static bool initialize_async_io_handler(void)
{
static bool tried_signal_setup = false;
if (aio_signal_event) {
return true;
}
if (tried_signal_setup) {
return false;
}
tried_signal_setup = true;
aio_signal_event = tevent_add_signal(server_event_context(),
server_event_context(),
RT_SIGNAL_AIO, SA_SIGINFO,
smbd_aio_signal_handler,
NULL);
if (!aio_signal_event) {
DEBUG(10, ("Failed to setup RT_SIGNAL_AIO handler\n"));
return false;
}
/* tevent supports 100 signal with SA_SIGINFO */
aio_pending_size = 100;
return true;
}
static void bq_setup_sig_term_handler(void)
{
struct tevent_signal *se;
se = tevent_add_signal(server_event_context(),
server_event_context(),
SIGTERM, 0,
bq_sig_term_handler,
NULL);
if (!se) {
exit_server("failed to setup SIGTERM handler");
}
}
struct kernel_oplocks *linux_init_kernel_oplocks(TALLOC_CTX *mem_ctx)
{
struct kernel_oplocks *ctx;
struct tevent_signal *se;
if (!linux_oplocks_available()) {
DEBUG(3,("Linux kernel oplocks not available\n"));
return NULL;
}
ctx = talloc_zero(mem_ctx, struct kernel_oplocks);
if (!ctx) {
DEBUG(0,("Linux Kernel oplocks talloc_Zero failed\n"));
return NULL;
}
ctx->ops = &linux_koplocks;
se = tevent_add_signal(server_event_context(),
ctx,
RT_SIGNAL_LEASE, SA_SIGINFO,
linux_oplock_signal_handler,
ctx);
if (!se) {
DEBUG(0,("Failed to setup RT_SIGNAL_LEASE handler"));
TALLOC_FREE(ctx);
return NULL;
}
ctx->private_data = se;
DEBUG(3,("Linux kernel oplocks enabled\n"));
return ctx;
}
static bool init_aio_threadpool(struct vfs_handle_struct *handle)
{
struct fd_event *sock_event = NULL;
int ret = 0;
int num_threads;
if (pool) {
return true;
}
num_threads = aio_get_num_threads(handle);
ret = pthreadpool_init(num_threads, &pool);
if (ret) {
errno = ret;
return false;
}
sock_event = tevent_add_fd(server_event_context(),
NULL,
pthreadpool_signal_fd(pool),
TEVENT_FD_READ,
aio_pthread_handle_completion,
NULL);
if (sock_event == NULL) {
pthreadpool_destroy(pool);
pool = NULL;
return false;
}
DEBUG(10,("init_aio_threadpool: initialized with up to %d threads\n",
num_threads));
return true;
}
uint32_t _fss_IsPathSupported(struct pipes_struct *p,
struct fss_IsPathSupported *r)
{
int snum;
char *service;
char *base_vol;
NTSTATUS status;
struct connection_struct *conn;
char *share;
TALLOC_CTX *tmp_ctx = talloc_new(p->mem_ctx);
if (tmp_ctx == NULL) {
return HRES_ERROR_V(HRES_E_OUTOFMEMORY);
}
if (!fss_permitted(p)) {
talloc_free(tmp_ctx);
return HRES_ERROR_V(HRES_E_ACCESSDENIED);
}
status = fss_unc_parse(tmp_ctx, r->in.ShareName, NULL, &share);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return fss_ntstatus_map(status);
}
snum = find_service(tmp_ctx, share, &service);
if ((snum == -1) || (service == NULL)) {
DEBUG(0, ("share at %s not found\n", r->in.ShareName));
talloc_free(tmp_ctx);
return HRES_ERROR_V(HRES_E_INVALIDARG);
}
status = fss_vfs_conn_create(tmp_ctx, server_event_context(),
p->msg_ctx, p->session_info, snum, &conn);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return HRES_ERROR_V(HRES_E_ACCESSDENIED);
}
if (!become_user_by_session(conn, p->session_info)) {
DEBUG(0, ("failed to become user\n"));
talloc_free(tmp_ctx);
fss_vfs_conn_destroy(conn);
return HRES_ERROR_V(HRES_E_ACCESSDENIED);
}
status = SMB_VFS_SNAP_CHECK_PATH(conn, tmp_ctx,
lp_path(tmp_ctx, snum),
&base_vol);
unbecome_user();
fss_vfs_conn_destroy(conn);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(tmp_ctx);
return FSRVP_E_NOT_SUPPORTED;
}
*r->out.OwnerMachineName = lp_netbios_name();
*r->out.SupportedByThisProvider = 1;
talloc_free(tmp_ctx);
return 0;
}
static bool init_aio_linux(struct vfs_handle_struct *handle)
{
struct tevent_timer *te = NULL;
if (event_fd != -1) {
/* Already initialized. */
return true;
}
/* Schedule a shutdown event for 30 seconds from now. */
te = tevent_add_timer(handle->conn->sconn->ev_ctx,
NULL,
timeval_current_ofs(30, 0),
aio_linux_housekeeping,
NULL);
if (te == NULL) {
goto fail;
}
event_fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
if (event_fd == -1) {
goto fail;
}
aio_read_event = tevent_add_fd(server_event_context(),
NULL,
event_fd,
TEVENT_FD_READ,
aio_linux_done,
NULL);
if (aio_read_event == NULL) {
goto fail;
}
if (io_queue_init(lp_aio_max_threads(), &io_ctx)) {
goto fail;
}
DEBUG(10,("init_aio_linux: initialized with up to %d events\n",
(int)lp_aio_max_threads()));
return true;
fail:
DEBUG(10,("init_aio_linux: initialization failed\n"));
TALLOC_FREE(te);
TALLOC_FREE(aio_read_event);
if (event_fd != -1) {
close(event_fd);
event_fd = -1;
}
memset(&io_ctx, '\0', sizeof(io_ctx));
return false;
}
/* test if system path exists */
static bool snap_path_exists(TALLOC_CTX *ctx, struct messaging_context *msg_ctx,
struct fss_sc *sc)
{
SMB_STRUCT_STAT st;
struct connection_struct *conn = NULL;
struct smb_filename *smb_fname = NULL;
char *service = NULL;
char *share;
int snum;
int ret;
NTSTATUS status;
bool result = false;
ZERO_STRUCT(st);
if ((sc->smaps_count == 0) || (sc->sc_path == NULL)) {
goto out;
}
share = sc->smaps->share_name;
snum = find_service(ctx, share, &service);
if ((snum == -1) || (service == NULL)) {
goto out;
}
status = fss_vfs_conn_create(ctx, server_event_context(),
msg_ctx, NULL, snum, &conn);
if(!NT_STATUS_IS_OK(status)) {
goto out;
}
smb_fname = synthetic_smb_fname(service, sc->sc_path, NULL, NULL);
if (smb_fname == NULL) {
goto out;
}
ret = SMB_VFS_STAT(conn, smb_fname);
if ((ret == -1) && (errno == ENOENT)) {
goto out;
}
result = true;
out:
if (conn) {
fss_vfs_conn_destroy(conn);
}
TALLOC_FREE(service);
return result;
}
static void aio_child_cleanup(struct event_context *event_ctx,
struct timed_event *te,
struct timeval now,
void *private_data)
{
struct aio_child_list *list = talloc_get_type_abort(
private_data, struct aio_child_list);
struct aio_child *child, *next;
TALLOC_FREE(list->cleanup_event);
for (child = list->children; child != NULL; child = next) {
next = child->next;
if (child->aiocb != NULL) {
DEBUG(10, ("child %d currently active\n",
(int)child->pid));
continue;
}
if (child->dont_delete) {
DEBUG(10, ("Child %d was active since last cleanup\n",
(int)child->pid));
child->dont_delete = false;
continue;
}
DEBUG(10, ("Child %d idle for more than 30 seconds, "
"deleting\n", (int)child->pid));
TALLOC_FREE(child);
child = next;
}
if (list->children != NULL) {
/*
* Re-schedule the next cleanup round
*/
list->cleanup_event = event_add_timed(server_event_context(), list,
timeval_add(&now, 30, 0),
aio_child_cleanup, list);
}
}
static void fss_seq_tout_set(TALLOC_CTX *mem_ctx,
uint32_t timeout_s,
struct fss_sc_set *sc_set,
struct tevent_timer **tmr_out)
{
struct tevent_timer *tmr;
struct GUID *sc_set_id = NULL;
uint32_t tout;
/* allow changes to timeout for testing/debugging purposes */
