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server.c
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server.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* Cherokee
*
* Authors:
* Alvaro Lopez Ortega <alvaro@alobbs.com>
*
* Copyright (C) 2001-2010 Alvaro Lopez Ortega
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "common-internal.h"
#include "server-protected.h"
#include "server.h"
#include "bind.h"
#include "spawner.h"
#include "error_log.h"
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
#ifdef HAVE_GRP_H
# include <grp.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif
#ifdef HAVE_NETINET_TCP_H
# include <netinet/tcp.h>
#endif
#include <errno.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#include <signal.h>
#include <dirent.h>
#include <unistd.h>
#include "thread.h"
#include "socket.h"
#include "connection.h"
#include "mime.h"
#include "util.h"
#include "fdpoll.h"
#include "fdpoll-protected.h"
#include "regex.h"
#include "connection-protected.h"
#include "nonce.h"
#include "config_reader.h"
#include "init.h"
#include "bogotime.h"
#include "source_interpreter.h"
#include "post_track.h"
#define ENTRIES "core,server"
#define GRNAM_BUF_LEN 8192
ret_t
cherokee_server_new (cherokee_server_t **srv)
{
ret_t ret;
CHEROKEE_CNEW_STRUCT(1, n, server);
/* Thread list
*/
INIT_LIST_HEAD(&(n->thread_list));
/* Sockets
*/
n->ipv6 = true;
n->fdpoll_method = cherokee_poll_UNSET;
/* Exit related
*/
n->wanna_exit = false;
n->wanna_reinit = false;
/* Server config
*/
n->tls_enabled = false;
n->cryptor = NULL;
n->post_track = NULL;
n->timeout = 5;
n->fdwatch_msecs = 1000;
n->start_time = time(NULL);
n->keepalive = true;
n->keepalive_max = MAX_KEEPALIVE;
n->chunked_encoding = true;
n->thread_num = -1;
n->thread_policy = -1;
n->chrooted = false;
n->user_orig = getuid();
n->user = n->user_orig;
n->group_orig = getgid();
n->group = n->group_orig;
n->fdlimit_custom = MAX (FD_NUM_CUSTOM_LIMIT, cherokee_fdlimit);
n->fdlimit_available = -1;
n->conns_max = 0;
n->conns_reuse_max = -1;
n->listen_queue = 1024;
n->sendfile.min = SENDFILE_MIN_SIZE;
n->sendfile.max = SENDFILE_MAX_SIZE;
n->mime = NULL;
n->icons = NULL;
n->regexs = NULL;
n->collector = NULL;
cherokee_buffer_init (&n->chroot);
cherokee_buffer_init (&n->timeout_header);
cherokee_buffer_init (&n->panic_action);
cherokee_buffer_add_str (&n->panic_action, CHEROKEE_PANIC_PATH);
/* IO Cache cache
*/
n->iocache = NULL;
n->iocache_enabled = true;
/* Regexs
*/
cherokee_regex_table_new (&n->regexs);
return_if_fail (n->regexs != NULL, ret_nomem);
/* Active nonces
*/
ret = cherokee_nonce_table_new (&n->nonces);
if (unlikely(ret < ret_ok)) return ret;
/* Module loader
*/
cherokee_plugin_loader_init (&n->loader);
/* Virtual servers list
*/
INIT_LIST_HEAD (&n->vservers);
INIT_LIST_HEAD (&n->listeners);
CHEROKEE_MUTEX_INIT (&n->listeners_mutex, CHEROKEE_MUTEX_FAST);
/* Encoders
*/
cherokee_avl_init (&n->encoders);
/* Server string
*/
n->server_token = cherokee_version_full;
/* Logs
