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 */
50
51/*
52 * newsyslog - roll over selected logs at the appropriate time, keeping the a
53 * specified number of backup files around.
54 */
55
56#include <sys/cdefs.h>
57__FBSDID("$FreeBSD$");
58
59#define	OSF
60
61#include <sys/param.h>
62#include <sys/queue.h>
63#include <sys/sbuf.h>
64#include <sys/stat.h>
65#include <sys/wait.h>
66
67#include <assert.h>
68#include <ctype.h>
69#include <err.h>
70#include <errno.h>
71#include <dirent.h>
72#include <fcntl.h>
73#include <fnmatch.h>
74#include <glob.h>
75#include <grp.h>
76#include <paths.h>
77#include <pwd.h>
78#include <signal.h>
79#include <stdio.h>
80#include <libgen.h>
81#include <stdlib.h>
82#include <string.h>
83#include <syslog.h>
84#include <time.h>
85#include <unistd.h>
86
87#include "pathnames.h"
88#include "extern.h"
89
90/*
91 * Compression types
92 */
93#define	COMPRESS_TYPES  5	/* Number of supported compression types */
94
95#define	COMPRESS_NONE	0
96#define	COMPRESS_GZIP	1
97#define	COMPRESS_BZIP2	2
98#define	COMPRESS_XZ	3
99#define COMPRESS_ZSTD	4
100
101/*
102 * Bit-values for the 'flags' parsed from a config-file entry.
103 */
104#define	CE_BINARY	0x0008	/* Logfile is in binary, do not add status */
105				/*    messages to logfile(s) when rotating. */
106#define	CE_NOSIGNAL	0x0010	/* There is no process to signal when */
107				/*    trimming this file. */
108#define	CE_TRIMAT	0x0020	/* trim file at a specific time. */
109#define	CE_GLOB		0x0040	/* name of the log is file name pattern. */
110#define	CE_SIGNALGROUP	0x0080	/* Signal a process-group instead of a single */
111				/*    process when trimming this file. */
112#define	CE_CREATE	0x0100	/* Create the log file if it does not exist. */
113#define	CE_NODUMP	0x0200	/* Set 'nodump' on newly created log file. */
114#define	CE_PID2CMD	0x0400	/* Replace PID file with a shell command.*/
115#define	CE_PLAIN0	0x0800	/* Do not compress zero'th history file */
116#define	CE_RFC5424	0x1000	/* Use RFC5424 format rotation message */
117
118#define	MIN_PID         5	/* Don't touch pids lower than this */
119#define	MAX_PID		99999	/* was lower, see /usr/include/sys/proc.h */
120
121#define	kbytes(size)  (((size) + 1023) >> 10)
122
123#define	DEFAULT_MARKER	"<default>"
124#define	DEBUG_MARKER	"<debug>"
125#define	INCLUDE_MARKER	"<include>"
126#define	DEFAULT_TIMEFNAME_FMT	"%Y%m%dT%H%M%S"
127
128#define	MAX_OLDLOGS 65536	/* Default maximum number of old logfiles */
129
130struct compress_types {
131	const char *flag;	/* Flag in configuration file */
132	const char *suffix;	/* Compression suffix */
133	const char *path;	/* Path to compression program */
134	const char **flags;	/* Compression program flags */
135	int nflags;		/* Program flags count */
136};
137
138static const char *gzip_flags[] = { "-f" };
139#define bzip2_flags gzip_flags
140#define xz_flags gzip_flags
141static const char *zstd_flags[] = { "-q", "--rm" };
142
143static const struct compress_types compress_type[COMPRESS_TYPES] = {
144	{ "", "", "", NULL, 0 },
145	{ "Z", ".gz", _PATH_GZIP, gzip_flags, nitems(gzip_flags) },
146	{ "J", ".bz2", _PATH_BZIP2, bzip2_flags, nitems(bzip2_flags) },
147	{ "X", ".xz", _PATH_XZ, xz_flags, nitems(xz_flags) },
148	{ "Y", ".zst", _PATH_ZSTD, zstd_flags, nitems(zstd_flags) }
149};
150
151struct conf_entry {
152	STAILQ_ENTRY(conf_entry) cf_nextp;
153	char *log;		/* Name of the log */
154	char *pid_cmd_file;		/* PID or command file */
155	char *r_reason;		/* The reason this file is being rotated */
156	int firstcreate;	/* Creating log for the first time (-C). */
157	int rotate;		/* Non-zero if this file should be rotated */
158	int fsize;		/* size found for the log file */
159	uid_t uid;		/* Owner of log */
160	gid_t gid;		/* Group of log */
161	int numlogs;		/* Number of logs to keep */
162	int trsize;		/* Size cutoff to trigger trimming the log */
163	int hours;		/* Hours between log trimming */
164	struct ptime_data *trim_at;	/* Specific time to do trimming */
165	unsigned int permissions;	/* File permissions on the log */
166	int flags;		/* CE_BINARY */
167	int compress;		/* Compression */
168	int sig;		/* Signal to send */
169	int def_cfg;		/* Using the <default> rule for this file */
170};
171
172struct sigwork_entry {
173	SLIST_ENTRY(sigwork_entry) sw_nextp;
174	int	 sw_signum;		/* the signal to send */
175	int	 sw_pidok;		/* true if pid value is valid */
176	pid_t	 sw_pid;		/* the process id from the PID file */
177	const char *sw_pidtype;		/* "daemon" or "process group" */
178	int	 sw_runcmd;		/* run command or send PID to signal */
179	char	 sw_fname[1];		/* file the PID was read from or shell cmd */
180};
181
182struct zipwork_entry {
183	SLIST_ENTRY(zipwork_entry) zw_nextp;
184	const struct conf_entry *zw_conf;	/* for chown/perm/flag info */
185	const struct sigwork_entry *zw_swork;	/* to know success of signal */
186	int	 zw_fsize;		/* size of the file to compress */
187	char	 zw_fname[1];		/* the file to compress */
188};
189
190struct include_entry {
191	STAILQ_ENTRY(include_entry) inc_nextp;
192	const char *file;	/* Name of file to process */
193};
194
195struct oldlog_entry {
196	char *fname;		/* Filename of the log file */
197	time_t t;		/* Parsed timestamp of the logfile */
198};
199
200typedef enum {
201	FREE_ENT, KEEP_ENT
202}	fk_entry;
203
204STAILQ_HEAD(cflist, conf_entry);
205static SLIST_HEAD(swlisthead, sigwork_entry) swhead =
206    SLIST_HEAD_INITIALIZER(swhead);
207static SLIST_HEAD(zwlisthead, zipwork_entry) zwhead =
208    SLIST_HEAD_INITIALIZER(zwhead);
209STAILQ_HEAD(ilist, include_entry);
210
211int dbg_at_times;		/* -D Show details of 'trim_at' code */
212
213static int archtodir = 0;	/* Archive old logfiles to other directory */
214static int createlogs;		/* Create (non-GLOB) logfiles which do not */
215				/*    already exist.  1=='for entries with */
216				/*    C flag', 2=='for all entries'. */
217int verbose = 0;		/* Print out what's going on */
218static int needroot = 1;	/* Root privs are necessary */
219int noaction = 0;		/* Don't do anything, just show it */
220static int norotate = 0;	/* Don't rotate */
221static int nosignal;		/* Do not send any signals */
222static int enforcepid = 0;	/* If PID file does not exist or empty, do nothing */
223static int force = 0;		/* Force the trim no matter what */
224static int rotatereq = 0;	/* -R = Always rotate the file(s) as given */
225				/*    on the command (this also requires   */
226				/*    that a list of files *are* given on  */
227				/*    the run command). */
228static char *requestor;		/* The name given on a -R request */
229static char *timefnamefmt = NULL;/* Use time based filenames instead of .0 */
230static char *archdirname;	/* Directory path to old logfiles archive */
231static char *destdir = NULL;	/* Directory to treat at root for logs */
232static const char *conf;	/* Configuration file to use */
233
234struct ptime_data *dbg_timenow;	/* A "timenow" value set via -D option */
235static struct ptime_data *timenow; /* The time to use for checking at-fields */
236
237#define	DAYTIME_LEN	16
238static char daytime[DAYTIME_LEN];/* The current time in human readable form,
239				  * used for rotation-tracking messages. */
240
241/* Another buffer to hold the current time in RFC5424 format. Fractional
242 * seconds are allowed by the RFC, but are not included in the
243 * rotation-tracking messages written by newsyslog and so are not accounted for
244 * in the length below.
245 */
246#define	DAYTIME_RFC5424_LEN	sizeof("YYYY-MM-DDTHH:MM:SS+00:00")
247static char daytime_rfc5424[DAYTIME_RFC5424_LEN];
248
249static char hostname[MAXHOSTNAMELEN]; /* hostname */
250static size_t hostname_shortlen;
251
252static const char *path_syslogpid = _PATH_SYSLOGPID;
253
254static struct cflist *get_worklist(char **files);
255static void parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
256		    struct conf_entry **defconf, struct ilist *inclist);
257static void add_to_queue(const char *fname, struct ilist *inclist);
258static char *sob(char *p);
259static char *son(char *p);
260static int isnumberstr(const char *);
261static int isglobstr(const char *);
262static char *missing_field(char *p, char *errline);
263static void	 change_attrs(const char *, const struct conf_entry *);
264static const char *get_logfile_suffix(const char *logfile);
265static fk_entry	 do_entry(struct conf_entry *);
266static fk_entry	 do_rotate(const struct conf_entry *);
267static void	 do_sigwork(struct sigwork_entry *);
268static void	 do_zipwork(struct zipwork_entry *);
269static struct sigwork_entry *
270		 save_sigwork(const struct conf_entry *);
271static struct zipwork_entry *
272		 save_zipwork(const struct conf_entry *, const struct
273		    sigwork_entry *, int, const char *);
274static void	 set_swpid(struct sigwork_entry *, const struct conf_entry *);
275static int	 sizefile(const char *);
276static void expand_globs(struct cflist *work_p, struct cflist *glob_p);
277static void free_clist(struct cflist *list);
278static void free_entry(struct conf_entry *ent);
279static struct conf_entry *init_entry(const char *fname,
280		struct conf_entry *src_entry);
281static void parse_args(int argc, char **argv);
282static int parse_doption(const char *doption);
283static void usage(void);
284static int log_trim(const char *logname, const struct conf_entry *log_ent);
285static int age_old_log(const char *file);
286static void savelog(char *from, char *to);
287static void createdir(const struct conf_entry *ent, char *dirpart);
288static void createlog(const struct conf_entry *ent);
289static int parse_signal(const char *str);
290
291/*
292 * All the following take a parameter of 'int', but expect values in the
293 * range of unsigned char.  Define wrappers which take values of type 'char',
294 * whether signed or unsigned, and ensure they end up in the right range.
295 */
296#define	isdigitch(Anychar) isdigit((u_char)(Anychar))
297#define	isprintch(Anychar) isprint((u_char)(Anychar))
298#define	isspacech(Anychar) isspace((u_char)(Anychar))
299#define	tolowerch(Anychar) tolower((u_char)(Anychar))
300
301int
302main(int argc, char **argv)
303{
304	struct cflist *worklist;
305	struct conf_entry *p;
306	struct sigwork_entry *stmp;
307	struct zipwork_entry *ztmp;
308
309	SLIST_INIT(&swhead);
310	SLIST_INIT(&zwhead);
311
312	parse_args(argc, argv);
313	argc -= optind;
314	argv += optind;
315
316	if (needroot && getuid() && geteuid())
317		errx(1, "must have root privs");
318	worklist = get_worklist(argv);
319
320	/*
321	 * Rotate all the files which need to be rotated.  Note that
322	 * some users have *hundreds* of entries in newsyslog.conf!
323	 */
324	while (!STAILQ_EMPTY(worklist)) {
325		p = STAILQ_FIRST(worklist);
326		STAILQ_REMOVE_HEAD(worklist, cf_nextp);
327		if (do_entry(p) == FREE_ENT)
328			free_entry(p);
329	}
330
331	/*
332	 * Send signals to any processes which need a signal to tell
333	 * them to close and re-open the log file(s) we have rotated.
