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