debian man page for mmap_private

mmap_private(3) 					     Library Functions Manual						   mmap_private(3)

NAME
       mmap_private - memory map a file for reading and writing

SYNTAX
       #include <mmap.h>

       char* mmap_private(const char* filename,size_t* filesize);

DESCRIPTION
       mmap_private  opens  filename  for  reading and writing, maps the whole file into memory, closes the file, writes the length of the file to
       filesize and returns a pointer to the mapped file.

       The file is mapped copy-on-write.  Changes done to the mapped region will not be written to disk.

       The file is unmapped by the operating system if the process  terminates.   It  can  also  be  manually  unmapped  by  calling  munmap  from
       <sys/mman.h>.

       If the file could not be opened or mapped, (void*)0 is returned.

SEE ALSO
       mmap_unmap(3)

																   mmap_private(3)