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Copy pathnginx-1.4.1-1.58-proc-module.patch
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nginx-1.4.1-1.58-proc-module.patch
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diff --git a/auto/make b/auto/make
index 05b7454..6c32920 100644
--- a/auto/make
+++ b/auto/make
@@ -10,7 +10,8 @@ mkdir -p $NGX_OBJS/src/core $NGX_OBJS/src/event $NGX_OBJS/src/event/modules \
$NGX_OBJS/src/http $NGX_OBJS/src/http/modules \
$NGX_OBJS/src/http/modules/perl \
$NGX_OBJS/src/mail \
- $NGX_OBJS/src/misc
+ $NGX_OBJS/src/misc \
+ $NGX_OBJS/src/proc
ngx_objs_dir=$NGX_OBJS$ngx_regex_dirsep
diff --git a/auto/modules b/auto/modules
index a78e785..5315338 100644
--- a/auto/modules
+++ b/auto/modules
@@ -61,6 +61,16 @@ if [ $NGX_TEST_BUILD_SOLARIS_SENDFILEV = YES ]; then
fi
+if [ $PROCS = YES ]; then
+ have=NGX_PROCS . auto/have
+ CORE_SRCS="$CORE_SRCS $PROCS_SRCS"
+ CORE_DEPS="$CORE_DEPS $PROCS_DEPS"
+ CORE_INCS="$CORE_INCS $PROCS_INCS"
+else
+ PROCS_MODULES=
+fi
+
+
if [ $HTTP != YES ]; then
have=NGX_CRYPT . auto/nohave
CRYPT_LIB=
@@ -418,7 +428,7 @@ if [ $MAIL_SSL = YES ]; then
fi
-modules="$CORE_MODULES $EVENT_MODULES"
+modules="$CORE_MODULES $EVENT_MODULES $PROCS_MODULES"
if [ $USE_OPENSSL = YES ]; then
diff --git a/auto/options b/auto/options
index 6713379..29b306a 100644
--- a/auto/options
+++ b/auto/options
@@ -110,6 +110,9 @@ MAIL_POP3=YES
MAIL_IMAP=YES
MAIL_SMTP=YES
+# procs module
+PROCS=YES
+
NGX_ADDONS=
USE_PCRE=NO
@@ -189,6 +192,9 @@ do
#--with-threads=*) USE_THREADS="$value" ;;
#--with-threads) USE_THREADS="pthreads" ;;
+ # PROCS
+ --without-procs) PROCS=NO ;;
+
--with-file-aio) NGX_FILE_AIO=YES ;;
--with-ipv6) NGX_IPV6=YES ;;
@@ -347,6 +353,8 @@ cat << END
--with-poll_module enable poll module
--without-poll_module disable poll module
+ --without-procs disable procs module
+
--with-file-aio enable file AIO support
--with-ipv6 enable IPv6 support
diff --git a/auto/sources b/auto/sources
index 90465c3..f78e36f 100644
--- a/auto/sources
+++ b/auto/sources
@@ -126,6 +126,13 @@ RTSIG_SRCS=src/event/modules/ngx_rtsig_module.c
IOCP_MODULE=ngx_iocp_module
IOCP_SRCS=src/event/modules/ngx_iocp_module.c
+
+PROCS_MODULES="ngx_procs_module ngx_proc_core_module"
+PROCS_DEPS="src/proc/ngx_proc.h"
+PROCS_INCS="src/proc"
+PROCS_SRCS="src/proc/ngx_proc.c"
+
+
AIO_MODULE=ngx_aio_module
AIO_SRCS="src/event/modules/ngx_aio_module.c \
src/os/unix/ngx_aio_read.c \
diff --git a/src/core/ngx_core.h b/src/core/ngx_core.h
index dfcf2d5..6a9ae54 100644
--- a/src/core/ngx_core.h
+++ b/src/core/ngx_core.h
@@ -83,6 +83,9 @@ typedef void (*ngx_connection_handler_pt)(ngx_connection_t *c);
#define CR (u_char) 13
#define CRLF "\x0d\x0a"
+#if (NGX_PROCS)
+#include <ngx_proc.h>
+#endif
#define ngx_abs(value) (((value) >= 0) ? (value) : - (value))
#define ngx_max(val1, val2) ((val1 < val2) ? (val2) : (val1))
diff --git a/src/os/unix/ngx_process.c b/src/os/unix/ngx_process.c
index 4ef3582..8839630 100644
--- a/src/os/unix/ngx_process.c
+++ b/src/os/unix/ngx_process.c
@@ -393,6 +393,7 @@ ngx_signal_handler(int signo)
case NGX_PROCESS_WORKER:
case NGX_PROCESS_HELPER:
+ case NGX_PROCESS_PROC:
switch (signo) {
