diff --git a/src/main.c b/src/main.c index c7e3aba..908d188 100644 --- a/src/main.c +++ b/src/main.c @@ -1,1236 +1,1236 @@ /* * Copyright (C) 2011 Jiaju Zhang * Copyright (C) 2013 Philipp Marek * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "log.h" #include "booth.h" #include "config.h" #include "transport.h" #include "timer.h" #include "pacemaker.h" #include "ticket.h" #define RELEASE_VERSION "1.0" #define CLIENT_NALLOC 32 int daemonize = 0; static int client_maxi; static int client_size = 0; struct client *client = NULL; struct pollfd *pollfd = NULL; typedef enum { BOOTHD_STARTED=0, BOOTHD_STARTING } BOOTH_DAEMON_STATE; int poll_timeout = -1; typedef enum { OP_LIST = 1, OP_GRANT, OP_REVOKE, } operation_t; struct command_line { int type; /* ACT_ */ int op; /* OP_ */ char configfile[BOOTH_PATH_LEN]; char lockfile[BOOTH_PATH_LEN]; struct boothc_site_ticket_msg msg; }; static struct command_line cl; int do_read(int fd, void *buf, size_t count) { int rv, off = 0; while (off < count) { rv = read(fd, (char *)buf + off, count - off); if (rv == 0) return -1; if (rv == -1 && errno == EINTR) continue; if (rv == -1) return -1; off += rv; } return 0; } int do_write(int fd, void *buf, size_t count) { int rv, off = 0; retry: rv = write(fd, (char *)buf + off, count); if (rv == -1 && errno == EINTR) goto retry; /* If we cannot write _any_ data, we'd be in an (potential) loop. */ if (rv <= 0) { log_error("write failed: %s (%d)", strerror(errno), errno); return rv; } if (rv != count) { count -= rv; off += rv; goto retry; } return 0; } static int do_local_connect_and_write(void *data, int len, struct booth_node **ret) { struct booth_node *node; int rv; if (ret) *ret = NULL; /* Use locally reachable address, ie. in same cluster. */ if (!find_myself(&node, 1)) { log_error("Cannot find local cluster."); return ENOENT; } if (ret) *ret = node; /* Always use TCP within cluster. */ rv = booth_tcp_open(node); if (rv < 0) goto out; rv = booth_tcp_send(node, data, len); out: return rv; } static void init_header(struct boothc_header *h, int cmd, int result, int data_len) { memset(h, 0, sizeof(struct boothc_header)); h->magic = BOOTHC_MAGIC; h->version = BOOTHC_VERSION; h->len = data_len; h->cmd = cmd; h->result = result; } static void client_alloc(void) { int i; if (!client) { client = malloc(CLIENT_NALLOC * sizeof(struct client)); pollfd = malloc(CLIENT_NALLOC * sizeof(struct pollfd)); } else { client = realloc(client, (client_size + CLIENT_NALLOC) * sizeof(struct client)); pollfd = realloc(pollfd, (client_size + CLIENT_NALLOC) * sizeof(struct pollfd)); if (!pollfd) log_error("can't alloc for pollfd"); } if (!client || !pollfd) log_error("can't alloc for client array"); for (i = client_size; i < client_size + CLIENT_NALLOC; i++) { client[i].workfn = NULL; client[i].deadfn = NULL; client[i].fd = -1; pollfd[i].fd = -1; pollfd[i].revents = 0; } client_size += CLIENT_NALLOC; } static void client_dead(int ci) { close(client[ci].fd); client[ci].workfn = NULL; client[ci].fd = -1; pollfd[ci].fd = -1; } int client_add(int fd, void (*workfn)(int ci), void (*deadfn)(int ci)) { int i; if (!client) client_alloc(); again: for (i = 0; i < client_size; i++) { if (client[i].fd == -1) { client[i].workfn = workfn; if (deadfn) client[i].deadfn = deadfn; else client[i].deadfn = client_dead; client[i].fd = fd; pollfd[i].fd = fd; pollfd[i].events = POLLIN; if (i > client_maxi) client_maxi = i; return