31
31
#include <fcntl.h> /* open(), O_WRONLY, O_RDONLY */
32
32
#include <iso646.h> /* and, or, not*/
33
33
#include <errno.h> /* errno, EINTR */
35
34
#include <sys/types.h> /* size_t, ssize_t, pid_t, DIR, struct
37
36
#include <stddef.h> /* NULL */
38
37
#include <string.h> /* strlen(), memcmp() */
39
#include <stdio.h> /* asprintf()*/
38
#include <stdio.h> /* asprintf(), perror() */
40
39
#include <unistd.h> /* close(), write(), readlink(),
41
40
read(), STDOUT_FILENO, sleep(),
42
41
fork(), setuid(), geteuid(),
43
42
setsid(), chdir(), dup2(),
44
43
STDERR_FILENO, execv() */
45
44
#include <stdlib.h> /* free(), EXIT_FAILURE, realloc(),
46
EXIT_SUCCESS, malloc(), _exit(),
45
EXIT_SUCCESS, malloc(), _exit() */
46
#include <stdlib.h> /* getenv() */
48
47
#include <dirent.h> /* opendir(), readdir(), closedir() */
49
48
#include <inttypes.h> /* intmax_t, strtoimax() */
50
49
#include <sys/stat.h> /* struct stat, lstat(), S_ISLNK */
51
#include <sysexits.h> /* EX_OSERR, EX_UNAVAILABLE */
53
51
sig_atomic_t interrupted_by_signal = 0;
54
52
int signal_received;
225
223
ret = asprintf(&cmdline_filename, "/proc/%s/cmdline",
226
224
proc_ent->d_name);
228
error(0, errno, "asprintf");
229
227
goto fail_find_usplash;
231
229
cl_fd = open(cmdline_filename, O_RDONLY);
232
230
free(cmdline_filename);
234
error(0, errno, "open");
235
233
goto fail_find_usplash;
243
241
if(cmdline_len + blocksize > cmdline_allocated){
244
242
tmp = realloc(cmdline, cmdline_allocated + blocksize);
246
error(0, errno, "realloc");
248
246
goto fail_find_usplash;
262
260
} while(sret != 0);
263
261
ret = close(cl_fd);
265
error(0, errno, "close");
266
264
goto fail_find_usplash;
269
267
/* Close directory */
270
268
ret = closedir(proc_dir);
272
error(0, errno, "closedir");
273
271
goto fail_find_usplash;
324
319
sigemptyset(&new_action.sa_mask);
325
320
ret = sigaddset(&new_action.sa_mask, SIGINT);
327
error(0, errno, "sigaddset");
331
325
ret = sigaddset(&new_action.sa_mask, SIGHUP);
333
error(0, errno, "sigaddset");
337
330
ret = sigaddset(&new_action.sa_mask, SIGTERM);
339
error(0, errno, "sigaddset");
343
335
ret = sigaction(SIGINT, NULL, &old_action);
345
337
if(errno != EINTR){
346
error(0, errno, "sigaction");
400
386
/* Write command to FIFO */
401
387
if(not usplash_write(&fifo_fd, "TIMEOUT", "0")){
402
388
if(errno != EINTR){
403
error(0, errno, "usplash_write");
389
perror("usplash_write");
547
524
/* If usplash was never accessed, we can stop now */
548
525
if(not usplash_accessed){
553
530
if(fifo_fd != -1){
554
531
ret = (int)TEMP_FAILURE_RETRY(close(fifo_fd));
555
532
if(ret == -1 and errno != EINTR){
556
error(0, errno, "close");
603
580
the real user ID (_mandos) */
604
581
ret = setuid(geteuid());
606
error(0, errno, "setuid");
610
587
ret = chdir("/");
612
error(0, errno, "chdir");
615
588
/* if(fork() != 0){ */
616
589
/* _exit(EXIT_SUCCESS); */
618
591
ret = dup2(STDERR_FILENO, STDOUT_FILENO); /* replace our stdout */
620
error(0, errno, "dup2");
624
597
execv(usplash_name, cmdline_argv);
625
598
if(not interrupted_by_signal){
626
error(0, errno, "execv");
629
602
free(cmdline_argv);
633
606
free(cmdline_argv);
635
608
if(not usplash_write(&fifo_fd, "PULSATE", NULL)){
636
609
if(errno != EINTR){
637
error(0, errno, "usplash_write");
610
perror("usplash_write");
653
626
ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
654
627
&signal_action, NULL));
656
error(0, errno, "sigaction");
659
632
ret = raise(signal_received);
660
633
} while(ret != 0 and errno == EINTR);
662
error(0, errno, "raise");
665
638
TEMP_FAILURE_RETRY(pause());