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.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32 .\" .\" Standard preamble: .\" ======================================================================== .de Sh \" Subsection heading .br .if t .Sp .ne 5 .PP \fB\\$1\fR .PP .. .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. | will give a .\" real vertical bar. \*(C+ will give a nicer C++. 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Calling \fIBIO_free()\fR may also have some effect on the underlying I/O structure, for example it may close the file being referred to under certain circumstances. For more details see the individual \&\s-1BIO_METHOD\s0 descriptions. .PP \&\fIBIO_free_all()\fR frees up an entire \s-1BIO\s0 chain, it does not halt if an error occurs freeing up an individual \s-1BIO\s0 in the chain. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fIBIO_new()\fR returns a newly created \s-1BIO\s0 or \s-1NULL\s0 if the call fails. .PP \&\fIBIO_set()\fR, \fIBIO_free()\fR return 1 for success and 0 for failure. .PP \&\fIBIO_free_all()\fR and \fIBIO_vfree()\fR do not return values. .SH "NOTES" .IX Header "NOTES" Some BIOs (such as memory BIOs) can be used immediately after calling \&\fIBIO_new()\fR. Others (such as file BIOs) need some additional initialization, and frequently a utility function exists to create and initialize such BIOs. .PP If \fIBIO_free()\fR is called on a \s-1BIO\s0 chain it will only free one \s-1BIO\s0 resulting in a memory leak. .PP Calling \fIBIO_free_all()\fR a single \s-1BIO\s0 has the same effect as calling \fIBIO_free()\fR on it other than the discarded return value. .PP Normally the \fBtype\fR argument is supplied by a function which returns a pointer to a \s-1BIO_METHOD\s0. There is a naming convention for such functions: a source/sink \s-1BIO\s0 is normally called BIO_s_*() and a filter \s-1BIO\s0 BIO_f_*(); .SH "EXAMPLE" .IX Header "EXAMPLE" Create a memory \s-1BIO:\s0 .PP .Vb 1 \& BIO *mem = BIO_new(BIO_s_mem()); .Ve .SH "SEE ALSO" .IX Header "SEE ALSO" \&\s-1TBA\s0