tout = lp_parm_int(GLOBAL_SECTION_SNUM, "fss",
"sequence timeout", timeout_s);
if (tout == 0) {
DEBUG(2, ("FSRVP message sequence timeout disabled\n"));
*tmr_out = NULL;
return;
}
if (sc_set) {
/* don't use talloc_memdup(), need explicit type for callback */
sc_set_id = talloc(mem_ctx, struct GUID);
if (sc_set_id == NULL) {
smb_panic("no memory");
}
memcpy(sc_set_id, &sc_set->id, sizeof(*sc_set_id));
}
tmr = tevent_add_timer(server_event_context(),
mem_ctx,
timeval_current_ofs(tout, 0),
fss_seq_tout_handler, sc_set_id);
if (tmr == NULL) {
talloc_free(sc_set_id);
smb_panic("no memory");
}
*tmr_out = tmr;
}
int main(int argc, const char *argv[])
{
bool is_daemon = false;
bool opt_interactive = false;
bool Fork = true;
bool no_process_group = false;
bool log_stdout = false;
poptContext pc;
char *p_lmhosts = NULL;
int opt;
struct messaging_context *msg;
enum {
OPT_DAEMON = 1000,
OPT_INTERACTIVE,
OPT_FORK,
OPT_NO_PROCESS_GROUP,
OPT_LOG_STDOUT
};
struct poptOption long_options[] = {
POPT_AUTOHELP
{"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon(default)" },
{"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)" },
{"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools & etc)" },
{"no-process-group", 0, POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
{"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
{"hosts", 'H', POPT_ARG_STRING, &p_lmhosts, 0, "Load a netbios hosts file"},
{"port", 'p', POPT_ARG_INT, &global_nmb_port, 0, "Listen on the specified port" },
POPT_COMMON_SAMBA
{ NULL }
};
TALLOC_CTX *frame;
NTSTATUS status;
/*
* Do this before any other talloc operation
*/
talloc_enable_null_tracking();
frame = talloc_stackframe();
setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
load_case_tables();
global_nmb_port = NMB_PORT;
pc = poptGetContext("nmbd", argc, argv, long_options, 0);
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_DAEMON:
is_daemon = true;
break;
case OPT_INTERACTIVE:
opt_interactive = true;
break;
case OPT_FORK:
Fork = false;
break;
case OPT_NO_PROCESS_GROUP:
no_process_group = true;
break;
case OPT_LOG_STDOUT:
log_stdout = true;
break;
default:
d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
poptBadOption(pc, 0), poptStrerror(opt));
poptPrintUsage(pc, stderr, 0);
exit(1);
}
};
poptFreeContext(pc);
global_in_nmbd = true;
StartupTime = time(NULL);
sys_srandom(time(NULL) ^ getpid());
if (!override_logfile) {
char *lfile = NULL;
if (asprintf(&lfile, "%s/log.nmbd", get_dyn_LOGFILEBASE()) < 0) {
exit(1);
}
lp_set_logfile(lfile);
SAFE_FREE(lfile);
}
fault_setup();
dump_core_setup("nmbd", lp_logfile());
/* POSIX demands that signals are inherited. If the invoking process has
* these signals masked, we will have problems, as we won't receive them. */
BlockSignals(False, SIGHUP);
BlockSignals(False, SIGUSR1);
BlockSignals(False, SIGTERM);
#if defined(SIGFPE)
/* we are never interested in SIGFPE */
BlockSignals(True,SIGFPE);
#endif
/* We no longer use USR2... */
#if defined(SIGUSR2)
BlockSignals(True, SIGUSR2);
#endif
if ( opt_interactive ) {
Fork = False;
log_stdout = True;
}
if ( log_stdout && Fork ) {
DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
exit(1);
}
if (log_stdout) {
setup_logging(argv[0], DEBUG_STDOUT);
} else {
setup_logging( argv[0], DEBUG_FILE);
}
reopen_logs();
DEBUG(0,("nmbd version %s started.\n", samba_version_string()));
DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
exit(1);
}
msg = messaging_init(NULL, server_event_context());
if (msg == NULL) {
return 1;
}
if ( !reload_nmbd_services(False) )
return(-1);
if(!init_names())
return -1;
reload_nmbd_services( True );
if (strequal(lp_workgroup(),"*")) {
DEBUG(0,("ERROR: a workgroup name of * is no longer supported\n"));
exit(1);
}
set_samba_nb_type();
if (!is_daemon && !is_a_socket(0)) {
DEBUG(0,("standard input is not a socket, assuming -D option\n"));
is_daemon = True;
}
if (is_daemon && !opt_interactive) {
DEBUG( 2, ( "Becoming a daemon.\n" ) );
become_daemon(Fork, no_process_group, log_stdout);
}
#if HAVE_SETPGID
/*
* If we're interactive we want to set our own process group for
* signal management.
*/
if (opt_interactive && !no_process_group)
setpgid( (pid_t)0, (pid_t)0 );
#endif
#ifndef SYNC_DNS
/* Setup the async dns. We do it here so it doesn't have all the other
stuff initialised and thus chewing memory and sockets */
if(lp_we_are_a_wins_server() && lp_dns_proxy()) {
start_async_dns(msg);
}
#endif
if (!directory_exist(lp_lockdir())) {
mkdir(lp_lockdir(), 0755);
}
if (!directory_exist(lp_piddir())) {
mkdir(lp_piddir(), 0755);
}
pidfile_create("nmbd");
status = reinit_after_fork(msg, nmbd_event_context(),
false);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
exit(1);
}
/*
* Do not initialize the parent-child-pipe before becoming
* a daemon: this is used to detect a died parent in the child
* process.
*/
status = init_before_fork();
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("init_before_fork failed: %s\n", nt_errstr(status)));
exit(1);
}
if (!nmbd_setup_sig_term_handler(msg))
exit(1);
if (!nmbd_setup_stdin_handler(msg, !Fork))
exit(1);
if (!nmbd_setup_sig_hup_handler(msg))
exit(1);
/* get broadcast messages */
if (!serverid_register(messaging_server_id(msg),
FLAG_MSG_GENERAL |
FLAG_MSG_NMBD |
FLAG_MSG_DBWRAP)) {
DEBUG(1, ("Could not register myself in serverid.tdb\n"));
exit(1);
}
messaging_register(msg, NULL, MSG_FORCE_ELECTION,
nmbd_message_election);
#if 0
/* Until winsrepl is done. */
messaging_register(msg, NULL, MSG_WINS_NEW_ENTRY,
nmbd_wins_new_entry);
#endif
messaging_register(msg, NULL, MSG_SHUTDOWN,
nmbd_terminate);
messaging_register(msg, NULL, MSG_SMB_CONF_UPDATED,
msg_reload_nmbd_services);
messaging_register(msg, NULL, MSG_SEND_PACKET,
msg_nmbd_send_packet);
TimeInit();
DEBUG( 3, ( "Opening sockets %d\n", global_nmb_port ) );
if ( !open_sockets( is_daemon, global_nmb_port ) ) {
kill_async_dns_child();
return 1;
}
/* Determine all the IP addresses we have. */
load_interfaces();
/* Create an nmbd subnet record for each of the above. */
if( False == create_subnets() ) {
DEBUG(0,("ERROR: Failed when creating subnet lists. Exiting.\n"));
kill_async_dns_child();
exit(1);
}
/* Load in any static local names. */
if (p_lmhosts) {
set_dyn_LMHOSTSFILE(p_lmhosts);
}
load_lmhosts_file(get_dyn_LMHOSTSFILE());
DEBUG(3,("Loaded hosts file %s\n", get_dyn_LMHOSTSFILE()));
/* If we are acting as a WINS server, initialise data structures. */
if( !initialise_wins() ) {
DEBUG( 0, ( "nmbd: Failed when initialising WINS server.\n" ) );
kill_async_dns_child();
exit(1);
}
/*
* Register nmbd primary workgroup and nmbd names on all
* the broadcast subnets, and on the WINS server (if specified).
