fade.c: Fix client_cmd()
[paraslash.git] / error.h
1 /*
2 * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file error.h list of error messages for all subsystems */
8
9 /** \cond */
10
11 /* list of all subsystems that use paraslash's error facility */
12 DEFINE_ERRLIST_OBJECT_ENUM;
13
14 /* these do not need error handling (yet) */
15 #define SERVER_ERRORS
16 #define CLIENT_ERRORS
17 #define WAV_ERRORS
18 #define COMPRESS_ERRORS
19 #define TIME_ERRORS
20 #define CLOSE_ON_FORK_ERRORS
21 #define DAEMON_ERRORS
22 #define ORTP_SEND_ERRORS
23 #define GUI_ERRORS
24 #define RINGBUFFER_ERRORS
25 #define SCORE_ERRORS
26 #define SHA1_ERRORS
27 #define RECV_ERRORS
28 #define AFH_COMMON_ERRORS
29
30 extern const char **para_errlist[];
31
32 #define FSCK_ERRORS \
33 PARA_ERROR(FSCK_SYNTAX, "fsck syntax error"), \
34 PARA_ERROR(RANGE_VIOLATION, "range violation detected, very bad"), \
35 PARA_ERROR(NOT_A_REGULAR_FILE, "not a regular file"), \
36
37
38 #define OSL_ERRORS \
39 PARA_ERROR(BAD_DB_DIR, "invalid database directory"), \
40 PARA_ERROR(NO_COLUMN_DESC, "missing column description"), \
41 PARA_ERROR(BAD_NAME, "invalid name for a column/table"), \
42 PARA_ERROR(BAD_STORAGE_TYPE, "invalid storage type"), \
43 PARA_ERROR(BAD_STORAGE_FLAGS, "invalid storage flags"), \
44 PARA_ERROR(NO_COLUMN_NAME, "missing column name"), \
45 PARA_ERROR(NO_COLUMNS, "at least one column required"), \
46 PARA_ERROR(BAD_COLUMN_NAME, "invalid name for a table column"), \
47 PARA_ERROR(NO_UNIQUE_RBTREE_COLUMN, "need at least one mapped column with OSL_UNIQE and OSL_RBTREE OSL"), \
48 PARA_ERROR(NO_RBTREE_COL, "at least one column needs an rbtree"), \
49 PARA_ERROR(DUPLICATE_COL_NAME, "column name given twice"), \
50 PARA_ERROR(BAD_STORAGE_SIZE, "invalid storage size"), \
51 PARA_ERROR(NO_COMPARE_FUNC, "missing compare function"), \
52 PARA_ERROR(BAD_DATA_SIZE, "wrong data size for fixed-size column"), \
53 PARA_ERROR(NOT_MAPPED, "file not mapped"), \
54 PARA_ERROR(ALREADY_MAPPED, "file already mapped"), \
55 PARA_ERROR(BAD_SIZE, "invalid size specified"), \
56 PARA_ERROR(TRUNC, "failed to truncate file"), \
57 PARA_ERROR(UNLINK, "failed to remove file"), \
58 PARA_ERROR(BAD_TABLE, "table not open"), \
59 PARA_ERROR(BAD_TABLE_DESC, "invalid table description"), \
60 PARA_ERROR(RB_KEY_EXISTS, "key already exists in rbtree"), \
61 PARA_ERROR(RB_KEY_NOT_FOUND, "key not found in rbtree"), \
62 PARA_ERROR(BAD_ROW_NUM, "invalid row number"), \
63 PARA_ERROR(INDEX_CORRUPTION, "index corruption detected"), \
64 PARA_ERROR(INVALID_OBJECT, "reference to invalid object"), \
65 PARA_ERROR(STAT, "can not stat file"), \
66 PARA_ERROR(FSTAT, "fstat error"), \
67 PARA_ERROR(RENAME, "rename failed"), \
68 PARA_ERROR(WRITE, "write error"), \
69 PARA_ERROR(LSEEK, "lseek error"), \
70 PARA_ERROR(BUSY, "table is busy"), \
71 PARA_ERROR(SHORT_TABLE, "table too short"), \
