1 /*- 2 * ------+---------+---------+-------- + --------+---------+---------+---------* 3 * This file includes significant modifications done by: 4 * Copyright (c) 2003, 2004 - Garance Alistair Drosehn <gad@FreeBSD.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * ------+---------+---------+-------- + --------+---------+---------+---------* 29 */ 30 31 /* 32 * This file contains changes from the Open Software Foundation. 33 */ 34 35 /* 36 * Copyright 1988, 1989 by the Massachusetts Institute of Technology 37 * 38 * Permission to use, copy, modify, and distribute this software and its 39 * documentation for any purpose and without fee is hereby granted, provided 40 * that the above copyright notice appear in all copies and that both that 41 * copyright notice and this permission notice appear in supporting 42 * documentation, and that the names of M.I.T. and the M.I.T. S.I.P.B. not be 43 * used in advertising or publicity pertaining to distribution of the 44 * software without specific, written prior permission. M.I.T. and the M.I.T. 45 * S.I.P.B. make no representations about the suitability of this software 46 * for any purpose. It is provided "as is" without express or implied 47 * warranty. 48 * 49 * $FreeBSD: head/usr.sbin/newsyslog/newsyslog.c 327451 2017-12-31 22:01:36Z eadler $ 50 */ 51 52 /* 53 * newsyslog - roll over selected logs at the appropriate time, keeping the a 54 * specified number of backup files around. 55 */ 56 57 #define OSF 58 59 #include <sys/param.h> 60 #include <sys/queue.h> 61 #include <sys/stat.h> 62 #include <sys/user.h> 63 #include <sys/wait.h> 64 65 #include <assert.h> 66 #include <ctype.h> 67 #include <err.h> 68 #include <errno.h> 69 #include <dirent.h> 70 #include <fcntl.h> 71 #include <fnmatch.h> 72 #include <glob.h> 73 #include <grp.h> 74 #include <paths.h> 75 #include <pwd.h> 76 #include <signal.h> 77 #include <stdio.h> 78 #include <libgen.h> 79 #include <stdlib.h> 80 #include <string.h> 81 #include <syslog.h> 82 #include <time.h> 83 #include <unistd.h> 84 85 #include "pathnames.h" 86 #include "extern.h" 87 88 /* 89 * Compression suffixes 90 */ 91 #ifndef COMPRESS_SUFFIX_GZ 92 #define COMPRESS_SUFFIX_GZ ".gz" 93 #endif 94 95 #ifndef COMPRESS_SUFFIX_BZ2 96 #define COMPRESS_SUFFIX_BZ2 ".bz2" 97 #endif 98 99 #ifndef COMPRESS_SUFFIX_XZ 100 #define COMPRESS_SUFFIX_XZ ".xz" 101 #endif 102 103 #ifndef COMPRESS_SUFFIX_ZST 104 #define COMPRESS_SUFFIX_ZST ".zst" 105 #endif 106 107 #define COMPRESS_SUFFIX_MAXLEN MAX(MAX(sizeof(COMPRESS_SUFFIX_GZ),sizeof(COMPRESS_SUFFIX_BZ2)),sizeof(COMPRESS_SUFFIX_XZ)) 108 109 /* 110 * Compression types 111 */ 112 #define COMPRESS_TYPES 5 /* Number of supported compression types */ 113 114 #define COMPRESS_NONE 0 115 #define COMPRESS_GZIP 1 116 #define COMPRESS_BZIP2 2 117 #define COMPRESS_XZ 3 118 #define COMPRESS_ZSTD 4 119 120 /* 121 * Bit-values for the 'flags' parsed from a config-file entry. 122 */ 123 #define CE_BINARY 0x0008 /* Logfile is in binary, do not add status */ 124 /* messages to logfile(s) when rotating. */ 125 #define CE_NOSIGNAL 0x0010 /* There is no process to signal when */ 126 /* trimming this file. */ 127 #define CE_TRIMAT 0x0020 /* trim file at a specific time. */ 128 #define CE_GLOB 0x0040 /* name of the log is file name pattern. */ 129 #define CE_SIGNALGROUP 0x0080 /* Signal a process-group instead of a single */ 130 /* process when trimming this file. */ 131 #define CE_CREATE 0x0100 /* Create the log file if it does not exist. */ 132 #define CE_NODUMP 0x0200 /* Set 'nodump' on newly created log file. */ 133 #define CE_PID2CMD 0x0400 /* Replace PID file with a shell command.*/ 134 #define CE_PLAIN0 0x0800 /* Do not compress zero'th history file */ 135 136 #define CE_RFC5424 0x0800 /* Use RFC5424 format rotation message */ 137 138 #define MIN_PID 5 /* Don't touch pids lower than this */ 139 #define MAX_PID PID_MAX /* was lower, see /usr/include/sys/proc.h */ 140 141 #define kbytes(size) (((size) + 1023) >> 10) 142 143 #define DEFAULT_MARKER "<default>" 144 #define DEBUG_MARKER "<debug>" 145 #define INCLUDE_MARKER "<include>" 146 #define DEFAULT_TIMEFNAME_FMT "%Y%m%dT%H%M%S" 147 148 #define MAX_OLDLOGS 65536 /* Default maximum number of old logfiles */ 149 150 struct compress_types { 151 const char *flag; /* Flag in configuration file */ 152 const char *suffix; /* Compression suffix */ 153 const char *path; /* Path to compression program */ 154 char **args; /* Compression program arguments */ 155 }; 156 157 static char f_arg[] = "-f"; 158 static char q_arg[] = "-q"; 159 static char rm_arg[] = "--rm"; 160 static char *gz_args[] ={ NULL, f_arg, NULL, NULL }; 161 #define bzip2_args gz_args 162 #define xz_args gz_args 163 static char *zstd_args[] = { NULL, q_arg, rm_arg, NULL, NULL }; 164 165 #define ARGS_NUM 4 166 static const struct compress_types compress_type[COMPRESS_TYPES] = { 167 { "", "", "", NULL}, /* none */ 168 { "Z", COMPRESS_SUFFIX_GZ, _PATH_GZIP, gz_args}, /* gzip */ 169 { "J", COMPRESS_SUFFIX_BZ2, _PATH_BZIP2, bzip2_args}, /* bzip2 */ 170 { "X", COMPRESS_SUFFIX_XZ, _PATH_XZ, xz_args }, /* xz */ 171 { "Y", COMPRESS_SUFFIX_ZST, _PATH_ZSTD, zstd_args } /* zst */ 172 }; 173 174 struct conf_entry { 175 STAILQ_ENTRY(conf_entry) cf_nextp; 176 char *log; /* Name of the log */ 177 char *pid_cmd_file; /* PID or command file */ 178 char *r_reason; /* The reason this file is being rotated */ 179 int firstcreate; /* Creating log for the first time (-C). */ 180 int rotate; /* Non-zero if this file should be rotated */ 181 int fsize; /* size found for the log file */ 182 uid_t uid; /* Owner of log */ 183 gid_t gid; /* Group of log */ 184 int numlogs; /* Number of logs to keep */ 185 int trsize; /* Size cutoff to trigger trimming the log */ 186 int hours; /* Hours between log trimming */ 187 struct ptime_data *trim_at; /* Specific time to do trimming */ 188 unsigned int permissions; /* File permissions on the log */ 189 int flags; /* CE_BINARY */ 190 int compress; /* Compression */ 191 int sig; /* Signal to send */ 192 int def_cfg; /* Using the <default> rule for this file */ 193 }; 194 195 struct sigwork_entry { 196 SLIST_ENTRY(sigwork_entry) sw_nextp; 197 int sw_signum; /* the signal to send */ 198 int sw_pidok; /* true if pid value is valid */ 199 pid_t sw_pid; /* the process id from the PID file */ 200 const char *sw_pidtype; /* "daemon" or "process group" */ 201 int sw_runcmd; /* run command or send PID to signal */ 202 char sw_fname[1]; /* file the PID was read from or shell cmd */ 203 }; 204 205 struct zipwork_entry { 206 SLIST_ENTRY(zipwork_entry) zw_nextp; 207 const struct conf_entry *zw_conf; /* for chown/perm/flag info */ 208 const struct sigwork_entry *zw_swork; /* to know success of signal */ 209 int zw_fsize; /* size of the file to compress */ 210 char zw_fname[1]; /* the file to compress */ 211 }; 212 213 struct include_entry { 214 STAILQ_ENTRY(include_entry) inc_nextp; 215 const char *file; /* Name of file to process */ 216 }; 217 218 struct oldlog_entry { 219 char *fname; /* Filename of the log file */ 220 time_t t; /* Parsed timestamp of the logfile */ 221 }; 222 223 typedef enum { 224 FREE_ENT, KEEP_ENT 225 } fk_entry; 226 227 STAILQ_HEAD(cflist, conf_entry); 228 static SLIST_HEAD(swlisthead, sigwork_entry) swhead = 229 SLIST_HEAD_INITIALIZER(swhead); 230 static SLIST_HEAD(zwlisthead, zipwork_entry) zwhead = 231 SLIST_HEAD_INITIALIZER(zwhead); 232 STAILQ_HEAD(ilist, include_entry); 233 234 int dbg_at_times; /* -D Show details of 'trim_at' code */ 235 236 static int archtodir = 0; /* Archive old logfiles to other directory */ 237 static int createlogs; /* Create (non-GLOB) logfiles which do not */ 238 /* already exist. 1=='for entries with */ 239 /* C flag', 2=='for all entries'. */ 240 int verbose = 0; /* Print out what's going on */ 241 static int needroot = 1; /* Root privs are necessary */ 242 int noaction = 0; /* Don't do anything, just show it */ 243 static int norotate = 0; /* Don't rotate */ 244 static int nosignal; /* Do not send any signals */ 245 static int enforcepid = 0; /* If PID file does not exist or empty, do nothing */ 246 static int force = 0; /* Force the trim no matter what */ 247 static int rotatereq = 0; /* -R = Always rotate the file(s) as given */ 248 /* on the command (this also requires */ 249 /* that a list of files *are* given on */ 250 /* the run command). */ 251 static char *requestor; /* The name given on a -R request */ 252 static char *timefnamefmt = NULL; /* Use time based filenames instead of .0 */ 253 static char *archdirname; /* Directory path to old logfiles archive */ 254 static char *destdir = NULL; /* Directory to treat at root for logs */ 255 static const char *conf; /* Configuration file to use */ 256 257 struct ptime_data *dbg_timenow; /* A "timenow" value set via -D option */ 258 static struct ptime_data *timenow; /* The time to use for checking at-fields */ 259 260 #define DAYTIME_LEN 16 261 static char daytime[DAYTIME_LEN]; /* The current time in human readable form, 262 * used for rotation-tracking messages. */ 263 264 /* Another buffer to hold the current time in RFC5424 format. Fractional 265 * seconds are allowed by the RFC, but are not included in the 266 * rotation-tracking messages written by newsyslog and so are not accounted for 267 * in the length below. 