*/
cherokee_avl_init (&n->logger_writers_index);
INIT_LIST_HEAD (&n->logger_writers);
n->log_flush_next = 0;
n->log_flush_lapse = LOGGER_FLUSH_LAPSE;
/* Programmed tasks
*/
n->nonces_cleanup_next = 0;
n->nonces_cleanup_lapse = NONCE_CLEANUP_LAPSE;
/* PID
*/
cherokee_buffer_init (&n->pidfile);
/* Config
*/
cherokee_config_node_init (&n->config);
/* Information sources: SCGI, FCGI
*/
cherokee_avl_init (&n->sources);
/* Init the default error writer
*/
ret = cherokee_logger_writer_new_stderr (&n->error_writer);
if (ret != ret_ok) {
return ret_error;
}
ret = cherokee_logger_writer_open (n->error_writer);
if (ret != ret_ok) {
return ret_error;
}
cherokee_error_set_default (n->error_writer);
/* Return the object
*/
*srv = n;
return ret_ok;
}
static ret_t
destroy_thread (cherokee_thread_t *thread)
{
cherokee_thread_wait_end (thread);
cherokee_thread_free (thread);
return ret_ok;
}
ret_t
cherokee_server_free (cherokee_server_t *srv)
{
cherokee_list_t *i, *j;
/* Flag the threads: server is exiting
*/
list_for_each (i, &srv->thread_list) {
THREAD(i)->exit = true;
CHEROKEE_MUTEX_UNLOCK (&srv->listeners_mutex);
}
/* Kill the child processes
*/
cherokee_avl_mrproper (&srv->sources, (cherokee_func_free_t)cherokee_source_free);
/* Spawn mechanism
*/
cherokee_spawner_free();
/* Threads
*/
list_for_each_safe (i, j, &srv->thread_list) {
TRACE(ENTRIES, "Destroying thread %p\n", i);
destroy_thread (THREAD(i));
}
TRACE(ENTRIES, "Destroying main_thread %p\n", srv->main_thread);
cherokee_thread_free (srv->main_thread);
/* File descriptors
*/
list_for_each_safe (i, j, &srv->listeners) {
cherokee_list_del(i);
cherokee_bind_free (BIND(i));
}
CHEROKEE_MUTEX_DESTROY (&srv->listeners_mutex);
/* Attached objects
*/
cherokee_avl_mrproper (&srv->encoders, NULL);
cherokee_mime_free (srv->mime);
cherokee_icons_free (srv->icons);
cherokee_regex_table_free (srv->regexs);
if (srv->iocache) {
cherokee_iocache_free (srv->iocache);
}
if (srv->cryptor) {
cherokee_cryptor_free (srv->cryptor);
}
if (srv->post_track) {
MODULE(srv->post_track)->free (srv->post_track);
}
if (srv->collector) {
cherokee_collector_free (srv->collector);
}
cherokee_nonce_table_free (srv->nonces);
/* Logs
*/
list_for_each_safe (i, j, &srv->logger_writers) {
cherokee_logger_writer_free (LOGGER_WRITER(i));
}
cherokee_avl_mrproper (&srv->logger_writers_index, NULL);
/* Virtual servers
*/
list_for_each_safe (i, j, &srv->vservers) {
cherokee_virtual_server_free (VSERVER(i));
}
cherokee_buffer_mrproper (&srv->timeout_header);
cherokee_buffer_mrproper (&srv->chroot);
cherokee_buffer_mrproper (&srv->pidfile);
cherokee_buffer_mrproper (&srv->panic_action);
/* Module loader: It must be the last action to be performed
* because it will close all the opened modules.
*/
cherokee_plugin_loader_mrproper (&srv->loader);
TRACE(ENTRIES, "The server %p has been freed\n", srv);
free (srv);
return ret_ok;
}
static ret_t
change_execution_user (cherokee_server_t *srv, struct passwd *ent)
{
int error;
/* Reset `groups' attributes.
