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GETMAXPARTITIONS(3) Library Functions Manual GETMAXPARTITIONS(3)

getmaxpartitions
get the maximum number of partitions allowed per disk

#include <util.h>
int
getmaxpartitions(void);

getmaxpartitions() returns the number of partitions that are allowed per disk on the system.

getrawpartition(3), sysctl(2)

The getmaxpartitions function call appeared in NetBSD 1.2.
January 12, 2018 OpenBSD-current