72 PARA_ERROR(NO_MAGIC, "missing table header magic"), \
73 PARA_ERROR(VERSION_MISMATCH, "table version not suppoerted"), \
74 PARA_ERROR(BAD_COLUMN_NUM, "invalid column number"), \
75 PARA_ERROR(BAD_TABLE_FLAGS, "invalid flags in table description"), \
76 PARA_ERROR(BAD_ROW, "invalid row"), \
77
78
79 #define RBTREE_ERRORS \
80
81
82 #define AFS_ERRORS \
83 PARA_ERROR(BAD_TABLE_NAME, "invalid table"), \
84 PARA_ERROR(INPUT_TOO_LARGE, "input too large for stdin command"), \
85 PARA_ERROR(AFS_SYNTAX, "afs syntax error"), \
86 PARA_ERROR(AFS_SIGNAL, "afs caught deadly signal"), \
87 PARA_ERROR(AFS_PARENT_DIED, "fatal: server process terminated"), \
88
89
90 #define MOOD_ERRORS \
91 PARA_ERROR(MOOD_SYNTAX, "mood syntax error"), \
92 PARA_ERROR(NO_MOOD, "no mood available"), \
93 PARA_ERROR(MOOD_LOADED, "mood loaded"), \
94 PARA_ERROR(NOT_ADMISSIBLE, "file is not admussible"), \
95
96
97 #define ATTRIBUTE_ERRORS \
98 PARA_ERROR(ATTR_SYNTAX, "attribute syntax error"), \
99 PARA_ERROR(NO_ATTRIBUTES, "no attributes defined yet"), \
100
101 #define BLOB_ERRORS \
102 PARA_ERROR(BLOB_SYNTAX, "blob syntax error"), \
103 PARA_ERROR(DUMMY_ROW, "attempted to access blob dummy object"), \
104
105
106 #define PLAYLIST_ERRORS \
107 PARA_ERROR(NO_PLAYLIST, "no valid playlist found"), \
108 PARA_ERROR(PLAYLIST_LOADED, ""), /* not really an error */ \
109 PARA_ERROR(PATH_FOUND, ""), /* not really an error */ \
110 PARA_ERROR(PLAYLIST_EMPTY, "attempted to load empty playlist"), \
111
112
113 #define AFT_ERRORS \
114 PARA_ERROR(BAD_AFSI, "invaid afs info"), \
115 PARA_ERROR(LOCALTIME, "localtime() failed"), \
116 PARA_ERROR(STRFTIME, "strftime() failed"), \
117 PARA_ERROR(BAD_PATH, "invalid path"), \
118 PARA_ERROR(BAD_SORT, "invalid sorting method"), \
119 PARA_ERROR(FNMATCH, "fnmatch error"), \
120 PARA_ERROR(NO_MATCH, "no matches"), \
121 PARA_ERROR(NO_AFHI, "audio format handler info required"), \
122 PARA_ERROR(AFT_SYNTAX, "audio file table syntax error"), \
123 PARA_ERROR(HASH_MISMATCH, "hash mismatch, consider re-add"), \
124
125
126 #define USER_LIST_ERRORS \
127 PARA_ERROR(USERLIST, "failed to open user list file"), \
128
129
130 #define OSX_WRITE_ERRORS \
131 PARA_ERROR(STREAM_FORMAT, "could not set stream format"), \
132 PARA_ERROR(ADD_CALLBACK, "can not add callback"), \
133 PARA_ERROR(OPEN_COMP, "OpenAComponent() error"), \
134 PARA_ERROR(UNIT_INIT, "AudioUnitInitialize() error"), \
135 PARA_ERROR(UNIT_START, "AudioUnitStart() error"), \
136 PARA_ERROR(DEFAULT_COMP, "can not find default audio output component"), \
137
138
139 #define AUDIOC_ERRORS \
140 PARA_ERROR(AUDIOC_SYNTAX, "audioc syntax error"), \
141 PARA_ERROR(AUDIOC_READ, "audioc read error"), \
142 PARA_ERROR(AUDIOC_WRITE, "audioc write error"), \
143 PARA_ERROR(AUDIOC_OVERRUN, "audioc buffer overrun"), \
144
145
146
147 #define CLIENT_COMMON_ERRORS \
