src/daemon/cmdline.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   8   PulseAudio is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU Lesser General Public License as published
  10   by the Free Software Foundation; either version 2 of the License,
  11   or (at your option) any later version.
  12
  13   PulseAudio is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with PulseAudio; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <getopt.h>
  32 #include <sys/stat.h>
  33
  34 #include <pulse/xmalloc.h>
  35
  36 #include <pulsecore/core-util.h>
  37 #include <pulsecore/strbuf.h>
  38 #include <pulsecore/macro.h>
  39
  40 #include "cmdline.h"
  41
  42 /* Argument codes for getopt_long() */
  43 enum {
  44     ARG_HELP = 256,
  45     ARG_VERSION,
  46     ARG_DUMP_CONF,
  47     ARG_DUMP_MODULES,
  48     ARG_DAEMONIZE,
  49     ARG_FAIL,
  50     ARG_LOG_LEVEL,
  51     ARG_HIGH_PRIORITY,
  52     ARG_REALTIME,
  53     ARG_DISALLOW_MODULE_LOADING,
  54     ARG_EXIT_IDLE_TIME,
  55     ARG_MODULE_IDLE_TIME,
  56     ARG_SCACHE_IDLE_TIME,
  57     ARG_LOG_TARGET,
  58     ARG_LOAD,
  59     ARG_FILE,
  60     ARG_DL_SEARCH_PATH,
  61     ARG_RESAMPLE_METHOD,
  62     ARG_KILL,
  63     ARG_USE_PID_FILE,
  64     ARG_CHECK,
  65     ARG_NO_CPU_LIMIT,
  66     ARG_DISABLE_SHM,
  67     ARG_DUMP_RESAMPLE_METHODS,
  68     ARG_SYSTEM,
  69     ARG_CLEANUP_SHM
  70 };
  71
  72 /* Tabel for getopt_long() */
  73 static struct option long_options[] = {
  74     {"help",                        0, 0, ARG_HELP},
  75     {"version",                     0, 0, ARG_VERSION},
  76     {"dump-conf",                   0, 0, ARG_DUMP_CONF},
  77     {"dump-modules",                0, 0, ARG_DUMP_MODULES},
  78     {"daemonize",                   2, 0, ARG_DAEMONIZE},
  79     {"fail",                        2, 0, ARG_FAIL},
  80     {"verbose",                     2, 0, ARG_LOG_LEVEL},
  81     {"log-level",                   2, 0, ARG_LOG_LEVEL},
  82     {"high-priority",               2, 0, ARG_HIGH_PRIORITY},
  83     {"realtime",                    2, 0, ARG_REALTIME},
  84     {"disallow-module-loading",     2, 0, ARG_DISALLOW_MODULE_LOADING},
  85     {"exit-idle-time",              2, 0, ARG_EXIT_IDLE_TIME},
  86     {"module-idle-time",            2, 0, ARG_MODULE_IDLE_TIME},
  87     {"scache-idle-time",            2, 0, ARG_SCACHE_IDLE_TIME},
  88     {"log-target",                  1, 0, ARG_LOG_TARGET},
  89     {"load",                        1, 0, ARG_LOAD},
  90     {"file",                        1, 0, ARG_FILE},
  91     {"dl-search-path",              1, 0, ARG_DL_SEARCH_PATH},
  92     {"resample-method",             1, 0, ARG_RESAMPLE_METHOD},
  93     {"kill",                        0, 0, ARG_KILL},
  94     {"use-pid-file",                2, 0, ARG_USE_PID_FILE},
  95     {"check",                       0, 0, ARG_CHECK},
  96     {"system",                      2, 0, ARG_SYSTEM},
  97     {"no-cpu-limit",                2, 0, ARG_NO_CPU_LIMIT},
  98     {"disable-shm",                 2, 0, ARG_DISABLE_SHM},
  99     {"dump-resample-methods",       2, 0, ARG_DUMP_RESAMPLE_METHODS},
 100     {"cleanup-shm",                 2, 0, ARG_CLEANUP_SHM},
 101     {NULL, 0, 0, 0}
 102 };
 103
 104 void pa_cmdline_help(const char *argv0) {
 105     const char *e;
 106
 107     pa_assert(argv0);
 108
 109     if ((e = strrchr(argv0, '/')))
 110         e++;
 111     else
 112         e = argv0;
 113
 114     printf("%s [options]\n\n"
 115            "COMMANDS:\n"
 116            "  -h, --help                            Show this help\n"
 117            "      --version                         Show version\n"
 118            "      --dump-conf                       Dump default configuration\n"
 119            "      --dump-modules                    Dump list of available modules\n"
 120            "      --dump-resample-methods           Dump available resample methods\n"
 121            "      --cleanup-shm                     Cleanup stale shared memory segments\n"
 122            "  -k  --kill                            Kill a running daemon\n"
 123            "      --check                           Check for a running daemon\n\n"
 124
 125            "OPTIONS:\n"
 126            "      --system[=BOOL]                   Run as system-wide instance\n"
 127            "  -D, --daemonize[=BOOL]                Daemonize after startup\n"
 128            "      --fail[=BOOL]                     Quit when startup fails\n"
 129            "      --high-priority[=BOOL]            Try to set high nice level\n"
 130            "                                        (only available as root, when SUID or\n"
 131            "                                        with elevated RLIMIT_NICE)\n"
 132            "      --realtime[=BOOL]                 Try to enable realtime scheduling\n"
