1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* telepathy-ring.c - Telepathy-ring connection manager
*
* Copyright (C) 2007-2010 Nokia Corporation
* @author Pekka Pessi <first.surname@nokia.com>
*
* This work is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This work is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#define DEBUG_FLAG RING_DEBUG_CONNECTION
#include "ring-debug.h"
#include "ring-connection-manager.h"
#include <telepathy-glib/run.h>
#include <stdlib.h>
#include <sched.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/resource.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#if HAVE_LIBMLOCKNICE
#include <mlocknice.h>
#endif
static TpBaseConnectionManager *
telepathy_ring_connection_manager_new(void)
{
return (TpBaseConnectionManager *)
g_object_new(RING_TYPE_CONNECTION_MANAGER, NULL);
}
char *
readfile(char *file)
{
int fd = open(file, O_RDONLY);
char buffer[1024];
ssize_t n;
size_t ws, nws;
if (fd == -1)
return NULL;
n = read(fd, buffer, (sizeof buffer) - 1);
close(fd);
if (n < 0)
return NULL;
buffer[n] = '\0';
ws = strspn(buffer, " \t\v\r\n");
nws = strcspn(buffer + ws, " \t\v\r\n");
buffer[ws + nws] = '\0';
return g_strdup(buffer + ws);
}
#define STATEDIR "/var/lib/telepathy-ring/"
int
main (int argc, char** argv)
{
ring_debug_set_flags_from_env();
char const *ring_realtime = getenv("RING_REALTIME");
if (!ring_realtime)
ring_realtime = readfile(STATEDIR "realtime");
if (ring_realtime) {
struct sched_param sp = {
.sched_priority = strtoul(ring_realtime, NULL, 0)
};
int priority_min = sched_get_priority_min(SCHED_FIFO);
if (sp.sched_priority < priority_min)
sp.sched_priority = priority_min;
int priority_max = sched_get_priority_max(SCHED_FIFO);
if (sp.sched_priority > priority_max)
sp.sched_priority = priority_max;
if (sched_setscheduler(0, SCHED_FIFO, &sp) < 0)
DEBUG("sched_setscheduler(RING_REALTIME=%s): %s",
ring_realtime, strerror(errno));
}
char const *ring_memlock = getenv("RING_MEMLOCK");
if (!ring_memlock)
ring_memlock = readfile(STATEDIR "memlock");
if (ring_memlock) {
struct rlimit rl[1];
char *rest = NULL;
rlim_t rlim = strtoul(ring_memlock, &rest, 0);
switch (*rest) {
case 'g': case 'G': rlim *= 1024;
/* FALLTHROUGH */
case 'm': case 'M': rlim *= 1024;
/* FALLTHROUGH */
case 'k': case 'K': rlim *= 1024;
}
if (rlim == 0)
rlim = 1024 * 1024 * 256;
rl->rlim_cur = rlim;
rl->rlim_max = rlim;
if (setrlimit(RLIMIT_MEMLOCK, rl) < 0) {
DEBUG("setrlimit(): %s", strerror(errno));
ring_memlock = NULL;
}
}
/* Drop privileges */
#if HAVE_GETRESUID
{
uid_t ruid, euid, suid;
if (getresuid(&ruid, &euid, &suid) == -1)
DEBUG("%s(): %s", "getresuid", strerror(errno));
else if (ruid == euid && ruid == suid)
;
else if (setresuid(ruid, ruid, ruid) == -1) {
DEBUG("%s(): %s", "setresuid", strerror(errno));
exit(2);
}
}
#else
{
uid_t ruid = getuid();
if (ruid != geteuid())
if (setreuid(ruid, ruid) == -1) {
DEBUG("%s(): %s", "setreuid", strerror(errno));
exit(2);
}
}
#endif
if (ring_memlock) {
if (mlockall(MCL_FUTURE) < 0)
DEBUG("mlockall(): %s", strerror(errno));
#if HAVE_LIBMLOCKNICE
else if (mln_lock_data() < 0)
DEBUG("mln_lock_data(): %s", strerror(errno));
#endif
}
return tp_run_connection_manager(
"telepathy-ring", PACKAGE_VERSION,
telepathy_ring_connection_manager_new,
argc, argv);
}
|
