2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License, version 2 only,
7 * as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include <sys/types.h>
30 #include <common/defaults.h>
31 #include <common/error.h>
33 #include "sessiond-comm.h"
39 /* For Inet6 socket */
42 struct lttcomm_net_family net_families
[] = {
43 { LTTCOMM_INET
, lttcomm_create_inet_sock
},
44 { LTTCOMM_INET6
, lttcomm_create_inet6_sock
},
48 * Human readable error message.
50 static const char *lttcomm_readable_code
[] = {
51 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_COMMAND_SOCK_READY
) ] = "consumerd command socket ready",
52 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SUCCESS_RECV_FD
) ] = "consumerd success on receiving fds",
53 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_FD
) ] = "consumerd error on receiving fds",
54 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_ERROR_RECV_CMD
) ] = "consumerd error on receiving command",
55 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_ERROR
) ] = "consumerd error in polling thread",
56 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_NVAL
) ] = "consumerd polling on closed fd",
57 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_POLL_HUP
) ] = "consumerd all fd hung up",
58 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_SUCCESS
) ] = "consumerd exiting normally",
59 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_EXIT_FAILURE
) ] = "consumerd exiting on error",
60 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_OUTFD_ERROR
) ] = "consumerd error opening the tracefile",
61 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EBADF
) ] = "consumerd splice EBADF",
62 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_EINVAL
) ] = "consumerd splice EINVAL",
63 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ENOMEM
) ] = "consumerd splice ENOMEM",
64 [ LTTCOMM_ERR_INDEX(LTTCOMM_CONSUMERD_SPLICE_ESPIPE
) ] = "consumerd splice ESPIPE",
67 [ LTTCOMM_ERR_INDEX(LTTCOMM_NR
) ] = "Unknown error code"
71 * Return ptr to string representing a human readable error code from the
72 * lttcomm_return_code enum.
74 * These code MUST be negative in other to treat that as an error value.
76 const char *lttcomm_get_readable_code(enum lttcomm_return_code code
)
80 if (code
< LTTCOMM_CONSUMERD_COMMAND_SOCK_READY
&& code
> LTTCOMM_NR
) {
84 return lttcomm_readable_code
[LTTCOMM_ERR_INDEX(code
)];
88 * Create socket from an already allocated lttcomm socket structure and init
89 * sockaddr in the lttcomm sock.
91 int lttcomm_create_sock(struct lttcomm_sock
*sock
)
93 int ret
, _sock_type
, _sock_proto
, domain
;
97 domain
= sock
->sockaddr
.type
;
98 if (domain
!= LTTCOMM_INET
&& domain
!= LTTCOMM_INET6
) {
99 ERR("Create socket of unknown domain %d", domain
);
104 switch (sock
->proto
) {
105 case LTTCOMM_SOCK_UDP
:
106 _sock_type
= SOCK_DGRAM
;
107 _sock_proto
= IPPROTO_UDP
;
109 case LTTCOMM_SOCK_TCP
:
110 _sock_type
= SOCK_STREAM
;
111 _sock_proto
= IPPROTO_TCP
;
118 ret
= net_families
[domain
].create(sock
, _sock_type
, _sock_proto
);
128 * Return allocated lttcomm socket structure.
130 struct lttcomm_sock
*lttcomm_alloc_sock(enum lttcomm_sock_proto proto
)
132 struct lttcomm_sock
*sock
;
134 sock
= zmalloc(sizeof(struct lttcomm_sock
));
136 PERROR("zmalloc create sock");
148 * Return an allocated lttcomm socket structure and copy src content into
149 * the newly created socket.
151 * This is mostly useful when lttcomm_sock are passed between process where the
152 * fd and ops have to be changed within the correct address space.
154 struct lttcomm_sock
*lttcomm_alloc_copy_sock(struct lttcomm_sock
*src
)
156 struct lttcomm_sock
*sock
;
161 sock
= lttcomm_alloc_sock(src
->proto
);
166 lttcomm_copy_sock(sock
, src
);
173 * Create and copy socket from an allocated lttcomm socket structure.
175 * This is mostly useful when lttcomm_sock are passed between process where the
176 * fd and ops have to be changed within the correct address space.
178 void lttcomm_copy_sock(struct lttcomm_sock
*dst
, struct lttcomm_sock
*src
)
184 dst
->proto
= src
->proto
;
187 /* Copy sockaddr information from original socket */
188 memcpy(&dst
->sockaddr
, &src
->sockaddr
, sizeof(dst
->sockaddr
));
192 * Init IPv4 sockaddr structure.
194 int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr
*sockaddr
,
195 const char *ip
, unsigned int port
)
201 assert(port
> 0 && port
<= 65535);
203 memset(sockaddr
, 0, sizeof(struct lttcomm_sockaddr
));
205 sockaddr
->type
= LTTCOMM_INET
;
206 sockaddr
->addr
.sin
.sin_family
= AF_INET
;
207 sockaddr
->addr
.sin
.sin_port
= htons(port
);
208 ret
= inet_pton(sockaddr
->addr
.sin
.sin_family
, ip
,
209 &sockaddr
->addr
.sin
.sin_addr
);
212 ERR("%s with port %d: unrecognized IPv4 address", ip
, port
);
215 memset(sockaddr
->addr
.sin
.sin_zero
, 0, sizeof(sockaddr
->addr
.sin
.sin_zero
));
222 * Init IPv6 sockaddr structure.
224 int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr
*sockaddr
,
225 const char *ip
, unsigned int port
)
231 assert(port
> 0 && port
<= 65535);
233 memset(sockaddr
, 0, sizeof(struct lttcomm_sockaddr
));
235 sockaddr
->type
= LTTCOMM_INET6
;
236 sockaddr
->addr
.sin6
.sin6_family
= AF_INET6
;
237 sockaddr
->addr
.sin6
.sin6_port
= htons(port
);
238 ret
= inet_pton(sockaddr
->addr
.sin6
.sin6_family
, ip
,
239 &sockaddr
->addr
.sin6
.sin6_addr
);
250 * Return allocated lttcomm socket structure from lttng URI.
252 struct lttcomm_sock
*lttcomm_alloc_sock_from_uri(struct lttng_uri
*uri
)
256 struct lttcomm_sock
*sock
= NULL
;
261 /* Check URI protocol */
262 if (uri
->proto
== LTTNG_TCP
) {
263 _sock_proto
= LTTCOMM_SOCK_TCP
;
265 ERR("Relayd invalid URI proto: %d", uri
->proto
);
269 sock
= lttcomm_alloc_sock(_sock_proto
);
274 /* Check destination type */
275 if (uri
->dtype
== LTTNG_DST_IPV4
) {
276 ret
= lttcomm_init_inet_sockaddr(&sock
->sockaddr
, uri
->dst
.ipv4
,
281 } else if (uri
->dtype
== LTTNG_DST_IPV6
) {
282 ret
= lttcomm_init_inet6_sockaddr(&sock
->sockaddr
, uri
->dst
.ipv6
,
288 /* Command URI is invalid */
289 ERR("Relayd invalid URI dst type: %d", uri
->dtype
);
296 lttcomm_destroy_sock(sock
);
302 * Destroy and free lttcomm socket.
304 void lttcomm_destroy_sock(struct lttcomm_sock
*sock
)