/[path-sandbox]/trunk/src/sandbox.c
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Revision 290 - (show annotations) (download) (as text)
Thu Jul 6 17:25:46 2006 UTC (8 years, 3 months ago) by azarah
File MIME type: text/x-csrc
File size: 19404 byte(s)
Use debug versions of malloc(), realloc() and calloc().

1 /*
2 ** Path sandbox for the gentoo linux portage package system, initially
3 ** based on the ROCK Linux Wrapper for getting a list of created files
4 **
5 ** to integrate with bash, bash should have been built like this
6 **
7 ** ./configure --prefix=<prefix> --host=<host> --without-gnu-malloc
8 **
9 ** it's very important that the --enable-static-link option is NOT specified
10 **
11 ** Copyright (C) 2001 Geert Bevin, Uwyn, http://www.uwyn.com
12 ** Distributed under the terms of the GNU General Public License, v2 or later
13 ** Author : Geert Bevin <gbevin@uwyn.com>
14 ** $Header$
15 */
16
17 /* #define _GNU_SOURCE */
18
19 #include <errno.h>
20 #include <signal.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <limits.h>
24 #include <string.h>
25 #include <sys/wait.h>
26 #include <signal.h>
27 #include <unistd.h>
28 #include <fcntl.h>
29
30 #include "sandbox.h"
31 #include "rcscripts/rcutil.h"
32
33 struct sandbox_info_t {
34 char sandbox_log[SB_PATH_MAX];
35 char sandbox_debug_log[SB_PATH_MAX];
36 char sandbox_lib[SB_PATH_MAX];
37 char sandbox_rc[SB_PATH_MAX];
38 char work_dir[SB_PATH_MAX];
39 char var_tmp_dir[SB_PATH_MAX];
40 char tmp_dir[SB_PATH_MAX];
41 char *home_dir;
42 } sandbox_info_t;
43
44 static int print_debug = 0;
45
46 volatile static int stop_called = 0;
47 volatile static pid_t child_pid = 0;
48
49 static char log_domain[] = "sandbox";
50
51 extern char **environ;
52
53 int sandbox_setup(struct sandbox_info_t *sandbox_info, bool interactive)
54 {
55 if (NULL != getenv(ENV_PORTAGE_TMPDIR)) {
56 /* Portage handle setting SANDBOX_WRITE itself. */
57 sandbox_info->work_dir[0] = '\0';
58 } else {
59 if (NULL == getcwd(sandbox_info->work_dir, SB_PATH_MAX)) {
60 perror("sandbox: Failed to get current directory");
61 return -1;
62 }
63 if (interactive)
64 setenv(ENV_SANDBOX_WORKDIR, sandbox_info->work_dir, 1);
65 }
66
67 /* Do not resolve symlinks, etc .. libsandbox will handle that. */
68 if (!rc_is_dir(VAR_TMPDIR, TRUE)) {
69 perror("sandbox: Failed to get var_tmp_dir");
70 return -1;
71 }
72 snprintf(sandbox_info->var_tmp_dir, SB_PATH_MAX, "%s", VAR_TMPDIR);
73
74 if (-1 == get_tmp_dir(sandbox_info->tmp_dir)) {
75 perror("sandbox: Failed to get tmp_dir");
76 return -1;
77 }
78 setenv(ENV_TMPDIR, sandbox_info->tmp_dir, 1);
79
80 sandbox_info->home_dir = getenv("HOME");
81 if (!sandbox_info->home_dir) {
82 sandbox_info->home_dir = sandbox_info->tmp_dir;
83 setenv("HOME", sandbox_info->home_dir, 1);
84 }
85
86 /* Generate sandbox lib path */