*/
if (srv->user_orig == 0) {
error = initgroups (ent->pw_name, srv->group);
if (error == -1) {
LOG_WARNING (CHEROKEE_ERROR_SERVER_INITGROUPS, ent->pw_name, srv->group);
}
}
/* Change of group requested
*/
if (srv->group != srv->group_orig) {
error = setgid (srv->group);
if (error != 0) {
LOG_WARNING (CHEROKEE_ERROR_SERVER_SETGID, srv->group, srv->group_orig);
}
}
/* Change of user requested
*/
if (srv->user != srv->user_orig) {
error = setuid (srv->user);
if (error != 0) {
LOG_WARNING (CHEROKEE_ERROR_SERVER_SETUID, srv->user, srv->user_orig);
}
}
return ret_ok;
}
void
cherokee_server_set_min_latency (cherokee_server_t *srv, int msecs)
{
srv->fdwatch_msecs = msecs;
}
static ret_t
print_banner (cherokee_server_t *srv)
{
ret_t ret;
const char *method;
cherokee_list_t *i;
cherokee_buffer_t *buf;
size_t b = 0;
size_t len = 0;
cherokee_buffer_t n = CHEROKEE_BUF_INIT;
/* First line
*/
cherokee_buffer_add_va (&n, "Cherokee Web Server %s (%s): ", PACKAGE_VERSION, __DATE__);
/* Ports
*/
cherokee_list_get_len (&srv->listeners, &len);
if (len <= 1) {
cherokee_buffer_add_str (&n, "Listening on port ");
} else {
cherokee_buffer_add_str (&n, "Listening on ports ");
}
list_for_each (i, &srv->listeners) {
cherokee_bind_t *bind = BIND(i);
b += 1;
if (! cherokee_buffer_is_empty(&bind->ip)) {
if (strchr (bind->ip.buf, ':')) {
cherokee_buffer_add_va (&n, "[%s]", bind->ip.buf);
} else {
cherokee_buffer_add_buffer (&n, &bind->ip);
}
} else {
cherokee_buffer_add_str (&n, "ALL");
}
cherokee_buffer_add_char (&n, ':');
cherokee_buffer_add_ulong10 (&n, bind->port);
if (bind->socket.is_tls == TLS) {
cherokee_buffer_add_str (&n, "(TLS)");
}
if (b < len)
cherokee_buffer_add_str (&n, ", ");
}
/* Chroot
*/
if (srv->chrooted) {
cherokee_buffer_add_str (&n, ", chrooted");
}
/* TLS / SSL
*/
if (srv->tls_enabled) {
cherokee_module_get_name (MODULE(srv->cryptor), (const char **)&method);
cherokee_buffer_add_va (&n, ", with TLS support via %s", method);
} else {
cherokee_buffer_add_str (&n, ", TLS disabled");
}
/* IPv6
*/
#ifdef HAVE_IPV6
if (srv->ipv6) {
cherokee_buffer_add_str (&n, ", IPv6 enabled");
} else
#endif
cherokee_buffer_add_str (&n, ", IPv6 disabled");
/* Polling method
*/
cherokee_fdpoll_get_method_str (srv->main_thread->fdpoll, &method);
cherokee_buffer_add_va (&n, ", using %s", method);
/* File descriptor limit
*/
cherokee_buffer_add_va (&n, ", %d fds system limit, max. %d connections",
cherokee_fdlimit, srv->conns_max);
/* I/O-cache
*/
if (srv->iocache) {
cherokee_buffer_add_str (&n, ", caching I/O");
}
/* Threading stuff
*/
if (srv->thread_num <= 1) {
cherokee_buffer_add_str (&n, ", single thread");
} else {
cherokee_buffer_add_va (&n, ", %d threads", srv->thread_num);
cherokee_buffer_add_va (&n, ", %d connections per thread", srv->main_thread->conns_max);
switch (srv->thread_policy) {
#ifdef HAVE_PTHREAD
case SCHED_FIFO:
cherokee_buffer_add_str (&n, ", FIFO scheduling policy");
break;
case SCHED_RR:
cherokee_buffer_add_str (&n, ", RR scheduling policy");
break;
#endif
default:
cherokee_buffer_add_str (&n, ", standard scheduling policy");
break;
}
}
/* Trace
*/
ret = cherokee_trace_get_trace (&buf);
if ((ret == ret_ok) &&
(! cherokee_buffer_is_empty (buf)))
{
cherokee_buffer_add_va (&n, ", tracing '%s'", buf->buf);
}
/* Print it!
*/
cherokee_print_wrapped (&n);
cherokee_buffer_mrproper (&n);
return ret_ok;
}
static ret_t
initialize_server_threads (cherokee_server_t *srv)
{
ret_t ret;
cint_t i;
size_t listen_fds;
cuint_t fds_per_thread;
cuint_t conns_per_thread;
cuint_t keepalive_per_thread;
cuint_t conns_keepalive_max;
/* Reset max. conns value
*/
srv->conns_max = 0;
/* Set fd upper limit for threads.