 133            "                                        (only available as root, when SUID or\n"
 134            "                                        with elevated RLIMIT_RTPRIO)\n"
 135            "      --disallow-module-loading[=BOOL]  Disallow module loading after startup\n"
 136            "      --exit-idle-time=SECS             Terminate the daemon when idle and this\n"
 137            "                                        time passed\n"
 138            "      --module-idle-time=SECS           Unload autoloaded modules when idle and\n"
 139            "                                        this time passed\n"
 140            "      --scache-idle-time=SECS           Unload autoloaded samples when idle and\n"
 141            "                                        this time passed\n"
 142            "      --log-level[=LEVEL]               Increase or set verbosity level\n"
 143            "  -v                                    Increase the verbosity level\n"
 144            "      --log-target={auto,syslog,stderr} Specify the log target\n"
 145            "  -p, --dl-search-path=PATH             Set the search path for dynamic shared\n"
 146            "                                        objects (plugins)\n"
 147            "      --resample-method=[METHOD]        Use the specified resampling method\n"
 148            "                                        (See --dump-resample-methods for\n"
 149            "                                        possible values)\n"
 150            "      --use-pid-file[=BOOL]             Create a PID file\n"
 151            "      --no-cpu-limit[=BOOL]             Do not install CPU load limiter on\n"
 152            "                                        platforms that support it.\n"
 153            "      --disable-shm[=BOOL]              Disable shared memory support.\n\n"
 154
 155            "STARTUP SCRIPT:\n"
 156            "  -L, --load=\"MODULE ARGUMENTS\"         Load the specified plugin module with\n"
 157            "                                        the specified argument\n"
 158            "  -F, --file=FILENAME                   Run the specified script\n"
 159            "  -C                                    Open a command line on the running TTY\n"
 160            "                                        after startup\n\n"
 161
 162            "  -n                                    Don't load default script file\n", e);
 163 }
 164
 165 int pa_cmdline_parse(pa_daemon_conf *conf, int argc, char *const argv [], int *d) {
 166     pa_strbuf *buf = NULL;
 167     int c;
 168
 169     pa_assert(conf);
 170     pa_assert(argc > 0);
 171     pa_assert(argv);
 172
 173     buf = pa_strbuf_new();
 174
 175     if (conf->script_commands)
 176         pa_strbuf_puts(buf, conf->script_commands);
 177
 178     while ((c = getopt_long(argc, argv, "L:F:ChDnp:kv", long_options, NULL)) != -1) {
 179         switch (c) {
 180             case ARG_HELP:
 181             case 'h':
 182                 conf->cmd = PA_CMD_HELP;
 183                 break;
 184
 185             case ARG_VERSION:
 186                 conf->cmd = PA_CMD_VERSION;
 187                 break;
 188
 189             case ARG_DUMP_CONF:
 190                 conf->cmd = PA_CMD_DUMP_CONF;
 191                 break;
 192
 193             case ARG_DUMP_MODULES:
 194                 conf->cmd = PA_CMD_DUMP_MODULES;
 195                 break;
 196
 197             case ARG_DUMP_RESAMPLE_METHODS:
 198                 conf->cmd = PA_CMD_DUMP_RESAMPLE_METHODS;
 199                 break;
 200
 201             case ARG_CLEANUP_SHM:
 202                 conf->cmd = PA_CMD_CLEANUP_SHM;
 203                 break;
 204
 205             case 'k':
 206             case ARG_KILL:
 207                 conf->cmd = PA_CMD_KILL;
 208                 break;
 209
 210             case ARG_CHECK:
 211                 conf->cmd = PA_CMD_CHECK;
 212                 break;
 213
 214             case ARG_LOAD:
 215             case 'L':
 216                 pa_strbuf_printf(buf, "load-module %s\n", optarg);
 217                 break;
 218
 219             case ARG_FILE:
 220             case 'F': {
 221                 char *p;
 222                 pa_strbuf_printf(buf, ".include %s\n", p = pa_make_path_absolute(optarg));
 223                 pa_xfree(p);
 224                 break;
 225             }
 226
 227             case 'C':
 228                 pa_strbuf_puts(buf, "load-module module-cli exit_on_eof=1\n");
 229                 break;
 230
 231             case ARG_DAEMONIZE:
 232             case 'D':
 233                 if ((conf->daemonize = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 234                     pa_log("--daemonize expects boolean argument");
 235                     goto fail;
 236                 }
 237                 break;
 238
 239             case ARG_FAIL:
