Mercurial > hg > nginx
annotate src/os/unix/ngx_process.c @ 7162:8b84d60ef13d
Fixed "changing binary" when reaper is not init.
On some systems, it's possible that reaper of orphaned processes is
set to something other than "init" process. On such systems, the
changing binary procedure did not work.
The fix is to check if PPID has changed, instead of assuming it's
always 1 for orphaned processes.
| author | Ruslan Ermilov <ru@nginx.com> |
|---|---|
| date | Tue, 28 Nov 2017 12:00:24 +0300 |
| parents | f38647c651a8 |
| children |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 #include <ngx_channel.h> |
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13 |
| 539 | 14 typedef struct { |
| 3681 | 15 int signo; |
| 16 char *signame; | |
| 17 char *name; | |
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18 void (*handler)(int signo, siginfo_t *siginfo, void *ucontext); |
| 539 | 19 } ngx_signal_t; |
| 20 | |
| 21 | |
| 22 | |
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23 static void ngx_execute_proc(ngx_cycle_t *cycle, void *data); |
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24 static void ngx_signal_handler(int signo, siginfo_t *siginfo, void *ucontext); |
| 539 | 25 static void ngx_process_get_status(void); |
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26 static void ngx_unlock_mutexes(ngx_pid_t pid); |
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27 |
| 452 | 28 |
| 29 int ngx_argc; | |
| 30 char **ngx_argv; | |
| 31 char **ngx_os_argv; | |
| 32 | |
| 33 ngx_int_t ngx_process_slot; | |
| 34 ngx_socket_t ngx_channel; | |
| 35 ngx_int_t ngx_last_process; | |
| 36 ngx_process_t ngx_processes[NGX_MAX_PROCESSES]; | |
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37 |
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38 |
| 539 | 39 ngx_signal_t signals[] = { |
| 40 { ngx_signal_value(NGX_RECONFIGURE_SIGNAL), | |
| 41 "SIG" ngx_value(NGX_RECONFIGURE_SIGNAL), | |
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42 "reload", |
| 539 | 43 ngx_signal_handler }, |
| 44 | |
| 45 { ngx_signal_value(NGX_REOPEN_SIGNAL), | |
| 46 "SIG" ngx_value(NGX_REOPEN_SIGNAL), | |
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47 "reopen", |
| 539 | 48 ngx_signal_handler }, |
| 49 | |
| 50 { ngx_signal_value(NGX_NOACCEPT_SIGNAL), | |
| 51 "SIG" ngx_value(NGX_NOACCEPT_SIGNAL), | |
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52 "", |
| 539 | 53 ngx_signal_handler }, |
| 54 | |
| 55 { ngx_signal_value(NGX_TERMINATE_SIGNAL), | |
| 56 "SIG" ngx_value(NGX_TERMINATE_SIGNAL), | |
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57 "stop", |
| 539 | 58 ngx_signal_handler }, |
| 59 | |
| 60 { ngx_signal_value(NGX_SHUTDOWN_SIGNAL), | |
| 61 "SIG" ngx_value(NGX_SHUTDOWN_SIGNAL), | |
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62 "quit", |
| 539 | 63 ngx_signal_handler }, |
| 64 | |
| 65 { ngx_signal_value(NGX_CHANGEBIN_SIGNAL), | |
| 66 "SIG" ngx_value(NGX_CHANGEBIN_SIGNAL), | |
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67 "", |
| 539 | 68 ngx_signal_handler }, |
| 69 | |
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70 { SIGALRM, "SIGALRM", "", ngx_signal_handler }, |
| 539 | 71 |
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72 { SIGINT, "SIGINT", "", ngx_signal_handler }, |
| 539 | 73 |
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74 { SIGIO, "SIGIO", "", ngx_signal_handler }, |
| 539 | 75 |
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76 { SIGCHLD, "SIGCHLD", "", ngx_signal_handler }, |
| 539 | 77 |
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78 { SIGSYS, "SIGSYS, SIG_IGN", "", NULL }, |
| 3045 | 79 |
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80 { SIGPIPE, "SIGPIPE, SIG_IGN", "", NULL }, |
| 539 | 81 |
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82 { 0, NULL, "", NULL } |
| 539 | 83 }; |
| 84 | |
| 85 | |
| 515 | 86 ngx_pid_t |
| 87 ngx_spawn_process(ngx_cycle_t *cycle, ngx_spawn_proc_pt proc, void *data, | |
| 88 char *name, ngx_int_t respawn) | |
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89 { |
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90 u_long on; |
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91 ngx_pid_t pid; |
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92 ngx_int_t s; |
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93 |
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94 if (respawn >= 0) { |
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95 s = respawn; |
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96 |
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97 } else { |
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98 for (s = 0; s < ngx_last_process; s++) { |
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99 if (ngx_processes[s].pid == -1) { |
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100 break; |
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101 } |
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102 } |
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103 |
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104 if (s == NGX_MAX_PROCESSES) { |
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105 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
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106 "no more than %d processes can be spawned", |
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107 NGX_MAX_PROCESSES); |
| 543 | 108 return NGX_INVALID_PID; |
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109 } |
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110 } |
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111 |
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112 |
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113 if (respawn != NGX_PROCESS_DETACHED) { |
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114 |
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115 /* Solaris 9 still has no AF_LOCAL */ |
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116 |
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117 if (socketpair(AF_UNIX, SOCK_STREAM, 0, ngx_processes[s].channel) == -1) |
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118 { |
