diplodocus.org Git - nmh/blob - sbr/pidstatus.c

   1 /* pidstatus.c -- report child's status
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9
  10 #ifndef WTERMSIG
  11 # define WTERMSIG(s) ((int)((s) & 0x7F))
  12 #endif
  13
  14 #ifndef WCOREDUMP
  15 # define WCOREDUMP(s) ((s) & 0x80)
  16 #endif
  17
  18 /*
  19  * Return 0 if the command exited with an exit code of zero, a nonzero code
  20  * otherwise.
  21  *
  22  * Print out an appropriate status message we didn't exit with an exit code
  23  * of zero.
  24  */
  25
  26 int
  27 pidstatus (int status, FILE *fp, char *cp)
  28 {
  29     int signum;
  30     char *signame;
  31
  32 /*
  33  * I have no idea what this is for (rc)
  34  * so I'm commenting it out for right now.
  35  *
  36  *  if ((status & 0xff00) == 0xff00)
  37  *      return status;
  38  */
  39
  40     /* If child process returned normally */
  41     if (WIFEXITED(status)) {
  42         if ((signum = WEXITSTATUS(status))) {
  43             if (cp)
  44                 fprintf (fp, "%s: ", cp);
  45             fprintf (fp, "exit %d\n", signum);
  46         }
  47         return signum;
  48     }
  49
  50     if (WIFSIGNALED(status)) {
  51         /* If child process terminated due to receipt of a signal */
  52         signum = WTERMSIG(status);
  53         if (signum != SIGINT) {
  54             if (cp)
  55                 fprintf (fp, "%s: ", cp);
  56             fprintf (fp, "signal %d", signum);
  57             errno = 0;
  58             signame = strsignal(signum);
  59             if (errno)
  60                 signame = NULL;
  61             if (signame)
  62                 fprintf (fp, " (%s%s)\n", signame,
  63                          WCOREDUMP(status) ? ", core dumped" : "");
  64             else
  65                 fprintf (fp, "%s\n", WCOREDUMP(status) ? " (core dumped)" : "");
  66         }
  67     }
  68
  69     return status;
  70 }