334	 * Note that zipwork_entries include pointers to these
335	 * sigwork_entry's, so we can not free the entries here.
336	 */
337	if (!SLIST_EMPTY(&swhead)) {
338		if (noaction || verbose)
339			printf("Signal all daemon process(es)...\n");
340		SLIST_FOREACH(stmp, &swhead, sw_nextp)
341			do_sigwork(stmp);
342		if (!(rotatereq && nosignal)) {
343			if (noaction)
344				printf("\tsleep 10\n");
345			else {
346				if (verbose)
347					printf("Pause 10 seconds to allow "
348					    "daemon(s) to close log file(s)\n");
349				sleep(10);
350			}
351		}
352	}
353	/*
354	 * Compress all files that we're expected to compress, now
355	 * that all processes should have closed the files which
356	 * have been rotated.
357	 */
358	if (!SLIST_EMPTY(&zwhead)) {
359		if (noaction || verbose)
360			printf("Compress all rotated log file(s)...\n");
361		while (!SLIST_EMPTY(&zwhead)) {
362			ztmp = SLIST_FIRST(&zwhead);
363			do_zipwork(ztmp);
364			SLIST_REMOVE_HEAD(&zwhead, zw_nextp);
365			free(ztmp);
366		}
367	}
368	/* Now free all the sigwork entries. */
369	while (!SLIST_EMPTY(&swhead)) {
370		stmp = SLIST_FIRST(&swhead);
371		SLIST_REMOVE_HEAD(&swhead, sw_nextp);
372		free(stmp);
373	}
374
375	while (wait(NULL) > 0 || errno == EINTR)
376		;
377	return (0);
378}
379
380static struct conf_entry *
381init_entry(const char *fname, struct conf_entry *src_entry)
382{
383	struct conf_entry *tempwork;
384
385	if (verbose > 4)
386		printf("\t--> [creating entry for %s]\n", fname);
387
388	tempwork = malloc(sizeof(struct conf_entry));
389	if (tempwork == NULL)
390		err(1, "malloc of conf_entry for %s", fname);
391
392	if (destdir == NULL || fname[0] != '/')
393		tempwork->log = strdup(fname);
394	else
395		asprintf(&tempwork->log, "%s%s", destdir, fname);
396	if (tempwork->log == NULL)
397		err(1, "strdup for %s", fname);
398
399	if (src_entry != NULL) {
400		tempwork->pid_cmd_file = NULL;
401		if (src_entry->pid_cmd_file)
402			tempwork->pid_cmd_file = strdup(src_entry->pid_cmd_file);
403		tempwork->r_reason = NULL;
404		tempwork->firstcreate = 0;
405		tempwork->rotate = 0;
406		tempwork->fsize = -1;
407		tempwork->uid = src_entry->uid;
408		tempwork->gid = src_entry->gid;
409		tempwork->numlogs = src_entry->numlogs;
410		tempwork->trsize = src_entry->trsize;
411		tempwork->hours = src_entry->hours;
412		tempwork->trim_at = NULL;
413		if (src_entry->trim_at != NULL)
414			tempwork->trim_at = ptime_init(src_entry->trim_at);
415		tempwork->permissions = src_entry->permissions;
416		tempwork->flags = src_entry->flags;
417		tempwork->compress = src_entry->compress;
418		tempwork->sig = src_entry->sig;
419		tempwork->def_cfg = src_entry->def_cfg;
420	} else {
421		/* Initialize as a "do-nothing" entry */
422		tempwork->pid_cmd_file = NULL;
423		tempwork->r_reason = NULL;
424		tempwork->firstcreate = 0;
425		tempwork->rotate = 0;
426		tempwork->fsize = -1;
427		tempwork->uid = (uid_t)-1;
428		tempwork->gid = (gid_t)-1;
429		tempwork->numlogs = 1;
430		tempwork->trsize = -1;
431		tempwork->hours = -1;
432		tempwork->trim_at = NULL;
433		tempwork->permissions = 0;
434		tempwork->flags = 0;
435		tempwork->compress = COMPRESS_NONE;
436		tempwork->sig = SIGHUP;
437		tempwork->def_cfg = 0;
438	}
439
440	return (tempwork);
441}
442
443static void
444free_entry(struct conf_entry *ent)
445{
446
447	if (ent == NULL)
448		return;
449
450	if (ent->log != NULL) {
451		if (verbose > 4)
452			printf("\t--> [freeing entry for %s]\n", ent->log);
453		free(ent->log);
454		ent->log = NULL;
455	}
456
457	if (ent->pid_cmd_file != NULL) {
458		free(ent->pid_cmd_file);
459		ent->pid_cmd_file = NULL;
460	}
461
462	if (ent->r_reason != NULL) {
463		free(ent->r_reason);
464		ent->r_reason = NULL;
465	}
466
467	if (ent->trim_at != NULL) {
468		ptime_free(ent->trim_at);
469		ent->trim_at = NULL;
470	}
471
472	free(ent);
473}
474
475static void
476free_clist(struct cflist *list)
477{
478	struct conf_entry *ent;
479
480	while (!STAILQ_EMPTY(list)) {
481		ent = STAILQ_FIRST(list);
482		STAILQ_REMOVE_HEAD(list, cf_nextp);
483		free_entry(ent);
484	}
485
486	free(list);
487	list = NULL;
488}
489
490static fk_entry
491do_entry(struct conf_entry * ent)
492{
493#define	REASON_MAX	80
494	int modtime;
495	fk_entry free_or_keep;
496	double diffsecs;
497	char temp_reason[REASON_MAX];
498	int oversized;
499
500	free_or_keep = FREE_ENT;
501	if (verbose)
502		printf("%s <%d%s>: ", ent->log, ent->numlogs,
503		    compress_type[ent->compress].flag);
504	ent->fsize = sizefile(ent->log);
505	oversized = ((ent->trsize > 0) && (ent->fsize >= ent->trsize));
506	modtime = age_old_log(ent->log);
507	ent->rotate = 0;
508	ent->firstcreate = 0;
509	if (ent->fsize < 0) {
510		/*
511		 * If either the C flag or the -C option was specified,
512		 * and if we won't be creating the file, then have the
513		 * verbose message include a hint as to why the file
514		 * will not be created.
515		 */
516		temp_reason[0] = '\0';
517		if (createlogs > 1)
518			ent->firstcreate = 1;
519		else if ((ent->flags & CE_CREATE) && createlogs)
520			ent->firstcreate = 1;
521		else if (ent->flags & CE_CREATE)
522			strlcpy(temp_reason, " (no -C option)", REASON_MAX);
523		else if (createlogs)
524			strlcpy(temp_reason, " (no C flag)", REASON_MAX);
525
526		if (ent->firstcreate) {
527			if (verbose)
528				printf("does not exist -> will create.\n");
529			createlog(ent);
530		} else if (verbose) {
531			printf("does not exist, skipped%s.\n", temp_reason);
532		}
533	} else {
534		if (ent->flags & CE_TRIMAT && !force && !rotatereq &&
535		    !oversized) {
536			diffsecs = ptimeget_diff(timenow, ent->trim_at);
537			if (diffsecs < 0.0) {
538				/* trim_at is some time in the future. */
539				if (verbose) {
540					ptime_adjust4dst(ent->trim_at,
541					    timenow);
542					printf("--> will trim at %s",
543					    ptimeget_ctime(ent->trim_at));
544				}
545				return (free_or_keep);
546			} else if (diffsecs >= 3600.0) {
547				/*
548				 * trim_at is more than an hour in the past,
549				 * so find the next valid trim_at time, and
550				 * tell the user what that will be.
551				 */
552				if (verbose && dbg_at_times)
553					printf("\n\t--> prev trim at %s\t",
554					    ptimeget_ctime(ent->trim_at));
555				if (verbose) {
556					ptimeset_nxtime(ent->trim_at);
557					printf("--> will trim at %s",
558					    ptimeget_ctime(ent->trim_at));
559				}
560				return (free_or_keep);
561			} else if (verbose && noaction && dbg_at_times) {
562				/*
563				 * If we are just debugging at-times, then
564				 * a detailed message is helpful.  Also
565				 * skip "doing" any commands, since they
566				 * would all be turned off by no-action.
567				 */
568				printf("\n\t--> timematch at %s",
569				    ptimeget_ctime(ent->trim_at));
570				return (free_or_keep);
571			} else if (verbose && ent->hours <= 0) {
572				printf("--> time is up\n");
573			}
574		}
575		if (verbose && (ent->trsize > 0))
576			printf("size (Kb): %d [%d] ", ent->fsize, ent->trsize);
577		if (verbose && (ent->hours > 0))
578			printf(" age (hr): %d [%d] ", modtime, ent->hours);
579
580		/*
581		 * Figure out if this logfile needs to be rotated.
582		 */
583		temp_reason[0] = '\0';
584		if (rotatereq) {
585			ent->rotate = 1;
586			snprintf(temp_reason, REASON_MAX, " due to -R from %s",
587			    requestor);
588		} else if (force) {
589			ent->rotate = 1;
590			snprintf(temp_reason, REASON_MAX, " due to -F request");
591		} else if (oversized) {
592			ent->rotate = 1;
593			snprintf(temp_reason, REASON_MAX, " due to size>%dK",
594			    ent->trsize);
595		} else if (ent->hours <= 0 && (ent->flags & CE_TRIMAT)) {
596			ent->rotate = 1;
597		} else if ((ent->hours > 0) && ((modtime >= ent->hours) ||
598		    (modtime < 0))) {
599			ent->rotate = 1;
600		}
601
602		/*
603		 * If the file needs to be rotated, then rotate it.
604		 */
605		if (ent->rotate && !norotate) {
606			if (temp_reason[0] != '\0')
607				ent->r_reason = strdup(temp_reason);
608			if (verbose)
609				printf("--> trimming log....\n");
610			if (noaction && !verbose)
611				printf("%s <%d%s>: trimming\n", ent->log,
612				    ent->numlogs,
613				    compress_type[ent->compress].flag);
614			free_or_keep = do_rotate(ent);
615		} else {
616			if (verbose)
617				printf("--> skipping\n");
618		}
619	}
620	return (free_or_keep);
621#undef REASON_MAX
622}
623
624static void
625parse_args(int argc, char **argv)
626{
627	int ch;
628	char *p;
629
630	timenow = ptime_init(NULL);
631	ptimeset_time(timenow, time(NULL));
632	strlcpy(daytime, ptimeget_ctime(timenow) + 4, DAYTIME_LEN);
633	ptimeget_ctime_rfc5424(timenow, daytime_rfc5424, DAYTIME_RFC5424_LEN);
634
635	/* Let's get our hostname */
636	(void)gethostname(hostname, sizeof(hostname));
637	hostname_shortlen = strcspn(hostname, ".");
638
639	/* Parse command line options. */
640	while ((ch = getopt(argc, argv, "a:d:f:nrst:vCD:FNPR:S:")) != -1)
641		switch (ch) {
642		case 'a':
643			archtodir++;
644			archdirname = optarg;
645			break;
646		case 'd':
647			destdir = optarg;
648			break;
649		case 'f':
650			conf = optarg;
651			break;
652		case 'n':
653			noaction++;
654			/* FALLTHROUGH */
655		case 'r':
656			needroot = 0;
657			break;
658		case 's':
659			nosignal = 1;
660			break;
661		case 't':
662			if (optarg[0] == '\0' ||
663			    strcmp(optarg, "DEFAULT") == 0)
664				timefnamefmt = strdup(DEFAULT_TIMEFNAME_FMT);
665			else
666				timefnamefmt = strdup(optarg);
667			break;
668		case 'v':
669			verbose++;
670			break;
671		case 'C':
672			/* Useful for things like rc.diskless... */
673			createlogs++;
674			break;
675		case 'D':
676			/*
677			 * Set some debugging option.  The specific option
678			 * depends on the value of optarg.  These options
679			 * may come and go without notice or documentation.
