diff options
| -rw-r--r-- | source4/param/loadparm.c | 2 | ||||
| -rw-r--r-- | source4/smbd/process_model.h | 3 | ||||
| -rw-r--r-- | source4/smbd/process_model.mk | 10 | ||||
| -rw-r--r-- | source4/smbd/process_prefork.c | 226 | ||||
| -rw-r--r-- | source4/smbd/process_standard.c | 11 | ||||
| -rw-r--r-- | source4/smbd/process_thread.c | 7 |
6 files changed, 250 insertions, 9 deletions
diff --git a/source4/param/loadparm.c b/source4/param/loadparm.c index 2b7b9dd7da..9ec5a59d15 100644 --- a/source4/param/loadparm.c +++ b/source4/param/loadparm.c @@ -2408,6 +2408,8 @@ struct loadparm_context *loadparm_init(TALLOC_CTX *mem_ctx) lp_do_global_parameter_var(lp_ctx, "setup directory", "%s", dyn_SETUPDIR); + lp_do_global_parameter(lp_ctx, "prefork children:smb", "4"); + for (i = 0; parm_table[i].label; i++) { if (!(lp_ctx->flags[i] & FLAG_CMDLINE)) { lp_ctx->flags[i] |= FLAG_DEFAULT; diff --git a/source4/smbd/process_model.h b/source4/smbd/process_model.h index c2a5c9e9e8..796c8ee17b 100644 --- a/source4/smbd/process_model.h +++ b/source4/smbd/process_model.h @@ -25,7 +25,7 @@ #define __PROCESS_MODEL_H__ #include "lib/socket/socket.h" -#include "smbd/service_task.h" +#include "smbd/service.h" /* modules can use the following to determine if the interface has changed * please increment the version number after each interface change @@ -56,6 +56,7 @@ struct model_ops { /* function to create a task */ void (*new_task)(struct event_context *, struct loadparm_context *lp_ctx, + const char *service_name, void (*)(struct event_context *, struct loadparm_context *, struct server_id, void *), diff --git a/source4/smbd/process_model.mk b/source4/smbd/process_model.mk index d6b7698e74..5201a2e46e 100644 --- a/source4/smbd/process_model.mk +++ b/source4/smbd/process_model.mk @@ -32,6 +32,16 @@ PRIVATE_DEPENDENCIES = PTHREAD # End MODULE process_model_thread ################################################ +################################################ +# Start MODULE process_model_prefork +[MODULE::process_model_prefork] +INIT_FUNCTION = process_model_prefork_init +SUBSYSTEM = process_model +OBJ_FILES = \ + process_prefork.o +# End MODULE process_model_thread +################################################ + [SUBSYSTEM::process_model] PRIVATE_PROTO_HEADER = process_model_proto.h OBJ_FILES = \ diff --git a/source4/smbd/process_prefork.c b/source4/smbd/process_prefork.c new file mode 100644 index 0000000000..9f975b4641 --- /dev/null +++ b/source4/smbd/process_prefork.c @@ -0,0 +1,226 @@ +/* + Unix SMB/CIFS implementation. + + process model: prefork (n client connections per process) + + Copyright (C) Andrew Tridgell 1992-2005 + Copyright (C) James J Myers 2003 <myersjj@samba.org> + Copyright (C) Stefan (metze) Metzmacher 2004 + Copyright (C) Andrew Bartlett 2008 <abartlet@samba.org> + Copyright (C) David Disseldorp 2008 <ddiss@sgi.com> + + 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 + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + 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, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "lib/events/events.h" +#include "lib/tdb/include/tdb.h" +#include "lib/socket/socket.h" +#include "smbd/process_model.h" +#include "param/secrets.h" +#include "system/filesys.h" +#include "cluster/cluster.h" +#include "param/param.h" + +#ifdef HAVE_SETPROCTITLE +#ifdef HAVE_SETPROCTITLE_H +#include <setproctitle.h> +#endif +#else +#define setproctitle none_setproctitle +static int none_setproctitle(const char *fmt, ...) PRINTF_ATTRIBUTE(1, 2); +static int none_setproctitle(const char *fmt, ...) +{ + return 0; +} +#endif + +/* + called when the process model is selected +*/ +static void prefork_model_init(struct event_context *ev) +{ + signal(SIGCHLD, SIG_IGN); +} + +/* + called when a listening socket becomes readable. +*/ +static void prefork_accept_connection(struct event_context *ev, + struct loadparm_context *lp_ctx, + struct socket_context *sock, + void (*new_conn)(struct event_context *, + struct loadparm_context *, struct socket_context *, + struct server_id , void *), + void *private) +{ + NTSTATUS status; + struct socket_context *sock2; + pid_t pid = getpid(); + + /* accept an incoming connection. */ + status = socket_accept(sock, &sock2); + if (!NT_STATUS_IS_OK(status)) { + return; + } + + talloc_steal(private, sock); + + new_conn(ev, lp_ctx, sock2, cluster_id(pid, socket_get_fd(sock2)), private); +} + +/* + called to create a new server task +*/ +static void prefork_new_task(struct event_context *ev, + struct loadparm_context *lp_ctx, + const char *service_name, + void (*new_task_fn)(struct event_context *, struct loadparm_context *lp_ctx, struct server_id , void *), + void *private) +{ + pid_t pid; + int i, num_children; + + struct event_context *ev2, *ev_parent; + + pid = fork(); + + if (pid != 0) { + /* parent or error code ... go back to the event loop */ + return; + } + + pid = getpid(); + + /* This is now the child code. We need a completely new event_context to work with */ + ev2 = event_context_init(NULL); + + /* the service has given us a private pointer that + encapsulates the context it needs for this new connection - + everything else will be freed */ + talloc_steal(ev2, private); + + /* this will free all the listening sockets and all state that + is not associated with this new connection */ + talloc_free(ev); + + /* tdb needs special fork handling */ + if (tdb_reopen_all(1) == -1) { + DEBUG(0,("prefork_accept_connection: tdb_reopen_all failed.