* Also initiate the startup of our primary workgroup (start
* elections if we are setup as being able to be a local
* master browser.
*/
if( False == register_my_workgroup_and_names() ) {
DEBUG(0,("ERROR: Failed when creating my my workgroup. Exiting.\n"));
kill_async_dns_child();
exit(1);
}
if (!initialize_nmbd_proxy_logon()) {
DEBUG(0,("ERROR: Failed setup nmbd_proxy_logon.\n"));
kill_async_dns_child();
exit(1);
}
if (!nmbd_init_packet_server()) {
kill_async_dns_child();
exit(1);
}
TALLOC_FREE(frame);
process(msg);
kill_async_dns_child();
return(0);
}
uint32_t _fss_CommitShadowCopySet(struct pipes_struct *p,
struct fss_CommitShadowCopySet *r)
{
struct fss_sc_set *sc_set;
struct fss_sc *sc;
uint32_t commit_count;
NTSTATUS status;
NTSTATUS saved_status;
TALLOC_CTX *tmp_ctx;
if (!fss_permitted(p)) {
status = NT_STATUS_ACCESS_DENIED;
goto err_out;
}
tmp_ctx = talloc_new(p->mem_ctx);
if (tmp_ctx == NULL) {
status = NT_STATUS_NO_MEMORY;
goto err_out;
}
sc_set = sc_set_lookup(fss_global.sc_sets, &r->in.ShadowCopySetId);
if (sc_set == NULL) {
status = NT_STATUS_INVALID_PARAMETER;
goto err_tmp_free;
}
if (sc_set->state != FSS_SC_ADDED) {
status = NT_STATUS_INVALID_SERVER_STATE;
goto err_tmp_free;
}
/* stop Message Sequence Timer */
TALLOC_FREE(fss_global.seq_tmr);
sc_set->state = FSS_SC_CREATING;
commit_count = 0;
saved_status = NT_STATUS_OK;
for (sc = sc_set->scs; sc; sc = sc->next) {
char *base_path;
char *snap_path;
status = commit_sc_with_conn(tmp_ctx, server_event_context(),
p->msg_ctx, p->session_info, sc,
&base_path, &snap_path);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("snap create failed for shadow copy of "
"%s\n", sc->volume_name));
/* dispatch all scs in set, but retain last error */
saved_status = status;
continue;
}
/* XXX set timeout r->in.TimeOutInMilliseconds */
commit_count++;
DEBUG(10, ("good snap create %d\n",
commit_count));
sc->sc_path = talloc_steal(sc, snap_path);
}
if (!NT_STATUS_IS_OK(saved_status)) {
status = saved_status;
goto err_state_revert;
}
sc_set->state = FSS_SC_COMMITED;
become_root();
status = fss_state_store(fss_global.mem_ctx, fss_global.sc_sets,
fss_global.sc_sets_count,
fss_global.db_path);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("failed to store fss server state: %s\n",
nt_errstr(status)));
}
fss_seq_tout_set(fss_global.mem_ctx, 180, sc_set,
&fss_global.seq_tmr);
talloc_free(tmp_ctx);
return 0;
err_state_revert:
sc_set->state = FSS_SC_ADDED;
fss_seq_tout_set(fss_global.mem_ctx, 180, sc_set,
&fss_global.seq_tmr);
err_tmp_free:
talloc_free(tmp_ctx);
err_out:
return fss_ntstatus_map(status);
}
uint32_t _fss_AddToShadowCopySet(struct pipes_struct *p,
struct fss_AddToShadowCopySet *r)
{
uint32_t ret;
struct fss_sc_set *sc_set;
struct fss_sc *sc;
struct fss_sc_smap *sc_smap;
int snum;
char *service;
char *base_vol;
char *share;
char *path_name;
struct connection_struct *conn;
NTSTATUS status;
TALLOC_CTX *tmp_ctx = talloc_new(p->mem_ctx);
if (tmp_ctx == NULL) {
ret = HRES_ERROR_V(HRES_E_OUTOFMEMORY);
goto err_out;
}
if (!fss_permitted(p)) {
ret = HRES_ERROR_V(HRES_E_ACCESSDENIED);
goto err_tmp_free;
}
sc_set = sc_set_lookup(fss_global.sc_sets, &r->in.ShadowCopySetId);
if (sc_set == NULL) {
ret = HRES_ERROR_V(HRES_E_INVALIDARG);
goto err_tmp_free;
}
status = fss_unc_parse(tmp_ctx, r->in.ShareName, NULL, &share);
if (!NT_STATUS_IS_OK(status)) {
ret = fss_ntstatus_map(status);
goto err_tmp_free;
}
snum = find_service(tmp_ctx, share, &service);
if ((snum == -1) || (service == NULL)) {
DEBUG(0, ("share at %s not found\n", r->in.ShareName));
ret = HRES_ERROR_V(HRES_E_INVALIDARG);
goto err_tmp_free;
}
path_name = lp_path(tmp_ctx, snum);
if (path_name == NULL) {
ret = HRES_ERROR_V(HRES_E_OUTOFMEMORY);
goto err_tmp_free;
}
status = fss_vfs_conn_create(tmp_ctx, server_event_context(),
p->msg_ctx, p->session_info, snum, &conn);
if (!NT_STATUS_IS_OK(status)) {
ret = HRES_ERROR_V(HRES_E_ACCESSDENIED);
goto err_tmp_free;
}
if (!become_user_by_session(conn, p->session_info)) {
DEBUG(0, ("failed to become user\n"));
fss_vfs_conn_destroy(conn);
ret = HRES_ERROR_V(HRES_E_ACCESSDENIED);
goto err_tmp_free;
}
status = SMB_VFS_SNAP_CHECK_PATH(conn, tmp_ctx, path_name, &base_vol);
unbecome_user();
fss_vfs_conn_destroy(conn);
if (!NT_STATUS_IS_OK(status)) {
ret = FSRVP_E_NOT_SUPPORTED;
goto err_tmp_free;
}
if ((sc_set->state != FSS_SC_STARTED)
&& (sc_set->state != FSS_SC_ADDED)) {
ret = FSRVP_E_BAD_STATE;
goto err_tmp_free;
}
/* stop msg seq timer */
TALLOC_FREE(fss_global.seq_tmr);
/*
* server MUST look up the ShadowCopy in ShadowCopySet.ShadowCopyList
* where ShadowCopy.VolumeName matches the file store on which the
* share identified by ShareName is hosted. If an entry is found, the
* server MUST fail the call with FSRVP_E_OBJECT_ALREADY_EXISTS.
* If no entry is found, the server MUST create a new ShadowCopy
* object
* XXX Windows appears to allow multiple mappings for the same vol!
