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Import OpenSSL 1.1.0f

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Steve Dower
2017-09-07 16:27:43 -07:00
committed by Steve Dower
parent ccd3ab4aff
commit f4b81cb7c9
3340 changed files with 325158 additions and 557542 deletions
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35
doc/crypto/BIO_read.pod
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@@ -8,10 +8,10 @@ BIO_read, BIO_write, BIO_gets, BIO_puts - BIO I/O functions
#include <openssl/bio.h>
int BIO_read(BIO *b, void *buf, int len);
int BIO_gets(BIO *b, char *buf, int size);
int BIO_write(BIO *b, const void *buf, int len);
int BIO_puts(BIO *b, const char *buf);
int BIO_read(BIO *b, void *buf, int len);
int BIO_gets(BIO *b, char *buf, int size);
int BIO_write(BIO *b, const void *buf, int len);
int BIO_puts(BIO *b, const char *buf);
=head1 DESCRIPTION
@@ -20,20 +20,22 @@ the data in B<buf>.
BIO_gets() performs the BIOs "gets" operation and places the data
in B<buf>. Usually this operation will attempt to read a line of data
from the BIO of maximum length B<len>. There are exceptions to this
however, for example BIO_gets() on a digest BIO will calculate and
from the BIO of maximum length B<len-1>. There are exceptions to this,
however; for example, BIO_gets() on a digest BIO will calculate and
return the digest and other BIOs may not support BIO_gets() at all.
The returned string is always NUL-terminated.
BIO_write() attempts to write B<len> bytes from B<buf> to BIO B<b>.
BIO_puts() attempts to write a null terminated string B<buf> to BIO B<b>.
BIO_puts() attempts to write a NUL-terminated string B<buf> to BIO B<b>.
=head1 RETURN VALUES
All these functions return either the amount of data successfully read or
written (if the return value is positive) or that no data was successfully
read or written if the result is 0 or -1. If the return value is -2 then
the operation is not implemented in the specific BIO type.
the operation is not implemented in the specific BIO type. The trailing
NUL is not included in the length returned by BIO_gets().
=head1 NOTES
@@ -52,15 +54,24 @@ I/O structure and may block as a result. Instead select() (or equivalent)
should be combined with non blocking I/O so successive reads will request
a retry instead of blocking.
See L<BIO_should_retry(3)|BIO_should_retry(3)> for details of how to
See L<BIO_should_retry(3)> for details of how to
determine the cause of a retry and other I/O issues.
If the BIO_gets() function is not supported by a BIO then it possible to
work around this by adding a buffering BIO L<BIO_f_buffer(3)|BIO_f_buffer(3)>
work around this by adding a buffering BIO L<BIO_f_buffer(3)>
to the chain.
=head1 SEE ALSO
L<BIO_should_retry(3)|BIO_should_retry(3)>
L<BIO_should_retry(3)>
TBA
=head1 COPYRIGHT
Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut