1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht#define CORE_PRIVATE

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht#include "ap_config.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "apr_hash.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "apr_strings.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "apr_portable.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "apr_file_io.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "httpd.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "http_main.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "http_log.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "http_config.h" /* for read_config */

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "http_core.h" /* for get_remote_host */

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "http_protocol.h"

6a26171b5bc5b6ec3e1b02ae30dcfb6f03d7ffefSimon Ulbricht#include "http_connection.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "ap_mpm.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "unixd.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "mpm_common.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "ap_listen.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "mpm_default.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "mpm.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include "scoreboard.h"

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#ifdef HAVE_UNISTD_H

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <unistd.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#endif

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <poll.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#ifdef HAVE_SYS_SOCKET_H

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <sys/socket.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#endif

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#ifdef HAVE_NETINET_TCP_H

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#include <netinet/tcp.h>

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#endif

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <grp.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <pwd.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <pthread.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <sys/stat.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <sys/un.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <signal.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <setjmp.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht#include <stropts.h>

432ac7c08e2592af0660e026051ffb052e88a100Simon Ulbricht

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int threads_to_start = 0; /* Worker threads per child */

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int min_spare_threads = 0;

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int max_spare_threads = 0;

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int max_threads = 0;

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int max_requests_per_child = 0;

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic const char *ap_pid_fname=NULL;

a210c2e5add831cd438183c8602ed8e610922beaSimon UlbrichtAPI_VAR_EXPORT const char *ap_scoreboard_fname=NULL;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int num_daemons=0;

6a26171b5bc5b6ec3e1b02ae30dcfb6f03d7ffefSimon Ulbrichtstatic int curr_child_num=0;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichtstatic int workers_may_exit = 0;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichtstatic int requests_this_child;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichtstatic int num_listenfds = 0;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichtstatic apr_socket_t **listenfds;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichtstatic jmp_buf jmpbuffer;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichtstruct child_info_t {

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht uid_t uid;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht gid_t gid;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht int sd;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht};

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbrichttypedef struct {

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht const char *sockname; /* The base name for the socket */

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht const char *fullsockname; /* socket base name + extension */

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht int sd; /* The socket descriptor */

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht int sd2; /* The socket descriptor */

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht} perchild_server_conf;

abea93ed557b22ea833e1524ee5ca11afc12208aSimon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichttypedef struct child_info_t child_info_t;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic child_info_t child_info_table[HARD_SERVER_LIMIT];

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int thread_socket_table[HARD_THREAD_LIMIT];

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstruct ap_ctable ap_child_table[HARD_SERVER_LIMIT];

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtint ap_max_daemons_limit = -1;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtchar ap_coredump_dir[MAX_STRING_LEN];

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtmodule MODULE_VAR_EXPORT mpm_perchild_module;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic apr_file_t *pipe_of_death_in = NULL;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic apr_file_t *pipe_of_death_out = NULL;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic pthread_mutex_t pipe_of_death_mutex;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtserver_rec *ap_server_conf;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int one_process = 0;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#ifdef DEBUG_SIGSTOP

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtint raise_sigstop_flags;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#endif

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic apr_pool_t *pconf; /* Pool for config stuff */

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic apr_pool_t *pchild; /* Pool for httpd child stuff */

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic apr_pool_t *thread_pool_parent; /* Parent of per-thread pools */

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic pthread_mutex_t thread_pool_parent_mutex;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbrichtstatic int child_num;

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbrichtstatic unsigned int my_pid; /* Linux getpid() doesn't work except in

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int worker_thread_count;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic pthread_mutex_t worker_thread_count_mutex;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int worker_thread_free_ids[HARD_THREAD_LIMIT];

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic pthread_attr_t worker_thread_attr;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int idle_thread_count;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic pthread_mutex_t idle_thread_count_mutex;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#ifdef NO_SERIALIZED_ACCEPT

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht#define SAFE_ACCEPT(stmt) APR_SUCCESS

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#else

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#define SAFE_ACCEPT(stmt) (stmt)

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic apr_lock_t *process_accept_mutex;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht#endif /* NO_SERIALIZED_ACCEPT */

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic const char *lock_fname;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic pthread_mutex_t thread_accept_mutex = PTHREAD_MUTEX_INITIALIZER;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon UlbrichtAPI_EXPORT(int) ap_get_max_daemons(void)