i; } } client_alloc(); goto again; } void process_connection(int ci) { struct boothc_site_ticket_msg msg; char *data = NULL; int ticket_owner; int is_local, rv; void (*deadfn) (int ci); rv = do_read(client[ci].fd, &msg.header, sizeof(msg.header)); if (rv < 0) { if (errno == ECONNRESET) log_debug("client %d connection reset for fd %d", ci, client[ci].fd); deadfn = client[ci].deadfn; if(deadfn) { deadfn(ci); } return; } if (msg.header.magic != BOOTHC_MAGIC) { log_error("connection %d magic error %x", ci, msg.header.magic); return; } if (msg.header.version != BOOTHC_VERSION) { log_error("connection %d version error %x", ci, msg.header.version); return; } if (msg.header.len) { if (msg.header.len != sizeof(msg) - sizeof(msg.header)) { log_error("got wrong length %u", msg.header.len); return; } rv = do_read(client[ci].fd, msg.header.data, msg.header.len); if (rv < 0) { log_error("connection %d read data error %d", ci, rv); goto out; } } switch (msg.header.cmd) { case BOOTHC_CMD_LIST: assert(!data); msg.header.result = list_ticket(&data, &msg.header.len); break; case BOOTHC_CMD_GRANT: msg.header.len = 0; if (!check_ticket(msg.ticket)) { msg.header.result = BOOTHC_RLT_INVALID_ARG; goto reply; } if (get_ticket_info(msg.ticket, &ticket_owner, NULL) == 0) { if (ticket_owner > -1) { log_error("client want to get an granted " "ticket %s", msg.ticket); msg.header.result = BOOTHC_RLT_OVERGRANT; goto reply; } } else { log_error("can not get ticket %s's info", msg.ticket); msg.header.result = BOOTHC_RLT_INVALID_ARG; goto reply; } if (!check_site(msg.site, &is_local)) { msg.header.result = BOOTHC_RLT_INVALID_ARG; goto reply; } if (is_local) msg.header.result = grant_ticket(msg.ticket); else msg.header.result = BOOTHC_RLT_REMOTE_OP; break; case BOOTHC_CMD_REVOKE: msg.header.len = 0; if (!check_ticket(msg.ticket)) { msg.header.result = BOOTHC_RLT_INVALID_ARG; goto reply; } if (!check_site(msg.site, &is_local)) { msg.header.result = BOOTHC_RLT_INVALID_ARG; goto reply; } if (is_local) msg.header.result = revoke_ticket(msg.ticket); else msg.header.result = BOOTHC_RLT_REMOTE_OP; break; case BOOTHC_CMD_CATCHUP: msg.header.result = catchup_ticket(&data, msg.header.len); break; default: log_error("connection %d cmd %x unknown", ci, msg.header.cmd); break; } reply: rv = do_write(client[ci].fd, &msg.header, sizeof(msg.header)); if (rv < 0) log_error("connection %d write error %d", ci, rv); if (msg.header.len) { rv = do_write(client[ci].fd, data, msg.header.len); if (rv < 0) log_error("connection %d write error %d", ci, rv); } out: free(data); } static void process_listener(int ci) { int fd, i; fd = accept(client[ci].fd, NULL, NULL); if (fd < 0) { log_error("process_listener: accept error for fd %d: %s (%d)", client[ci].fd, strerror(errno), errno); if (client[ci].deadfn) client[ci].deadfn(ci); return; } i = client_add(fd, process_connection, NULL); log_debug("add client connection %d fd %d", i, fd); } static int setup_config(int type) { int rv; rv = read_config(cl.configfile); if (rv < 0) goto out; /* Set "local" pointer, ignoring errors. */ find_myself(NULL, 0); rv = check_config(type); if (rv < 0) goto out; /* Per default the PID file name is derived from the * configuration name. */ if (!cl.lockfile[0]) { snprintf(cl.lockfile, sizeof(cl.lockfile)-1, "%s/%s.pid", BOOTH_RUN_DIR, booth_conf->name); } out: return rv; } static int setup_transport(void) { int rv; rv = transport()->init(ticket_recv); if (rv < 