*/
sc = sc_lookup_volname(sc_set->scs, base_vol);
if (sc != NULL) {
ret = FSRVP_E_OBJECT_ALREADY_EXISTS;
goto err_tmr_restart;
}
sc = talloc_zero(sc_set, struct fss_sc);
if (sc == NULL) {
ret = HRES_ERROR_V(HRES_E_OUTOFMEMORY);
goto err_tmr_restart;
}
talloc_steal(sc, base_vol);
sc->volume_name = base_vol;
sc->sc_set = sc_set;
sc->create_ts = time(NULL);
sc->id = GUID_random(); /* Windows servers ignore client ids */
sc->id_str = GUID_string(sc, &sc->id);
if (sc->id_str == NULL) {
ret = HRES_ERROR_V(HRES_E_OUTOFMEMORY);
goto err_sc_free;
}
sc_smap = talloc_zero(sc, struct fss_sc_smap);
if (sc_smap == NULL) {
ret = HRES_ERROR_V(HRES_E_OUTOFMEMORY);
goto err_sc_free;
}
talloc_steal(sc_smap, service);
sc_smap->share_name = service;
sc_smap->is_exposed = false;
/*
* generate the sc_smap share name now. It is a unique identifier for
* the smap used as a tdb key for state storage.
*/
ret = map_share_name(sc_smap, sc);
if (ret) {
goto err_sc_free;
}
/* add share map to shadow-copy */
DLIST_ADD_END(sc->smaps, sc_smap, struct fss_sc_smap *);
sc->smaps_count++;
/* add shadow-copy to shadow-copy set */
DLIST_ADD_END(sc_set->scs, sc, struct fss_sc *);
sc_set->scs_count++;
DEBUG(4, ("added volume %s to shadow copy set with GUID %s\n",
sc->volume_name, sc_set->id_str));
/* start the Message Sequence Timer with timeout of 1800 seconds */
fss_seq_tout_set(fss_global.mem_ctx, 1800, sc_set, &fss_global.seq_tmr);
sc_set->state = FSS_SC_ADDED;
r->out.pShadowCopyId = &sc->id;
talloc_free(tmp_ctx);
return 0;
err_sc_free:
talloc_free(sc);
err_tmr_restart:
fss_seq_tout_set(fss_global.mem_ctx, 180, sc_set, &fss_global.seq_tmr);
err_tmp_free:
talloc_free(tmp_ctx);
err_out:
return ret;
}
static bool recalc_brl_timeout(struct smbd_server_connection *sconn)
{
struct blocking_lock_record *blr;
struct timeval next_timeout;
int max_brl_timeout = lp_parm_int(-1, "brl", "recalctime", 5);
TALLOC_FREE(sconn->smb1.locks.brl_timeout);
next_timeout = timeval_zero();
for (blr = sconn->smb1.locks.blocking_lock_queue; blr; blr = blr->next) {
if (timeval_is_zero(&blr->expire_time)) {
/*
* If we're blocked on pid 0xFFFFFFFFFFFFFFFFLL this is
* a POSIX lock, so calculate a timeout of
* 10 seconds into the future.
*/
if (blr->blocking_smblctx == 0xFFFFFFFFFFFFFFFFLL) {
struct timeval psx_to = timeval_current_ofs(10, 0);
next_timeout = timeval_brl_min(&next_timeout, &psx_to);
}
continue;
}
next_timeout = timeval_brl_min(&next_timeout, &blr->expire_time);
}
if (timeval_is_zero(&next_timeout)) {
DEBUG(10, ("Next timeout = Infinite.\n"));
return True;
}
/*
to account for unclean shutdowns by clients we need a
maximum timeout that we use for checking pending locks. If
we have any pending locks at all, then check if the pending
lock can continue at least every brl:recalctime seconds
(default 5 seconds).
This saves us needing to do a message_send_all() in the
SIGCHLD handler in the parent daemon. That
message_send_all() caused O(n^2) work to be done when IP
failovers happened in clustered Samba, which could make the
entire system unusable for many minutes.
*/
if (max_brl_timeout > 0) {
struct timeval min_to = timeval_current_ofs(max_brl_timeout, 0);
next_timeout = timeval_min(&next_timeout, &min_to);
}
if (DEBUGLVL(10)) {
struct timeval cur, from_now;
cur = timeval_current();
from_now = timeval_until(&cur, &next_timeout);
DEBUG(10, ("Next timeout = %d.%d seconds from now.\n",
(int)from_now.tv_sec, (int)from_now.tv_usec));
}
sconn->smb1.locks.brl_timeout = event_add_timed(server_event_context(),
NULL, next_timeout,
brl_timeout_fn, sconn);
if (sconn->smb1.locks.brl_timeout == NULL) {
return False;
}
return True;
}
static NTSTATUS close_remove_share_mode(files_struct *fsp,
enum file_close_type close_type)
{
connection_struct *conn = fsp->conn;
bool delete_file = false;
bool changed_user = false;
struct share_mode_lock *lck = NULL;
NTSTATUS status = NT_STATUS_OK;
NTSTATUS tmp_status;
struct file_id id;
const struct security_unix_token *del_token = NULL;
/* Ensure any pending write time updates are done. */
if (fsp->update_write_time_event) {
update_write_time_handler(server_event_context(),
fsp->update_write_time_event,
timeval_current(),
(void *)fsp);
}
/*
* Lock the share entries, and determine if we should delete
* on close. If so delete whilst the lock is still in effect.
* This prevents race conditions with the file being created. JRA.
*/
lck = get_share_mode_lock(talloc_tos(), fsp->file_id, NULL, NULL,
NULL);
if (lck == NULL) {
DEBUG(0, ("close_remove_share_mode: Could not get share mode "
"lock for file %s\n", fsp_str_dbg(fsp)));
status = NT_STATUS_INVALID_PARAMETER;
goto done;
}
if (fsp->write_time_forced) {
DEBUG(10,("close_remove_share_mode: write time forced "
"for file %s\n",
fsp_str_dbg(fsp)));
set_close_write_time(fsp, lck->changed_write_time);
} else if (fsp->update_write_time_on_close) {
/* Someone had a pending write. */
if (null_timespec(fsp->close_write_time)) {
DEBUG(10,("close_remove_share_mode: update to current time "
"for file %s\n",
fsp_str_dbg(fsp)));
/* Update to current time due to "normal" write. */
set_close_write_time(fsp, timespec_current());
} else {
DEBUG(10,("close_remove_share_mode: write time pending "
"for file %s\n",
fsp_str_dbg(fsp)));
/* Update to time set on close call. */
set_close_write_time(fsp, fsp->close_write_time);
}
}
if (!del_share_mode(lck, fsp)) {
DEBUG(0, ("close_remove_share_mode: Could not delete share "
"entry for file %s\n",
fsp_str_dbg(fsp)));
}
if (fsp->initial_delete_on_close &&
!is_delete_on_close_set(lck, fsp->name_hash)) {
bool became_user = False;
/* Initial delete on close was set and no one else
* wrote a real delete on close. */
if (get_current_vuid(conn) != fsp->vuid) {
become_user(conn, fsp->vuid);
became_user = True;
}
fsp->delete_on_close = true;
set_delete_on_close_lck(fsp, lck, True, get_current_utok(conn));
if (became_user) {
unbecome_user();
}
}
delete_file = is_delete_on_close_set(lck, fsp->name_hash);
if (delete_file) {
int i;
/* See if others still have the file open via this pathname.
If this is the case, then don't delete. If all opens are
POSIX delete now. */
for (i=0; i<lck->num_share_modes; i++) {
struct share_mode_entry *e = &lck->share_modes[i];
if (is_valid_share_mode_entry(e) &&
e->name_hash == fsp->name_hash) {
if (fsp->posix_open && (e->flags & SHARE_MODE_FLAG_POSIX_OPEN)) {
continue;
}
delete_file = False;
break;
}
}
}
/* Notify any deferred opens waiting on this close. */
notify_deferred_opens(conn->sconn->msg_ctx, lck);
reply_to_oplock_break_requests(fsp);
/*
* NT can set delete_on_close of the last open
* reference to a file.
