| 1 | /* -*- c-file-style: "linux"; -*- |
| 2 | * |
| 3 | * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org> |
| 4 | * Copyright (C) 2001-2002 by Martin Pool <mbp@samba.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * @file |
| 23 | * |
| 24 | * The socket based protocol for setting up a connection with |
| 25 | * rsyncd. |
| 26 | **/ |
| 27 | |
| 28 | #include "rsync.h" |
| 29 | |
| 30 | extern int am_sender; |
| 31 | extern int am_server; |
| 32 | extern int am_daemon; |
| 33 | extern int am_root; |
| 34 | extern int module_id; |
| 35 | extern int read_only; |
| 36 | extern int verbose; |
| 37 | extern int rsync_port; |
| 38 | extern int kludge_around_eof; |
| 39 | extern int daemon_over_rsh; |
| 40 | extern int list_only; |
| 41 | extern int sanitize_paths; |
| 42 | extern int filesfrom_fd; |
| 43 | extern int remote_protocol; |
| 44 | extern int protocol_version; |
| 45 | extern int io_timeout; |
| 46 | extern int orig_umask; |
| 47 | extern int no_detach; |
| 48 | extern int default_af_hint; |
| 49 | extern char *bind_address; |
| 50 | extern struct exclude_list_struct server_exclude_list; |
| 51 | extern char *exclude_path_prefix; |
| 52 | extern char *config_file; |
| 53 | |
| 54 | char *auth_user; |
| 55 | |
| 56 | /** |
| 57 | * Run a client connected to an rsyncd. The alternative to this |
| 58 | * function for remote-shell connections is do_cmd(). |
| 59 | * |
| 60 | * After negotiating which module to use and reading the server's |
| 61 | * motd, this hands over to client_run(). Telling the server the |
| 62 | * module will cause it to chroot/setuid/etc. |
| 63 | * |
| 64 | * Instead of doing a transfer, the client may at this stage instead |
| 65 | * get a listing of remote modules and exit. |
| 66 | * |
| 67 | * @return -1 for error in startup, or the result of client_run(). |
| 68 | * Either way, it eventually gets passed to exit_cleanup(). |
| 69 | **/ |
| 70 | int start_socket_client(char *host, char *path, int argc, char *argv[]) |
| 71 | { |
| 72 | int fd, ret; |
| 73 | char *p, *user=NULL; |
| 74 | |
| 75 | /* this is redundant with code in start_inband_exchange(), but |
| 76 | * this short-circuits a problem before we open a socket, and |
| 77 | * the extra check won't hurt */ |
| 78 | if (*path == '/') { |
| 79 | rprintf(FERROR,"ERROR: The remote path must start with a module name not a /\n"); |
| 80 | return -1; |
| 81 | } |
| 82 | |
| 83 | p = strchr(host, '@'); |
| 84 | if (p) { |
| 85 | user = host; |
| 86 | host = p+1; |
| 87 | *p = 0; |
| 88 | } |
| 89 | |
| 90 | fd = open_socket_out_wrapped(host, rsync_port, bind_address, |
| 91 | default_af_hint); |
| 92 | if (fd == -1) |
| 93 | exit_cleanup(RERR_SOCKETIO); |
| 94 | |
| 95 | ret = start_inband_exchange(user, path, fd, fd, argc); |
| 96 | |
| 97 | return ret < 0? ret : client_run(fd, fd, -1, argc, argv); |
| 98 | } |
| 99 | |
| 100 | int start_inband_exchange(char *user, char *path, int f_in, int f_out, int argc) |
| 101 | { |
| 102 | int i; |
| 103 | char *sargs[MAX_ARGS]; |
| 104 | int sargc = 0; |
| 105 | char line[MAXPATHLEN]; |
| 106 | char *p; |
| 107 | |
| 108 | if (argc == 0 && !am_sender) |
| 109 | list_only = 1; |
| 110 | |
| 111 | if (*path == '/') { |
