NAME

getosreldate —

get the value of __FreeBSD_version

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <unistd.h>

int
getosreldate(void);

DESCRIPTION

The getosreldate() function returns an integer showing the version of the currently running FreeBSD kernel. Definitions of the values can be found in The Porter's Handbook:

https://www.FreeBSD.org/doc/en/books/porters-handbook/

RETURN VALUES

Upon successful completion, getosreldate() returns the value requested; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

ENVIRONMENT

OSVERSION: If the environment variable OSVERSION is set, it will override the getosreldate() return value.

EXAMPLES

An example can be found in /usr/share/examples/FreeBSD_version.

ERRORS

The getosreldate() function may fail and set errno for any of the errors specified for the library function sysctl(3).

HISTORY

The getosreldate() function appeared in FreeBSD 2.0.