PR_SET_MM_START_CODE(2const)                      PR_SET_MM_START_CODE(2const)

NAME
       PR_SET_MM_START_CODE, PR_SET_MM_END_CODE - 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_START_CODE, unsigned long addr, 0L, 0L);
       int prctl(PR_SET_MM, PR_SET_MM_END_CODE, unsigned long addr, 0L, 0L);

DESCRIPTION
       PR_SET_MM_START_CODE
              Set the address above which the program text can run.  The
              corresponding memory area must be readable and executable, but
              not writable or shareable (see mprotect(2) and mmap(2) for more
              information).

       PR_SET_MM_END_CODE
              Set the address below which the program text can run.  The
              corresponding memory area must be readable and executable, but
              not writable 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
              required.

STANDARDS
       Linux.

HISTORY
       Linux 3.3.

SEE ALSO
       prctl(2)

Linux man-pages 6.9.1             2024-06-01      PR_SET_MM_START_CODE(2const)