shell.c
1.22 KB
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
/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "mail.h"
/*
* sh[ell]
*/
int
mail_shell (int argc, char **argv)
{
if (argc > 1)
return 1;
else
{
int pid = fork ();
if (pid == 0)
{
free (argv[0]);
/*
argv[0] = getenv ("SHELL");
if (!argv[0])
*/
argv[0] = strdup ("/bin/sh");
execv ("/bin/sh", argv);
return 1;
}
else if (pid > 0)
{
while (waitpid(pid, NULL, 0) == -1)
/* do nothing */;
return 0;
}
}
return 1;
}