680			 */
681			if (parse_doption(optarg))
682				break;
683			usage();
684			/* NOTREACHED */
685		case 'F':
686			force++;
687			break;
688		case 'N':
689			norotate++;
690			break;
691		case 'P':
692			enforcepid++;
693			break;
694		case 'R':
695			rotatereq++;
696			requestor = strdup(optarg);
697			break;
698		case 'S':
699			path_syslogpid = optarg;
700			break;
701		case 'm':	/* Used by OpenBSD for "monitor mode" */
702		default:
703			usage();
704			/* NOTREACHED */
705		}
706
707	if (force && norotate) {
708		warnx("Only one of -F and -N may be specified.");
709		usage();
710		/* NOTREACHED */
711	}
712
713	if (rotatereq) {
714		if (optind == argc) {
715			warnx("At least one filename must be given when -R is specified.");
716			usage();
717			/* NOTREACHED */
718		}
719		/* Make sure "requestor" value is safe for a syslog message. */
720		for (p = requestor; *p != '\0'; p++) {
721			if (!isprintch(*p) && (*p != '\t'))
722				*p = '.';
723		}
724	}
725
726	if (dbg_timenow) {
727		/*
728		 * Note that the 'daytime' variable is not changed.
729		 * That is only used in messages that track when a
730		 * logfile is rotated, and if a file *is* rotated,
731		 * then it will still rotated at the "real now" time.
732		 */
733		ptime_free(timenow);
734		timenow = dbg_timenow;
735		fprintf(stderr, "Debug: Running as if TimeNow is %s",
736		    ptimeget_ctime(dbg_timenow));
737	}
738
739}
740
741/*
742 * These debugging options are mainly meant for developer use, such
743 * as writing regression-tests.  They would not be needed by users
744 * during normal operation of newsyslog...
745 */
746static int
747parse_doption(const char *doption)
748{
749	const char TN[] = "TN=";
750	int res;
751
752	if (strncmp(doption, TN, sizeof(TN) - 1) == 0) {
753		/*
754		 * The "TimeNow" debugging option.  This might be off
755		 * by an hour when crossing a timezone change.
756		 */
757		dbg_timenow = ptime_init(NULL);
758		res = ptime_relparse(dbg_timenow, PTM_PARSE_ISO8601,
759		    time(NULL), doption + sizeof(TN) - 1);
760		if (res == -2) {
761			warnx("Non-existent time specified on -D %s", doption);
762			return (0);			/* failure */
763		} else if (res < 0) {
764			warnx("Malformed time given on -D %s", doption);
765			return (0);			/* failure */
766		}
767		return (1);			/* successfully parsed */
768
769	}
770
771	if (strcmp(doption, "ats") == 0) {
772		dbg_at_times++;
773		return (1);			/* successfully parsed */
774	}
775
776	/* XXX - This check could probably be dropped. */
777	if ((strcmp(doption, "neworder") == 0) || (strcmp(doption, "oldorder")
778	    == 0)) {
779		warnx("NOTE: newsyslog always uses 'neworder'.");
780		return (1);			/* successfully parsed */
781	}
782
783	warnx("Unknown -D (debug) option: '%s'", doption);
784	return (0);				/* failure */
785}
786
787static void
788usage(void)
789{
790
791	fprintf(stderr,
792	    "usage: newsyslog [-CFNPnrsv] [-a directory] [-d directory] [-f config_file]\n"
793	    "                 [-S pidfile] [-t timefmt] [[-R tagname] file ...]\n");
794	exit(1);
795}
796
797/*
798 * Parse a configuration file and return a linked list of all the logs
799 * which should be processed.
800 */
801static struct cflist *
802get_worklist(char **files)
803{
804	FILE *f;
805	char **given;
806	struct cflist *cmdlist, *filelist, *globlist;
807	struct conf_entry *defconf, *dupent, *ent;
808	struct ilist inclist;
809	struct include_entry *inc;
810	int gmatch, fnres;
811
812	defconf = NULL;
813	STAILQ_INIT(&inclist);
814
815	filelist = malloc(sizeof(struct cflist));
816	if (filelist == NULL)
817		err(1, "malloc of filelist");
818	STAILQ_INIT(filelist);
819	globlist = malloc(sizeof(struct cflist));
820	if (globlist == NULL)
821		err(1, "malloc of globlist");
822	STAILQ_INIT(globlist);
823
824	inc = malloc(sizeof(struct include_entry));
825	if (inc == NULL)
826		err(1, "malloc of inc");
827	inc->file = conf;
828	if (inc->file == NULL)
829		inc->file = _PATH_CONF;
830	STAILQ_INSERT_TAIL(&inclist, inc, inc_nextp);
831
832	STAILQ_FOREACH(inc, &inclist, inc_nextp) {
833		if (strcmp(inc->file, "-") != 0)
834			f = fopen(inc->file, "r");
835		else {
836			f = stdin;
837			inc->file = "<stdin>";
838		}
839		if (!f)
840			err(1, "%s", inc->file);
841
842		if (verbose)
843			printf("Processing %s\n", inc->file);
844		parse_file(f, filelist, globlist, &defconf, &inclist);
845		(void) fclose(f);
846	}
847
848	/*
849	 * All config-file information has been read in and turned into
850	 * a filelist and a globlist.  If there were no specific files
851	 * given on the run command, then the only thing left to do is to
852	 * call a routine which finds all files matched by the globlist
853	 * and adds them to the filelist.  Then return the worklist.
854	 */
855	if (*files == NULL) {
856		expand_globs(filelist, globlist);
857		free_clist(globlist);
858		if (defconf != NULL)
859			free_entry(defconf);
860		return (filelist);
861	}
862
863	/*
864	 * If newsyslog was given a specific list of files to process,
865	 * it may be that some of those files were not listed in any
866	 * config file.  Those unlisted files should get the default
867	 * rotation action.  First, create the default-rotation action
868	 * if none was found in a system config file.
869	 */
870	if (defconf == NULL) {
871		defconf = init_entry(DEFAULT_MARKER, NULL);
872		defconf->numlogs = 3;
873		defconf->trsize = 50;
874		defconf->permissions = S_IRUSR|S_IWUSR;
875	}
876
877	/*
878	 * If newsyslog was run with a list of specific filenames,
879	 * then create a new worklist which has only those files in
880	 * it, picking up the rotation-rules for those files from
881	 * the original filelist.
882	 *
883	 * XXX - Note that this will copy multiple rules for a single
884	 *	logfile, if multiple entries are an exact match for
885	 *	that file.  That matches the historic behavior, but do
886	 *	we want to continue to allow it?  If so, it should
887	 *	probably be handled more intelligently.
888	 */
889	cmdlist = malloc(sizeof(struct cflist));
890	if (cmdlist == NULL)
891		err(1, "malloc of cmdlist");
892	STAILQ_INIT(cmdlist);
893
894	for (given = files; *given; ++given) {
895		/*
896		 * First try to find exact-matches for this given file.
897		 */
898		gmatch = 0;
899		STAILQ_FOREACH(ent, filelist, cf_nextp) {
900			if (strcmp(ent->log, *given) == 0) {
901				gmatch++;
902				dupent = init_entry(*given, ent);
903				STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
904			}
905		}
906		if (gmatch) {
907			if (verbose > 2)
908				printf("\t+ Matched entry %s\n", *given);
909			continue;
910		}
911
912		/*
913		 * There was no exact-match for this given file, so look
914		 * for a "glob" entry which does match.
915		 */
916		gmatch = 0;
917		if (verbose > 2)
918			printf("\t+ Checking globs for %s\n", *given);
919		STAILQ_FOREACH(ent, globlist, cf_nextp) {
920			fnres = fnmatch(ent->log, *given, FNM_PATHNAME);
921			if (verbose > 2)
922				printf("\t+    = %d for pattern %s\n", fnres,
923				    ent->log);
924			if (fnres == 0) {
925				gmatch++;
926				dupent = init_entry(*given, ent);
927				/* This new entry is not a glob! */
928				dupent->flags &= ~CE_GLOB;
929				STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
930				/* Only allow a match to one glob-entry */
931				break;
932			}
933		}
934		if (gmatch) {
935			if (verbose > 2)
936				printf("\t+ Matched %s via %s\n", *given,
937				    ent->log);
938			continue;
939		}
940
941		/*
942		 * This given file was not found in any config file, so
943		 * add a worklist item based on the default entry.
944		 */
945		if (verbose > 2)
946			printf("\t+ No entry matched %s  (will use %s)\n",
947			    *given, DEFAULT_MARKER);
948		dupent = init_entry(*given, defconf);
949		/* Mark that it was *not* found in a config file */
950		dupent->def_cfg = 1;
951		STAILQ_INSERT_TAIL(cmdlist, dupent, cf_nextp);
952	}
953
954	/*
955	 * Free all the entries in the original work list, the list of
956	 * glob entries, and the default entry.
957	 */
958	free_clist(filelist);
959	free_clist(globlist);
960	free_entry(defconf);
961
962	/* And finally, return a worklist which matches the given files. */
963	return (cmdlist);
964}
965
966/*
967 * Expand the list of entries with filename patterns, and add all files
968 * which match those glob-entries onto the worklist.
969 */
970static void
971expand_globs(struct cflist *work_p, struct cflist *glob_p)
972{
973	int gmatch, gres;
974	size_t i;
975	char *mfname;
976	struct conf_entry *dupent, *ent, *globent;
977	glob_t pglob;
978	struct stat st_fm;
979
980	/*
981	 * The worklist contains all fully-specified (non-GLOB) names.
982	 *
983	 * Now expand the list of filename-pattern (GLOB) entries into
984	 * a second list, which (by definition) will only match files
985	 * that already exist.  Do not add a glob-related entry for any
986	 * file which already exists in the fully-specified list.
987	 */
988	STAILQ_FOREACH(globent, glob_p, cf_nextp) {
989		gres = glob(globent->log, GLOB_NOCHECK, NULL, &pglob);
990		if (gres != 0) {
991			warn("cannot expand pattern (%d): %s", gres,
992			    globent->log);
993			continue;
994		}
995
996		if (verbose > 2)
997			printf("\t+ Expanding pattern %s\n", globent->log);
998		for (i = 0; i < pglob.gl_matchc; i++) {
999			mfname = pglob.gl_pathv[i];
1000
1001			/* See if this file already has a specific entry. */
1002			gmatch = 0;
1003			STAILQ_FOREACH(ent, work_p, cf_nextp) {
1004				if (strcmp(mfname, ent->log) == 0) {
1005					gmatch++;
1006					break;
1007				}
1008			}
1009			if (gmatch)
1010				continue;
1011
1012			/* Make sure the named matched is a file. */
1013			gres = lstat(mfname, &st_fm);
1014			if (gres != 0) {
1015				/* Error on a file that glob() matched?!? */
1016				warn("Skipping %s - lstat() error", mfname);
1017				continue;
1018			}
1019			if (!S_ISREG(st_fm.st_mode)) {
1020				/* We only rotate files! */
1021				if (verbose > 2)
1022					printf("\t+  . skipping %s (!file)\n",
1023					    mfname);
1024				continue;
1025			}
1026
1027			if (verbose > 2)
1028				printf("\t+  . add file %s\n", mfname);
1029			dupent = init_entry(mfname, globent);
1030			/* This new entry is not a glob! */
1031			dupent->flags &= ~CE_GLOB;
1032
1033			/* Add to the worklist. */
1034			STAILQ_INSERT_TAIL(work_p, dupent, cf_nextp);
1035		}
1036		globfree(&pglob);
1037		if (verbose > 2)
1038			printf("\t+ Done with pattern %s\n", globent->log);
1039	}
1040}
1041
1042/*
1043 * Parse a configuration file and update a linked list of all the logs to
1044 * process.
1045 */
1046static void
1047parse_file(FILE *cf, struct cflist *work_p, struct cflist *glob_p,
1048    struct conf_entry **defconf_p, struct ilist *inclist)
1049{
1050	char line[BUFSIZ], *parse, *q;
1051	char *cp, *errline, *group;
1052	struct conf_entry *working;
1053	struct passwd *pwd;
1054	struct group *grp;
1055	glob_t pglob;
1056	int eol, ptm_opts, res, special;
1057	size_t i;
1058
1059	errline = NULL;
1060	while (fgets(line, BUFSIZ, cf)) {
1061		if ((line[0] == '\n') || (line[0] == '#') ||
1062		    (strlen(line) == 0))
1063			continue;
1064		if (errline != NULL)
1065			free(errline);
1066		errline = strdup(line);
1067		for (cp = line + 1; *cp != '\0'; cp++) {
1068			if (*cp != '#')
1069				continue;
1070			if (*(cp - 1) == '\\') {
1071				strcpy(cp - 1, cp);
1072				cp--;
1073				continue;
1074			}
1075			*cp = '\0';
1076			break;
1077		}
1078
1079		q = parse = missing_field(sob(line), errline);
1080		parse = son(line);
1081		if (!*parse)
1082			errx(1, "malformed line (missing fields):\n%s",
1083			    errline);
1084		*parse = '\0';
1085
1086		/*
1087		 * Allow people to set debug options via the config file.
