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