| 112 | rprintf(FERROR, "ERROR: The remote path must start with a module name\n"); |
| 113 | return -1; |
| 114 | } |
| 115 | |
| 116 | if (!user) user = getenv("USER"); |
| 117 | if (!user) user = getenv("LOGNAME"); |
| 118 | |
| 119 | /* set daemon_over_rsh to false since we need to build the |
| 120 | * true set of args passed through the rsh/ssh connection; |
| 121 | * this is a no-op for direct-socket-connection mode */ |
| 122 | daemon_over_rsh = 0; |
| 123 | server_options(sargs, &sargc); |
| 124 | |
| 125 | sargs[sargc++] = "."; |
| 126 | |
| 127 | if (path && *path) |
| 128 | sargs[sargc++] = path; |
| 129 | |
| 130 | sargs[sargc] = NULL; |
| 131 | |
| 132 | io_printf(f_out, "@RSYNCD: %d\n", protocol_version); |
| 133 | |
| 134 | if (!read_line(f_in, line, sizeof(line)-1)) { |
| 135 | rprintf(FERROR, "rsync: did not see server greeting\n"); |
| 136 | return -1; |
| 137 | } |
| 138 | |
| 139 | if (sscanf(line,"@RSYNCD: %d", &remote_protocol) != 1) { |
| 140 | /* note that read_line strips of \n or \r */ |
| 141 | rprintf(FERROR, "rsync: server sent \"%s\" rather than greeting\n", |
| 142 | line); |
| 143 | return -1; |
| 144 | } |
| 145 | if (protocol_version > remote_protocol) |
| 146 | protocol_version = remote_protocol; |
| 147 | |
| 148 | p = strchr(path,'/'); |
| 149 | if (p) *p = 0; |
| 150 | io_printf(f_out, "%s\n", path); |
| 151 | if (p) *p = '/'; |
| 152 | |
| 153 | /* Old servers may just drop the connection here, |
| 154 | rather than sending a proper EXIT command. Yuck. */ |
| 155 | kludge_around_eof = list_only && (protocol_version < 25); |
| 156 | |
| 157 | while (1) { |
| 158 | if (!read_line(f_in, line, sizeof(line)-1)) { |
| 159 | rprintf(FERROR, "rsync: didn't get server startup line\n"); |
| 160 | return -1; |
| 161 | } |
| 162 | |
| 163 | if (strncmp(line,"@RSYNCD: AUTHREQD ",18) == 0) { |
| 164 | auth_client(f_out, user, line+18); |
| 165 | continue; |
| 166 | } |
| 167 | |
| 168 | if (strcmp(line,"@RSYNCD: OK") == 0) break; |
| 169 | |
| 170 | if (strcmp(line,"@RSYNCD: EXIT") == 0) { |
| 171 | /* This is sent by recent versions of the |
| 172 | * server to terminate the listing of modules. |
| 173 | * We don't want to go on and transfer |
| 174 | * anything; just exit. */ |
| 175 | exit(0); |
| 176 | } |
| 177 | |
| 178 | if (strncmp(line, "@ERROR", 6) == 0) { |
| 179 | rprintf(FERROR,"%s\n", line); |
| 180 | /* This is always fatal; the server will now |
| 181 | * close the socket. */ |
| 182 | return RERR_STARTCLIENT; |
| 183 | } else { |
| 184 | rprintf(FINFO,"%s\n", line); |
| 185 | } |
| 186 | } |
| 187 | kludge_around_eof = False; |
| 188 | |
| 189 | for (i = 0; i < sargc; i++) { |
| 190 | io_printf(f_out, "%s\n", sargs[i]); |
| 191 | } |
| 192 | io_printf(f_out, "\n"); |
| 193 | |
| 194 | if (protocol_version < 23) { |
| 195 | if (protocol_version == 22 || !am_sender) |
| 196 | io_start_multiplex_in(f_in); |
| 197 | } |
| 198 | |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | |
| 203 | |
| 204 | static int rsync_module(int f_in, int f_out, int i) |
| 205 | { |
| 206 | int argc=0; |
| 207 | char *argv[MAX_ARGS]; |
| 208 | char **argp; |
| 209 | char line[MAXPATHLEN]; |
| 210 | uid_t uid = (uid_t)-2; /* canonically "nobody" */ |
