/*
Unix SMB/Netbios implementation.
SPOOLSS Daemon
- Copyright (C) Simo Sorce 2010
+ Copyright (C) Simo Sorce <idra@samba.org> 2010-2011
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "messages.h"
#include "include/printing.h"
#include "printing/nt_printing_migrate_internal.h"
+#include "printing/queue_process.h"
+#include "printing/pcap.h"
+#include "printing/load.h"
#include "ntdomain.h"
#include "librpc/gen_ndr/srv_winreg.h"
#include "librpc/gen_ndr/srv_spoolss.h"
#include "rpc_server/spoolss/srv_spoolss_nt.h"
#include "librpc/rpc/dcerpc_ep.h"
#include "lib/server_prefork.h"
+#include "lib/server_prefork_util.h"
#define SPOOLSS_PIPE_NAME "spoolss"
#define DAEMON_NAME "spoolssd"
-#define SPOOLSS_MIN_CHILDREN 5
-#define SPOOLSS_MAX_CHILDREN 25
-#define SPOOLSS_SPAWN_RATE 5
-#define SPOOLSS_MIN_LIFE 60 /* 1 minute minimum life time */
-
-#define SPOOLSS_ALL_FINE 0x00
-#define SPOOLSS_NEW_MAX 0x01
-#define SPOLLSS_ENOSPC 0x02
+static struct server_id parent_id;
+static struct prefork_pool *spoolss_pool = NULL;
+static int spoolss_child_id = 0;
+
+static struct pf_daemon_config default_pf_spoolss_cfg = {
+ .prefork_status = PFH_INIT,
+ .min_children = 5,
+ .max_children = 25,
+ .spawn_rate = 5,
+ .max_allowed_clients = 100,
+ .child_min_life = 60 /* 1 minute minimum life time */
+};
+static struct pf_daemon_config pf_spoolss_cfg = { 0 };
-static int spoolss_min_children;
-static int spoolss_max_children;
-static int spoolss_spawn_rate;
-static int spoolss_prefork_status;
+pid_t start_spoolssd(struct tevent_context *ev_ctx,
+ struct messaging_context *msg_ctx);
-static void spoolss_prefork_config(void)
+static void spoolss_reopen_logs(int child_id)
{
- static int spoolss_prefork_config_init = false;
- const char *prefork_str;
- int min, max, rate;
- bool use_defaults = false;
- int ret;
-
- if (!spoolss_prefork_config_init) {
- spoolss_prefork_status = SPOOLSS_ALL_FINE;
- spoolss_min_children = 0;
- spoolss_max_children = 0;
- spoolss_spawn_rate = 0;
- spoolss_prefork_config_init = true;
- }
+ char *lfile = lp_logfile();
+ char *ext;
+ int rc;
- prefork_str = lp_parm_const_string(GLOBAL_SECTION_SNUM,
- "spoolssd", "prefork", "none");
- if (strcmp(prefork_str, "none") == 0) {
- use_defaults = true;
+ if (child_id) {
+ rc = asprintf(&ext, "%s.%d", DAEMON_NAME, child_id);
} else {
- ret = sscanf(prefork_str, "%d:%d:%d", &min, &max, &rate);
- if (ret != 3) {
- DEBUG(0, ("invalid format for spoolssd:prefork!\n"));
- use_defaults = true;
- }
- }
-
- if (use_defaults) {
- min = SPOOLSS_MIN_CHILDREN;
- max = SPOOLSS_MAX_CHILDREN;
- rate = SPOOLSS_SPAWN_RATE;
+ rc = asprintf(&ext, "%s", DAEMON_NAME);
}
- if (max > spoolss_max_children && spoolss_max_children != 0) {
- spoolss_prefork_status |= SPOOLSS_NEW_MAX;
+ if (rc == -1) {
+ return;
}
- spoolss_min_children = min;
- spoolss_max_children = max;
- spoolss_spawn_rate = rate;
-}
-
-void start_spoolssd(struct tevent_context *ev_ctx,
- struct messaging_context *msg_ctx);
-
-static void spoolss_reopen_logs(void)
-{
- char *lfile = lp_logfile();
- int rc;
-
+ rc = 0;
