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*/
1 /*
2 * Copyright 2012-2021 the Pacemaker project contributors
3 *
4 * The version control history for this file may have further details.
5 *
6 * This source code is licensed under the GNU Lesser General Public License
7 * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
8 */
9 #ifndef PCMK__CRM_COMMON_RESULTS__H
10 # define PCMK__CRM_COMMON_RESULTS__H
11
12 #ifdef __cplusplus
13 extern "C" {
14 #endif
15
16 /*!
17 * \file
18 * \brief Function and executable result codes
19 * \ingroup core
20 */
21
22 // Lifted from config.h
23 /* The _Noreturn keyword of C11. */
24 #ifndef _Noreturn
25 # if (defined __cplusplus \
26 && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
27 || (defined _MSC_VER && 1900 <= _MSC_VER)))
28 # define _Noreturn [[noreturn]]
29 # elif ((!defined __cplusplus || defined __clang__) \
30 && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
31 || 4 < __GNUC__ + (7 <= __GNUC_MINOR__)))
32 /* _Noreturn works as-is. */
33 # elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 0x5110 <= __SUNPRO_C
34 # define _Noreturn __attribute__ ((__noreturn__))
35 # elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
36 # define _Noreturn __declspec (noreturn)
37 # else
38 # define _Noreturn
39 # endif
40 #endif
41
42 # define CRM_ASSERT(expr) do { \
43 if (!(expr)) { \
44 crm_abort(__FILE__, __func__, __LINE__, #expr, TRUE, FALSE); \
45 abort(); /* crm_abort() doesn't always abort! */ \
46 } \
47 } while(0)
48
49 /*
50 * Function return codes
51 *
52 * Most Pacemaker API functions return an integer return code. There are two
53 * alternative interpretations. The legacy interpration is that the absolute
54 * value of the return code is either a system error number or a custom
55 * pcmk_err_* number. This is less than ideal because system error numbers are
56 * constrained only to the positive int range, so there's the possibility that
57 * system errors and custom errors could collide (which did in fact happen
58 * already on one architecture). The new intepretation is that negative values
59 * are from the pcmk_rc_e enum, and positive values are system error numbers.
60 * Both use 0 for success.
61 *
62 * For system error codes, see:
63 * - /usr/include/asm-generic/errno.h
64 * - /usr/include/asm-generic/errno-base.h
65 */
66
67 // Legacy custom return codes for Pacemaker API functions (deprecated)
68 # define pcmk_ok 0
69 # define PCMK_ERROR_OFFSET 190 /* Replacements on non-linux systems, see include/portability.h */
70 # define PCMK_CUSTOM_OFFSET 200 /* Purely custom codes */
71 # define pcmk_err_generic 201
72 # define pcmk_err_no_quorum 202
73 # define pcmk_err_schema_validation 203
74 # define pcmk_err_transform_failed 204
75 # define pcmk_err_old_data 205
76 # define pcmk_err_diff_failed 206
77 # define pcmk_err_diff_resync 207
78 # define pcmk_err_cib_modified 208
79 # define pcmk_err_cib_backup 209
80 # define pcmk_err_cib_save 210
81 # define pcmk_err_schema_unchanged 211
82 # define pcmk_err_cib_corrupt 212
83 # define pcmk_err_multiple 213
84 # define pcmk_err_node_unknown 214
85 # define pcmk_err_already 215
86 /* On HPPA 215 is ENOSYM (Unknown error 215), which hopefully never happens. */
87 #ifdef __hppa__
88 # define pcmk_err_bad_nvpair 250 /* 216 is ENOTSOCK */
89 # define pcmk_err_unknown_format 252 /* 217 is EDESTADDRREQ */
90 #else
91 # define pcmk_err_bad_nvpair 216
92 # define pcmk_err_unknown_format 217
93 #endif
94
95 /*!
96 * \enum pcmk_rc_e
97 * \brief Return codes for Pacemaker API functions
98 *
99 * Any Pacemaker API function documented as returning a "standard Pacemaker
100 * return code" will return pcmk_rc_ok (0) on success, and one of this
101 * enumeration's other (negative) values or a (positive) system error number
102 * otherwise. The custom codes are at -1001 and lower, so that the caller may
103 * use -1 through -1000 for their own custom values if desired. While generally
104 * referred to as "errors", nonzero values simply indicate a result, which might
105 * or might not be an error depending on the calling context.
106 */
107 enum pcmk_rc_e {
108 /* When adding new values, use consecutively lower numbers, update the array
109 * in lib/common/results.c, and test with crm_error.
