GETPAGESIZES(3)        FreeBSD Library Functions Manual        GETPAGESIZES(3)

NAME
     getpagesizes - get system page sizes

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/mman.h>

     int
     getpagesizes(size_t pagesize[], int nelem);

DESCRIPTION
     The getpagesizes() function retrieves page size information from the
     system.  When it is called with pagesize specified as NULL and nelem
     specified as 0, it returns the number of distinct page sizes that are
     supported by the system.  Otherwise, it assigns up to nelem of the
     system-supported page sizes to consecutive elements of the array
     referenced by pagesize.  These page sizes are expressed in bytes.  In
     this case, getpagesizes() returns the number of such page sizes that it
     assigned to the array.

RETURN VALUES
     If successful, the getpagesizes() function returns either the number of
     page sizes that are supported by the system or the number of supported
     page sizes that it assigned to the array referenced by pagesize.
     Otherwise, it returns the value -1 and sets errno to indicate the error.

ERRORS
     The getpagesizes() function will succeed unless:

     [EINVAL]           The pagesize argument is NULL and the nelem argument
                        is non-zero.

     [EINVAL]           The nelem argument is less than zero.

SEE ALSO
     getpagesize(3)

HISTORY
     The getpagesizes() function first appeared in Solaris 9.  This manual
     page was written in conjunction with a new but compatible implementation
     that was first released in FreeBSD 7.3.

AUTHORS
     This manual page was written by Alan L. Cox <alc@cs.rice.edu>.

FreeBSD 13.1-RELEASE-p6       September 21, 2009       FreeBSD 13.1-RELEASE-p6