if (lfile == NULL || lfile[0] == '\0') {
- rc = asprintf(&lfile, "%s/log.%s", get_dyn_LOGFILEBASE(), DAEMON_NAME);
- if (rc > 0) {
- lp_set_logfile(lfile);
- SAFE_FREE(lfile);
- }
+ rc = asprintf(&lfile, "%s/log.%s",
+ get_dyn_LOGFILEBASE(), ext);
} else {
- if (strstr(lfile, DAEMON_NAME) == NULL) {
- rc = asprintf(&lfile, "%s.%s", lp_logfile(), DAEMON_NAME);
- if (rc > 0) {
- lp_set_logfile(lfile);
- SAFE_FREE(lfile);
+ if (strstr(lfile, ext) == NULL) {
+ if (child_id) {
+ rc = asprintf(&lfile, "%s.%d",
+ lp_logfile(), child_id);
+ } else {
+ rc = asprintf(&lfile, "%s.%s",
+ lp_logfile(), ext);
}
}
}
+ if (rc > 0) {
+ lp_set_logfile(lfile);
+ SAFE_FREE(lfile);
+ }
+
+ SAFE_FREE(ext);
+
reopen_logs();
}
{
change_to_root_user();
lp_load(get_dyn_CONFIGFILE(), true, false, false, true);
- reload_printers(ev, msg);
+ load_printers(ev, msg);
- spoolss_reopen_logs();
- spoolss_prefork_config();
+ spoolss_reopen_logs(spoolss_child_id);
+ if (spoolss_child_id == 0) {
+ pfh_daemon_config(DAEMON_NAME,
+ &pf_spoolss_cfg,
+ &default_pf_spoolss_cfg);
+ pfh_manage_pool(ev, msg, &pf_spoolss_cfg, spoolss_pool);
+ }
}
static void smb_conf_updated(struct messaging_context *msg,
update_conf(ev_ctx, msg);
}
+static void update_pcap(struct tevent_context *ev_ctx,
+ struct messaging_context *msg_ctx)
+{
+ change_to_root_user();
+ delete_and_reload_printers(ev_ctx, msg_ctx);
+}
+
+static void pcap_updated(struct messaging_context *msg,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
+{
+ struct tevent_context *ev_ctx;
+
+ ev_ctx = talloc_get_type_abort(private_data, struct tevent_context);
+
+ DEBUG(10, ("Got message that pcap updated. Reloading.\n"));
+ update_pcap(ev_ctx, msg);
+}
+
static void spoolss_sig_term_handler(struct tevent_context *ev,
struct tevent_signal *se,
int signum,
}
}
-struct spoolss_hup_ctx {
- struct messaging_context *msg_ctx;
- struct prefork_pool *pfp;
-};
-
static void spoolss_sig_hup_handler(struct tevent_context *ev,
struct tevent_signal *se,
int signum,
void *siginfo,
void *pvt)
{
- struct spoolss_hup_ctx *hup_ctx;
+ struct messaging_context *msg_ctx;
- hup_ctx = talloc_get_type_abort(pvt, struct spoolss_hup_ctx);
+ msg_ctx = talloc_get_type_abort(pvt, struct messaging_context);
DEBUG(1,("Reloading printers after SIGHUP\n"));
- update_conf(ev, hup_ctx->msg_ctx);
+ update_conf(ev, msg_ctx);
/* relay to all children */
- prefork_send_signal_to_all(hup_ctx->pfp, SIGHUP);
+ if (spoolss_pool) {
+ prefork_send_signal_to_all(spoolss_pool, SIGHUP);
+ }
}
static void spoolss_setup_sig_hup_handler(struct tevent_context *ev_ctx,
- struct prefork_pool *pfp,
struct messaging_context *msg_ctx)
{
- struct spoolss_hup_ctx *hup_ctx;
struct tevent_signal *se;
- hup_ctx = talloc(ev_ctx, struct spoolss_hup_ctx);
- if (!hup_ctx) {
- exit_server("failed to setup SIGHUP handler");
- }
- hup_ctx->pfp = pfp;
- hup_ctx->msg_ctx = msg_ctx;
-
se = tevent_add_signal(ev_ctx,
ev_ctx,
SIGHUP, 0,
spoolss_sig_hup_handler,
- hup_ctx);
+ msg_ctx);
if (!se) {
exit_server("failed to setup SIGHUP handler");
}
return true;
}
-/* Childrens */
-
-struct spoolss_chld_sig_hup_ctx {