1088		 * (NOTE: debug options are undocumented, and may disappear
1089		 * at any time, etc).
1090		 */
1091		if (strcasecmp(DEBUG_MARKER, q) == 0) {
1092			q = parse = missing_field(sob(parse + 1), errline);
1093			parse = son(parse);
1094			if (!*parse)
1095				warnx("debug line specifies no option:\n%s",
1096				    errline);
1097			else {
1098				*parse = '\0';
1099				parse_doption(q);
1100			}
1101			continue;
1102		} else if (strcasecmp(INCLUDE_MARKER, q) == 0) {
1103			if (verbose)
1104				printf("Found: %s", errline);
1105			q = parse = missing_field(sob(parse + 1), errline);
1106			parse = son(parse);
1107			if (!*parse) {
1108				warnx("include line missing argument:\n%s",
1109				    errline);
1110				continue;
1111			}
1112
1113			*parse = '\0';
1114
1115			if (isglobstr(q)) {
1116				res = glob(q, GLOB_NOCHECK, NULL, &pglob);
1117				if (res != 0) {
1118					warn("cannot expand pattern (%d): %s",
1119					    res, q);
1120					continue;
1121				}
1122
1123				if (verbose > 2)
1124					printf("\t+ Expanding pattern %s\n", q);
1125
1126				for (i = 0; i < pglob.gl_matchc; i++)
1127					add_to_queue(pglob.gl_pathv[i],
1128					    inclist);
1129				globfree(&pglob);
1130			} else
1131				add_to_queue(q, inclist);
1132			continue;
1133		}
1134
1135		special = 0;
1136		working = init_entry(q, NULL);
1137		if (strcasecmp(DEFAULT_MARKER, q) == 0) {
1138			special = 1;
1139			if (*defconf_p != NULL) {
1140				warnx("Ignoring duplicate entry for %s!", q);
1141				free_entry(working);
1142				continue;
1143			}
1144			*defconf_p = working;
1145		}
1146
1147		q = parse = missing_field(sob(parse + 1), errline);
1148		parse = son(parse);
1149		if (!*parse)
1150			errx(1, "malformed line (missing fields):\n%s",
1151			    errline);
1152		*parse = '\0';
1153		if ((group = strchr(q, ':')) != NULL ||
1154		    (group = strrchr(q, '.')) != NULL) {
1155			*group++ = '\0';
1156			if (*q) {
1157				if (!(isnumberstr(q))) {
1158					if ((pwd = getpwnam(q)) == NULL)
1159						errx(1,
1160				     "error in config file; unknown user:\n%s",
1161						    errline);
1162					working->uid = pwd->pw_uid;
1163				} else
1164					working->uid = atoi(q);
1165			} else
1166				working->uid = (uid_t)-1;
1167
1168			q = group;
1169			if (*q) {
1170				if (!(isnumberstr(q))) {
1171					if ((grp = getgrnam(q)) == NULL)
1172						errx(1,
1173				    "error in config file; unknown group:\n%s",
1174						    errline);
1175					working->gid = grp->gr_gid;
1176				} else
1177					working->gid = atoi(q);
1178			} else
1179				working->gid = (gid_t)-1;
1180
1181			q = parse = missing_field(sob(parse + 1), errline);
1182			parse = son(parse);
1183			if (!*parse)
1184				errx(1, "malformed line (missing fields):\n%s",
1185				    errline);
1186			*parse = '\0';
1187		} else {
1188			working->uid = (uid_t)-1;
1189			working->gid = (gid_t)-1;
1190		}
1191
1192		if (!sscanf(q, "%o", &working->permissions))
1193			errx(1, "error in config file; bad permissions:\n%s",
1194			    errline);
1195		if ((working->permissions & ~DEFFILEMODE) != 0) {
1196			warnx("File mode bits 0%o changed to 0%o in line:\n%s",
1197			    working->permissions,
1198			    working->permissions & DEFFILEMODE, errline);
1199			working->permissions &= DEFFILEMODE;
1200		}
1201
1202		q = parse = missing_field(sob(parse + 1), errline);
1203		parse = son(parse);
1204		if (!*parse)
1205			errx(1, "malformed line (missing fields):\n%s",
1206			    errline);
1207		*parse = '\0';
1208		if (!sscanf(q, "%d", &working->numlogs) || working->numlogs < 0)
1209			errx(1, "error in config file; bad value for count of logs to save:\n%s",
1210			    errline);
1211
1212		q = parse = missing_field(sob(parse + 1), errline);
1213		parse = son(parse);
1214		if (!*parse)
1215			errx(1, "malformed line (missing fields):\n%s",
1216			    errline);
1217		*parse = '\0';
1218		if (isdigitch(*q))
1219			working->trsize = atoi(q);
1220		else if (strcmp(q, "*") == 0)
1221			working->trsize = -1;
1222		else {
1223			warnx("Invalid value of '%s' for 'size' in line:\n%s",
1224			    q, errline);
1225			working->trsize = -1;
1226		}
1227
1228		working->flags = 0;
1229		working->compress = COMPRESS_NONE;
1230		q = parse = missing_field(sob(parse + 1), errline);
1231		parse = son(parse);
1232		eol = !*parse;
1233		*parse = '\0';
1234		{
1235			char *ep;
1236			u_long ul;
1237
1238			ul = strtoul(q, &ep, 10);
1239			if (ep == q)
1240				working->hours = 0;
1241			else if (*ep == '*')
1242				working->hours = -1;
1243			else if (ul > INT_MAX)
1244				errx(1, "interval is too large:\n%s", errline);
1245			else
1246				working->hours = ul;
1247
1248			if (*ep == '\0' || strcmp(ep, "*") == 0)
1249				goto no_trimat;
1250			if (*ep != '@' && *ep != '$')
1251				errx(1, "malformed interval/at:\n%s", errline);
1252
1253			working->flags |= CE_TRIMAT;
1254			working->trim_at = ptime_init(NULL);
1255			ptm_opts = PTM_PARSE_ISO8601;
1256			if (*ep == '$')
1257				ptm_opts = PTM_PARSE_DWM;
1258			ptm_opts |= PTM_PARSE_MATCHDOM;
1259			res = ptime_relparse(working->trim_at, ptm_opts,
1260			    ptimeget_secs(timenow), ep + 1);
1261			if (res == -2)
1262				errx(1, "nonexistent time for 'at' value:\n%s",
1263				    errline);
1264			else if (res < 0)
1265				errx(1, "malformed 'at' value:\n%s", errline);
1266		}
1267no_trimat:
1268
1269		if (eol)
1270			q = NULL;
1271		else {
1272			q = parse = sob(parse + 1);	/* Optional field */
1273			parse = son(parse);
1274			if (!*parse)
1275				eol = 1;
1276			*parse = '\0';
1277		}
1278
1279		for (; q && *q && !isspacech(*q); q++) {
1280			switch (tolowerch(*q)) {
1281			case 'b':
1282				working->flags |= CE_BINARY;
1283				break;
1284			case 'c':
1285				working->flags |= CE_CREATE;
1286				break;
1287			case 'd':
1288				working->flags |= CE_NODUMP;
1289				break;
1290			case 'g':
1291				working->flags |= CE_GLOB;
1292				break;
1293			case 'j':
1294				working->compress = COMPRESS_BZIP2;
1295				break;
1296			case 'n':
1297				working->flags |= CE_NOSIGNAL;
1298				break;
1299			case 'p':
1300				working->flags |= CE_PLAIN0;
1301				break;
1302			case 'r':
1303				working->flags |= CE_PID2CMD;
1304				break;
1305			case 't':
1306				working->flags |= CE_RFC5424;
1307				break;
1308			case 'u':
1309				working->flags |= CE_SIGNALGROUP;
1310				break;
1311			case 'w':
1312				/* Deprecated flag - keep for compatibility purposes */
1313				break;
1314			case 'x':
1315				working->compress = COMPRESS_XZ;
1316				break;
1317			case 'y':
1318				working->compress = COMPRESS_ZSTD;
1319				break;
1320			case 'z':
1321				working->compress = COMPRESS_GZIP;
1322				break;
1323			case '-':
1324				break;
1325			case 'f':	/* Used by OpenBSD for "CE_FOLLOW" */
1326			case 'm':	/* Used by OpenBSD for "CE_MONITOR" */
1327			default:
1328				errx(1, "illegal flag in config file -- %c",
1329				    *q);
1330			}
1331		}
1332
1333		if (eol)
1334			q = NULL;
1335		else {
1336			q = parse = sob(parse + 1);	/* Optional field */
1337			parse = son(parse);
1338			if (!*parse)
1339				eol = 1;
1340			*parse = '\0';
1341		}
1342
1343		working->pid_cmd_file = NULL;
1344		if (q && *q) {
1345			if (*q == '/')
1346				working->pid_cmd_file = strdup(q);
1347			else if (isalnum(*q))
1348				goto got_sig;
1349			else {
1350				errx(1,
1351			"illegal pid file or signal in config file:\n%s",
1352				    errline);
1353			}
1354		}
1355		if (eol)
1356			q = NULL;
1357		else {
1358			q = parse = sob(parse + 1);	/* Optional field */
1359			parse = son(parse);
1360			*parse = '\0';
1361		}
1362
1363		working->sig = SIGHUP;
1364		if (q && *q) {
1365got_sig:
1366			working->sig = parse_signal(q);
1367			if (working->sig < 1 || working->sig >= sys_nsig) {
1368				errx(1,
1369				    "illegal signal in config file:\n%s",
1370				    errline);
1371			}
1372		}
1373
1374		/*
1375		 * Finish figuring out what pid-file to use (if any) in
1376		 * later processing if this logfile needs to be rotated.
1377		 */
1378		if ((working->flags & CE_NOSIGNAL) == CE_NOSIGNAL) {
1379			/*
1380			 * This config-entry specified 'n' for nosignal,
1381			 * see if it also specified an explicit pid_cmd_file.
1382			 * This would be a pretty pointless combination.
1383			 */
1384			if (working->pid_cmd_file != NULL) {
1385				warnx("Ignoring '%s' because flag 'n' was specified in line:\n%s",
1386				    working->pid_cmd_file, errline);
1387				free(working->pid_cmd_file);
1388				working->pid_cmd_file = NULL;
1389			}
1390		} else if (working->pid_cmd_file == NULL) {
1391			/*
1392			 * This entry did not specify the 'n' flag, which
1393			 * means it should signal syslogd unless it had
1394			 * specified some other pid-file (and obviously the
1395			 * syslog pid-file will not be for a process-group).
1396			 * Also, we should only try to notify syslog if we
1397			 * are root.
1398			 */
1399			if (working->flags & CE_SIGNALGROUP) {
1400				warnx("Ignoring flag 'U' in line:\n%s",
1401				    errline);
1402				working->flags &= ~CE_SIGNALGROUP;
1403			}
1404			if (needroot)
1405				working->pid_cmd_file = strdup(path_syslogpid);
1406		}
1407
1408		/*
1409		 * Add this entry to the appropriate list of entries, unless
1410		 * it was some kind of special entry (eg: <default>).
1411		 */
1412		if (special) {
1413			;			/* Do not add to any list */
1414		} else if (working->flags & CE_GLOB) {
1415			STAILQ_INSERT_TAIL(glob_p, working, cf_nextp);
1416		} else {
1417			STAILQ_INSERT_TAIL(work_p, working, cf_nextp);
1418		}
1419	}
1420	if (errline != NULL)
1421		free(errline);
1422}
1423
1424static char *
1425missing_field(char *p, char *errline)
1426{
1427
1428	if (!p || !*p)
1429		errx(1, "missing field in config file:\n%s", errline);
1430	return (p);
1431}
1432
1433/*
1434 * In our sort we return it in the reverse of what qsort normally
1435 * would do, as we want the newest files first.  If we have two
1436 * entries with the same time we don't really care about order.
