MPROTECT(2)

NAME
mprotect - control the protection of pages

SYNOPSIS
mprotect(caddr_t addr, int len, int prot);

DESCRIPTION
The mprotect() system call changes the specified pages to have protection prot. Not all implementations will guarantee protection on a page basis; the granularity of protection changes may be as large as an entire region.

SEE ALSO
msync(2), munmap(2), madvise(2), mincore(2)

HISTORY
The mprotect() function first appeared in 4.4BSD.