148 PARA_ERROR(CLIENT_SYNTAX, "syntax error"), \
149 PARA_ERROR(INVALID_CHALLENGE, "did not receive valid challenge"), \
150 PARA_ERROR(NO_CONFIG, "config file not found"), \
151 PARA_ERROR(CLIENT_AUTH, "authentication failed"), \
152 PARA_ERROR(SERVER_EOF, "connection closed by para_server"), \
153 PARA_ERROR(INPUT_EOF, "end of input"), \
154 PARA_ERROR(HANDSHAKE_COMPLETE, ""), /* not really an error */ \
155
156
157 #define SCHED_ERRORS \
158 PARA_ERROR(TASK_KILLED, "task killed"), \
159 PARA_ERROR(NO_SUCH_TASK, "task not found"), \
160 PARA_ERROR(NOT_INITIALIZED, "scheduler not yet initialized"), \
161
162
163 #define STDIN_ERRORS \
164 PARA_ERROR(STDIN_READ, "failed to read from stdin"), \
165 PARA_ERROR(STDIN_EOF, "end of file"), \
166
167
168 #define STDOUT_ERRORS \
169 PARA_ERROR(STDOUT_WRITE, "failed to write to stdout"), \
170 PARA_ERROR(STDOUT_EOF, "end of file"), \
171
172
173 #define NET_ERRORS \
174 PARA_ERROR(SEND, "send error"), \
175 PARA_ERROR(RECV, "receive error"), \
176 PARA_ERROR(SOCKET, "socket error"), \
177 PARA_ERROR(CONNECT, "connect error"), \
178 PARA_ERROR(ACCEPT, "accept error"), \
179 PARA_ERROR(SETSOCKOPT, "failed to set socket options"), \
180 PARA_ERROR(BIND, "bind error"), \
181 PARA_ERROR(NAME_TOO_LONG, "name too long for struct sockaddr_un"), \
182 PARA_ERROR(CHMOD, "failed to set socket mode"), \
183 PARA_ERROR(SENDMSG, "sendmsg() failed"), \
184 PARA_ERROR(RECVMSG, "recvmsg() failed"), \
185 PARA_ERROR(SCM_CREDENTIALS, "did not receive SCM credentials"), \
186 PARA_ERROR(LISTEN, "listen error"), \
187 PARA_ERROR(RECV_PATTERN, "did not receive expected pattern"), \
188 PARA_ERROR(HOST_INFO, "gethostbyname() failed"), \
189
190
191 #define ORTP_RECV_ERRORS \
192 PARA_ERROR(MSG_TO_BUF, "failed to extract rtp packet"), \
193 PARA_ERROR(ORTP_SYNTAX, "ottp syntax error"), \
194 PARA_ERROR(TOO_MANY_BAD_CHUNKS, "too many consecutive bad chunks"), \
195 PARA_ERROR(INVALID_HEADER, "invalid header packet"), \
196 PARA_ERROR(OVERRUN, "outout buffer overrun"), \
197 PARA_ERROR(ORTP_RECV_EOF, "ortp_recv: end of file"), \
198
199
200 #define HTTP_RECV_ERRORS \
201 PARA_ERROR(HTTP_RECV_EOF, "http_recv: end of file"), \
202 PARA_ERROR(HTTP_RECV_OVERRUN, "http_recv: outout buffer overrun"), \
203
204 #define RECV_COMMON_ERRORS \
205 PARA_ERROR(RECV_SYNTAX, "recv syntax error"), \
206
207
208 #define AUDIOD_ERRORS \
209 PARA_ERROR(NO_MORE_SLOTS, "no more empty slots"), \
210 PARA_ERROR(MISSING_COLON, "syntax error: missing colon"), \
211 PARA_ERROR(UNSUPPORTED_AUDIO_FORMAT, "given audio format not supported"), \
212 PARA_ERROR(SIGNAL_CAUGHT, "caught signal"), \
213
214
215 #define AUDIOD_COMMAND_ERRORS \
216 PARA_ERROR(CLIENT_WRITE, "client write error"), \
217 PARA_ERROR(AUDIOD_SYNTAX, "syntax error"), \
218 PARA_ERROR(UCRED_PERM, "permission denied"), \
219 PARA_ERROR(INVALID_AUDIOD_CMD, "invalid command"), \