*/
if (!(close_type == NORMAL_CLOSE || close_type == SHUTDOWN_CLOSE) ||
!delete_file) {
TALLOC_FREE(lck);
return NT_STATUS_OK;
}
/*
* Ok, we have to delete the file
*/
DEBUG(5,("close_remove_share_mode: file %s. Delete on close was set "
"- deleting file.\n", fsp_str_dbg(fsp)));
/*
* Don't try to update the write time when we delete the file
*/
fsp->update_write_time_on_close = false;
del_token = get_delete_on_close_token(lck, fsp->name_hash);
SMB_ASSERT(del_token != NULL);
if (!unix_token_equal(del_token, get_current_utok(conn))) {
/* Become the user who requested the delete. */
DEBUG(5,("close_remove_share_mode: file %s. "
"Change user to uid %u\n",
fsp_str_dbg(fsp),
(unsigned int)del_token->uid));
if (!push_sec_ctx()) {
smb_panic("close_remove_share_mode: file %s. failed to push "
"sec_ctx.\n");
}
set_sec_ctx(del_token->uid,
del_token->gid,
del_token->ngroups,
del_token->groups,
NULL);
changed_user = true;
}
/* We can only delete the file if the name we have is still valid and
hasn't been renamed. */
tmp_status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(tmp_status)) {
DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
"was set and stat failed with error %s\n",
fsp_str_dbg(fsp), nt_errstr(tmp_status)));
/*
* Don't save the errno here, we ignore this error
*/
goto done;
}
id = vfs_file_id_from_sbuf(conn, &fsp->fsp_name->st);
if (!file_id_equal(&fsp->file_id, &id)) {
DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
"was set and dev and/or inode does not match\n",
fsp_str_dbg(fsp)));
DEBUG(5,("close_remove_share_mode: file %s. stored file_id %s, "
"stat file_id %s\n",
fsp_str_dbg(fsp),
file_id_string_tos(&fsp->file_id),
file_id_string_tos(&id)));
/*
* Don't save the errno here, we ignore this error
*/
goto done;
}
if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
&& !is_ntfs_stream_smb_fname(fsp->fsp_name)) {
status = delete_all_streams(conn, fsp->fsp_name->base_name);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(5, ("delete_all_streams failed: %s\n",
nt_errstr(status)));
goto done;
}
}
if (SMB_VFS_UNLINK(conn, fsp->fsp_name) != 0) {
/*
* This call can potentially fail as another smbd may
* have had the file open with delete on close set and
* deleted it when its last reference to this file
* went away. Hence we log this but not at debug level
* zero.
*/
DEBUG(5,("close_remove_share_mode: file %s. Delete on close "
"was set and unlink failed with error %s\n",
fsp_str_dbg(fsp), strerror(errno)));
status = map_nt_error_from_unix(errno);
}
/* As we now have POSIX opens which can unlink
* with other open files we may have taken
* this code path with more than one share mode
* entry - ensure we only delete once by resetting
* the delete on close flag. JRA.
*/
fsp->delete_on_close = false;
set_delete_on_close_lck(fsp, lck, false, NULL);
done:
if (changed_user) {
/* unbecome user. */
pop_sec_ctx();
}
TALLOC_FREE(lck);
if (delete_file) {
/*
* Do the notification after we released the share
* mode lock. Inside notify_fname we take out another
* tdb lock. With ctdb also accessing our databases,
* this can lead to deadlocks. Putting this notify
* after the TALLOC_FREE(lck) above we avoid locking
* two records simultaneously. Notifies are async and
* informational only, so calling the notify_fname
* without holding the share mode lock should not do
* any harm.
*/
notify_fname(conn, NOTIFY_ACTION_REMOVED,
FILE_NOTIFY_CHANGE_FILE_NAME,
fsp->fsp_name->base_name);
}
return status;
}
bool run_dbwrap_do_locked1(int dummy)
{
struct tevent_context *ev;
struct messaging_context *msg;
struct db_context *backend;
struct db_context *db;
const char *dbname = "test_do_locked.tdb";
const char *keystr = "key";
TDB_DATA key = string_term_tdb_data(keystr);
const char *valuestr = "value";
TDB_DATA value = string_term_tdb_data(valuestr);
struct do_locked1_state state = { .value = value };
int ret = false;
NTSTATUS status;
ev = server_event_context();
if (ev == NULL) {
fprintf(stderr, "server_event_context() failed\n");
return false;
}
msg = server_messaging_context();
if (msg == NULL) {
fprintf(stderr, "server_messaging_context() failed\n");
return false;
}
backend = db_open(talloc_tos(), dbname, 0,
TDB_CLEAR_IF_FIRST, O_CREAT|O_RDWR, 0644,
DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
if (backend == NULL) {
fprintf(stderr, "db_open failed: %s\n", strerror(errno));
return false;
}
db = db_open_watched(talloc_tos(), backend, msg);
if (db == NULL) {
fprintf(stderr, "db_open_watched failed: %s\n",
strerror(errno));
return false;
}
status = dbwrap_do_locked(db, key, do_locked1_cb, &state);
if (!NT_STATUS_IS_OK(status)) {
fprintf(stderr, "dbwrap_do_locked failed: %s\n",
nt_errstr(status));
goto fail;
}
if (!NT_STATUS_IS_OK(state.status)) {
fprintf(stderr, "store returned %s\n",
nt_errstr(state.status));
goto fail;
}
status = dbwrap_parse_record(db, key, do_locked1_check, &state);
if (!NT_STATUS_IS_OK(status)) {
fprintf(stderr, "dbwrap_parse_record failed: %s\n",
nt_errstr(status));
goto fail;
}
if (!NT_STATUS_IS_OK(state.status)) {
fprintf(stderr, "data compare returned %s\n",
nt_errstr(status));
goto fail;
}
status = dbwrap_do_locked(db, key, do_locked1_del, &state);
if (!NT_STATUS_IS_OK(status)) {
fprintf(stderr, "dbwrap_do_locked failed: %s\n",
nt_errstr(status));
goto fail;
}
if (!NT_STATUS_IS_OK(state.status)) {
fprintf(stderr, "delete returned %s\n", nt_errstr(status));
goto fail;
}
status = dbwrap_parse_record(db, key, do_locked1_check, &state);
if (!NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
fprintf(stderr, "parse_record returned %s, "
"expected NOT_FOUND\n", nt_errstr(status));
goto fail;
}
ret = true;
fail:
TALLOC_FREE(db);
unlink(dbname);
return ret;
}
struct event_context *nmbd_event_context(void)
{
return server_event_context();
}
int main(int argc,const char *argv[])
{
/* shall I run as a daemon */
bool is_daemon = false;
bool interactive = false;
bool Fork = true;
bool no_process_group = false;
