plucky (2) PR_SET_MM_MAP_SIZE.2const.gz

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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)