87 get_sandbox_lib(sandbox_info->sandbox_lib);
88
89 /* Generate sandbox bashrc path */
90 get_sandbox_rc(sandbox_info->sandbox_rc);
91
92 /* Generate sandbox log full path */
93 get_sandbox_log(sandbox_info->sandbox_log);
94 if (rc_file_exists(sandbox_info->sandbox_log)) {
95 if (-1 == unlink(sandbox_info->sandbox_log)) {
96 perror("sandbox: Could not unlink old log file");
97 return -1;
98 }
99 }
100
101 /* Generate sandbox debug log full path */
102 get_sandbox_debug_log(sandbox_info->sandbox_debug_log);
103 if (rc_file_exists(sandbox_info->sandbox_debug_log)) {
104 if (-1 == unlink(sandbox_info->sandbox_debug_log)) {
105 perror("sandbox: Could not unlink old debug log file");
106 return -1;
107 }
108 }
109
110 return 0;
111 }
112
113 int print_sandbox_log(char *sandbox_log)
114 {
115 int sandbox_log_file = -1;
116 char *beep_count_env = NULL;
117 int i, color, beep_count = 0;
118 long len = 0;
119 char *buffer = NULL;
120
121 if (!rc_is_file(sandbox_log, FALSE)) {
122 perror("sandbox: Log file is not a regular file");
123 return 0;
124 }
125
126 sandbox_log_file = open(sandbox_log, O_RDONLY);
127 if (-1 == sandbox_log_file) {
128 perror("sandbox: Could not open Log file");
129 return 0;
130 }
131
132 len = file_length(sandbox_log_file);
133 buffer = (char *)xmalloc((len + 1) * sizeof(char));
134 memset(buffer, 0, len + 1);
135 read(sandbox_log_file, buffer, len);
136 close(sandbox_log_file);
137
138 color = ((is_env_on(ENV_NOCOLOR)) ? 0 : 1);
139
140 SB_EERROR(color,
141 "--------------------------- ACCESS VIOLATION SUMMARY ---------------------------",
142 "\n");
143 SB_EERROR(color, "LOG FILE = \"%s\"", "\n\n", sandbox_log);
144 fprintf(stderr, "%s", buffer);
145 if (NULL != buffer)
146 free(buffer);
147 SB_EERROR(color,
148 "--------------------------------------------------------------------------------",
149 "\n");
150
151 beep_count_env = getenv(ENV_SANDBOX_BEEP);
152 if (beep_count_env)
153 beep_count = atoi(beep_count_env);
154 else
155 beep_count = DEFAULT_BEEP_COUNT;
156
157 for (i = 0; i < beep_count; i++) {
158 fputc('\a', stderr);
159 if (i < beep_count - 1)
160 sleep(1);
161 }
162
163 return 1;
164 }
165
166 void stop(int signum)
167 {
168 if (0 == stop_called) {
169 stop_called = 1;
170 printf("sandbox: Caught signal %d in pid %d\n",
171 signum, getpid());
172 } else {
173 fprintf(stderr,
174 "sandbox: Signal already caught and busy still cleaning up!\n");
175 }
176 }
177
178 void usr1_handler(int signum, siginfo_t *siginfo, void *ucontext)
179 {
180 if (0 == stop_called) {
181 stop_called = 1;
182 printf("sandbox: Caught signal %d in pid %d\n",
183 signum, getpid());
184
185 /* FIXME: This is really bad form, as we should kill the whole process
186 * tree, but currently that is too much work and not worth the
187 * effort. Thus we only kill the calling process and our child
188 * for now.