\n")); + } + + /* Ensure that the forked children do not expose identical random streams */ + set_need_random_reseed(); + + setproctitle("task %s server_id[%d]", service_name, pid); + + /* setup this new connection: process will bind to it's sockets etc */ + new_task_fn(ev2, lp_ctx, cluster_id(pid, 0), private); + + num_children = lp_parm_int(lp_ctx, NULL, "prefork children", service_name, 0); + if (num_children == 0) { + + /* We don't want any kids hanging around for this one, + * let the parent do all the work */ + event_loop_wait(ev2); + + talloc_free(ev2); + exit(0); + } + + /* We are now free to spawn some child proccesses */ + + for (i=0; i < num_children; i++) { + + pid = fork(); + if (pid > 0) { + continue; + } else if (pid == -1) { + return; + } else { + pid = getpid(); + setproctitle("task %s server_id[%d]", service_name, pid); + /* we can't return to the top level here, as that event context is gone, + so we now process events in the new event context until there are no + more to process */ + event_loop_wait(ev2); + + talloc_free(ev2); + exit(0); + } + } + + /* Don't listen on the sockets we just gave to the children */ + talloc_free(ev2); + + /* But we need a events system to handle reaping children */ + ev_parent = event_context_init(NULL); + + /* TODO: Handle some events... */ + + /* we can't return to the top level here, as that event context is gone, + so we now process events in the new event context until there are no + more to process */ + event_loop_wait(ev_parent); + + talloc_free(ev_parent); + exit(0); + +} + + +/* called when a task goes down */ +_NORETURN_ static void prefork_terminate(struct event_context *ev, const char *reason) +{ + DEBUG(2,("prefork_terminate: reason[%s]\n",reason)); + + /* this reload_charcnv() has the effect of freeing the iconv context memory, + which makes leak checking easier */ + reload_charcnv(global_loadparm); + + /* the secrets db should really hang off the connection structure */ + secrets_shutdown(); + + talloc_free(ev); + + /* terminate this process */ + exit(0); +} + +/* called to set a title of a task or connection */ +static void prefork_set_title(struct event_context *ev, const char *title) +{ + if (title) { + setproctitle("%s", title); + } else { + setproctitle(NULL); + } +} + +static const struct model_ops prefork_ops = { + .name = "prefork", + .model_init = prefork_model_init, + .accept_connection = prefork_accept_connection, + .new_task = prefork_new_task, + .terminate = prefork_terminate, + .set_title = prefork_set_title, +}; + +/* + initialise the prefork process model, registering ourselves with the process model subsystem + */ +NTSTATUS process_model_prefork_init(void) +{ + return register_process_model(&prefork_ops); +} diff --git a/source4/smbd/process_standard.c b/source4/smbd/process_standard.c index c088ea3b1a..deb44c0a68 100644 --- a/source4/smbd/process_standard.c +++ b/source4/smbd/process_standard.c @@ -127,8 +127,8 @@ static void standard_accept_connection(struct event_context *ev, talloc_free(c); talloc_free(s); - /* setup this new connection */ - new_conn(ev2, lp_ctx, sock2, cluster_id(pid), private); + /* setup this new connection. Cluster ID is PID based for this process modal */ + new_conn(ev2, lp_ctx, sock2, cluster_id(pid, 0), private); /* we can't return to the top level here, as that event context is gone, so we now process events in the new event context until there are no @@ -144,6 +144,7 @@ static void standard_accept_connection(struct event_context *ev, */ static void standard_new_task(struct event_context *ev, struct loadparm_context *lp_ctx, + const char *service_name, void (*new_task)(struct event_context *, struct loadparm_context *lp_ctx, struct server_id , void *), void *private) { @@ -179,10 +180,10 @@ static void standard_new_task(struct event_context *ev, /* Ensure that the forked children do not expose identical random streams */ set_need_random_reseed(); - setproctitle("task server_id[%d]", pid); + setproctitle("task %s server_id[%d]", service_name, pid); - /* setup this new connection */ - new_task(ev2, lp_ctx, cluster_id(pid), private); + /* setup this new task. Cluster ID is PID based for this process modal */ + new_task(ev2, lp_ctx, cluster_id(pid, 0), private); /* we can't return to the top level here, as that event context is gone, so we now process events in the new event context until there are no diff --git a/source4/smbd/process_thread.c b/source4/smbd/process_thread.c index 6c5f4816c0..5a45cdfeac 100644 --- a/source4/smbd/process_thread.c +++ b/source4/smbd/process_thread.c @@ -148,6 +148,7 @@ static void *thread_task_fn(void *thread_parm) */ static void thread_new_task(struct event_context *ev, struct loadparm_context *lp_ctx, + const char *service_name, void (*new_task)(struct event_context *, struct loadparm_context *, uint32_t , void *), @@ -178,10 +179,10 @@ static void thread_new_task(struct event_context *ev, rc = pthread_create(&thread_id, &thread_attr, thread_task_fn, state); pthread_attr_destroy(&thread_attr); if (rc == 0) { - DEBUG(4,("thread_new_task: created thread_id=%lu\n", - (unsigned long int)thread_id)); + DEBUG(4,("thread_new_task: created %s thread_id=%lu\n", + service_name, (unsigned long int)thread_id)); } else { - DEBUG(0,("thread_new_task: thread create failed rc=%d\n", rc)); + DEBUG(0,("thread_new_task: thread create for %s failed rc=%d\n", service_name, rc)); talloc_free(ev2); } } |