NAME

       PR_SET_MM_MAP, PR_SET_MM_MAP_SIZE - modify kernel memory map descriptor fields

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_SET_MM, PR_SET_MM_MAP,
                 struct prctl_mm_map *map, unsigned long size, 0L);
       int prctl(PR_SET_MM, PR_SET_MM_MAP_SIZE, unsigned int *size, 0L, 0L);

DESCRIPTION

       PR_SET_MM_MAP
              Provides  one-shot access to all the addresses modifyable with PR_SET_MM(2const) by
              passing in a  struct  prctl_mm_map  (as  defined  in  <linux/prctl.h>).   The  size
              argument should provide the size of the struct.

       PR_SET_MM_MAP_SIZE
              Returns  (via  the  size  argument)  the size of the struct prctl_mm_map the kernel
              expects.  This allows user space to find a compatible struct.

       These   features   are   available   only   if   the   kernel   is    built    with    the
       CONFIG_CHECKPOINT_RESTORE option enabled.

RETURN VALUE

       On  success,  0  is  returned.  On error, -1 is returned, and errno is set to indicate the
       error.

ERRORS

       EINVAL The third argument is an invalid address.

STANDARDS

       Linux.

HISTORY

       Linux 3.18.

SEE ALSO

       prctl(2),  PR_SET_MM(2const),  PR_SET_MM_START_CODE(2const),   PR_SET_MM_END_CODE(2const),
       PR_SET_MM_START_DATA(2const),  PR_SET_MM_END_DATA(2const),  PR_SET_MM_START_STACK(2const),
       PR_SET_MM_START_BRK(2const),      PR_SET_MM_BRK(2const),      PR_SET_MM_ARG_START(2const),
       PR_SET_MM_ARG_END(2const),     PR_SET_MM_ENV_START(2const),     PR_SET_MM_ENV_END(2const),
       PR_SET_MM_EXE_FILE(2const)