[MAN] explicit_bzero

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EXPLICIT_BZERO

Section: Misc. Reference Manual Pages (3bsd)
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BSD mandoc
 

NAME

explicit_bzero - write zeroes to a byte string  

LIBRARY

Lb libbsd  

SYNOPSIS

In string.h (See libbsd(7) for include usage.) Ft void Fn explicit_bzero void *buf size_t len  

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.

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.  

SEE ALSO

bzero(3), memset(3), swab(3)  

HISTORY

The Fn explicit_bzero function first appeared in Ox 5.5 , glibc 2.25.

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Index

NAME

LIBRARY

SYNOPSIS

DESCRIPTION

SEE ALSO

HISTORY

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