c3-lang/libbsd/man/explicit_bzero.3bsd

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• Hash : 21f4052c
  Author :
  Date : 2019-06-13T23:36:09
  

  man: Add doc-str-Lb-libbsd aliases for str-Lb-libbsd
  
  groff(1) has changed the internal layout for the .Lb doc strings, but to
  preserve backwards compatibility we cannot simply rename them, we need
  to create new aliases so that these will work with old and new macros.
  
  Signed-off-by: Guillem Jover <guillem@hadrons.org>
  

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• man/explicit_bzero.3bsd

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  .\"	$OpenBSD: bzero.3,v 1.10 2014/01/22 21:06:45 tedu Exp $
  .\"
  .Dd $Mdocdate: January 22 2014 $
  .Dt EXPLICIT_BZERO 3bsd
  .Os
  .Sh NAME
  .Nm explicit_bzero
  .Nd write zeroes to a byte string
  .Sh LIBRARY
  .ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
  .ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
  .Lb libbsd
  .Sh SYNOPSIS
  .In string.h
  (See
  .Xr libbsd 7
  for include usage.)
  .Ft void
  .Fn explicit_bzero "void *buf" "size_t len"
  .Sh DESCRIPTION
  The
  .Fn explicit_bzero
  function writes
  .Fa len
  zero bytes to the string
  .Fa buf .
  If
  .Fa len
  is zero,
  .Fn explicit_bzero
  does nothing.
  .Pp
  The
  .Fn explicit_bzero
  variant behaves the same as the
  .Fn bzero
  function, but will not be removed by a compiler's dead store optimization
  pass, making it useful for clearing sensitive memory such as a password.
  .Sh SEE ALSO
  .Xr bzero 3 ,
  .Xr memset 3 ,
  .Xr swab 3
  .Sh HISTORY
  The
  .Fn explicit_bzero
  function first appeared in
  .Ox 5.5 ,
  glibc 2.25.
  

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