1 .\" Copyright (c) 2020 Ryan Moeller <freqlabs@FreeBSD.org>
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26 .Dd September 29, 2022
30 .Nm cap_getprotobyname ,
31 .Nd "library for getting network proto entry in capability mode"
37 .In casper/cap_netdb.h
38 .Ft "struct protoent *"
39 .Fn cap_getprotobyname "const cap_channel_t *chan" "const char *name"
42 .Fn cap_getprotobyname
45 except that the connection to the
47 service needs to be provided.
49 The following example first opens a capability to casper and then uses this
50 capability to create the
52 casper service and uses it to look up a protocol by name.
54 cap_channel_t *capcas, *capnetdb;
57 /* Open capability to Casper. */
60 err(1, "Unable to contact Casper");
62 /* Enter capability mode sandbox. */
64 err(1, "Unable to enter capability mode");
66 /* Use Casper capability to create capability to the system.netdb service. */
67 capnetdb = cap_service_open(capcas, "system.netdb");
69 err(1, "Unable to open system.netdb service");
71 /* Close Casper capability, we don't need it anymore. */
74 ent = cap_getprotobyname(capnetdb, "http");
76 errx(1, "cap_getprotobyname failed to find http proto");
82 .Xr getprotobyname 3 ,
88 service was implemented by
89 .An Ryan Moeller Aq Mt freqlabs@FreeBSD.org .