268 */ 269 #define DAYTIME_RFC5424_LEN sizeof("YYYY-MM-DDTHH:MM:SS+00:00") 270 static char daytime_rfc5424[DAYTIME_RFC5424_LEN]; 271 272 static char hostname[MAXHOSTNAMELEN]; /* hostname */ 273 274 static const char *path_syslogpid = _PATH_SYSLOGPID; 275 276 static struct cflist *get_worklist(char **files); 277 static void parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p, 278 struct conf_entry *defconf_p, struct ilist *inclist); 279 static void add_to_queue(const char *fname, struct ilist *inclist); 280 static char *sob(char *p); 281 static char *son(char *p); 282 static int isnumberstr(const char *); 283 static int isglobstr(const char *); 284 static char *missing_field(char *p, char *errline); 285 static void change_attrs(const char *, const struct conf_entry *); 286 static const char *get_logfile_suffix(const char *logfile); 287 static fk_entry do_entry(struct conf_entry *); 288 static fk_entry do_rotate(const struct conf_entry *); 289 static void do_sigwork(struct sigwork_entry *); 290 static void do_zipwork(struct zipwork_entry *); 291 static struct sigwork_entry * 292 save_sigwork(const struct conf_entry *); 293 static struct zipwork_entry * 294 save_zipwork(const struct conf_entry *, const struct 295 sigwork_entry *, int, const char *); 296 static void set_swpid(struct sigwork_entry *, const struct conf_entry *); 297 static int sizefile(const char *); 298 static void expand_globs(struct cflist *work_p, struct cflist *glob_p); 299 static void free_clist(struct cflist *list); 300 static void free_entry(struct conf_entry *ent); 301 static struct conf_entry *init_entry(const char *fname, 302 struct conf_entry *src_entry); 303 static void parse_args(int argc, char **argv); 304 static int parse_doption(const char *doption); 305 static void usage(void) __dead2; 306 static int log_trim(const char *logname, const struct conf_entry *log_ent); 307 static int age_old_log(const char *file); 308 static void savelog(char *from, char *to); 309 static void createdir(const struct conf_entry *ent, char *dirpart); 310 static void createlog(const struct conf_entry *ent); 311 static int parse_signal(const char *str); 312 313 /* 314 * All the following take a parameter of 'int', but expect values in the 315 * range of unsigned char. Define wrappers which take values of type 'char', 316 * whether signed or unsigned, and ensure they end up in the right range. 317 */ 318 #define isdigitch(Anychar) isdigit((u_char)(Anychar)) 319 #define isprintch(Anychar) isprint((u_char)(Anychar)) 320 #define isspacech(Anychar) isspace((u_char)(Anychar)) 321 #define tolowerch(Anychar) tolower((u_char)(Anychar)) 322 323 int 324 main(int argc, char **argv) 325 { 326 struct cflist *worklist; 327 struct conf_entry *p; 328 struct sigwork_entry *stmp; 329 struct zipwork_entry *ztmp; 330 331 SLIST_INIT(&swhead); 332 SLIST_INIT(&zwhead); 333 334 parse_args(argc, argv); 335 argc -= optind; 336 argv += optind; 337 338 if (needroot && getuid() && geteuid()) 339 errx(1, "must have root privs"); 340 worklist = get_worklist(argv); 341 342 /* 343 * Rotate all the files which need to be rotated. Note that 344 * some users have *hundreds* of entries in newsyslog.conf! 345 */ 346 while (!STAILQ_EMPTY(worklist)) { 347 p = STAILQ_FIRST(worklist); 348 STAILQ_REMOVE_HEAD(worklist, cf_nextp); 349 if (do_entry(p) == FREE_ENT) 350 free_entry(p); 351 } 352 353 /* 354 * Send signals to any processes which need a signal to tell 355 * them to close and re-open the log file(s) we have rotated. 356 * Note that zipwork_entries include pointers to these 357 * sigwork_entry's, so we can not free the entries here. 358 */ 359 if (!SLIST_EMPTY(&swhead)) { 360 if (noaction || verbose) 361 printf("Signal all daemon process(es)...\n"); 362 SLIST_FOREACH(stmp, &swhead, sw_nextp) 363 do_sigwork(stmp); 364 if (!(rotatereq && nosignal)) { 365 if (noaction) 366 printf("\tsleep 10\n"); 367 else { 368 if (verbose) 369 printf("Pause 10 seconds to allow " 370 "daemon(s) to close log file(s)\n"); 371 sleep(10); 372 } 373 } 374 } 375 /* 376 * Compress all files that we're expected to compress, now 377 * that all processes should have closed the files which 378 * have been rotated. 379 */ 380 if (!SLIST_EMPTY(&zwhead)) { 381 if (noaction || verbose) 382 printf("Compress all rotated log file(s)...\n"); 383 while (!SLIST_EMPTY(&zwhead)) { 384 ztmp = SLIST_FIRST(&zwhead); 385 do_zipwork(ztmp); 386 SLIST_REMOVE_HEAD(&zwhead, zw_nextp); 387 free(ztmp); 388 } 389 } 390 /* Now free all the sigwork entries. */ 391 while (!SLIST_EMPTY(&swhead)) { 392 stmp = SLIST_FIRST(&swhead); 393 SLIST_REMOVE_HEAD(&swhead, sw_nextp); 394 free(stmp); 395 } 396 397 while (wait(NULL) > 0 || errno == EINTR) 398 ; 399 return (0); 400 } 401 402 static struct conf_entry * 403 init_entry(const char *fname, struct conf_entry *src_entry) 404 { 405 struct conf_entry *tempwork; 406 407 if (verbose > 4) 408 printf("\t--> [creating entry for %s]\n", fname); 409 410 tempwork = malloc(sizeof(struct conf_entry)); 411 if (tempwork == NULL) 412 err(1, "malloc of conf_entry for %s", fname); 413 414 if (destdir == NULL || fname[0] != '/') 415 tempwork->log = strdup(fname); 416 else 417 asprintf(&tempwork->log, "%s%s", destdir, fname); 418 if (tempwork->log == NULL) 419 err(1, "strdup for %s", fname); 420 421 if (src_entry != NULL) { 422 tempwork->pid_cmd_file = NULL; 423 if (src_entry->pid_cmd_file) 424 tempwork->pid_cmd_file = strdup(src_entry->pid_cmd_file); 425 tempwork->r_reason = NULL; 426 tempwork->firstcreate = 0; 427 tempwork->rotate = 0; 428 tempwork->fsize = -1; 429 tempwork->uid = src_entry->uid; 430 tempwork->gid = src_entry->gid; 431 tempwork->numlogs = src_entry->numlogs; 432 tempwork->trsize = src_entry->trsize; 433 tempwork->hours = src_entry->hours; 434 tempwork->trim_at = NULL; 435 if (src_entry->trim_at != NULL) 436 tempwork->trim_at = ptime_init(src_entry->trim_at); 437 tempwork->permissions = src_entry->permissions; 438 tempwork->flags = src_entry->flags; 439 tempwork->compress = src_entry->compress; 440 tempwork->sig = src_entry->sig; 441 tempwork->def_cfg = src_entry->def_cfg; 442 } else { 443 /* Initialize as a "do-nothing" entry */ 444 tempwork->pid_cmd_file = NULL; 445 tempwork->r_reason = NULL; 446 tempwork->firstcreate = 0; 447 tempwork->rotate = 0; 448 tempwork->fsize = -1; 449 tempwork->uid = (uid_t)-1; 450 tempwork->gid = (gid_t)-1; 451 tempwork->numlogs = 1; 452 tempwork->trsize = -1; 453 tempwork->hours = -1; 454 tempwork->trim_at = NULL; 455 tempwork->permissions = 0; 456 tempwork->flags = 0; 457 tempwork->compress = COMPRESS_NONE; 458 tempwork->sig = SIGHUP; 459 tempwork->def_cfg = 0; 460 } 461 462 return (tempwork); 463 } 464 465 static void 466 free_entry(struct conf_entry *ent) 467 { 468 469 if (ent == NULL) 470 return; 471 472 if (ent->log != NULL) { 473 if (verbose > 4) 474 printf("\t--> [freeing entry for %s]\n", ent->log); 475 free(ent->log); 476 ent->log = NULL; 477 } 478 479 if (ent->pid_cmd_file != NULL) { 480 free(ent->pid_cmd_file); 481 ent->pid_cmd_file = NULL; 482 } 483 484 if (ent->r_reason != NULL) { 485 free(ent->r_reason); 486 ent->r_reason = NULL; 487 } 488 489 if (ent->trim_at != NULL) { 490 ptime_free(ent->trim_at); 491 ent->trim_at = NULL; 492 } 493 494 free(ent); 495 } 496 497 static void 498 free_clist(struct cflist *list) 499 { 500 struct conf_entry *ent; 501 502 while (!STAILQ_EMPTY(list)) { 503 ent = STAILQ_FIRST(list); 504 STAILQ_REMOVE_HEAD(list, cf_nextp); 505 free_entry(ent); 506 } 507 508 free(list); 509 list = NULL; 510 } 511 512 static fk_entry 513 do_entry(struct conf_entry * ent) 514 { 515 #define REASON_MAX 80 516 int modtime; 517 fk_entry free_or_keep; 518 double diffsecs; 519 char temp_reason[REASON_MAX]; 520 int oversized; 521 522 free_or_keep = FREE_ENT; 523 if (verbose) 524 printf("%s <%d%s>: ", ent->log, ent->numlogs, 525 compress_type[ent->compress].flag); 526 ent->fsize = sizefile(ent->log); 527 oversized = ((ent->trsize > 0) && (ent->fsize >= ent->trsize)); 528 modtime = age_old_log(ent->log); 529 ent->rotate = 0; 530 ent->firstcreate = 0; 531 if (ent->fsize < 0) { 532 /* 533 * If either the C flag or the -C option was specified, 534 * and if we won't be creating the file, then have the 535 * verbose message include a hint as to why the file 536 * will not be created. 537 */ 538 temp_reason[0] = '\0'; 539 if (createlogs > 1) 540 ent->firstcreate = 1; 541 else if ((ent->flags & CE_CREATE) && createlogs) 542 ent->firstcreate = 1; 543 else if (ent->flags & CE_CREATE) 544 strlcpy(temp_reason, " (no -C option)", REASON_MAX); 545 else if (createlogs) 546 strlcpy(temp_reason, " (no C flag)", REASON_MAX); 547 548 if (ent->firstcreate) { 549 if (verbose) 550 printf("does not exist -> will create.\n"); 551 createlog(ent); 552 } else if (verbose) { 553 printf("does not exist, skipped%s.\n", temp_reason); 554 } 555 } else { 556 if (ent->flags & CE_TRIMAT && !force && !rotatereq && 557 !oversized) { 558 diffsecs = ptimeget_diff(timenow, ent->trim_at); 559 if (diffsecs < 0.0) { 560 /* trim_at is some time in the future. */ 561 if (verbose) { 562 ptime_adjust4dst(ent->trim_at, 563 timenow); 564 printf("--> will trim at %s", 565 ptimeget_ctime(ent->trim_at)); 566 } 567 return (free_or_keep); 568 } else if (diffsecs >= 3600.0) { 569 /* 570 * trim_at is more than an hour in the past, 571 * so find the next valid trim_at time, and 572 * tell the user what that will be. 573 */ 574 if (verbose && dbg_at_times) 575 printf("\n\t--> prev trim at %s\t", 576 ptimeget_ctime(ent->trim_at)); 577 if (verbose) { 578 ptimeset_nxtime(ent->trim_at); 579 printf("--> will trim at %s", 580 ptimeget_ctime(ent->trim_at)); 581 } 582 return (free_or_keep); 583 } else if (verbose && noaction && dbg_at_times) { 584 /* 585 * If we are just debugging at-times, then 586 * a detailed message is helpful. Also 587 * skip "doing" any commands, since they 588 * would all be turned off by no-action. 589 */ 590 printf("\n\t--> timematch at %s", 591 ptimeget_ctime(ent->trim_at)); 592 return (free_or_keep); 593 } else if (verbose && ent->hours <= 0) { 594 printf("--> time is up\n"); 595 } 596 } 597 if (verbose && (ent->trsize > 0)) 598 printf("size (Kb): %d [%d] ", ent->fsize, ent->trsize); 599 if (verbose && (ent->hours > 0)) 600 printf(" age (hr): %d [%d] ", modtime, ent->hours); 601 602 /* 603 * Figure out if this logfile needs to be rotated. 