-nofile = %li\n", c->rlimit_nofile.is_set ? (long int) c->rlimit_nofile.value : -1);
    pa_strbuf_printf(s, "rlimit-stack = %li\n", c->rlimit_stack.is_set ? (long int) c->rlimit_stack.value : -1);
#ifdef RLIMIT_NPROC
    pa_strbuf_printf(s, "rlimit-nproc = %li\n", c->rlimit_nproc.is_set ? (long int) c->rlimit_nproc.value : -1);
#endif
#ifdef RLIMIT_MEMLOCK
    pa_strbuf_printf(s, "rlimit-memlock = %li\n", c->rlimit_memlock.is_set ? (long int) c->rlimit_memlock.value : -1);
#endif
#ifdef RLIMIT_NICE
    pa_strbuf_printf(s, "rlimit-nice = %li\n", c->rlimit_memlock.is_set ? (long int) c->rlimit_nice.value : -1);
#endif
#ifdef RLIMIT_RTPRIO
    pa_strbuf_printf(s, "rlimit-rtprio = %li\n", c->rlimit_memlock.is_set ? (long int) c->rlimit_rtprio.value : -1);
#endif
#endif

    return pa_strbuf_tostring_free(s);
}