*/
#ifdef HAVE_PTHREAD
if (srv->thread_num > (srv->fdlimit_available / FD_NUM_MIN_PER_THREAD))
srv->thread_num = (srv->fdlimit_available / FD_NUM_MIN_PER_THREAD);
if (srv->thread_num < 1)
srv->thread_num = 1;
#else
srv->thread_num = 1;
#endif
/* Set fds and connections limits
*/
ret = cherokee_list_get_len (&srv->listeners, &listen_fds);
if (ret != ret_ok) {
return ret;
}
fds_per_thread = (srv->fdlimit_available / srv->thread_num);
fds_per_thread -= listen_fds;
/* Get fdpoll limits.
*/
if (srv->fdpoll_method != cherokee_poll_UNSET) {
cuint_t sys_fd_limit = 0;
cuint_t poll_fd_limit = 0;
ret = cherokee_fdpoll_get_fdlimits (srv->fdpoll_method, &sys_fd_limit, &poll_fd_limit);
if (ret != ret_ok) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_GET_FDLIMIT,
(int) srv->fdpoll_method);
return ret_error;
}
/* Test system fd limit (no autotune here)
*/
if ((sys_fd_limit > 0) &&
(cherokee_fdlimit > sys_fd_limit)) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_FDS_SYS_LIMIT,
cherokee_fdlimit, sys_fd_limit);
return ret_error;
}
/* If polling set limit has too many fds, then
* decrease that number.
*/
if ((poll_fd_limit > 0) &&
(fds_per_thread > poll_fd_limit))
{
LOG_WARNING (CHEROKEE_ERROR_SERVER_THREAD_POLL,
fds_per_thread, poll_fd_limit);
fds_per_thread = poll_fd_limit - listen_fds;
}
}
/* Max conn number: Supposes two fds per connection
*/
srv->conns_max = ((srv->fdlimit_available - listen_fds) / 2);
if (srv->conns_max > 2)
srv->conns_max -= 1;
/* Max keep-alive connections:
* Limit over which a thread doesn't allow keepalive
*/
conns_keepalive_max = srv->conns_max - (srv->conns_max / 16);
if (conns_keepalive_max + 6 > srv->conns_max)
conns_keepalive_max = srv->conns_max - 6;
/* Per thread limits
*/
conns_per_thread = (srv->conns_max / srv->thread_num);
keepalive_per_thread = (conns_keepalive_max / srv->thread_num);
/* Create the main thread (only structures, not a real thread)
*/
ret = cherokee_thread_new (&srv->main_thread, srv, thread_sync,
srv->fdpoll_method,
cherokee_fdlimit,
fds_per_thread,
conns_per_thread,
keepalive_per_thread);
if (unlikely(ret < ret_ok)) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_NEW_THREAD, ret);
return ret;
}
/* If Cherokee is compiled in single thread mode, it has to
* add the server socket to the fdpoll of the sync thread
*/
if (srv->thread_num == 1) {
cherokee_list_t *j;
list_for_each (j, &srv->listeners) {
ret = cherokee_fdpoll_add (srv->main_thread->fdpoll,
S_SOCKET_FD(BIND(j)->socket),
FDPOLL_MODE_READ);
if (ret < ret_ok)
return ret;
}
}
/* If Cherokee has been compiled in multi-thread mode,
* then it may need to launch other threads.
*/
#ifdef HAVE_PTHREAD
for (i = 0; i < srv->thread_num - 1; i++) {
cherokee_thread_t *thread;
/* Create a real thread.
