Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/master/child-process.c @ 9348:3eacb6bbd227 HEAD

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Added pop3_save_uidl setting. When UIDLs are sent to client, save them to dovecot-uidlist. This allows changing pop3_uidl_format without messages getting re-downloaded. It's also useful with virtual POP3 INBOX when UIDLs are based on IMAP UIDs that may not be as stable as in non-virtual INBOX.
author Timo Sirainen <tss@iki.fi>
date Mon, 31 Aug 2009 18:53:17 -0400
parents 366a327b028b
children 00cd9aacd03c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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b9faf4db2a9f Updated copyright notices to include year 2009.
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1 /* Copyright (c) 2002-2009 Dovecot authors, see the included COPYING file */
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2
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3 #include "common.h"
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4 #include "lib-signals.h"
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5 #include "hash.h"
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6 #include "str.h"
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7 #include "env-util.h"
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8 #include "syslog-util.h"
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9 #include "child-process.h"
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10
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11 #include <unistd.h>
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12 #include <syslog.h>
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13 #include <sys/wait.h>
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14
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15 const char *process_names[PROCESS_TYPE_MAX] = {
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16 "unknown",
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17 "auth",
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18 "auth-worker",
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19 "login",
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20 "imap",
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21 "pop3",
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22 "ssl-build-param",
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23 "dict"
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24 };
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25
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26 struct hash_table *processes;
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27 static child_process_destroy_callback_t *destroy_callbacks[PROCESS_TYPE_MAX];
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28
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29 struct child_process *child_process_lookup(pid_t pid)
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30 {
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31 return hash_table_lookup(processes, POINTER_CAST(pid));
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32 }
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33
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34 void child_process_add(pid_t pid, struct child_process *process)
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35 {
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36 hash_table_insert(processes, POINTER_CAST(pid), process);
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37 }
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38
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39 void child_process_remove(pid_t pid)
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40 {
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41 hash_table_remove(processes, POINTER_CAST(pid));
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42 }
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43
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44 void child_process_init_env(void)
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45 {
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46 int facility;
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47
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48 /* remove all environment, we don't need them */
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49 env_clean();
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50
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51 /* we'll log through master process */
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52 env_put("LOG_TO_MASTER=1");
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53 if (env_tz != NULL)
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54 env_put(t_strconcat("TZ=", env_tz, NULL));
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55
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56 if (settings_root == NULL ||
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57 !syslog_facility_find(settings_root->defaults->syslog_facility,
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58 &facility))
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59 facility = LOG_MAIL;
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60 env_put(t_strdup_printf("SYSLOG_FACILITY=%d", facility));
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61
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62 if (settings_root != NULL && !settings_root->defaults->version_ignore)
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63 env_put("DOVECOT_VERSION="PACKAGE_VERSION);
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64 #ifdef DEBUG
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65 if (gdb) env_put("GDB=1");
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66 #endif
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67 }
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68
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69 void client_process_exec(const char *cmd, const char *title)
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70 {
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71 const char **argv;
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72
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73 /* very simple argument splitting. */
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74 if (*title == '\0')
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75 argv = t_strsplit(cmd, " ");
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76 else
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77 argv = t_strsplit(t_strconcat(cmd, " ", title, NULL), " ");
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78
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79 client_process_exec_argv(argv[0], argv);
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80 }
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81
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82 void client_process_exec_argv(const char *executable, const char **argv)
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83 {
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84 const char *p;
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85
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86 /* hide the path, it's ugly */
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87 p = strrchr(argv[0], '/');
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88 if (p != NULL) argv[0] = p+1;
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89
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90 (void)execv(executable, (char **)argv);
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91 i_fatal_status(errno == ENOMEM ? FATAL_OUTOFMEM : FATAL_EXEC,
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92 "execv(%s) failed: %m", executable);
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93 }
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94
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95 static const char *get_exit_status_message(enum fatal_exit_status status,
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96 enum process_type process_type)
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97 {
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98 switch (status) {
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99 case FATAL_LOGOPEN:
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100 return "Can't open log file";
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101 case FATAL_LOGWRITE:
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102 return "Can't write to log file";
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103 case FATAL_LOGERROR:
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104 return "Internal logging error";
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105 case FATAL_OUTOFMEM:
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106 switch (process_type) {
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107 case PROCESS_TYPE_AUTH:
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108 case PROCESS_TYPE_AUTH_WORKER:
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109 return "Out of memory - see auth_process_size setting";
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110 case PROCESS_TYPE_LOGIN:
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111 return "Out of memory - see login_process_size setting";
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112 case PROCESS_TYPE_IMAP:
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113 case PROCESS_TYPE_POP3:
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114 return "Out of memory - see mail_process_size setting";
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115 case PROCESS_TYPE_UNKNOWN:
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116 case PROCESS_TYPE_SSL_PARAM:
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117 case PROCESS_TYPE_DICT:
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118 case PROCESS_TYPE_MAX:
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119 break;
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120 }
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121 return "Out of memory";
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122 case FATAL_EXEC:
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123 return "exec() failed";
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124
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125 case FATAL_DEFAULT:
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126 return "Fatal failure";
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127 }
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
128
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
129 return NULL;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
130 }
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
131
8798
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
132 static void
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
133 log_coredump(string_t *str, enum process_type process_type, int status)
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
134 {
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
135 #ifdef WCOREDUMP
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
136 int signum = WTERMSIG(status);
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
137
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
138 if (WCOREDUMP(status)) {
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
139 str_append(str, " (core dumped)");
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
140 return;
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
141 }
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
142
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
143 if (signum != SIGABRT && signum != SIGSEGV && signum != SIGBUS)
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
144 return;
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
145
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
146 /* let's try to figure out why we didn't get a core dump */
8823
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
147 if (core_dumps_disabled) {
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
148 str_printfa(str, " (core dumps disabled)");
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
149 return;
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
150 }
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
151
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
152 switch (process_type) {
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
153 case PROCESS_TYPE_LOGIN:
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
154 #ifdef HAVE_PR_SET_DUMPABLE
8822
978010934c02 If login process core dumps, suggest using -D parameter.
