Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib/alarm-hup.c @ 1329:ae229b7acb4c HEAD

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Mailbox names are now sent through imap-quoter instead of just escaping it. This means that mailbox names that would require escapes are instead sent as literals now.
author Timo Sirainen <tss@iki.fi>
date Wed, 02 Apr 2003 05:05:38 +0300
parents c1f6c20cde9a
children 9df02b1533b3
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1 /*
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2 alarm-hup.c - Send SIGHUP once in a while to avoid infinitely blocking calls
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3
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4 Copyright (c) 2002 Timo Sirainen
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5
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6 Permission is hereby granted, free of charge, to any person obtaining
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7 a copy of this software and associated documentation files (the
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8 "Software"), to deal in the Software without restriction, including
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9 without limitation the rights to use, copy, modify, merge, publish,
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10 distribute, sublicense, and/or sell copies of the Software, and to
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11 permit persons to whom the Software is furnished to do so, subject to
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12 the following conditions:
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13
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14 The above copyright notice and this permission notice shall be
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15 included in all copies or substantial portions of the Software.
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16
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17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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18 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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19 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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20 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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21 CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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22 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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23 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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24 */
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25
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26 #include "lib.h"
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27 #include "alarm-hup.h"
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28
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29 #include <signal.h>
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30 #include <unistd.h>
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31 #include <stdlib.h>
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32
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33 static int initialized = FALSE;
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34 static unsigned int alarm_timeout = 30;
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35
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36 unsigned int alarm_hup_set_interval(unsigned int timeout)
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37 {
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38 unsigned int old;
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39
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40 old = alarm_timeout;
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41 alarm_timeout = timeout;
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42
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43 alarm(alarm_timeout);
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44 return old;
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45 }
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46
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47 static void sig_alarm(int signo __attr_unused__)
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48 {
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49 /* do it again */
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50 alarm(alarm_timeout);
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51 }
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52
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53 void alarm_hup_init(void)
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54 {
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55 struct sigaction act;
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56
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57 if (initialized)
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58 return;
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59 initialized = TRUE;
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60
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61 if (sigemptyset(&act.sa_mask) < 0)
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62 i_fatal("sigemptyset(): %m");
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63 act.sa_flags = 0;
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64 act.sa_handler = sig_alarm;
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65
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66 while (sigaction(SIGALRM, &act, NULL) < 0) {
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67 if (errno != EINTR)
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68 i_fatal("sigaction(): %m");
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69 }
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70
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71 alarm(alarm_timeout);
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72 }
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73
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74 void alarm_hup_deinit(void)
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75 {
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76 struct sigaction act;
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77
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78 if (!initialized)
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79 return;
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80 initialized = FALSE;
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81
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82 alarm(0);
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83
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84 if (sigemptyset(&act.sa_mask) < 0)
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85 i_fatal("sigemptyset(): %m");
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86 act.sa_flags = 0;
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87 act.sa_handler = SIG_DFL;
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88 while (sigaction(SIGALRM, &act, NULL) < 0) {
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89 if (errno != EINTR)
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90 i_fatal("sigaction(): %m");
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91 }
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92 }