220
221
222 #define FILTER_CHAIN_ERRORS \
223 PARA_ERROR(UNSUPPORTED_FILTER, "given filter not supported"), \
224 PARA_ERROR(BAD_FILTER_OPTIONS, "invalid filter option given"), \
225 PARA_ERROR(FC_EOF, "filter chain: eof"), \
226
227
228 #define STAT_ERRORS \
229 PARA_ERROR(TOO_MANY_CLIENTS, "maximal number of stat clients exceeded"), \
230 PARA_ERROR(UNKNOWN_STAT_ITEM, "status item not recognized"), \
231
232
233 #define OGGDEC_ERRORS \
234 PARA_ERROR(OGGDEC_READ, "read from media returned an error"), \
235 PARA_ERROR(OGGDEC_NOTVORBIS, "bitstream is not vorbis data"), \
236 PARA_ERROR(OGGDEC_VERSION, "vorbis version mismatch"), \
237 PARA_ERROR(OGGDEC_BADHEADER, "invalid vorbis bitstream header"), \
238 PARA_ERROR(OGGDEC_FAULT, "bug or heap/stack corruption"), \
239 PARA_ERROR(OGGDEC_BADLINK, "invalid stream section or requested link corrupt"), \
240
241
242 #define GRAB_CLIENT_ERRORS \
243 PARA_ERROR(PEDANTIC_GRAB, "fd not ready and pedantic grab requested"), \
244 PARA_ERROR(GC_WRITE, "grab client write error"), \
245 PARA_ERROR(BAD_GC_SLOT, "invalid slot requested by grab client"), \
246 PARA_ERROR(BAD_GC_FILTER_NUM, "invalid filter number given"), \
247 PARA_ERROR(GC_SYNTAX, "grab client syntax error"), \
248 PARA_ERROR(GC_HELP_GIVEN, ""), /* not really an error */ \
249 PARA_ERROR(GC_VERSION_GIVEN, ""), /* not really an error */ \
250
251
252 #define MP3DEC_ERRORS \
253 PARA_ERROR(MAD_FRAME_DECODE, "mad frame decode error"), \
254 PARA_ERROR(MP3DEC_OVERRUN, "mp3 output buffer overrun"), \
255
256
257 #define FILTER_ERRORS \
258 PARA_ERROR(NO_FILTERS, "at least one filter must be given"), \
259 PARA_ERROR(FILTER_SYNTAX, "syntax error"), \
260
261
262 #define SIGNAL_ERRORS \
263 PARA_ERROR(SIGNAL_SIG_ERR, "signal() retured SIG_ERR"), \
264 PARA_ERROR(SIGNAL_READ, "read error from signal pipe"), \
265
266
267 #define STRING_ERRORS \
268 PARA_ERROR(MKSTEMP, "mkstemp error: unable to create tmp file"), \
269 PARA_ERROR(FCHMOD, "fchmod error: can not set mode"), \
270 PARA_ERROR(ATOI_OVERFLOW, "value too large"), \
271 PARA_ERROR(STRTOLL, "unknown strtoll error"), \
272 PARA_ERROR(ATOI_NO_DIGITS, "no digits found in string"), \
273 PARA_ERROR(ATOI_JUNK_AT_END, "further characters after number"), \
274
275
276 #define EXEC_ERRORS \
277 PARA_ERROR(DUP_PIPE, "exec error: can not create pipe"), \
278 PARA_ERROR(NULL_OPEN, "can not open /dev/null"), \
279
280
281 #define MP3_AFH_ERRORS \
282 PARA_ERROR(FRAME, "invalid mp3 frame"), \
283 PARA_ERROR(FRAME_LENGTH, "invalid frame length"), \
284 PARA_ERROR(MP3_INFO, "could not read mp3 info"), \
285 PARA_ERROR(HEADER_FREQ, "invalid header frequency"), \
286 PARA_ERROR(HEADER_BITRATE, "invalid header bitrate"), \
287
288
289 #define AAC_AFH_ERRORS \
290 PARA_ERROR(STSZ, "did not find stcz atom"), \
291 PARA_ERROR(MP4ASC, "audio spec config error"), \