case ngx_signal_value(NGX_NOACCEPT_SIGNAL):
diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
index dfdfae0..dacfaf6 100644
--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -137,6 +137,10 @@ ngx_master_process_cycle(ngx_cycle_t *cycle)
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
+#if (NGX_PROCS)
+ ngx_procs_start(cycle, 0);
+#endif
+
ngx_new_binary = 0;
delay = 0;
sigio = 0;
@@ -230,6 +234,10 @@ ngx_master_process_cycle(ngx_cycle_t *cycle)
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
+
+#if (NGX_PROCS)
+ ngx_procs_start(cycle, 0);
+#endif
ngx_noaccepting = 0;
continue;
@@ -250,6 +258,9 @@ ngx_master_process_cycle(ngx_cycle_t *cycle)
NGX_PROCESS_JUST_RESPAWN);
ngx_start_cache_manager_processes(cycle, 1);
+#if (NGX_PROCS)
+ ngx_procs_start(cycle, 1);
+#endif
/* allow new processes to start */
ngx_msleep(100);
@@ -263,6 +274,11 @@ ngx_master_process_cycle(ngx_cycle_t *cycle)
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_start_cache_manager_processes(cycle, 0);
+
+#if (NGX_PROCS)
+ ngx_procs_start(cycle, 0);
+#endif
+
live = 1;
}
@@ -1293,8 +1309,8 @@ ngx_cache_manager_process_cycle(ngx_cycle_t *cycle, void *data)
{
ngx_cache_manager_ctx_t *ctx = data;
- void *ident[4];
- ngx_event_t ev;
+ void *ident[4];
+ ngx_event_t ev;
/*
* Set correct process type since closing listening Unix domain socket
diff --git a/src/os/unix/ngx_process_cycle.h b/src/os/unix/ngx_process_cycle.h
index 94747b8..b4461d6 100644
--- a/src/os/unix/ngx_process_cycle.h
+++ b/src/os/unix/ngx_process_cycle.h
@@ -25,6 +25,7 @@
#define NGX_PROCESS_SIGNALLER 2
#define NGX_PROCESS_WORKER 3
#define NGX_PROCESS_HELPER 4
+#define NGX_PROCESS_PROC 5
typedef struct {
diff --git a/src/proc/ngx_proc.c b/src/proc/ngx_proc.c
new file mode 100644
index 0000000..4e582a4
--- /dev/null
+++ b/src/proc/ngx_proc.c
@@ -0,0 +1,1014 @@
+
+/*
+ * Copyright (C) 2010-2012 Alibaba Group Holding Limited
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_channel.h>
+#include <ngx_proc.h>
+
+
+static char *ngx_procs_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+static void ngx_procs_cycle(ngx_cycle_t *cycle, void *data);
+static void ngx_procs_process_init(ngx_cycle_t *cycle,
+ ngx_proc_module_t *module, ngx_int_t priority);
+static void ngx_procs_channel_handler(ngx_event_t *ev);
+static void ngx_procs_process_exit(ngx_cycle_t *cycle,
+ ngx_proc_module_t *module);
+static void ngx_procs_pass_open_channel(ngx_cycle_t *cycle, ngx_channel_t *ch);
+
+static char *ngx_proc_process(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+static void *ngx_proc_create_main_conf(ngx_conf_t *cf);
+static void *ngx_proc_create_conf(ngx_conf_t *cf);
+static char *ngx_proc_merge_conf(ngx_conf_t *cf, void *parent, void *child);
+static char *ngx_procs_set_priority(ngx_conf_t *cf, ngx_command_t *cmd,
+ void *conf);
+
+
+static ngx_command_t ngx_procs_commands[] = {
+
+ { ngx_string("processes"),
+ NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
+ ngx_procs_block,
+ 0,
+ 0,
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_core_module_t ngx_procs_module_ctx = {
+ ngx_string("procs"),
+ NULL,
+ NULL
+};
+
+
+ngx_module_t ngx_procs_module = {
+ NGX_MODULE_V1,