bool log_stdout = false;
char *ports = NULL;
char *profile_level = NULL;
int opt;
poptContext pc;
bool print_build_options = False;
enum {
OPT_DAEMON = 1000,
OPT_INTERACTIVE,
OPT_FORK,
OPT_NO_PROCESS_GROUP,
OPT_LOG_STDOUT
};
struct poptOption long_options[] = {
POPT_AUTOHELP
{"daemon", 'D', POPT_ARG_NONE, NULL, OPT_DAEMON, "Become a daemon (default)" },
{"interactive", 'i', POPT_ARG_NONE, NULL, OPT_INTERACTIVE, "Run interactive (not a daemon)"},
{"foreground", 'F', POPT_ARG_NONE, NULL, OPT_FORK, "Run daemon in foreground (for daemontools, etc.)" },
{"no-process-group", '\0', POPT_ARG_NONE, NULL, OPT_NO_PROCESS_GROUP, "Don't create a new process group" },
{"log-stdout", 'S', POPT_ARG_NONE, NULL, OPT_LOG_STDOUT, "Log to stdout" },
{"build-options", 'b', POPT_ARG_NONE, NULL, 'b', "Print build options" },
{"port", 'p', POPT_ARG_STRING, &ports, 0, "Listen on the specified ports"},
{"profiling-level", 'P', POPT_ARG_STRING, &profile_level, 0, "Set profiling level","PROFILE_LEVEL"},
POPT_COMMON_SAMBA
POPT_COMMON_DYNCONFIG
POPT_TABLEEND
};
struct smbd_parent_context *parent = NULL;
TALLOC_CTX *frame;
NTSTATUS status;
uint64_t unique_id;
struct tevent_context *ev_ctx;
struct messaging_context *msg_ctx;
/*
* Do this before any other talloc operation
*/
talloc_enable_null_tracking();
frame = talloc_stackframe();
setup_logging(argv[0], DEBUG_DEFAULT_STDOUT);
load_case_tables();
smbd_init_globals();
TimeInit();
#ifdef HAVE_SET_AUTH_PARAMETERS
set_auth_parameters(argc,argv);
#endif
pc = poptGetContext("smbd", argc, argv, long_options, 0);
while((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_DAEMON:
is_daemon = true;
break;
case OPT_INTERACTIVE:
interactive = true;
break;
case OPT_FORK:
Fork = false;
break;
case OPT_NO_PROCESS_GROUP:
no_process_group = true;
break;
case OPT_LOG_STDOUT:
log_stdout = true;
break;
case 'b':
print_build_options = True;
break;
default:
d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
poptBadOption(pc, 0), poptStrerror(opt));
poptPrintUsage(pc, stderr, 0);
exit(1);
}
}
poptFreeContext(pc);
if (interactive) {
Fork = False;
log_stdout = True;
}
if (log_stdout) {
setup_logging(argv[0], DEBUG_STDOUT);
} else {
setup_logging(argv[0], DEBUG_FILE);
}
if (print_build_options) {
build_options(True); /* Display output to screen as well as debug */
exit(0);
}
#ifdef HAVE_SETLUID
/* needed for SecureWare on SCO */
setluid(0);
#endif
set_remote_machine_name("smbd", False);
if (interactive && (DEBUGLEVEL >= 9)) {
talloc_enable_leak_report();
}
if (log_stdout && Fork) {
DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
exit(1);
}
/* we want to re-seed early to prevent time delays causing
client problems at a later date. (tridge) */
generate_random_buffer(NULL, 0);
/* get initial effective uid and gid */
sec_init();
/* make absolutely sure we run as root - to handle cases where people
are crazy enough to have it setuid */
gain_root_privilege();
gain_root_group_privilege();
fault_setup();
dump_core_setup("smbd", lp_logfile());
/* we are never interested in SIGPIPE */
BlockSignals(True,SIGPIPE);
#if defined(SIGFPE)
/* we are never interested in SIGFPE */
BlockSignals(True,SIGFPE);
#endif
#if defined(SIGUSR2)
/* We are no longer interested in USR2 */
BlockSignals(True,SIGUSR2);
#endif
/* POSIX demands that signals are inherited. If the invoking process has
* these signals masked, we will have problems, as we won't recieve them. */
BlockSignals(False, SIGHUP);
BlockSignals(False, SIGUSR1);
BlockSignals(False, SIGTERM);
/* Ensure we leave no zombies until we
* correctly set up child handling below. */
CatchChild();
/* we want total control over the permissions on created files,
so set our umask to 0 */
umask(0);
reopen_logs();
DEBUG(0,("smbd version %s started.\n", samba_version_string()));
DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
DEBUG(2,("uid=%d gid=%d euid=%d egid=%d\n",
(int)getuid(),(int)getgid(),(int)geteuid(),(int)getegid()));
/* Output the build options to the debug log */
build_options(False);
if (sizeof(uint16) < 2 || sizeof(uint32) < 4) {
DEBUG(0,("ERROR: Samba is not configured correctly for the word size on your machine\n"));
exit(1);
}
if (!lp_load_initial_only(get_dyn_CONFIGFILE())) {
DEBUG(0, ("error opening config file '%s'\n", get_dyn_CONFIGFILE()));
exit(1);
}
/* Init the security context and global current_user */
init_sec_ctx();
/*
* Initialize the event context. The event context needs to be
* initialized before the messaging context, cause the messaging
* context holds an event context.
* FIXME: This should be s3_tevent_context_init()
*/
ev_ctx = server_event_context();
if (ev_ctx == NULL) {
exit(1);
}
/*
* Init the messaging context
* FIXME: This should only call messaging_init()
*/
msg_ctx = server_messaging_context();
if (msg_ctx == NULL) {
exit(1);
}
/*
* Reloading of the printers will not work here as we don't have a
* server info and rpc services set up. It will be called later.
*/
if (!reload_services(NULL, -1, False)) {
exit(1);
}
/* ...NOTE... Log files are working from this point! */
DEBUG(3,("loaded services\n"));
init_structs();
#ifdef WITH_PROFILE
if (!profile_setup(msg_ctx, False)) {
DEBUG(0,("ERROR: failed to setup profiling\n"));
return -1;
}
if (profile_level != NULL) {
int pl = atoi(profile_level);
struct server_id src;
DEBUG(1, ("setting profiling level: %s\n",profile_level));
src.pid = getpid();
set_profile_level(pl, src);
}
#endif
if (!is_daemon && !is_a_socket(0)) {
if (!interactive)
DEBUG(0,("standard input is not a socket, assuming -D option\n"));
/*
* Setting is_daemon here prevents us from eventually calling
* the open_sockets_inetd()
*/
is_daemon = True;
}
if (is_daemon && !interactive) {
DEBUG( 3, ( "Becoming a daemon.\n" ) );
become_daemon(Fork, no_process_group, log_stdout);
}
generate_random_buffer((uint8_t *)&unique_id, sizeof(unique_id));
set_my_unique_id(unique_id);
#if HAVE_SETPGID
/*
* If we're interactive we want to set our own process group for
* signal management.