604 */ 605 temp_reason[0] = '\0'; 606 if (rotatereq) { 607 ent->rotate = 1; 608 snprintf(temp_reason, REASON_MAX, " due to -R from %s", 609 requestor); 610 } else if (force) { 611 ent->rotate = 1; 612 snprintf(temp_reason, REASON_MAX, " due to -F request"); 613 } else if (oversized) { 614 ent->rotate = 1; 615 snprintf(temp_reason, REASON_MAX, " due to size>%dK", 616 ent->trsize); 617 } else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) { 618 ent->rotate = 1; 619 } else if ((ent->hours > 0) && ((modtime >= ent->hours) || 620 (modtime < 0))) { 621 ent->rotate = 1; 622 } 623 624 /* 625 * If the file needs to be rotated, then rotate it. 626 */ 627 if (ent->rotate && !norotate) { 628 if (temp_reason[0] != '\0') 629 ent->r_reason = strdup(temp_reason); 630 if (verbose) 631 printf("--> trimming log....\n"); 632 if (noaction && !verbose) 633 printf("%s <%d%s>: trimming\n", ent->log, 634 ent->numlogs, 635 compress_type[ent->compress].flag); 636 free_or_keep = do_rotate(ent); 637 } else { 638 if (verbose) 639 printf("--> skipping\n"); 640 } 641 } 642 return (free_or_keep); 643 #undef REASON_MAX 644 } 645 646 static void 647 parse_args(int argc, char **argv) 648 { 649 int ch; 650 char *p; 651 652 timenow = ptime_init(NULL); 653 ptimeset_time(timenow, time(NULL)); 654 strlcpy(daytime, ptimeget_ctime(timenow) + 4, DAYTIME_LEN); 655 ptimeget_ctime_rfc5424(timenow, daytime_rfc5424, DAYTIME_RFC5424_LEN); 656 657 /* Let's get our hostname */ 658 gethostname(hostname, sizeof(hostname)); 659 660 /* Truncate domain */ 661 if ((p = strchr(hostname, '.')) != NULL) 662 *p = '\0'; 663 664 /* Parse command line options. */ 665 while ((ch = getopt(argc, argv, "a:d:f:nrst:vCD:FNPR:S:")) != -1) 666 switch (ch) { 667 case 'a': 668 archtodir++; 669 archdirname = optarg; 670 break; 671 case 'd': 672 destdir = optarg; 673 break; 674 case 'f': 675 conf = optarg; 676 break; 677 case 'n': 678 noaction++; 679 /* FALLTHROUGH */ 680 case 'r': 681 needroot = 0; 682 break; 683 case 's': 684 nosignal = 1; 685 break; 686 case 't': 687 if (optarg[0] == '\0' || 688 strcmp(optarg, "DEFAULT") == 0) 689 timefnamefmt = strdup(DEFAULT_TIMEFNAME_FMT); 690 else 691 timefnamefmt = strdup(optarg); 692 break; 693 case 'v': 694 verbose++; 695 break; 696 case 'C': 697 /* Useful for things like rc.diskless... */ 698 createlogs++; 699 break; 700 case 'D': 701 /* 702 * Set some debugging option. The specific option 703 * depends on the value of optarg. These options 704 * may come and go without notice or documentation. 705 */ 706 if (parse_doption(optarg)) 707 break; 708 usage(); 709 /* NOTREACHED */ 710 case 'F': 711 force++; 712 break; 713 case 'N': 714 norotate++; 715 break; 716 case 'P': 717 enforcepid++; 718 break; 719 case 'R': 720 rotatereq++; 721 requestor = strdup(optarg); 722 break; 723 case 'S': 724 path_syslogpid = optarg; 725 break; 726 case 'm': /* Used by OpenBSD for "monitor mode" */ 727 default: 728 usage(); 729 /* NOTREACHED */ 730 } 731 732 if (force && norotate) { 733 warnx("Only one of -F and -N may be specified."); 734 usage(); 735 /* NOTREACHED */ 736 } 737 738 if (rotatereq) { 739 if (optind == argc) { 740 warnx("At least one filename must be given when -R is specified."); 741 usage(); 742 /* NOTREACHED */ 743 } 744 /* Make sure "requestor" value is safe for a syslog message. */ 745 for (p = requestor; *p != '\0'; p++) { 746 if (!isprintch(*p) && (*p != '\t')) 747 *p = '.'; 748 } 749 } 750 751 if (dbg_timenow) { 752 /* 753 * Note that the 'daytime' variable is not changed. 754 * That is only used in messages that track when a 755 * logfile is rotated, and if a file *is* rotated, 756 * then it will still rotated at the "real now" time. 757 */ 758 ptime_free(timenow); 759 timenow = dbg_timenow; 760 fprintf(stderr, "Debug: Running as if TimeNow is %s", 761 ptimeget_ctime(dbg_timenow)); 762 } 763 764 } 765 766 /* 767 * These debugging options are mainly meant for developer use, such 768 * as writing regression-tests. They would not be needed by users 769 * during normal operation of newsyslog... 770 */ 771 static int 772 parse_doption(const char *doption) 773 { 774 const char TN[] = "TN="; 775 int res; 776 777 if (strncmp(doption, TN, sizeof(TN) - 1) == 0) { 778 /* 779 * The "TimeNow" debugging option. This might be off 780 * by an hour when crossing a timezone change. 781 */ 782 dbg_timenow = ptime_init(NULL); 783 res = ptime_relparse(dbg_timenow, PTM_PARSE_ISO8601, 784 time(NULL), doption + sizeof(TN) - 1); 785 if (res == -2) { 786 warnx("Non-existent time specified on -D %s", doption); 787 return (0); /* failure */ 788 } else if (res < 0) { 789 warnx("Malformed time given on -D %s", doption); 790 return (0); /* failure */ 791 } 792 return (1); /* successfully parsed */ 793 794 } 795 796 if (strcmp(doption, "ats") == 0) { 797 dbg_at_times++; 798 return (1); /* successfully parsed */ 799 } 800 801 /* XXX - This check could probably be dropped. */ 802 if ((strcmp(doption, "neworder") == 0) || (strcmp(doption, "oldorder") 803 == 0)) { 804 warnx("NOTE: newsyslog always uses 'neworder'."); 805 return (1); /* successfully parsed */ 806 } 807 808 warnx("Unknown -D (debug) option: '%s'", doption); 809 return (0); /* failure */ 810 } 811 812 static void 813 usage(void) 814 { 815 816 fprintf(stderr, 817 "usage: newsyslog [-CFNPnrsv] [-a directory] [-d directory] [-f config_file]\n" 818 " [-S pidfile] [-t timefmt] [[-R tagname] file ...]\n"); 819 exit(1); 820 } 821 822 /* 823 * Parse a configuration file and return a linked list of all the logs 824 * which should be processed. 825 */ 826 static struct cflist * 827 get_worklist(char **files) 828 { 829 FILE *f; 830 char **given; 831 struct cflist *cmdlist, *filelist, *globlist; 832 struct conf_entry *defconf, *dupent, *ent; 833 struct ilist inclist; 834 struct include_entry *inc; 835 int gmatch, fnres; 836 837 defconf = NULL; 838 STAILQ_INIT(&inclist); 839 840 filelist = malloc(sizeof(struct cflist)); 841 if (filelist == NULL) 842 err(1, "malloc of filelist"); 843 STAILQ_INIT(filelist); 844 globlist = malloc(sizeof(struct cflist)); 845 if (globlist == NULL) 846 err(1, "malloc of globlist"); 847 STAILQ_INIT(globlist); 848 849 inc = malloc(sizeof(struct include_entry)); 850 if (inc == NULL) 851 err(1, "malloc of inc"); 852 inc->file = conf; 853 if (inc->file == NULL) 854 inc->file = _PATH_CONF; 855 STAILQ_INSERT_TAIL(&inclist, inc, inc_nextp); 856 857 STAILQ_FOREACH(inc, &inclist, inc_nextp) { 858 if (strcmp(inc->file, "-") != 0) 859 f = fopen(inc->file, "r"); 860 else { 861 f = stdin; 862 inc->file = "<stdin>"; 863 } 864 if (!f) 865 err(1, "%s", inc->file); 866 867 if (verbose) 868 printf("Processing %s\n", inc->file); 869 parse_file(f, filelist, globlist, defconf, &inclist); 870 fclose(f); 871 } 872 873 /* 874 * All config-file information has been read in and turned into 875 * a filelist and a globlist. If there were no specific files 876 * given on the run command, then the only thing left to do is to 877 * call a routine which finds all files matched by the globlist 878 * and adds them to the filelist. Then return the worklist. 879 */ 880 if (*files == NULL) { 881 expand_globs(filelist, globlist); 882 free_clist(globlist); 883 if (defconf != NULL) 884 free_entry(defconf); 885 return (filelist); 886 /* NOTREACHED */ 887 } 888 889 /* 890 * If newsyslog was given a specific list of files to process, 891 * it may be that some of those files were not listed in any 892 * config file. Those unlisted files should get the default 893 * rotation action. First, create the default-rotation action 894 * if none was found in a system config file. 895 */ 896 if (defconf == NULL) { 897 defconf = init_entry(DEFAULT_MARKER, NULL); 898 defconf->numlogs = 3; 899 defconf->trsize = 50; 900 defconf->permissions = S_IRUSR|S_IWUSR; 901 } 902 903 /* 904 * If newsyslog was run with a list of specific filenames, 905 * then create a new worklist which has only those files in 906 * it, picking up the rotation-rules for those files from 907 * the original filelist. 908 * 909 * XXX - Note that this will copy multiple rules for a single 910 * logfile, if multiple entries are an exact match for 911 * that file. That matches the historic behavior, but do 912 * we want to continue to allow it? If so, it should 913 * probably be handled more intelligently. 914 */ 915 cmdlist = malloc(sizeof(struct cflist)); 916 if (cmdlist == NULL) 917 err(1, "malloc of cmdlist"); 918 STAILQ_INIT(cmdlist); 919 920 for (given = files; *given; ++given) { 921 /* 922 * First try to find exact-matches for this given file. 923 */ 924 gmatch = 0; 925 STAILQ_FOREACH(ent, filelist, cf_nextp) { 926 if (strcmp(ent->log, *given) == 0) { 927 gmatch++; 928 dupent = init_entry(*given, ent); 929 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp); 930 } 931 } 932 if (gmatch) { 933 if (verbose > 2) 934 printf("\t+ Matched entry %s\n", *given); 935 continue; 936 } 937 938 /* 939 * There was no exact-match for this given file, so look 940 * for a "glob" entry which does match. 941 */ 942 gmatch = 0; 943 if (verbose > 2 && globlist != NULL) 944 printf("\t+ Checking globs for %s\n", *given); 945 STAILQ_FOREACH(ent, globlist, cf_nextp) { 946 fnres = fnmatch(ent->log, *given, FNM_PATHNAME); 947 if (verbose > 2) 948 printf("\t+ = %d for pattern %s\n", fnres, 949 ent->log); 950 if (fnres == 0) { 951 gmatch++; 952 dupent = init_entry(*given, ent); 953 /* This new entry is not a glob! */ 954 dupent->flags &= ~CE_GLOB; 955 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp); 956 /* Only allow a match to one glob-entry */ 957 break; 958 } 959 } 960 if (gmatch) { 961 if (verbose > 2) 962 printf("\t+ Matched %s via %s\n", *given, 963 ent->log); 964 continue; 965 } 966 967 /* 968 * This given file was not found in any config file, so 969 * add a worklist item based on the default entry. 970 */ 971 if (verbose > 2) 972 printf("\t+ No entry matched %s (will use %s)\n", 973 *given, DEFAULT_MARKER); 974 dupent = init_entry(*given, defconf); 975 /* Mark that it was *not* found in a config file */ 976 dupent->def_cfg = 1; 977 STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp); 978 } 979 980 /* 981 * Free all the entries in the original work list, the list of 982 * glob entries, and the default entry. 983 */ 984 free_clist(filelist); 985 free_clist(globlist); 986 free_entry(defconf); 987 988 /* And finally, return a worklist which matches the given files. */ 989 return (cmdlist); 990 } 991 992 /* 993 * Expand the list of entries with filename patterns, and add all files 994 * which match those glob-entries onto the worklist. 