189 */
190 if (siginfo->si_pid > 0)
191 kill(siginfo->si_pid, SIGKILL);
192 kill(child_pid, SIGKILL);
193 } else {
194 fprintf(stderr,
195 "sandbox: Signal already caught and busy still cleaning up!\n");
196 }
197 }
198
199 char *sandbox_subst_env_vars(dyn_buf_t *env_data)
200 {
201 dyn_buf_t *new_data = NULL;
202 char *tmp_ptr, *tmp_data = NULL;
203 char *var_start, *var_stop;
204
205 new_data = new_dyn_buf();
206 if (NULL == new_data)
207 return NULL;
208
209 tmp_data = read_line_dyn_buf(env_data);
210 if (NULL == tmp_data)
211 goto error;
212 tmp_ptr = tmp_data;
213
214 while (NULL != (var_start = strchr(tmp_ptr, '$'))) {
215 char *env = NULL;
216
217 var_stop = strchr(var_start, '}');
218
219 /* We only support ${} style env var names, so just skip any
220 * '$' that do not follow this syntax */
221 if (('{' != var_start[1]) || (NULL == var_stop)) {
222 tmp_ptr = var_start + 1;
223 continue;
224 }
225
226 /* Terminate part before env string so that we can copy it */
227 var_start[0] = '\0';
228 /* Move var_start past '${' */
229 var_start += 2;
230 /* Terminate the name of the env var */
231 var_stop[0] = '\0';
232
233 if (strlen(var_start) > 0)
234 env = getenv(var_start);
235 if (-1 == sprintf_dyn_buf(new_data, "%s%s",
236 tmp_ptr ? tmp_ptr : "",
237 env ? env : ""))
238 goto error;
239
240 /* Move tmp_ptr past the '}' of the env var */
241 tmp_ptr = var_stop + 1;
242 }
243
244 if (0 != strlen(tmp_ptr))
245 if (-1 == write_dyn_buf(new_data, tmp_ptr, strlen(tmp_ptr)))
246 goto error;
247
248 free(tmp_data);
249
250 tmp_data = read_line_dyn_buf(new_data);
251 if (NULL == tmp_data)
252 goto error;
253
254 free_dyn_buf(new_data);
255
256 return tmp_data;
257
258 error:
259 if (NULL != new_data)
260 free_dyn_buf(new_data);
261 if (NULL != tmp_data)
262 free(tmp_data);
263
264 return NULL;
265 }
266
267 void sandbox_set_env_var(const char *env_var)
268 {
269 char *config;
270
271 /* We check if the variable is set in the environment, and if not, we
272 * get it from sandbox.conf, and if they exist, we just add them to the
273 * environment if not already present. */
274 if (NULL == getenv(env_var)) {
275 config = rc_get_cnf_entry(SANDBOX_CONF_FILE, env_var, NULL);
276 if (NULL != config) {
277 setenv(ENV_SANDBOX_VERBOSE, config, 0);
278 free(config);
279 }
280 }
281 }
282
283 int sandbox_set_env_access_var(const char *access_var)
284 {
285 dyn_buf_t *env_data = NULL;
286 int count = 0;
287 char *config = NULL;
288 char **confd_files = NULL;
289 bool use_confd = TRUE;
290
291 env_data = new_dyn_buf();
292 if (NULL == env_data)
293 return -1;
294
295 /* Now get the defaults for the access variable from sandbox.conf.
