PR_SET_MM_ARG_START(2const)                        PR_SET_MM_ARG_START(2const)

NAME
       PR_SET_MM_ARG_START, PR_SET_MM_ARG_END, PR_SET_MM_ENV_START,
       PR_SET_MM_ENV_END - 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_ARG_START, unsigned long addr, 0L, 0L);
       int prctl(PR_SET_MM, PR_SET_MM_ARG_END, unsigned long addr, 0L, 0L);
       int prctl(PR_SET_MM, PR_SET_MM_ENV_START, unsigned long addr, 0L, 0L);
       int prctl(PR_SET_MM, PR_SET_MM_ENV_END, unsigned long addr, 0L, 0L);

DESCRIPTION
       PR_SET_MM_ARG_START
              Set the address above which the program command line is placed.

       PR_SET_MM_ARG_END
              Set the address below which the program command line is placed.

       PR_SET_MM_ENV_START
              Set the address above which the program environment is placed.

       PR_SET_MM_ENV_END
              Set the address below which the program environment is placed.

       The address passed with these calls should belong to a process stack
       area.  Thus, the corresponding memory area must be readable, writable,
       and (depending on the kernel configuration) have the MAP_GROWSDOWN
       attribute set (see mmap(2)).

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).

STANDARDS
       Linux.

HISTORY
       Linux 3.5.

SEE ALSO
       prctl(2), PR_SET_MM(2const)

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