292 PARA_ERROR(AAC_AFH_INIT, "failed to init aac decoder"), \
293
294
295 #define AAC_COMMON_ERRORS \
296 PARA_ERROR(ESDS, "did not find esds atom"), \
297 PARA_ERROR(STCO, "did not find stco atom"), \
298
299
300 #define OGG_AFH_ERRORS \
301 PARA_ERROR(OGG_READ, "ogg read error"), \
302 PARA_ERROR(SYNC_PAGEOUT, "ogg sync page-out error (no ogg file?)"), \
303 PARA_ERROR(STREAM_PAGEIN, "ogg stream page-in error (first page)"), \
304 PARA_ERROR(STREAM_PACKETOUT, "ogg stream packet-out error (first packet)"), \
305 PARA_ERROR(VORBIS, "vorbis synthesis header-in error (not vorbis?)"), \
306 PARA_ERROR(OGG_INFO, "ov_info error"), \
307 PARA_ERROR(OGG_VERSION, "unsupported ogg version"), \
308 PARA_ERROR(OGG_BAD_HEADER, "invalid ogg vorbis header"), \
309 PARA_ERROR(OGG_UNKNOWN_ERROR, "unknown ogg vorbis error"), \
310
311
312 #define VSS_ERRORS \
313 PARA_ERROR(BAD_AUDIO_FILE_SUFFIX, "unknown suffix"), \
314 PARA_ERROR(AUDIO_FORMAT, "audio format not recognized"), \
315 PARA_ERROR(CHUNK, "unable to get chunk"), \
316 PARA_ERROR(SHORT_AFS_READ, "short read from afs socket"), \
317 PARA_ERROR(BAD_AFS_CODE, "received junk from afs"), \
318
319
320 #define CRYPT_ERRORS \
321 PARA_ERROR(PRIVATE_KEY, "can not read private key"), \
322 PARA_ERROR(PUBLIC_KEY, "can not read public key"), \
323 PARA_ERROR(RSA, "RSA error"), \
324 PARA_ERROR(ENCRYPT, "encrypt error"), \
325 PARA_ERROR(DECRYPT, "decrypt error"), \
326 PARA_ERROR(CHALLENGE, "failed to read challenge"), \
327
328
329 #define HTTP_SEND_ERRORS \
330 PARA_ERROR(WRITE_OK, "can not check whether fd is writable"), \
331 PARA_ERROR(SEND_QUEUED_CHUNK, "failed to send queued chunk"), \
332
333
334 #define COMMAND_ERRORS \
335 PARA_ERROR(COMMAND_SYNTAX, "syntax error in command"), \
336 PARA_ERROR(AUTH, "did not receive auth request"), \
337 PARA_ERROR(BAD_SELECTOR, "no such audio file selector"), \
338 PARA_ERROR(NO_AUDIO_FILE, "no audio file"), \
339 PARA_ERROR(BAD_CMD, "invalid command"), \
340 PARA_ERROR(PERM, "permission denied"), \
341 PARA_ERROR(LOCK, "lock error"), \
342 PARA_ERROR(SENDER_CMD, "command not supported by this sender"), \
343 PARA_ERROR(SERVER_CRASH, "para_server crashed -- can not live without it"), \
344 PARA_ERROR(BAD_USER, "you don't exist. Go away."), \
345
346
347 #define IPC_ERRORS \
348 PARA_ERROR(SEM_GET, "failed to create semaphore"), \
349 PARA_ERROR(SEM_REMOVE, "can not remove semaphore"), \
350 PARA_ERROR(SHM_GET, "failed to allocate shared memory area"), \
351 PARA_ERROR(SHM_DESTROY, "failed to destroy shared memory area"), \
352 PARA_ERROR(SHM_ATTACH, "can not attach shared memory area"), \
353 PARA_ERROR(SHM_DETACH, "can not detach shared memory area"), \
354
355
356 #define DCCP_ERRORS \
357 PARA_ERROR(DCCP_SOCKET, "can not create dccp socket"), \
358
359
360 #define DCCP_RECV_ERRORS \
361 PARA_ERROR(ADDR_INFO, "getaddrinfo error"), \
