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route(8): Add some __attribute__((__noreturn__)).
[dragonfly.git] / usr.sbin / newsyslog / newsyslog.c
blob946d7a3a92fa7d643cca0b9042203e8ff7bddbc4
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 }
DragonFly BSD