mman(5)                                                             mman(5)

NAME
     mman - memory management declarations

SYNOPSIS
     #include <sys/mman.h>

DESCRIPTION
     The following protection options are defined:

     PROTREAD           Page can be read.

     PROTWRITE          Page can be written.

     PROTEXEC           Page can be executed.

     PROTNONE           Page can not be accessed.

     The following flag options are defined:

     MAPSHARED          Share changes.

     MAPPRIVATE         Changes are private.

     MAPFIXED           Interpret addr exactly.

     The following flags are defined for msync():

     MSASYNC            Perform asynchronous writes.

     MSSYNC             Perform synchronous writes.

     MSINVALIDATE       Invalidate mappings.

     The sizet and offt types are defined as described in <sys/types.h>.

     The following are declared in <sys/mman.h> as functions and may also
     be defined as macros:

     void *mmap(void *addr, sizet len, int prot, int flags, int fd,
                offt off);
     int   mprotect(void *addr, sizet len, int prot);
     int   msync(void * addr, sizet len, int flags);
     int   munmap(void *addr, sizet len);

     The following is declared as a function and may also be defined as a
     macro:

     void *mmap64(void *addr, sizet len, int prot, int flags,
                  int fd, off64t offset);

SEE ALSO
     mmap(2), mprotect(2), munmap(2), msync(3C), lfs(5).



Page 1                       Reliant UNIX 5.44                Printed 11/98