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht{

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht return ap_max_daemons_limit;

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht}

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic void clean_child_exit(int code)

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht{

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht if (pchild) {

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht apr_destroy_pool(pchild);

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht }

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht exit(code);

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht}

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic void sig_coredump(int sig)

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht{

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht chdir(ap_coredump_dir);

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht apr_signal(sig, SIG_DFL);

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht kill(getpid(), sig);

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht /* At this point we've got sig blocked, because we're still inside

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht}

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic void just_die(int sig)

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht{

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht clean_child_exit(0);

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht}

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int volatile shutdown_pending;

987c9ee1092c7fd8b53242abefe4f3cf8e9a1011Simon Ulbrichtstatic int volatile restart_pending;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbrichtstatic int volatile is_graceful;

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht

987c9ee1092c7fd8b53242abefe4f3cf8e9a1011Simon Ulbrichtvoid ap_start_shutdown(void)

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht{

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht if (shutdown_pending == 1) {

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht /* Um, is this _probably_ not an error, if the user has

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht return;

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht }

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht shutdown_pending = 1;

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht}

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbricht

53d3b5d18cae658f0e54872ade90ab5259b52b95Simon Ulbrichtstatic void ap_start_restart(int graceful)

a210c2e5add831cd438183c8602ed8e610922beaSimon Ulbricht{

1651c7f5055453e18a8c34f96c333e2aa702a34eSimon Ulbricht

369771f5d48a40eda134026b1f45f63b2c00bdb8Simon Ulbricht if (restart_pending == 1) {

987c9ee1092c7fd8b53242abefe4f3cf8e9a1011Simon Ulbricht /* Probably not an error - don't bother reporting it */

return;

}

restart_pending = 1;

is_graceful = graceful;

if (is_graceful) {

apr_kill_cleanup(pconf, NULL, ap_cleanup_shared_mem);

}

}

static void sig_term(int sig)

{

ap_start_shutdown();

}

static void restart(int sig)

{

#ifndef WIN32

ap_start_restart(sig == SIGWINCH);

#else

ap_start_restart(1);

#endif

}

static void set_signals(void)

{

#ifndef NO_USE_SIGACTION

struct sigaction sa;

sigemptyset(&sa.sa_mask);

sa.sa_flags = 0;

if (!one_process) {

sa.sa_handler = sig_coredump;

#if defined(SA_ONESHOT)

sa.sa_flags = SA_ONESHOT;

#elif defined(SA_RESETHAND)

sa.sa_flags = SA_RESETHAND;

#endif

if (sigaction(SIGSEGV, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGSEGV)");

#ifdef SIGBUS

if (sigaction(SIGBUS, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGBUS)");

#endif

#ifdef SIGABORT

if (sigaction(SIGABORT, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGABORT)");

#endif

#ifdef SIGABRT

if (sigaction(SIGABRT, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGABRT)");

#endif

#ifdef SIGILL

if (sigaction(SIGILL, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGILL)");

#endif

sa.sa_flags = 0;

}

sa.sa_handler = sig_term;

if (sigaction(SIGTERM, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");

#ifdef SIGINT

if (sigaction(SIGINT, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)");

#endif

#ifdef SIGXCPU

sa.sa_handler = SIG_DFL;

if (sigaction(SIGXCPU, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXCPU)");

#endif

#ifdef SIGXFSZ

sa.sa_handler = SIG_DFL;

if (sigaction(SIGXFSZ, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXFSZ)");

#endif

#ifdef SIGPIPE

sa.sa_handler = SIG_IGN;

if (sigaction(SIGPIPE, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGPIPE)");

#endif

/* we want to ignore HUPs and WINCH while we're busy processing one */

sigaddset(&sa.sa_mask, SIGHUP);

sigaddset(&sa.sa_mask, SIGWINCH);

sa.sa_handler = restart;

if (sigaction(SIGHUP, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");

if (sigaction(SIGWINCH, &sa, NULL) < 0)

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGWINCH)");

#else

if (!one_process) {

apr_signal(SIGSEGV, sig_coredump);

#ifdef SIGBUS

apr_signal(SIGBUS, sig_coredump);

#endif /* SIGBUS */

#ifdef SIGABORT

apr_signal(SIGABORT, sig_coredump);

