Mercurial > dovecot > core-2.2

annotate src/lib/failures.h @ 22664:fea53c2725c0

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director: Fix director_max_parallel_moves/kicks type Should be uint, not time.
author Timo Sirainen <timo.sirainen@dovecot.fi>
date Thu, 09 Nov 2017 12:24:16 +0200
parents 89c42f824f84
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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e4eb71ae8e96 Changed .h ifdef/defines to use <NAME>_H format.
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1 #ifndef FAILURES_H
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2 #define FAILURES_H
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3
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4 struct ip_addr;
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5
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6 /* Default exit status codes that we could use. */
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7 enum fatal_exit_status {
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8 FATAL_LOGOPEN = 80, /* Can't open log file */
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9 FATAL_LOGWRITE = 81, /* Can't write to log file */
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10 FATAL_LOGERROR = 82, /* Internal logging error */
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11 FATAL_OUTOFMEM = 83, /* Out of memory */
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12 FATAL_EXEC = 84, /* exec() failed */
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13
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14 FATAL_DEFAULT = 89
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15 };
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16
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17 enum log_type {
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18 LOG_TYPE_DEBUG,
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19 LOG_TYPE_INFO,
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20 LOG_TYPE_WARNING,
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21 LOG_TYPE_ERROR,
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22 LOG_TYPE_FATAL,
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23 LOG_TYPE_PANIC,
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24
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25 LOG_TYPE_COUNT,
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26 LOG_TYPE_OPTION
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27 };
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28
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29 struct failure_line {
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30 pid_t pid;
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31 enum log_type log_type;
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32 const char *text;
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33 };
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34
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35 struct failure_context {
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36 enum log_type type;
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37 int exit_status; /* for LOG_TYPE_FATAL */
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38 const struct tm *timestamp; /* NULL = use time() + localtime() */
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39 unsigned int timestamp_usecs;
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40 };
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41
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42 #define DEFAULT_FAILURE_STAMP_FORMAT "%b %d %H:%M:%S "
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43
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44 typedef void failure_callback_t(const struct failure_context *ctx,
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45 const char *format, va_list args);
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47 extern const char *failure_log_type_prefixes[];
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48 extern const char *failure_log_type_names[];
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49
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50 void i_log_type(const struct failure_context *ctx, const char *format, ...)
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51 ATTR_FORMAT(2, 3);
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52
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53 void i_panic(const char *format, ...) ATTR_FORMAT(1, 2) ATTR_NORETURN ATTR_COLD;
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54 void i_fatal(const char *format, ...) ATTR_FORMAT(1, 2) ATTR_NORETURN ATTR_COLD;
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55 void i_error(const char *format, ...) ATTR_FORMAT(1, 2) ATTR_COLD;
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56 void i_warning(const char *format, ...) ATTR_FORMAT(1, 2);
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57 void i_info(const char *format, ...) ATTR_FORMAT(1, 2);
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58 void i_debug(const char *format, ...) ATTR_FORMAT(1, 2);
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59
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60 void i_fatal_status(int status, const char *format, ...)
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61 ATTR_FORMAT(2, 3) ATTR_NORETURN ATTR_COLD;
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63 /* Change failure handlers. */
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64 #ifndef __cplusplus
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65 void i_set_fatal_handler(failure_callback_t *callback ATTR_NORETURN);
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66 #else
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67 /* Older g++ doesn't like attributes in parameters */
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68 void i_set_fatal_handler(failure_callback_t *callback);
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69 #endif
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70 void i_set_error_handler(failure_callback_t *callback);
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71 void i_set_info_handler(failure_callback_t *callback);
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72 void i_set_debug_handler(failure_callback_t *callback);
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73 void i_get_failure_handlers(failure_callback_t **fatal_callback_r,
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74 failure_callback_t **error_callback_r,
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75 failure_callback_t **info_callback_r,
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76 failure_callback_t **debug_callback_r);
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77
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78 /* Send failures to file. */
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79 void default_fatal_handler(const struct failure_context *ctx,
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80 const char *format, va_list args)
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81 ATTR_NORETURN ATTR_FORMAT(2, 0);
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82 void default_error_handler(const struct failure_context *ctx,
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83 const char *format, va_list args)
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84 ATTR_FORMAT(2, 0);
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85
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86 /* Send failures to syslog() */
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87 void i_syslog_fatal_handler(const struct failure_context *ctx,
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88 const char *format, va_list args)
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89 ATTR_NORETURN ATTR_FORMAT(2, 0);
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90 void i_syslog_error_handler(const struct failure_context *ctx,
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91 const char *format, va_list args)
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92 ATTR_FORMAT(2, 0);
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93
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94 /* Open syslog and set failure/info/debug handlers to use it. */
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95 void i_set_failure_syslog(const char *ident, int options, int facility);
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96
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97 /* Send failures to specified log file instead of stderr. */
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98 void i_set_failure_file(const char *path, const char *prefix);
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99
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100 /* Send errors to stderr using internal error protocol. */
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101 void i_set_failure_internal(void);
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102 /* If writing to log fails, ignore it instead of existing with
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103 FATAL_LOGWRITE or FATAL_LOGERROR. */
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104 void i_set_failure_ignore_errors(bool ignore);
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105
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106 /* Send informational messages to specified log file. i_set_failure_*()
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107 functions modify the info file too, so call this function after them. */
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108 void i_set_info_file(const char *path);
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109
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110 /* Send debug-level message to the given log file. The i_set_info_file()
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111 function modifies also the debug log file, so call this function after it. */
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112 void i_set_debug_file(const char *path);
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113
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114 /* Set the failure prefix. */
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115 void i_set_failure_prefix(const char *prefix_fmt, ...) ATTR_FORMAT(1, 2);
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116 /* Set prefix to "". */
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117 void i_unset_failure_prefix(void);
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118 /* Returns the current failure prefix (never NULL). */
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119 const char *i_get_failure_prefix(void);
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120 /* Prefix failures with a timestamp. fmt is in strftime() format. */
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121 void i_set_failure_timestamp_format(const char *fmt);
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122 /* When logging with internal error protocol, update the process's current
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123 IP address / log prefix by sending it to log process. This is mainly used to
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124 improve the error message if the process crashes. */
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125 void i_set_failure_send_ip(const struct ip_addr *ip);
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126 void i_set_failure_send_prefix(const char *prefix);
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127
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128 /* Call the callback before exit()ing. The callback may update the status. */
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129 void i_set_failure_exit_callback(void (*callback)(int *status));
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130 /* Call the exit callback and exit() */
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131 void failure_exit(int status) ATTR_NORETURN ATTR_COLD;
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132
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133 /* Parse a line logged using internal failure handler */
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134 void i_failure_parse_line(const char *line, struct failure_line *failure);
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135
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136 void failures_deinit(void);
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137
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138 #endif