| 211 | gid_t gid = (gid_t)-2; |
| 212 | char *p; |
| 213 | char *addr = client_addr(f_in); |
| 214 | char *host = client_name(f_in); |
| 215 | char *name = lp_name(i); |
| 216 | int use_chroot = lp_use_chroot(i); |
| 217 | int start_glob=0; |
| 218 | int ret; |
| 219 | char *request=NULL; |
| 220 | |
| 221 | if (!allow_access(addr, host, lp_hosts_allow(i), lp_hosts_deny(i))) { |
| 222 | rprintf(FERROR,"rsync denied on module %s from %s (%s)\n", |
| 223 | name, host, addr); |
| 224 | io_printf(f_out, "@ERROR: access denied to %s from %s (%s)\n", |
| 225 | name, host, addr); |
| 226 | return -1; |
| 227 | } |
| 228 | |
| 229 | if (am_daemon && am_server) { |
| 230 | rprintf(FINFO, "rsync allowed access on module %s from %s (%s)\n", |
| 231 | name, host, addr); |
| 232 | } |
| 233 | |
| 234 | if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) { |
| 235 | if (errno) { |
| 236 | rprintf(FERROR,"failed to open lock file %s : %s\n", |
| 237 | lp_lock_file(i), strerror(errno)); |
| 238 | io_printf(f_out, "@ERROR: failed to open lock file %s : %s\n", |
| 239 | lp_lock_file(i), strerror(errno)); |
| 240 | } else { |
| 241 | rprintf(FERROR,"max connections (%d) reached\n", |
| 242 | lp_max_connections(i)); |
| 243 | io_printf(f_out, "@ERROR: max connections (%d) reached - try again later\n", |
| 244 | lp_max_connections(i)); |
| 245 | } |
| 246 | return -1; |
| 247 | } |
| 248 | |
| 249 | |
| 250 | auth_user = auth_server(f_in, f_out, i, addr, "@RSYNCD: AUTHREQD "); |
| 251 | |
| 252 | if (!auth_user) { |
| 253 | rprintf(FERROR,"auth failed on module %s from %s (%s)\n", |
| 254 | name, host, addr); |
| 255 | io_printf(f_out, "@ERROR: auth failed on module %s\n", name); |
| 256 | return -1; |
| 257 | } |
| 258 | |
| 259 | module_id = i; |
| 260 | |
| 261 | am_root = (MY_UID() == 0); |
| 262 | |
| 263 | if (am_root) { |
| 264 | p = lp_uid(i); |
| 265 | if (!name_to_uid(p, &uid)) { |
| 266 | if (!isdigit(* (unsigned char *) p)) { |
| 267 | rprintf(FERROR,"Invalid uid %s\n", p); |
| 268 | io_printf(f_out, "@ERROR: invalid uid %s\n", p); |
| 269 | return -1; |
| 270 | } |
| 271 | uid = atoi(p); |
| 272 | } |
| 273 | |
| 274 | p = lp_gid(i); |
| 275 | if (!name_to_gid(p, &gid)) { |
| 276 | if (!isdigit(* (unsigned char *) p)) { |
| 277 | rprintf(FERROR,"Invalid gid %s\n", p); |
| 278 | io_printf(f_out, "@ERROR: invalid gid %s\n", p); |
| 279 | return -1; |
| 280 | } |
| 281 | gid = atoi(p); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | /* TODO: If we're not root, but the configuration requests |
| 286 | * that we change to some uid other than the current one, then |
| 287 | * log a warning. */ |
| 288 | |
| 289 | /* TODO: Perhaps take a list of gids, and make them into the |
| 290 | * supplementary groups. */ |
| 291 | |
| 292 | exclude_path_prefix = use_chroot? "" : lp_path(i); |
| 293 | if (*exclude_path_prefix == '/' && !exclude_path_prefix[1]) |
| 294 | exclude_path_prefix = ""; |
| 295 | |
| 296 | p = lp_include_from(i); |
| 297 | add_exclude_file(&server_exclude_list, p, |
| 298 | XFLG_FATAL_ERRORS | XFLG_DEF_INCLUDE); |
| 299 | |
| 300 | p = lp_include(i); |
| 301 | add_exclude(&server_exclude_list, p, |
| 302 | XFLG_WORD_SPLIT | XFLG_DEF_INCLUDE); |
| 303 | |