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119 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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120 "socketpair() failed while spawning \"%s\"", name); |
| 543 | 121 return NGX_INVALID_PID; |
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122 } |
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123 |
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124 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
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125 "channel %d:%d", |
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126 ngx_processes[s].channel[0], |
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127 ngx_processes[s].channel[1]); |
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128 |
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129 if (ngx_nonblocking(ngx_processes[s].channel[0]) == -1) { |
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130 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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131 ngx_nonblocking_n " failed while spawning \"%s\"", |
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132 name); |
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133 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 134 return NGX_INVALID_PID; |
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135 } |
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136 |
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137 if (ngx_nonblocking(ngx_processes[s].channel[1]) == -1) { |
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138 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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139 ngx_nonblocking_n " failed while spawning \"%s\"", |
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140 name); |
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141 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 142 return NGX_INVALID_PID; |
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143 } |
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144 |
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145 on = 1; |
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146 if (ioctl(ngx_processes[s].channel[0], FIOASYNC, &on) == -1) { |
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147 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
148 "ioctl(FIOASYNC) failed while spawning \"%s\"", name); |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
149 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 150 return NGX_INVALID_PID; |
|
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
151 } |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
152 |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
153 if (fcntl(ngx_processes[s].channel[0], F_SETOWN, ngx_pid) == -1) { |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
154 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
155 "fcntl(F_SETOWN) failed while spawning \"%s\"", name); |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
156 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 157 return NGX_INVALID_PID; |
|
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
158 } |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
159 |
|
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
160 if (fcntl(ngx_processes[s].channel[0], F_SETFD, FD_CLOEXEC) == -1) { |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
161 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
162 "fcntl(FD_CLOEXEC) failed while spawning \"%s\"", |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
163 name); |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
164 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 165 return NGX_INVALID_PID; |
|
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
166 } |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
167 |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
168 if (fcntl(ngx_processes[s].channel[1], F_SETFD, FD_CLOEXEC) == -1) { |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
169 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
170 "fcntl(FD_CLOEXEC) failed while spawning \"%s\"", |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
171 name); |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
172 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 173 return NGX_INVALID_PID; |
|
366
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
174 } |
|
e411b1482ee3
nginx-0.0.7-2004-06-23-19:18:17 import
Igor Sysoev <igor@sysoev.ru>
parents:
365
diff
changeset
|
175 |
|
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
176 ngx_channel = ngx_processes[s].channel[1]; |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
177 |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
178 } else { |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
179 ngx_processes[s].channel[0] = -1; |
|
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
180 ngx_processes[s].channel[1] = -1; |
|
360
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
181 } |
|
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
182 |
|
239e37d44a34
nginx-0.0.7-2004-06-18-20:22:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
355
diff
changeset
|
183 ngx_process_slot = s; |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
184 |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
185 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
186 pid = fork(); |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
187 |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
188 switch (pid) { |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
189 |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
190 case -1: |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
191 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
192 "fork() failed while spawning \"%s\"", name); |
|
365
fd24ba70e1b3
nginx-0.0.7-2004-06-23-09:54:27 import
Igor Sysoev <igor@sysoev.ru>
parents:
360
diff
changeset
|
193 ngx_close_channel(ngx_processes[s].channel, cycle->log); |
| 543 | 194 return NGX_INVALID_PID; |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
195 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
196 case 0: |
|
7162
8b84d60ef13d
Fixed "changing binary" when reaper is not init.