362 PARA_ERROR(DCCP_OVERRUN, "dccp output buffer buffer overrun"), \
363 PARA_ERROR(DCCP_CONNECT, "dccp connect error"), \
364 PARA_ERROR(DCCP_RECV_EOF, "dccp_recv: end of file"), \
365
366
367 #define DCCP_SEND_ERRORS \
368 PARA_ERROR(DCCP_BIND, "dccp bind error"), \
369 PARA_ERROR(DCCP_LISTEN, "dccp listen error"), \
370 PARA_ERROR(DCCP_WRITE, "dccp write error"), \
371
372
373 #define FD_ERRORS \
374 PARA_ERROR(FGETS, "fgets error"), \
375 PARA_ERROR(CHDIR, "failed to change directory"), \
376 PARA_ERROR(OPEN, "failed to open file"), \
377 PARA_ERROR(CHDIR_PERM, "insufficient permissions to chdir"), \
378 PARA_ERROR(EMPTY, "file empty"), \
379 PARA_ERROR(MMAP, "mmap error"), \
380 PARA_ERROR(MUNMAP, "munmap failed"), \
381
382
383 #define WRITE_ERRORS \
384 PARA_ERROR(WRITE_SYNTAX, "para_write syntax error"), \
385 PARA_ERROR(PREMATURE_END, "premature end of audio file"), \
386 PARA_ERROR(NO_WAV_HEADER, "wave header not found"), \
387 PARA_ERROR(WAV_HEADER_SUCCESS, "successfully read wave header"), \
388 PARA_ERROR(NO_DELAY, "no initial delay"), \
389 PARA_ERROR(DELAY_TIMEOUT, "initial delay timeout"), \
390
391
392 #define ALSA_WRITE_ERRORS \
393 PARA_ERROR(BROKEN_CONF, "Broken alsa configuration"), \
394 PARA_ERROR(ACCESS_TYPE, "alsa access type not available"), \
395 PARA_ERROR(SAMPLE_FORMAT, "sample format not available"), \
396 PARA_ERROR(CHANNEL_COUNT, "channels count not available"), \
397 PARA_ERROR(HW_PARAMS, "unable to install hw params"), \
398 PARA_ERROR(SW_PARAMS, "unable to install sw params"), \
399 PARA_ERROR(BAD_PERIOD, "can not use period equal to buffer size"), \
400 PARA_ERROR(GET_XFER, "unable to obtain xfer align"), \
401 PARA_ERROR(SET_XFER, "snd_pcm_sw_params_set_xfer_align() failed"), \
402 PARA_ERROR(ALSA_WRITE, "alsa write error"), \
403 PARA_ERROR(PCM_OPEN, "unable to open pcm"), \
404 PARA_ERROR(SND_PCM_INFO, "pcm info error"), \
405 PARA_ERROR(GET_BUFFER_TIME, "snd_pcm_hw_params_get_buffer_time_max() failed"), \
406 PARA_ERROR(SET_BUFFER_TIME, "snd_pcm_hw_params_set_buffer_time_near() failed"), \
407 PARA_ERROR(SET_RATE, "snd_pcm_hw_params_set_rate_near failed"), \
408 PARA_ERROR(START_THRESHOLD, "snd_pcm_sw_params_set_start_threshold() failed"), \
409 PARA_ERROR(STOP_THRESHOLD, "snd_pcm_sw_params_set_stop_threshold() failed"), \
410
411
412 #define FILE_WRITE_ERRORS \
413 PARA_ERROR(FW_WRITE, "file writer write error"), \
414 PARA_ERROR(FW_OPEN, "file writer: can not open output file"), \
415 PARA_ERROR(FW_NO_FILE, "task started without open file"), \
416
417
418 #define WRITE_COMMON_ERRORS \
419 PARA_ERROR(WRITE_COMMON_SYNTAX, "syntax error in write option"), \
420 PARA_ERROR(WNG_EOF, "wng: end of file"), \
421
422
423 #define AACDEC_ERRORS \
424 PARA_ERROR(AACDEC_INIT, "failed to init aac decoder"), \
425 PARA_ERROR(AAC_DECODE, "aac decode error"), \
