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
|
/*
* Copyright © 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3,
* as published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Daniel van Vugt <daniel.van.vugt@canonical.com>
*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
static void appendenv(const char* varname, const char* append)
{
char buf[1024] = "";
const char* value = append;
const char* old = getenv(varname);
if (old != NULL)
{
snprintf(buf, sizeof(buf)-1, "%s:%s", old, append);
buf[sizeof(buf)-1] = '\0';
value = buf;
}
setenv(varname, value, 1);
}
int main(int argc, char** argv)
{
char path[1024], *dest = path, *dest_max = path+sizeof(path)-1;
char *pivot = path;
size_t pivot_max = 0;
const char *src = argv[0], *name = argv[0];
(void)argc;
while (*src && dest < dest_max)
{
*dest = *src;
if (*dest == '/')
{
pivot = dest + 1;
name = src + 1;
}
++src;
++dest;
}
pivot_max = dest_max - pivot;
strncpy(pivot, "../lib/client-modules/", pivot_max);
*dest_max = '\0';
setenv("MIR_CLIENT_PLATFORM_PATH", path, 1);
printf("MIR_CLIENT_PLATFORM_PATH=%s\n", path);
strncpy(pivot+7, "server-modules/", pivot_max-7);
setenv("MIR_SERVER_PLATFORM_PATH", path, 1);
printf("MIR_SERVER_PLATFORM_PATH=%s\n", path);
pivot[6] = '\0'; /* truncate lib/client-modules to just lib */
appendenv("LD_LIBRARY_PATH", path);
printf("LD_LIBRARY_PATH=%s\n", getenv("LD_LIBRARY_PATH"));
snprintf(pivot, pivot_max, EXECUTABLE_FORMAT, name);
*dest_max = '\0';
printf("exec=%s\n", path);
argv[0] = path;
execv(argv[0], argv);
fprintf(stderr, "Failed to execute: %s\n", path);
return 1;
}
|