6bc853268d9958162a7c1bea4d4ba7771f4c28d7
1 /* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License
5 * as published by the Free Software Foundation; either version 2
6 * of the License, or (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include <sys/socket.h>
26 #include <sys/types.h>
30 #include "liblttsessiondcomm.h"
33 * Human readable error message.
35 static const char *lttcomm_readable_code
[] = {
36 [ LTTCOMM_ERR_INDEX(LTTCOMM_OK
) ] = "Success",
37 [ LTTCOMM_ERR_INDEX(LTTCOMM_ERR
) ] = "Unknown error",
38 [ LTTCOMM_ERR_INDEX(LTTCOMM_UND
) ] = "Undefined command",
39 [ LTTCOMM_ERR_INDEX(LTTCOMM_NO_SESSION
) ] = "No session found",
40 [ LTTCOMM_ERR_INDEX(LTTCOMM_LIST_FAIL
) ] = "Unable to list traceable apps",
44 * lttcom_get_readable_code
46 * Return ptr to string representing a human readable
47 * error code from the lttcomm_return_code enum.
49 * These code MUST be negative in other to treat that
52 const char *lttcomm_get_readable_code(enum lttcomm_return_code code
)
56 if (tmp_code
>= LTTCOMM_OK
&& tmp_code
< LTTCOMM_NR
) {
57 return lttcomm_readable_code
[LTTCOMM_ERR_INDEX(tmp_code
)];
60 return "Unknown error code";
64 * lttcomm_connect_unix_sock
66 * Connect to unix socket using the path name.
68 int lttcomm_connect_unix_sock(const char *pathname
)
70 struct sockaddr_un sun
;
74 fd
= socket(PF_UNIX
, SOCK_STREAM
, 0);
80 memset(&sun
, 0, sizeof(sun
));
81 sun
.sun_family
= AF_UNIX
;
82 strncpy(sun
.sun_path
, pathname
, sizeof(sun
.sun_path
));
84 ret
= connect(fd
, (struct sockaddr
*) &sun
, sizeof(sun
));
97 * lttcomm_accept_unix_sock
99 * Do an accept(2) on the sock and return the
100 * new file descriptor. The socket MUST be bind(2) before.
102 int lttcomm_accept_unix_sock(int sock
)
105 struct sockaddr_un sun
;
109 new_fd
= accept(sock
, (struct sockaddr
*) &sun
, &len
);
122 * lttcomm_create_unix_sock
124 * Creates a AF_UNIX local socket using pathname
125 * bind the socket upon creation and return the fd.
127 int lttcomm_create_unix_sock(const char *pathname
)
129 struct sockaddr_un sun
;
133 /* Create server socket */
134 if ((fd
= socket(PF_UNIX
, SOCK_STREAM
, 0)) < 0) {
139 memset(&sun
, 0, sizeof(sun
));
140 sun
.sun_family
= AF_UNIX
;
141 strncpy(sun
.sun_path
, pathname
, strlen(pathname
));
143 ret
= bind(fd
, (struct sockaddr
*) &sun
, sizeof(sun
));
156 * lttcomm_listen_unix_sock
158 * Make the socket listen using MAX_LISTEN.
160 int lttcomm_listen_unix_sock(int sock
)
164 ret
= listen(sock
, MAX_LISTEN
);
173 * lttcomm_recv_unix_sock
175 * Receive data of size len in put that data into
176 * the buf param. Using recvmsg API.
177 * Return the size of received data.
179 ssize_t
lttcomm_recv_unix_sock(int sock
, void *buf
, size_t len
)
185 memset(&msg
, 0, sizeof(msg
));
187 iov
[0].iov_base
= buf
;
188 iov
[0].iov_len
= len
;
192 ret
= recvmsg(sock
, &msg
, 0);
201 * lttcomm_send_unix_sock
203 * Send buf data of size len. Using sendmsg API.
204 * Return the size of sent data.
206 ssize_t
lttcomm_send_unix_sock(int sock
, void *buf
, size_t len
)
212 memset(&msg
, 0, sizeof(msg
));
214 iov
[0].iov_base
= buf
;
215 iov
[0].iov_len
= len
;
219 ret
= sendmsg(sock
, &msg
, 0);
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