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23
* Contact the authors at <mandos@recompile.se>.
26
#define _GNU_SOURCE /* program_invocation_short_name,
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vasprintf(), asprintf(),
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TEMP_FAILURE_RETRY() */
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#include <sys/types.h> /* sig_atomic_t, pid_t, setuid(),
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geteuid(), setsid() */
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#include <argp.h> /* argp_program_version,
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argp_program_bug_address,
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ARGP_ERR_UNKNOWN, struct argp,
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argp_parse(), ARGP_IN_ORDER */
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#include <stddef.h> /* NULL, size_t */
26
#define _GNU_SOURCE /* asprintf(), TEMP_FAILURE_RETRY() */
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#include <signal.h> /* sig_atomic_t, struct sigaction,
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sigemptyset(), sigaddset(), SIGINT,
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SIGHUP, SIGTERM, sigaction(),
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#include <stdbool.h> /* bool, false, true */
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#include <stdio.h> /* FILE, fprintf(), vfprintf(),
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vasprintf(), stderr, asprintf(),
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fopen(), fscanf(), fclose(),
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#include <stdarg.h> /* va_list, va_start(), vfprintf() */
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#include <errno.h> /* program_invocation_short_name,
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errno, ENOMEM, EINTR, ENOENT,
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#include <string.h> /* strerror(), strdup(), memcmp() */
32
#include <fcntl.h> /* open(), O_RDONLY */
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#include <iso646.h> /* and, or, not*/
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#include <sys/types.h> /* size_t, ssize_t, pid_t, struct
36
#include <sys/wait.h> /* waitpid() */
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#include <stddef.h> /* NULL */
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#include <string.h> /* strchr(), memcmp() */
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#include <stdio.h> /* asprintf(), perror(), fopen(),
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fscanf(), vasprintf(), fprintf(),
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#include <unistd.h> /* close(), readlink(), read(),
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fork(), setsid(), chdir(), dup2(),
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STDERR_FILENO, execv(), access() */
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#include <stdlib.h> /* free(), EXIT_FAILURE, realloc(),
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EXIT_SUCCESS, malloc(), _exit(),
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#include <dirent.h> /* scandir(), alphasort() */
49
#include <inttypes.h> /* intmax_t, strtoumax(), SCNuMAX */
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#include <sys/stat.h> /* struct stat, lstat() */
51
#include <sysexits.h> /* EX_OSERR, EX_UNAVAILABLE */
48
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#include <error.h> /* error() */
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#include <stdlib.h> /* free(), getenv(), malloc(),
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reallocarray(), realloc(),
51
EXIT_FAILURE, EXIT_SUCCESS */
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#include <unistd.h> /* TEMP_FAILURE_RETRY(), setuid(),
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geteuid(), setsid(), chdir(),
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dup2(), STDERR_FILENO,
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STDOUT_FILENO, fork(), _exit(),
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execv(), ssize_t, readlink(),
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close(), read(), access(), X_OK */
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#include <signal.h> /* kill(), SIGTERM, struct sigaction,
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sigemptyset(), SIGINT, SIGHUP,
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sigaddset(), SIG_IGN */
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#include <sys/wait.h> /* waitpid(), WIFEXITED(),
62
WEXITSTATUS(), WIFSIGNALED(),
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#include <iso646.h> /* not, and, or */
65
#include <sysexits.h> /* EX_OSERR, EX_USAGE,
67
#include <stdint.h> /* SIZE_MAX */
68
#include <dirent.h> /* struct dirent, scandir(),
70
#include <inttypes.h> /* uintmax_t, strtoumax(), SCNuMAX,
72
#include <sys/stat.h> /* struct stat, lstat(), S_ISLNK() */
73
#include <fcntl.h> /* open(), O_RDONLY */
53
#include <errno.h> /* TEMP_FAILURE_RETRY */
74
54
#include <argz.h> /* argz_count(), argz_extract() */
55
#include <stdarg.h> /* va_list, va_start(), ... */
76
57
sig_atomic_t interrupted_by_signal = 0;
77
const char *argp_program_version = "plymouth " VERSION;
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const char *argp_program_bug_address = "<mandos@recompile.se>";
80
59
/* Used by Ubuntu 11.04 (Natty Narwahl) */
81
const char plymouth_old_old_pid[] = "/dev/.initramfs/plymouth.pid";
60
const char plymouth_old_pid[] = "/dev/.initramfs/plymouth.pid";
82
61
/* Used by Ubuntu 11.10 (Oneiric Ocelot) */
83
const char plymouth_old_pid[] = "/run/initramfs/plymouth.pid";
84
/* Used by Debian 9 (stretch) */
85
const char plymouth_pid[] = "/run/plymouth/pid";
62
const char plymouth_pid[] = "/run/initramfs/plymouth.pid";
87
64
const char plymouth_path[] = "/bin/plymouth";
88
65
const char plymouthd_path[] = "/sbin/plymouthd";
468
395
int main(__attribute__((unused))int argc,
469
396
__attribute__((unused))char **argv){
471
398
char *prompt_arg;
472
399
pid_t plymouth_command_pid;
477
struct argp_option options[] = {
478
{ .name = "prompt", .key = 128, .arg = "PROMPT",
479
.doc = "The prompt to show" },
480
{ .name = "debug", .key = 129,
481
.doc = "Debug mode" },
485
__attribute__((nonnull(3)))
486
error_t parse_opt (int key, char *arg, __attribute__((unused))
487
struct argp_state *state){
490
case 128: /* --prompt */
493
fprintf_plus(stderr, "Custom prompt \"%s\"\n", prompt);
496
case 129: /* --debug */
500
return ARGP_ERR_UNKNOWN;
505
struct argp argp = { .options = options, .parser = parse_opt,
507
.doc = "Mandos plymouth -- Read and"
508
" output a password" };
509
ret = argp_parse(&argp, argc, argv, ARGP_IN_ORDER, NULL, NULL);
516
error_plus(0, errno, "argp_parse");
519
error_plus(0, errno, "argp_parse");
524
403
/* test -x /bin/plymouth */
525
404
ret = access(plymouth_path, X_OK);
527
406
/* Plymouth is probably not installed. Don't print an error
528
407
message, just exit. */
530
fprintf_plus(stderr, "Plymouth (%s) not found\n",
533
408
exit(EX_UNAVAILABLE);