995 */ 996 static void 997 expand_globs(struct cflist *work_p, struct cflist *glob_p) 998 { 999 int gmatch, gres; 1000 size_t i; 1001 char *mfname; 1002 struct conf_entry *dupent, *ent, *globent; 1003 glob_t pglob; 1004 struct stat st_fm; 1005 1006 /* 1007 * The worklist contains all fully-specified (non-GLOB) names. 1008 * 1009 * Now expand the list of filename-pattern (GLOB) entries into 1010 * a second list, which (by definition) will only match files 1011 * that already exist. Do not add a glob-related entry for any 1012 * file which already exists in the fully-specified list. 1013 */ 1014 STAILQ_FOREACH(globent, glob_p, cf_nextp) { 1015 gres = glob(globent->log, GLOB_NOCHECK, NULL, &pglob); 1016 if (gres != 0) { 1017 warn("cannot expand pattern (%d): %s", gres, 1018 globent->log); 1019 continue; 1020 } 1021 1022 if (verbose > 2) 1023 printf("\t+ Expanding pattern %s\n", globent->log); 1024 for (i = 0; i < pglob.gl_matchc; i++) { 1025 mfname = pglob.gl_pathv[i]; 1026 1027 /* See if this file already has a specific entry. */ 1028 gmatch = 0; 1029 STAILQ_FOREACH(ent, work_p, cf_nextp) { 1030 if (strcmp(mfname, ent->log) == 0) { 1031 gmatch++; 1032 break; 1033 } 1034 } 1035 if (gmatch) 1036 continue; 1037 1038 /* Make sure the named matched is a file. */ 1039 gres = lstat(mfname, &st_fm); 1040 if (gres != 0) { 1041 /* Error on a file that glob() matched?!? */ 1042 warn("Skipping %s - lstat() error", mfname); 1043 continue; 1044 } 1045 if (!S_ISREG(st_fm.st_mode)) { 1046 /* We only rotate files! */ 1047 if (verbose > 2) 1048 printf("\t+ . skipping %s (!file)\n", 1049 mfname); 1050 continue; 1051 } 1052 1053 if (verbose > 2) 1054 printf("\t+ . add file %s\n", mfname); 1055 dupent = init_entry(mfname, globent); 1056 /* This new entry is not a glob! */ 1057 dupent->flags &= ~CE_GLOB; 1058 1059 /* Add to the worklist. */ 1060 STAILQ_INSERT_TAIL(work_p, dupent, cf_nextp); 1061 } 1062 globfree(&pglob); 1063 if (verbose > 2) 1064 printf("\t+ Done with pattern %s\n", globent->log); 1065 } 1066 } 1067 1068 /* 1069 * Parse a configuration file and update a linked list of all the logs to 1070 * process. 1071 */ 1072 static void 1073 parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p, 1074 struct conf_entry *defconf_p, struct ilist *inclist) 1075 { 1076 char line[BUFSIZ], *parse, *q; 1077 char *cp, *errline, *group; 1078 struct conf_entry *working; 1079 struct passwd *pwd; 1080 struct group *grp; 1081 glob_t pglob; 1082 int eol, ptm_opts, res, special; 1083 size_t i; 1084 1085 errline = NULL; 1086 while (fgets(line, BUFSIZ, cf)) { 1087 if ((line[0] == '\n') || (line[0] == '#') || 1088 (strlen(line) == 0)) 1089 continue; 1090 if (errline != NULL) 1091 free(errline); 1092 errline = strdup(line); 1093 for (cp = line + 1; *cp != '\0'; cp++) { 1094 if (*cp != '#') 1095 continue; 1096 if (*(cp - 1) == '\\') { 1097 strcpy(cp - 1, cp); 1098 cp--; 1099 continue; 1100 } 1101 *cp = '\0'; 1102 break; 1103 } 1104 1105 q = parse = missing_field(sob(line), errline); 1106 parse = son(line); 1107 if (!*parse) 1108 errx(1, "malformed line (missing fields):\n%s", 1109 errline); 1110 *parse = '\0'; 1111 1112 /* 1113 * Allow people to set debug options via the config file. 1114 * (NOTE: debug options are undocumented, and may disappear 1115 * at any time, etc). 1116 */ 1117 if (strcasecmp(DEBUG_MARKER, q) == 0) { 1118 q = parse = missing_field(sob(parse + 1), errline); 1119 parse = son(parse); 1120 if (!*parse) 1121 warnx("debug line specifies no option:\n%s", 1122 errline); 1123 else { 1124 *parse = '\0'; 1125 parse_doption(q); 1126 } 1127 continue; 1128 } else if (strcasecmp(INCLUDE_MARKER, q) == 0) { 1129 if (verbose) 1130 printf("Found: %s", errline); 1131 q = parse = missing_field(sob(parse + 1), errline); 1132 parse = son(parse); 1133 if (!*parse) { 1134 warnx("include line missing argument:\n%s", 1135 errline); 1136 continue; 1137 } 1138 1139 *parse = '\0'; 1140 1141 if (isglobstr(q)) { 1142 res = glob(q, GLOB_NOCHECK, NULL, &pglob); 1143 if (res != 0) { 1144 warn("cannot expand pattern (%d): %s", 1145 res, q); 1146 continue; 1147 } 1148 1149 if (verbose > 2) 1150 printf("\t+ Expanding pattern %s\n", q); 1151 1152 for (i = 0; i < pglob.gl_matchc; i++) 1153 add_to_queue(pglob.gl_pathv[i], 1154 inclist); 1155 globfree(&pglob); 1156 } else 1157 add_to_queue(q, inclist); 1158 continue; 1159 } 1160 1161 special = 0; 1162 working = init_entry(q, NULL); 1163 if (strcasecmp(DEFAULT_MARKER, q) == 0) { 1164 special = 1; 1165 if (defconf_p != NULL) { 1166 warnx("Ignoring duplicate entry for %s!", q); 1167 free_entry(working); 1168 continue; 1169 } 1170 defconf_p = working; 1171 } 1172 1173 q = parse = missing_field(sob(parse + 1), errline); 1174 parse = son(parse); 1175 if (!*parse) 1176 errx(1, "malformed line (missing fields):\n%s", 1177 errline); 1178 *parse = '\0'; 1179 if ((group = strchr(q, ':')) != NULL || 1180 (group = strrchr(q, '.')) != NULL) { 1181 *group++ = '\0'; 1182 if (*q) { 1183 if (!(isnumberstr(q))) { 1184 if ((pwd = getpwnam(q)) == NULL) 1185 errx(1, 1186 "error in config file; unknown user:\n%s", 1187 errline); 1188 working->uid = pwd->pw_uid; 1189 } else 1190 working->uid = atoi(q); 1191 } else 1192 working->uid = (uid_t)-1; 1193 1194 q = group; 1195 if (*q) { 1196 if (!(isnumberstr(q))) { 1197 if ((grp = getgrnam(q)) == NULL) 1198 errx(1, 1199 "error in config file; unknown group:\n%s", 1200 errline); 1201 working->gid = grp->gr_gid; 1202 } else 1203 working->gid = atoi(q); 1204 } else 1205 working->gid = (gid_t)-1; 1206 1207 q = parse = missing_field(sob(parse + 1), errline); 1208 parse = son(parse); 1209 if (!*parse) 1210 errx(1, "malformed line (missing fields):\n%s", 1211 errline); 1212 *parse = '\0'; 1213 } else { 1214 working->uid = (uid_t)-1; 1215 working->gid = (gid_t)-1; 1216 } 1217 1218 if (!sscanf(q, "%o", &working->permissions)) 1219 errx(1, "error in config file; bad permissions:\n%s", 1220 errline); 1221 1222 q = parse = missing_field(sob(parse + 1), errline); 1223 parse = son(parse); 1224 if (!*parse) 1225 errx(1, "malformed line (missing fields):\n%s", 1226 errline); 1227 *parse = '\0'; 1228 if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0) 1229 errx(1, "error in config file; bad value for count of logs to save:\n%s", 1230 errline); 1231 1232 q = parse = missing_field(sob(parse + 1), errline); 1233 parse = son(parse); 1234 if (!*parse) 1235 errx(1, "malformed line (missing fields):\n%s", 1236 errline); 1237 *parse = '\0'; 1238 if (isdigitch(*q)) 1239 working->trsize = atoi(q); 1240 else if (strcmp(q, "*") == 0) 1241 working->trsize = -1; 1242 else { 1243 warnx("Invalid value of '%s' for 'size' in line:\n%s", 1244 q, errline); 1245 working->trsize = -1; 1246 } 1247 1248 working->flags = 0; 1249 working->compress = COMPRESS_NONE; 1250 q = parse = missing_field(sob(parse + 1), errline); 1251 parse = son(parse); 1252 eol = !*parse; 1253 *parse = '\0'; 1254 { 1255 char *ep; 1256 u_long ul; 1257 1258 ul = strtoul(q, &ep, 10); 1259 if (ep == q) 1260 working->hours = 0; 1261 else if (*ep == '*') 1262 working->hours = -1; 1263 else if (ul > INT_MAX) 1264 errx(1, "interval is too large:\n%s", errline); 1265 else 1266 working->hours = ul; 1267 1268 if (*ep == '\0' || strcmp(ep, "*") == 0) 1269 goto no_trimat; 1270 if (*ep != '@' && *ep != '$') 1271 errx(1, "malformed interval/at:\n%s", errline); 1272 1273 working->flags |= CE_TRIMAT; 1274 working->trim_at = ptime_init(NULL); 1275 ptm_opts = PTM_PARSE_ISO8601; 1276 if (*ep == '$') 1277 ptm_opts = PTM_PARSE_DWM; 1278 ptm_opts |= PTM_PARSE_MATCHDOM; 1279 res = ptime_relparse(working->trim_at, ptm_opts, 1280 ptimeget_secs(timenow), ep + 1); 1281 if (res == -2) 1282 errx(1, "nonexistent time for 'at' value:\n%s", 1283 errline); 1284 else if (res < 0) 1285 errx(1, "malformed 'at' value:\n%s", errline); 1286 } 1287 no_trimat: 1288 1289 if (eol) 1290 q = NULL; 1291 else { 1292 q = parse = sob(parse + 1); /* Optional field */ 1293 parse = son(parse); 1294 if (!*parse) 1295 eol = 1; 1296 *parse = '\0'; 1297 } 1298 1299 for (; q && *q && !isspacech(*q); q++) { 1300 switch (tolowerch(*q)) { 1301 case 'b': 1302 working->flags |= CE_BINARY; 1303 break; 1304 case 'c': 1305 working->flags |= CE_CREATE; 1306 break; 1307 case 'd': 1308 working->flags |= CE_NODUMP; 1309 break; 1310 case 'g': 1311 working->flags |= CE_GLOB; 1312 break; 1313 case 'j': 1314 working->compress = COMPRESS_BZIP2; 1315 break; 1316 case 'n': 1317 working->flags |= CE_NOSIGNAL; 1318 break; 1319 case 'p': 1320 working->flags |= CE_PLAIN0; 1321 break; 1322 case 'r': 1323 working->flags |= CE_PID2CMD; 1324 break; 1325 case 't': 1326 working->flags |= CE_RFC5424; 1327 break; 1328 case 'u': 1329 working->flags |= CE_SIGNALGROUP; 1330 break; 1331 case 'w': 1332 /* Deprecated flag - keep for compatibility purposes */ 1333 break; 1334 case 'x': 1335 working->compress = COMPRESS_XZ; 1336 break; 1337 #if 0 1338 case 'y': 1339 working->compress = COMPRESS_ZSTD; 1340 break; 1341 #endif 1342 case 'z': 1343 working->compress = COMPRESS_GZIP; 1344 break; 1345 case '-': 1346 break; 1347 case 'f': /* Used by OpenBSD for "CE_FOLLOW" */ 1348 case 'm': /* Used by OpenBSD for "CE_MONITOR" */ 1349 default: 1350 errx(1, "illegal flag in config file -- %c", 1351 *q); 1352 } 1353 } 1354 1355 if (eol) 1356 q = NULL; 1357 else { 1358 q = parse = sob(parse + 1); /* Optional field */ 1359 parse = son(parse); 1360 if (!*parse) 1361 eol = 1; 1362 *parse = '\0'; 1363 } 1364 1365 working->pid_cmd_file = NULL; 1366 if (q && *q) { 1367 if (*q == '/') 1368 working->pid_cmd_file = strdup(q); 1369 else if (isalnum(*q)) 1370 goto got_sig; 1371 else { 1372 errx(1, 1373 "illegal pid file or signal in config file:\n%s", 1374 errline); 1375 } 1376 } 1377 if (eol) 1378 q = NULL; 1379 else { 1380 q = parse = sob(parse + 1); /* Optional field */ 1381 *(parse = son(parse)) = '\0'; 1382 } 1383 1384 working->sig = SIGHUP; 1385 if (q && *q) { 1386 got_sig: 1387 working->sig = parse_signal(q); 1388 if (working->sig < 1 || working->sig >= sys_nsig) { 1389 errx(1, 1390 "illegal signal in config file:\n%s", 1391 errline); 1392 } 1393 } 1394 1395 /* 1396 * Finish figuring out what pid-file to use (if any) in 1397 * later processing if this logfile needs to be rotated. 