1437 *
1438 * Support function for qsort() in delete_oldest_timelog().
1439 */
1440static int
1441oldlog_entry_compare(const void *a, const void *b)
1442{
1443	const struct oldlog_entry *ola = a, *olb = b;
1444
1445	if (ola->t > olb->t)
1446		return (-1);
1447	else if (ola->t < olb->t)
1448		return (1);
1449	else
1450		return (0);
1451}
1452
1453/*
1454 * Check whether the file corresponding to dp is an archive of the logfile
1455 * logfname, based on the timefnamefmt format string. Return true and fill out
1456 * tm if this is the case; otherwise return false.
1457 */
1458static int
1459validate_old_timelog(int fd, const struct dirent *dp, const char *logfname,
1460    struct tm *tm)
1461{
1462	struct stat sb;
1463	size_t logfname_len;
1464	char *s;
1465	int c;
1466
1467	logfname_len = strlen(logfname);
1468
1469	if (dp->d_type != DT_REG) {
1470		/*
1471		 * Some filesystems (e.g. NFS) don't fill out the d_type field
1472		 * and leave it set to DT_UNKNOWN; in this case we must obtain
1473		 * the file type ourselves.
1474		 */
1475		if (dp->d_type != DT_UNKNOWN ||
1476		    fstatat(fd, dp->d_name, &sb, AT_SYMLINK_NOFOLLOW) != 0 ||
1477		    !S_ISREG(sb.st_mode))
1478			return (0);
1479	}
1480	/* Ignore everything but files with our logfile prefix. */
1481	if (strncmp(dp->d_name, logfname, logfname_len) != 0)
1482		return (0);
1483	/* Ignore the actual non-rotated logfile. */
1484	if (dp->d_namlen == logfname_len)
1485		return (0);
1486
1487	/*
1488	 * Make sure we created have found a logfile, so the
1489	 * postfix is valid, IE format is: '.<time>(.[bgx]z)?'.
1490	 */
1491	if (dp->d_name[logfname_len] != '.') {
1492		if (verbose)
1493			printf("Ignoring %s which has unexpected "
1494			    "extension '%s'\n", dp->d_name,
1495			    &dp->d_name[logfname_len]);
1496		return (0);
1497	}
1498	memset(tm, 0, sizeof(*tm));
1499	if ((s = strptime(&dp->d_name[logfname_len + 1],
1500	    timefnamefmt, tm)) == NULL) {
1501		/*
1502		 * We could special case "old" sequentially named logfiles here,
1503		 * but we do not as that would require special handling to
1504		 * decide which one was the oldest compared to "new" time based
1505		 * logfiles.
1506		 */
1507		if (verbose)
1508			printf("Ignoring %s which does not "
1509			    "match time format\n", dp->d_name);
1510		return (0);
1511	}
1512
1513	for (c = 0; c < COMPRESS_TYPES; c++)
1514		if (strcmp(s, compress_type[c].suffix) == 0)
1515			/* We're done. */
1516			return (1);
1517
1518	if (verbose)
1519		printf("Ignoring %s which has unexpected extension '%s'\n",
1520		    dp->d_name, s);
1521
1522	return (0);
1523}
1524
1525/*
1526 * Delete the oldest logfiles, when using time based filenames.
1527 */
1528static void
1529delete_oldest_timelog(const struct conf_entry *ent, const char *archive_dir)
1530{
1531	char *basebuf, *dirbuf, errbuf[80];
1532	const char *base, *dir;
1533	int dir_fd, i, logcnt, max_logcnt;
1534	struct oldlog_entry *oldlogs;
1535	struct dirent *dp;
1536	struct tm tm;
1537	DIR *dirp;
1538
1539	oldlogs = malloc(MAX_OLDLOGS * sizeof(struct oldlog_entry));
1540	max_logcnt = MAX_OLDLOGS;
1541	logcnt = 0;
1542
1543	if (archive_dir != NULL && archive_dir[0] != '\0') {
1544		dirbuf = NULL;
1545		dir = archive_dir;
1546	} else {
1547		if ((dirbuf = strdup(ent->log)) == NULL)
1548			err(1, "strdup()");
1549		dir = dirname(dirbuf);
1550	}
1551
1552	if ((basebuf = strdup(ent->log)) == NULL)
1553		err(1, "strdup()");
1554	base = basename(basebuf);
1555	if (strcmp(base, "/") == 0)
1556		errx(1, "Invalid log filename - became '/'");
1557
1558	if (verbose > 2)
1559		printf("Searching for old logs in %s\n", dir);
1560
1561	/* First we create a 'list' of all archived logfiles */
1562	if ((dirp = opendir(dir)) == NULL)
1563		err(1, "Cannot open log directory '%s'", dir);
1564	dir_fd = dirfd(dirp);
1565	while ((dp = readdir(dirp)) != NULL) {
1566		if (validate_old_timelog(dir_fd, dp, base, &tm) == 0)
1567			continue;
1568
1569		/*
1570		 * We should now have old an old rotated logfile, so
1571		 * add it to the 'list'.
1572		 */
1573		if ((oldlogs[logcnt].t = timegm(&tm)) == -1)
1574			err(1, "Could not convert time string to time value");
1575		if ((oldlogs[logcnt].fname = strdup(dp->d_name)) == NULL)
1576			err(1, "strdup()");
1577		logcnt++;
1578
1579		/*
1580		 * It is very unlikely we ever run out of space in the
1581		 * logfile array from the default size, but lets
1582		 * handle it anyway...
1583		 */
1584		if (logcnt >= max_logcnt) {
1585			max_logcnt *= 4;
1586			/* Detect integer overflow */
1587			if (max_logcnt < logcnt)
1588				errx(1, "Too many old logfiles found");
1589			oldlogs = realloc(oldlogs,
1590			    max_logcnt * sizeof(struct oldlog_entry));
1591			if (oldlogs == NULL)
1592				err(1, "realloc()");
1593		}
1594	}
1595
1596	/* Second, if needed we delete oldest archived logfiles */
1597	if (logcnt > 0 && logcnt >= ent->numlogs && ent->numlogs > 1) {
1598		oldlogs = realloc(oldlogs, logcnt *
1599		    sizeof(struct oldlog_entry));
1600		if (oldlogs == NULL)
1601			err(1, "realloc()");
1602
1603		/*
1604		 * We now sort the logs in the order of newest to
1605		 * oldest.  That way we can simply skip over the
1606		 * number of records we want to keep.
1607		 */
1608		qsort(oldlogs, logcnt, sizeof(struct oldlog_entry),
1609		    oldlog_entry_compare);
1610		for (i = ent->numlogs - 1; i < logcnt; i++) {
1611			if (noaction)
1612				printf("\trm -f %s/%s\n", dir,
1613				    oldlogs[i].fname);
1614			else if (unlinkat(dir_fd, oldlogs[i].fname, 0) != 0) {
1615				snprintf(errbuf, sizeof(errbuf),
1616				    "Could not delete old logfile '%s'",
1617				    oldlogs[i].fname);
1618				perror(errbuf);
1619			}
1620		}
1621	} else if (verbose > 1)
1622		printf("No old logs to delete for logfile %s\n", ent->log);
1623
1624	/* Third, cleanup */
1625	closedir(dirp);
1626	for (i = 0; i < logcnt; i++) {
1627		assert(oldlogs[i].fname != NULL);
1628		free(oldlogs[i].fname);
1629	}
1630	free(oldlogs);
1631	free(dirbuf);
1632	free(basebuf);
1633}
1634
1635/*
1636 * Generate a log filename, when using classic filenames.
1637 */
1638static void
1639gen_classiclog_fname(char *fname, size_t fname_sz, const char *archive_dir,
1640    const char *namepart, int numlogs_c)
1641{
1642
1643	if (archive_dir[0] != '\0')
1644		(void) snprintf(fname, fname_sz, "%s/%s.%d", archive_dir,
1645		    namepart, numlogs_c);
1646	else
1647		(void) snprintf(fname, fname_sz, "%s.%d", namepart, numlogs_c);
1648}
1649
1650/*
1651 * Delete a rotated logfile, when using classic filenames.
1652 */
1653static void
1654delete_classiclog(const char *archive_dir, const char *namepart, int numlog_c)
1655{
1656	char file1[MAXPATHLEN], zfile1[MAXPATHLEN];
1657	int c;
1658
1659	gen_classiclog_fname(file1, sizeof(file1), archive_dir, namepart,
1660	    numlog_c);
1661
1662	for (c = 0; c < COMPRESS_TYPES; c++) {
1663		(void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1,
1664		    compress_type[c].suffix);
1665		if (noaction)
1666			printf("\trm -f %s\n", zfile1);
1667		else
1668			(void) unlink(zfile1);
1669	}
1670}
1671
1672/*
1673 * Only add to the queue if the file hasn't already been added. This is
1674 * done to prevent circular include loops.
1675 */
1676static void
1677add_to_queue(const char *fname, struct ilist *inclist)
1678{
1679	struct include_entry *inc;
1680
1681	STAILQ_FOREACH(inc, inclist, inc_nextp) {
1682		if (strcmp(fname, inc->file) == 0) {
1683			warnx("duplicate include detected: %s", fname);
1684			return;
1685		}
1686	}
1687
1688	inc = malloc(sizeof(struct include_entry));
1689	if (inc == NULL)
1690		err(1, "malloc of inc");
1691	inc->file = strdup(fname);
1692
1693	if (verbose > 2)
1694		printf("\t+ Adding %s to the processing queue.\n", fname);
1695
1696	STAILQ_INSERT_TAIL(inclist, inc, inc_nextp);
1697}
1698
1699/*
1700 * Search for logfile and return its compression suffix (if supported)
1701 * The suffix detection is first-match in the order of compress_types
1702 *
1703 * Note: if logfile without suffix exists (uncompressed, COMPRESS_NONE)
1704 * a zero-length string is returned
1705 */
1706static const char *
1707get_logfile_suffix(const char *logfile)
1708{
1709	struct stat st;
1710	char zfile[MAXPATHLEN];
1711	int c;
1712
1713	for (c = 0; c < COMPRESS_TYPES; c++) {
1714		(void) strlcpy(zfile, logfile, MAXPATHLEN);
1715		(void) strlcat(zfile, compress_type[c].suffix, MAXPATHLEN);
1716		if (lstat(zfile, &st) == 0)
1717			return (compress_type[c].suffix);
1718	}
1719	return (NULL);
1720}
1721
1722static fk_entry
1723do_rotate(const struct conf_entry *ent)
1724{
1725	char dirpart[MAXPATHLEN], namepart[MAXPATHLEN];
1726	char file1[MAXPATHLEN], file2[MAXPATHLEN];
1727	char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN];
1728	const char *logfile_suffix;
1729	char datetimestr[30];
1730	int flags, numlogs_c;
1731	fk_entry free_or_keep;
1732	struct sigwork_entry *swork;
1733	struct stat st;
1734	struct tm tm;
1735	time_t now;
1736
1737	flags = ent->flags;
1738	free_or_keep = FREE_ENT;
1739
1740	if (archtodir) {
1741		char *p;
1742
1743		/* build complete name of archive directory into dirpart */
1744		if (*archdirname == '/') {	/* absolute */
1745			strlcpy(dirpart, archdirname, sizeof(dirpart));
1746		} else {	/* relative */
1747			/* get directory part of logfile */
1748			strlcpy(dirpart, ent->log, sizeof(dirpart));
1749			if ((p = strrchr(dirpart, '/')) == NULL)
1750				dirpart[0] = '\0';
1751			else
1752				*(p + 1) = '\0';
1753			strlcat(dirpart, archdirname, sizeof(dirpart));
1754		}
1755
1756		/* check if archive directory exists, if not, create it */
1757		if (lstat(dirpart, &st))
1758			createdir(ent, dirpart);
1759
1760		/* get filename part of logfile */
1761		if ((p = strrchr(ent->log, '/')) == NULL)
1762			strlcpy(namepart, ent->log, sizeof(namepart));
1763		else
1764			strlcpy(namepart, p + 1, sizeof(namepart));
1765	} else {
1766		/*
1767		 * Tell utility functions we are not using an archive
1768		 * dir.