- struct messaging_context *msg_ctx;
- struct pf_worker_data *pf;
-};
+/* Children */
static void spoolss_chld_sig_hup_handler(struct tevent_context *ev,
struct tevent_signal *se,
void *siginfo,
void *pvt)
{
- struct spoolss_chld_sig_hup_ctx *shc;
+ struct messaging_context *msg_ctx;
- shc = talloc_get_type_abort(pvt, struct spoolss_chld_sig_hup_ctx);
-
- /* avoid wasting CPU cycles if we are going to exit soon anyways */
- if (shc->pf != NULL &&
- shc->pf->cmds == PF_SRV_MSG_EXIT) {
- return;
- }
+ msg_ctx = talloc_get_type_abort(pvt, struct messaging_context);
change_to_root_user();
DEBUG(1,("Reloading printers after SIGHUP\n"));
- reload_printers(ev, shc->msg_ctx);
- spoolss_reopen_logs();
+ load_printers(ev, msg_ctx);
+ spoolss_reopen_logs(spoolss_child_id);
}
static bool spoolss_setup_chld_hup_handler(struct tevent_context *ev_ctx,
- struct pf_worker_data *pf,
- struct messaging_context *msg_ctx)
+ struct messaging_context *msg_ctx,
+ struct pf_worker_data *pf)
{
- struct spoolss_chld_sig_hup_ctx *shc;
struct tevent_signal *se;
- shc = talloc(ev_ctx, struct spoolss_chld_sig_hup_ctx);
- if (!shc) {
- DEBUG(1, ("failed to setup SIGHUP handler"));
- return false;
- }
- shc->pf = pf;
- shc->msg_ctx = msg_ctx;
-
se = tevent_add_signal(ev_ctx,
ev_ctx,
SIGHUP, 0,
spoolss_chld_sig_hup_handler,
- shc);
+ msg_ctx);
if (!se) {
DEBUG(1, ("failed to setup SIGHUP handler"));
return false;
return true;
}
+static void parent_ping(struct messaging_context *msg_ctx,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
+{
+
+ /* The fact we received this message is enough to let make the event
+ * loop if it was idle. spoolss_children_main will cycle through
+ * spoolss_next_client at least once. That function will take whatever
+ * action is necessary */
+
+ DEBUG(10, ("Got message that the parent changed status.\n"));
+ return;
+}
+
static bool spoolss_child_init(struct tevent_context *ev_ctx,
- struct pf_worker_data *pf)
+ int child_id, struct pf_worker_data *pf)
{
NTSTATUS status;
struct rpc_srv_callbacks spoolss_cb;
- struct messaging_context *msg_ctx = server_messaging_context();
+ struct messaging_context *msg_ctx = messaging_init(NULL, ev_ctx);
bool ok;
status = reinit_after_fork(msg_ctx, ev_ctx,
- procid_self(), true);
+ true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
smb_panic("reinit_after_fork() failed");
}
- spoolss_reopen_logs();
+ spoolss_child_id = child_id;
+ spoolss_reopen_logs(child_id);
- ok = spoolss_setup_chld_hup_handler(ev_ctx, pf, msg_ctx);
+ ok = spoolss_setup_chld_hup_handler(ev_ctx, msg_ctx, pf);
if (!ok) {
return false;
}
- if (!serverid_register(procid_self(), FLAG_MSG_GENERAL)) {
+ if (!serverid_register(procid_self(),
+ FLAG_MSG_GENERAL |
+ FLAG_MSG_PRINT_GENERAL)) {
return false;
}
messaging_register(msg_ctx, ev_ctx,
MSG_SMB_CONF_UPDATED, smb_conf_updated);
+ messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
+ pcap_updated);
+ messaging_register(msg_ctx, ev_ctx,
+ MSG_PREFORK_PARENT_EVENT, parent_ping);
+
+ /* As soon as messaging is up check if pcap has been loaded already.
