diff --git a/crmd/subsystems.c b/crmd/subsystems.c index 26b9dac217..dc25a429d3 100644 --- a/crmd/subsystems.c +++ b/crmd/subsystems.c @@ -1,268 +1,267 @@ /* * Copyright (C) 2004 Andrew Beekhof * * 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 2.1 of the License, or (at your option) any later version. * * This software 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 library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include /* for access */ #include #include #include #include /* for calls to open */ #include /* for calls to open */ #include /* for calls to open */ #include /* for getpwuid */ #include /* for initgroups */ #include /* for getrlimit */ #include /* for getrlimit */ #include #include #include #include #include #include #include #include static void crmdManagedChildRegistered(ProcTrack* p) { struct crm_subsystem_s *the_subsystem = p->privatedata; the_subsystem->pid = p->pid; } #define PE_WORKING_DIR HA_VARLIBDIR"/heartbeat/pengine" static void save_cib_contents(xmlNode *msg, int call_id, int rc, xmlNode *output, void *user_data) { char *pid = user_data; if(rc == cib_ok) { char *filename = NULL; filename = generate_series_filename(PE_WORKING_DIR, "pe-core", crm_atoi(pid, 0), TRUE); if(write_xml_file(output, filename, TRUE) < 0) { crm_err("Could not save CIB contents after PE crash to %s", filename); } else { crm_notice("Saved CIB contents after PE crash to %s", filename); } crm_free(filename); } crm_free(pid); } static void crmdManagedChildDied( ProcTrack* p, int status, int signo, int exitcode, int waslogged) { struct crm_subsystem_s *the_subsystem = p->privatedata; pid_t local_pid = the_subsystem->pid; crm_info("Process %s:[%d] exited (signal=%d, exitcode=%d)", the_subsystem->name, the_subsystem->pid, signo, exitcode); the_subsystem->pid = -1; the_subsystem->ipc = NULL; clear_bit_inplace(fsa_input_register, the_subsystem->flag_connected); crm_debug_3("Triggering FSA: %s", __FUNCTION__); G_main_set_trigger(fsa_source); if(is_set(fsa_input_register, the_subsystem->flag_required)) { /* this wasnt supposed to happen */ crm_err("The %s subsystem terminated unexpectedly", the_subsystem->name); if(the_subsystem->flag_connected == R_PE_CONNECTED) { int rc = cib_ok; char *pid = crm_itoa(local_pid); /* the PE died... * save the current CIB so that we have a chance of * figuring out what killed it */ rc = fsa_cib_conn->cmds->query( fsa_cib_conn, NULL, NULL, cib_scope_local); add_cib_op_callback(rc, TRUE, pid, save_cib_contents); } register_fsa_input_before(C_FSA_INTERNAL, I_ERROR, NULL); } p->privatedata = NULL; } static const char * crmdManagedChildName(ProcTrack* p) { struct crm_subsystem_s *the_subsystem = p->privatedata; return the_subsystem->name; } static ProcTrack_ops crmd_managed_child_ops = { crmdManagedChildDied, crmdManagedChildRegistered, crmdManagedChildName }; gboolean stop_subsystem(struct crm_subsystem_s *the_subsystem, gboolean force_quit) { int quit_signal = SIGTERM; crm_debug_2("Stopping sub-system \"%s\"", the_subsystem->name); clear_bit_inplace(fsa_input_register, the_subsystem->flag_required); if (the_subsystem->pid <= 0) { crm_debug_2("Client %s not running", the_subsystem->name); return FALSE; } if(is_set(fsa_input_register, the_subsystem->flag_connected) == FALSE) { /* running but not yet connected */ crm_debug("Stopping %s before it had connected", the_subsystem->name); } /* if(force_quit && the_subsystem->sent_kill == FALSE) { quit_signal = SIGKILL; } else if(force_quit) { crm_debug("Already sent -KILL to %s: [%d]", the_subsystem->name, the_subsystem->pid); } */ errno = 0; if(CL_KILL(the_subsystem->pid, quit_signal) == 0) { crm_info("Sent -TERM to %s: [%d]", the_subsystem->name, the_subsystem->pid); the_subsystem->sent_kill = TRUE; } else { cl_perror("Sent -TERM to %s: [%d]", the_subsystem->name, the_subsystem->pid); } return TRUE; } gboolean start_subsystem(struct crm_subsystem_s* the_subsystem) { pid_t pid; struct stat buf; int s_res; unsigned int j; struct rlimit oflimits; const char *devnull = "/dev/null"; const char *use_valgrind = getenv("HA_VALGRIND_ENABLED"); - use_valgrind = NULL; crm_info("Starting sub-system \"%s\"", the_subsystem->name); set_bit_inplace(fsa_input_register, the_subsystem->flag_required); if (the_subsystem->pid > 0) { crm_warn("Client %s already running as pid %d", the_subsystem->name, (int) the_subsystem->pid); /* starting a started X is not an error */ return TRUE; } /* * We want to ensure that the exec will succeed before * we bother forking. */ if (access(the_subsystem->path, F_OK|X_OK) != 0) { cl_perror("Cannot (access) exec %s", the_subsystem->path); return FALSE; } s_res = stat(the_subsystem->command, &buf); if(s_res != 0) { cl_perror("Cannot (stat) exec %s", the_subsystem->command); return FALSE; } /* We need to fork so we can make child procs not real time */ switch(pid=fork()) { case -1: crm_err("Cannot fork."); return FALSE; default: /* Parent */ NewTrackedProc(pid, 0, PT_LOGNORMAL, the_subsystem, &crmd_managed_child_ops); crm_debug_2("Client %s is has pid: %d", the_subsystem->name, pid); the_subsystem->pid = pid; return TRUE; case 0: /* Child */ /* create a new process group to avoid * being interupted by heartbeat */ setpgid(0, 0); break; } crm_debug("Executing \"%s (%s)\" (pid %d)", the_subsystem->command, the_subsystem->name, (int) getpid()); /* A precautionary measure */ getrlimit(RLIMIT_NOFILE, &oflimits); for (j=0; j < oflimits.rlim_cur; ++j) { close(j); } (void)open(devnull, O_RDONLY); /* Stdin: fd 0 */ (void)open(devnull, O_WRONLY); /* Stdout: fd 1 */ (void)open(devnull, O_WRONLY); /* Stderr: fd 2 */ if(crm_is_true(use_valgrind)) { char *opts[] = { crm_strdup(VALGRIND_BIN), crm_strdup(the_subsystem->command), NULL }; (void)execvp(VALGRIND_BIN, opts); } else { char *opts[] = { crm_strdup(the_subsystem->command), NULL }; (void)execvp(the_subsystem->command, opts); } /* Should not happen */ cl_perror("FATAL: Cannot exec %s", the_subsystem->command); exit(100); /* Suppress respawning */ return TRUE; /* never reached */ }