1769		 */
1770		dirpart[0] = '\0';
1771		strlcpy(namepart, ent->log, sizeof(namepart));
1772	}
1773
1774	/* Delete old logs */
1775	if (timefnamefmt != NULL)
1776		delete_oldest_timelog(ent, dirpart);
1777	else {
1778		/*
1779		 * Handle cleaning up after legacy newsyslog where we
1780		 * kept ent->numlogs + 1 files.  This code can go away
1781		 * at some point in the future.
1782		 */
1783		delete_classiclog(dirpart, namepart, ent->numlogs);
1784
1785		if (ent->numlogs > 0)
1786			delete_classiclog(dirpart, namepart, ent->numlogs - 1);
1787
1788	}
1789
1790	if (timefnamefmt != NULL) {
1791		/* If time functions fails we can't really do any sensible */
1792		if (time(&now) == (time_t)-1 ||
1793		    localtime_r(&now, &tm) == NULL)
1794			bzero(&tm, sizeof(tm));
1795
1796		strftime(datetimestr, sizeof(datetimestr), timefnamefmt, &tm);
1797		if (archtodir)
1798			(void) snprintf(file1, sizeof(file1), "%s/%s.%s",
1799			    dirpart, namepart, datetimestr);
1800		else
1801			(void) snprintf(file1, sizeof(file1), "%s.%s",
1802			    ent->log, datetimestr);
1803
1804		/* Don't run the code to move down logs */
1805		numlogs_c = -1;
1806	} else {
1807		gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
1808		    ent->numlogs - 1);
1809		numlogs_c = ent->numlogs - 2;		/* copy for countdown */
1810	}
1811
1812	/* Move down log files */
1813	for (; numlogs_c >= 0; numlogs_c--) {
1814		(void) strlcpy(file2, file1, sizeof(file2));
1815
1816		gen_classiclog_fname(file1, sizeof(file1), dirpart, namepart,
1817		    numlogs_c);
1818
1819		logfile_suffix = get_logfile_suffix(file1);
1820		if (logfile_suffix == NULL)
1821			continue;
1822		(void) strlcpy(zfile1, file1, MAXPATHLEN);
1823		(void) strlcpy(zfile2, file2, MAXPATHLEN);
1824		(void) strlcat(zfile1, logfile_suffix, MAXPATHLEN);
1825		(void) strlcat(zfile2, logfile_suffix, MAXPATHLEN);
1826
1827		if (noaction)
1828			printf("\tmv %s %s\n", zfile1, zfile2);
1829		else {
1830			/* XXX - Ought to be checking for failure! */
1831			(void)rename(zfile1, zfile2);
1832			change_attrs(zfile2, ent);
1833			if (ent->compress && !strlen(logfile_suffix)) {
1834				/* compress old rotation */
1835				struct zipwork_entry zwork;
1836
1837				memset(&zwork, 0, sizeof(zwork));
1838				zwork.zw_conf = ent;
1839				zwork.zw_fsize = sizefile(zfile2);
1840				strcpy(zwork.zw_fname, zfile2);
1841				do_zipwork(&zwork);
1842			}
1843		}
1844	}
1845
1846	if (ent->numlogs > 0) {
1847		if (noaction) {
1848			/*
1849			 * Note that savelog() may succeed with using link()
1850			 * for the archtodir case, but there is no good way
1851			 * of knowing if it will when doing "noaction", so
1852			 * here we claim that it will have to do a copy...
1853			 */
1854			if (archtodir)
1855				printf("\tcp %s %s\n", ent->log, file1);
1856			else
1857				printf("\tln %s %s\n", ent->log, file1);
1858			printf("\ttouch %s\t\t"
1859			    "# Update mtime for 'when'-interval processing\n",
1860			    file1);
1861		} else {
1862			if (!(flags & CE_BINARY)) {
1863				/* Report the trimming to the old log */
1864				log_trim(ent->log, ent);
1865			}
1866			savelog(ent->log, file1);
1867			/*
1868			 * Interval-based rotations are done using the mtime of
1869			 * the most recently archived log, so make sure it gets
1870			 * updated during a rotation.
1871			 */
1872			utimes(file1, NULL);
1873		}
1874		change_attrs(file1, ent);
1875	}
1876
1877	/* Create the new log file and move it into place */
1878	if (noaction)
1879		printf("Start new log...\n");
1880	createlog(ent);
1881
1882	/*
1883	 * Save all signalling and file-compression to be done after log
1884	 * files from all entries have been rotated.  This way any one
1885	 * process will not be sent the same signal multiple times when
1886	 * multiple log files had to be rotated.
1887	 */
1888	swork = NULL;
1889	if (ent->pid_cmd_file != NULL)
1890		swork = save_sigwork(ent);
1891	if (ent->numlogs > 0 && ent->compress > COMPRESS_NONE) {
1892		if (!(ent->flags & CE_PLAIN0) ||
1893		    strcmp(&file1[strlen(file1) - 2], ".0") != 0) {
1894			/*
1895			 * The zipwork_entry will include a pointer to this
1896			 * conf_entry, so the conf_entry should not be freed.
1897			 */
1898			free_or_keep = KEEP_ENT;
1899			save_zipwork(ent, swork, ent->fsize, file1);
1900		}
1901	}
1902
1903	return (free_or_keep);
1904}
1905
1906static void
1907do_sigwork(struct sigwork_entry *swork)
1908{
1909	struct sigwork_entry *nextsig;
1910	int kres, secs;
1911	char *tmp;
1912
1913	if (swork->sw_runcmd == 0 && (!(swork->sw_pidok) || swork->sw_pid == 0))
1914		return;			/* no work to do... */
1915
1916	/*
1917	 * If nosignal (-s) was specified, then do not signal any process.
1918	 * Note that a nosignal request triggers a warning message if the
1919	 * rotated logfile needs to be compressed, *unless* -R was also
1920	 * specified.  We assume that an `-sR' request came from a process
1921	 * which writes to the logfile, and as such, we assume that process
1922	 * has already made sure the logfile is not presently in use.  This
1923	 * just sets swork->sw_pidok to a special value, and do_zipwork
1924	 * will print any necessary warning(s).
1925	 */
1926	if (nosignal) {
1927		if (!rotatereq)
1928			swork->sw_pidok = -1;
1929		return;
1930	}
1931
1932	/*
1933	 * Compute the pause between consecutive signals.  Use a longer
1934	 * sleep time if we will be sending two signals to the same
1935	 * daemon or process-group.
1936	 */
1937	secs = 0;
1938	nextsig = SLIST_NEXT(swork, sw_nextp);
1939	if (nextsig != NULL) {
1940		if (swork->sw_pid == nextsig->sw_pid)
1941			secs = 10;
1942		else
1943			secs = 1;
1944	}
1945
1946	if (noaction) {
1947		if (swork->sw_runcmd)
1948			printf("\tsh -c '%s %d'\n", swork->sw_fname,
1949			    swork->sw_signum);
1950		else {
1951			printf("\tkill -%d %d \t\t# %s\n", swork->sw_signum,
1952			    (int)swork->sw_pid, swork->sw_fname);
1953			if (secs > 0)
1954				printf("\tsleep %d\n", secs);
1955		}
1956		return;
1957	}
1958
1959	if (swork->sw_runcmd) {
1960		asprintf(&tmp, "%s %d", swork->sw_fname, swork->sw_signum);
1961		if (tmp == NULL) {
1962			warn("can't allocate memory to run %s",
1963			    swork->sw_fname);
1964			return;
1965		}
1966		if (verbose)
1967			printf("Run command: %s\n", tmp);
1968		kres = system(tmp);
1969		if (kres) {
1970			warnx("%s: returned non-zero exit code: %d",
1971			    tmp, kres);
1972		}
1973		free(tmp);
1974		return;
1975	}
1976
1977	kres = kill(swork->sw_pid, swork->sw_signum);
1978	if (kres != 0) {
1979		/*
1980		 * Assume that "no such process" (ESRCH) is something
1981		 * to warn about, but is not an error.  Presumably the
1982		 * process which writes to the rotated log file(s) is
1983		 * gone, in which case we should have no problem with
1984		 * compressing the rotated log file(s).
1985		 */
1986		if (errno != ESRCH)
1987			swork->sw_pidok = 0;
1988		warn("can't notify %s, pid %d = %s", swork->sw_pidtype,
1989		    (int)swork->sw_pid, swork->sw_fname);
1990	} else {
1991		if (verbose)
1992			printf("Notified %s pid %d = %s\n", swork->sw_pidtype,
1993			    (int)swork->sw_pid, swork->sw_fname);
1994		if (secs > 0) {
1995			if (verbose)
1996				printf("Pause %d second(s) between signals\n",
1997				    secs);
1998			sleep(secs);
1999		}
2000	}
2001}
2002
2003static void
2004do_zipwork(struct zipwork_entry *zwork)
2005{
2006	const struct compress_types *ct;
2007	struct sbuf *command;
2008	pid_t pidzip, wpid;
2009	int c, errsav, fcount, zstatus;
2010	const char **args, *pgm_name, *pgm_path;
2011	char *zresult;
2012
2013	assert(zwork != NULL);
2014	assert(zwork->zw_conf != NULL);
2015	assert(zwork->zw_conf->compress > COMPRESS_NONE);
2016	assert(zwork->zw_conf->compress < COMPRESS_TYPES);
2017
2018	if (zwork->zw_swork != NULL && zwork->zw_swork->sw_runcmd == 0 &&
2019	    zwork->zw_swork->sw_pidok <= 0) {
2020		warnx(
2021		    "log %s not compressed because daemon(s) not notified",
2022		    zwork->zw_fname);
2023		change_attrs(zwork->zw_fname, zwork->zw_conf);
2024		return;
2025	}
2026
2027	ct = &compress_type[zwork->zw_conf->compress];
2028
2029	/*
2030	 * execv will be called with the array [ program, flags ... ,
2031	 * filename, NULL ] so allocate nflags+3 elements for the array.
2032	 */
2033	args = calloc(ct->nflags + 3, sizeof(*args));
2034	if (args == NULL)
2035		err(1, "calloc");
2036
2037	pgm_path = ct->path;
2038	pgm_name = strrchr(pgm_path, '/');
2039	if (pgm_name == NULL)
2040		pgm_name = pgm_path;
2041	else
2042		pgm_name++;
2043
2044	/* Build the argument array. */
2045	args[0] = pgm_name;
2046	for (c = 0; c < ct->nflags; c++)
2047		args[c + 1] = ct->flags[c];
2048	args[c + 1] = zwork->zw_fname;
2049
2050	/* Also create a space-delimited version if we need to print it. */
2051	if ((command = sbuf_new_auto()) == NULL)
2052		errx(1, "sbuf_new");
2053	sbuf_cpy(command, pgm_path);
2054	for (c = 1; args[c] != NULL; c++) {
2055		sbuf_putc(command, ' ');
2056		sbuf_cat(command, args[c]);
2057	}
2058	if (sbuf_finish(command) == -1)
2059		err(1, "sbuf_finish");
2060
2061	/* Determine the filename of the compressed file. */
2062	asprintf(&zresult, "%s%s", zwork->zw_fname, ct->suffix);
2063	if (zresult == NULL)
2064		errx(1, "asprintf");
2065
2066	if (verbose)
2067		printf("Executing: %s\n", sbuf_data(command));
2068
2069	if (noaction) {
2070		printf("\t%s %s\n", pgm_name, zwork->zw_fname);
2071		change_attrs(zresult, zwork->zw_conf);
2072		goto out;
2073	}
2074
2075	fcount = 1;
2076	pidzip = fork();
2077	while (pidzip < 0) {
2078		/*
2079		 * The fork failed.  If the failure was due to a temporary
2080		 * problem, then wait a short time and try it again.
