signal.c
1.67 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
52
53
54
55
56
57
58
59
60
61
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002, 2007 Free Software Foundation, Inc.
GNU Mailutils 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 3, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA */
#define __USE_MISC
#include "imap4d.h"
RETSIGTYPE
imap4d_sigchld (int signo)
{
pid_t pid;
int status;
while ((pid = waitpid (-1, &status, WNOHANG)) > 0)
--children;
#ifndef HAVE_SIGACTION
/* On some system, signal implements the unreliable semantic and
has to be rearm. */
signal (signo, imap4d_sigchld);
#endif
}
/* Default signal handler to call the imap4d_bye() function */
RETSIGTYPE
imap4d_signal (int signo)
{
mu_diag_output (MU_DIAG_CRIT, _("Got signal %s"), strsignal (signo));
/* Master process. */
if (util_is_master ())
{
mu_diag_output (MU_DIAG_CRIT, _("MASTER: exiting on signal"));
exit (1); /* abort(); */
}
switch (signo)
{
case SIGALRM:
imap4d_bye (ERR_TIMEOUT);
case SIGPIPE:
imap4d_bye (ERR_NO_OFILE);
default:
imap4d_bye (ERR_SIGNAL);
}
}