1398 */ 1399 if ((working->flags & CE_NOSIGNAL) == CE_NOSIGNAL) { 1400 /* 1401 * This config-entry specified 'n' for nosignal, 1402 * see if it also specified an explicit pid_cmd_file. 1403 * This would be a pretty pointless combination. 1404 */ 1405 if (working->pid_cmd_file != NULL) { 1406 warnx("Ignoring '%s' because flag 'n' was specified in line:\n%s", 1407 working->pid_cmd_file, errline); 1408 free(working->pid_cmd_file); 1409 working->pid_cmd_file = NULL; 1410 } 1411 } else if (working->pid_cmd_file == NULL) { 1412 /* 1413 * This entry did not specify the 'n' flag, which 1414 * means it should signal syslogd unless it had 1415 * specified some other pid-file (and obviously the 1416 * syslog pid-file will not be for a process-group). 1417 * Also, we should only try to notify syslog if we 1418 * are root. 1419 */ 1420 if (working->flags & CE_SIGNALGROUP) { 1421 warnx("Ignoring flag 'U' in line:\n%s", 1422 errline); 1423 working->flags &= ~CE_SIGNALGROUP; 1424 } 1425 if (needroot) 1426 working->pid_cmd_file = strdup(path_syslogpid); 1427 } 1428 1429 /* 1430 * Add this entry to the appropriate list of entries, unless 1431 * it was some kind of special entry (eg: <default>). 1432 */ 1433 if (special) { 1434 ; /* Do not add to any list */ 1435 } else if (working->flags & CE_GLOB) { 1436 STAILQ_INSERT_TAIL(glob_p, working, cf_nextp); 1437 } else { 1438 STAILQ_INSERT_TAIL(work_p, working, cf_nextp); 1439 } 1440 } 1441 if (errline != NULL) 1442 free(errline); 1443 } 1444 1445 static char * 1446 missing_field(char *p, char *errline) 1447 { 1448 1449 if (!p || !*p) 1450 errx(1, "missing field in config file:\n%s", errline); 1451 return (p); 1452 } 1453 1454 /* 1455 * In our sort we return it in the reverse of what qsort normally 1456 * would do, as we want the newest files first. If we have two 1457 * entries with the same time we don't really care about order. 1458 * 1459 * Support function for qsort() in delete_oldest_timelog(). 1460 */ 1461 static int 1462 oldlog_entry_compare(const void *a, const void *b) 1463 { 1464 const struct oldlog_entry *ola = a, *olb = b; 1465 1466 if (ola->t > olb->t) 1467 return (-1); 1468 else if (ola->t < olb->t) 1469 return (1); 1470 else 1471 return (0); 1472 } 1473 1474 /* 1475 * Check whether the file corresponding to dp is an archive of the logfile 1476 * logfname, based on the timefnamefmt format string. Return true and fill out 1477 * tm if this is the case; otherwise return false. 1478 */ 1479 static int 1480 validate_old_timelog(int fd, const struct dirent *dp, const char *logfname, 1481 struct tm *tm) 1482 { 1483 struct stat sb; 1484 size_t logfname_len; 1485 char *s; 1486 int c; 1487 1488 logfname_len = strlen(logfname); 1489 1490 if (dp->d_type != DT_REG) { 1491 /* 1492 * Some filesystems (e.g. NFS) don't fill out the d_type field 1493 * and leave it set to DT_UNKNOWN; in this case we must obtain 1494 * the file type ourselves. 1495 */ 1496 if (dp->d_type != DT_UNKNOWN || 1497 fstatat(fd, dp->d_name, &sb, AT_SYMLINK_NOFOLLOW) != 0 || 1498 !S_ISREG(sb.st_mode)) 1499 return (0); 1500 } 1501 /* Ignore everything but files with our logfile prefix. */ 1502 if (strncmp(dp->d_name, logfname, logfname_len) != 0) 1503 return (0); 1504 /* Ignore the actual non-rotated logfile. */ 1505 if (dp->d_namlen == logfname_len) 1506 return (0); 1507 1508 /* 1509 * Make sure we created have found a logfile, so the 1510 * postfix is valid, IE format is: '.<time>(.[bgx]z)?'. 1511 */ 1512 if (dp->d_name[logfname_len] != '.') { 1513 if (verbose) 1514 printf("Ignoring %s which has unexpected " 1515 "extension '%s'\n", dp->d_name, 1516 &dp->d_name[logfname_len]); 1517 return (0); 1518 } 1519 memset(tm, 0, sizeof(*tm)); 1520 if ((s = strptime(&dp->d_name[logfname_len + 1], 1521 timefnamefmt, tm)) == NULL) { 1522 /* 1523 * We could special case "old" sequentially named logfiles here, 1524 * but we do not as that would require special handling to 1525 * decide which one was the oldest compared to "new" time based 1526 * logfiles. 1527 */ 1528 if (verbose) 1529 printf("Ignoring %s which does not " 1530 "match time format\n", dp->d_name); 1531 return (0); 1532 } 1533 1534 for (c = 0; c < COMPRESS_TYPES; c++) 1535 if (strcmp(s, compress_type[c].suffix) == 0) 1536 /* We're done. */ 1537 return (1); 1538 1539 if (verbose) 1540 printf("Ignoring %s which has unexpected extension '%s'\n", 1541 dp->d_name, s); 1542 1543 return (0); 1544 } 1545 1546 /* 1547 * Delete the oldest logfiles, when using time based filenames. 1548 */ 1549 static void 1550 delete_oldest_timelog(const struct conf_entry *ent, const char *archive_dir) 1551 { 1552 char *basebuf, *dirbuf, errbuf[80]; 1553 const char *base, *dir; 1554 int dir_fd, i, logcnt, max_logcnt; 1555 struct oldlog_entry *oldlogs; 1556 struct dirent *dp; 1557 struct tm tm; 1558 DIR *dirp; 1559 1560 oldlogs = malloc(MAX_OLDLOGS * sizeof(struct oldlog_entry)); 1561 max_logcnt = MAX_OLDLOGS; 1562 logcnt = 0; 1563 1564 if (archive_dir != NULL && archive_dir[0] != '\0') { 1565 dirbuf = NULL; 1566 dir = archive_dir; 1567 } else { 1568 if ((dirbuf = strdup(ent->log)) == NULL) 1569 err(1, "strdup()"); 1570 dir = dirname(dirbuf); 1571 } 1572 1573 if ((basebuf = strdup(ent->log)) == NULL) 1574 err(1, "strdup()"); 1575 base = basename(basebuf); 1576 if (strcmp(base, "/") == 0) 1577 errx(1, "Invalid log filename - became '/'"); 1578 1579 if (verbose > 2) 1580 printf("Searching for old logs in %s\n", dir); 1581 1582 /* First we create a 'list' of all archived logfiles */ 1583 if ((dirp = opendir(dir)) == NULL) 1584 err(1, "Cannot open log directory '%s'", dir); 1585 dir_fd = dirfd(dirp); 1586 while ((dp = readdir(dirp)) != NULL) { 1587 if (validate_old_timelog(dir_fd, dp, base, &tm) == 0) 1588 continue; 1589 1590 /* 1591 * We should now have old an old rotated logfile, so 1592 * add it to the 'list'. 1593 */ 1594 if ((oldlogs[logcnt].t = timegm(&tm)) == -1) 1595 err(1, "Could not convert time string to time value"); 1596 if ((oldlogs[logcnt].fname = strdup(dp->d_name)) == NULL) 1597 err(1, "strdup()"); 1598 logcnt++; 1599 1600 /* 1601 * It is very unlikely we ever run out of space in the 1602 * logfile array from the default size, but lets 1603 * handle it anyway... 1604 */ 1605 if (logcnt >= max_logcnt) { 1606 max_logcnt *= 4; 1607 /* Detect integer overflow */ 1608 if (max_logcnt < logcnt) 1609 errx(1, "Too many old logfiles found"); 1610 oldlogs = realloc(oldlogs, 1611 max_logcnt * sizeof(struct oldlog_entry)); 1612 if (oldlogs == NULL) 1613 err(1, "realloc()"); 1614 } 1615 } 1616 1617 /* Second, if needed we delete oldest archived logfiles */ 1618 if (logcnt > 0 && logcnt >= ent->numlogs && ent->numlogs > 1) { 1619 oldlogs = realloc(oldlogs, logcnt * 1620 sizeof(struct oldlog_entry)); 1621 if (oldlogs == NULL) 1622 err(1, "realloc()"); 1623 1624 /* 1625 * We now sort the logs in the order of newest to 1626 * oldest. That way we can simply skip over the 1627 * number of records we want to keep. 1628 */ 1629 qsort(oldlogs, logcnt, sizeof(struct oldlog_entry), 1630 oldlog_entry_compare); 1631 for (i = ent->numlogs - 1; i < logcnt; i++) { 1632 if (noaction) 1633 printf("\trm -f %s/%s\n", dir, 1634 oldlogs[i].fname); 1635 else if (unlinkat(dir_fd, oldlogs[i].fname, 0) != 0) { 1636 snprintf(errbuf, sizeof(errbuf), 1637 "Could not delete old logfile '%s'", 1638 oldlogs[i].fname); 1639 perror(errbuf); 1640 } 1641 } 1642 } else if (verbose > 1) 1643 printf("No old logs to delete for logfile %s\n", ent->log); 1644 1645 /* Third, cleanup */ 1646 closedir(dirp); 1647 for (i = 0; i < logcnt; i++) { 1648 assert(oldlogs[i].fname != NULL); 1649 free(oldlogs[i].fname); 1650 } 1651 free(oldlogs); 1652 free(dirbuf); 1653 free(basebuf); 1654 } 1655 1656 /* 1657 * Generate a log filename, when using classic filenames. 1658 */ 1659 static void 1660 gen_classiclog_fname(char *fname, size_t fname_sz, const char *archive_dir, 1661 const char *namepart, int numlogs_c) 1662 { 1663 1664 if (archive_dir[0] != '\0') 1665 (void) snprintf(fname, fname_sz, "%s/%s.%d", archive_dir, 1666 namepart, numlogs_c); 1667 else 1668 (void) snprintf(fname, fname_sz, "%s.%d", namepart, numlogs_c); 1669 } 1670 1671 /* 1672 * Delete a rotated logfile, when using classic filenames. 1673 */ 1674 static void 1675 delete_classiclog(const char *archive_dir, const char *namepart, int numlog_c) 1676 { 1677 char file1[MAXPATHLEN], zfile1[MAXPATHLEN]; 1678 int c; 1679 1680 gen_classiclog_fname(file1, sizeof(file1), archive_dir, namepart, 1681 numlog_c); 1682 1683 for (c = 0; c < COMPRESS_TYPES; c++) { 1684 (void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1, 1685 compress_type[c].suffix); 1686 if (noaction) 1687 printf("\trm -f %s\n", zfile1); 1688 else 1689 (void) unlink(zfile1); 1690 } 1691 } 1692 1693 /* 1694 * Only add to the queue if the file hasn't already been added. This is 1695 * done to prevent circular include loops. 1696 */ 1697 static void 1698 add_to_queue(const char *fname, struct ilist *inclist) 1699 { 1700 struct include_entry *inc; 1701 1702 STAILQ_FOREACH(inc, inclist, inc_nextp) { 1703 if (strcmp(fname, inc->file) == 0) { 1704 warnx("duplicate include detected: %s", fname); 1705 return; 1706 } 1707 } 1708 1709 inc = malloc(sizeof(struct include_entry)); 1710 if (inc == NULL) 1711 err(1, "malloc of inc"); 1712 inc->file = strdup(fname); 1713 1714 if (verbose > 2) 1715 printf("\t+ Adding %s to the processing queue.