2 * Copyright (c) 2016 The FreeBSD Foundation
5 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
6 * under sponsorship from the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/procctl.h>
54 str2pid(const char *str)
59 res = strtol(str, &tail, 0);
61 warnx("non-numeric pid");
68 #define KPTI_USAGE "|kpti"
77 fprintf(stderr, "Usage: proccontrol -m (aslr|protmax|trace|trapcap|"
78 "stackgap"KPTI_USAGE") [-q] "
79 "[-s (enable|disable)] [-p pid | command]\n");
84 main(int argc, char *argv[])
86 int arg, ch, error, mode;
88 bool enable, do_command, query;
94 while ((ch = getopt(argc, argv, "m:qs:p:")) != -1) {
97 if (strcmp(optarg, "aslr") == 0)
99 else if (strcmp(optarg, "protmax") == 0)
101 else if (strcmp(optarg, "trace") == 0)
103 else if (strcmp(optarg, "trapcap") == 0)
105 else if (strcmp(optarg, "stackgap") == 0)
106 mode = MODE_STACKGAP;
108 else if (strcmp(optarg, "kpti") == 0)
115 if (strcmp(optarg, "enable") == 0)
117 else if (strcmp(optarg, "disable") == 0)
123 pid = str2pid(optarg);
136 do_command = argc != 0;
138 if (pid != -1 || query)
141 } else if (pid == -1) {
148 error = procctl(P_PID, pid, PROC_ASLR_STATUS, &arg);
151 error = procctl(P_PID, pid, PROC_TRACE_STATUS, &arg);
154 error = procctl(P_PID, pid, PROC_TRAPCAP_STATUS, &arg);
157 error = procctl(P_PID, pid, PROC_PROTMAX_STATUS, &arg);
160 error = procctl(P_PID, pid, PROC_STACKGAP_STATUS, &arg);
164 error = procctl(P_PID, pid, PROC_KPTI_STATUS, &arg);
172 err(1, "procctl status");
175 switch (arg & ~PROC_ASLR_ACTIVE) {
176 case PROC_ASLR_FORCE_ENABLE:
177 printf("force enabled");
179 case PROC_ASLR_FORCE_DISABLE:
180 printf("force disabled");
182 case PROC_ASLR_NOFORCE:
183 printf("not forced");
186 if ((arg & PROC_ASLR_ACTIVE) != 0)
187 printf(", active\n");
189 printf(", not active\n");
193 printf("disabled\n");
195 printf("enabled, no debugger\n");
197 printf("enabled, traced by %d\n", arg);
201 case PROC_TRAPCAP_CTL_ENABLE:
204 case PROC_TRAPCAP_CTL_DISABLE:
205 printf("disabled\n");
210 switch (arg & ~PROC_PROTMAX_ACTIVE) {
211 case PROC_PROTMAX_FORCE_ENABLE:
212 printf("force enabled");
214 case PROC_PROTMAX_FORCE_DISABLE:
215 printf("force disabled");
217 case PROC_PROTMAX_NOFORCE:
218 printf("not forced");
221 if ((arg & PROC_PROTMAX_ACTIVE) != 0)
222 printf(", active\n");
224 printf(", not active\n");
227 switch (arg & (PROC_STACKGAP_ENABLE |
228 PROC_STACKGAP_DISABLE)) {
229 case PROC_STACKGAP_ENABLE:
232 case PROC_STACKGAP_DISABLE:
233 printf("disabled\n");
236 switch (arg & (PROC_STACKGAP_ENABLE_EXEC |
237 PROC_STACKGAP_DISABLE_EXEC)) {
238 case PROC_STACKGAP_ENABLE_EXEC:
239 printf("enabled after exec\n");
241 case PROC_STACKGAP_DISABLE_EXEC:
242 printf("disabled after exec\n");
248 switch (arg & ~PROC_KPTI_STATUS_ACTIVE) {
249 case PROC_KPTI_CTL_ENABLE_ON_EXEC:
252 case PROC_KPTI_CTL_DISABLE_ON_EXEC:
256 if ((arg & PROC_KPTI_STATUS_ACTIVE) != 0)
257 printf(", active\n");
259 printf(", not active\n");
266 arg = enable ? PROC_ASLR_FORCE_ENABLE :
267 PROC_ASLR_FORCE_DISABLE;
268 error = procctl(P_PID, pid, PROC_ASLR_CTL, &arg);
271 arg = enable ? PROC_TRACE_CTL_ENABLE :
272 PROC_TRACE_CTL_DISABLE;
273 error = procctl(P_PID, pid, PROC_TRACE_CTL, &arg);
276 arg = enable ? PROC_TRAPCAP_CTL_ENABLE :
277 PROC_TRAPCAP_CTL_DISABLE;
278 error = procctl(P_PID, pid, PROC_TRAPCAP_CTL, &arg);
281 arg = enable ? PROC_PROTMAX_FORCE_ENABLE :
282 PROC_PROTMAX_FORCE_DISABLE;
283 error = procctl(P_PID, pid, PROC_PROTMAX_CTL, &arg);
286 arg = enable ? PROC_STACKGAP_ENABLE_EXEC :
287 (PROC_STACKGAP_DISABLE |
288 PROC_STACKGAP_DISABLE_EXEC);
289 error = procctl(P_PID, pid, PROC_STACKGAP_CTL, &arg);
293 arg = enable ? PROC_KPTI_CTL_ENABLE_ON_EXEC :
294 PROC_KPTI_CTL_DISABLE_ON_EXEC;
295 error = procctl(P_PID, pid, PROC_KPTI_CTL, &arg);
303 err(1, "procctl ctl");
305 error = execvp(argv[0], argv);