procstat_sigs.c revision 204880 
1/*-
2 * Copyright (c) 2010 Konstantin Belousov
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: head/usr.bin/procstat/procstat_sigs.c 204880 2010-03-08 20:45:52Z kib $
27 */
28
29#include <sys/param.h>
30#include <sys/sysctl.h>
31#include <sys/user.h>
32
33#include <ctype.h>
34#include <err.h>
35#include <errno.h>
36#include <signal.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40
41#include "procstat.h"
42
43static void
44procstat_print_signame(int sig)
45{
46	char name[12];
47	int i;
48
49	if (!nflag && sig < sys_nsig) {
50		strlcpy(name, sys_signame[sig], sizeof(name));
51		for (i = 0; name[i] != 0; i++)
52			name[i] = toupper(name[i]);
53		printf("%-7s ", name);
54	} else
55		printf("%-7d ", sig);
56}
57
58static void
59procstat_print_sig(const sigset_t *set, int sig, char flag)
60{
61
62	printf("%c", sigismember(set, sig) ? flag : '-');
63}
64
65void
66procstat_sigs(pid_t pid, struct kinfo_proc *kipp)
67{
68	int j;
69
70	if (!hflag)
71		printf("%5s %-16s %-7s %4s\n", "PID", "COMM", "SIG", "FLAGS");
72
73	for (j = 1; j <= _SIG_MAXSIG; j++) {
74		printf("%5d ", pid);
75		printf("%-16s ", kipp->ki_comm);
76		procstat_print_signame(j);
77		printf(" ");
78		procstat_print_sig(&kipp->ki_siglist, j, 'P');
79		procstat_print_sig(&kipp->ki_sigignore, j, 'I');
80		procstat_print_sig(&kipp->ki_sigcatch, j, 'C');
81		printf("\n");
82	}
83}
84
85void
86procstat_threads_sigs(pid_t pid, struct kinfo_proc *kipp)
87{
88	struct kinfo_proc *kip;
89	int error, name[4], j;
90	unsigned int i;
91	size_t len;
92
93	if (!hflag)
94		printf("%5s %6s %-16s %-7s %4s\n", "PID", "TID", "COMM",
95		     "SIG", "FLAGS");
96
97	/*
98	 * We need to re-query for thread information, so don't use *kipp.
99	 */
100	name[0] = CTL_KERN;
101	name[1] = KERN_PROC;
102	name[2] = KERN_PROC_PID | KERN_PROC_INC_THREAD;
103	name[3] = pid;
104
105	len = 0;
106	error = sysctl(name, 4, NULL, &len, NULL, 0);
107	if (error < 0 && errno != ESRCH) {
108		warn("sysctl: kern.proc.pid: %d", pid);
109		return;
110	}
111	if (error < 0)
112		return;
113
114	kip = malloc(len);
115	if (kip == NULL)
116		err(-1, "malloc");
117
118	if (sysctl(name, 4, kip, &len, NULL, 0) < 0) {
119		warn("sysctl: kern.proc.pid: %d", pid);
120		free(kip);
121		return;
122	}
123
124	kinfo_proc_sort(kip, len / sizeof(*kipp));
125	for (i = 0; i < len / sizeof(*kipp); i++) {
126		kipp = &kip[i];
127		for (j = 1; j <= _SIG_MAXSIG; j++) {
128			printf("%5d ", pid);
129			printf("%6d ", kipp->ki_tid);
130			printf("%-16s ", kipp->ki_comm);
131			procstat_print_signame(j);
132			printf(" ");
133			procstat_print_sig(&kipp->ki_siglist, j, 'P');
134			procstat_print_sig(&kipp->ki_sigmask, j, 'B');
135			printf("\n");
136		}
137	}
138	free(kip);
139}
140