NAME¶

PR_SET_MM_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_BRK, unsigned long addr, 0L, 0L);

DESCRIPTION¶

Set the current brk(2) value.

The requirements for the address are the same as for the PR_SET_MM_START_BRK option.

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), PR_SET_MM_START_BRK(2const)