#endif /* SIGABORT */

#ifdef SIGABRT

apr_signal(SIGABRT, sig_coredump);

#endif /* SIGABRT */

#ifdef SIGILL

apr_signal(SIGILL, sig_coredump);

#endif /* SIGILL */

#ifdef SIGXCPU

apr_signal(SIGXCPU, SIG_DFL);

#endif /* SIGXCPU */

#ifdef SIGXFSZ

apr_signal(SIGXFSZ, SIG_DFL);

#endif /* SIGXFSZ */

}

apr_signal(SIGTERM, sig_term);

#ifdef SIGHUP

apr_signal(SIGHUP, restart);

#endif /* SIGHUP */

#ifdef SIGWINCH

apr_signal(SIGWINCH, restart);

#endif /* SIGWINCH */

#ifdef SIGPIPE

apr_signal(SIGPIPE, SIG_IGN);

#endif /* SIGPIPE */

#endif

}

int ap_graceful_stop_signalled(void)

{

/* XXX - Does this really work? - Manoj */

return is_graceful;

}

static void process_socket(apr_pool_t *p, apr_socket_t *sock, long conn_id)

{

BUFF *conn_io;

conn_rec *current_conn;

int csd;

apr_status_t rv;

int thread_num = conn_id % HARD_THREAD_LIMIT;

if ((rv = apr_get_os_sock(&csd, sock)) != APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL, "apr_get_os_sock");

}

if (csd >= FD_SETSIZE) {

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, 0, NULL,

"new file descriptor %d is too large; you probably need "

"to rebuild Apache with a larger FD_SETSIZE "

"(currently %d)",

csd, FD_SETSIZE);

apr_close_socket(sock);

return;

}

if (thread_socket_table[thread_num] < 0) {

ap_sock_disable_nagle(sock);

}

conn_io = ap_bcreate(p, B_RDWR);

ap_bpush_socket(conn_io, sock);

current_conn = ap_new_apr_connection(p, ap_server_conf, conn_io, sock,

conn_id);

ap_process_connection(current_conn);

ap_lingering_close(current_conn);

}

static void *worker_thread(void *);

static int start_thread(void)

{

pthread_t thread;

int rc;

pthread_mutex_lock(&worker_thread_count_mutex);

if (worker_thread_count < max_threads) {

if ((rc = pthread_create(&thread, &worker_thread_attr, worker_thread,

&worker_thread_free_ids[worker_thread_count]))) {

#ifdef PTHREAD_SETS_ERRNO

rc = errno;

#endif

ap_log_error(APLOG_MARK, APLOG_ALERT, rc, ap_server_conf,

"pthread_create: unable to create worker thread");

/* In case system resources are maxxed out, we don't want

sleep(10);

workers_may_exit = 1;

pthread_mutex_unlock(&worker_thread_count_mutex);

return 0;

}

else {

worker_thread_count++;

}

}

else {

static int reported = 0;

if (!reported) {

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, ap_server_conf,

"server reached MaxThreadsPerChild setting, consider raising the"

" MaxThreadsPerChild or NumServers settings");

reported = 1;

}

pthread_mutex_unlock(&worker_thread_count_mutex);

return 0;

}

pthread_mutex_unlock(&worker_thread_count_mutex);

return 1;

}

static void check_pipe_of_death(void)

{

pthread_mutex_lock(&pipe_of_death_mutex);

if (!workers_may_exit) {

int ret;

char pipe_read_char;

apr_ssize_t n = 1;

ret = apr_recv(listenfds[0], &pipe_read_char, &n);

if (APR_STATUS_IS_EAGAIN(ret)) {

/* It lost the lottery. It must continue to suffer

}

else {

/* It won the lottery (or something else is very

workers_may_exit = 1;

}

}

pthread_mutex_unlock(&pipe_of_death_mutex);

}

static void *worker_thread(void *arg)

{

apr_socket_t *csd = NULL;

apr_pool_t *tpool; /* Pool for this thread */

apr_pool_t *ptrans; /* Pool for per-transaction stuff */

apr_socket_t *sd = NULL;

int srv;

int curr_pollfd, last_pollfd = 0;

int thread_just_started = 1;

int thread_num = *((int *) arg);

long conn_id = child_num * HARD_THREAD_LIMIT + thread_num;

apr_pollfd_t *pollset;

int n;

apr_status_t rv;

pthread_mutex_lock(&thread_pool_parent_mutex);

apr_create_pool(&tpool, thread_pool_parent);

pthread_mutex_unlock(&thread_pool_parent_mutex);

apr_create_pool(&ptrans, tpool);

apr_setup_poll(&pollset, num_listenfds+1, tpool);

for(n=0 ; n <= num_listenfds ; ++n) {

apr_add_poll_socket(pollset, listenfds[n], APR_POLLIN);