296 * These do not get overridden via the environment. */
297 config = rc_get_cnf_entry(SANDBOX_CONF_FILE, access_var, ":");
298 if (NULL != config) {
299 if (-1 == write_dyn_buf(env_data, config, strlen(config)))
300 goto error;
301 free(config);
302 config = NULL;
303 }
304 /* Append whatever might be already set. If anything is set, we do
305 * not process the sandbox.d/ files for this variable. */
306 if (NULL != getenv(access_var)) {
307 use_confd = FALSE;
308 if (-1 == sprintf_dyn_buf(env_data, env_data->wr_index ? ":%s" : "%s",
309 getenv(access_var)))
310 goto error;
311 }
312
313 if (!use_confd)
314 goto done;
315
316 /* Now scan the files in sandbox.d/ if the access variable was not
317 * alreay set. */
318 confd_files = rc_ls_dir(SANDBOX_CONFD_DIR, FALSE, TRUE);
319 if (NULL != confd_files) {
320 while (NULL != confd_files[count]) {
321 config = rc_get_cnf_entry(confd_files[count], access_var, ":");
322 if (NULL != config) {
323 if (-1 == sprintf_dyn_buf(env_data,
324 env_data->wr_index ? ":%s" : "%s",
325 config))
326 goto error;
327 free(config);
328 config = NULL;
329 }
330 count++;
331 }
332
333 str_list_free(confd_files);
334 }
335
336 done:
337 if (env_data->wr_index > 0) {
338 char *subst;
339
340 subst = sandbox_subst_env_vars(env_data);
341 if (NULL == subst)
342 goto error;
343
344 setenv(access_var, subst, 1);
345 free(subst);
346 }
347
348 free_dyn_buf(env_data);
349
350 return 0;
351
352 error:
353 if (NULL != env_data)
354 free_dyn_buf(env_data);
355 if (NULL != config)
356 free(config);
357 if (NULL != confd_files)
358 str_list_free(confd_files);
359
360 return -1;
361 }
362
363 int sandbox_setup_env_config(struct sandbox_info_t *sandbox_info)
364 {
365 sandbox_set_env_var(ENV_SANDBOX_VERBOSE);
366 sandbox_set_env_var(ENV_SANDBOX_DEBUG);
367 sandbox_set_env_var(ENV_SANDBOX_BEEP);
368 sandbox_set_env_var(ENV_NOCOLOR);
369
370 if (-1 == sandbox_set_env_access_var(ENV_SANDBOX_DENY))
371 return -1;
372 if (NULL == getenv(ENV_SANDBOX_DENY))
373 setenv(ENV_SANDBOX_DENY, LD_PRELOAD_FILE, 1);
374
375 if (-1 == sandbox_set_env_access_var(ENV_SANDBOX_READ))
376 return -1;
377 if (NULL == getenv(ENV_SANDBOX_READ))
378 setenv(ENV_SANDBOX_READ, "/", 1);
379
380 if (-1 == sandbox_set_env_access_var(ENV_SANDBOX_WRITE))
381 return -1;
382 if ((NULL == getenv(ENV_SANDBOX_WRITE)) &&
383 (NULL != sandbox_info->work_dir))
384 setenv(ENV_SANDBOX_WRITE, sandbox_info->work_dir, 1);
385
386 if (-1 == sandbox_set_env_access_var(ENV_SANDBOX_PREDICT))
387 return -1;
388 if ((NULL == getenv(ENV_SANDBOX_PREDICT)) &&
389 (NULL != sandbox_info->home_dir))
390 setenv(ENV_SANDBOX_PREDICT, sandbox_info->home_dir, 1);
391
392 return 0;
393 }
394
395 int sandbox_setenv(char **env, const char *name, const char *val) {
396 char **tmp_env = env;
397 char *tmp_string = NULL;
398 int retval = 0;
399
400 /* XXX: We add the new variable to the end (no replacing). If this
401 * is changed, we need to fix sandbox_setup_environ() below */
402 while (NULL != *tmp_env)
403 tmp_env++;
404
405 /* strlen(name) + strlen(val) + '=' + '\0' */
406 /* FIXME: Should probably free this at some stage - more neatness than
407 * a real leak that will cause issues. */
408 tmp_string = xcalloc(strlen(name) + strlen(val) + 2, sizeof(char *));
409 if (NULL == tmp_string) {
410 perror("sandbox: Out of memory (sandbox_setenv)");
411 exit(EXIT_FAILURE);
412 }
413
414 retval = snprintf(tmp_string, strlen(name) + strlen(val) + 2, "%s=%s",
415 name, val);
416 *tmp_env = tmp_string;