0) { log_error("failed to init booth_transport %s", transport()->name); goto out; } rv = booth_transport[TCP].init(NULL); if (rv < 0) { log_error("failed to init booth_transport[TCP]"); goto out; } out: return rv; } static int setup_timer(void) { return timerlist_init(); } static int write_daemon_state(int fd, int state) { char buffer[1024]; int rv, size; size = sizeof(buffer) - 1; rv = snprintf(buffer, size, "booth_pid=%d " "booth_state=%s " "booth_type=%s " "booth_cfg_name='%s' " "booth_addr_string='%s' " "booth_port=%d\n", getpid(), ( state == BOOTHD_STARTED ? "started" : state == BOOTHD_STARTING ? "starting" : "invalid"), type_to_string(local->type), booth_conf->name, local->addr_string, booth_conf->port); if (rv < 0 || rv == size) { log_error("Buffer filled up in write_daemon_state()."); return -1; } size = rv; rv = lseek(fd, 0, SEEK_SET); if (rv < 0) { log_error("lseek set fd(%d) offset to 0 error, return(%d), message(%s)", fd, rv, strerror(errno)); rv = -1; return rv; } rv = write(fd, buffer, size); if (rv != size) { log_error("write to fd(%d, %d) returned %d, errno %d, message(%s)", fd, size, rv, errno, strerror(errno)); return -1; } return 0; } static int loop(int fd) { void (*workfn) (int ci); void (*deadfn) (int ci); int rv, i; rv = setup_timer(); if (rv < 0) goto fail; rv = setup_transport(); if (rv < 0) goto fail; rv = setup_ticket(); if (rv < 0) goto fail; client_add(rv, process_listener, NULL); rv = write_daemon_state(fd, BOOTHD_STARTED); if (rv != 0) { log_error("write daemon state %d to lockfile error %s: %s", BOOTHD_STARTED, cl.lockfile, strerror(errno)); goto fail; } if (cl.type == ARBITRATOR) log_info("BOOTH arbitrator daemon started"); else if (cl.type == SITE) log_info("BOOTH cluster site daemon started"); while (1) { rv = poll(pollfd, client_maxi + 1, poll_timeout); if (rv == -1 && errno == EINTR) continue; if (rv < 0) { log_error("poll failed: %s (%d)", strerror(errno), errno); goto fail; } for (i = 0; i <= client_maxi; i++) { if (client[i].fd < 0) continue; if (pollfd[i].revents & POLLIN) { workfn = client[i].workfn; if (workfn) workfn(i); } if (pollfd[i].revents & (POLLERR | POLLHUP | POLLNVAL)) { deadfn = client[i].deadfn; if (deadfn) deadfn(i); } } process_timerlist(); } return 0; fail: return -1; } static int query_get_string_answer(cmd_request_t cmd) { struct booth_node *node; struct boothc_header h, *rh; char *reply = NULL, *data; int data_len; int rv; init_header(&h, cmd, 0, 0); rv = do_local_connect_and_write(&h, sizeof(h), &node); if (rv < 0) goto out; reply = malloc(sizeof(struct boothc_header)); if (!reply) { rv = -ENOMEM; goto out_close; } rv = local_transport->recv(node, reply, sizeof(struct boothc_header)); if (rv < 0) goto out_free; rh = (struct boothc_header *)reply; data_len = rh->len; reply = realloc(reply, sizeof(struct boothc_header) + data_len); if (!reply) { rv = -ENOMEM; goto out_free; } data = reply + sizeof(struct boothc_header); rv = local_transport->recv(node, data, data_len); if (rv < 0) goto out_free; do_write(STDOUT_FILENO, data, data_len); rv = 0; out_free: free(reply); out_close: local_transport->close(node); out: return rv; } static int do_command(cmd_request_t cmd) { struct booth_node *node, *to; struct boothc_header reply; int rv; node = NULL; to = NULL; init_header(&cl.msg.header, cmd, 0, sizeof(cl.msg) - sizeof(cl.msg.header)); rv = do_local_connect_and_write(&cl.msg, sizeof(cl.msg), &node); if (rv < 0) goto