+ &ngx_procs_module_ctx, /* module context */
+ ngx_procs_commands, /* module directives */
+ NGX_CORE_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_command_t ngx_proc_core_commands[] = {
+
+ { ngx_string("process"),
+ NGX_PROC_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
+ ngx_proc_process,
+ 0,
+ 0,
+ NULL },
+
+ { ngx_string("count"),
+ NGX_PROC_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_num_slot,
+ NGX_PROC_CONF_OFFSET,
+ offsetof(ngx_proc_conf_t, count),
+ NULL },
+
+ { ngx_string("priority"),
+ NGX_PROC_CONF|NGX_CONF_TAKE1,
+ ngx_procs_set_priority,
+ NGX_PROC_CONF_OFFSET,
+ 0,
+ NULL },
+
+ { ngx_string("delay_start"),
+ NGX_PROC_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_msec_slot,
+ NGX_PROC_CONF_OFFSET,
+ offsetof(ngx_proc_conf_t, delay_start),
+ NULL },
+
+ { ngx_string("respawn"),
+ NGX_PROC_CONF|NGX_CONF_FLAG,
+ ngx_conf_set_flag_slot,
+ NGX_PROC_CONF_OFFSET,
+ offsetof(ngx_proc_conf_t, respawn),
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_proc_module_t ngx_proc_core_module_ctx = {
+ ngx_string("proc_core"),
+ ngx_proc_create_main_conf,
+ NULL,
+ ngx_proc_create_conf,
+ ngx_proc_merge_conf,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+
+ngx_module_t ngx_proc_core_module = {
+ NGX_MODULE_V1,
+ &ngx_proc_core_module_ctx, /* module context */
+ ngx_proc_core_commands, /* module directives */
+ NGX_PROC_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_uint_t ngx_procs_max_module;
+static ngx_cycle_t ngx_procs_exit_cycle;
+static ngx_log_t ngx_procs_exit_log;
+static ngx_open_file_t ngx_procs_exit_log_file;
+#if (NGX_SYSLOG)
+static ngx_syslog_t ngx_procs_exit_log_syslog;
+#endif
+
+
+static char *
+ngx_procs_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ char *rv;
+ ngx_uint_t i, mi, p;
+ ngx_conf_t pcf;
+ ngx_proc_conf_t **cpcfp;
+ ngx_proc_module_t *module;
+ ngx_proc_conf_ctx_t *ctx;
+ ngx_proc_main_conf_t *cmcf;
+
+ /* the procs context */
+ ctx = ngx_pcalloc(cf->pool, sizeof(ngx_proc_conf_ctx_t));
+ if (ctx == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ *(ngx_proc_conf_ctx_t **) conf = ctx;
+
+ ngx_procs_max_module = 0;
+
+ for (i = 0; ngx_modules[i]; i++) {
+ if (ngx_modules[i]->type != NGX_PROC_MODULE) {
+ continue;
+ }
+
+ ngx_modules[i]->ctx_index = ngx_procs_max_module++;
+ }
+
+ ctx->main_conf = ngx_pcalloc(cf->pool,
+ ngx_procs_max_module * sizeof(void *));
+ if (ctx->main_conf == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ ctx->proc_conf = ngx_pcalloc(cf->pool,
+ sizeof(void *) * ngx_procs_max_module);
+ if (ctx->proc_conf == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ /* create the main_confs for all proc modules */
+
+ for (i = 0; ngx_modules[i]; i++) {
+ if (ngx_modules[i]->type != NGX_PROC_MODULE) {
+ continue;
+ }
+
+ module = ngx_modules[i]->ctx;
+ mi = ngx_modules[i]->ctx_index;
+
+ if (module->create_main_conf) {
+
+ ctx->main_conf[mi] = module->create_main_conf(cf);
+
+ if (ctx->main_conf[mi] == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ }
+
+ if (module->create_proc_conf) {
+ ctx->proc_conf[mi] = module->create_proc_conf(cf);
+
+ if (ctx->proc_conf[mi] == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ }
+ }
+
+
+ pcf = *cf;
+ cf->ctx = ctx;
+
+ /* parse inside the procs block */
+ cf->module_type = NGX_PROC_MODULE;
+ cf->cmd_type = NGX_PROC_MAIN_CONF;
+
+ rv = ngx_conf_parse(cf, NULL);
+
+ if (rv != NGX_CONF_OK) {
+ *cf = pcf;
+ return rv;
+ }
+
+ cmcf = ctx->main_conf[ngx_proc_core_module.ctx_index];
+ cpcfp = cmcf->processes.elts;
+
+ for (i = 0; ngx_modules[i]; i++) {
+
+ if (ngx_modules[i]->type != NGX_PROC_MODULE) {
+ continue;
+ }
+
+ module = ngx_modules[i]->ctx;
+ mi = ngx_modules[i]->ctx_index;
+
+ cf->ctx = ctx;
+
+ if (module->init_main_conf) {
+ rv = module->init_main_conf(cf,ctx->main_conf[mi]);
+ if (rv != NGX_CONF_OK) {
+ *cf = pcf;
+ return rv;
+ }
+ }
+
+ for (p = 0; p < cmcf->processes.nelts; p++) {
+
+ cf->ctx = cpcfp[p]->ctx;
+
+ if (ngx_strcmp(module->name.data, cpcfp[p]->name.data) == 0
+ || ngx_strcmp(module->name.data, "proc_core") == 0)
+ {
+ if (module->merge_proc_conf) {
+ rv = module->merge_proc_conf(cf, ctx->proc_conf[mi],
+ cpcfp[p]->ctx->proc_conf[mi]);
+
+ if (rv != NGX_CONF_OK) {
+ *cf = pcf;
+ return rv;
+ }
+
+ /* copy child to parent, tricky */
+ ctx->proc_conf[mi] = cpcfp[p]->ctx->proc_conf[mi];
+ }
+ }
+ }
+ }
+
+ *cf = pcf;
+
+ return NGX_CONF_OK;
+}
+
+
+ngx_int_t
+ngx_procs_start(ngx_cycle_t *cycle, ngx_int_t type)
+{
+ ngx_int_t rc, respawn;
+ ngx_uint_t i, p, n;
+ ngx_channel_t ch;
+ ngx_proc_args_t **args;
+ ngx_proc_conf_t **cpcfp;
+ ngx_proc_module_t *module;
+ ngx_proc_main_conf_t *cmcf;
+
+ ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start procs processes");
+
+ if (ngx_get_conf(cycle->conf_ctx, ngx_procs_module) == NULL) {
+ return NGX_OK;
+ }
+
+ ch.command = NGX_CMD_OPEN_CHANNEL;
+ cmcf = ngx_proc_get_main_conf(cycle->conf_ctx, ngx_proc_core_module);
+
+ cpcfp = cmcf->processes.elts;
+ args = ngx_pcalloc(cycle->pool,
+ sizeof(ngx_proc_args_t *) * cmcf->processes.nelts);
+ if (args == NULL) {
+ return NGX_ERROR;
+ }
+
+ for (p = 0; p< cmcf->processes.nelts; p++) {
+ args[p] = ngx_pcalloc(cycle->pool, sizeof(ngx_proc_args_t));
+ if (args[p] == NULL) {
+ return NGX_ERROR;
+ }
+ }
+
+ respawn = type ? NGX_PROCESS_JUST_RESPAWN : NGX_PROCESS_RESPAWN;
+
+ for (i = 0; ngx_modules[i]; i++) {
+
+ if (ngx_modules[i]->type != NGX_PROC_MODULE) {
+ continue;
+ }
+
+ module = ngx_modules[i]->ctx;
+
+ for (p = 0; p < cmcf->processes.nelts; p++) {
+ if (ngx_strcmp(cpcfp[p]->name.data, module->name.data) == 0) {
+
+ if (module->prepare) {
+ rc = module->prepare(cycle);
+ if (rc != NGX_OK) {
+ break;
+ }
+ }
+
+ if (type == 1) {
+ if (cpcfp[p]->respawn) {
+ respawn = NGX_PROCESS_JUST_RESPAWN;
+ }
+ } else {
+ if (cpcfp[p]->respawn) {
+ respawn = NGX_PROCESS_RESPAWN;
+ } else {
+ respawn = NGX_PROCESS_NORESPAWN;
+ }
+ }
+
+ /* processes count */
+ for (n = 0; n < cpcfp[p]->count; n++) {
+ args[p]->module = ngx_modules[i];
+ args[p]->proc_conf = cpcfp[p];
+
+ ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
+ "start process %V", &cpcfp[p]->name);
+
+ ngx_spawn_process(cycle, ngx_procs_cycle, args[p],
+ (char *) cpcfp[p]->name.data, respawn);
+
+ ch.pid = ngx_processes[ngx_process_slot].pid;
+ ch.slot = ngx_process_slot;
+ ch.fd = ngx_processes[ngx_process_slot].channel[0];
