PR_SET_MM_START_DATA(2const) PR_SET_MM_START_DATA(2const)
NAME
PR_SET_MM_START_DATA, PR_SET_MM_END_DATA - modify kernel memory map de-
scriptor 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_START_DATA, unsigned long addr, 0L, 0L);
int prctl(PR_SET_MM, PR_SET_MM_END_DATA, unsigned long addr, 0L, 0L);
DESCRIPTION
PR_SET_MM_START_DATA
Set the address above which initialized and uninitialized (bss)
data are placed. The corresponding memory area must be readable
and writable, but not executable or shareable.
PR_SET_MM_END_DATA
Set the address below which initialized and uninitialized (bss)
data are placed. The corresponding memory area must be readable
and writable, but not executable or shareable.
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and errno is set
to indicate the error.
ERRORS
EINVAL addr is greater than TASK_SIZE (the limit on the size of the user
address space for this architecture).
EINVAL The permissions of the corresponding memory area are not as re-
quired.
STANDARDS
Linux.
HISTORY
Linux 3.3.
SEE ALSO
prctl(2)
Linux man-pages 6.9.1 2024-06-01 PR_SET_MM_START_DATA(2const)
Generated by dwww version 1.16 on Tue Dec 9 23:38:38 CET 2025.