*/
ret = cherokee_thread_new (&thread, srv, thread_async,
srv->fdpoll_method,
cherokee_fdlimit,
fds_per_thread,
conns_per_thread,
keepalive_per_thread);
if (unlikely(ret < ret_ok)) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_NEW_THREAD, ret);
return ret;
}
/* Add it to the thread list
*/
cherokee_list_add (LIST(thread), &srv->thread_list);
}
#endif
return ret_ok;
}
static ret_t
initialize_loggers (cherokee_server_t *srv)
{
ret_t ret;
cherokee_list_t *i;
/* Initialize the error writers
*/
list_for_each (i, &srv->vservers) {
cherokee_logger_writer_t *writer;
writer = VSERVER(i)->error_writer;
if (writer == NULL) {
continue;
}
ret = cherokee_logger_writer_open (writer);
if (ret != ret_ok) {
return ret;
}
}
/* Initialize loggers as well
*/
list_for_each (i, &srv->vservers) {
cherokee_logger_t *logger;
logger = VSERVER(i)->logger;
if (logger == NULL) {
continue;
}
ret = cherokee_logger_init (logger);
if (ret != ret_ok) {
return ret;
}
}
return ret_ok;
}
static ret_t
vservers_check_tls (cherokee_server_t *srv)
{
ret_t ret;
cherokee_list_t *i;
cuint_t num = 0;
list_for_each (i, &srv->vservers) {
ret = cherokee_virtual_server_has_tls (VSERVER(i));
if (ret == ret_ok) {
if (srv->cryptor == NULL) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_NO_CRYPTOR,
VSERVER(i)->name.buf);
return ret_error;
}
TRACE (ENTRIES, "Virtual Server %s: TLS enabled\n", VSERVER(i)->name.buf);
return ret_ok;
}
num += 1;
}
TRACE (ENTRIES, "None of the %d virtual servers use TLS\n", num);
return ret_not_found;
}
static ret_t
init_vservers_tls (cherokee_server_t *srv)
{
ret_t ret;
cherokee_list_t *i;
cuint_t ok = 0;
cherokee_boolean_t error = false;
/* Initialize TLS in all the virtual servers
*/
list_for_each (i, &srv->vservers) {
cherokee_virtual_server_t *vserver = VSERVER(i);
ret = cherokee_virtual_server_init_tls (vserver);
if (ret < ret_ok) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_TLS_INIT,
cherokee_buffer_is_empty(&vserver->name) ? "unknown" : vserver->name.buf);
error = true;
} else if (ret == ret_ok) {
ok += 1;
}
}
if (error)
return ret_error;
/* Ensure 'default' supports TLS/SSL
*/
if ((ok > 0) &&
(VSERVER(srv->vservers.prev)->cryptor == NULL))
{
LOG_CRITICAL_S (CHEROKEE_ERROR_SERVER_TLS_DEFAULT);
return ret_error;
}
return ret_ok;
}
static ret_t
raise_fd_limit (cherokee_server_t *srv, cint_t new_limit)
{
ret_t ret;
UNUSED(srv);
/* Sanity check
*/
if (new_limit < FD_NUM_MIN_SYSTEM)
new_limit = FD_NUM_MIN_SYSTEM;
/* Set it
*/
ret = cherokee_sys_fdlimit_set (new_limit);
if (ret < ret_ok) {
LOG_WARNING (CHEROKEE_ERROR_SERVER_FD_SET, new_limit);
}
/* Update the new value
*/
ret = cherokee_sys_fdlimit_get (&cherokee_fdlimit);
if (ret < ret_ok) {
LOG_CRITICAL_S (CHEROKEE_ERROR_SERVER_FD_GET);
return ret_error;
}
return ret_ok;
}
static ret_t
initialize_collectors (cherokee_server_t *srv)
{
ret_t ret;
cherokee_list_t *i;
cherokee_virtual_server_t *vsrv;
if (srv->collector == NULL) {
return ret_ok;
}
TRACE (ENTRIES, "Initializing the main information collector %s", "\n");
ret = cherokee_collector_init (srv->collector);
if (ret != ret_ok) {
return ret_error;
}
list_for_each (i, &srv->vservers) {
vsrv = VSERVER(i);
if (vsrv->collector == NULL) {
continue;
}
TRACE (ENTRIES, "Initializing collector for vserver '%s'\n", vsrv->name.buf);
ret = cherokee_collector_vsrv_init (vsrv->collector, vsrv);
if (ret != ret_ok) {
return ret_error;
}
}
return ret_ok;
}
ret_t
cherokee_server_initialize (cherokee_server_t *srv)
{
int re;
ret_t ret;
cherokee_list_t *i, *tmp;
struct passwd *ent = NULL;
/* Build the server string
*/
cherokee_buffer_add_va (&srv->timeout_header, "Keep-Alive: timeout=%d"CRLF, srv->timeout);
/* Set the FD number limit
*/
if (srv->fdlimit_custom != -1) {
ret = raise_fd_limit (srv, srv->fdlimit_custom);
if (ret < ret_ok)
return ret;
}
/* Verify if there are enough fds.