Ruslan Ermilov <ru@nginx.com>
parents:
6994
diff
changeset
|
197 ngx_parent = ngx_pid; |
|
249
2a0540287298
nginx-0.0.2-2004-02-03-19:43:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
248
diff
changeset
|
198 ngx_pid = ngx_getpid(); |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
199 proc(cycle, data); |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
200 break; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
201 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
202 default: |
|
195
8dee38ea9117
nginx-0.0.1-2003-11-25-23:44:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
191
diff
changeset
|
203 break; |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
205 |
| 477 | 206 ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start %s %P", name, pid); |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
207 |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
208 ngx_processes[s].pid = pid; |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
209 ngx_processes[s].exited = 0; |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
210 |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
211 if (respawn >= 0) { |
|
225
2e9a8a14a0cf
nginx-0.0.1-2004-01-13-19:43:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
224
diff
changeset
|
212 return pid; |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
213 } |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
214 |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
215 ngx_processes[s].proc = proc; |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
216 ngx_processes[s].data = data; |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
217 ngx_processes[s].name = name; |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
218 ngx_processes[s].exiting = 0; |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
219 |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
220 switch (respawn) { |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
221 |
|
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
222 case NGX_PROCESS_NORESPAWN: |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
223 ngx_processes[s].respawn = 0; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
224 ngx_processes[s].just_spawn = 0; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
225 ngx_processes[s].detached = 0; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
226 break; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
227 |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
228 case NGX_PROCESS_JUST_SPAWN: |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
229 ngx_processes[s].respawn = 0; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
230 ngx_processes[s].just_spawn = 1; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
231 ngx_processes[s].detached = 0; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
232 break; |
|
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
233 |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
234 case NGX_PROCESS_RESPAWN: |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
235 ngx_processes[s].respawn = 1; |
|
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
236 ngx_processes[s].just_spawn = 0; |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
237 ngx_processes[s].detached = 0; |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
238 break; |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
239 |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
240 case NGX_PROCESS_JUST_RESPAWN: |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
241 ngx_processes[s].respawn = 1; |
|
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
242 ngx_processes[s].just_spawn = 1; |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
243 ngx_processes[s].detached = 0; |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
244 break; |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
245 |
|
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
246 case NGX_PROCESS_DETACHED: |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
247 ngx_processes[s].respawn = 0; |
|
3016
d82993af1da0
introduce NGX_PROCESS_JUST_SPAWN and change field name accordingly
Igor Sysoev <igor@sysoev.ru>
parents:
2738
diff
changeset
|
248 ngx_processes[s].just_spawn = 0; |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
249 ngx_processes[s].detached = 1; |
|
318
56496082668b
nginx-0.0.3-2004-04-16-09:14:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
250 break; |
|
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251 } |
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252 |
|
389
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253 if (s == ngx_last_process) { |
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254 ngx_last_process++; |
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255 } |
|
191
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256 |
|
225
2e9a8a14a0cf
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257 return pid; |
|
218
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258 } |
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259 |
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260 |
| 515 | 261 ngx_pid_t |
| 262 ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) | |
|
218
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263 { |
|
279
b79f021a644a
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264 return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name, |
|
226
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265 NGX_PROCESS_DETACHED); |
|
191
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266 } |
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267 |
|
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268 |
| 515 | 269 static void |
| 270 ngx_execute_proc(ngx_cycle_t *cycle, void *data) | |
|
218
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271 { |
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272 ngx_exec_ctx_t *ctx = data; |
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273 |
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274 if (execve(ctx->path, ctx->argv, ctx->envp) == -1) { |
|
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275 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
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276 "execve() failed while executing %s \"%s\"", |
|
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277 ctx->name, ctx->path); |
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278 } |
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279 |
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280 exit(1); |
|
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281 } |
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282 |
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283 |
| 539 | 284 ngx_int_t |
| 285 ngx_init_signals(ngx_log_t *log) | |
| 286 { | |
| 287 ngx_signal_t *sig; | |
| 288 struct sigaction sa; | |
| 289 | |
| 290 for (sig = signals; sig->signo != 0; sig++) { | |
| 291 ngx_memzero(&sa, sizeof(struct sigaction)); | |
|
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292 |
|
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293 if (sig->handler) { |
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294 sa.sa_sigaction = sig->handler; |
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295 sa.sa_flags = SA_SIGINFO; |
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296 |
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297 } else { |
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298 sa.sa_handler = SIG_IGN; |
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299 } |
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300 |
| 539 | 301 sigemptyset(&sa.sa_mask); |
| 302 if (sigaction(sig->signo, &sa, NULL) == -1) { | |
|
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Valgrind: sigaction() failure now ignored.
