Name

mprotect - control the protection of pages

Synopsis

#include <sys/types.h>
#include <sys/mman.h>

int
mprotect(caddr_t addr, size_t 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.

Return Values

Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error.

See Also

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

History

The mprotect() function first appeared in 4.4BSD.

Table of Contents

• Name
• Synopsis
• Description
• Return Values
• See Also
• History