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
|
/*
* OO wrapper for execve
*
* Copyright (C) 2003 Enrico Zini <enrico@debian.org>
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <wibble/sys/exec.h>
#include <string.h> // strdup
#include <unistd.h> // execve
#include <malloc.h> // alloca on win32 seems to live there
#include <iostream>
extern char **environ;
namespace wibble {
namespace sys {
int Exec::main()
{
try {
exec();
} catch (std::exception& e) {
std::cerr << e.what() << std::endl;
}
return 0;
}
void Exec::importEnv()
{
for (char** s = environ; *s; ++s)
env.push_back(*s);
}
void Exec::spawnChild()
{
#ifdef _WIN32
std::string cmd = pathname;
for ( int i = 1; i < args.size(); ++i )
cmd += " \"" + args[i] + "\""; // FIXME: quoting...
std::cerr << "CreateProcess: " << cmd << std::endl;
CreateProcess( NULL, (char*)cmd.c_str(), NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi );
#endif
}
void Exec::exec()
{
// Prepare the argument list
char** exec_args = new char*[args.size() + 1];
for (size_t i = 0; i < args.size(); ++i)
exec_args[i] = strdup(args[i].c_str());
exec_args[args.size()] = 0;
char** exec_env = environ;
if (!envFromParent)
{
// Prepare the custom environment
exec_env = new char*[env.size() + 1];
for (size_t i = 0; i < env.size(); ++i)
// We can just store a pointer to the internal strings, since later
// we're calling exec and no destructors will be called
exec_env[i] = strdup(env[i].c_str());
exec_env[env.size()] = 0;
}
if (searchInPath)
{
if (execvpe(pathname.c_str(), exec_args, exec_env) == -1)
throw wibble::exception::System("trying to run " + pathname);
} else {
if (execve(pathname.c_str(), exec_args, exec_env) == -1)
throw wibble::exception::System("trying to run " + pathname);
}
delete[] exec_args;
if (exec_env != environ) delete[] exec_env;
throw wibble::exception::Consistency(
"trying to run " + pathname,
"Program flow continued after successful exec()");
}
}
}
// vim:set ts=4 sw=4:
|