110 */
111 pcmk_rc_invalid_transition = -1031,
112 pcmk_rc_graph_error = -1030,
113 pcmk_rc_dot_error = -1029,
114 pcmk_rc_underflow = -1028,
115 pcmk_rc_no_input = -1027,
116 pcmk_rc_no_output = -1026,
117 pcmk_rc_after_range = -1025,
118 pcmk_rc_within_range = -1024,
119 pcmk_rc_before_range = -1023,
120 pcmk_rc_undetermined = -1022,
121 pcmk_rc_op_unsatisfied = -1021,
122 pcmk_rc_ipc_pid_only = -1020,
123 pcmk_rc_ipc_unresponsive = -1019,
124 pcmk_rc_ipc_unauthorized = -1018,
125 pcmk_rc_no_quorum = -1017,
126 pcmk_rc_schema_validation = -1016,
127 pcmk_rc_schema_unchanged = -1015,
128 pcmk_rc_transform_failed = -1014,
129 pcmk_rc_old_data = -1013,
130 pcmk_rc_diff_failed = -1012,
131 pcmk_rc_diff_resync = -1011,
132 pcmk_rc_cib_modified = -1010,
133 pcmk_rc_cib_backup = -1009,
134 pcmk_rc_cib_save = -1008,
135 pcmk_rc_cib_corrupt = -1007,
136 pcmk_rc_multiple = -1006,
137 pcmk_rc_node_unknown = -1005,
138 pcmk_rc_already = -1004,
139 pcmk_rc_bad_nvpair = -1003,
140 pcmk_rc_unknown_format = -1002,
141 // Developers: Use a more specific code than pcmk_rc_error whenever possible
142 pcmk_rc_error = -1001,
143
144 // Values -1 through -1000 reserved for caller use
145
146 pcmk_rc_ok = 0
147
148 // Positive values reserved for system error numbers
149 };
150
151
152 /*!
153 * \enum ocf_exitcode
154 * \brief Exit status codes for resource agents
155 *
156 * The OCF Resource Agent API standard enumerates the possible exit status codes
157 * that agents should return. Besides being used with OCF agents, these values
158 * are also used by the executor as a universal status for all agent standards;
159 * actual results are mapped to these before returning them to clients.
160 */
161 enum ocf_exitcode {
162 PCMK_OCF_OK = 0, //!< Success
163 PCMK_OCF_UNKNOWN_ERROR = 1, //!< Unspecified error
164 PCMK_OCF_INVALID_PARAM = 2, //!< Parameter invalid (in local context)
165 PCMK_OCF_UNIMPLEMENT_FEATURE = 3, //!< Requested action not implemented
166 PCMK_OCF_INSUFFICIENT_PRIV = 4, //!< Insufficient privileges
167 PCMK_OCF_NOT_INSTALLED = 5, //!< Dependencies not available locally
168 PCMK_OCF_NOT_CONFIGURED = 6, //!< Parameter invalid (inherently)
169 PCMK_OCF_NOT_RUNNING = 7, //!< Service safely stopped
170 PCMK_OCF_RUNNING_PROMOTED = 8, //!< Service active and promoted
171 PCMK_OCF_FAILED_PROMOTED = 9, //!< Service failed and possibly in promoted role
172 PCMK_OCF_DEGRADED = 190, //!< Service active but more likely to fail soon
173 PCMK_OCF_DEGRADED_PROMOTED = 191, //!< Service promoted but more likely to fail soon
174
175 /* These two are Pacemaker extensions, not in the OCF standard. The
176 * controller records PCMK_OCF_UNKNOWN for pending actions.
177 * PCMK_OCF_CONNECTION_DIED is used only with older DCs that don't support
178 * PCMK_EXEC_NOT_CONNECTED.
179 *
180 * @TODO PCMK_OCF_UNKNOWN should be deprecated, and an execution status of
181 * PCMK_EXEC_PENDING relied on instead (though it might be worthwhile to
182 * keep PCMK_OCF_UNKNOWN as an invalid value for initializing new action
183 * objects). However, backward compatibility must be considered (processing
184 * old saved CIB files, rolling upgrades with older DCs, older
185 * Pacemaker Remote nodes or connection hosts, and older bundles).