}

while (!workers_may_exit) {

workers_may_exit |= (max_requests_per_child != 0) && (requests_this_child <= 0);

if (workers_may_exit) break;

if (!thread_just_started) {

pthread_mutex_lock(&idle_thread_count_mutex);

if (idle_thread_count < max_spare_threads) {

idle_thread_count++;

pthread_mutex_unlock(&idle_thread_count_mutex);

}

else {

pthread_mutex_unlock(&idle_thread_count_mutex);

break;

}

}

else {

thread_just_started = 0;

}

pthread_mutex_lock(&thread_accept_mutex);

if (workers_may_exit) {

pthread_mutex_unlock(&thread_accept_mutex);

break;

}

if ((rv = SAFE_ACCEPT(apr_lock(process_accept_mutex)))

!= APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,

"apr_lock failed. Attempting to shutdown "

"process gracefully.");

workers_may_exit = 1;

}

while (!workers_may_exit) {

apr_int16_t event;

srv = apr_poll(pollset, &n, -1);

if (srv != APR_SUCCESS) {

if (APR_STATUS_IS_EINTR(srv)) {

continue;

}

/* apr_poll() will only return errors in catastrophic

ap_log_error(APLOG_MARK, APLOG_ERR, srv, (const server_rec *)

ap_server_conf, "apr_poll: (listen)");

workers_may_exit = 1;

}

if (workers_may_exit) break;

apr_get_revents(&event, listenfds[0], pollset);

if (event & APR_POLLIN) {

/* A process got a signal on the shutdown pipe. Check if we're

check_pipe_of_death();

continue;

}

apr_get_revents(&event, listenfds[1], pollset);

if (event & APR_POLLIN || event & APR_POLLOUT) {

/* This request is from another child in our current process.

thread_socket_table[thread_num] = -2;

goto got_from_other_child;

}

if (num_listenfds == 1) {

sd = ap_listeners->sd;

goto got_fd;

}

else {

/* find a listener */

curr_pollfd = last_pollfd;

do {

curr_pollfd++;

if (curr_pollfd > num_listenfds) {

curr_pollfd = 1;

}

/* XXX: Should we check for POLLERR? */

apr_get_revents(&event, listenfds[curr_pollfd], pollset);

if (event & APR_POLLIN) {

last_pollfd = curr_pollfd;

sd = listenfds[curr_pollfd];

goto got_fd;

}

} while (curr_pollfd != last_pollfd);

}

}

got_fd:

if (!workers_may_exit) {

if ((rv = apr_accept(&csd, sd, ptrans)) != APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf, "apr_accept");

}

if ((rv = SAFE_ACCEPT(apr_unlock(process_accept_mutex)))

!= APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,

"apr_unlock failed. Attempting to shutdown "

"process gracefully.");

workers_may_exit = 1;

}

pthread_mutex_unlock(&thread_accept_mutex);

pthread_mutex_lock(&idle_thread_count_mutex);

if (idle_thread_count > min_spare_threads) {

idle_thread_count--;

}

else {

if (!start_thread()) {

idle_thread_count--;

}

}

pthread_mutex_unlock(&idle_thread_count_mutex);

got_from_other_child:

if (thread_socket_table[thread_num] == -2) {

struct msghdr msg;

struct cmsghdr *cmsg;

char sockname[80];

struct iovec iov;

int ret, sd, dp;

iov.iov_base = sockname;

iov.iov_len = 80;

msg.msg_name = NULL;

msg.msg_namelen = 0;

msg.msg_iov = &iov;

msg.msg_iovlen = 1;

cmsg = apr_palloc(ptrans, sizeof(*cmsg) + sizeof(sd));

cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sd);

msg.msg_control = cmsg;

msg.msg_controllen = cmsg->cmsg_len;

msg.msg_flags = 0;

ret = recvmsg(child_info_table[child_num].sd, &msg, 0);

memcpy(&dp, CMSG_DATA(cmsg), sizeof(dp));

thread_socket_table[thread_num] = dp;

apr_put_os_sock(&csd, &child_info_table[child_num].sd, ptrans);

