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 static 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 __attribute__((visibility("hidden")))
77 const char *lttcomm_get_readable_code(enum lttcomm_return_code code
)
81 if (code
< LTTCOMM_CONSUMERD_COMMAND_SOCK_READY
&& code
> LTTCOMM_NR
) {
85 return lttcomm_readable_code
[LTTCOMM_ERR_INDEX(code
)];
89 * Create socket from an already allocated lttcomm socket structure and init
90 * sockaddr in the lttcomm sock.
92 __attribute__((visibility("hidden")))
93 int lttcomm_create_sock(struct lttcomm_sock
*sock
)
95 int ret
, _sock_type
, _sock_proto
, domain
;
99 domain
= sock
->sockaddr
.type
;
100 if (domain
!= LTTCOMM_INET
&& domain
!= LTTCOMM_INET6
) {
101 ERR("Create socket of unknown domain %d", domain
);
106 switch (sock
->proto
) {
107 case LTTCOMM_SOCK_UDP
:
108 _sock_type
= SOCK_DGRAM
;
109 _sock_proto
= IPPROTO_UDP
;
111 case LTTCOMM_SOCK_TCP
:
112 _sock_type
= SOCK_STREAM
;
113 _sock_proto
= IPPROTO_TCP
;
120 ret
= net_families
[domain
].create(sock
, _sock_type
, _sock_proto
);
130 * Return allocated lttcomm socket structure.
132 __attribute__((visibility("hidden")))
133 struct lttcomm_sock
*lttcomm_alloc_sock(enum lttcomm_sock_proto proto
)
135 struct lttcomm_sock
*sock
;
137 sock
= zmalloc(sizeof(struct lttcomm_sock
));
139 PERROR("zmalloc create sock");
151 * Return an allocated lttcomm socket structure and copy src content into
152 * the newly created socket.
154 * This is mostly useful when lttcomm_sock are passed between process where the
155 * fd and ops have to be changed within the correct address space.
157 __attribute__((visibility("hidden")))
158 struct lttcomm_sock
*lttcomm_alloc_copy_sock(struct lttcomm_sock
*src
)
160 struct lttcomm_sock
*sock
;
165 sock
= lttcomm_alloc_sock(src
->proto
);
170 lttcomm_copy_sock(sock
, src
);
177 * Create and copy socket from an allocated lttcomm socket structure.
179 * This is mostly useful when lttcomm_sock are passed between process where the
180 * fd and ops have to be changed within the correct address space.
182 __attribute__((visibility("hidden")))
183 void lttcomm_copy_sock(struct lttcomm_sock
*dst
, struct lttcomm_sock
*src
)
189 dst
->proto
= src
->proto
;
192 /* Copy sockaddr information from original socket */
193 memcpy(&dst
->sockaddr
, &src
->sockaddr
, sizeof(dst
->sockaddr
));
197 * Init IPv4 sockaddr structure.
199 __attribute__((visibility("hidden")))
200 int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr
*sockaddr
,
201 const char *ip
, unsigned int port
)
207 assert(port
> 0 && port
<= 65535);
209 memset(sockaddr
, 0, sizeof(struct lttcomm_sockaddr
));
211 sockaddr
->type
= LTTCOMM_INET
;
212 sockaddr
->addr
.sin
.sin_family
= AF_INET
;
213 sockaddr
->addr
.sin
.sin_port
= htons(port
);
214 ret
= inet_pton(sockaddr
->addr
.sin
.sin_family
, ip
,
215 &sockaddr
->addr
.sin
.sin_addr
);
218 ERR("%s with port %d: unrecognized IPv4 address", ip
, port
);
221 memset(sockaddr
->addr
.sin
.sin_zero
, 0, sizeof(sockaddr
->addr
.sin
.sin_zero
));
228 * Init IPv6 sockaddr structure.
230 __attribute__((visibility("hidden")))
231 int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr
*sockaddr
,
232 const char *ip
, unsigned int port
)
238 assert(port
> 0 && port
<= 65535);
240 memset(sockaddr
, 0, sizeof(struct lttcomm_sockaddr
));
242 sockaddr
->type
= LTTCOMM_INET6
;
243 sockaddr
->addr
.sin6
.sin6_family
= AF_INET6
;
244 sockaddr
->addr
.sin6
.sin6_port
= htons(port
);
245 ret
= inet_pton(sockaddr
->addr
.sin6
.sin6_family
, ip
,
246 &sockaddr
->addr
.sin6
.sin6_addr
);
257 * Return allocated lttcomm socket structure from lttng URI.
259 __attribute__((visibility("hidden")))
260 struct lttcomm_sock
*lttcomm_alloc_sock_from_uri(struct lttng_uri
*uri
)
264 struct lttcomm_sock
*sock
= NULL
;
269 /* Check URI protocol */
270 if (uri
->proto
== LTTNG_TCP
) {
271 _sock_proto
= LTTCOMM_SOCK_TCP
;
273 ERR("Relayd invalid URI proto: %d", uri
->proto
);
277 sock
= lttcomm_alloc_sock(_sock_proto
);
282 /* Check destination type */
283 if (uri
->dtype
== LTTNG_DST_IPV4
) {
284 ret
= lttcomm_init_inet_sockaddr(&sock
->sockaddr
, uri
->dst
.ipv4
,
289 } else if (uri
->dtype
== LTTNG_DST_IPV6
) {
290 ret
= lttcomm_init_inet6_sockaddr(&sock
->sockaddr
, uri
->dst
.ipv6
,
296 /* Command URI is invalid */
297 ERR("Relayd invalid URI dst type: %d", uri
->dtype
);
304 lttcomm_destroy_sock(sock
);
310 * Destroy and free lttcomm socket.
312 __attribute__((visibility("hidden")))
313 void lttcomm_destroy_sock(struct lttcomm_sock
*sock
)