*/
if (interactive && !no_process_group)
setpgid( (pid_t)0, (pid_t)0);
#endif
if (!directory_exist(lp_lockdir()))
mkdir(lp_lockdir(), 0755);
if (is_daemon)
pidfile_create("smbd");
status = reinit_after_fork(msg_ctx,
ev_ctx,
procid_self(), false);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
exit(1);
}
smbd_server_conn->msg_ctx = msg_ctx;
smbd_setup_sig_term_handler();
smbd_setup_sig_hup_handler(ev_ctx,
msg_ctx);
/* Setup all the TDB's - including CLEAR_IF_FIRST tdb's. */
if (smbd_memcache() == NULL) {
exit(1);
}
memcache_set_global(smbd_memcache());
/* Initialise the password backed before the global_sam_sid
to ensure that we fetch from ldap before we make a domain sid up */
if(!initialize_password_db(false, ev_ctx))
exit(1);
if (!secrets_init()) {
DEBUG(0, ("ERROR: smbd can not open secrets.tdb\n"));
exit(1);
}
if (lp_server_role() == ROLE_DOMAIN_BDC || lp_server_role() == ROLE_DOMAIN_PDC) {
struct loadparm_context *lp_ctx = loadparm_init_s3(NULL, loadparm_s3_context());
if (!open_schannel_session_store(NULL, lp_ctx)) {
DEBUG(0,("ERROR: Samba cannot open schannel store for secured NETLOGON operations.\n"));
exit(1);
}
TALLOC_FREE(lp_ctx);
}
if(!get_global_sam_sid()) {
DEBUG(0,("ERROR: Samba cannot create a SAM SID.\n"));
exit(1);
}
if (!sessionid_init()) {
exit(1);
}
if (!connections_init(True))
exit(1);
if (!locking_init())
exit(1);
if (!messaging_tdb_parent_init(ev_ctx)) {
exit(1);
}
if (!notify_internal_parent_init(ev_ctx)) {
exit(1);
}
if (!serverid_parent_init(ev_ctx)) {
exit(1);
}
if (!W_ERROR_IS_OK(registry_init_full()))
exit(1);
/* Open the share_info.tdb here, so we don't have to open
after the fork on every single connection. This is a small
performance improvment and reduces the total number of system
fds used. */
if (!share_info_db_init()) {
DEBUG(0,("ERROR: failed to load share info db.\n"));
exit(1);
}
status = init_system_info();
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("ERROR: failed to setup system user info: %s.\n",
nt_errstr(status)));
return -1;
}
if (!init_guest_info()) {
DEBUG(0,("ERROR: failed to setup guest info.\n"));
return -1;
}
if (!file_init(smbd_server_conn)) {
DEBUG(0, ("ERROR: file_init failed\n"));
return -1;
}
/* This MUST be done before start_epmd() because otherwise
* start_epmd() forks and races against dcesrv_ep_setup() to
* call directory_create_or_exist() */
if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
DEBUG(0, ("Failed to create pipe directory %s - %s\n",
lp_ncalrpc_dir(), strerror(errno)));
return -1;
}
if (is_daemon && !interactive) {
if (rpc_epmapper_daemon() == RPC_DAEMON_FORK) {
start_epmd(ev_ctx, msg_ctx);
}
}
if (!dcesrv_ep_setup(ev_ctx, msg_ctx)) {
exit(1);
}
/* only start other daemons if we are running as a daemon
* -- bad things will happen if smbd is launched via inetd
* and we fork a copy of ourselves here */
if (is_daemon && !interactive) {
if (rpc_lsasd_daemon() == RPC_DAEMON_FORK) {
start_lsasd(ev_ctx, msg_ctx);
}
if (!_lp_disable_spoolss() &&
(rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
bool bgq = lp_parm_bool(-1, "smbd", "backgroundqueue", true);
if (!printing_subsystem_init(ev_ctx, msg_ctx, true, bgq)) {
exit(1);
}
}
} else if (!_lp_disable_spoolss() &&
(rpc_spoolss_daemon() != RPC_DAEMON_DISABLED)) {
if (!printing_subsystem_init(ev_ctx, msg_ctx, false, false)) {
exit(1);
}
}
if (!is_daemon) {
/* inetd mode */
TALLOC_FREE(frame);
/* Started from inetd. fd 0 is the socket. */
/* We will abort gracefully when the client or remote system
goes away */
smbd_server_conn->sock = dup(0);
/* close our standard file descriptors */
if (!debug_get_output_is_stdout()) {
close_low_fds(False); /* Don't close stderr */
}
#ifdef HAVE_ATEXIT
atexit(killkids);
#endif
/* Stop zombies */
smbd_setup_sig_chld_handler(ev_ctx);
smbd_process(ev_ctx, smbd_server_conn);
exit_server_cleanly(NULL);
return(0);
}
parent = talloc_zero(ev_ctx, struct smbd_parent_context);
if (!parent) {
exit_server("talloc(struct smbd_parent_context) failed");
}
parent->interactive = interactive;
if (!open_sockets_smbd(parent, ev_ctx, msg_ctx, ports))
exit_server("open_sockets_smbd() failed");
/* do a printer update now that all messaging has been set up,
* before we allow clients to start connecting */
printing_subsystem_update(ev_ctx, msg_ctx, false);
TALLOC_FREE(frame);
/* make sure we always have a valid stackframe */
frame = talloc_stackframe();
smbd_parent_loop(ev_ctx, parent);
exit_server_cleanly(NULL);
TALLOC_FREE(frame);
return(0);
}
uint32_t _fss_DeleteShareMapping(struct pipes_struct *p,
struct fss_DeleteShareMapping *r)
{
struct fss_sc_set *sc_set;
struct fss_sc *sc;
struct fss_sc_smap *sc_smap;
char *share;
NTSTATUS status;
TALLOC_CTX *tmp_ctx;
struct connection_struct *conn;
int snum;
char *service;
if (!fss_permitted(p)) {
status = NT_STATUS_ACCESS_DENIED;
goto err_out;
}
tmp_ctx = talloc_new(p->mem_ctx);
if (tmp_ctx == NULL) {
status = NT_STATUS_NO_MEMORY;
goto err_out;
}
sc_set = sc_set_lookup(fss_global.sc_sets, &r->in.ShadowCopySetId);
if (sc_set == NULL) {
/* docs say HRES_E_INVALIDARG */
status = NT_STATUS_OBJECTID_NOT_FOUND;
goto err_tmp_free;
}
if ((sc_set->state != FSS_SC_EXPOSED)
&& (sc_set->state != FSS_SC_RECOVERED)) {
status = NT_STATUS_INVALID_SERVER_STATE;
goto err_tmp_free;
}
sc = sc_lookup(sc_set->scs, &r->in.ShadowCopyId);
if (sc == NULL) {
status = NT_STATUS_INVALID_PARAMETER;
goto err_tmp_free;
}
status = fss_unc_parse(tmp_ctx, r->in.ShareName, NULL, &share);
if (!NT_STATUS_IS_OK(status)) {
goto err_tmp_free;
}
sc_smap = sc_smap_lookup(sc->smaps, share);
if (sc_smap == NULL) {
status = NT_STATUS_INVALID_PARAMETER;
goto err_tmp_free;
}
status = sc_smap_unexpose(p->msg_ctx, sc_smap, false);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("failed to remove share %s: %s\n",
sc_smap->sc_share_name, nt_errstr(status)));
goto err_tmp_free;
}
message_send_all(p->msg_ctx, MSG_SMB_FORCE_TDIS, sc_smap->sc_share_name,
strlen(sc_smap->sc_share_name) + 1, NULL);
if (sc->smaps_count > 1) {
/* do not delete the underlying snapshot - still in use */
status = NT_STATUS_OK;
goto err_tmp_free;
}
snum = find_service(tmp_ctx, sc_smap->share_name, &service);
if ((snum == -1) || (service == NULL)) {
DEBUG(0, ("share at %s not found\n", sc_smap->share_name));
status = NT_STATUS_UNSUCCESSFUL;
goto err_tmp_free;
}
status = fss_vfs_conn_create(tmp_ctx, server_event_context(),
p->msg_ctx, p->session_info, snum, &conn);
if (!NT_STATUS_IS_OK(status)) {
goto err_tmp_free;
}
if (!become_user_by_session(conn, p->session_info)) {
DEBUG(0, ("failed to become user\n"));
status = NT_STATUS_ACCESS_DENIED;
goto err_conn_destroy;
}
status = SMB_VFS_SNAP_DELETE(conn, tmp_ctx, sc->volume_name,
sc->sc_path);
unbecome_user();
if (!NT_STATUS_IS_OK(status)) {
goto err_conn_destroy;
}
/* XXX set timeout r->in.TimeOutInMilliseconds */
DEBUG(6, ("good snap delete\n"));
DLIST_REMOVE(sc->smaps, sc_smap);
sc->smaps_count--;
talloc_free(sc_smap);
if (sc->smaps_count == 0) {
DLIST_REMOVE(sc_set->scs, sc);
sc_set->scs_count--;
talloc_free(sc);
if (sc_set->scs_count == 0) {
DLIST_REMOVE(fss_global.sc_sets, sc_set);
fss_global.sc_sets_count--;
talloc_free(sc_set);
}
}
become_root();
status = fss_state_store(fss_global.mem_ctx, fss_global.sc_sets,
fss_global.sc_sets_count, fss_global.db_path);
unbecome_root();
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("failed to store fss server state: %s\n",
nt_errstr(status)));
}
status = NT_STATUS_OK;
err_conn_destroy:
fss_vfs_conn_destroy(conn);
err_tmp_free:
talloc_free(tmp_ctx);
err_out:
return fss_ntstatus_map(status);
}
static struct tevent_req *smbd_smb2_read_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
uint32_t in_smbpid,
uint64_t in_file_id_volatile,
uint32_t in_length,
uint64_t in_offset,
uint32_t in_minimum,
uint32_t in_remaining)
{
NTSTATUS status;
struct tevent_req *req = NULL;
struct smbd_smb2_read_state *state = NULL;
struct smb_request *smbreq = NULL;
connection_struct *conn = smb2req->tcon->compat_conn;
files_struct *fsp = NULL;
ssize_t nread = -1;
struct lock_struct lock;
int saved_errno;
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_read_state);
if (req == NULL) {
return NULL;
}
state->smb2req = smb2req;
state->in_length = in_length;
state->in_offset = in_offset;
state->in_minimum = in_minimum;
state->out_data = data_blob_null;
state->out_remaining = 0;
DEBUG(10,("smbd_smb2_read: file_id[0x%016llX]\n",
(unsigned long long)in_file_id_volatile));
smbreq = smbd_smb2_fake_smb_request(smb2req);
if (tevent_req_nomem(smbreq, req)) {
return tevent_req_post(req, ev);
}
fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
if (fsp == NULL) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (conn != fsp->conn) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (smb2req->session->vuid != fsp->vuid) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (fsp->is_directory) {
tevent_req_nterror(req, NT_STATUS_INVALID_DEVICE_REQUEST);
return tevent_req_post(req, ev);
}
state->fsp = fsp;
state->in_file_id_volatile = in_file_id_volatile;
if (IS_IPC(smbreq->conn)) {
struct tevent_req *subreq = NULL;
state->out_data = data_blob_talloc(state, NULL, in_length);
if (in_length > 0 && tevent_req_nomem(state->out_data.data, req)) {
return tevent_req_post(req, ev);
}
if (!fsp_is_np(fsp)) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
subreq = np_read_send(state, server_event_context(),
fsp->fake_file_handle,
state->out_data.data,
state->out_data.length);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq,
smbd_smb2_read_pipe_done,
req);
return req;
}
if (!CHECK_READ(fsp, smbreq)) {
tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
return tevent_req_post(req, ev);
}
status = schedule_smb2_aio_read(fsp->conn,
smbreq,
fsp,
state,
&state->out_data,
(SMB_OFF_T)in_offset,
(size_t)in_length);
if (NT_STATUS_IS_OK(status)) {
/*
* Doing an async read. Don't
* send a "gone async" message
* as we expect this to be less
* than the client timeout period.