417
418 return 0;
419 }
420
421 /* We setup the environment child side only to prevent issues with
422 * setting LD_PRELOAD parent side */
423 char **sandbox_setup_environ(struct sandbox_info_t *sandbox_info, bool interactive)
424 {
425 int env_size = 0;
426 int have_ld_preload = 0;
427
428 char **new_environ;
429 char **env_ptr = environ;
430 char *ld_preload_envvar = NULL;
431 char *orig_ld_preload_envvar = NULL;
432 char sb_pid[64];
433
434 if (-1 == sandbox_setup_env_config(sandbox_info))
435 return NULL;
436
437 /* Unset these, as its easier than replacing when setting up our
438 * new environment below */
439 unsetenv(ENV_SANDBOX_ON);
440 unsetenv(ENV_SANDBOX_PID);
441 unsetenv(ENV_SANDBOX_LIB);
442 unsetenv(ENV_SANDBOX_BASHRC);
443 unsetenv(ENV_SANDBOX_LOG);
444 unsetenv(ENV_SANDBOX_DEBUG_LOG);
445 unsetenv(ENV_SANDBOX_WORKDIR);
446 unsetenv(ENV_SANDBOX_ACTIVE);
447
448 if (NULL != getenv(ENV_LD_PRELOAD)) {
449 have_ld_preload = 1;
450 orig_ld_preload_envvar = getenv(ENV_LD_PRELOAD);
451
452 ld_preload_envvar = xcalloc(strlen(orig_ld_preload_envvar) +
453 strlen(sandbox_info->sandbox_lib) + 2,
454 sizeof(char *));
455 if (NULL == ld_preload_envvar)
456 return NULL;
457 snprintf(ld_preload_envvar, strlen(orig_ld_preload_envvar) +
458 strlen(sandbox_info->sandbox_lib) + 2, "%s %s",
459 sandbox_info->sandbox_lib, orig_ld_preload_envvar);
460 } else {
461 ld_preload_envvar = rc_strndup(sandbox_info->sandbox_lib,
462 strlen(sandbox_info->sandbox_lib));
463 if (NULL == ld_preload_envvar)
464 return NULL;
465 }
466 /* Do not unset this, as strange things might happen */
467 /* unsetenv(ENV_LD_PRELOAD); */
468
469 while (NULL != *env_ptr) {
470 env_size++;
471 env_ptr++;
472 }
473
474 /* FIXME: Should probably free this at some stage - more neatness than
475 * a real leak that will cause issues. */
476 new_environ = xcalloc((env_size + 15 + 1) * sizeof(char *), sizeof(char *));
477 if (NULL == new_environ)
478 goto error;
479
480 snprintf(sb_pid, sizeof(sb_pid), "%i", getpid());
481
482 /* First add our new variables to the beginning - this is due to some
483 * weirdness that I cannot remember */
484 sandbox_setenv(new_environ, ENV_SANDBOX_ON, "1");
485 sandbox_setenv(new_environ, ENV_SANDBOX_PID, sb_pid);
486 sandbox_setenv(new_environ, ENV_SANDBOX_LIB, sandbox_info->sandbox_lib);
487 sandbox_setenv(new_environ, ENV_SANDBOX_BASHRC, sandbox_info->sandbox_rc);
488 sandbox_setenv(new_environ, ENV_SANDBOX_LOG, sandbox_info->sandbox_log);
489 sandbox_setenv(new_environ, ENV_SANDBOX_DEBUG_LOG,
490 sandbox_info->sandbox_debug_log);
491 /* Is this an interactive session? */
492 if (interactive)
493 sandbox_setenv(new_environ, ENV_SANDBOX_INTRACTV, "1");
494 /* Just set the these if not already set so that is_env_on() work */
495 if (!getenv(ENV_SANDBOX_VERBOSE))
496 sandbox_setenv(new_environ, ENV_SANDBOX_VERBOSE, "1");
497 if (!getenv(ENV_SANDBOX_DEBUG))
498 sandbox_setenv(new_environ, ENV_SANDBOX_DEBUG, "0");
499 if (!getenv(ENV_NOCOLOR))
500 sandbox_setenv(new_environ, ENV_NOCOLOR, "no");
501 /* If LD_PRELOAD was not set, set it here, else do it below */
502 if (1 != have_ld_preload)
503 sandbox_setenv(new_environ, ENV_LD_PRELOAD, ld_preload_envvar);
504
505 /* Make sure our bashrc gets preference */
506 sandbox_setenv(new_environ, ENV_BASH_ENV, sandbox_info->sandbox_rc);
507
508 /* This one should NEVER be set in ebuilds, as it is the one
509 * private thing libsandbox.so use to test if the sandbox
510 * should be active for this pid, or not.