+
+ ngx_procs_pass_open_channel(cycle, &ch);
+ }
+ }
+ }
+ }
+
+ return NGX_OK;
+}
+
+
+static void
+ngx_procs_cycle(ngx_cycle_t *cycle, void *data)
+{
+ ngx_int_t rc;
+ ngx_uint_t i;
+ ngx_module_t *module;
+ ngx_proc_args_t *args;
+ ngx_proc_conf_t *cpcf;
+ ngx_connection_t *c;
+ ngx_proc_module_t *ctx;
+
+ args = data;
+ module = args->module;
+ cpcf = args->proc_conf;
+ ctx = module->ctx;
+ ngx_process = NGX_PROCESS_PROC;
+
+ ngx_setproctitle((char *) ctx->name.data);
+ ngx_msleep(cpcf->delay_start);
+
+ ngx_procs_process_init(cycle, ctx, cpcf->priority);
+ ngx_close_listening_sockets(cycle);
+ ngx_use_accept_mutex = 0;
+
+ for ( ;; ) {
+ if (ngx_exiting || ngx_quit) {
+ ngx_exiting = 1;
+ ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
+ "process %V gracefully shutting down", &ctx->name);
+ ngx_setproctitle("processes are shutting down");
+
+ c = cycle->connections;
+
+ for (i = 0; i < cycle->connection_n; i++) {
+ if (c[i].fd != -1 && c[i].idle) {
+ c[i].close = 1;
+ c[i].read->handler(c[i].read);
+ }
+ }
+
+ ngx_procs_process_exit(cycle, ctx);
+ }
+
+ if (ngx_terminate) {
+ ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "process %V exiting",
+ &ctx->name);
+
+ ngx_procs_process_exit(cycle, ctx);
+ }
+
+ if (ngx_reopen) {
+ ngx_reopen = 0;
+ ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs");
+ ngx_reopen_files(cycle, -1);
+ }
+
+ if (ctx->loop) {
+ rc = ctx->loop(cycle);
+ if (rc != NGX_OK) {
+ break;
+ }
+ }
+
+ ngx_time_update();
+
+ ngx_process_events_and_timers(cycle);
+ }
+
+ ngx_procs_process_exit(cycle, ctx);
+}
+
+
+static void
+ngx_procs_process_init(ngx_cycle_t *cycle, ngx_proc_module_t *module,
+ ngx_int_t priority)
+{
+ sigset_t set;
+ ngx_int_t n;
+ ngx_uint_t i;
+ struct rlimit rlmt;
+ ngx_core_conf_t *ccf;
+ ngx_listening_t *ls;
+
+ if (ngx_set_environment(cycle, NULL) == NULL) {
+ /* fatal */
+ exit(2);
+ }
+
+ ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
+
+ if (priority != 0) {
+ if (setpriority(PRIO_PROCESS, 0, (int) priority) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V setpriority(%d) failed", &module->name,
+ priority);
+ }
+ }
+
+ if (ccf->rlimit_nofile != NGX_CONF_UNSET) {
+ rlmt.rlim_cur = (rlim_t) ccf->rlimit_nofile;
+ rlmt.rlim_max = (rlim_t) ccf->rlimit_nofile;
+
+ if (setrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V setrlimit(RLIMIT_NOFILE, %i) failed",
+ &module->name, ccf->rlimit_nofile);
+ }
+ }
+
+ if (ccf->rlimit_core != NGX_CONF_UNSET) {
+ rlmt.rlim_cur = (rlim_t) ccf->rlimit_core;
+ rlmt.rlim_max = (rlim_t) ccf->rlimit_core;
+
+ if (setrlimit(RLIMIT_CORE, &rlmt) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V setrlimit(RLIMIT_CORE, %O) failed",
+ &module->name, ccf->rlimit_core);
+ }
+ }
+
+#ifdef RLIMIT_SIGPENDING
+ if (ccf->rlimit_sigpending != NGX_CONF_UNSET) {
+ rlmt.rlim_cur = (rlim_t) ccf->rlimit_sigpending;
+ rlmt.rlim_max = (rlim_t) ccf->rlimit_sigpending;
+
+ if (setrlimit(RLIMIT_SIGPENDING, &rlmt) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V setrlimit(RLIMIT_SIGPENDING, %i) failed",
+ &module->name, ccf->rlimit_sigpending);
+ }
+ }
+#endif
+
+ if (geteuid() == 0) {