out_close; rv = local_transport->recv(node, &reply, sizeof(reply)); if (rv < 0) goto out_close; if (reply.result == BOOTHC_RLT_INVALID_ARG) { log_info("invalid argument!"); rv = -1; goto out_close; } if (reply.result == BOOTHC_RLT_OVERGRANT) { log_info("You're granting a granted ticket " "If you wanted to migrate a ticket," "use revoke first, then use grant"); rv = -1; goto out_close; } if (reply.result == BOOTHC_RLT_REMOTE_OP) { if (!find_site_in_config(cl.msg.site, &to)) { log_error("Redirected to unknown site %s.", cl.msg.site); rv = -1; goto out_close; } rv = booth_transport[TCP].open(to); if (rv < 0) { goto out_close; } rv = booth_transport[TCP].send(to, &cl.msg, sizeof(cl.msg)); if (rv < 0) { booth_transport[TCP].close(to); goto out_close; } rv = booth_transport[TCP].recv(to, &reply, sizeof(struct boothc_header)); if (rv < 0) { booth_transport[TCP].close(to); goto out_close; } booth_transport[TCP].close(to); } if (reply.result == BOOTHC_RLT_ASYNC) { if (cmd == BOOTHC_CMD_GRANT) log_info("grant command sent, result will be returned " "asynchronously, you can get the result from " "the log files"); else if (cmd == BOOTHC_CMD_REVOKE) log_info("revoke command sent, result will be returned " "asynchronously, you can get the result from " "the log files."); else log_error("internal error reading reply result!"); rv = 0; } else if (reply.result == BOOTHC_RLT_SYNC_SUCC) { if (cmd == BOOTHC_CMD_GRANT) log_info("grant succeeded!"); else if (cmd == BOOTHC_CMD_REVOKE) log_info("revoke succeeded!"); rv = 0; } else if (reply.result == BOOTHC_RLT_SYNC_FAIL) { if (cmd == BOOTHC_CMD_GRANT) log_info("grant failed!"); else if (cmd == BOOTHC_CMD_REVOKE) log_info("revoke failed!"); rv = -1; } else { log_error("internal error!"); rv = -1; } out_close: if (node) local_transport->close(node); if (to) booth_transport[TCP].close(to); return rv; } static int do_grant(void) { return do_command(BOOTHC_CMD_GRANT); } static int do_revoke(void) { return do_command(BOOTHC_CMD_REVOKE); } static int _lockfile(int mode, int *fdp, pid_t *locked_by) { struct flock lock; int fd, rv; /* After reboot the directory may not yet exist. * Try to create it, but ignore errors. */ if (strncmp(cl.lockfile, BOOTH_RUN_DIR, strlen(BOOTH_RUN_DIR)) == 0) mkdir(BOOTH_RUN_DIR, 0775); if (locked_by) *locked_by = 0; *fdp = -1; fd = open(cl.lockfile, mode, 0664); if (fd < 0) return errno; *fdp = fd; lock.l_type = F_WRLCK; lock.l_start = 0; lock.l_whence = SEEK_SET; lock.l_len = 0; lock.l_pid = 0; if (fcntl(fd, F_SETLK, &lock) == 0) return 0; rv = errno; if (locked_by) if (fcntl(fd, F_GETLK, &lock) == 0) *locked_by = lock.l_pid; return rv; } static int lockfile(void) { int rv, fd; fd = -1; rv = _lockfile(O_CREAT | O_WRONLY, &fd, NULL); if (fd == -1) { log_error("lockfile %s open error %d: %s", cl.lockfile, rv, strerror(rv)); return -1; } if (rv < 0) { log_error("lockfile %s setlk error %d: %s", cl.lockfile, rv, strerror(rv)); goto fail; } rv = ftruncate(fd, 0); if (rv < 0) { log_error("lockfile %s truncate error %d: %s", cl.lockfile, errno, strerror(errno)); goto fail; } rv = write_daemon_state(fd, BOOTHD_STARTING); if (rv != 0) { log_error("write daemon state %d to lockfile error %s: %s", BOOTHD_STARTING, cl.lockfile, strerror(errno)); goto fail; } return fd; fail: close(fd); return -1; } static void unlink_lockfile(int fd) { unlink(cl.lockfile); close(fd); } static void print_usage(void) { printf("Usage:\n"); printf("booth [options]\n"); printf("\n"); printf("Types:\n"); printf(" arbitrator: daemon running on arbitrator\n"); printf(" site: daemon running on cluster site\n"); printf(" client: command running from client\n"); printf("\n"); printf("Operations:\n"); printf("Please note that operations are valid iff type is client!