+ * If so then we probably missed a message and should load_printers()
+ * ourselves. If pcap has not been loaded yet, then ignore, we will get
+ * a message as soon as the bq process completes the reload. */
+ if (pcap_cache_loaded()) {
+ load_printers(ev_ctx, msg_ctx);
+ }
/* try to reinit rpc queues */
spoolss_cb.init = spoolss_init_cb;
return false;
}
- reload_printers(ev_ctx, msg_ctx);
-
return true;
}
struct tevent_context *ev_ctx;
struct messaging_context *msg_ctx;
struct pf_worker_data *pf;
- int listen_fd;
- int lock_fd;
-
- bool listening;
+ int listen_fd_size;
+ int *listen_fds;
};
static void spoolss_next_client(void *pvt);
static int spoolss_children_main(struct tevent_context *ev_ctx,
+ struct messaging_context *msg_ctx,
struct pf_worker_data *pf,
- int listen_fd, int lock_fd,
+ int child_id,
+ int listen_fd_size,
+ int *listen_fds,
void *private_data)
{
- struct messaging_context *msg_ctx = server_messaging_context();
struct spoolss_children_data *data;
bool ok;
int ret;
- ok = spoolss_child_init(ev_ctx, pf);
+ ok = spoolss_child_init(ev_ctx, child_id, pf);
if (!ok) {
return 1;
}
data->pf = pf;
data->ev_ctx = ev_ctx;
data->msg_ctx = msg_ctx;
- data->lock_fd = lock_fd;
- data->listen_fd = listen_fd;
- data->listening = false;
+ data->listen_fd_size = listen_fd_size;
+ data->listen_fds = listen_fds;
/* loop until it is time to exit */
while (pf->status != PF_WORKER_EXITING) {
data = talloc_get_type_abort(pvt, struct spoolss_children_data);
- if (data->pf->num_clients) {
- data->pf->num_clients--;
- } else {
- DEBUG(2, ("Invalid num clients, aborting!\n"));
- data->pf->status = PF_WORKER_EXITING;
- return;
- }
+ pfh_client_terminated(data->pf);
spoolss_next_client(pvt);
}
struct spoolss_new_client {
struct spoolss_children_data *data;
- struct sockaddr_un sunaddr;
- socklen_t addrlen;
+ struct tsocket_address *srv_addr;
+ struct tsocket_address *cli_addr;
};
static void spoolss_handle_client(struct tevent_req *req);
data = talloc_get_type_abort(pvt, struct spoolss_children_data);
- if (data->pf->num_clients == 0) {
- data->pf->status = PF_WORKER_IDLE;
- }
-
- if (data->pf->cmds == PF_SRV_MSG_EXIT) {
- DEBUG(2, ("Parent process commands we terminate!\n"));
- return;
- }
-
- if (data->listening ||
- data->pf->num_clients >= data->pf->allowed_clients) {
+ if (!pfh_child_allowed_to_accept(data->pf)) {
/* nothing to do for now we are already listening
- * or reached the number of clients we are allowed
- * to handle in parallel */
+ * or we are not allowed to listen further */
return;
}
return;
}
next->data = data;
- next->addrlen = sizeof(next->sunaddr);
req = prefork_listen_send(next, data->ev_ctx, data->pf,
- data->lock_fd, data->listen_fd,
- (struct sockaddr *)&next->sunaddr,
- &next->addrlen);
+ data->listen_fd_size,
+ data->listen_fds);
if (!req) {
DEBUG(1, ("Failed to make listening request!?\n"));
talloc_free(next);
return;
}
tevent_req_set_callback(req, spoolss_handle_client, next);
-
- data->listening = true;
}
static void spoolss_handle_client(struct tevent_req *req)
{
struct spoolss_children_data *data;
struct spoolss_new_client *client;
+ const DATA_BLOB ping = data_blob_null;
int ret;
int sd;
client = tevent_req_callback_data(req, struct spoolss_new_client);
data = client->data;
- ret = prefork_listen_recv(req, &sd);
+ ret = prefork_listen_recv(req, client, &sd,
+ &client->srv_addr, &client->cli_addr);
/* this will free the request too */
talloc_free(client);
- /* we are done listening */
- data->listening = false;
-
- if (ret > 0) {
