<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="generator" content="rustdoc"> <meta name="description" content="API documentation for the Rust `BIO` struct in crate `openssl_sys`."> <meta name="keywords" content="rust, rustlang, rust-lang, BIO"> <title>openssl_sys::BIO - Rust</title> <link rel="stylesheet" type="text/css" href="../rustdoc.css"> <link rel="stylesheet" type="text/css" href="../main.css"> </head> <body class="rustdoc"> <!--[if lte IE 8]> <div class="warning"> This old browser is unsupported and will most likely display funky things. </div> <![endif]--> <nav class="sidebar"> <p class='location'><a href='index.html'>openssl_sys</a></p><script>window.sidebarCurrent = {name: 'BIO', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script> </nav> <nav class="sub"> <form class="search-form js-only"> <div class="search-container"> <input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"> </div> </form> </nav> <section id='main' class="content struct"> <h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>openssl_sys</a>::<wbr><a class='struct' href=''>BIO</a></span><span class='out-of-band'><span id='render-detail'> <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs"> [<span class='inner'>−</span>] </a> </span><a id='src-154' class='srclink' href='../src/openssl_sys/lib.rs.html#161-183' title='goto source code'>[src]</a></span></h1> <pre class='rust struct'>pub struct BIO { pub method: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO_METHOD.html' title='openssl_sys::BIO_METHOD'>BIO_METHOD</a>, pub callback: <a class='enum' href='https://doc.rust-lang.org/nightly/core/option/enum.Option.html' title='core::option::Option'>Option</a><unsafe extern fn(<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO.html' title='openssl_sys::BIO'>BIO</a>, <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*const </a><a class='type' href='../libc/unix/notbsd/linux/other/b64/x86_64/type.c_char.html' title='libc::unix::notbsd::linux::other::b64::x86_64::c_char'>c_char</a>, <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_long.html' title='libc::unix::notbsd::linux::other::b64::c_long'>c_long</a>, <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_long.html' title='libc::unix::notbsd::linux::other::b64::c_long'>c_long</a>) -> <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_long.html' title='libc::unix::notbsd::linux::other::b64::c_long'>c_long</a>>, pub cb_arg: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='type' href='../libc/unix/notbsd/linux/other/b64/x86_64/type.c_char.html' title='libc::unix::notbsd::linux::other::b64::x86_64::c_char'>c_char</a>, pub init: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, pub shutdown: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, pub flags: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, pub retry_reason: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, pub num: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, pub ptr: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='enum' href='../libc/enum.c_void.html' title='libc::c_void'>c_void</a>, pub next_bio: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO.html' title='openssl_sys::BIO'>BIO</a>, pub prev_bio: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO.html' title='openssl_sys::BIO'>BIO</a>, pub references: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, pub num_read: <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_ulong.html' title='libc::unix::notbsd::linux::other::b64::c_ulong'>c_ulong</a>, pub num_write: <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_ulong.html' title='libc::unix::notbsd::linux::other::b64::c_ulong'>c_ulong</a>, pub ex_data: <a class='struct' href='../openssl_sys/struct.CRYPTO_EX_DATA.html' title='openssl_sys::CRYPTO_EX_DATA'>CRYPTO_EX_DATA</a>, }</pre><h2 class='fields'>Fields</h2><span id='structfield.method' class='structfield'><code>method: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO_METHOD.html' title='openssl_sys::BIO_METHOD'>BIO_METHOD</a></code> </span><span class='stab '></span><span id='structfield.callback' class='structfield'><code>callback: <a class='enum' href='https://doc.rust-lang.org/nightly/core/option/enum.Option.html' title='core::option::Option'>Option</a><unsafe extern fn(<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO.html' title='openssl_sys::BIO'>BIO</a>, <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*const </a><a class='type' href='../libc/unix/notbsd/linux/other/b64/x86_64/type.c_char.html' title='libc::unix::notbsd::linux::other::b64::x86_64::c_char'>c_char</a>, <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a>, <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_long.html' title='libc::unix::notbsd::linux::other::b64::c_long'>c_long</a>, <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_long.html' title='libc::unix::notbsd::linux::other::b64::c_long'>c_long</a>) -> <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_long.html' title='libc::unix::notbsd::linux::other::b64::c_long'>c_long</a>></code> </span><span class='stab '></span><span id='structfield.cb_arg' class='structfield'><code>cb_arg: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='type' href='../libc/unix/notbsd/linux/other/b64/x86_64/type.c_char.html' title='libc::unix::notbsd::linux::other::b64::x86_64::c_char'>c_char</a></code> </span><span class='stab '></span><span id='structfield.init' class='structfield'><code>init: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a></code> </span><span class='stab '></span><span id='structfield.shutdown' class='structfield'><code>shutdown: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a></code> </span><span class='stab '></span><span id='structfield.flags' class='structfield'><code>flags: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a></code> </span><span class='stab '></span><span id='structfield.retry_reason' class='structfield'><code>retry_reason: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a></code> </span><span class='stab '></span><span id='structfield.num' class='structfield'><code>num: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a></code> </span><span class='stab '></span><span id='structfield.ptr' class='structfield'><code>ptr: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='enum' href='../libc/enum.c_void.html' title='libc::c_void'>c_void</a></code> </span><span class='stab '></span><span id='structfield.next_bio' class='structfield'><code>next_bio: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO.html' title='openssl_sys::BIO'>BIO</a></code> </span><span class='stab '></span><span id='structfield.prev_bio' class='structfield'><code>prev_bio: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.pointer.html'>*mut </a><a class='struct' href='../openssl_sys/struct.BIO.html' title='openssl_sys::BIO'>BIO</a></code> </span><span class='stab '></span><span id='structfield.references' class='structfield'><code>references: <a class='type' href='../libc/type.c_int.html' title='libc::c_int'>c_int</a></code> </span><span class='stab '></span><span id='structfield.num_read' class='structfield'><code>num_read: <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_ulong.html' title='libc::unix::notbsd::linux::other::b64::c_ulong'>c_ulong</a></code> </span><span class='stab '></span><span id='structfield.num_write' class='structfield'><code>num_write: <a class='type' href='../libc/unix/notbsd/linux/other/b64/type.c_ulong.html' title='libc::unix::notbsd::linux::other::b64::c_ulong'>c_ulong</a></code> </span><span class='stab '></span><span id='structfield.ex_data' class='structfield'><code>ex_data: <a class='struct' href='../openssl_sys/struct.CRYPTO_EX_DATA.html' title='openssl_sys::CRYPTO_EX_DATA'>CRYPTO_EX_DATA</a></code> </span><span class='stab '></span></section> <section id='search' class="content hidden"></section> <section class="footer"></section> <aside id="help" class="hidden"> <div> <h1 class="hidden">Help</h1> <div class="shortcuts"> <h2>Keyboard Shortcuts</h2> <dl> <dt>?</dt> <dd>Show this help dialog</dd> 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