Timo Sirainen <tss@iki.fi>
parents: 8798
diff changeset
155 str_append(str, " (core not dumped - add -D to login_executable)");
8823
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
156 return;
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
157 #else
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
158 break;
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
159 #endif
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
160 case PROCESS_TYPE_IMAP:
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
161 case PROCESS_TYPE_POP3:
8798
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
162 #ifndef HAVE_PR_SET_DUMPABLE
8823
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
163 if (!settings_root->defaults->mail_drop_priv_before_exec) {
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
164 str_append(str, " (core not dumped - set mail_drop_priv_before_exec=yes)");
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
165 return;
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
166 }
8861
9d00503821d6 mail_privileged_group setting prevents core dumps - mention it in logging.
Timo Sirainen <tss@iki.fi>
parents: 8823
diff changeset
167 if (*settings_root->defaults->mail_privileged_group != '\0') {
9d00503821d6 mail_privileged_group setting prevents core dumps - mention it in logging.
Timo Sirainen <tss@iki.fi>
parents: 8823
diff changeset
168 str_append(str, " (core not dumped - mail_privileged_group prevented it)");
9d00503821d6 mail_privileged_group setting prevents core dumps - mention it in logging.
Timo Sirainen <tss@iki.fi>
parents: 8823
diff changeset
169 return;
9d00503821d6 mail_privileged_group setting prevents core dumps - mention it in logging.
Timo Sirainen <tss@iki.fi>
parents: 8823
diff changeset
170 }
8798
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
171 #endif
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
172 str_append(str, " (core not dumped - is home dir set?)");
8823
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
173 return;
8889
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
174 case PROCESS_TYPE_AUTH:
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
175 case PROCESS_TYPE_AUTH_WORKER:
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
176 if (settings_root->auths->uid == 0)
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
177 break;
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
178 #ifdef HAVE_PR_SET_DUMPABLE
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
179 str_printfa(str, " (core not dumped - "
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
180 "no permissions for auth user %s in %s?)",
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
181 settings_root->auths->user,
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
182 settings_root->defaults->base_dir);
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
183 #else
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
184 str_append(str, " (core not dumped - auth user is not root)");
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
185 #endif
c5cb1f27caea Try to make sure auth process can dump core, and if it can't try to find why.
Timo Sirainen <tss@iki.fi>
parents: 8882
diff changeset
186 return;
8823
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
187 default:
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
188 break;
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
189 }
fa0775526cf4 master: Fixes to core dump log message writing.
Timo Sirainen <tss@iki.fi>
parents: 8822
diff changeset
190 str_append(str, " (core not dumped)");
8798
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
191 #endif
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
192 }
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
193
8882
9f3968f49ceb lib-signals: Changed callback API to return siginfo_t.
Timo Sirainen <tss@iki.fi>
parents: 8861
diff changeset
194 static void sigchld_handler(const siginfo_t *si ATTR_UNUSED,
6411
6a64e64fa3a3 Renamed __attr_*__ to ATTR_*. Renamed __attrs_used__ to ATTRS_DEFINED.
