mman.h(3HEAD)							      Headers							     mman.h(3HEAD)

NAME

       mman.h, mman - memory management declarations

SYNOPSIS

       #include <sys/mman.h>

DESCRIPTION

       The <sys/mman.h> header supports the following options:

	   o	  the Memory Mapped Files option

	   o	  the Shared Memory Objects option

	   o	  the Process Memory Locking option

	   o	  the Memory Protection option

	   o	  the Synchronized Input and Output option

       For Memory Mapped Files and Shared Memory Objects options, the following protection options are defined:

       PROT_READ     Page can be read.

       PROT_WRITE    Page can be written.

       PROT_EXEC     Page can be executed.

       PROT_NONE     Page cannot be accessed.

       The following flag options are defined:

       MAP_SHARED     Share changes.

       MAP_PRIVATE    Changes are private.

       MAP_FIXED      Interpret addr exactly.

       The flags immediately following are defined for msync(). See msync(3C).

       MS_ASYNC 	Perform asynchronous writes.

       MS_SYNC		Perform synchronous writes.

       MS_INVALIDATE	Invalidate mappings.

       The symbolic constants immediately following are defined for the mlockall() function. See mlockall(3C).

       MCL_CURRENT    Lock currently mapped pages.

       MCL_FUTURE     Lock pages that become mapped.

       The symbolic constant MAP_FAILED is defined to indicate a failure from the mmap() function. See mmap(2).

       The mode_t, off_t, and size_t types are be defined as described in <sys/types.h>. See types(3HEAD).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |Standard		     |See standards(5). 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mmap(2), mprotect(2), munmap(2), madvise(3C), mlock(3C), mlockall(3C), msync(3C), shm_open(3C), shm_unlink(3C), attributes(5), standards(5)

SunOS 5.11							    5 Feb 2008							     mman.h(3HEAD)