- DEBUG(1, ("Failed to accept client connection!\n"));
- /* bail out if we are not serving any other client */
- if (data->pf->num_clients == 0) {
- data->pf->status = PF_WORKER_EXITING;
- }
- return;
- }
- if (ret == -2) {
- DEBUG(1, ("Server asks us to die!\n"));
- data->pf->status = PF_WORKER_EXITING;
+ if (ret != 0) {
+ DEBUG(6, ("No client connection was available after all!\n"));
return;
}
+ /* Warn parent that our status changed */
+ messaging_send(data->msg_ctx, parent_id,
+ MSG_PREFORK_CHILD_EVENT, &ping);
+
DEBUG(2, ("Spoolss preforked child %d got client connection!\n",
(int)(data->pf->pid)));
/* ==== Main Process Functions ==== */
-static void spoolssd_sig_chld_handler(struct tevent_context *ev_ctx,
- struct tevent_signal *se,
- int signum, int count,
- void *siginfo, void *pvt)
+extern pid_t background_lpq_updater_pid;
+static char *bq_logfile;
+
+static void check_updater_child(struct tevent_context *ev_ctx,
+ struct messaging_context *msg_ctx)
{
- struct prefork_pool *pfp;
- pid_t pid;
int status;
- bool ok;
- int active, total;
- int n, r;
-
- pfp = talloc_get_type_abort(pvt, struct prefork_pool);
-
- while ((pid = sys_waitpid(-1, &status, WNOHANG)) > 0) {
- ok = prefork_mark_pid_dead(pfp, pid);
- if (!ok) {
- DEBUG(1, ("Pid %d was not found in children pool!\n",
- (int)pid));
- }
- }
-
- /* now check we do not descent below the minimum */
- active = prefork_count_active_children(pfp, &total);
+ pid_t pid;
- n = 0;
- if (total < spoolss_min_children) {
- n = total - spoolss_min_children;
- } else if (total - active < (total / 4)) {
- n = spoolss_min_children;
+ if (background_lpq_updater_pid == -1) {
+ return;
}
- if (n > 0) {
- r = prefork_add_children(ev_ctx, pfp, n);
- if (r < n) {
- DEBUG(10, ("Tried to start %d children but only,"
- "%d were actually started.!\n", n, r));
- }
+ pid = sys_waitpid(background_lpq_updater_pid, &status, WNOHANG);
+ if (pid > 0) {
+ DEBUG(2, ("The background queue child died... Restarting!\n"));
+ pid = start_background_queue(ev_ctx, msg_ctx, bq_logfile);
+ background_lpq_updater_pid = pid;
}
-
-
}
-static bool spoolssd_setup_sig_chld_handler(struct tevent_context *ev_ctx,
- struct prefork_pool *pfp)
+static void child_ping(struct messaging_context *msg_ctx,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
{
- struct tevent_signal *se;
+ struct tevent_context *ev_ctx;
- se = tevent_add_signal(ev_ctx, ev_ctx, SIGCHLD, 0,
- spoolssd_sig_chld_handler, pfp);
- if (!se) {
- DEBUG(0, ("Failed to setup SIGCHLD handler!\n"));
- return false;
- }
+ ev_ctx = talloc_get_type_abort(private_data, struct tevent_context);
- return true;
+ DEBUG(10, ("Got message that a child changed status.\n"));
+ pfh_manage_pool(ev_ctx, msg_ctx, &pf_spoolss_cfg, spoolss_pool);
}
static bool spoolssd_schedule_check(struct tevent_context *ev_ctx,
- struct prefork_pool *pfp,
+ struct messaging_context *msg_ctx,
struct timeval current_time);
static void spoolssd_check_children(struct tevent_context *ev_ctx,
struct tevent_timer *te,
struct timeval current_time,
void *pvt);
+static void spoolssd_sigchld_handler(struct tevent_context *ev_ctx,
+ struct prefork_pool *pfp,
+ void *pvt)
+{
+ struct messaging_context *msg_ctx;
+
+ msg_ctx = talloc_get_type_abort(pvt, struct messaging_context);
+
+ /* run pool management so we can fork/retire or increase
+ * the allowed connections per child based on load */
+ pfh_manage_pool(ev_ctx, msg_ctx, &pf_spoolss_cfg, spoolss_pool);
+
+ /* also check if the updater child is alive and well */
+ check_updater_child(ev_ctx, msg_ctx);
+}