+ if (setgid(ccf->group) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ "process %V setgid(%d) failed", &module->name,
+ ccf->group);
+ /* fatal */
+ exit(2);
+ }
+
+ if (initgroups(ccf->username, ccf->group) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ "process %V initgroups(%s, %d) failed", &module->name,
+ ccf->username, ccf->group);
+ }
+
+ if (setuid(ccf->user) == -1) {
+ ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+ "process %V setuid(%d) failed", &module->name,
+ ccf->user);
+ /* fatal */
+ exit(2);
+ }
+ }
+
+#if (NGX_HAVE_PR_SET_DUMPABLE)
+
+ /* allow coredump after setuid() in Linux 2.4.x */
+
+ if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V prctl(PR_SET_DUMPABLE) failed",
+ &module->name);
+ }
+
+#endif
+
+ if (ccf->working_directory.len) {
+ if (chdir((char *) ccf->working_directory.data) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V chdir(\"%s\") failed", &module->name,
+ ccf->working_directory.data);
+ /* fatal */
+ exit(2);
+ }
+ }
+
+ sigemptyset(&set);
+
+ if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V sigprocmask() failed", &module->name);
+ }
+
+ /*
+ * disable deleting previous events for the listening sockets because
+ * in the worker processes there are no events at all at this point
+ */
+ ls = cycle->listening.elts;
+
+ for (i = 0; i < cycle->listening.nelts; i++) {
+ ls[i].previous = NULL;
+ }
+
+ if (ngx_event_core_module.init_process(cycle) != NGX_OK) {
+ ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
+ "process %V init event error", &module->name);
+ exit(2);
+ }
+
+ if (module->init) {
+ if (module->init(cycle) != NGX_OK) {
+ ngx_log_error(NGX_LOG_ERR, cycle->log, 0,
+ "process %V process init error", &module->name);
+ exit(2);
+ }
+ }
+
+
+ for (n = 0; n < ngx_last_process; n++) {
+
+ if (ngx_processes[n].pid == -1) {
+ continue;
+ }
+
+ if (n == ngx_process_slot) {
+ continue;
+ }
+
+ if (ngx_processes[n].channel[1] == -1) {
+ continue;
+ }
+
+ if (close(ngx_processes[n].channel[1]) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V close() channel failed", &module->name);
+ }
+ }
+
+ if (close(ngx_processes[ngx_process_slot].channel[0]) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+ "process %V close() channel failed", &module->name);
+ }
+
+#if 0
+ ngx_last_process = 0;
+#endif
+
+ if (ngx_add_channel_event(cycle, ngx_channel, NGX_READ_EVENT,
+ ngx_procs_channel_handler)
+ == NGX_ERROR)
+ {
+ /* fatal */
+ exit(2);
+ }
+}
+
+
+static void
+ngx_procs_channel_handler(ngx_event_t *ev)
+{
+ ngx_int_t n;
+ ngx_channel_t ch;
+ ngx_connection_t *c;
+
+ if (ev->timedout) {
+ ev->timedout = 0;
+ return;
+ }
+
+ c = ev->data;
+
+ ngx_log_debug0(NGX_LOG_DEBUG_CORE, ev->log, 0, "process channel handler");
+
+ for ( ;; ) {
+
+ n = ngx_read_channel(c->fd, &ch, sizeof(ngx_channel_t), ev->log);
+
+ ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0,
+ "process channel: %i", n);
+
+ if (n == NGX_ERROR) {
+
+ if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
+ ngx_del_conn(c, 0);
+ }
+
+ ngx_close_connection(c);
+ return;
+ }
+
+ if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
+ if (ngx_add_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
+ return;
+ }
+ }
+
+ if (n == NGX_AGAIN) {
