freebsd-dev/lib/libposix1e/cap_set_proc.3

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.\" Copyright (c) 2000 Robert N. M. Watson
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.\" $FreeBSD$
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.\" TrustedBSD Project - support for POSIX.1e process capabilities 
.\"
.Dd April 1, 2000
.Dt CAP_SET_PROC 3
.Os FreeBSD
.Sh NAME
.Nm cap_set_proc
.Nd Set the Process Capability State
.Sh SYNOPSIS
.Fd #include <sys/types.h>
.Fd #include <sys/capability.h>
.Ft int
.Fn cap_set_proc "cap_t cap_p"
.Sh DESCRIPTION
The function
.Fn cap_set_proc
shall set the values for all capability flags for all capabilities defined
in the implementation with the capability state identified by
.Ar cap_p .
The new capability state of the process shall be completely determined by
the contents of
.Ar cap_p
upon successful return from this function.
If any flag in
.Ar cap_p
is set for any capability not currently permitted for the calling process,
the function shall fail, and the capability state of the process shall
remain unchanged.
.Sh IMPLEMENTATION NOTES
FreeBSD's support for POSIX.1e interfaces and features is still under
development at this time.
.Sh RETURN VALUES
Upon successful completion, this function shall return a value of zero.
Otherwise, a value of -1 shall be returned and
.Ar errno
shall be set to indicate the error.
Neither the state represented in the object identified by
.Ar cap_p
nor the capability state of the calling process shall be affected if the
return value is -1.
.Sh ERRORS
If any of the following conditions occur, the
.Fn cap_set_proc
function shall return -1 and set
.Ar errno
to the corresponding value:
.Bl -tag -width Er
.It Bq Er EINVAL
The value of the
.Ar cap_p
argument does not refer to a capability state in working storage.
.It Bq Er EPERM
The caller attempted to set a capability flag of a capability that was not
permitted to the invoking process.
.It Bq Er ENOMEM
This function requires more memory than is allowed by the hardware or
system-imposed memory management constraints.
.El
.Sh SEE ALSO
.Xr cap 3 ,
.Xr cap_get_proc 3 ,
.Xr posix1e 3
.Sh STANDARDS
POSIX.1e is described in IEEE POSIX.1e draft 17.  Discussion
of the draft continues on the cross-platform POSIX.1e implementation
mailing list.  To join this list, see the
.Fx
POSIX.1e implementation
page for more information.
.Sh HISTORY
Support for POSIX.1e Capabilities was developed as part of the TrustedBSD
Project.
POSIX.1e Capability support was introduced in
.Fx 5.0 ,
and development continues.
.Sh AUTHORS
.An Robert N M Watson
.Sh BUGS
While libposix1e is fully implemented, supporting kernel code is not
yet available in the base distribution.
It is slated for inclusion prior to 5.0-RELEASE.