PR_SET_KEEPCAPS(2const)

NAME

PR_SET_KEEPCAPS - set the state of the "keep capabilities" flag

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#include <linux/prctl.h>  /* Definition of PR_* constants */
#include <sys/prctl.h>

int prctl(PR_SET_KEEPCAPS, long state);

DESCRIPTION

Set the state of the calling thread's "keep capabilities" flag. The effect of this flag is described in capabilities(7). state must be either 0L (clear the flag) or 1L (set the flag). The "keep capabilities" value will be reset to 0 on subsequent calls to execve(2).

RETURN VALUE

On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.

ERRORS

EINVAL: state is not a valid value.
EPERM: The caller's SECBIT_KEEP_CAPS_LOCKED flag is set (see capabilities(7)).

STANDARDS

Linux.

HISTORY

Linux 2.2.18.