+ return;
+ }
+
+ ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0,
+ "process channel command: %d", ch.command);
+
+ switch (ch.command) {
+
+ case NGX_CMD_QUIT:
+ ngx_quit = 1;
+ break;
+
+ case NGX_CMD_TERMINATE:
+ ngx_terminate = 1;
+ break;
+
+ case NGX_CMD_REOPEN:
+ ngx_reopen = 1;
+ break;
+
+ case NGX_CMD_OPEN_CHANNEL:
+
+ ngx_log_debug3(NGX_LOG_DEBUG_CORE, ev->log, 0,
+ "process got channel s:%i pid:%P fd:%d",
+ ch.slot, ch.pid, ch.fd);
+
+ ngx_processes[ch.slot].pid = ch.pid;
+ ngx_processes[ch.slot].channel[0] = ch.fd;
+ break;
+
+ case NGX_CMD_CLOSE_CHANNEL:
+
+ ngx_log_debug4(NGX_LOG_DEBUG_CORE, ev->log, 0,
+ "process closed channel s:%i pid:%P our:%P fd:%d",
+ ch.slot, ch.pid, ngx_processes[ch.slot].pid,
+ ngx_processes[ch.slot].channel[0]);
+
+ if (close(ngx_processes[ch.slot].channel[0]) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno,
+ "process close() channel failed");
+ }
+
+ ngx_processes[ch.slot].channel[0] = -1;
+ break;
+ }
+ }
+}
+
+
+static void
+ngx_procs_process_exit(ngx_cycle_t *cycle, ngx_proc_module_t *module)
+{
+ ngx_uint_t i;
+ ngx_connection_t *c;
+
+#if (NGX_THREADS)
+ ngx_terminate = 1;
+
+ ngx_wakeup_worker_threads(cycle);
+#endif
+
+ if (module->exit) {
+ module->exit(cycle);
+ }
+
+ if (ngx_exiting) {
+ c = cycle->connections;
+ for (i = 0; i < cycle->connection_n; i++) {
+ if (c[i].fd != -1
+ && c[i].read
+ && !c[i].read->accept
+ && !c[i].read->channel
+ && !c[i].read->resolver)
+ {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
+ "open socket #%d left in connection %ui",
+ c[i].fd, i);
+ ngx_debug_quit = 1;
+ }
+ }
+
+ if (ngx_debug_quit) {
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "aborting");
+ ngx_debug_point();
+ }
+ }
+
+ /*
+ * Copy ngx_cycle->log related data to the special static exit cycle,
+ * log, and log file structures enough to allow a signal handler to log.
+ * The handler may be called when standard ngx_cycle->log allocated from
+ * ngx_cycle->pool is already destroyed.
+ */
+
+ ngx_procs_exit_log_file.fd = ngx_cycle->log->file->fd;
+
+ ngx_procs_exit_log = *ngx_cycle->log;
+ ngx_procs_exit_log.file = &ngx_procs_exit_log_file;
+
+#if (NGX_SYSLOG)
+ if (ngx_procs_exit_log.syslog != NULL) {
+ ngx_procs_exit_log_syslog = *ngx_procs_exit_log.syslog;
+ ngx_procs_exit_log.syslog = &ngx_procs_exit_log_syslog;
+ }
+#endif
+
+ ngx_procs_exit_cycle.log = &ngx_procs_exit_log;
+ ngx_cycle = &ngx_procs_exit_cycle;
+
+ ngx_destroy_pool(cycle->pool);
+
+ ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, "process %V exit",
+ &module->name);
+
+ exit(0);
+}
+
+
+static void
+ngx_procs_pass_open_channel(ngx_cycle_t *cycle, ngx_channel_t *ch)
+{
+ ngx_int_t i;
+
+ for (i = 0; i < ngx_last_process; i++) {
+
+ if (i == ngx_process_slot
+ || ngx_processes[i].pid == -1
+ || ngx_processes[i].channel[0] == -1)
+ {
+ continue;
+ }
+
+ ngx_log_debug6(NGX_LOG_DEBUG_CORE, cycle->log, 0,
+ "process passed channel s:%d pid:%P fd:%d to s:%i pid:%P fd:%d",
+ ch->slot, ch->pid, ch->fd, i, ngx_processes[i].pid,
+ ngx_processes[i].channel[0]);
+
+ /* TODO: NGX_AGAIN */
+
+ ngx_write_channel(ngx_processes[i].channel[0],
+ ch, sizeof(ngx_channel_t), cycle->log);
+ }