511 *
512 * azarah (3 Aug 2002)
513 */
514
515 sandbox_setenv(new_environ, ENV_SANDBOX_ACTIVE, SANDBOX_ACTIVE);
516
517 env_size = 0;
518 while (NULL != new_environ[env_size])
519 env_size++;
520
521 /* Now add the rest */
522 env_ptr = environ;
523 while (NULL != *env_ptr) {
524 if ((1 == have_ld_preload) &&
525 (strstr(*env_ptr, LD_PRELOAD_EQ) == *env_ptr))
526 /* If LD_PRELOAD was set, and this is it in the original
527 * environment, replace it with our new copy */
528 /* XXX: The following works as it just add whatever as
529 * the last variable to nev_environ */
530 sandbox_setenv(new_environ, ENV_LD_PRELOAD,
531 ld_preload_envvar);
532 else
533 new_environ[env_size + (env_ptr - environ)] = *env_ptr;
534 env_ptr++;
535 }
536
537 if (NULL != ld_preload_envvar)
538 free(ld_preload_envvar);
539
540 return new_environ;
541
542 error:
543 if (NULL != ld_preload_envvar)
544 free(ld_preload_envvar);
545
546 return NULL;
547 }
548
549 int spawn_shell(char *argv_bash[], char *env[], int debug)
550 {
551 int status = 0;
552 int ret = 0;
553
554 child_pid = fork();
555
556 /* Child's process */
557 if (0 == child_pid) {
558 execve(argv_bash[0], argv_bash, env);
559 return 0;
560 } else if (child_pid < 0) {
561 if (debug)
562 fprintf(stderr, "Process failed to spawn!\n");
563 return 0;
564 }
565 ret = waitpid(child_pid, &status, 0);
566 if ((-1 == ret) || (status > 0)) {
567 if (debug)
568 fprintf(stderr, "Process returned with failed exit status!\n");
569 return 0;
570 }
571
572 return 1;
573 }
574
575 int main(int argc, char **argv)
576 {
577 struct sigaction act_new;
578
579 int i = 0, success = 1;
580 int sandbox_log_presence = 0;
581 long len;
582
583 struct sandbox_info_t sandbox_info;
584
585 char **sandbox_environ;
586 char **argv_bash = NULL;
587
588 char *run_str = "-c";
589
590 rc_log_domain(log_domain);
591
592 /* Only print info if called with no arguments .... */
593 if (argc < 2)
594 print_debug = 1;
595
596 if (print_debug)
597 printf("========================== Gentoo linux path sandbox ===========================\n");
598
599 /* check if a sandbox is already running */
600 if (NULL != getenv(ENV_SANDBOX_ACTIVE)) {
601 fprintf(stderr, "Not launching a new sandbox instance\n");
602 fprintf(stderr, "Another one is already running in this process hierarchy.\n");
603 exit(EXIT_FAILURE);
604 }
605
606 /* determine the location of all the sandbox support files */
607 if (print_debug)
608 printf("Detection of the support files.\n");
609
610 if (-1 == sandbox_setup(&sandbox_info, print_debug)) {
611 fprintf(stderr, "sandbox: Failed to setup sandbox.");
612 exit(EXIT_FAILURE);
613 }
614
615 /* verify the existance of required files */
616 if (print_debug)
617 printf("Verification of the required files.\n");
618
619 #ifndef SB_HAVE_MULTILIB
620 if (!rc_file_exists(sandbox_info.sandbox_lib)) {
621 perror("sandbox: Could not open the sandbox library");
622 exit(EXIT_FAILURE);
623 }
624 #endif
625 if (!rc_file_exists(sandbox_info.sandbox_rc)) {
626 perror("sandbox: Could not open the sandbox rc file");