| 304 | p = lp_exclude_from(i); |
| 305 | add_exclude_file(&server_exclude_list, p, |
| 306 | XFLG_FATAL_ERRORS); |
| 307 | |
| 308 | p = lp_exclude(i); |
| 309 | add_exclude(&server_exclude_list, p, XFLG_WORD_SPLIT); |
| 310 | |
| 311 | exclude_path_prefix = NULL; |
| 312 | |
| 313 | log_init(); |
| 314 | |
| 315 | if (use_chroot) { |
| 316 | /* |
| 317 | * XXX: The 'use chroot' flag is a fairly reliable |
| 318 | * source of confusion, because it fails under two |
| 319 | * important circumstances: running as non-root, |
| 320 | * running on Win32 (or possibly others). On the |
| 321 | * other hand, if you are running as root, then it |
| 322 | * might be better to always use chroot. |
| 323 | * |
| 324 | * So, perhaps if we can't chroot we should just issue |
| 325 | * a warning, unless a "require chroot" flag is set, |
| 326 | * in which case we fail. |
| 327 | */ |
| 328 | if (chroot(lp_path(i))) { |
| 329 | rsyserr(FERROR, errno, "chroot %s failed", lp_path(i)); |
| 330 | io_printf(f_out, "@ERROR: chroot failed\n"); |
| 331 | return -1; |
| 332 | } |
| 333 | |
| 334 | if (!push_dir("/")) { |
| 335 | rsyserr(FERROR, errno, "chdir %s failed\n", lp_path(i)); |
| 336 | io_printf(f_out, "@ERROR: chdir failed\n"); |
| 337 | return -1; |
| 338 | } |
| 339 | |
| 340 | } else { |
| 341 | if (!push_dir(lp_path(i))) { |
| 342 | rsyserr(FERROR, errno, "chdir %s failed\n", lp_path(i)); |
| 343 | io_printf(f_out, "@ERROR: chdir failed\n"); |
| 344 | return -1; |
| 345 | } |
| 346 | sanitize_paths = 1; |
| 347 | } |
| 348 | |
| 349 | if (am_root) { |
| 350 | /* XXXX: You could argue that if the daemon is started |
| 351 | * by a non-root user and they explicitly specify a |
| 352 | * gid, then we should try to change to that gid -- |
| 353 | * this could be possible if it's already in their |
| 354 | * supplementary groups. */ |
| 355 | |
| 356 | /* TODO: Perhaps we need to document that if rsyncd is |
| 357 | * started by somebody other than root it will inherit |
| 358 | * all their supplementary groups. */ |
| 359 | |
| 360 | if (setgid(gid)) { |
| 361 | rsyserr(FERROR, errno, "setgid %d failed", (int) gid); |
| 362 | io_printf(f_out, "@ERROR: setgid failed\n"); |
| 363 | return -1; |
| 364 | } |
| 365 | #ifdef HAVE_SETGROUPS |
| 366 | /* Get rid of any supplementary groups this process |
| 367 | * might have inheristed. */ |
| 368 | if (setgroups(1, &gid)) { |
| 369 | rsyserr(FERROR, errno, "setgroups failed"); |
| 370 | io_printf(f_out, "@ERROR: setgroups failed\n"); |
| 371 | return -1; |
| 372 | } |
| 373 | #endif |
| 374 | |
| 375 | if (setuid(uid)) { |
| 376 | rsyserr(FERROR, errno, "setuid %d failed", (int) uid); |
| 377 | io_printf(f_out, "@ERROR: setuid failed\n"); |
| 378 | return -1; |
| 379 | } |
| 380 | |
| 381 | am_root = (MY_UID() == 0); |
| 382 | } |
| 383 | |
| 384 | io_printf(f_out, "@RSYNCD: OK\n"); |
| 385 | |
| 386 | argv[argc++] = "rsyncd"; |
| 387 | |
| 388 | while (1) { |
| 389 | if (!read_line(f_in, line, sizeof(line)-1)) { |
| 390 | return -1; |
| 391 | } |
| 392 | |
| 393 | if (!*line) break; |
| 394 | |
| 395 | p = line; |
| 396 | |
| 397 | argv[argc] = strdup(p); |
| 398 | if (!argv[argc]) { |
| 399 | return -1; |
| 400 | } |
| 401 | |
| 402 | if (start_glob) { |
