mirror of
https://github.com/opnsense/src.git
synced 2026-04-21 22:27:47 -04:00
87 lines
2.9 KiB
Groff
87 lines
2.9 KiB
Groff
.\" Copyright (c) 2020 Ryan Moeller <freqlabs@FreeBSD.org>
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.Dd September 29, 2022
|
|
.Dt CAP_NETDB 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cap_getprotobyname ,
|
|
.Nd "library for getting network proto entry in capability mode"
|
|
.Sh LIBRARY
|
|
.Lb libcap_netdb
|
|
.Sh SYNOPSIS
|
|
.In sys/nv.h
|
|
.In libcasper.h
|
|
.In casper/cap_netdb.h
|
|
.Ft "struct protoent *"
|
|
.Fn cap_getprotobyname "const cap_channel_t *chan" "const char *name"
|
|
.Sh DESCRIPTION
|
|
The function
|
|
.Fn cap_getprotobyname
|
|
is equivalent to
|
|
.Xr getprotobyname 3
|
|
except that the connection to the
|
|
.Nm system.netdb
|
|
service needs to be provided.
|
|
.Sh EXAMPLES
|
|
The following example first opens a capability to casper and then uses this
|
|
capability to create the
|
|
.Nm system.netdb
|
|
casper service and uses it to look up a protocol by name.
|
|
.Bd -literal
|
|
cap_channel_t *capcas, *capnetdb;
|
|
struct protoent *ent;
|
|
|
|
/* Open capability to Casper. */
|
|
capcas = cap_init();
|
|
if (capcas == NULL)
|
|
err(1, "Unable to contact Casper");
|
|
|
|
/* Enter capability mode sandbox. */
|
|
if (caph_enter() < 0)
|
|
err(1, "Unable to enter capability mode");
|
|
|
|
/* Use Casper capability to create capability to the system.netdb service. */
|
|
capnetdb = cap_service_open(capcas, "system.netdb");
|
|
if (capnetdb == NULL)
|
|
err(1, "Unable to open system.netdb service");
|
|
|
|
/* Close Casper capability, we don't need it anymore. */
|
|
cap_close(capcas);
|
|
|
|
ent = cap_getprotobyname(capnetdb, "http");
|
|
if (ent == NULL)
|
|
errx(1, "cap_getprotobyname failed to find http proto");
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr cap_enter 2 ,
|
|
.Xr caph_enter 3 ,
|
|
.Xr err 3 ,
|
|
.Xr getprotobyname 3 ,
|
|
.Xr capsicum 4 ,
|
|
.Xr nv 9
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm cap_netdb
|
|
service was implemented by
|
|
.An Ryan Moeller Aq Mt freqlabs@FreeBSD.org .
|