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getosreldate(3) [freebsd man page]

GETOSRELDATE(3) 					   BSD Library Functions Manual 					   GETOSRELDATE(3)

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 which is usually installed at /usr/share/doc/en_US.ISO8859-1/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). SEE ALSO
The Porter's Handbook, /usr/share/doc/en_US.ISO8859-1/books/porters-handbook/. HISTORY
The getosreldate() function appeared in FreeBSD 2.0. BSD
September 30, 2008 BSD

Check Out this Related Man Page

GETVFSBYNAME(3) 					   BSD Library Functions Manual 					   GETVFSBYNAME(3)

getvfsbyname -- get information about a filesystem LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <sys/param.h> #include <sys/mount.h> int getvfsbyname(const char *name, struct vfsconf *vfc); DESCRIPTION
The getvfsbyname() function provides access to information about a filesystem module that is configured in the kernel. If successful, the requested filesystem vfsconf is returned in the location pointed to by vfc. The fields in a ``struct vfsconf'' are defined as follows: vfc_name the name of the filesystem vfc_typenum the filesystem type number assigned by the kernel vfc_refcount the number of active mount points using the filesystem RETURN VALUES
The getvfsbyname() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error. ERRORS
The following errors may be reported: [EFAULT] The vfc pointer contains an invalid address. [ENOENT] The name specifies a filesystem that is unknown or not configured in the kernel. SEE ALSO
mount(2), sysctl(3), mount(8), sysctl(8) HISTORY
A variant of the getvfsbyname() function first appeared in FreeBSD 2.0. BSD
May 4, 1995 BSD

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