 240                 if ((conf->fail = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 241                     pa_log("--fail expects boolean argument");
 242                     goto fail;
 243                 }
 244                 break;
 245
 246             case 'v':
 247             case ARG_LOG_LEVEL:
 248
 249                 if (optarg) {
 250                     if (pa_daemon_conf_set_log_level(conf, optarg) < 0) {
 251                         pa_log("--log-level expects log level argument (either numeric in range 0..4 or one of debug, info, notice, warn, error).");
 252                         goto fail;
 253                     }
 254                 } else {
 255                     if (conf->log_level < PA_LOG_LEVEL_MAX-1)
 256                         conf->log_level++;
 257                 }
 258
 259                 break;
 260
 261             case ARG_HIGH_PRIORITY:
 262                 if ((conf->high_priority = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 263                     pa_log("--high-priority expects boolean argument");
 264                     goto fail;
 265                 }
 266                 break;
 267
 268             case ARG_REALTIME:
 269                 if ((conf->realtime_scheduling = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 270                     pa_log("--realtime expects boolean argument");
 271                     goto fail;
 272                 }
 273                 break;
 274
 275             case ARG_DISALLOW_MODULE_LOADING:
 276                 if ((conf->disallow_module_loading = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 277                     pa_log("--disallow-module-loading expects boolean argument");
 278                     goto fail;
 279                 }
 280                 break;
 281
 282             case ARG_USE_PID_FILE:
 283                 if ((conf->use_pid_file = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 284                     pa_log("--use-pid-file expects boolean argument");
 285                     goto fail;
 286                 }
 287                 break;
 288
 289             case 'p':
 290             case ARG_DL_SEARCH_PATH:
 291                 pa_xfree(conf->dl_search_path);
 292                 conf->dl_search_path = *optarg ? pa_xstrdup(optarg) : NULL;
 293                 break;
 294
 295             case 'n':
 296                 pa_xfree(conf->default_script_file);
 297                 conf->default_script_file = NULL;
 298                 break;
 299
 300             case ARG_LOG_TARGET:
 301                 if (pa_daemon_conf_set_log_target(conf, optarg) < 0) {
 302                     pa_log("Invalid log target: use either 'syslog', 'stderr' or 'auto'.");
 303                     goto fail;
 304                 }
 305                 break;
 306
 307             case ARG_EXIT_IDLE_TIME:
 308                 conf->exit_idle_time = atoi(optarg);
 309                 break;
 310
 311             case ARG_MODULE_IDLE_TIME:
 312                 conf->module_idle_time = atoi(optarg);
 313                 break;
 314
 315             case ARG_SCACHE_IDLE_TIME:
 316                 conf->scache_idle_time = atoi(optarg);
 317                 break;
 318
 319             case ARG_RESAMPLE_METHOD:
 320                 if (pa_daemon_conf_set_resample_method(conf, optarg) < 0) {
 321                     pa_log("Invalid resample method '%s'.", optarg);
 322                     goto fail;
 323                 }
 324                 break;
 325
 326             case ARG_SYSTEM:
 327                 if ((conf->system_instance = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 328                     pa_log("--system expects boolean argument");
 329                     goto fail;
 330                 }
 331                 break;
 332
 333             case ARG_NO_CPU_LIMIT:
 334                 if ((conf->no_cpu_limit = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 335                     pa_log("--no-cpu-limit expects boolean argument");
 336                     goto fail;
 337                 }
 338                 break;
 339
 340             case ARG_DISABLE_SHM:
 341                 if ((conf->disable_shm = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
 342                     pa_log("--disable-shm expects boolean argument");
 343                     goto fail;
 344                 }
 345                 break;
 346
 347             default:
 348                 goto fail;
 349         }
 350     }
 351
 352     pa_xfree(conf->script_commands);
 353     conf->script_commands = pa_strbuf_tostring_free(buf);
 354
 355     if (!conf->script_commands) {
 356         pa_xfree(conf->script_commands);
 357         conf->script_commands = NULL;
 358     }
 359
 360     *d = optind;
 361
 362     return 0;
 363
 364 fail:
 365     if (buf)
 366         pa_strbuf_free(buf);
 367
 368     return -1;
 369 }