Timo Sirainen <tss@iki.fi>
parents: 5846
diff changeset
195 void *context ATTR_UNUSED)
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
196 {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
197 struct child_process *process;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
198 const char *process_type_name, *msg;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
199 enum process_type process_type;
8628
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
200 string_t *str;
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
201 pid_t pid;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
202 int status;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
203 bool abnormal_exit;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
204
8628
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
205 str = t_str_new(128);
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
206 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
207 /* get the type and remove from hash */
8628
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
208 str_truncate(str, 0);
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
209 process = child_process_lookup(pid);
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
210 if (process == NULL)
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
211 process_type = PROCESS_TYPE_UNKNOWN;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
212 else {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
213 process_type = process->type;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
214 child_process_remove(pid);
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
215 }
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
216 abnormal_exit = TRUE;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
217
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
218 /* write errors to syslog */
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
219 process_type_name = process_names[process_type];
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
220 if (WIFEXITED(status)) {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
221 status = WEXITSTATUS(status);
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
222 if (status == 0) {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
223 abnormal_exit = FALSE;
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
224 if (process_type == PROCESS_TYPE_UNKNOWN) {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
225 i_error("unknown child %s exited "
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
226 "successfully", dec2str(pid));
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
227 }
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
228 } else if (status == 1 &&
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
229 process_type == PROCESS_TYPE_SSL_PARAM) {
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
230 /* kludgy. hide this failure. */
6542
402d14b5ef8b If child process logged a fatal failure, don't show "returned error 89"
Timo Sirainen <tss@iki.fi>
parents: 6429
diff changeset
231 } else if (status == FATAL_DEFAULT &&
402d14b5ef8b If child process logged a fatal failure, don't show "returned error 89"
Timo Sirainen <tss@iki.fi>
parents: 6429
diff changeset
232 process->seen_fatal) {
402d14b5ef8b If child process logged a fatal failure, don't show "returned error 89"
Timo Sirainen <tss@iki.fi>
parents: 6429
diff changeset
233 /* the error was already logged. */
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
234 } else {
8223
66ecd60b7ea2 If a process dies because it's out of memory, mention *_process_size setting in the error message.
Timo Sirainen <tss@iki.fi>
parents: 7334
diff changeset
235 msg = get_exit_status_message(status,
66ecd60b7ea2 If a process dies because it's out of memory, mention *_process_size setting in the error message.
Timo Sirainen <tss@iki.fi>
parents: 7334
diff changeset
236 process_type);
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
237 msg = msg == NULL ? "" :
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
238 t_strconcat(" (", msg, ")", NULL);
8628
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
239 str_printfa(str,
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
240 "child %s (%s) returned error %d%s",
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
241 dec2str(pid), process_type_name,
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
242 status, msg);
5843
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
243 }
f655c4d4a419 Moved child process handling to child-process.[ch]. The hash table now uses
Timo Sirainen <tss@iki.fi>
parents:
diff changeset
244 } else if (WIFSIGNALED(status)) {
8628
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
245 str_printfa(str, "child %s (%s) killed with signal %d",
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
246 dec2str(pid), process_type_name,
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
247 WTERMSIG(status));
8798
c9381a0fdc5e Improved logging for core dumping. With Linux use PR_SET_DUMPABLE for imap/pop3.
Timo Sirainen <tss@iki.fi>
parents: 8735
diff changeset
248 log_coredump(str, process_type, status);
8628
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
249 }
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
250
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
251 if (str_len(str) > 0) {
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
252 if (process != NULL && process->ip.family != 0) {
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
253 if (!process->ip_changed)
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
254 str_append(str, " (ip=");
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
255 else
e85c7cb22ad7 If login process crashes, log the IP address that (maybe) caused it.
Timo Sirainen <tss@iki.fi>
parents: 8590
diff changeset
256 str_append(str, " (latest ip=");
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257 str_printfa(str, "%s)",
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258 net_ip2addr(&process->ip));
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259 }
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260 i_error("%s", str_c(str));
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261 }
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262
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263 if (destroy_callbacks[process_type] != NULL) {
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264 destroy_callbacks[process_type](process, pid,
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265 abnormal_exit);
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266 }
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267 }
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268
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269 if (pid == -1 && errno != EINTR && errno != ECHILD)
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270 i_warning("waitpid() failed: %m");
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271 }
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272
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273 void child_process_set_destroy_callback(enum process_type type,
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274 child_process_destroy_callback_t *cb)
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275 {
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276 i_assert(type < PROCESS_TYPE_MAX);
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277
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278 destroy_callbacks[type] = cb;
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279 }
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280
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281 void child_processes_init(void)
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282 {
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283 processes = hash_table_create(default_pool, default_pool, 128, NULL, NULL);
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284 lib_signals_set_handler(SIGCHLD, TRUE, sigchld_handler, NULL);
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285 }
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286
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287 void child_processes_flush(void)
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288 {
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289 /* make sure we log if child processes died unexpectedly */
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290 sigchld_handler(NULL, NULL);
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291 }
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292
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293 void child_processes_deinit(void)
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294 {
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295 child_processes_flush();
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296 lib_signals_unset_handler(SIGCHLD, sigchld_handler, NULL);
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297 hash_table_destroy(&processes);
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298 }