Commit | Line | Data |
---|---|---|
bb863844 MJ |
1 | /* |
2 | * SPDX-License-Identifier: LGPL-2.1-only | |
3 | * | |
4 | * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca> | |
5 | * Copyright (C) 2011-2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
6 | */ | |
7 | ||
8 | #include <lttng/ust-error.h> | |
9 | ||
10 | #define CODE_OFFSET(code) \ | |
11 | (code == LTTNG_UST_OK ? 0 : (code - LTTNG_UST_ERR + 1)) | |
12 | ||
13 | /* | |
14 | * Human readable error message. | |
15 | */ | |
16 | static const char *ustcomm_readable_code[] = { | |
17 | [ CODE_OFFSET(LTTNG_UST_OK) ] = "Success", | |
18 | [ CODE_OFFSET(LTTNG_UST_ERR) ] = "Unknown error", | |
19 | [ CODE_OFFSET(LTTNG_UST_ERR_NOENT) ] = "No entry", | |
20 | [ CODE_OFFSET(LTTNG_UST_ERR_EXIST) ] = "Object already exists", | |
21 | [ CODE_OFFSET(LTTNG_UST_ERR_INVAL) ] = "Invalid argument", | |
22 | [ CODE_OFFSET(LTTNG_UST_ERR_PERM) ] = "Permission denied", | |
23 | [ CODE_OFFSET(LTTNG_UST_ERR_NOSYS) ] = "Not implemented", | |
24 | [ CODE_OFFSET(LTTNG_UST_ERR_EXITING) ] = "Process is exiting", | |
25 | ||
26 | [ CODE_OFFSET(LTTNG_UST_ERR_INVAL_MAGIC) ] = "Invalid magic number", | |
27 | [ CODE_OFFSET(LTTNG_UST_ERR_INVAL_SOCKET_TYPE) ] = "Invalid socket type", | |
28 | [ CODE_OFFSET(LTTNG_UST_ERR_UNSUP_MAJOR) ] = "Unsupported major version", | |
29 | [ CODE_OFFSET(LTTNG_UST_ERR_PEERCRED) ] = "Cannot get unix socket peer credentials", | |
30 | [ CODE_OFFSET(LTTNG_UST_ERR_PEERCRED_PID) ] = "Peer credentials PID is invalid. Socket appears to belong to a distinct, non-nested pid namespace.", | |
31 | }; | |
32 | ||
33 | /* | |
34 | * lttng_ust_strerror | |
35 | * @code: must be a negative value of enum lttng_ust_error_code (or 0). | |
36 | * | |
37 | * Returns a ptr to a string representing a human readable error code from the | |
38 | * ustcomm_return_code enum. | |
39 | */ | |
40 | const char *lttng_ust_strerror(int code) | |
41 | { | |
42 | code = -code; | |
43 | ||
44 | if (code < LTTNG_UST_OK || code >= LTTNG_UST_ERR_NR) | |
45 | code = LTTNG_UST_ERR; | |
46 | ||
47 | return ustcomm_readable_code[CODE_OFFSET(code)]; | |
48 | } |