+
static bool spoolssd_setup_children_monitor(struct tevent_context *ev_ctx,
- struct prefork_pool *pfp)
+ struct messaging_context *msg_ctx)
{
bool ok;
- ok = spoolssd_setup_sig_chld_handler(ev_ctx, pfp);
- if (!ok) {
- return false;
- }
+ /* add our oun sigchld callback */
+ prefork_set_sigchld_callback(spoolss_pool,
+ spoolssd_sigchld_handler, msg_ctx);
- ok = spoolssd_schedule_check(ev_ctx, pfp, tevent_timeval_current());
+ ok = spoolssd_schedule_check(ev_ctx, msg_ctx,
+ tevent_timeval_current());
return ok;
}
static bool spoolssd_schedule_check(struct tevent_context *ev_ctx,
- struct prefork_pool *pfp,
+ struct messaging_context *msg_ctx,
struct timeval current_time)
{
struct tevent_timer *te;
/* check situation again in 10 seconds */
next_event = tevent_timeval_current_ofs(10, 0);
- /* check when the socket becomes readable, so that children
- * are checked only when there is some activity */
- te = tevent_add_timer(ev_ctx, pfp, next_event,
- spoolssd_check_children, pfp);
+ /* TODO: check when the socket becomes readable, so that children
+ * are checked only when there is some activity ? */
+ te = tevent_add_timer(ev_ctx, spoolss_pool, next_event,
+ spoolssd_check_children, msg_ctx);
if (!te) {
DEBUG(2, ("Failed to set up children monitoring!\n"));
return false;
struct timeval current_time,
void *pvt)
{
- struct prefork_pool *pfp;
- int active, total;
- int ret, n;
+ struct messaging_context *msg_ctx;
- pfp = talloc_get_type_abort(pvt, struct prefork_pool);
+ msg_ctx = talloc_get_type_abort(pvt, struct messaging_context);
- if ((spoolss_prefork_status & SPOOLSS_NEW_MAX) &&
- !(spoolss_prefork_status & SPOLLSS_ENOSPC)) {
- ret = prefork_expand_pool(pfp, spoolss_max_children);
- if (ret == ENOSPC) {
- spoolss_prefork_status |= SPOLLSS_ENOSPC;
- }
- spoolss_prefork_status &= ~SPOOLSS_NEW_MAX;
- }
+ pfh_manage_pool(ev_ctx, msg_ctx, &pf_spoolss_cfg, spoolss_pool);
- active = prefork_count_active_children(pfp, &total);
+ spoolssd_schedule_check(ev_ctx, msg_ctx, current_time);
+}
- if (total - active < spoolss_spawn_rate) {
- n = prefork_add_children(ev_ctx, pfp, spoolss_spawn_rate);
- if (n < spoolss_spawn_rate) {
- DEBUG(10, ("Tried to start 5 children but only,"
- "%d were actually started.!\n", n));
- }
- }
+static void print_queue_forward(struct messaging_context *msg,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
+{
+ messaging_send_buf(msg, pid_to_procid(background_lpq_updater_pid),
+ MSG_PRINTER_UPDATE, data->data, data->length);
+}
- if (total - active > spoolss_min_children) {
- if ((total - spoolss_min_children) >= spoolss_spawn_rate) {
- prefork_retire_children(pfp, spoolss_spawn_rate,
- time(NULL) - SPOOLSS_MIN_LIFE);
- }
- }
+static char *get_bq_logfile(void)
+{
+ char *lfile = lp_logfile();
+ int rc;
- ret = spoolssd_schedule_check(ev_ctx, pfp, current_time);
+ if (lfile == NULL || lfile[0] == '\0') {
+ rc = asprintf(&lfile, "%s/log.%s.bq",
+ get_dyn_LOGFILEBASE(), DAEMON_NAME);
+ } else {
+ rc = asprintf(&lfile, "%s.bq", lp_logfile());
+ }
+ if (rc == -1) {
+ lfile = NULL;
+ }
+ return lfile;
}
-void start_spoolssd(struct tevent_context *ev_ctx,
+pid_t start_spoolssd(struct tevent_context *ev_ctx,
struct messaging_context *msg_ctx)
{
- struct prefork_pool *pool;
struct rpc_srv_callbacks spoolss_cb;
struct dcerpc_binding_vector *v;
TALLOC_CTX *mem_ctx;
DEBUG(1, ("Forking SPOOLSS Daemon\n"));
+ /*
+ * Block signals before forking child as it will have to
+ * set its own handlers. Child will re-enable SIGHUP as
+ * soon as the handlers are set up.
