plucky (2) PR_SET_MM_START_BRK.2const.gz

NAME

       PR_SET_MM_START_BRK - 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_BRK, unsigned long addr, 0L, 0L);

DESCRIPTION

       Set the address above which the program heap can be expanded with brk(2) call.

       The  address  must  be greater than the ending address of the current program data segment.  In addition,
       the combined size of the resulting heap and the data segment can't exceed the RLIMIT_DATA resource  limit
       (see setrlimit(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).

       EINVAL addr is less than or equal to the end of the data segment or specifies a value  that  would  cause
              the RLIMIT_DATA resource limit to be exceeded.

STANDARDS

       Linux.

HISTORY

       Linux 3.3.

SEE ALSO

       prctl(2), PR_SET_MM(2const)