627 exit(EXIT_FAILURE);
628 }
629
630 /* set up the required environment variables */
631 if (print_debug)
632 printf("Setting up the required environment variables.\n");
633
634 /* Setup the child environment stuff */
635 sandbox_environ = sandbox_setup_environ(&sandbox_info, print_debug);
636 if (NULL == sandbox_environ) {
637 perror("sandbox: Out of memory (environ)");
638 exit(EXIT_FAILURE);
639 }
640
641 /* If not in portage, cd into it work directory */
642 if ('\0' != sandbox_info.work_dir[0])
643 chdir(sandbox_info.work_dir);
644
645 argv_bash = (char **)xmalloc(6 * sizeof(char *));
646 argv_bash[0] = strdup("/bin/bash");
647 argv_bash[1] = strdup("-rcfile");
648 argv_bash[2] = strdup(sandbox_info.sandbox_rc);
649
650 if (argc < 2)
651 argv_bash[3] = NULL;
652 else
653 argv_bash[3] = strdup(run_str); /* "-c" */
654
655 argv_bash[4] = NULL; /* strdup(run_arg); */
656 argv_bash[5] = NULL;
657
658 if (argc >= 2) {
659 for (i = 1; i < argc; i++) {
660 if (NULL == argv_bash[4])
661 len = 0;
662 else
663 len = strlen(argv_bash[4]);
664
665 argv_bash[4] = (char *)xrealloc(argv_bash[4],
666 (len + strlen(argv[i]) + 2) * sizeof(char));
667
668 if (0 == len)
669 argv_bash[4][0] = 0;
670 if (1 != i)
671 strcat(argv_bash[4], " ");
672
673 strcat(argv_bash[4], argv[i]);
674 }
675 }
676
677 /* set up the required signal handlers */
678 signal(SIGHUP, &stop);
679 signal(SIGINT, &stop);
680 signal(SIGQUIT, &stop);
681 signal(SIGTERM, &stop);
682 act_new.sa_sigaction = usr1_handler;
683 sigemptyset (&act_new.sa_mask);
684 act_new.sa_flags = SA_SIGINFO | SA_RESTART;
685 sigaction (SIGUSR1, &act_new, NULL);
686
687 /* STARTING PROTECTED ENVIRONMENT */
688 if (print_debug) {
689 printf("The protected environment has been started.\n");
690 printf("--------------------------------------------------------------------------------\n");
691 }
692
693 if (print_debug)
694 printf("Process being started in forked instance.\n");
695
696 /* Start Bash */
697 if (!spawn_shell(argv_bash, sandbox_environ, print_debug))
698 success = 0;
699
700 /* Free environ */
701 free(sandbox_environ);
702
703 /* Free bash stuff */
704 for (i = 0; i < 6; i++) {
705 if (argv_bash[i])
706 free(argv_bash[i]);
707 argv_bash[i] = NULL;
708 }
709 if (argv_bash)
710 free(argv_bash);
711 argv_bash = NULL;
712
713 if (print_debug)
714 printf("Cleaning up sandbox process\n");
715
716 if (print_debug) {
717 printf("========================== Gentoo linux path sandbox ===========================\n");
718 printf("The protected environment has been shut down.\n");
719 }
720
721 if (rc_file_exists(sandbox_info.sandbox_log)) {
722 sandbox_log_presence = 1;
723 print_sandbox_log(sandbox_info.sandbox_log);
724 } else if (print_debug) {
725 printf("--------------------------------------------------------------------------------\n");
726 }
727
728 if ((sandbox_log_presence) || (!success))
729 return 1;
730 else
731 return 0;
732 }
733
734 // vim:noexpandtab noai:cindent ai

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