+ */
+ BlockSignals(true, SIGTERM);
+ BlockSignals(true, SIGHUP);
+
pid = sys_fork();
if (pid == -1) {
- DEBUG(0, ("Failed to fork SPOOLSS [%s], aborting ...\n",
+ DEBUG(0, ("Failed to fork SPOOLSS [%s]\n",
strerror(errno)));
- exit(1);
}
- if (pid) {
- /* parent */
- return;
+ /* parent or error */
+ if (pid != 0) {
+
+ /* Re-enable SIGHUP before returnig */
+ BlockSignals(false, SIGTERM);
+ BlockSignals(false, SIGHUP);
+ return pid;
}
/* child */
status = reinit_after_fork(msg_ctx,
ev_ctx,
- procid_self(), true);
+ true);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
smb_panic("reinit_after_fork() failed");
}
- spoolss_reopen_logs();
- spoolss_prefork_config();
+ /* save the parent process id so the children can use it later */
+ parent_id = procid_self();
+
+ spoolss_reopen_logs(0);
+ pfh_daemon_config(DAEMON_NAME,
+ &pf_spoolss_cfg,
+ &default_pf_spoolss_cfg);
+
+ spoolss_setup_sig_term_handler(ev_ctx);
+ spoolss_setup_sig_hup_handler(ev_ctx, msg_ctx);
+
+ BlockSignals(false, SIGTERM);
+ BlockSignals(false, SIGHUP);
+
+ /* always start the backgroundqueue listner in spoolssd */
+ bq_logfile = get_bq_logfile();
+ pid = start_background_queue(ev_ctx, msg_ctx, bq_logfile);
+ if (pid > 0) {
+ background_lpq_updater_pid = pid;
+ }
/* the listening fd must be created before the children are actually
* forked out. */
exit(1);
}
- ret = listen(listen_fd, spoolss_max_children);
+ ret = listen(listen_fd, pf_spoolss_cfg.max_allowed_clients);
if (ret == -1) {
DEBUG(0, ("Failed to listen on spoolss pipe - %s\n",
strerror(errno)));
exit(1);
}
-
/* start children before any more initialization is done */
- ok = prefork_create_pool(ev_ctx, ev_ctx, listen_fd,
- spoolss_min_children,
- spoolss_max_children,
+ ok = prefork_create_pool(ev_ctx, /* mem_ctx */
+ ev_ctx, msg_ctx,
+ 1, &listen_fd,
+ pf_spoolss_cfg.min_children,
+ pf_spoolss_cfg.max_children,
&spoolss_children_main, NULL,
- &pool);
-
- spoolss_setup_sig_term_handler(ev_ctx);
- spoolss_setup_sig_hup_handler(ev_ctx, pool, msg_ctx);
+ &spoolss_pool);
+ if (!ok) {
+ exit(1);
+ }
if (!serverid_register(procid_self(),
- FLAG_MSG_GENERAL|FLAG_MSG_SMBD
- |FLAG_MSG_PRINT_GENERAL)) {
+ FLAG_MSG_GENERAL |
+ FLAG_MSG_PRINT_GENERAL)) {
exit(1);
}
exit(1);
}
- messaging_register(msg_ctx, NULL,
- MSG_PRINTER_UPDATE, print_queue_receive);
messaging_register(msg_ctx, ev_ctx,
MSG_SMB_CONF_UPDATED, smb_conf_updated);
+ messaging_register(msg_ctx, NULL, MSG_PRINTER_UPDATE,
+ print_queue_forward);
+ messaging_register(msg_ctx, ev_ctx, MSG_PRINTER_PCAP,
+ pcap_updated);
+ messaging_register(msg_ctx, ev_ctx,
+ MSG_PREFORK_CHILD_EVENT, child_ping);
+
+ /* As soon as messaging is up check if pcap has been loaded already.
+ * If so then we probably missed a message and should load_printers()
+ * ourselves. If pcap has not been loaded yet, then ignore, we will get
+ * a message as soon as the bq process completes the reload. */
+ if (pcap_cache_loaded()) {
+ load_printers(ev_ctx, msg_ctx);
+ }
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
talloc_free(mem_ctx);
- ok = spoolssd_setup_children_monitor(ev_ctx, pool);
+ ok = spoolssd_setup_children_monitor(ev_ctx, msg_ctx);
if (!ok) {
DEBUG(0, ("Failed to setup children monitoring!\n"));
exit(1);
}
- reload_printers(ev_ctx, msg_ctx);
-
DEBUG(1, ("SPOOLSS Daemon Started (%d)\n", getpid()));
+ pfh_manage_pool(ev_ctx, msg_ctx, &pf_spoolss_cfg, spoolss_pool);
+
/* loop forever */
ret = tevent_loop_wait(ev_ctx);
/* should not be reached */
- DEBUG(0,("background_queue: tevent_loop_wait() exited with %d - %s\n",
+ DEBUG(0,("spoolssd tevent_loop_wait() exited with %d - %s\n",
ret, (ret == 0) ? "out of events" : strerror(errno)));
exit(1);
}
git.samba.org / mat / samba.git / blobdiff