GETPAGESIZES(3) BSD Library Functions Manual GETPAGESIZES(3)NAMEgetpagesizes — get system page sizes
Standard C Library (libc, -lc)
getpagesizes(size_t pagesize, int nelem);
The getpagesizes() function retrieves page size information from the sys‐
tem. When it is called with pagesize specified as NULL and nelem speci‐
fied as 0, it returns the number of distinct page sizes that are sup‐
ported 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
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. Other‐
wise, it returns the value -1 and sets errno to indicate the error.
The getpagesizes() function will succeed unless:
[EINVAL] The pagesize argument is NULL and the nelem argument
[EINVAL] The nelem argument is less than zero.
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.
This manual page was written by Alan L. Cox ⟨firstname.lastname@example.org⟩.
BSD September 21, 2009 BSD