* JRA. FIXME for offline files..
* FIXME. Add cancel code..
*/
smb2req->async = true;
return req;
}
if (!NT_STATUS_EQUAL(status, NT_STATUS_RETRY)) {
/* Real error in setting up aio. Fail. */
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
/* Fallback to synchronous. */
init_strict_lock_struct(fsp,
in_file_id_volatile,
in_offset,
in_length,
READ_LOCK,
&lock);
if (!SMB_VFS_STRICT_LOCK(conn, fsp, &lock)) {
tevent_req_nterror(req, NT_STATUS_FILE_LOCK_CONFLICT);
return tevent_req_post(req, ev);
}
/* Try sendfile in preference. */
status = schedule_smb2_sendfile_read(smb2req, state);
if (NT_STATUS_IS_OK(status)) {
tevent_req_done(req);
return tevent_req_post(req, ev);
} else {
if (!NT_STATUS_EQUAL(status, NT_STATUS_RETRY)) {
SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock);
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
}
/* Ok, read into memory. Allocate the out buffer. */
state->out_data = data_blob_talloc(state, NULL, in_length);
if (in_length > 0 && tevent_req_nomem(state->out_data.data, req)) {
SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock);
return tevent_req_post(req, ev);
}
nread = read_file(fsp,
(char *)state->out_data.data,
in_offset,
in_length);
saved_errno = errno;
SMB_VFS_STRICT_UNLOCK(conn, fsp, &lock);
DEBUG(10,("smbd_smb2_read: file %s handle [0x%016llX] offset=%llu "
"len=%llu returned %lld\n",
fsp_str_dbg(fsp),
(unsigned long long)in_file_id_volatile,
(unsigned long long)in_offset,
(unsigned long long)in_length,
(long long)nread));
status = smb2_read_complete(req, nread, saved_errno);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
} else {
/* Success. */
tevent_req_done(req);
}
return tevent_req_post(req, ev);
}
static ssize_t read_fd(int fd, void *ptr, size_t nbytes, int *recvfd)
{
struct iovec iov[1];
struct msghdr msg = { .msg_iov = iov, .msg_iovlen = 1 };
ssize_t n;
size_t bufsize = msghdr_prep_recv_fds(NULL, NULL, 0, 1);
uint8_t buf[bufsize];
msghdr_prep_recv_fds(&msg, buf, bufsize, 1);
iov[0].iov_base = (void *)ptr;
iov[0].iov_len = nbytes;
do {
n = recvmsg(fd, &msg, 0);
} while ((n == -1) && (errno == EINTR));
if (n <= 0) {
return n;
}
{
size_t num_fds = msghdr_extract_fds(&msg, NULL, 0);
int fds[num_fds];
msghdr_extract_fds(&msg, fds, num_fds);
if (num_fds != 1) {
size_t i;
for (i=0; i<num_fds; i++) {
close(fds[i]);
}
*recvfd = -1;
return n;
}
*recvfd = fds[0];
}
return(n);
}
static ssize_t write_fd(int fd, void *ptr, size_t nbytes, int sendfd)
{
struct msghdr msg = {0};
size_t bufsize = msghdr_prep_fds(NULL, NULL, 0, &sendfd, 1);
uint8_t buf[bufsize];
struct iovec iov;
ssize_t sent;
msghdr_prep_fds(&msg, buf, bufsize, &sendfd, 1);
iov.iov_base = (void *)ptr;
iov.iov_len = nbytes;
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
do {
sent = sendmsg(fd, &msg, 0);
} while ((sent == -1) && (errno == EINTR));
return sent;
}
static void aio_child_cleanup(struct tevent_context *event_ctx,
struct tevent_timer *te,
struct timeval now,
void *private_data)
{
struct aio_child_list *list = talloc_get_type_abort(
private_data, struct aio_child_list);
struct aio_child *child, *next;
TALLOC_FREE(list->cleanup_event);
for (child = list->children; child != NULL; child = next) {
next = child->next;
if (child->busy) {
DEBUG(10, ("child %d currently active\n",
(int)child->pid));
continue;
}
if (child->dont_delete) {
DEBUG(10, ("Child %d was active since last cleanup\n",
(int)child->pid));
child->dont_delete = false;
continue;
}
DEBUG(10, ("Child %d idle for more than 30 seconds, "
"deleting\n", (int)child->pid));
TALLOC_FREE(child);
child = next;
}
if (list->children != NULL) {
/*
* Re-schedule the next cleanup round
*/
list->cleanup_event = tevent_add_timer(server_event_context(), list,
timeval_add(&now, 30, 0),
aio_child_cleanup, list);
}
}
static struct aio_child_list *init_aio_children(struct vfs_handle_struct *handle)
{
struct aio_child_list *data = NULL;
if (SMB_VFS_HANDLE_TEST_DATA(handle)) {
SMB_VFS_HANDLE_GET_DATA(handle, data, struct aio_child_list,
return NULL);
}
if (data == NULL) {
data = talloc_zero(NULL, struct aio_child_list);
if (data == NULL) {
return NULL;
}
}
/*
* Regardless of whether the child_list had been around or not, make
* sure that we have a cleanup timed event. This timed event will
* delete itself when it finds that no children are around anymore.
*/
if (data->cleanup_event == NULL) {
data->cleanup_event = tevent_add_timer(server_event_context(), data,
timeval_current_ofs(30, 0),
aio_child_cleanup, data);
if (data->cleanup_event == NULL) {
TALLOC_FREE(data);
return NULL;
}
}
if (!SMB_VFS_HANDLE_TEST_DATA(handle)) {
SMB_VFS_HANDLE_SET_DATA(handle, data, free_aio_children,
struct aio_child_list, return False);
}