\n", fname); 1716 1717 STAILQ_INSERT_TAIL(inclist, inc, inc_nextp); 1718 } 1719 1720 /* 1721 * Search for logfile and return its compression suffix (if supported) 1722 * The suffix detection is first-match in the order of compress_types 1723 * 1724 * Note: if logfile without suffix exists (uncompressed, COMPRESS_NONE) 1725 * a zero-length string is returned 1726 */ 1727 static const char * 1728 get_logfile_suffix(const char *logfile) 1729 { 1730 struct stat st; 1731 char zfile[MAXPATHLEN]; 1732 int c; 1733 1734 for (c = 0; c < COMPRESS_TYPES; c++) { 1735 strlcpy(zfile, logfile, MAXPATHLEN); 1736 strlcat(zfile, compress_type[c].suffix, MAXPATHLEN); 1737 if (lstat(zfile, &st) == 0) 1738 return (compress_type[c].suffix); 1739 } 1740 return (NULL); 1741 } 1742 1743 static fk_entry 1744 do_rotate(const struct conf_entry *ent) 1745 { 1746 char dirpart[MAXPATHLEN], namepart[MAXPATHLEN]; 1747 char file1[MAXPATHLEN], file2[MAXPATHLEN]; 1748 char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN]; 1749 const char *logfile_suffix; 1750 char datetimestr[30]; 1751 int flags, numlogs_c; 1752 fk_entry free_or_keep; 1753 struct sigwork_entry *swork; 1754 struct stat st; 1755 struct tm tm; 1756 time_t now; 1757 1758 flags = ent->flags; 1759 free_or_keep = FREE_ENT; 1760 1761 if (archtodir) { 1762 char *p; 1763 1764 /* build complete name of archive directory into dirpart */ 1765 if (*archdirname == '/') { /* absolute */ 1766 strlcpy(dirpart, archdirname, sizeof(dirpart)); 1767 } else { /* relative */ 1768 /* get directory part of logfile */ 1769 strlcpy(dirpart, ent->log, sizeof(dirpart)); 1770 if ((p = strrchr(dirpart, '/')) == NULL) 1771 dirpart[0] = '\0'; 1772 else 1773 *(p + 1) = '\0'; 1774 strlcat(dirpart, archdirname, sizeof(dirpart)); 1775 } 1776 1777 /* check if archive directory exists, if not, create it */ 1778 if (lstat(dirpart, &st)) 1779 createdir(ent, dirpart); 1780 1781 /* get filename part of logfile */ 1782 if ((p = strrchr(ent->log, '/')) == NULL) 1783 strlcpy(namepart, ent->log, sizeof(namepart)); 1784 else 1785 strlcpy(namepart, p + 1, sizeof(namepart)); 1786 } else { 1787 /* 1788 * Tell utility functions we are not using an archive 1789 * dir. 1790 */ 1791 dirpart[0] = '\0'; 1792 strlcpy(namepart, ent->log, sizeof(namepart)); 1793 } 1794 1795 /* Delete old logs */ 1796 if (timefnamefmt != NULL) 1797 delete_oldest_timelog(ent, dirpart); 1798 else { 1799 /* 1800 * Handle cleaning up after legacy newsyslog where we 1801 * kept ent->numlogs + 1 files. This code can go away 1802 * at some point in the future. 1803 */ 1804 delete_classiclog(dirpart, namepart, ent->numlogs); 1805 1806 if (ent->numlogs > 0) 1807 delete_classiclog(dirpart, namepart, ent->numlogs - 1); 1808 } 1809 1810 if (timefnamefmt != NULL) { 1811 /* If time functions fails we can't really do any sensible */ 1812 if (time(&now) == (time_t)-1 || 1813 localtime_r(&now, &tm) == NULL) 1814 bzero(&tm, sizeof(tm)); 1815 1816 strftime(datetimestr, sizeof(datetimestr), timefnamefmt, &tm); 1817 if (archtodir) { 1818 snprintf(file1, sizeof(file1), "%s/%s.%s", 1819 dirpart, namepart, datetimestr); 1820 } else { 1821 snprintf(file1, sizeof(file1), "%s.%s", 1822 ent->log, datetimestr); 1823 } 1824 1825 /* Don't run the code to move down logs */ 1826 numlogs_c = -1; 1827 } else { 1828 gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart, 1829 ent->numlogs - 1); 1830 numlogs_c = ent->numlogs - 2; /* copy for countdown */ 1831 } 1832 1833 /* Move down log files */ 1834 for (; numlogs_c >= 0; numlogs_c--) { 1835 strlcpy(file2, file1, sizeof(file2)); 1836 1837 gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart, 1838 numlogs_c); 1839 1840 logfile_suffix = get_logfile_suffix(file1); 1841 if (logfile_suffix == NULL) 1842 continue; 1843 strlcpy(zfile1, file1, MAXPATHLEN); 1844 strlcpy(zfile2, file2, MAXPATHLEN); 1845 strlcat(zfile1, logfile_suffix, MAXPATHLEN); 1846 strlcat(zfile2, logfile_suffix, MAXPATHLEN); 1847 1848 if (noaction) 1849 printf("\tmv %s %s\n", zfile1, zfile2); 1850 else { 1851 /* XXX - Ought to be checking for failure! */ 1852 rename(zfile1, zfile2); 1853 change_attrs(zfile2, ent); 1854 if (ent->compress && !strlen(logfile_suffix)) { 1855 /* compress old rotation */ 1856 struct zipwork_entry zwork; 1857 1858 memset(&zwork, 0, sizeof(zwork)); 1859 zwork.zw_conf = ent; 1860 zwork.zw_fsize = sizefile(zfile2); 1861 strcpy(zwork.zw_fname, zfile2); 1862 do_zipwork(&zwork); 1863 } 1864 } 1865 } 1866 1867 if (ent->numlogs > 0) { 1868 if (noaction) { 1869 /* 1870 * Note that savelog() may succeed with using link() 1871 * for the archtodir case, but there is no good way 1872 * of knowing if it will when doing "noaction", so 1873 * here we claim that it will have to do a copy... 1874 */ 1875 if (archtodir) 1876 printf("\tcp %s %s\n", ent->log, file1); 1877 else 1878 printf("\tln %s %s\n", ent->log, file1); 1879 printf("\ttouch %s\t\t" 1880 "# Update mtime for 'when'-interval processing\n", 1881 file1); 1882 } else { 1883 if (!(flags & CE_BINARY)) { 1884 /* Report the trimming to the old log */ 1885 log_trim(ent->log, ent); 1886 } 1887 savelog(ent->log, file1); 1888 /* 1889 * Interval-based rotations are done using the mtime of 1890 * the most recently archived log, so make sure it gets 1891 * updated during a rotation. 1892 */ 1893 utimes(file1, NULL); 1894 } 1895 change_attrs(file1, ent); 1896 } 1897 1898 /* Create the new log file and move it into place */ 1899 if (noaction) 1900 printf("Start new log...\n"); 1901 createlog(ent); 1902 1903 /* 1904 * Save all signalling and file-compression to be done after log 1905 * files from all entries have been rotated. This way any one 1906 * process will not be sent the same signal multiple times when 1907 * multiple log files had to be rotated. 1908 */ 1909 swork = NULL; 1910 if (ent->pid_cmd_file != NULL) 1911 swork = save_sigwork(ent); 1912 if (ent->numlogs > 0 && ent->compress > COMPRESS_NONE) { 1913 if (!(ent->flags & CE_PLAIN0) || 1914 strcmp(&file1[strlen(file1) - 2], ".0") != 0) { 1915 /* 1916 * The zipwork_entry will include a pointer to this 1917 * conf_entry, so the conf_entry should not be freed. 1918 */ 1919 free_or_keep = KEEP_ENT; 1920 save_zipwork(ent, swork, ent->fsize, file1); 1921 } 1922 } 1923 1924 return (free_or_keep); 1925 } 1926 1927 static void 1928 do_sigwork(struct sigwork_entry *swork) 1929 { 1930 struct sigwork_entry *nextsig; 1931 int kres, secs; 1932 char *tmp; 1933 1934 if (swork->sw_runcmd == 0 && (!(swork->sw_pidok) || swork->sw_pid == 0)) 1935 return; /* no work to do... */ 1936 1937 /* 1938 * If nosignal (-s) was specified, then do not signal any process. 1939 * Note that a nosignal request triggers a warning message if the 1940 * rotated logfile needs to be compressed, *unless* -R was also 1941 * specified. We assume that an `-sR' request came from a process 1942 * which writes to the logfile, and as such, we assume that process 1943 * has already made sure the logfile is not presently in use. This 1944 * just sets swork->sw_pidok to a special value, and do_zipwork 1945 * will print any necessary warning(s). 1946 */ 1947 if (nosignal) { 1948 if (!rotatereq) 1949 swork->sw_pidok = -1; 1950 return; 1951 } 1952 1953 /* 1954 * Compute the pause between consecutive signals. Use a longer 1955 * sleep time if we will be sending two signals to the same 1956 * daemon or process-group. 1957 */ 1958 secs = 0; 1959 nextsig = SLIST_NEXT(swork, sw_nextp); 1960 if (nextsig != NULL) { 1961 if (swork->sw_pid == nextsig->sw_pid) 1962 secs = 10; 1963 else 1964 secs = 1; 1965 } 1966 1967 if (noaction) { 1968 if (swork->sw_runcmd) 1969 printf("\tsh -c '%s %d'\n", swork->sw_fname, 1970 swork->sw_signum); 1971 else { 1972 printf("\tkill -%d %d \t\t# %s\n", swork->sw_signum, 1973 (int)swork->sw_pid, swork->sw_fname); 1974 if (secs > 0) 1975 printf("\tsleep %d\n", secs); 1976 } 1977 return; 1978 } 1979 1980 if (swork->sw_runcmd) { 1981 asprintf(&tmp, "%s %d", swork->sw_fname, swork->sw_signum); 1982 if (tmp == NULL) { 1983 warn("can't allocate memory to run %s", 1984 swork->sw_fname); 1985 return; 1986 } 1987 if (verbose) 1988 printf("Run command: %s\n", tmp); 1989 kres = system(tmp); 1990 if (kres) { 1991 warnx("%s: returned non-zero exit code: %d", 1992 tmp, kres); 1993 } 1994 free(tmp); 1995 return; 1996 } 1997 1998 kres = kill(swork->sw_pid, swork->sw_signum); 1999 if (kres != 0) { 2000 /* 2001 * Assume that "no such process" (ESRCH) is something 2002 * to warn about, but is not an error. Presumably the 2003 * process which writes to the rotated log file(s) is 2004 * gone, in which case we should have no problem with 2005 * compressing the rotated log file(s). 2006 */ 2007 if (errno != ESRCH) 2008 swork->sw_pidok = 0; 2009 warn("can't notify %s, pid %d = %s", swork->sw_pidtype, 2010 (int)swork->sw_pid, swork->sw_fname); 2011 } else { 2012 if (verbose) 2013 printf("Notified %s pid %d = %s\n", swork->sw_pidtype, 2014 (int)swork->sw_pid, swork->sw_fname); 2015 if (secs > 0) { 2016 if (verbose) 2017 printf("Pause %d second(s) between signals\n", 2018 secs); 2019 sleep(secs); 2020 } 2021 } 2022 } 2023 2024 static void 2025 do_zipwork(struct zipwork_entry *zwork) 2026 { 2027 const char *pgm_name, *pgm_path; 2028 int errsav, fcount, zstatus; 2029 pid_t pidzip, wpid; 2030 char zresult[MAXPATHLEN]; 2031 char command[BUFSIZ]; 2032 char **args; 2033 int c; 2034 2035 assert(zwork != NULL); 2036 pgm_path = NULL; 2037 strlcpy(zresult, zwork->zw_fname, sizeof(zresult)); 2038 args = calloc(ARGS_NUM, sizeof(*args)); 2039 if (args == NULL) 2040 err(1, "calloc()"); 2041 if (zwork->zw_conf != NULL && 2042 zwork->zw_conf->compress > COMPRESS_NONE) 2043 for (c = 1; c < COMPRESS_TYPES; c++) { 2044 if (zwork->zw_conf->compress == c) { 2045 pgm_path = compress_type[c].path; 2046 strlcat(zresult, 2047 compress_type[c].suffix, sizeof(zresult)); 2048 /* the first argument is always NULL, skip it */ 2049 for (c = 1; c < ARGS_NUM; c++) { 2050 if (compress_type[c].args[c] == NULL) 2051 break; 2052 args[c] = compress_type[c].args[c]; 2053 } 2054 break; 2055 } 2056 } 2057 if (pgm_path == NULL) { 2058 warnx("invalid entry for %s in do_zipwork", zwork->zw_fname); 2059 return; 2060 } 2061 pgm_name = strrchr(pgm_path, '/'); 2062 if (pgm_name == NULL) 2063 pgm_name = pgm_path; 2064 else 2065 pgm_name++; 2066 2067 args[0] = strdup(pgm_name); 2068 if (args[0] == NULL) 2069 err(1, "strdup()"); 2070 for (c = 0; args[c] != NULL; c++) 2071 ; 2072 args[c] = zwork->zw_fname; 2073 2074 if (zwork->zw_swork != NULL && zwork->zw_swork->sw_runcmd == 0 && 2075 zwork->zw_swork->sw_pidok <= 0) { 2076 warnx( 2077 "log %s not compressed because daemon(s) not notified", 2078 zwork->zw_fname); 2079 change_attrs(zwork->zw_fname, zwork->zw_conf); 2080 return; 2081 } 2082 2083 strlcpy(command, pgm_path, sizeof(command)); 2084 for (c = 1; args[c] != NULL; c++) { 2085 strlcat(command, " ", sizeof(command)); 2086 strlcat(command, args[c], sizeof(command)); 2087 } 2088 if (noaction) { 2089 printf("\t%s %s\n", pgm_name, zwork->zw_fname); 2090 change_attrs(zresult, zwork->zw_conf); 2091 return; 2092 } 2093 2094 if (verbose) { 2095 printf("Executing: %s\n", command); 2096 } 2097 fcount = 1; 2098 pidzip = fork(); 2099 while (pidzip < 0) { 2100 /* 2101 * The fork failed. If the failure was due to a temporary 2102 * problem, then wait a short time and try it again. 