1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2010 Konstantin Belousov
5 * Copyright (c) 2015 Allan Jude <allanjude@freebsd.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: stable/12/usr.bin/procstat/procstat_sigs.c 366418 2020-10-04 00:40:28Z kib $");
32
33 #include <sys/param.h>
34 #include <sys/sysctl.h>
35 #include <sys/user.h>
36
37 #include <ctype.h>
38 #include <err.h>
39 #include <errno.h>
40 #include <signal.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <libprocstat.h>
45
46 #include "procstat.h"
47
48 static void
procstat_print_signame(int sig)49 procstat_print_signame(int sig)
50 {
51 char name[12];
52 int i;
53
54 if ((procstat_opts & PS_OPT_SIGNUM) == 0 && sig < sys_nsig) {
55 strlcpy(name, sys_signame[sig], sizeof(name));
56 for (i = 0; name[i] != 0; i++)
57 name[i] = toupper(name[i]);
58 xo_emit("{d:signal/%-7s/%s} ", name);
59 xo_open_container(name);
60 } else {
61 xo_emit("{d:signal/%-7d/%d} ", sig);
62 snprintf(name, 12, "%d", sig);
63 xo_open_container(name);
64 }
65 }
66
67 static void
procstat_close_signame(int sig)68 procstat_close_signame(int sig)
69 {
70 char name[12];
71 int i;
72
73 if ((procstat_opts & PS_OPT_SIGNUM) == 0 && sig < sys_nsig) {
74 strlcpy(name, sys_signame[sig], sizeof(name));
75 for (i = 0; name[i] != 0; i++)
76 name[i] = toupper(name[i]);
77 xo_close_container(name);
78 } else {
79 snprintf(name, 12, "%d", sig);
80 xo_close_container(name);
81 }
82 }
83
84 static void
procstat_print_sig(const sigset_t * set,int sig,char flag)85 procstat_print_sig(const sigset_t *set, int sig, char flag)
86 {
87 xo_emit("{d:sigmember/%c}", sigismember(set, sig) ? flag : '-');
88 switch (flag) {
89 case 'B':
90 xo_emit("{en:mask/%s}", sigismember(set, sig) ?
91 "true" : "false");
92 break;
93 case 'C':
94 xo_emit("{en:catch/%s}", sigismember(set, sig) ?
95 "true" : "false");
96 break;
97 case 'P':
98 xo_emit("{en:list/%s}", sigismember(set, sig) ?
99 "true" : "false");
100 break;
101 case 'I':
102 xo_emit("{en:ignore/%s}", sigismember(set, sig) ?
103 "true" : "false");
104 break;
105 default:
106 xo_emit("{en:unknown/%s}", sigismember(set, sig) ?
107 "true" : "false");
108 break;
109 }
110 }
111
112 void
procstat_sigs(struct procstat * prstat __unused,struct kinfo_proc * kipp)113 procstat_sigs(struct procstat *prstat __unused, struct kinfo_proc *kipp)
114 {
115 int j;
116
117 if ((procstat_opts & PS_OPT_NOHEADER) == 0)
118 xo_emit("{T:/%5s %-16s %-7s %4s}\n", "PID", "COMM", "SIG",
119 "FLAGS");
120
121 xo_emit("{ek:process_id/%5d/%d}", kipp->ki_pid);
122 xo_emit("{e:command/%-16s/%s}", kipp->ki_comm);
123 xo_open_container("signals");
124 for (j = 1; j <= _SIG_MAXSIG; j++) {
125 xo_emit("{dk:process_id/%5d/%d} ", kipp->ki_pid);
126 xo_emit("{d:command/%-16s/%s} ", kipp->ki_comm);
127 procstat_print_signame(j);
128 xo_emit(" ");
129 procstat_print_sig(&kipp->ki_siglist, j, 'P');
130 procstat_print_sig(&kipp->ki_sigignore, j, 'I');
131 procstat_print_sig(&kipp->ki_sigcatch, j, 'C');
132 procstat_close_signame(j);
133 xo_emit("\n");
134 }
135 xo_close_container("signals");
136 }
137
138 void
procstat_threads_sigs(struct procstat * procstat,struct kinfo_proc * kipp)139 procstat_threads_sigs(struct procstat *procstat, struct kinfo_proc *kipp)
140 {
141 struct kinfo_proc *kip;
142 int j;
143 unsigned int count, i;
144 char *threadid;
145
146 if ((procstat_opts & PS_OPT_NOHEADER) == 0)
147 xo_emit("{T:/%5s %6s %-16s %-7s %4s}\n", "PID", "TID", "COMM",
148 "SIG", "FLAGS");
149
150 kip = procstat_getprocs(procstat, KERN_PROC_PID | KERN_PROC_INC_THREAD,
151 kipp->ki_pid, &count);
152 if (kip == NULL)
153 return;
154 xo_emit("{ek:process_id/%5d/%d}", kipp->ki_pid);
155 xo_emit("{e:command/%-16s/%s}", kipp->ki_comm);
156 xo_open_container("threads");
157 kinfo_proc_sort(kip, count);
158 for (i = 0; i < count; i++) {
159 kipp = &kip[i];
160 asprintf(&threadid, "%d", kipp->ki_tid);
161 if (threadid == NULL)
162 xo_errc(1, ENOMEM, "Failed to allocate memory in "
163 "procstat_threads_sigs()");
164 xo_open_container(threadid);
165 xo_emit("{e:thread_id/%6d/%d}", kipp->ki_tid);
166 xo_open_container("signals");
167 for (j = 1; j <= _SIG_MAXSIG; j++) {
168 xo_emit("{dk:process_id/%5d/%d} ", kipp->ki_pid);
169 xo_emit("{d:thread_id/%6d/%d} ", kipp->ki_tid);
170 xo_emit("{d:command/%-16s/%s} ", kipp->ki_comm);
171 procstat_print_signame(j);
172 xo_emit(" ");
173 procstat_print_sig(&kipp->ki_siglist, j, 'P');
174 procstat_print_sig(&kipp->ki_sigmask, j, 'B');
175 procstat_close_signame(j);
176 xo_emit("\n");
177 }
178 xo_close_container("signals");
179 xo_close_container(threadid);
180 free(threadid);
181 }
182 xo_close_container("threads");
183 procstat_freeprocs(procstat, kip);
184 }
185