\n"); printf(" list: List all the tickets\n"); printf(" grant: Grant ticket T(-t T) to site S(-s S)\n"); printf(" revoke: Revoke ticket T(-t T) from site S(-s S)\n"); printf("\n"); printf("Options:\n"); printf(" -c FILE Specify config file [default " BOOTH_DEFAULT_CONF "]\n"); printf(" -l LOCKFILE Specify lock file path\n"); printf(" -D Enable debugging to stderr and don't fork\n"); printf(" -t ticket name\n"); printf(" -S report local daemon status (for site and arbitrator)\n"); printf(" RA script compliant return codes.\n"); printf(" -s site name\n"); printf(" -h Print this help, then exit\n"); } #define OPTION_STRING "c:Dl:t:s:hS" void safe_copy(char *dest, char *value, size_t buflen, const char *description) { int content_len = buflen - 1; if (strlen(value) >= content_len) { fprintf(stderr, "'%s' exceeds maximum %s length of %d\n", value, description, content_len); exit(EXIT_FAILURE); } strncpy(dest, value, content_len); dest[content_len] = 0; } static int host_convert(char *hostname, char *ip_str, size_t ip_size) { struct addrinfo *result = NULL, hints = {0}; int re = -1; memset(&hints, 0, sizeof(hints)); hints.ai_family = BOOTH_PROTO_FAMILY; hints.ai_socktype = SOCK_DGRAM; re = getaddrinfo(hostname, NULL, &hints, &result); if (re == 0) { struct in_addr addr = ((struct sockaddr_in *)result->ai_addr)->sin_addr; const char *re_ntop = inet_ntop(BOOTH_PROTO_FAMILY, &addr, ip_str, ip_size); if (re_ntop == NULL) { re = -1; } } freeaddrinfo(result); return re; } static int read_arguments(int argc, char **argv) { int optchar; char *arg1 = argv[1]; char *op = NULL; char site_arg[INET_ADDRSTRLEN] = {0}; if (argc < 2 || !strcmp(arg1, "help") || !strcmp(arg1, "--help") || !strcmp(arg1, "-h")) { print_usage(); exit(EXIT_SUCCESS); } if (!strcmp(arg1, "version") || !strcmp(arg1, "--version") || !strcmp(arg1, "-V")) { printf("%s %s (built %s %s)\n", argv[0], RELEASE_VERSION, __DATE__, __TIME__); exit(EXIT_SUCCESS); } if (strcmp(arg1, "arbitrator") == 0 || strcmp(arg1, "site") == 0 || strcmp(arg1, "start") == 0 || strcmp(arg1, "daemon") == 0) { cl.type = DAEMON; optind = 2; } else if (strcmp(arg1, "status") == 0) { cl.type = STATUS; optind = 2; } else if (strcmp(arg1, "client") == 0) { cl.type = CLIENT; if (argc < 3) { print_usage(); exit(EXIT_FAILURE); } op = argv[2]; optind = 3; } else { cl.type = CLIENT; op = argv[1]; optind = 2; } switch (cl.type) { case ARBITRATOR: break; case SITE: break; case CLIENT: if (!strcmp(op, "list")) cl.op = OP_LIST; else if (!strcmp(op, "grant")) cl.op = OP_GRANT; else if (!strcmp(op, "revoke")) cl.op = OP_REVOKE; else { fprintf(stderr, "client operation \"%s\" is unknown\n", op); exit(EXIT_FAILURE); } break; } while (optind < argc) { optchar = getopt(argc, argv, OPTION_STRING); switch (optchar) { case 'c': safe_copy(cl.configfile, optarg, sizeof(cl.configfile), "config file"); break; case 'D': daemonize = 1; debug_level++; break; case 'l': safe_copy(cl.lockfile, optarg, sizeof(cl.lockfile), "lock file"); break; case 't': if (cl.op == OP_GRANT || cl.op == OP_REVOKE) { safe_copy(cl.msg.ticket, optarg, sizeof(cl.msg.ticket), "ticket name"); } else { print_usage(); exit(EXIT_FAILURE); } break; case 's': if (cl.op == OP_GRANT || cl.op == OP_REVOKE) { int re = host_convert(optarg, site_arg, INET_ADDRSTRLEN); if (re == 0) { safe_copy(cl.msg.site, site_arg, sizeof(cl.msg.ticket), "site name"); } else { safe_copy(cl.msg.site, optarg, sizeof(cl.msg.ticket), "site name"); } } else { print_usage(); exit(EXIT_FAILURE); } break; case 'h': print_usage(); exit(EXIT_SUCCESS); break; case ':': case '?': fprintf(stderr, "Please use '-h' for usage.