186 */
187 PCMK_OCF_CONNECTION_DIED = 189, //!< \deprecated See PCMK_EXEC_NOT_CONNECTED
188 PCMK_OCF_UNKNOWN = 193, //!< Action is pending
189
190 #if !defined(PCMK_ALLOW_DEPRECATED) || (PCMK_ALLOW_DEPRECATED == 1)
191 // Former Pacemaker extensions
192 PCMK_OCF_EXEC_ERROR = 192, //!< \deprecated (Unused)
193 PCMK_OCF_SIGNAL = 194, //!< \deprecated (Unused)
194 PCMK_OCF_NOT_SUPPORTED = 195, //!< \deprecated (Unused)
195 PCMK_OCF_PENDING = 196, //!< \deprecated (Unused)
196 PCMK_OCF_CANCELLED = 197, //!< \deprecated (Unused)
197 PCMK_OCF_TIMEOUT = 198, //!< \deprecated (Unused)
198 PCMK_OCF_OTHER_ERROR = 199, //!< \deprecated (Unused)
199
200 //! \deprecated Use PCMK_OCF_RUNNING_PROMOTED instead
201 PCMK_OCF_RUNNING_MASTER = PCMK_OCF_RUNNING_PROMOTED,
202
203 //! \deprecated Use PCMK_OCF_FAILED_PROMOTED instead
204 PCMK_OCF_FAILED_MASTER = PCMK_OCF_FAILED_PROMOTED,
205
206 //! \deprecated Use PCMK_OCF_DEGRADED_PROMOTED instead
207 PCMK_OCF_DEGRADED_MASTER = PCMK_OCF_DEGRADED_PROMOTED,
208 #endif
209 };
210
211 /*!
212 * \enum crm_exit_e
213 * \brief Exit status codes for tools and daemons
214 *
215 * We want well-specified (i.e. OS-invariant) exit status codes for our daemons
216 * and applications so they can be relied on by callers. (Function return codes
217 * and errno's do not make good exit statuses.)
218 *
219 * The only hard rule is that exit statuses must be between 0 and 255; all else
220 * is convention. Universally, 0 is success, and 1 is generic error (excluding
221 * OSes we don't support -- for example, OpenVMS considers 1 success!).
222 *
223 * For init scripts, the LSB gives meaning to 0-7, and sets aside 150-199 for
224 * application use. OCF adds 8-9 and 190-191.
225 *
226 * sysexits.h was an attempt to give additional meanings, but never really
227 * caught on. It uses 0 and 64-78.
228 *
229 * Bash reserves 2 ("incorrect builtin usage") and 126-255 (126 is "command
230 * found but not executable", 127 is "command not found", 128 + n is
231 * "interrupted by signal n").
232 *
233 * tldp.org recommends 64-113 for application use.
234 *
235 * We try to overlap with the above conventions when practical.
236 */
237 typedef enum crm_exit_e {
238 // Common convention
239 CRM_EX_OK = 0, //!< Success
240 CRM_EX_ERROR = 1, //!< Unspecified error
241
242 // LSB + OCF
243 CRM_EX_INVALID_PARAM = 2, //!< Parameter invalid (in local context)
244 CRM_EX_UNIMPLEMENT_FEATURE = 3, //!< Requested action not implemented
245 CRM_EX_INSUFFICIENT_PRIV = 4, //!< Insufficient privileges
246 CRM_EX_NOT_INSTALLED = 5, //!< Dependencies not available locally
247 CRM_EX_NOT_CONFIGURED = 6, //!< Parameter invalid (inherently)
248 CRM_EX_NOT_RUNNING = 7, //!< Service safely stopped
249
250 // sysexits.h
251 CRM_EX_USAGE = 64, //!< Command line usage error
252 CRM_EX_DATAERR = 65, //!< User-supplied data incorrect
253 CRM_EX_NOINPUT = 66, //!< Input file not available
254 CRM_EX_NOUSER = 67, //!< User does not exist
255 CRM_EX_NOHOST = 68, //!< Host unknown
256 CRM_EX_UNAVAILABLE = 69, //!< Needed service unavailable
257 CRM_EX_SOFTWARE = 70, //!< Internal software bug
258 CRM_EX_OSERR = 71, //!< External (OS/environmental) problem
259 CRM_EX_OSFILE = 72, //!< System file not usable
260 CRM_EX_CANTCREAT = 73, //!< File couldn't be created
261 CRM_EX_IOERR = 74, //!< File I/O error
262 CRM_EX_TEMPFAIL = 75, //!< Try again
263 CRM_EX_PROTOCOL = 76, //!< Protocol violated
264 CRM_EX_NOPERM = 77, //!< Non-file permission issue
265 CRM_EX_CONFIG = 78, //!< Misconfiguration
266
267 // Custom
268 CRM_EX_FATAL = 100, //!< Do not respawn
269 CRM_EX_PANIC = 101, //!< Panic the local host
270 CRM_EX_DISCONNECT = 102, //!< Lost connection to something
271 CRM_EX_OLD = 103, //!< Update older than existing config
272 CRM_EX_DIGEST = 104, //!< Digest comparison failed
273 CRM_EX_NOSUCH = 105, //!< Requested item does not exist
274 CRM_EX_QUORUM = 106, //!< Local partition does not have quorum
275 CRM_EX_UNSAFE = 107, //!< Requires --force or new conditions
276 CRM_EX_EXISTS = 108, //!< Requested item already exists
277 CRM_EX_MULTIPLE = 109, //!< Requested item has multiple matches
278 CRM_EX_EXPIRED = 110, //!< Requested item has expired
279 CRM_EX_NOT_YET_IN_EFFECT = 111, //!< Requested item is not in effect
280 CRM_EX_INDETERMINATE = 112, //!< Could not determine status
281 CRM_EX_UNSATISFIED = 113, //!< Requested item does not satisfy constraints
282
283 // Other
284 CRM_EX_TIMEOUT = 124, //!< Convention from timeout(1)
285
286 /* Anything above 128 overlaps with some shells' use of these values for
287 * "interrupted by signal N", and so may be unreliable when detected by
288 * shell scripts.