2103 */ 2104 errsav = errno; 2105 warn("fork() for `%s %s'", pgm_name, zwork->zw_fname); 2106 if (errsav != EAGAIN || fcount > 5) 2107 errx(1, "Exiting..."); 2108 sleep(fcount * 12); 2109 fcount++; 2110 pidzip = fork(); 2111 } 2112 if (!pidzip) { 2113 /* The child process executes the compression command */ 2114 execv(pgm_path, (char *const*) args); 2115 err(1, "execv(`%s')", command); 2116 } 2117 2118 wpid = waitpid(pidzip, &zstatus, 0); 2119 if (wpid == -1) { 2120 /* XXX - should this be a fatal error? */ 2121 warn("%s: waitpid(%d)", pgm_path, pidzip); 2122 return; 2123 } 2124 if (!WIFEXITED(zstatus)) { 2125 warnx("`%s' did not terminate normally", command); 2126 free(args[0]); 2127 free(args); 2128 return; 2129 } 2130 if (WEXITSTATUS(zstatus)) { 2131 warnx("`%s' terminated with a non-zero status (%d)", command, 2132 WEXITSTATUS(zstatus)); 2133 free(args[0]); 2134 free(args); 2135 return; 2136 } 2137 2138 free(args[0]); 2139 free(args); 2140 /* Compression was successful, set file attributes on the result. */ 2141 change_attrs(zresult, zwork->zw_conf); 2142 } 2143 2144 /* 2145 * Save information on any process we need to signal. Any single 2146 * process may need to be sent different signal-values for different 2147 * log files, but usually a single signal-value will cause the process 2148 * to close and re-open all of its log files. 2149 */ 2150 static struct sigwork_entry * 2151 save_sigwork(const struct conf_entry *ent) 2152 { 2153 struct sigwork_entry *sprev, *stmp; 2154 int ndiff; 2155 size_t tmpsiz; 2156 2157 sprev = NULL; 2158 ndiff = 1; 2159 SLIST_FOREACH(stmp, &swhead, sw_nextp) { 2160 ndiff = strcmp(ent->pid_cmd_file, stmp->sw_fname); 2161 if (ndiff > 0) 2162 break; 2163 if (ndiff == 0) { 2164 if (ent->sig == stmp->sw_signum) 2165 break; 2166 if (ent->sig > stmp->sw_signum) { 2167 ndiff = 1; 2168 break; 2169 } 2170 } 2171 sprev = stmp; 2172 } 2173 if (stmp != NULL && ndiff == 0) 2174 return (stmp); 2175 2176 tmpsiz = sizeof(struct sigwork_entry) + strlen(ent->pid_cmd_file) + 1; 2177 stmp = malloc(tmpsiz); 2178 2179 stmp->sw_runcmd = 0; 2180 /* If this is a command to run we just set the flag and run command */ 2181 if (ent->flags & CE_PID2CMD) { 2182 stmp->sw_pid = -1; 2183 stmp->sw_pidok = 0; 2184 stmp->sw_runcmd = 1; 2185 } else { 2186 set_swpid(stmp, ent); 2187 } 2188 stmp->sw_signum = ent->sig; 2189 strcpy(stmp->sw_fname, ent->pid_cmd_file); 2190 if (sprev == NULL) 2191 SLIST_INSERT_HEAD(&swhead, stmp, sw_nextp); 2192 else 2193 SLIST_INSERT_AFTER(sprev, stmp, sw_nextp); 2194 return (stmp); 2195 } 2196 2197 /* 2198 * Save information on any file we need to compress. We may see the same 2199 * file multiple times, so check the full list to avoid duplicates. The 2200 * list itself is sorted smallest-to-largest, because that's the order we 2201 * want to compress the files. If the partition is very low on disk space, 2202 * then the smallest files are the most likely to compress, and compressing 2203 * them first will free up more space for the larger files. 2204 */ 2205 static struct zipwork_entry * 2206 save_zipwork(const struct conf_entry *ent, const struct sigwork_entry *swork, 2207 int zsize, const char *zipfname) 2208 { 2209 struct zipwork_entry *zprev, *ztmp; 2210 int ndiff; 2211 size_t tmpsiz; 2212 2213 /* Compute the size if the caller did not know it. */ 2214 if (zsize < 0) 2215 zsize = sizefile(zipfname); 2216 2217 zprev = NULL; 2218 ndiff = 1; 2219 SLIST_FOREACH(ztmp, &zwhead, zw_nextp) { 2220 ndiff = strcmp(zipfname, ztmp->zw_fname); 2221 if (ndiff == 0) 2222 break; 2223 if (zsize > ztmp->zw_fsize) 2224 zprev = ztmp; 2225 } 2226 if (ztmp != NULL && ndiff == 0) 2227 return (ztmp); 2228 2229 tmpsiz = sizeof(struct zipwork_entry) + strlen(zipfname) + 1; 2230 ztmp = malloc(tmpsiz); 2231 ztmp->zw_conf = ent; 2232 ztmp->zw_swork = swork; 2233 ztmp->zw_fsize = zsize; 2234 strcpy(ztmp->zw_fname, zipfname); 2235 if (zprev == NULL) 2236 SLIST_INSERT_HEAD(&zwhead, ztmp, zw_nextp); 2237 else 2238 SLIST_INSERT_AFTER(zprev, ztmp, zw_nextp); 2239 return (ztmp); 2240 } 2241 2242 /* Send a signal to the pid specified by pidfile */ 2243 static void 2244 set_swpid(struct sigwork_entry *swork, const struct conf_entry *ent) 2245 { 2246 FILE *f; 2247 long minok, maxok, rval; 2248 char *endp, *linep, line[BUFSIZ]; 2249 2250 minok = MIN_PID; 2251 maxok = MAX_PID; 2252 swork->sw_pidok = 0; 2253 swork->sw_pid = 0; 2254 swork->sw_pidtype = "daemon"; 2255 if (ent->flags & CE_SIGNALGROUP) { 2256 /* 2257 * If we are expected to signal a process-group when 2258 * rotating this logfile, then the value read in should 2259 * be the negative of a valid process ID. 2260 */ 2261 minok = -MAX_PID; 2262 maxok = -MIN_PID; 2263 swork->sw_pidtype = "process-group"; 2264 } 2265 2266 f = fopen(ent->pid_cmd_file, "r"); 2267 if (f == NULL) { 2268 if (errno == ENOENT && enforcepid == 0) { 2269 /* 2270 * Warn if the PID file doesn't exist, but do 2271 * not consider it an error. Most likely it 2272 * means the process has been terminated, 2273 * so it should be safe to rotate any log 2274 * files that the process would have been using. 2275 */ 2276 swork->sw_pidok = 1; 2277 warnx("pid file doesn't exist: %s", ent->pid_cmd_file); 2278 } else 2279 warn("can't open pid file: %s", ent->pid_cmd_file); 2280 return; 2281 } 2282 2283 if (fgets(line, BUFSIZ, f) == NULL) { 2284 /* 2285 * Warn if the PID file is empty, but do not consider 2286 * it an error. Most likely it means the process has 2287 * has terminated, so it should be safe to rotate any 2288 * log files that the process would have been using. 2289 */ 2290 if (feof(f) && enforcepid == 0) { 2291 swork->sw_pidok = 1; 2292 warnx("pid/cmd file is empty: %s", ent->pid_cmd_file); 2293 } else 2294 warn("can't read from pid file: %s", ent->pid_cmd_file); 2295 fclose(f); 2296 return; 2297 } 2298 fclose(f); 2299 2300 errno = 0; 2301 linep = line; 2302 while (*linep == ' ') 2303 linep++; 2304 rval = strtol(linep, &endp, 10); 2305 if (*endp != '\0' && !isspacech(*endp)) { 2306 warnx("pid file does not start with a valid number: %s", 2307 ent->pid_cmd_file); 2308 } else if (rval < minok || rval > maxok) { 2309 warnx("bad value '%ld' for process number in %s", 2310 rval, ent->pid_cmd_file); 2311 if (verbose) 2312 warnx("\t(expecting value between %ld and %ld)", 2313 minok, maxok); 2314 } else { 2315 swork->sw_pidok = 1; 2316 swork->sw_pid = rval; 2317 } 2318 2319 return; 2320 } 2321 2322 /* Log the fact that the logs were turned over */ 2323 static int 2324 log_trim(const char *logname, const struct conf_entry *log_ent) 2325 { 2326 FILE *f; 2327 const char *xtra; 2328 2329 if ((f = fopen(logname, "a")) == NULL) 2330 return (-1); 2331 xtra = ""; 2332 if (log_ent->def_cfg) 2333 xtra = " using <default> rule"; 2334 if (log_ent->flags & CE_RFC5424) { 2335 if (log_ent->firstcreate) { 2336 fprintf(f, "<%d>1 %s %s newsyslog %d - - %s%s\n", 2337 LOG_MAKEPRI(LOG_USER, LOG_INFO), 2338 daytime_rfc5424, hostname, getpid(), 2339 "logfile first created", xtra); 2340 } else if (log_ent->r_reason != NULL) { 2341 fprintf(f, "<%d>1 %s %s newsyslog %d - - %s%s%s\n", 2342 LOG_MAKEPRI(LOG_USER, LOG_INFO), 2343 daytime_rfc5424, hostname, getpid(), 2344 "logfile turned over", log_ent->r_reason, xtra); 2345 } else { 2346 fprintf(f, "<%d>1 %s %s newsyslog %d - - %s%s\n", 2347 LOG_MAKEPRI(LOG_USER, LOG_INFO), 2348 daytime_rfc5424, hostname, getpid(), 2349 "logfile turned over", xtra); 2350 } 2351 } else { 2352 if (log_ent->firstcreate) 2353 fprintf(f, "%s %s newsyslog[%d]: logfile first created%s\n", 2354 daytime, hostname, getpid(), xtra); 2355 else if (log_ent->r_reason != NULL) 2356 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s%s\n", 2357 daytime, hostname, getpid(), log_ent->r_reason, xtra); 2358 else 2359 fprintf(f, "%s %s newsyslog[%d]: logfile turned over%s\n", 2360 daytime, hostname, getpid(), xtra); 2361 } 2362 if (fclose(f) == EOF) 2363 err(1, "log_trim: fclose"); 2364 return (0); 2365 } 2366 2367 /* Return size in kilobytes of a file */ 2368 static int 2369 sizefile(const char *file) 2370 { 2371 struct stat sb; 2372 2373 if (stat(file, &sb) < 0) 2374 return (-1); 2375 return (kbytes(sb.st_size)); 2376 } 2377 2378 /* 2379 * Return the mtime of the most recent archive of the logfile, using timestamp 2380 * based filenames. 