procstat.c revision 310121 
1/*-
2 * Copyright (c) 2007, 2011 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/usr.bin/procstat/procstat.c 310121 2016-12-15 16:52:17Z vangyzen $
27 */
28
29#include <sys/param.h>
30#include <sys/sysctl.h>
31#include <sys/user.h>
32
33#include <err.h>
34#include <libprocstat.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <sysexits.h>
39#include <unistd.h>
40
41#include "procstat.h"
42
43static int aflag, bflag, cflag, eflag, fflag, iflag, jflag, kflag, lflag, rflag;
44static int sflag, tflag, vflag, xflag, Sflag;
45int	hflag, nflag, Cflag, Hflag;
46
47static void
48usage(void)
49{
50
51	fprintf(stderr, "usage: procstat [-CHhn] [-M core] [-N system] "
52	    "[-w interval] \n");
53	fprintf(stderr, "                [-b | -c | -e | -f | -i | -j | -k | "
54	    "-l | -r | -s | -S | -t | -v | -x]\n");
55	fprintf(stderr, "                [-a | pid | core ...]\n");
56	exit(EX_USAGE);
57}
58
59static void
60procstat(struct procstat *prstat, struct kinfo_proc *kipp)
61{
62
63	if (bflag)
64		procstat_bin(prstat, kipp);
65	else if (cflag)
66		procstat_args(prstat, kipp);
67	else if (eflag)
68		procstat_env(prstat, kipp);
69	else if (fflag)
70		procstat_files(prstat, kipp);
71	else if (iflag)
72		procstat_sigs(prstat, kipp);
73	else if (jflag)
74		procstat_threads_sigs(prstat, kipp);
75	else if (kflag)
76		procstat_kstack(prstat, kipp, kflag);
77	else if (lflag)
78		procstat_rlimit(prstat, kipp);
79	else if (rflag)
80		procstat_rusage(prstat, kipp);
81	else if (sflag)
82		procstat_cred(prstat, kipp);
83	else if (tflag)
84		procstat_threads(prstat, kipp);
85	else if (vflag)
86		procstat_vm(prstat, kipp);
87	else if (xflag)
88		procstat_auxv(prstat, kipp);
89	else if (Sflag)
90		procstat_cs(prstat, kipp);
91	else
92		procstat_basic(kipp);
93}
94
95/*
96 * Sort processes first by pid and then tid.
97 */
98static int
99kinfo_proc_compare(const void *a, const void *b)
100{
101	int i;
102
103	i = ((const struct kinfo_proc *)a)->ki_pid -
104	    ((const struct kinfo_proc *)b)->ki_pid;
105	if (i != 0)
106		return (i);
107	i = ((const struct kinfo_proc *)a)->ki_tid -
108	    ((const struct kinfo_proc *)b)->ki_tid;
109	return (i);
110}
111
112void
113kinfo_proc_sort(struct kinfo_proc *kipp, int count)
114{
115
116	qsort(kipp, count, sizeof(*kipp), kinfo_proc_compare);
117}
118
119const char *
120kinfo_proc_thread_name(const struct kinfo_proc *kipp)
121{
122	static char name[MAXCOMLEN+1];
123
124	strlcpy(name, kipp->ki_tdname, sizeof(name));
125	strlcat(name, kipp->ki_moretdname, sizeof(name));
126	if (name[0] == '\0' || strcmp(kipp->ki_comm, name) == 0) {
127		name[0] = '-';
128		name[1] = '\0';
129	}
130
131	return (name);
132}
133
134int
135main(int argc, char *argv[])
136{
137	int ch, interval, tmp;
138	int i;
139	struct kinfo_proc *p;
140	struct procstat *prstat, *cprstat;
141	long l;
142	pid_t pid;
143	char *dummy;
144	char *nlistf, *memf;
145	int cnt;
146
147	interval = 0;
148	memf = nlistf = NULL;
149	while ((ch = getopt(argc, argv, "CHN:M:abcefijklhrsStvw:x")) != -1) {
150		switch (ch) {
151		case 'C':
152			Cflag++;
153			break;
154
155		case 'H':
156			Hflag++;
157			break;
158
159		case 'M':
160			memf = optarg;
161			break;