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303 #if (NGX_VALGRIND) |
|
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304 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
|
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305 "sigaction(%s) failed, ignored", sig->signame); |
|
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|
306 #else |
| 539 | 307 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
| 308 "sigaction(%s) failed", sig->signame); | |
| 309 return NGX_ERROR; | |
|
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|
310 #endif |
| 539 | 311 } |
| 312 } | |
| 313 | |
| 314 return NGX_OK; | |
| 315 } | |
| 316 | |
| 317 | |
|
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Added missing "static" specifier found by gcc -Wtraditional.
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|
318 static void |
|
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319 ngx_signal_handler(int signo, siginfo_t *siginfo, void *ucontext) |
| 539 | 320 { |
| 321 char *action; | |
| 322 ngx_int_t ignore; | |
| 323 ngx_err_t err; | |
| 324 ngx_signal_t *sig; | |
| 325 | |
| 326 ignore = 0; | |
| 327 | |
| 328 err = ngx_errno; | |
| 329 | |
| 330 for (sig = signals; sig->signo != 0; sig++) { | |
| 331 if (sig->signo == signo) { | |
| 332 break; | |
| 333 } | |
| 334 } | |
| 335 | |
|
3475
ab353d7dc182
*) introduce ngx_time_sigsafe_update() to update the error log time only
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|
336 ngx_time_sigsafe_update(); |
| 539 | 337 |
| 338 action = ""; | |
| 339 | |
| 340 switch (ngx_process) { | |
| 341 | |
| 342 case NGX_PROCESS_MASTER: | |
| 343 case NGX_PROCESS_SINGLE: | |
| 344 switch (signo) { | |
| 345 | |
| 346 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): | |
| 347 ngx_quit = 1; | |
| 348 action = ", shutting down"; | |
| 349 break; | |
| 350 | |
| 351 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
| 352 case SIGINT: | |
| 353 ngx_terminate = 1; | |
| 354 action = ", exiting"; | |
| 355 break; | |
| 356 | |
| 357 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
|
4019
5364d2e711cc
SIGWINCH/NOACCEPT signal is disabled now in non-daemon mode.
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|
358 if (ngx_daemonized) { |
|
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SIGWINCH/NOACCEPT signal is disabled now in non-daemon mode.
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|
359 ngx_noaccept = 1; |
|
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|
360 action = ", stop accepting connections"; |
|
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|
361 } |
| 539 | 362 break; |
| 363 | |
| 364 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
| 365 ngx_reconfigure = 1; | |
| 366 action = ", reconfiguring"; | |
| 367 break; | |
| 368 | |
| 369 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
| 370 ngx_reopen = 1; | |
| 371 action = ", reopening logs"; | |
| 372 break; | |
| 373 | |
| 374 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
|
7162
8b84d60ef13d
Fixed "changing binary" when reaper is not init.
Ruslan Ermilov <ru@nginx.com>
parents:
6994
diff
changeset
|
375 if (ngx_getppid() == ngx_parent || ngx_new_binary > 0) { |
| 539 | 376 |
| 377 /* | |
| 378 * Ignore the signal in the new binary if its parent is | |
|
7162
8b84d60ef13d
Fixed "changing binary" when reaper is not init.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
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|
379 * not changed, i.e. the old binary's process is still |
|
8b84d60ef13d
Fixed "changing binary" when reaper is not init.