}

if (setjmp(jmpbuffer) != 1) {

process_socket(ptrans, csd, conn_id);

}

else {

thread_socket_table[thread_num] = -1;

}

requests_this_child--;

} else {

if ((rv = SAFE_ACCEPT(apr_unlock(process_accept_mutex)))

!= APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,

"apr_unlock failed. Attempting to shutdown "

"process gracefully.");

workers_may_exit = 1;

}

pthread_mutex_unlock(&thread_accept_mutex);

pthread_mutex_lock(&idle_thread_count_mutex);

idle_thread_count--;

pthread_mutex_unlock(&idle_thread_count_mutex);

break;

}

apr_clear_pool(ptrans);

}

pthread_mutex_lock(&thread_pool_parent_mutex);

apr_destroy_pool(tpool);

pthread_mutex_unlock(&thread_pool_parent_mutex);

pthread_mutex_lock(&worker_thread_count_mutex);

worker_thread_count--;

worker_thread_free_ids[worker_thread_count] = thread_num;

if (worker_thread_count == 0) {

/* All the threads have exited, now finish the shutdown process

kill(my_pid, SIGTERM);

}

pthread_mutex_unlock(&worker_thread_count_mutex);

return NULL;

}

static int set_group_privs(uid_t uid, gid_t gid)

{

if (!geteuid()) {

const char *name;

/* Get username if passed as a uid */

struct passwd *ent;

if ((ent = getpwuid(uid)) == NULL) {

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,

"getpwuid: couldn't determine user name from uid %u, "

"you probably need to modify the User directive",

(unsigned)uid);

return -1;

}

name = ent->pw_name;

/*

if (setgid(gid) == -1) {

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,

"setgid: unable to set group id to Group %u",

(unsigned)gid);

return -1;

}

/* Reset `groups' attributes. */

if (initgroups(name, gid) == -1) {

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,

"initgroups: unable to set groups for User %s "

"and Group %u", name, (unsigned)gid);

return -1;

}

}

return 0;

}

static int perchild_setup_child(int childnum)

{

child_info_t *ug = &child_info_table[childnum];

if (ug->uid == -1 && ug->gid == -1) {

return unixd_setup_child();

}

if (set_group_privs(ug->uid, ug->gid)) {

return -1;

}

/* Only try to switch if we're running as root */

if (!geteuid() && (

#ifdef _OSD_POSIX

os_init_job_environment(server_conf, unixd_config.user_name, one_process) != 0 ||

#endif

setuid(ug->uid) == -1)) {

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,

"setuid: unable to change to uid: %ld",

(long) ug->uid);

return -1;

}

return 0;

}

static void child_main(int child_num_arg)

{

sigset_t sig_mask;

int signal_received;

int i;

ap_listen_rec *lr;

apr_status_t rv;

my_pid = getpid();

child_num = child_num_arg;

apr_create_pool(&pchild, pconf);

/*stuff to do before we switch id's, so we have permissions.*/

rv = SAFE_ACCEPT(apr_child_init_lock(&process_accept_mutex, lock_fname,

pchild));

if (rv != APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,

"Couldn't initialize cross-process lock in child");

clean_child_exit(APEXIT_CHILDFATAL);

}

if (perchild_setup_child(child_num)) {

clean_child_exit(APEXIT_CHILDFATAL);

}

ap_child_init_hook(pchild, ap_server_conf);

/*done with init critical section */

/* All threads should mask signals out, accoring to sigwait(2) man page */

sigfillset(&sig_mask);

#ifdef SIGPROCMASK_SETS_THREAD_MASK

if (sigprocmask(SIG_SETMASK, &sig_mask, NULL) != 0) {

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf, "sigprocmask");

}

#else

if ((rv = pthread_sigmask(SIG_SETMASK, &sig_mask, NULL)) != 0) {

#ifdef PTHREAD_SETS_ERRNO

rv = errno;

#endif

ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,

"pthread_sigmask");

}

#endif

requests_this_child = max_requests_per_child;

/* Set up the pollfd array, num_listenfds + 1 for the pipe and 1 for

listenfds = apr_pcalloc(pchild, sizeof(*listenfds) * (num_listenfds + 2));

#if APR_FILES_AS_SOCKETS

apr_socket_from_file(&listenfds[0], pipe_of_death_in);

