6
6
#include <stdbool.h> /* bool, false, true */
7
7
#include <fcntl.h> /* open(), O_RDONLY */
8
8
#include <iso646.h> /* and, or, not*/
9
#include <sys/types.h> /* size_t, ssize_t, pid_t, struct
9
#include <sys/types.h> /* size_t, ssize_t, pid_t, struct dirent,
11
11
#include <sys/wait.h> /* waitpid() */
12
12
#include <stddef.h> /* NULL */
13
13
#include <string.h> /* strchr(), memcmp() */
14
#include <stdio.h> /* asprintf(), perror(), fopen(),
16
#include <unistd.h> /* close(), readlink(), read(),
17
fork(), setsid(), chdir(), dup2(),
14
#include <stdio.h> /* asprintf(), perror(), fopen(), fscanf() */
15
#include <unistd.h> /* close(), readlink(), read(), fork()
16
setsid(), chdir(), dup2()
18
17
STDERR_FILENO, execv(), access() */
19
18
#include <stdlib.h> /* free(), EXIT_FAILURE, realloc(),
20
19
EXIT_SUCCESS, malloc(), _exit(),
22
21
#include <dirent.h> /* scandir(), alphasort() */
23
22
#include <inttypes.h> /* intmax_t, strtoumax(), SCNuMAX */
24
23
#include <sys/stat.h> /* struct stat, lstat() */
25
#include <sysexits.h> /* EX_OSERR, EX_UNAVAILABLE */
24
#include <sysexits.h> /* EX_OSERR */
26
25
#include <error.h> /* error() */
27
26
#include <errno.h> /* TEMP_FAILURE_RETRY */
28
#include <argz.h> /* argz_count(), argz_extract() */
30
29
sig_atomic_t interrupted_by_signal = 0;
31
30
const char plymouth_pid[] = "/dev/.initramfs/plymouth.pid";
32
31
const char plymouth_path[] = "/bin/plymouth";
33
32
const char plymouthd_path[] = "/sbin/plymouthd";
34
const char *plymouthd_default_argv[] = {"/sbin/plymouthd",
33
const char *plymouthd_default_argv[] = {"/sbin/plymouthd", "--mode=boot",
36
34
"--attach-to-session",
35
"--pid-file=/dev/.initramfs/plymouth.pid",
42
38
static void termination_handler(__attribute__((unused))int signum){
293
288
/* we got cmdline and cmdline_len, ignore rest... */
294
char **argv = malloc((argz_count(cmdline, cmdline_len) + 1)
295
* sizeof(char *)); /* Get number of args */
297
error(0, errno, "argv = malloc()");
289
const char **argv = NULL;
290
size_t argv_size = 0;
291
for(char *arg = cmdline; arg-cmdline < (ssize_t)cmdline_len;
292
arg = strchr(arg, '\0')+1){
293
tmp = realloc(argv, ((++argv_size)+1)*sizeof(char *));
295
error(0, errno, "realloc");
299
argv = (const char **)tmp;
300
argv[argv_size-1] = arg;
301
argz_extract(cmdline, cmdline_len, argv); /* Create argv */
302
return (const char **)argv;
302
argv[argv_size] = NULL;
305
306
int main(__attribute__((unused))int argc,
313
314
/* test -x /bin/plymouth */
314
315
ret = access(plymouth_path, X_OK);
316
/* Plymouth is probably not installed. Don't print an error
317
message, just exit. */
318
exit(EX_UNAVAILABLE);
321
320
{ /* Add signal handlers */
322
321
struct sigaction old_action,
323
322
new_action = { .sa_handler = termination_handler,
325
324
sigemptyset(&new_action.sa_mask);
326
for(int *sig = (int[]){ SIGINT, SIGHUP, SIGTERM, 0 };
325
for(int *sig = (int[]){ SIGINT, SIGHUP, SIGTERM, 0 }; *sig != 0; sig++){
328
326
ret = sigaddset(&new_action.sa_mask, *sig);
330
error(EX_OSERR, errno, "sigaddset");
328
error(0, errno, "sigaddset");
332
331
ret = sigaction(*sig, NULL, &old_action);
334
error(EX_OSERR, errno, "sigaction");
333
error(0, errno, "sigaction");
336
336
if(old_action.sa_handler != SIG_IGN){
337
337
ret = sigaction(*sig, &new_action, NULL);
339
error(EX_OSERR, errno, "sigaction");
339
error(0, errno, "sigaction");
345
346
/* plymouth --ping */
346
347
bret = exec_and_wait(&plymouth_command_pid, plymouth_path,
348
{ plymouth_path, "--ping", NULL },
348
(const char *[]){ (const char *)plymouth_path, (const char *)"--ping", (const char *)NULL},
351
351
if(interrupted_by_signal){
352
352
kill_and_wait(plymouth_command_pid);
355
/* Plymouth is probably not running. Don't print an error
356
message, just exit. */
357
exit(EX_UNAVAILABLE);
360
357
prompt = makeprompt();
361
358
ret = asprintf(&prompt_arg, "--prompt=%s", prompt);
364
error(EX_OSERR, errno, "asprintf");
361
error(0, errno, "asprintf");
367
365
/* plymouth ask-for-password --prompt="$prompt" */
368
bret = exec_and_wait(&plymouth_command_pid,
369
plymouth_path, (const char *[])
370
{ plymouth_path, "ask-for-password",
366
bret = exec_and_wait(&plymouth_command_pid, plymouth_path,
367
(const char *[]){plymouth_path, "ask-for-password", prompt_arg, NULL},
373
369
free(prompt_arg);
371
if(interrupted_by_signal){
372
kill_and_wait(plymouth_command_pid);
375
379
exit(EXIT_SUCCESS);
377
if(not interrupted_by_signal){
378
/* exec_and_wait failed for some other reason */
381
kill_and_wait(plymouth_command_pid);
383
const char **plymouthd_argv;
382
const char **plymouthd_argv = NULL;
384
383
pid_t pid = get_pid();
386
385
error(0, 0, "plymouthd pid not found");
387
plymouthd_argv = getargv(pid);
389
if(plymouthd_argv == NULL){
387
390
plymouthd_argv = plymouthd_default_argv;
389
plymouthd_argv = getargv(pid);
392
bret = exec_and_wait(NULL, plymouth_path, (const char *[])
393
{ plymouth_path, "quit", NULL },
398
bret = exec_and_wait(NULL, plymouthd_path, plymouthd_argv,
403
exec_and_wait(NULL, plymouth_path, (const char *[])
404
{ plymouth_path, "show-splash", NULL },
393
bret = exec_and_wait(NULL, plymouth_path,
394
(const char *[]){plymouth_path, "quit", NULL}, false, false);
398
bret = exec_and_wait(NULL, plymouthd_path, plymouthd_argv, false, true);
402
exec_and_wait(NULL, plymouth_path,
403
(const char *[]){ plymouth_path, "show-splash", NULL }, false, false);
406
404
exit(EXIT_FAILURE);