2081		 */
2082		errsav = errno;
2083		warn("fork() for `%s %s'", pgm_name, zwork->zw_fname);
2084		if (errsav != EAGAIN || fcount > 5)
2085			errx(1, "Exiting...");
2086		sleep(fcount * 12);
2087		fcount++;
2088		pidzip = fork();
2089	}
2090	if (!pidzip) {
2091		/* The child process executes the compression command */
2092		execv(pgm_path, __DECONST(char *const*, args));
2093		err(1, "execv(`%s')", sbuf_data(command));
2094	}
2095
2096	wpid = waitpid(pidzip, &zstatus, 0);
2097	if (wpid == -1) {
2098		/* XXX - should this be a fatal error? */
2099		warn("%s: waitpid(%d)", pgm_path, pidzip);
2100		goto out;
2101	}
2102	if (!WIFEXITED(zstatus)) {
2103		warnx("`%s' did not terminate normally", sbuf_data(command));
2104		goto out;
2105	}
2106	if (WEXITSTATUS(zstatus)) {
2107		warnx("`%s' terminated with a non-zero status (%d)",
2108		    sbuf_data(command), WEXITSTATUS(zstatus));
2109		goto out;
2110	}
2111
2112	/* Compression was successful, set file attributes on the result. */
2113	change_attrs(zresult, zwork->zw_conf);
2114
2115out:
2116	sbuf_delete(command);
2117	free(args);
2118	free(zresult);
2119}
2120
2121/*
2122 * Save information on any process we need to signal.  Any single
2123 * process may need to be sent different signal-values for different
2124 * log files, but usually a single signal-value will cause the process
2125 * to close and re-open all of its log files.
2126 */
2127static struct sigwork_entry *
2128save_sigwork(const struct conf_entry *ent)
2129{
2130	struct sigwork_entry *sprev, *stmp;
2131	int ndiff;
2132	size_t tmpsiz;
2133
2134	sprev = NULL;
2135	ndiff = 1;
2136	SLIST_FOREACH(stmp, &swhead, sw_nextp) {
2137		ndiff = strcmp(ent->pid_cmd_file, stmp->sw_fname);
2138		if (ndiff > 0)
2139			break;
2140		if (ndiff == 0) {
2141			if (ent->sig == stmp->sw_signum)
2142				break;
2143			if (ent->sig > stmp->sw_signum) {
2144				ndiff = 1;
2145				break;
2146			}
2147		}
2148		sprev = stmp;
2149	}
2150	if (stmp != NULL && ndiff == 0)
2151		return (stmp);
2152
2153	tmpsiz = sizeof(struct sigwork_entry) + strlen(ent->pid_cmd_file) + 1;
2154	stmp = malloc(tmpsiz);
2155
2156	stmp->sw_runcmd = 0;
2157	/* If this is a command to run we just set the flag and run command */
2158	if (ent->flags & CE_PID2CMD) {
2159		stmp->sw_pid = -1;
2160		stmp->sw_pidok = 0;
2161		stmp->sw_runcmd = 1;
2162	} else {
2163		set_swpid(stmp, ent);
2164	}
2165	stmp->sw_signum = ent->sig;
2166	strcpy(stmp->sw_fname, ent->pid_cmd_file);
2167	if (sprev == NULL)
2168		SLIST_INSERT_HEAD(&swhead, stmp, sw_nextp);
2169	else
2170		SLIST_INSERT_AFTER(sprev, stmp, sw_nextp);
2171	return (stmp);
2172}
2173
2174/*
2175 * Save information on any file we need to compress.  We may see the same
2176 * file multiple times, so check the full list to avoid duplicates.  The
2177 * list itself is sorted smallest-to-largest, because that's the order we
2178 * want to compress the files.  If the partition is very low on disk space,
2179 * then the smallest files are the most likely to compress, and compressing
2180 * them first will free up more space for the larger files.
2181 */
2182static struct zipwork_entry *
2183save_zipwork(const struct conf_entry *ent, const struct sigwork_entry *swork,
2184    int zsize, const char *zipfname)
2185{
2186	struct zipwork_entry *zprev, *ztmp;
2187	int ndiff;
2188	size_t tmpsiz;
2189
2190	/* Compute the size if the caller did not know it. */
2191	if (zsize < 0)
2192		zsize = sizefile(zipfname);
2193
2194	zprev = NULL;
2195	ndiff = 1;
2196	SLIST_FOREACH(ztmp, &zwhead, zw_nextp) {
2197		ndiff = strcmp(zipfname, ztmp->zw_fname);
2198		if (ndiff == 0)
2199			break;
2200		if (zsize > ztmp->zw_fsize)
2201			zprev = ztmp;
2202	}
2203	if (ztmp != NULL && ndiff == 0)
2204		return (ztmp);
2205
2206	tmpsiz = sizeof(struct zipwork_entry) + strlen(zipfname) + 1;
2207	ztmp = malloc(tmpsiz);
2208	ztmp->zw_conf = ent;
2209	ztmp->zw_swork = swork;
2210	ztmp->zw_fsize = zsize;
2211	strcpy(ztmp->zw_fname, zipfname);
2212	if (zprev == NULL)
2213		SLIST_INSERT_HEAD(&zwhead, ztmp, zw_nextp);
2214	else
2215		SLIST_INSERT_AFTER(zprev, ztmp, zw_nextp);
2216	return (ztmp);
2217}
2218
2219/* Send a signal to the pid specified by pidfile */
2220static void
2221set_swpid(struct sigwork_entry *swork, const struct conf_entry *ent)
2222{
2223	FILE *f;
2224	long minok, maxok, rval;
2225	char *endp, *linep, line[BUFSIZ];
2226
2227	minok = MIN_PID;
2228	maxok = MAX_PID;
2229	swork->sw_pidok = 0;
2230	swork->sw_pid = 0;
2231	swork->sw_pidtype = "daemon";
2232	if (ent->flags & CE_SIGNALGROUP) {
2233		/*
2234		 * If we are expected to signal a process-group when
2235		 * rotating this logfile, then the value read in should
2236		 * be the negative of a valid process ID.
2237		 */
2238		minok = -MAX_PID;
2239		maxok = -MIN_PID;
2240		swork->sw_pidtype = "process-group";
2241	}
2242
2243	f = fopen(ent->pid_cmd_file, "r");
2244	if (f == NULL) {
2245		if (errno == ENOENT && enforcepid == 0) {
2246			/*
2247			 * Warn if the PID file doesn't exist, but do
2248			 * not consider it an error.  Most likely it
2249			 * means the process has been terminated,
2250			 * so it should be safe to rotate any log
2251			 * files that the process would have been using.
2252			 */
2253			swork->sw_pidok = 1;
2254			warnx("pid file doesn't exist: %s", ent->pid_cmd_file);
2255		} else
2256			warn("can't open pid file: %s", ent->pid_cmd_file);
2257		return;
2258	}
2259
2260	if (fgets(line, BUFSIZ, f) == NULL) {
2261		/*
2262		 * Warn if the PID file is empty, but do not consider
2263		 * it an error.  Most likely it means the process has
2264		 * has terminated, so it should be safe to rotate any
2265		 * log files that the process would have been using.
2266		 */
2267		if (feof(f) && enforcepid == 0) {
2268			swork->sw_pidok = 1;
2269			warnx("pid/cmd file is empty: %s", ent->pid_cmd_file);
2270		} else
2271			warn("can't read from pid file: %s", ent->pid_cmd_file);
2272		(void)fclose(f);
2273		return;
2274	}
2275	(void)fclose(f);
2276
2277	errno = 0;
2278	linep = line;
2279	while (*linep == ' ')
2280		linep++;
2281	rval = strtol(linep, &endp, 10);
2282	if (*endp != '\0' && !isspacech(*endp)) {
2283		warnx("pid file does not start with a valid number: %s",
2284		    ent->pid_cmd_file);
2285	} else if (rval < minok || rval > maxok) {
2286		warnx("bad value '%ld' for process number in %s",
2287		    rval, ent->pid_cmd_file);
2288		if (verbose)
2289			warnx("\t(expecting value between %ld and %ld)",
2290			    minok, maxok);
2291	} else {
2292		swork->sw_pidok = 1;
2293		swork->sw_pid = rval;
2294	}
2295
2296	return;
2297}
2298
2299/* Log the fact that the logs were turned over */
2300static int
2301log_trim(const char *logname, const struct conf_entry *log_ent)
2302{
2303	FILE *f;
2304	const char *xtra;
2305
2306	if ((f = fopen(logname, "a")) == NULL)
2307		return (-1);
2308	xtra = "";
2309	if (log_ent->def_cfg)
2310		xtra = " using <default> rule";
2311	if (log_ent->flags & CE_RFC5424) {
2312		if (log_ent->firstcreate) {
2313			fprintf(f, "<%d>1 %s %s newsyslog %d - - %s%s\n",
2314			    LOG_MAKEPRI(LOG_USER, LOG_INFO),
2315			    daytime_rfc5424, hostname, getpid(),
2316			    "logfile first created", xtra);
2317		} else if (log_ent->r_reason != NULL) {
2318			fprintf(f, "<%d>1 %s %s newsyslog %d - - %s%s%s\n",
2319			    LOG_MAKEPRI(LOG_USER, LOG_INFO),
2320			    daytime_rfc5424, hostname, getpid(),
2321			    "logfile turned over", log_ent->r_reason, xtra);
2322		} else {
2323			fprintf(f, "<%d>1 %s %s newsyslog %d - - %s%s\n",
2324			    LOG_MAKEPRI(LOG_USER, LOG_INFO),
2325			    daytime_rfc5424, hostname, getpid(),
2326			    "logfile turned over", xtra);
2327		}
2328	} else {
2329		if (log_ent->firstcreate)
2330			fprintf(f,
2331			    "%s %.*s newsyslog[%d]: logfile first created%s\n",
2332			    daytime, (int)hostname_shortlen, hostname, getpid(),
2333			    xtra);
2334		else if (log_ent->r_reason != NULL)
2335			fprintf(f,
2336			    "%s %.*s newsyslog[%d]: logfile turned over%s%s\n",
2337			    daytime, (int)hostname_shortlen, hostname, getpid(),
2338			    log_ent->r_reason, xtra);
2339		else
2340			fprintf(f,
2341			    "%s %.*s newsyslog[%d]: logfile turned over%s\n",
2342			    daytime, (int)hostname_shortlen, hostname, getpid(),
2343			    xtra);
2344	}
2345	if (fclose(f) == EOF)
2346		err(1, "log_trim: fclose");
2347	return (0);
2348}
2349
2350/* Return size in kilobytes of a file */
2351static int
2352sizefile(const char *file)
2353{
2354	struct stat sb;
2355
2356	if (stat(file, &sb) < 0)
2357		return (-1);
2358	return (kbytes(sb.st_size));
2359}
2360
2361/*
2362 * Return the mtime of the most recent archive of the logfile, using timestamp
2363 * based filenames.
