ERR_print_errors.3ossl 3.4 KB

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  57. .IX Title "ERR_PRINT_ERRORS 3ossl"
  58. .TH ERR_PRINT_ERRORS 3ossl 2025-01-17 3.4.0 OpenSSL
  59. .\" For nroff, turn off justification. Always turn off hyphenation; it makes
  60. .\" way too many mistakes in technical documents.
  61. .if n .ad l
  62. .nh
  63. .SH NAME
  64. ERR_print_errors, ERR_print_errors_fp, ERR_print_errors_cb
  65. \&\- print error messages
  66. .SH SYNOPSIS
  67. .IX Header "SYNOPSIS"
  68. .Vb 1
  69. \& #include <openssl/err.h>
  70. \&
  71. \& void ERR_print_errors(BIO *bp);
  72. \& void ERR_print_errors_fp(FILE *fp);
  73. \& void ERR_print_errors_cb(int (*cb)(const char *str, size_t len, void *u),
  74. \& void *u);
  75. .Ve
  76. .SH DESCRIPTION
  77. .IX Header "DESCRIPTION"
  78. \&\fBERR_print_errors()\fR is a convenience function that prints the error
  79. strings for all errors that OpenSSL has recorded to \fBbp\fR, thus
  80. emptying the error queue.
  81. .PP
  82. \&\fBERR_print_errors_fp()\fR is the same, except that the output goes to a
  83. \&\fBFILE\fR.
  84. .PP
  85. \&\fBERR_print_errors_cb()\fR is the same, except that the callback function,
  86. \&\fBcb\fR, is called for each error line with the string, length, and userdata
  87. \&\fBu\fR as the callback parameters.
  88. .PP
  89. The error strings will have the following format:
  90. .PP
  91. .Vb 1
  92. \& [pid]:error:[error code]:[library name]:[function name]:[reason string]:[filename]:[line]:[optional text message]
  93. .Ve
  94. .PP
  95. \&\fIerror code\fR is an 8 digit hexadecimal number. \fIlibrary name\fR,
  96. \&\fIfunction name\fR and \fIreason string\fR are ASCII text, as is \fIoptional
  97. text message\fR if one was set for the respective error code.
  98. .PP
  99. If there is no text string registered for the given error code,
  100. the error string will contain the numeric code.
  101. .SH "RETURN VALUES"
  102. .IX Header "RETURN VALUES"
  103. \&\fBERR_print_errors()\fR and \fBERR_print_errors_fp()\fR return no values.
  104. .SH "SEE ALSO"
  105. .IX Header "SEE ALSO"
  106. \&\fBERR_error_string\fR\|(3),
  107. \&\fBERR_get_error\fR\|(3)
  108. .SH COPYRIGHT
  109. .IX Header "COPYRIGHT"
  110. Copyright 2000\-2020 The OpenSSL Project Authors. All Rights Reserved.
  111. .PP
  112. Licensed under the Apache License 2.0 (the "License"). You may not use
  113. this file except in compliance with the License. You can obtain a copy
  114. in the file LICENSE in the source distribution or at
  115. <https://www.openssl.org/source/license.html>.