| 403 | if (start_glob == 1) { |
| 404 | request = strdup(p); |
| 405 | start_glob++; |
| 406 | } |
| 407 | glob_expand(name, argv, &argc, MAX_ARGS); |
| 408 | } else { |
| 409 | argc++; |
| 410 | } |
| 411 | |
| 412 | if (strcmp(line,".") == 0) { |
| 413 | start_glob = 1; |
| 414 | } |
| 415 | |
| 416 | if (argc == MAX_ARGS) { |
| 417 | return -1; |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | argp = argv; |
| 422 | ret = parse_arguments(&argc, (const char ***) &argp, 0); |
| 423 | |
| 424 | if (filesfrom_fd == 0) |
| 425 | filesfrom_fd = f_in; |
| 426 | |
| 427 | if (request) { |
| 428 | if (*auth_user) { |
| 429 | rprintf(FINFO,"rsync %s %s from %s@%s (%s)\n", |
| 430 | am_sender?"on":"to", |
| 431 | request, auth_user, host, addr); |
| 432 | } else { |
| 433 | rprintf(FINFO,"rsync %s %s from %s (%s)\n", |
| 434 | am_sender?"on":"to", |
| 435 | request, host, addr); |
| 436 | } |
| 437 | free(request); |
| 438 | } |
| 439 | |
| 440 | #ifndef DEBUG |
| 441 | /* don't allow the logs to be flooded too fast */ |
| 442 | if (verbose > lp_max_verbosity()) |
| 443 | verbose = lp_max_verbosity(); |
| 444 | #endif |
| 445 | |
| 446 | if (protocol_version < 23) { |
| 447 | if (protocol_version == 22 || am_sender) |
| 448 | io_start_multiplex_out(f_out); |
| 449 | } |
| 450 | |
| 451 | /* For later protocol versions, we don't start multiplexing |
| 452 | * until we've configured nonblocking in start_server. That |
| 453 | * means we're in a sticky situation now: there's no way to |
| 454 | * convey errors to the client. */ |
| 455 | |
| 456 | /* FIXME: Hold off on reporting option processing errors until |
| 457 | * we've set up nonblocking and multiplexed IO and can get the |
| 458 | * message back to them. */ |
| 459 | if (!ret) { |
| 460 | option_error(); |
| 461 | exit_cleanup(RERR_UNSUPPORTED); |
| 462 | } |
| 463 | |
| 464 | if (lp_timeout(i)) { |
| 465 | io_timeout = lp_timeout(i); |
| 466 | } |
| 467 | |
| 468 | start_server(f_in, f_out, argc, argp); |
| 469 | |
| 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | /* send a list of available modules to the client. Don't list those |
| 474 | with "list = False". */ |
| 475 | static void send_listing(int fd) |
| 476 | { |
| 477 | int n = lp_numservices(); |
| 478 | int i; |
| 479 | |
| 480 | for (i=0;i<n;i++) |
| 481 | if (lp_list(i)) |
| 482 | io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i)); |
| 483 | |
| 484 | if (protocol_version >= 25) |
| 485 | io_printf(fd,"@RSYNCD: EXIT\n"); |
| 486 | } |
| 487 | |
| 488 | /* this is called when a connection is established to a client |
| 489 | and we want to start talking. The setup of the system is done from |
| 490 | here */ |
| 491 | int start_daemon(int f_in, int f_out) |
| 492 | { |
| 493 | char line[200]; |
| 494 | char *motd; |
| 495 | int i = -1; |
| 496 | |
| 497 | if (!lp_load(config_file, 0)) { |
| 498 | exit_cleanup(RERR_SYNTAX); |
| 499 | } |
| 500 | |
| 501 | log_init(); |
| 502 | |
| 503 | if (!am_server) { |
| 504 | set_socket_options(f_in, "SO_KEEPALIVE"); |
| 505 | set_socket_options(f_in, lp_socket_options()); |
| 506 | set_nonblocking(f_in); |
| 507 | } |
| 508 | |
| 509 | io_printf(f_out, "@RSYNCD: %d\n", protocol_version); |