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parents:
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diff
changeset
|
380 * running. Or ignore the signal in the old binary's |
| 539 | 381 * process if the new binary's process is already running. |
| 382 */ | |
| 383 | |
| 384 action = ", ignoring"; | |
| 385 ignore = 1; | |
| 386 break; | |
| 387 } | |
| 388 | |
| 389 ngx_change_binary = 1; | |
| 390 action = ", changing binary"; | |
| 391 break; | |
| 392 | |
| 393 case SIGALRM: | |
|
3048
846d0e2fa483
twice termination delay only after SIGALRM, otherwise many separate SIGCHLD
Igor Sysoev <igor@sysoev.ru>
parents:
3045
diff
changeset
|
394 ngx_sigalrm = 1; |
| 539 | 395 break; |
| 396 | |
| 397 case SIGIO: | |
| 398 ngx_sigio = 1; | |
| 399 break; | |
| 400 | |
| 401 case SIGCHLD: | |
| 402 ngx_reap = 1; | |
| 403 break; | |
| 404 } | |
| 405 | |
| 406 break; | |
| 407 | |
| 408 case NGX_PROCESS_WORKER: | |
|
3358
f94e8ff65aa2
add NGX_PROCESS_HELPER process status
Igor Sysoev <igor@sysoev.ru>
parents:
3048
diff
changeset
|
409 case NGX_PROCESS_HELPER: |
| 539 | 410 switch (signo) { |
| 411 | |
| 412 case ngx_signal_value(NGX_NOACCEPT_SIGNAL): | |
|
4019
5364d2e711cc
SIGWINCH/NOACCEPT signal is disabled now in non-daemon mode.
Igor Sysoev <igor@sysoev.ru>
parents:
3787
diff
changeset
|
413 if (!ngx_daemonized) { |
|
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|
414 break; |
|
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parents:
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diff
changeset
|
415 } |
| 539 | 416 ngx_debug_quit = 1; |
|
6994
f38647c651a8
Added missing "fall through" comments (ticket #1259).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6985
diff
changeset
|
417 /* fall through */ |
| 539 | 418 case ngx_signal_value(NGX_SHUTDOWN_SIGNAL): |
| 419 ngx_quit = 1; | |
| 420 action = ", shutting down"; | |
| 421 break; | |
| 422 | |
| 423 case ngx_signal_value(NGX_TERMINATE_SIGNAL): | |
| 424 case SIGINT: | |
| 425 ngx_terminate = 1; | |
| 426 action = ", exiting"; | |
| 427 break; | |
| 428 | |
| 429 case ngx_signal_value(NGX_REOPEN_SIGNAL): | |
| 430 ngx_reopen = 1; | |
| 431 action = ", reopening logs"; | |
| 432 break; | |
| 433 | |
| 434 case ngx_signal_value(NGX_RECONFIGURE_SIGNAL): | |
| 435 case ngx_signal_value(NGX_CHANGEBIN_SIGNAL): | |
| 436 case SIGIO: | |
| 437 action = ", ignoring"; | |
| 438 break; | |
| 439 } | |
| 440 | |
| 441 break; | |
| 442 } | |
| 443 | |
|
6985
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Core: signal sender pid logging.
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diff
changeset
|
444 if (siginfo && siginfo->si_pid) { |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
445 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, |
|
23ecffd5bcfe
Core: signal sender pid logging.
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diff
changeset
|
446 "signal %d (%s) received from %P%s", |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
447 signo, sig->signame, siginfo->si_pid, action); |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
448 |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
449 } else { |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
450 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
451 "signal %d (%s) received%s", |
|
23ecffd5bcfe
Core: signal sender pid logging.
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parents:
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diff
changeset
|
452 signo, sig->signame, action); |
|
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Core: signal sender pid logging.