#endif

/* The child socket */

apr_put_os_sock(&listenfds[1], &child_info_table[child_num].sd, pchild);

num_listenfds++;

for (lr = ap_listeners, i = 2; i <= num_listenfds; lr = lr->next, ++i)

listenfds[i]=lr->sd;

/* Setup worker threads */

if (threads_to_start > max_threads) {

threads_to_start = max_threads;

}

idle_thread_count = threads_to_start;

worker_thread_count = 0;

for (i = 0; i < max_threads; i++) {

worker_thread_free_ids[i] = i;

}

apr_create_pool(&thread_pool_parent, pchild);

pthread_mutex_init(&thread_pool_parent_mutex, NULL);

pthread_mutex_init(&idle_thread_count_mutex, NULL);

pthread_mutex_init(&worker_thread_count_mutex, NULL);

pthread_mutex_init(&pipe_of_death_mutex, NULL);

pthread_attr_init(&worker_thread_attr);

#ifdef PTHREAD_ATTR_SETDETACHSTATE_ARG2_ADDR

{

int on = 1;

pthread_attr_setdetachstate(&worker_thread_attr, &on);

}

#else

pthread_attr_setdetachstate(&worker_thread_attr, PTHREAD_CREATE_DETACHED);

#endif

/* We are creating worker threads right now */

for (i=0; i < threads_to_start; i++) {

/* start_thread shouldn't fail here */

if (!start_thread()) {

break;

}

}

/* This thread will be the one responsible for handling signals */

sigemptyset(&sig_mask);

sigaddset(&sig_mask, SIGTERM);

sigaddset(&sig_mask, SIGINT);

ap_sigwait(&sig_mask, &signal_received);

switch (signal_received) {

case SIGTERM:

case SIGINT:

just_die(signal_received);

break;

default:

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,

"received impossible signal: %d", signal_received);

just_die(SIGTERM);

}

}

static int make_child(server_rec *s, int slot, time_t now)

{

int pid;

if (slot + 1 > ap_max_daemons_limit) {

ap_max_daemons_limit = slot + 1;

}

if (one_process) {

set_signals();

ap_child_table[slot].pid = getpid();

ap_child_table[slot].status = SERVER_ALIVE;

child_main(slot);

}

if ((pid = fork()) == -1) {

ap_log_error(APLOG_MARK, APLOG_ERR, errno, s,

"fork: Unable to fork new process");

/* In case system resources are maxxed out, we don't want

sleep(10);

return -1;

}

if (!pid) {

#ifdef AIX_BIND_PROCESSOR

/* By default, AIX binds to a single processor. This bit unbinds

#include <sys/processor.h>

int status = bindprocessor(BINDPROCESS, (int)getpid(),

PROCESSOR_CLASS_ANY);

if (status != OK)

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, errno,

ap_server_conf, "processor unbind failed %d", status);

#endif

RAISE_SIGSTOP(MAKE_CHILD);

/* XXX - For an unthreaded server, a signal handler will be necessary

child_main(slot);

return 0;

}

/* else */

ap_child_table[slot].pid = pid;

ap_child_table[slot].status = SERVER_ALIVE;

return 0;

}

static int startup_children(int number_to_start)

{

int i;

for (i = 0; number_to_start && i < num_daemons; ++i) {

if (ap_child_table[i].pid) {

continue;

}

if (make_child(ap_server_conf, i, 0) < 0) {

break;

}

--number_to_start;

}

return number_to_start;

}

static int spawn_rate = 1;

#ifndef MAX_SPAWN_RATE

#define MAX_SPAWN_RATE (32)

#endif

static int hold_off_on_exponential_spawning;

static void perform_child_maintenance(void)

{

int i;

time_t now = 0;

int free_length;

int free_slots[MAX_SPAWN_RATE];

int last_non_dead = -1;

/* initialize the free_list */

free_length = 0;

for (i = 0; i < num_daemons; ++i) {

if (ap_child_table[i].pid == 0) {

if (free_length < spawn_rate) {

free_slots[free_length] = i;

++free_length;

}

}

else {

last_non_dead = i;

}

if (i >= ap_max_daemons_limit && free_length >= spawn_rate) {

break;

}

}

ap_max_daemons_limit = last_non_dead + 1;

if (free_length > 0) {

for (i = 0; i < free_length; ++i) {

make_child(ap_server_conf, free_slots[i], now);