| 510 | |
| 511 | motd = lp_motd_file(); |
| 512 | if (motd && *motd) { |
| 513 | FILE *f = fopen(motd,"r"); |
| 514 | while (f && !feof(f)) { |
| 515 | int len = fread(line, 1, sizeof(line)-1, f); |
| 516 | if (len > 0) { |
| 517 | line[len] = 0; |
| 518 | io_printf(f_out, "%s", line); |
| 519 | } |
| 520 | } |
| 521 | if (f) fclose(f); |
| 522 | io_printf(f_out, "\n"); |
| 523 | } |
| 524 | |
| 525 | if (!read_line(f_in, line, sizeof(line)-1)) { |
| 526 | return -1; |
| 527 | } |
| 528 | |
| 529 | if (sscanf(line,"@RSYNCD: %d", &remote_protocol) != 1) { |
| 530 | io_printf(f_out, "@ERROR: protocol startup error\n"); |
| 531 | return -1; |
| 532 | } |
| 533 | if (protocol_version > remote_protocol) |
| 534 | protocol_version = remote_protocol; |
| 535 | |
| 536 | while (i == -1) { |
| 537 | line[0] = 0; |
| 538 | if (!read_line(f_in, line, sizeof(line)-1)) { |
| 539 | return -1; |
| 540 | } |
| 541 | |
| 542 | if (!*line || strcmp(line,"#list")==0) { |
| 543 | send_listing(f_out); |
| 544 | return -1; |
| 545 | } |
| 546 | |
| 547 | if (*line == '#') { |
| 548 | /* it's some sort of command that I don't understand */ |
| 549 | io_printf(f_out, "@ERROR: Unknown command '%s'\n", line); |
| 550 | return -1; |
| 551 | } |
| 552 | |
| 553 | i = lp_number(line); |
| 554 | if (i == -1) { |
| 555 | io_printf(f_out, "@ERROR: Unknown module '%s'\n", line); |
| 556 | return -1; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | return rsync_module(f_in, f_out, i); |
| 561 | } |
| 562 | |
| 563 | |
| 564 | int daemon_main(void) |
| 565 | { |
| 566 | char *pid_file; |
| 567 | |
| 568 | if (is_a_socket(STDIN_FILENO)) { |
| 569 | int i; |
| 570 | |
| 571 | /* we are running via inetd - close off stdout and |
| 572 | * stderr so that library functions (and getopt) don't |
| 573 | * try to use them. Redirect them to /dev/null */ |
| 574 | for (i=1;i<3;i++) { |
| 575 | close(i); |
| 576 | open("/dev/null", O_RDWR); |
| 577 | } |
| 578 | |
| 579 | return start_daemon(STDIN_FILENO, STDIN_FILENO); |
| 580 | } |
| 581 | |
| 582 | if (!no_detach) |
| 583 | become_daemon(); |
| 584 | |
| 585 | if (!lp_load(config_file, 1)) { |
| 586 | exit_cleanup(RERR_SYNTAX); |
| 587 | } |
| 588 | |
| 589 | log_init(); |
| 590 | |
| 591 | rprintf(FINFO, "rsyncd version %s starting, listening on port %d\n", |
| 592 | RSYNC_VERSION, rsync_port); |
| 593 | /* TODO: If listening on a particular address, then show that |
| 594 | * address too. In fact, why not just do inet_ntop on the |
| 595 | * local address??? */ |
| 596 | |
| 597 | if (((pid_file = lp_pid_file()) != NULL) && (*pid_file != '\0')) { |
| 598 | char pidbuf[16]; |
| 599 | int fd; |
| 600 | pid_t pid = getpid(); |
| 601 | cleanup_set_pid(pid); |
| 602 | if ((fd = do_open(lp_pid_file(), O_WRONLY|O_CREAT|O_TRUNC, |
| 603 | 0666 & ~orig_umask)) == -1) { |
| 604 | cleanup_set_pid(0); |
| 605 | rsyserr(FLOG, errno, "failed to create pid file %s", pid_file); |
| 606 | exit_cleanup(RERR_FILEIO); |
| 607 | } |
| 608 | snprintf(pidbuf, sizeof pidbuf, "%ld\n", (long)pid); |
| 609 | write(fd, pidbuf, strlen(pidbuf)); |
| 610 | close(fd); |
| 611 | } |
| 612 | |
| 613 | start_accept_loop(rsync_port, start_daemon); |
| 614 | return -1; |
| 615 | } |