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diff
changeset
|
453 } |
| 539 | 454 |
| 455 if (ignore) { | |
| 456 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, 0, | |
| 457 "the changing binary signal is ignored: " | |
| 458 "you should shutdown or terminate " | |
| 459 "before either old or new binary's process"); | |
| 460 } | |
| 461 | |
| 462 if (signo == SIGCHLD) { | |
| 463 ngx_process_get_status(); | |
| 464 } | |
| 465 | |
| 466 ngx_set_errno(err); | |
| 467 } | |
| 468 | |
| 469 | |
| 470 static void | |
| 515 | 471 ngx_process_get_status(void) |
|
218
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nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
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|
472 { |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
changeset
|
473 int status; |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
changeset
|
474 char *process; |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
changeset
|
475 ngx_pid_t pid; |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
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parents:
195
diff
changeset
|
476 ngx_err_t err; |
|
354
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
477 ngx_int_t i; |
|
eaf1f651cf86
nginx-0.0.7-2004-06-15-11:55:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
318
diff
changeset
|
478 ngx_uint_t one; |
| 477 | 479 |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
480 one = 0; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
481 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
482 for ( ;; ) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
483 pid = waitpid(-1, &status, WNOHANG); |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
484 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
485 if (pid == 0) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
486 return; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
487 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
488 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
489 if (pid == -1) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
490 err = ngx_errno; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
491 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
492 if (err == NGX_EINTR) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
493 continue; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
494 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
495 |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
496 if (err == NGX_ECHILD && one) { |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
497 return; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
498 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
499 |
| 452 | 500 /* |
| 501 * Solaris always calls the signal handler for each exited process | |
|
943
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lower the log level of the waitpid() ENOCHILD error on FreeBSD
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parents:
698
diff
changeset
|
502 * despite waitpid() may be already called for this process. |
|
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Igor Sysoev <igor@sysoev.ru>
parents:
698
diff
changeset
|
503 * |
|
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Igor Sysoev <igor@sysoev.ru>
parents:
698
diff
changeset
|
504 * When several processes exit at the same time FreeBSD may |
|
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lower the log level of the waitpid() ENOCHILD error on FreeBSD
Igor Sysoev <igor@sysoev.ru>
parents:
698
diff
changeset
|
505 * erroneously call the signal handler for exited process |
| 1963 | 506 * despite waitpid() may be already called for this process. |
| 452 | 507 */ |
| 508 | |
| 509 if (err == NGX_ECHILD) { | |
|
3787
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use copied strerror() messages and autoconfigured sys_nerr value
Igor Sysoev <igor@sysoev.ru>
parents:
3681
diff
changeset
|
510 ngx_log_error(NGX_LOG_INFO, ngx_cycle->log, err, |
|
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parents:
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diff
changeset
|
511 "waitpid() failed"); |
| 563 | 512 return; |
| 452 | 513 } |
| 514 | |
|
3787
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Igor Sysoev <igor@sysoev.ru>
parents:
3681
diff
changeset
|
515 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err, |
|
e294f37401c0
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Igor Sysoev <igor@sysoev.ru>
parents:
3681
diff
changeset
|
516 "waitpid() failed"); |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
517 return; |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
518 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
519 |
|
306
6b91bfbc4123
nginx-0.0.3-2004-04-05-00:32:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
279
diff
changeset
|
520 |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
521 one = 1; |
|
389
537de4dca8ca
nginx-0.0.7-2004-07-13-21:59:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
366
diff
changeset
|
522 process = "unknown process"; |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
523 |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
524 for (i = 0; i < ngx_last_process; i++) { |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
525 if (ngx_processes[i].pid == pid) { |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
526 ngx_processes[i].status = status; |
|
222
99df0edb63ed
nginx-0.0.1-2004-01-09-00:02:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
221
diff
changeset
|
527 ngx_processes[i].exited = 1; |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
528 process = ngx_processes[i].name; |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
529 break; |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
530 } |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
531 } |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
532 |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
533 if (WTERMSIG(status)) { |
| 2494 | 534 #ifdef WCOREDUMP |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
535 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
| 461 | 536 "%s %P exited on signal %d%s", |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
537 process, pid, WTERMSIG(status), |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
538 WCOREDUMP(status) ? " (core dumped)" : ""); |
| 2494 | 539 #else |
| 540 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, | |
| 541 "%s %P exited on signal %d", | |
| 542 process, pid, WTERMSIG(status)); | |
| 543 #endif | |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
544 |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
545 } else { |
| 477 | 546 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, |
| 461 | 547 "%s %P exited with code %d", |
|
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
548 process, pid, WEXITSTATUS(status)); |
|
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
195
diff
changeset
|
549 } |
|
234
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
550 |
|
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
551 if (WEXITSTATUS(status) == 2 && ngx_processes[i].respawn) { |
|
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
552 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
| 1963 | 553 "%s %P exited with fatal code %d " |
|
4133
59b99f217c6d
Replaced "can not" with "cannot" and "could not" in a bunch of places.