2364 */
2365static time_t
2366mtime_old_timelog(const char *file)
2367{
2368	struct stat sb;
2369	struct tm tm;
2370	int dir_fd;
2371	time_t t;
2372	struct dirent *dp;
2373	DIR *dirp;
2374	char *logfname, *logfnamebuf, *dir, *dirbuf;
2375
2376	t = -1;
2377
2378	if ((dirbuf = strdup(file)) == NULL) {
2379		warn("strdup() of '%s'", file);
2380		return (t);
2381	}
2382	dir = dirname(dirbuf);
2383	if ((logfnamebuf = strdup(file)) == NULL) {
2384		warn("strdup() of '%s'", file);
2385		free(dirbuf);
2386		return (t);
2387	}
2388	logfname = basename(logfnamebuf);
2389	if (logfname[0] == '/') {
2390		warnx("Invalid log filename '%s'", logfname);
2391		goto out;
2392	}
2393
2394	if ((dirp = opendir(dir)) == NULL) {
2395		warn("Cannot open log directory '%s'", dir);
2396		goto out;
2397	}
2398	dir_fd = dirfd(dirp);
2399	/* Open the archive dir and find the most recent archive of logfname. */
2400	while ((dp = readdir(dirp)) != NULL) {
2401		if (validate_old_timelog(dir_fd, dp, logfname, &tm) == 0)
2402			continue;
2403
2404		if (fstatat(dir_fd, dp->d_name, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
2405			warn("Cannot stat '%s'", file);
2406			continue;
2407		}
2408		if (t < sb.st_mtime)
2409			t = sb.st_mtime;
2410	}
2411	closedir(dirp);
2412
2413out:
2414	free(dirbuf);
2415	free(logfnamebuf);
2416	return (t);
2417}
2418
2419/* Return the age in hours of the most recent archive of the logfile. */
2420static int
2421age_old_log(const char *file)
2422{
2423	struct stat sb;
2424	const char *logfile_suffix;
2425	static unsigned int suffix_maxlen = 0;
2426	char *tmp;
2427	size_t tmpsiz;
2428	time_t mtime;
2429	int c;
2430
2431	if (suffix_maxlen == 0) {
2432		for (c = 0; c < COMPRESS_TYPES; c++)
2433			suffix_maxlen = MAX(suffix_maxlen,
2434			    strlen(compress_type[c].suffix));
2435	}
2436
2437	tmpsiz = MAXPATHLEN + sizeof(".0") + suffix_maxlen + 1;
2438	tmp = alloca(tmpsiz);
2439
2440	if (archtodir) {
2441		char *p;
2442
2443		/* build name of archive directory into tmp */
2444		if (*archdirname == '/') {	/* absolute */
2445			strlcpy(tmp, archdirname, tmpsiz);
2446		} else {	/* relative */
2447			/* get directory part of logfile */
2448			strlcpy(tmp, file, tmpsiz);
2449			if ((p = strrchr(tmp, '/')) == NULL)
2450				tmp[0] = '\0';
2451			else
2452				*(p + 1) = '\0';
2453			strlcat(tmp, archdirname, tmpsiz);
2454		}
2455
2456		strlcat(tmp, "/", tmpsiz);
2457
2458		/* get filename part of logfile */
2459		if ((p = strrchr(file, '/')) == NULL)
2460			strlcat(tmp, file, tmpsiz);
2461		else
2462			strlcat(tmp, p + 1, tmpsiz);
2463	} else {
2464		(void) strlcpy(tmp, file, tmpsiz);
2465	}
2466
2467	if (timefnamefmt != NULL) {
2468		mtime = mtime_old_timelog(tmp);
2469		if (mtime == -1)
2470			return (-1);
2471	} else {
2472		strlcat(tmp, ".0", tmpsiz);
2473		logfile_suffix = get_logfile_suffix(tmp);
2474		if (logfile_suffix == NULL)
2475			return (-1);
2476		(void) strlcat(tmp, logfile_suffix, tmpsiz);
2477		if (stat(tmp, &sb) < 0)
2478			return (-1);
2479		mtime = sb.st_mtime;
2480	}
2481
2482	return ((int)(ptimeget_secs(timenow) - mtime + 1800) / 3600);
2483}
2484
2485/* Skip Over Blanks */
2486static char *
2487sob(char *p)
2488{
2489	while (p && *p && isspace(*p))
2490		p++;
2491	return (p);
2492}
2493
2494/* Skip Over Non-Blanks */
2495static char *
2496son(char *p)
2497{
2498	while (p && *p && !isspace(*p))
2499		p++;
2500	return (p);
2501}
2502
2503/* Check if string is actually a number */
2504static int
2505isnumberstr(const char *string)
2506{
2507	while (*string) {
2508		if (!isdigitch(*string++))
2509			return (0);
2510	}
2511	return (1);
2512}
2513
2514/* Check if string contains a glob */
2515static int
2516isglobstr(const char *string)
2517{
2518	char chr;
2519
2520	while ((chr = *string++)) {
2521		if (chr == '*' || chr == '?' || chr == '[')
2522			return (1);
2523	}
2524	return (0);
2525}
2526
2527/*
2528 * Save the active log file under a new name.  A link to the new name
2529 * is the quick-and-easy way to do this.  If that fails (which it will
2530 * if the destination is on another partition), then make a copy of
2531 * the file to the new location.
2532 */
2533static void
2534savelog(char *from, char *to)
2535{
2536	FILE *src, *dst;
2537	int c, res;
2538
2539	res = link(from, to);
2540	if (res == 0)
2541		return;
2542
2543	if ((src = fopen(from, "r")) == NULL)
2544		err(1, "can't fopen %s for reading", from);
2545	if ((dst = fopen(to, "w")) == NULL)
2546		err(1, "can't fopen %s for writing", to);
2547
2548	while ((c = getc(src)) != EOF) {
2549		if ((putc(c, dst)) == EOF)
2550			err(1, "error writing to %s", to);
2551	}
2552
2553	if (ferror(src))
2554		err(1, "error reading from %s", from);
2555	if ((fclose(src)) != 0)
2556		err(1, "can't fclose %s", to);
2557	if ((fclose(dst)) != 0)
2558		err(1, "can't fclose %s", from);
2559}
2560
2561/* create one or more directory components of a path */
2562static void
2563createdir(const struct conf_entry *ent, char *dirpart)
2564{
2565	int res;
2566	char *s, *d;
2567	char mkdirpath[MAXPATHLEN];
2568	struct stat st;
2569
2570	s = dirpart;
2571	d = mkdirpath;
2572
2573	for (;;) {
2574		*d++ = *s++;
2575		if (*s != '/' && *s != '\0')
2576			continue;
2577		*d = '\0';
2578		res = lstat(mkdirpath, &st);
2579		if (res != 0) {
2580			if (noaction) {
2581				printf("\tmkdir %s\n", mkdirpath);
2582			} else {
2583				res = mkdir(mkdirpath, 0755);
2584				if (res != 0)
2585					err(1, "Error on mkdir(\"%s\") for -a",
2586					    mkdirpath);
2587			}
2588		}
2589		if (*s == '\0')
2590			break;
2591	}
2592	if (verbose) {
2593		if (ent->firstcreate)
2594			printf("Created directory '%s' for new %s\n",
2595			    dirpart, ent->log);
2596		else
2597			printf("Created directory '%s' for -a\n", dirpart);
2598	}
2599}
2600
2601/*
2602 * Create a new log file, destroying any currently-existing version
2603 * of the log file in the process.  If the caller wants a backup copy
2604 * of the file to exist, they should call 'link(logfile,logbackup)'
2605 * before calling this routine.
2606 */
2607void
2608createlog(const struct conf_entry *ent)
2609{
2610	int fd, failed;
2611	struct stat st;
2612	char *realfile, *slash, tempfile[MAXPATHLEN];
2613
2614	fd = -1;
2615	realfile = ent->log;
2616
2617	/*
2618	 * If this log file is being created for the first time (-C option),
2619	 * then it may also be true that the parent directory does not exist
2620	 * yet.  Check, and create that directory if it is missing.
2621	 */
2622	if (ent->firstcreate) {
2623		strlcpy(tempfile, realfile, sizeof(tempfile));
2624		slash = strrchr(tempfile, '/');
2625		if (slash != NULL) {
2626			*slash = '\0';
2627			failed = stat(tempfile, &st);
2628			if (failed && errno != ENOENT)
2629				err(1, "Error on stat(%s)", tempfile);
2630			if (failed)
2631				createdir(ent, tempfile);
2632			else if (!S_ISDIR(st.st_mode))
2633				errx(1, "%s exists but is not a directory",
2634				    tempfile);
2635		}
2636	}
2637
2638	/*
2639	 * First create an unused filename, so it can be chown'ed and
2640	 * chmod'ed before it is moved into the real location.  mkstemp
2641	 * will create the file mode=600 & owned by us.  Note that all
2642	 * temp files will have a suffix of '.z<something>'.
2643	 */
2644	strlcpy(tempfile, realfile, sizeof(tempfile));
2645	strlcat(tempfile, ".zXXXXXX", sizeof(tempfile));
2646	if (noaction)
2647		printf("\tmktemp %s\n", tempfile);
2648	else {
2649		fd = mkstemp(tempfile);
2650		if (fd < 0)
2651			err(1, "can't mkstemp logfile %s", tempfile);
2652
2653		/*
2654		 * Add status message to what will become the new log file.
2655		 */
2656		if (!(ent->flags & CE_BINARY)) {
2657			if (log_trim(tempfile, ent))
2658				err(1, "can't add status message to log");
2659		}
2660	}
2661
2662	/* Change the owner/group, if we are supposed to */
2663	if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) {
2664		if (noaction)
2665			printf("\tchown %u:%u %s\n", ent->uid, ent->gid,
2666			    tempfile);
2667		else {
2668			failed = fchown(fd, ent->uid, ent->gid);
2669			if (failed)
2670				err(1, "can't fchown temp file %s", tempfile);
2671		}
2672	}
2673
2674	/* Turn on NODUMP if it was requested in the config-file. */
2675	if (ent->flags & CE_NODUMP) {
2676		if (noaction)
2677			printf("\tchflags nodump %s\n", tempfile);
2678		else {
2679			failed = fchflags(fd, UF_NODUMP);
2680			if (failed) {
2681				warn("log_trim: fchflags(NODUMP)");
2682			}
2683		}
2684	}
2685
2686	/*
2687	 * Note that if the real logfile still exists, and if the call
2688	 * to rename() fails, then "neither the old file nor the new
2689	 * file shall be changed or created" (to quote the standard).
2690	 * If the call succeeds, then the file will be replaced without
2691	 * any window where some other process might find that the file
2692	 * did not exist.
2693	 * XXX - ? It may be that for some error conditions, we could
2694	 *	retry by first removing the realfile and then renaming.
2695	 */
2696	if (noaction) {
2697		printf("\tchmod %o %s\n", ent->permissions, tempfile);
2698		printf("\tmv %s %s\n", tempfile, realfile);
2699	} else {
2700		failed = fchmod(fd, ent->permissions);
2701		if (failed)
2702			err(1, "can't fchmod temp file '%s'", tempfile);
2703		failed = rename(tempfile, realfile);
2704		if (failed)
2705			err(1, "can't mv %s to %s", tempfile, realfile);
2706	}
2707
2708	if (fd >= 0)
2709		close(fd);
2710}
2711
2712/*
2713 * Change the attributes of a given filename to what was specified in
2714 * the newsyslog.conf entry.  This routine is only called for files
2715 * that newsyslog expects that it has created, and thus it is a fatal
2716 * error if this routine finds that the file does not exist.
2717 */
2718static void
2719change_attrs(const char *fname, const struct conf_entry *ent)
2720{
2721	int failed;
2722
2723	if (noaction) {
2724		printf("\tchmod %o %s\n", ent->permissions, fname);
2725
2726		if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1)
2727			printf("\tchown %u:%u %s\n",
2728			    ent->uid, ent->gid, fname);
2729
2730		if (ent->flags & CE_NODUMP)
2731			printf("\tchflags nodump %s\n", fname);
2732		return;
2733	}
2734
2735	failed = chmod(fname, ent->permissions);
2736	if (failed) {
2737		if (errno != EPERM)
2738			err(1, "chmod(%s) in change_attrs", fname);
2739		warn("change_attrs couldn't chmod(%s)", fname);
2740	}
2741
2742	if (ent->uid != (uid_t)-1 || ent->gid != (gid_t)-1) {
2743		failed = chown(fname, ent->uid, ent->gid);
2744		if (failed)
2745			warn("can't chown %s", fname);
2746	}
2747
2748	if (ent->flags & CE_NODUMP) {
2749		failed = chflags(fname, UF_NODUMP);
2750		if (failed)
2751			warn("can't chflags %s NODUMP", fname);
2752	}
2753}
2754
2755/*
2756 * Parse a signal number or signal name. Returns the signal number parsed or -1
2757 * on failure.
2758 */
2759static int
2760parse_signal(const char *str)
2761{
2762	int sig, i;
2763	const char *errstr;
2764
2765	sig = strtonum(str, 1, sys_nsig - 1, &errstr);
2766
2767	if (errstr == NULL)
2768		return (sig);
2769	if (strncasecmp(str, "SIG", 3) == 0)
2770		str += 3;
2771
2772	for (i = 1; i < sys_nsig; i++) {
2773		if (strcasecmp(str, sys_signame[i]) == 0)
2774			return (i);
2775	}
2776
2777	return (-1);
2778}
2779