289 */
290
291 // OCF Resource Agent API 1.1
292 CRM_EX_DEGRADED = 190, //!< Service active but more likely to fail soon
293 CRM_EX_DEGRADED_PROMOTED = 191, //!< Service promoted but more likely to fail soon
294
295 CRM_EX_MAX = 255, //!< Ensure crm_exit_t can hold this
296 } crm_exit_t;
297
298 /*!
299 * \enum pcmk_exec_status
300 * \brief Execution status
301 *
302 * These codes are used to specify the result of the attempt to execute an
303 * agent, rather than the agent's result itself.
304 */
305 enum pcmk_exec_status {
306 PCMK_EXEC_UNKNOWN = -2, //!< Used only to initialize variables
307 PCMK_EXEC_PENDING = -1, //!< Action is in progress
308 PCMK_EXEC_DONE, //!< Action completed, result is known
309 PCMK_EXEC_CANCELLED, //!< Action was cancelled
310 PCMK_EXEC_TIMEOUT, //!< Action did not complete in time
311 PCMK_EXEC_NOT_SUPPORTED, //!< Agent does not implement requested action
312 PCMK_EXEC_ERROR, //!< Execution failed, may be retried
313 PCMK_EXEC_ERROR_HARD, //!< Execution failed, do not retry on node
314 PCMK_EXEC_ERROR_FATAL, //!< Execution failed, do not retry anywhere
315 PCMK_EXEC_NOT_INSTALLED, //!< Agent or dependency not available locally
316 PCMK_EXEC_NOT_CONNECTED, //!< No connection to executor
317 PCMK_EXEC_INVALID, //!< Action cannot be attempted (e.g. shutdown)
318 PCMK_EXEC_NO_FENCE_DEVICE, //!< No fence device is configured for target
319 PCMK_EXEC_NO_SECRETS, //!< Necessary CIB secrets are unavailable
320
321 // Add new values above here then update this one below
322 PCMK_EXEC_MAX = PCMK_EXEC_NO_SECRETS, //!< Maximum value for this enum
323 };
324
325 const char *pcmk_rc_name(int rc);
326 const char *pcmk_rc_str(int rc);
327 crm_exit_t pcmk_rc2exitc(int rc);
328 enum ocf_exitcode pcmk_rc2ocf(int rc);
329 int pcmk_rc2legacy(int rc);
330 int pcmk_legacy2rc(int legacy_rc);
331 const char *pcmk_strerror(int rc);
332 const char *pcmk_errorname(int rc);
333 const char *bz2_strerror(int rc);
334 crm_exit_t crm_errno2exit(int rc);
335 const char *crm_exit_name(crm_exit_t exit_code);
336 const char *crm_exit_str(crm_exit_t exit_code);
337 _Noreturn crm_exit_t crm_exit(crm_exit_t rc);
338
339 static inline const char *
340 pcmk_exec_status_str(enum pcmk_exec_status status)
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*/
341 {
342 switch (status) {
343 case PCMK_EXEC_PENDING: return "pending";
344 case PCMK_EXEC_DONE: return "complete";
345 case PCMK_EXEC_CANCELLED: return "Cancelled";
346 case PCMK_EXEC_TIMEOUT: return "Timed Out";
347 case PCMK_EXEC_NOT_SUPPORTED: return "NOT SUPPORTED";
348 case PCMK_EXEC_ERROR: return "Error";
349 case PCMK_EXEC_ERROR_HARD: return "Hard error";
350 case PCMK_EXEC_ERROR_FATAL: return "Fatal error";
351 case PCMK_EXEC_NOT_INSTALLED: return "Not installed";
352 case PCMK_EXEC_NOT_CONNECTED: return "Internal communication failure";
353 case PCMK_EXEC_INVALID: return "Cannot execute now";
354 case PCMK_EXEC_NO_FENCE_DEVICE: return "No fence device";
355 case PCMK_EXEC_NO_SECRETS: return "CIB secrets unavailable";
356 default: return "UNKNOWN!";
357 }
358 }
359
360 #ifdef __cplusplus
361 }
362 #endif
363
364 #endif
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*/