Ruslan Ermilov <ru@nginx.com>
parents:
4019
diff
changeset
|
554 "and cannot be respawned", |
| 1963 | 555 process, pid, WEXITSTATUS(status)); |
|
234
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
556 ngx_processes[i].respawn = 0; |
|
cd71b95716b4
nginx-0.0.1-2004-01-20-23:40:08 import
Igor Sysoev <igor@sysoev.ru>
parents:
227
diff
changeset
|
557 } |
|
4311
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Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
558 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
559 ngx_unlock_mutexes(pid); |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
560 } |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
561 } |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
562 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
563 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
564 static void |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
565 ngx_unlock_mutexes(ngx_pid_t pid) |
| 4522 | 566 { |
|
4311
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Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
567 ngx_uint_t i; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
568 ngx_shm_zone_t *shm_zone; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
569 ngx_list_part_t *part; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
570 ngx_slab_pool_t *sp; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
571 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
572 /* |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
573 * unlock the accept mutex if the abnormally exited process |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
574 * held it |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
575 */ |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
576 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
577 if (ngx_accept_mutex_ptr) { |
|
4315
424a1ac6af43
Added (void) as we intentionally ignore returned values.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4311
diff
changeset
|
578 (void) ngx_shmtx_force_unlock(&ngx_accept_mutex, pid); |
|
4311
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Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
579 } |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
580 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
581 /* |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
582 * unlock shared memory mutexes if held by the abnormally exited |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
583 * process |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
584 */ |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
585 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
586 part = (ngx_list_part_t *) &ngx_cycle->shared_memory.part; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
587 shm_zone = part->elts; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
588 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
589 for (i = 0; /* void */ ; i++) { |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
590 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
591 if (i >= part->nelts) { |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
592 if (part->next == NULL) { |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
593 break; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
594 } |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
595 part = part->next; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
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parents:
4309
diff
changeset
|
596 shm_zone = part->elts; |
|
45272aab5eea
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parents:
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diff
changeset
|
597 i = 0; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
598 } |
|
45272aab5eea
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Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
599 |
|
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Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
600 sp = (ngx_slab_pool_t *) shm_zone[i].shm.addr; |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
601 |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
602 if (ngx_shmtx_force_unlock(&sp->mutex, pid)) { |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
603 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, |
|
45272aab5eea
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Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
604 "shared memory zone \"%V\" was locked by %P", |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
605 &shm_zone[i].shm.name, pid); |
|
45272aab5eea
Unlock of shared memory zones on process crash.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4309
diff
changeset
|
606 } |
|
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
607 } |
|
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
608 } |
| 461 | 609 |
| 610 | |
| 515 | 611 void |
| 612 ngx_debug_point(void) | |
| 461 | 613 { |
| 614 ngx_core_conf_t *ccf; | |
| 615 | |
| 616 ccf = (ngx_core_conf_t *) ngx_get_conf(ngx_cycle->conf_ctx, | |
| 617 ngx_core_module); | |
| 618 | |
| 619 switch (ccf->debug_points) { | |
| 620 | |
| 621 case NGX_DEBUG_POINTS_STOP: | |
| 622 raise(SIGSTOP); | |
| 623 break; | |
| 624 | |
| 625 case NGX_DEBUG_POINTS_ABORT: | |
| 563 | 626 ngx_abort(); |
| 461 | 627 } |
| 628 } | |
|
2738
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implement "-s signal" option for Unix
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629 |
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630 |
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631 ngx_int_t |
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632 ngx_os_signal_process(ngx_cycle_t *cycle, char *name, ngx_pid_t pid) |
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633 { |
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634 ngx_signal_t *sig; |
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635 |
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636 for (sig = signals; sig->signo != 0; sig++) { |
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637 if (ngx_strcmp(name, sig->name) == 0) { |
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638 if (kill(pid, sig->signo) != -1) { |
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639 return 0; |
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640 } |
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641 |
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642 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
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643 "kill(%P, %d) failed", pid, sig->signo); |
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644 } |
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645 } |
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646 |
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647 return 1; |
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648 } |