}

/* the next time around we want to spawn twice as many if this

if (hold_off_on_exponential_spawning) {

--hold_off_on_exponential_spawning;

}

else if (spawn_rate < MAX_SPAWN_RATE) {

spawn_rate *= 2;

}

}

else {

spawn_rate = 1;

}

}

static void server_main_loop(int remaining_children_to_start)

{

int child_slot;

apr_wait_t status;

apr_proc_t pid;

int i;

while (!restart_pending && !shutdown_pending) {

ap_wait_or_timeout(&status, &pid, pconf);

if (pid.pid != -1) {

ap_process_child_status(&pid, status);

/* non-fatal death... note that it's gone in the child table and

child_slot = -1;

for (i = 0; i < ap_max_daemons_limit; ++i) {

if (ap_child_table[i].pid == pid.pid) {

int j;

child_slot = i;

for (j = 0; j < HARD_THREAD_LIMIT; j++) {

ap_perchild_force_reset_connection_status(i * HARD_THREAD_LIMIT + j);

}

break;

}

}

if (child_slot >= 0) {

ap_child_table[child_slot].pid = 0;

if (remaining_children_to_start

&& child_slot < num_daemons) {

/* we're still doing a 1-for-1 replacement of dead

make_child(ap_server_conf, child_slot, time(NULL));

--remaining_children_to_start;

}

#if APR_HAS_OTHER_CHILD

}

else if (apr_reap_other_child(&pid, status) == 0) {

/* handled */

#endif

}

else if (is_graceful) {

/* Great, we've probably just lost a slot in the

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, 0,

ap_server_conf,

"long lost child came home! (pid %ld)",

(long)pid.pid);

}

/* Don't perform idle maintenance when a child dies,

continue;

}

else if (remaining_children_to_start) {

/* we hit a 1 second timeout in which none of the previous

remaining_children_to_start = \

startup_children(remaining_children_to_start);

/* In any event we really shouldn't do the code below because

continue;

}

perform_child_maintenance();

}

}

int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)

{

int remaining_children_to_start;

int i;

apr_status_t rv;

apr_ssize_t one = 1;

pconf = _pconf;

ap_server_conf = s;

if ((rv = apr_create_pipe(&pipe_of_death_in, &pipe_of_death_out, pconf))

!= APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_ERR, rv,

(const server_rec*) ap_server_conf,

"apr_create_pipe (pipe_of_death)");

exit(1);

}

if ((rv = apr_set_pipe_timeout(pipe_of_death_in, 0)) != APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_ERR, rv,

(const server_rec*) ap_server_conf,

"apr_set_pipe_timeout (pipe_of_death)");

exit(1);

}

ap_server_conf = s;

if ((num_listenfds = ap_setup_listeners(ap_server_conf)) < 1) {

/* XXX: hey, what's the right way for the mpm to indicate a fatal error? */

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ALERT, 0, s,

"no listening sockets available, shutting down");

return 1;

}

ap_log_pid(pconf, ap_pid_fname);

/* Initialize cross-process accept lock */

lock_fname = apr_psprintf(_pconf, "%s.%u",

ap_server_root_relative(_pconf, lock_fname),

my_pid);

rv = SAFE_ACCEPT(apr_create_lock(&process_accept_mutex, APR_MUTEX,

APR_CROSS_PROCESS, lock_fname, _pconf));

if (rv != APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,

"Couldn't create cross-process lock");

return 1;

}

if (!is_graceful) {

reinit_scoreboard(pconf);

}

/* Initialize the child table */

if (!is_graceful) {

for (i = 0; i < HARD_SERVER_LIMIT; i++) {

ap_child_table[i].pid = 0;

}

}

set_signals();

/* If we're doing a graceful_restart then we're going to see a lot

remaining_children_to_start = num_daemons;

if (!is_graceful) {

remaining_children_to_start = \

startup_children(remaining_children_to_start);

}

else {

/* give the system some time to recover before kicking into

hold_off_on_exponential_spawning = 10;

}

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,

"%s configured -- resuming normal operations",

ap_get_server_version());

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, ap_server_conf,

"Server built: %s", ap_get_server_built());

restart_pending = shutdown_pending = 0;

server_main_loop(remaining_children_to_start);

if (shutdown_pending) {

/* Time to gracefully shut down:

if (unixd_killpg(getpgrp(), SIGTERM) < 0) {

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,

"killpg SIGTERM");

