PR_SET_MM_MAP_SIZE

(2const)

modify kernel memory map descriptor fields

System callsmanpages-dev 6.9.1-1also documents PR_SET_MM_MAP

#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);

LIBRARY

Standard C library (libc, -lc)

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.