\n"); exit(EXIT_FAILURE); break; default: fprintf(stderr, "unknown option: %s\n", argv[optind]); exit(EXIT_FAILURE); break; }; } return 0; } static void set_scheduler(void) { struct sched_param sched_param; struct rlimit rlimit; int rv; rlimit.rlim_cur = RLIM_INFINITY; rlimit.rlim_max = RLIM_INFINITY; setrlimit(RLIMIT_MEMLOCK, &rlimit); rv = mlockall(MCL_CURRENT | MCL_FUTURE); if (rv < 0) { log_error("mlockall failed"); } rv = sched_get_priority_max(SCHED_RR); if (rv != -1) { sched_param.sched_priority = rv; rv = sched_setscheduler(0, SCHED_RR, &sched_param); if (rv == -1) log_error("could not set SCHED_RR priority %d: %s (%d)", sched_param.sched_priority, strerror(errno), errno); } else { log_error("could not get maximum scheduler priority err %d", errno); } } static void set_oom_adj(int val) { FILE *fp; fp = fopen("/proc/self/oom_adj", "w"); if (!fp) return; fprintf(fp, "%i", val); fclose(fp); } static int do_status(int type) { - pid_t pid; - int rv, lock_fd, ret; - const char *reason = NULL; - char lockfile_data[1024], *cp; + pid_t pid; + int rv, lock_fd, ret; + const char *reason = NULL; + char lockfile_data[1024], *cp; - ret = PCMK_OCF_NOT_RUNNING; - /* TODO: query all, and return quit only if it's _cleanly_ not - * running, ie. _neither_ of port/lockfile/process is available? - * - * Currently a single failure says "not running", even if "only" the - * lockfile has been removed. */ + ret = PCMK_OCF_NOT_RUNNING; + /* TODO: query all, and return quit only if it's _cleanly_ not + * running, ie. _neither_ of port/lockfile/process is available? + * + * Currently a single failure says "not running", even if "only" the + * lockfile has been removed. */ - rv = setup_config(type); - if (rv) { - reason = "Error reading configuration."; - ret = PCMK_LSB_UNKNOWN_ERROR; - goto quit; - } + rv = setup_config(type); + if (rv) { + reason = "Error reading configuration."; + ret = PCMK_LSB_UNKNOWN_ERROR; + goto quit; + } - if (!local) { - reason = "No Service IP active here."; - goto quit; - } + if (!local) { + reason = "No Service IP active here."; + goto quit; + } - rv = _lockfile(O_RDWR, &lock_fd, &pid); - if (rv == 0) { - reason = "PID file not locked."; - goto quit; - } - if (lock_fd == -1) { - reason = "No PID file."; - goto quit; - } + rv = _lockfile(O_RDWR, &lock_fd, &pid); + if (rv == 0) { + reason = "PID file not locked."; + goto quit; + } + if (lock_fd == -1) { + reason = "No PID file."; + goto quit; + } - if (pid) { - fprintf(stdout, "booth_lockpid=%d ", pid); - fflush(stdout); - } + if (pid) { + fprintf(stdout, "booth_lockpid=%d ", pid); + fflush(stdout); + } - rv = read(lock_fd, lockfile_data, sizeof(lockfile_data) - 1); - if (rv < 4) { - reason = "Cannot read lockfile data."; - ret = PCMK_LSB_UNKNOWN_ERROR; - goto quit; + rv = read(lock_fd, lockfile_data, sizeof(lockfile_data) - 1); + if (rv < 4) { + reason = "Cannot read lockfile data."; + ret = PCMK_LSB_UNKNOWN_ERROR; + goto