}

ap_reclaim_child_processes(1); /* Start with SIGTERM */

/* cleanup pid file on normal shutdown */

{

const char *pidfile = NULL;

pidfile = ap_server_root_relative (pconf, ap_pid_fname);

if ( pidfile != NULL && unlink(pidfile) == 0)

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0,

ap_server_conf,

"removed PID file %s (pid=%ld)",

pidfile, (long)getpid());

}

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0,

ap_server_conf, "caught SIGTERM, shutting down");

return 1;

}

/* we've been told to restart */

apr_signal(SIGHUP, SIG_IGN);

if (one_process) {

/* not worth thinking about */

return 1;

}

if (is_graceful) {

char char_of_death = '!';

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,

"SIGWINCH received. Doing graceful restart");

/* This is mostly for debugging... so that we know what is still

for (i = 0; i < num_daemons; ++i) {

if (ap_child_table[i].pid) {

ap_child_table[i].status = SERVER_DYING;

}

}

/* give the children the signal to die */

for (i = 0; i < num_daemons;) {

if ((rv = apr_write(pipe_of_death_out, &char_of_death, &one)) != APR_SUCCESS) {

if (APR_STATUS_IS_EINTR(rv)) continue;

ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,

"write pipe_of_death");

}

i++;

}

}

else {

/* Kill 'em all. Since the child acts the same on the parents SIGTERM

if (unixd_killpg(getpgrp(), SIGTERM) < 0) {

ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,

"killpg SIGTERM");

}

ap_reclaim_child_processes(1); /* Start with SIGTERM */

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0,

ap_server_conf, "SIGHUP received. Attempting to restart");

}

return 0;

}

static void perchild_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)

{

static int restart_num = 0;

int no_detach = 0;

int i;

one_process = !!getenv("ONE_PROCESS");

no_detach = !!getenv("NO_DETACH");

/* sigh, want this only the second time around */

if (restart_num++ == 1) {

is_graceful = 0;

if (!one_process && !no_detach) {

apr_detach();

}

my_pid = getpid();

}

unixd_pre_config();

ap_listen_pre_config();

num_daemons = DEFAULT_NUM_DAEMON;

threads_to_start = DEFAULT_START_THREAD;

min_spare_threads = DEFAULT_MIN_SPARE_THREAD;

max_spare_threads = DEFAULT_MAX_SPARE_THREAD;

max_threads = HARD_THREAD_LIMIT;

ap_pid_fname = DEFAULT_PIDLOG;

ap_scoreboard_fname = DEFAULT_SCOREBOARD;

lock_fname = DEFAULT_LOCKFILE;

max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;

ap_perchild_set_maintain_connection_status(1);

curr_child_num = 0;

apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));

for (i = 0; i < HARD_SERVER_LIMIT; i++) {

child_info_table[i].uid = -1;

child_info_table[i].gid = -1;

child_info_table[i].sd = -1;

}

for (i = 0; i < HARD_THREAD_LIMIT; i++) {

thread_socket_table[i] = -1;

}

}

static int pass_request(request_rec *r)

{

apr_socket_t *thesock = r->connection->client->bsock;

struct msghdr msg;

struct cmsghdr *cmsg;

int sfd;

struct iovec iov;

char *foo = r->connection->client->inbase;

int len = r->connection->client->inptr - r->connection->client->inbase;

perchild_server_conf *sconf = (perchild_server_conf *)

ap_get_module_config(r->server->module_config,

&mpm_perchild_module);

apr_get_os_sock(&sfd, thesock);

iov.iov_base = (char *)sconf->fullsockname;

iov.iov_len = strlen(sconf->fullsockname) + 1;

msg.msg_name = NULL;

msg.msg_namelen = 0;

msg.msg_iov = &iov;

msg.msg_iovlen = 1;

cmsg = apr_palloc(r->pool, sizeof(*cmsg) + sizeof(sfd));

cmsg->cmsg_len = sizeof(*cmsg) + sizeof(int);

cmsg->cmsg_level = SOL_SOCKET;

cmsg->cmsg_type = SCM_RIGHTS;

memcpy(CMSG_DATA(cmsg), &sfd, sizeof(sfd));

msg.msg_control = cmsg;

msg.msg_controllen = cmsg->cmsg_len;

msg.msg_flags=0;