MirOS Manual: mprotect(2)

MPROTECT(2)                BSD Programmer's Manual                 MPROTECT(2)


     mprotect - control the protection of pages


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

     mprotect(void *addr, size_t len, int prot);


     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 re-

     The protections (region accessibility) are specified in the prot argument
     by OR'ing the following values:

     PROT_EXEC   Pages may be executed.

     PROT_READ   Pages may be read.

     PROT_WRITE  Pages may be written.

     PROT_NONE   No permissions.


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


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


     The mprotect() function first appeared in 4.4BSD.

MirOS BSD #10-current            June 9, 1993                                1

Generated on 2017-04-03 16:26:17 by $MirOS: src/scripts/roff2htm,v 1.88 2017/01/29 00:51:06 tg Exp $

These manual pages and other documentation are copyrighted by their respective writers; their source is available at our CVSweb, AnonCVS, and other mirrors. The rest is Copyright © 2002–2017 The MirOS Project, Germany.
This product includes material provided by mirabilos.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report — diffs preferred.