426 PARA_ERROR(AAC_OVERRUN, "aac output buffer overrun"), \
427
428
429 #define CHUNK_QUEUE_ERRORS \
430 PARA_ERROR(QUEUE, "packet queue overrun"), \
431
432 /** \endcond */
433
434 /**
435 * the subsystem shift
436 *
437 * 255 error codes ought to be enough for every subsystem. Use the higher bits
438 * of the return value to encode the subsystem number
439 */
440 #define SS_SHIFT 8
441
442 /**
443 * compute the subsystem offset
444 *
445 * It is given by x * 2**8 where \a x is the subsystem number
446 */
447 #define SS_OFFSET(ss) (SS_ ## ss << SS_SHIFT)
448
449 /**
450 * make the enum of all errors of one subsystem
451 *
452 * As zero should not be an error, we define a dummy enum entry with value
453 * 2**ss. That lets the real errors start at 2**ss + 1.
454 */
455 #define SS_ENUM(ss) enum {\
456 E_ ## ss ## _DUMMY = SS_OFFSET(ss), \
457 ss ## _ERRORS}
458
459 /**
460 * determine the subsystem number from the error number
461 *
462 * Easy, it's just \a num / 2**8.
463 */
464 #define ERRNUM_TO_SS(num) ((num) >> SS_SHIFT)
465
466 /**
467 * determine the index of an error number
468 *
469 * Also easy: It's the lower 8 bits of num.
470 */
471 #define ERRNUM_TO_INDEX(num) (((1 << SS_SHIFT) - 1) & (num))
472
473 #define SYSTEM_ERROR_BIT 30
474
475 #define IS_SYSTEM_ERROR(num) (!!((num) & (1 << SYSTEM_ERROR_BIT)))
476
477 #define ERRNO_TO_PARA_ERROR(num) ((num) | (1 << SYSTEM_ERROR_BIT))
478
479 static inline int is_errno(int val, int _errno)
480 {
481 assert(val > 0 && _errno > 0);
482 return ERRNO_TO_PARA_ERROR(_errno) == val;
483 }
484
485 /**
486 * paraslash's version of strerror(3)
487 *
488 * expands to the error text of \a num (a string constant).
489 */
490 #define PARA_STRERROR(num) IS_SYSTEM_ERROR(num)? \
491 strerror((num) & ((1 << SYSTEM_ERROR_BIT) - 1)) : \
492 para_errlist[ERRNUM_TO_SS(num)] [ERRNUM_TO_INDEX(num)]
493
494 /**
495 * define the error list for one subsystem
496 #
497 * The first entry (index 0) is always the name of the subsystem
498 * Used by macros in config.h (generated by configure)
499 */
500 #define DEFINE_ERRLIST(ss) const char * ss ## _ERRLIST[] = {#ss, ss ## _ERRORS}
501
502 /**
503 * activate errors for one subsystem.
504 *
505 * Each executable needs only the error lists of those subssystems it is
506 * actually linked with. We always reserve space for NUM_SS char ** pointers,
507 * but only init those of the needed subsystems. This macro is used by macros
508 * in config.h (generated by configure).
509 */
510 #define PARA_ERRLIST(ss) [SS_ ## ss] = ss ## _ERRLIST
511
512 /**
513 * This is temporarily defined to expand to its first argument (prefixed by
514 * 'E_') and gets later redefined to expand to the error text only
515 */
516 #define PARA_ERROR(err, msg) E_ ## err
517 #include "error2.h"
518 #undef PARA_ERROR
519 /* rest of the world only sees the error text */
520 #define PARA_ERROR(err, msg) msg