2381 */ 2382 static time_t 2383 mtime_old_timelog(const char *file) 2384 { 2385 struct stat sb; 2386 struct tm tm; 2387 int dir_fd; 2388 time_t t; 2389 struct dirent *dp; 2390 DIR *dirp; 2391 char *logfname, *logfnamebuf, *dir, *dirbuf; 2392 2393 t = -1; 2394 2395 if ((dirbuf = strdup(file)) == NULL) { 2396 warn("strdup() of '%s'", file); 2397 return (t); 2398 } 2399 dir = dirname(dirbuf); 2400 if ((logfnamebuf = strdup(file)) == NULL) { 2401 warn("strdup() of '%s'", file); 2402 free(dirbuf); 2403 return (t); 2404 } 2405 logfname = basename(logfnamebuf); 2406 if (logfname[0] == '/') { 2407 warnx("Invalid log filename '%s'", logfname); 2408 goto out; 2409 } 2410 2411 if ((dirp = opendir(dir)) == NULL) { 2412 warn("Cannot open log directory '%s'", dir); 2413 goto out; 2414 } 2415 dir_fd = dirfd(dirp); 2416 /* Open the archive dir and find the most recent archive of logfname. */ 2417 while ((dp = readdir(dirp)) != NULL) { 2418 if (validate_old_timelog(dir_fd, dp, logfname, &tm) == 0) 2419 continue; 2420 2421 if (fstatat(dir_fd, dp->d_name, &sb, AT_SYMLINK_NOFOLLOW) == -1) { 2422 warn("Cannot stat '%s'", file); 2423 continue; 2424 } 2425 if (t < sb.st_mtime) 2426 t = sb.st_mtime; 2427 } 2428 closedir(dirp); 2429 2430 out: 2431 free(dirbuf); 2432 free(logfnamebuf); 2433 return (t); 2434 } 2435 2436 /* Return the age in hours of the most recent archive of the logfile. */ 2437 static int 2438 age_old_log(const char *file) 2439 { 2440 struct stat sb; 2441 const char *logfile_suffix; 2442 char tmp[MAXPATHLEN + sizeof(".0") + COMPRESS_SUFFIX_MAXLEN + 1]; 2443 time_t mtime; 2444 2445 if (archtodir) { 2446 char *p; 2447 2448 /* build name of archive directory into tmp */ 2449 if (*archdirname == '/') { /* absolute */ 2450 strlcpy(tmp, archdirname, sizeof(tmp)); 2451 } else { /* relative */ 2452 /* get directory part of logfile */ 2453 strlcpy(tmp, file, sizeof(tmp)); 2454 if ((p = strrchr(tmp, '/')) == NULL) 2455 tmp[0] = '\0'; 2456 else 2457 *(p + 1) = '\0'; 2458 strlcat(tmp, archdirname, sizeof(tmp)); 2459 } 2460 2461 strlcat(tmp, "/", sizeof(tmp)); 2462 2463 /* get filename part of logfile */ 2464 if ((p = strrchr(file, '/')) == NULL) 2465 strlcat(tmp, file, sizeof(tmp)); 2466 else 2467 strlcat(tmp, p + 1, sizeof(tmp)); 2468 } else { 2469 strlcpy(tmp, file, sizeof(tmp)); 2470 } 2471 2472 if (timefnamefmt != NULL) { 2473 mtime = mtime_old_timelog(tmp); 2474 if (mtime == -1) 2475 return (-1); 2476 } else { 2477 strlcat(tmp, ".0", sizeof(tmp)); 2478 logfile_suffix = get_logfile_suffix(tmp); 2479 if (logfile_suffix == NULL) 2480 return (-1); 2481 (void) strlcat(tmp, logfile_suffix, sizeof(tmp)); 2482 if (stat(tmp, &sb) < 0) 2483 return (-1); 2484 mtime = sb.st_mtime; 2485 } 2486 2487 return ((int)(ptimeget_secs(timenow) - mtime + 1800) / 3600); 2488 } 2489 2490 /* Skip Over Blanks */ 2491 static char * 2492 sob(char *p) 2493 { 2494 while (p && *p && isspace(*p)) 2495 p++; 2496 return (p); 2497 } 2498 2499 /* Skip Over Non-Blanks */ 2500 static char * 2501 son(char *p) 2502 { 2503 while (p && *p && !isspace(*p)) 2504 p++; 2505 return (p); 2506 } 2507 2508 /* Check if string is actually a number */ 2509 static int 2510 isnumberstr(const char *string) 2511 { 2512 while (*string) { 2513 if (!isdigitch(*string++)) 2514 return (0); 2515 } 2516 return (1); 2517 } 2518 2519 /* Check if string contains a glob */ 2520 static int 2521 isglobstr(const char *string) 2522 { 2523 char chr; 2524 2525 while ((chr = *string++)) { 2526 if (chr == '*' || chr == '?' || chr == '[') 2527 return (1); 2528 } 2529 return (0); 2530 } 2531 2532 /* 2533 * Save the active log file under a new name. A link to the new name 2534 * is the quick-and-easy way to do this. If that fails (which it will 2535 * if the destination is on another partition), then make a copy of 2536 * the file to the new location. 2537 */ 2538 static void 2539 savelog(char *from, char *to) 2540 { 2541 FILE *src, *dst; 2542 int c, res; 2543 2544 res = link(from, to); 2545 if (res == 0) 2546 return; 2547 2548 if ((src = fopen(from, "r")) == NULL) 2549 err(1, "can't fopen %s for reading", from); 2550 if ((dst = fopen(to, "w")) == NULL) 2551 err(1, "can't fopen %s for writing", to); 2552 2553 while ((c = getc(src)) != EOF) { 2554 if ((putc(c, dst)) == EOF) 2555 err(1, "error writing to %s", to); 2556 } 2557 2558 if (ferror(src)) 2559 err(1, "error reading from %s", from); 2560 if ((fclose(src)) != 0) 2561 err(1, "can't fclose %s", to); 2562 if ((fclose(dst)) != 0) 2563 err(1, "can't fclose %s", from); 2564 } 2565 2566 /* create one or more directory components of a path */ 2567 static void 2568 createdir(const struct conf_entry *ent, char *dirpart) 2569 { 2570 int res; 2571 char *s, *d; 2572 char mkdirpath[MAXPATHLEN]; 2573 struct stat st; 2574 2575 s = dirpart; 2576 d = mkdirpath; 2577 2578 for (;;) { 2579 *d++ = *s++; 2580 if (*s != '/' && *s != '\0') 2581 continue; 2582 *d = '\0'; 2583 res = lstat(mkdirpath, &st); 2584 if (res != 0) { 2585 if (noaction) { 2586 printf("\tmkdir %s\n", mkdirpath); 2587 } else { 2588 res = mkdir(mkdirpath, 0755); 2589 if (res != 0) 2590 err(1, "Error on mkdir(\"%s\") for -a", 2591 mkdirpath); 2592 } 2593 } 2594 if (*s == '\0') 2595 break; 2596 } 2597 if (verbose) { 2598 if (ent->firstcreate) 2599 printf("Created directory '%s' for new %s\n", 2600 dirpart, ent->log); 2601 else 2602 printf("Created directory '%s' for -a\n", dirpart); 2603 } 2604 } 2605 2606 /* 2607 * Create a new log file, destroying any currently-existing version 2608 * of the log file in the process. If the caller wants a backup copy 2609 * of the file to exist, they should call 'link(logfile,logbackup)' 2610 * before calling this routine. 2611 */ 2612 void 2613 createlog(const struct conf_entry *ent) 2614 { 2615 int fd, failed; 2616 struct stat st; 2617 char *realfile, *slash, tempfile[MAXPATHLEN]; 2618 2619 fd = -1; 2620 realfile = ent->log; 2621 2622 /* 2623 * If this log file is being created for the first time (-C option), 2624 * then it may also be true that the parent directory does not exist 2625 * yet. Check, and create that directory if it is missing. 2626 */ 2627 if (ent->firstcreate) { 2628 strlcpy(tempfile, realfile, sizeof(tempfile)); 2629 slash = strrchr(tempfile, '/'); 2630 if (slash != NULL) { 2631 *slash = '\0'; 2632 failed = stat(tempfile, &st); 2633 if (failed && errno != ENOENT) 2634 err(1, "Error on stat(%s)", tempfile); 2635 if (failed) 2636 createdir(ent, tempfile); 2637 else if (!S_ISDIR(st.st_mode)) 2638 errx(1, "%s exists but is not a directory", 2639 tempfile); 2640 } 2641 } 2642 2643 /* 2644 * First create an unused filename, so it can be chown'ed and 2645 * chmod'ed before it is moved into the real location. mkstemp 2646 * will create the file mode=600 & owned by us. Note that all 2647 * temp files will have a suffix of '.z<something>'. 2648 */ 2649 strlcpy(tempfile, realfile, sizeof(tempfile)); 2650 strlcat(tempfile, ".zXXXXXX", sizeof(tempfile)); 2651 if (noaction) 2652 printf("\tmktemp %s\n", tempfile); 2653 else { 2654 fd = mkstemp(tempfile); 2655 if (fd < 0) 2656 err(1, "can't mkstemp logfile %s", tempfile); 2657 2658 /* 2659 * Add status message to what will become the new log file. 2660 */ 2661 if (!(ent->flags & CE_BINARY)) { 2662 if (log_trim(tempfile, ent)) 2663 err(1, "can't add status message to log"); 2664 } 2665 } 2666 2667 /* Change the owner/group, if we are supposed to */ 2668 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) { 2669 if (noaction) 2670 printf("\tchown %u:%u %s\n", ent->uid, ent->gid, 2671 tempfile); 2672 else { 2673 failed = fchown(fd, ent->uid, ent->gid); 2674 if (failed) 2675 err(1, "can't fchown temp file %s", tempfile); 2676 } 2677 } 2678 2679 /* Turn on NODUMP if it was requested in the config-file. */ 2680 if (ent->flags & CE_NODUMP) { 2681 if (noaction) 2682 printf("\tchflags nodump %s\n", tempfile); 2683 else { 2684 failed = fchflags(fd, UF_NODUMP); 2685 if (failed) { 2686 warn("log_trim: fchflags(NODUMP)"); 2687 } 2688 } 2689 } 2690 2691 /* 2692 * Note that if the real logfile still exists, and if the call 2693 * to rename() fails, then "neither the old file nor the new 2694 * file shall be changed or created" (to quote the standard). 2695 * If the call succeeds, then the file will be replaced without 2696 * any window where some other process might find that the file 2697 * did not exist. 2698 * XXX - ? It may be that for some error conditions, we could 2699 * retry by first removing the realfile and then renaming. 2700 */ 2701 if (noaction) { 2702 printf("\tchmod %o %s\n", ent->permissions, tempfile); 2703 printf("\tmv %s %s\n", tempfile, realfile); 2704 } else { 2705 failed = fchmod(fd, ent->permissions); 2706 if (failed) 2707 err(1, "can't fchmod temp file '%s'", tempfile); 2708 failed = rename(tempfile, realfile); 2709 if (failed) 2710 err(1, "can't mv %s to %s", tempfile, realfile); 2711 } 2712 2713 if (fd >= 0) 2714 close(fd); 2715 } 2716 2717 /* 2718 * Change the attributes of a given filename to what was specified in 2719 * the newsyslog.conf entry. This routine is only called for files 2720 * that newsyslog expects that it has created, and thus it is a fatal 2721 * error if this routine finds that the file does not exist. 2722 */ 2723 static void 2724 change_attrs(const char *fname, const struct conf_entry *ent) 2725 { 2726 int failed; 2727 2728 if (noaction) { 2729 printf("\tchmod %o %s\n", ent->permissions, fname); 2730 2731 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) 2732 printf("\tchown %u:%u %s\n", 2733 ent->uid, ent->gid, fname); 2734 2735 if (ent->flags & CE_NODUMP) 2736 printf("\tchflags nodump %s\n", fname); 2737 return; 2738 } 2739 2740 failed = chmod(fname, ent->permissions); 2741 if (failed) { 2742 if (errno != EPERM) 2743 err(1, "chmod(%s) in change_attrs", fname); 2744 warn("change_attrs couldn't chmod(%s)", fname); 2745 } 2746 2747 if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) { 2748 failed = chown(fname, ent->uid, ent->gid); 2749 if (failed) 2750 warn("can't chown %s", fname); 2751 } 2752 2753 if (ent->flags & CE_NODUMP) { 2754 failed = chflags(fname, UF_NODUMP); 2755 if (failed) 2756 warn("can't chflags %s NODUMP", fname); 2757 } 2758 } 2759 2760 /* 2761 * Parse a signal number or signal name. Returns the signal number parsed or -1 2762 * on failure. 2763 */ 2764 static int 2765 parse_signal(const char *str) 2766 { 2767 int sig, i; 2768 const char *errstr; 2769 2770 sig = strtonum(str, 1, sys_nsig - 1, &errstr); 2771 2772 if (errstr == NULL) 2773 return (sig); 2774 if (strncasecmp(str, "SIG", 3) == 0) 2775 str += 3; 2776 2777 for (i = 1; i < sys_nsig; i++) { 2778 if (strcasecmp(str, sys_signame[i]) == 0) 2779 return (i); 2780 } 2781 2782 return (-1); 2783 } 2784