*/
if (cherokee_fdlimit < FD_NUM_MIN_SYSTEM) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_LOW_FD_LIMIT,
cherokee_fdlimit, FD_NUM_MIN_SYSTEM);
return ret_error;
}
/* Set the max number of usable file descriptors
* NOTE: fdlimit_available is roughly half of max. system
* limit because for each accepted connection we reserve
* 1 spare fd that can be used for opening a file or for
* making a new connection to a backend server
* (i.e. FastCGI, SCGI, mirror, etc.).
*/
srv->fdlimit_available = (cherokee_fdlimit - FD_NUM_SPARE);
if (srv->fdlimit_available < FD_NUM_MIN_AVAILABLE) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_LOW_FD_LIMIT,
srv->fdlimit_available, FD_NUM_MIN_AVAILABLE);
return ret_error;
}
/* Init the SSL/TLS support
*/
ret = vservers_check_tls(srv);
switch (ret) {
case ret_ok:
srv->tls_enabled = true;
break;
case ret_not_found:
srv->tls_enabled = false;
break;
case ret_error:
return ret_error;
default:
RET_UNKNOWN(ret);
return ret_error;
}
if (srv->tls_enabled) {
/* Init TLS
*/
ret = init_vservers_tls (srv);
if (ret != ret_ok)
return ret;
} else {
/* Ensure no TLS ports are bound
*/
list_for_each_safe (i, tmp, &srv->listeners) {
if (! BIND_IS_TLS(i))
continue;
LOG_WARNING (CHEROKEE_ERROR_SERVER_IGNORE_TLS, BIND(i)->port);
cherokee_list_del (i);
cherokee_bind_free (BIND(i));
}
}
/* Ensure there is at least one listener
*/
if (cherokee_list_empty (&srv->listeners)) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_NO_BIND);
return ret_error;
}
/* Initialize the incoming sockets
*/
list_for_each (i, &srv->listeners) {
ret = cherokee_bind_init_port (BIND(i),
srv->listen_queue,
srv->ipv6,
srv->server_token);
if (ret != ret_ok)
return ret;
}
/* Verify the thread number and force it within sane limits.
* See also subsequent fdlimit_per_threads.
*/
#ifdef HAVE_PTHREAD
if (srv->thread_num < 1) {
srv->thread_num = cherokee_cpu_number * 5;
}
/* Limit the number of threads
* so that each thread has at least 2 fds available.
*/
if (srv->thread_num > (srv->fdlimit_available / FD_NUM_MIN_PER_THREAD)) {
srv->thread_num = (srv->fdlimit_available / FD_NUM_MIN_PER_THREAD);
if (srv->thread_num < 1)
srv->thread_num = 1;
}
#else
srv->thread_num = 1;
#endif
/* Check the number of reusable connections
*/
if (srv->conns_reuse_max == -1)
srv->conns_reuse_max = DEFAULT_CONN_REUSE;
if (srv->conns_reuse_max > srv->fdlimit_available)
srv->conns_reuse_max = srv->fdlimit_available;
/* Get the passwd file entry before chroot
*/
if ((srv->user != srv->user_orig) ||
(srv->group != srv->group_orig))
{
ent = getpwuid (srv->user);
if (ent == NULL) {
LOG_CRITICAL (CHEROKEE_ERROR_SERVER_UID_GET, srv->user);
return ret_error;
}
}
/* Spawning mechanism
*/
if (cherokee_spawn_shared.mem == NULL) {
cherokee_spawner_init();
}
/* Initialize loggers
*/
ret = initialize_loggers (srv);
if (unlikely(ret < ret_ok)) {
return ret;
}
/* Chroot
*/
if (! cherokee_buffer_is_empty (&srv->chroot)) {
/* Jail the process */
re = chroot (srv->chroot.buf);
srv->chrooted = (re == 0);
if (srv->chrooted == 0) {
LOG_ERRNO (errno, cherokee_err_error,
CHEROKEE_ERROR_SERVER_CHROOT, srv->chroot.buf);
return ret_error;
}
}