redhat man page for capset

CAPGET(2)						     Linux Programmer's Manual							 CAPGET(2)

NAME
       capget, capset - set/get process capabilities

SYNOPSIS
       #undef _POSIX_SOURCE
       #include <sys/capability.h>

       int capget(cap_user_header_t header, cap_user_data_t data);

       int capset(cap_user_header_t header, const cap_user_data_t data);

DESCRIPTION
       These two functions are the raw kernel interface for getting and setting capabilities.  The kernel API is likely to change and use of these
       functions (in particular the format of the cap_user_*_t types) is subject to change with each kernel revision.

       These system calls are specific to Linux.  The portable interfaces are cap_set_proc(3) and cap_get_proc(3).

RETURN VALUE
       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS
       EINVAL One of the arguments was invalid.

       EPERM  An attempt was made to add a capability to the Permitted set, or to set a capability in the Effective or Inheritable  sets  that	is
	      not in the Permitted set.

Linux 2.1							   17th May 1998							 CAPGET(2)