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

   1
   2 /*
   3  * pidstatus.c -- report child's status
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11
  12 #ifndef WTERMSIG
  13 # define WTERMSIG(s) ((int)((s) & 0x7F))
  14 #endif
  15
  16 #ifndef WCOREDUMP
  17 # define WCOREDUMP(s) ((s) & 0x80)
  18 #endif
  19
  20 /*
  21  * Return 0 if the command exited with an exit code of zero, a nonzero code
  22  * otherwise.
  23  *
  24  * Print out an appropriate status message we didn't exit with an exit code
  25  * of zero.
  26  */
  27
  28 int
  29 pidstatus (int status, FILE *fp, char *cp)
  30 {
  31     int signum;
  32     char *signame;
  33
  34 /*
  35  * I have no idea what this is for (rc)
  36  * so I'm commenting it out for right now.
  37  *
  38  *  if ((status & 0xff00) == 0xff00)
  39  *      return status;
  40  */
  41
  42     /* If child process returned normally */
  43     if (WIFEXITED(status)) {
  44         if ((signum = WEXITSTATUS(status))) {
  45             if (cp)
  46                 fprintf (fp, "%s: ", cp);
  47             fprintf (fp, "exit %d\n", signum);
  48         }
  49         return signum;
  50     }
  51
  52     if (WIFSIGNALED(status)) {
  53         /* If child process terminated due to receipt of a signal */
  54         signum = WTERMSIG(status);
  55         if (signum != SIGINT) {
  56             if (cp)
  57                 fprintf (fp, "%s: ", cp);
  58             fprintf (fp, "signal %d", signum);
  59             errno = 0;
  60             signame = strsignal(signum);
  61             if (errno)
  62                 signame = NULL;
  63             if (signame)
  64                 fprintf (fp, " (%s%s)\n", signame,
  65                          WCOREDUMP(status) ? ", core dumped" : "");
  66             else
  67                 fprintf (fp, "%s\n", WCOREDUMP(status) ? " (core dumped)" : "");
  68         }
  69     }
  70
  71     return status;
  72 }