quit; - } - lockfile_data[rv] = 0; + } + lockfile_data[rv] = 0; - if (lock_fd != -1) - close(lock_fd); + if (lock_fd != -1) + close(lock_fd); - /* Make sure it's only a single line */ - cp = strchr(lockfile_data, '\r'); - if (cp) - *cp = 0; - cp = strchr(lockfile_data, '\n'); - if (cp) - *cp = 0; + /* Make sure it's only a single line */ + cp = strchr(lockfile_data, '\r'); + if (cp) + *cp = 0; + cp = strchr(lockfile_data, '\n'); + if (cp) + *cp = 0; - rv = setup_udp_server(1); - if (rv == 0) { - reason = "UDP port not in use."; - goto quit; - } + rv = setup_udp_server(1); + if (rv == 0) { + reason = "UDP port not in use."; + goto quit; + } - fprintf(stdout, "booth_lockfile='%s' %s\n", - cl.lockfile, lockfile_data); - if (daemonize) - fprintf(stderr, "Booth at %s port %d seems to be running.\n", - local->addr_string, booth_conf->port); - return 0; + fprintf(stdout, "booth_lockfile='%s' %s\n", + cl.lockfile, lockfile_data); + if (daemonize) + fprintf(stderr, "Booth at %s port %d seems to be running.\n", + local->addr_string, booth_conf->port); + return 0; quit: - log_debug("not running: %s", reason); - /* Ie. "DEBUG" */ - if (daemonize) - fprintf(stderr, "not running: %s\n", reason); - return ret; + log_debug("not running: %s", reason); + /* Ie. "DEBUG" */ + if (daemonize) + fprintf(stderr, "not running: %s\n", reason); + return ret; } static int do_server(int type) { int lock_fd = -1; int rv = -1; static char log_ent[128] = DAEMON_NAME "-"; rv = setup_config(type); if (rv < 0) goto out; if (!local) { log_error("Cannot find myself in the configuration."); exit(EXIT_FAILURE); } if (!daemonize) { if (daemon(0, 0) < 0) { perror("daemon error"); exit(EXIT_FAILURE); } } /* The lockfile must be written to _after_ the call to daemon(), so * that the lockfile contains the pid of the daemon, not the parent. */ lock_fd = lockfile(); if (lock_fd < 0) return lock_fd; strcat(log_ent, type_to_string(local->type)); cl_log_set_entity(log_ent); cl_log_enable_stderr(debug_level ? TRUE : FALSE); cl_log_set_facility(HA_LOG_FACILITY); cl_inherit_logging_environment(0); if (local->type == ARBITRATOR) log_info("BOOTH arbitrator daemon is starting."); else if (local->type == SITE) log_info("BOOTH cluster site daemon is starting."); set_scheduler(); set_oom_adj(-16); set_proc_title("%s %s for [%s]:%d", DAEMON_NAME, type_to_string(local->type), local->addr_string, booth_conf->port); rv = loop(lock_fd); out: if (lock_fd >= 0) unlink_lockfile(lock_fd); return rv; } static int do_client(void) { int rv = -1; rv = setup_config(CLIENT); if (rv < 0) { log_error("cannot read config"); goto out; } switch (cl.op) { case OP_LIST: rv = query_get_string_answer(BOOTHC_CMD_LIST); break; case OP_GRANT: rv = do_grant(); break; case OP_REVOKE: rv = do_revoke(); break; } out: return rv; } int main(int argc, char *argv[], char *envp[]) { int rv; init_set_proc_title(argc, argv, envp); memset(&cl, 0, sizeof(cl)); strncpy(cl.configfile, BOOTH_DEFAULT_CONF, BOOTH_PATH_LEN - 1); cl.lockfile[0] = 0; debug_level = 0; cl_log_set_entity("booth"); cl_log_enable_stderr(TRUE); cl_log_set_facility(0); rv = read_arguments(argc, argv); if (rv < 0) goto out; switch (cl.type) { case STATUS: rv = do_status(cl.type); break; case ARBITRATOR: case DAEMON: case SITE: rv = do_server(cl.type); break; case CLIENT: rv = do_client(); break; } out: /* Normalize values. 0x100 would be seen as "OK" by waitpid(). */ return rv >= 0 && rv < 0x70 ? rv : 1; }