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                                   SIG_IGN, kill(), SIGKILL */
 
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#include <stddef.h>             /* NULL */
 
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#include <stdlib.h>             /* getenv() */
 
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#include <stdio.h>              /* asprintf(), perror() */
 
 
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#include <stdio.h>              /* asprintf() */
 
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#include <stdlib.h>             /* EXIT_FAILURE, free(),
 
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#include <sys/types.h>          /* pid_t, DIR, struct dirent,
 
 
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                                   STDOUT_FILENO, _exit(),
 
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#include <string.h>             /* memcmp() */
 
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#include <errno.h>              /* errno */
 
 
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#include <errno.h>              /* errno, EACCES, ENOTDIR, ELOOP,
 
 
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                                   ENOENT, ENAMETOOLONG, EMFILE,
 
 
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                                   ENFILE, ENOMEM, ENOEXEC, EINVAL,
 
 
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                                   E2BIG, EFAULT, EIO, ETXTBSY,
 
 
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                                   EISDIR, ELIBBAD, EPERM, EINTR,
 
 
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#include <error.h>              /* error() */
 
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#include <sys/wait.h>           /* waitpid(), WIFEXITED(),
 
 
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#include <sysexits.h>           /* EX_OSERR, EX_OSFILE,
 
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sig_atomic_t interrupted_by_signal = 0;
 
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int signal_received;
 
 
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      new_action = { .sa_handler = termination_handler,
 
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    sigemptyset(&new_action.sa_mask);
 
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    sigaddset(&new_action.sa_mask, SIGINT);
 
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    sigaddset(&new_action.sa_mask, SIGHUP);
 
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    sigaddset(&new_action.sa_mask, SIGTERM);
 
 
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    ret = sigaddset(&new_action.sa_mask, SIGINT);
 
 
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      error(0, errno, "sigaddset");
 
 
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      exitstatus = EX_OSERR;
 
 
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    ret = sigaddset(&new_action.sa_mask, SIGHUP);
 
 
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      error(0, errno, "sigaddset");
 
 
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      exitstatus = EX_OSERR;
 
 
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    ret = sigaddset(&new_action.sa_mask, SIGTERM);
 
 
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      error(0, errno, "sigaddset");
 
 
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      exitstatus = EX_OSERR;
 
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    ret = sigaction(SIGINT, NULL, &old_action);
 
 
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      error(0, errno, "sigaction");
 
 
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      exitstatus = EX_OSERR;
 
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    if(old_action.sa_handler != SIG_IGN){
 
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      ret = sigaction(SIGINT, &new_action, NULL);
 
 
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        error(0, errno, "sigaction");
 
 
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        exitstatus = EX_OSERR;
 
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    ret = sigaction(SIGHUP, NULL, &old_action);
 
 
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      error(0, errno, "sigaction");
 
 
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      exitstatus = EX_OSERR;
 
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    if(old_action.sa_handler != SIG_IGN){
 
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      ret = sigaction(SIGHUP, &new_action, NULL);
 
 
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        error(0, errno, "sigaction");
 
 
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        exitstatus = EX_OSERR;
 
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    ret = sigaction(SIGTERM, NULL, &old_action);
 
 
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      error(0, errno, "sigaction");
 
 
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      exitstatus = EX_OSERR;
 
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    if(old_action.sa_handler != SIG_IGN){
 
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      ret = sigaction(SIGTERM, &new_action, NULL);
 
 
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        error(0, errno, "sigaction");
 
 
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        exitstatus = EX_OSERR;
 
 
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    if(not interrupted_by_signal){
 
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      const char splashy_command[] = "/sbin/splashy_update";
 
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      execl(splashy_command, splashy_command, prompt, (char *)NULL);
 
 
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      error(0, errno, "execl");
 
 
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        _exit(EX_UNAVAILABLE);
 
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    _exit(EXIT_FAILURE);
 
 
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      TEMP_FAILURE_RETRY(kill(splashy_pid, SIGKILL));
 
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    pid_t new_splashy_pid = TEMP_FAILURE_RETRY(fork());
 
 
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    pid_t new_splashy_pid = (pid_t)TEMP_FAILURE_RETRY(fork());
 
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    if(new_splashy_pid == 0){
 
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      /* Child; will become new splashy process */
 
 
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         the real user ID (_mandos) */
 
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      ret = setuid(geteuid());
 
 
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        error(0, errno, "setuid");
 
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      ret = chdir("/");
 
 
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        error(0, errno, "chdir");
 
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/*       if(fork() != 0){ */
 
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/*      _exit(EXIT_SUCCESS); */
 
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      ret = dup2(STDERR_FILENO, STDOUT_FILENO); /* replace stdout */
 
 
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        error(0, errno, "dup2");
 
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      execl("/sbin/splashy", "/sbin/splashy", "boot", (char *)NULL);
 
 
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        error(0, errno, "execl");
 
 
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          _exit(EX_UNAVAILABLE);
 
 
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    struct sigaction signal_action;
 
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    sigemptyset(&signal_action.sa_mask);
 
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    signal_action.sa_handler = SIG_DFL;
 
336
 
    ret = TEMP_FAILURE_RETRY(sigaction(signal_received,
 
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                                       &signal_action, NULL));
 
 
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    ret = (int)TEMP_FAILURE_RETRY(sigaction(signal_received,
 
 
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                                            &signal_action, NULL));
 
 
429
      error(0, errno, "sigaction");
 
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      ret = raise(signal_received);
 
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    } while(ret != 0 and errno == EINTR);
 
 
435
      error(0, errno, "raise");
 
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    TEMP_FAILURE_RETRY(pause());