NAME

       capng_lock - lock the current process capabilities settings

SYNOPSIS

       #include <cap-ng.h>

       int capng_lock(void);

DESCRIPTION

       capng_lock  will  take  steps to prevent children of the current process to regain full privileges if the
       uid is 0. This should be called while possessing the CAP_SETPCAP capability in the kernel. This  function
       will do the following if permitted by the kernel: Set the NOROOT option on for PR_SET_SECUREBITS, set the
       NOROOT_LOCKED  option  to  on  for  PR_SET_SECUREBITS,  set  the   PR_NO_SETUID_FIXUP   option   on   for
       PR_SET_SECUREBITS, and set the PR_NO_SETUID_FIXUP_LOCKED option on for PR_SET_SECUREBITS.

RETURN VALUE

       This  returns  0  on  success  and  a  negative  number on failure. -1 means a failure setting any of the
       PR_SET_SECUREBITS options.

SEE ALSO

       capng_apply(3), prctl(2), capabilities(7)

AUTHOR

       Steve Grubb