162		case 'N':
163			nlistf = optarg;
164			break;
165		case 'S':
166			Sflag++;
167			break;
168		case 'a':
169			aflag++;
170			break;
171
172		case 'b':
173			bflag++;
174			break;
175
176		case 'c':
177			cflag++;
178			break;
179
180		case 'e':
181			eflag++;
182			break;
183
184		case 'f':
185			fflag++;
186			break;
187
188		case 'i':
189			iflag++;
190			break;
191
192		case 'j':
193			jflag++;
194			break;
195
196		case 'k':
197			kflag++;
198			break;
199
200		case 'l':
201			lflag++;
202			break;
203
204		case 'n':
205			nflag++;
206			break;
207
208		case 'h':
209			hflag++;
210			break;
211
212		case 'r':
213			rflag++;
214			break;
215
216		case 's':
217			sflag++;
218			break;
219
220		case 't':
221			tflag++;
222			break;
223
224		case 'v':
225			vflag++;
226			break;
227
228		case 'w':
229			l = strtol(optarg, &dummy, 10);
230			if (*dummy != '\0')
231				usage();
232			if (l < 1 || l > INT_MAX)
233				usage();
234			interval = l;
235			break;
236
237		case 'x':
238			xflag++;
239			break;
240
241		case '?':
242		default:
243			usage();
244		}
245
246	}
247	argc -= optind;
248	argv += optind;
249
250	/* We require that either 0 or 1 mode flags be set. */
251	tmp = bflag + cflag + eflag + fflag + iflag + jflag + (kflag ? 1 : 0) +
252	    lflag + rflag + sflag + tflag + vflag + xflag + Sflag;
253	if (!(tmp == 0 || tmp == 1))
254		usage();
255
256	/* We allow -k to be specified up to twice, but not more. */
257	if (kflag > 2)
258		usage();
259
260	/* Must specify either the -a flag or a list of pids. */
261	if (!(aflag == 1 && argc == 0) && !(aflag == 0 && argc > 0))
262		usage();
263
264	/* Only allow -C with -f. */
265	if (Cflag && !fflag)
266		usage();
267
268	if (memf != NULL)
269		prstat = procstat_open_kvm(nlistf, memf);
270	else
271		prstat = procstat_open_sysctl();
272	if (prstat == NULL)
273		errx(1, "procstat_open()");
274	do {
275		if (aflag) {
276			p = procstat_getprocs(prstat, KERN_PROC_PROC, 0, &cnt);
277			if (p == NULL)
278				errx(1, "procstat_getprocs()");
279			kinfo_proc_sort(p, cnt);
280			for (i = 0; i < cnt; i++) {
281				procstat(prstat, &p[i]);
282
283				/* Suppress header after first process. */
284				hflag = 1;
285			}
286			procstat_freeprocs(prstat, p);
287		}
288		for (i = 0; i < argc; i++) {
289			l = strtol(argv[i], &dummy, 10);
290			if (*dummy == '\0') {
291				if (l < 0)
292					usage();
293				pid = l;
294
295				p = procstat_getprocs(prstat, KERN_PROC_PID, pid, &cnt);
296				if (p == NULL)
297					errx(1, "procstat_getprocs()");
298				if (cnt != 0)
299					procstat(prstat, p);
300				procstat_freeprocs(prstat, p);
301			} else {
302				cprstat = procstat_open_core(argv[i]);
303				if (cprstat == NULL) {
304					warnx("procstat_open()");
305					continue;
306				}
307				p = procstat_getprocs(cprstat, KERN_PROC_PID,
308				    -1, &cnt);
309				if (p == NULL)
310					errx(1, "procstat_getprocs()");
311				if (cnt != 0)
312					procstat(cprstat, p);
313				procstat_freeprocs(cprstat, p);
314				procstat_close(cprstat);
315			}
316			/* Suppress header after first process. */
317			hflag = 1;
318		}
319		if (interval)
320			sleep(interval);
321	} while (interval);
322	procstat_close(prstat);
323	exit(0);
324}
325