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 /*
  11  * Return 0 if the command exited with an exit code of zero, a nonzero code
  12  * otherwise.
  13  *
  14  * Print out an appropriate status message we didn't exit with an exit code
  15  * of zero.
  16  */
  17
  18 int
  19 pidstatus (int status, FILE *fp, char *cp)
  20 {
  21     char *mesg;
  22     int num;
  23     bool lookup;
  24     char *signame;
  25
  26     if (WIFEXITED(status)) {
  27         status = WEXITSTATUS(status);
  28         if (status) {
  29             if (cp)
  30                 fprintf (fp, "%s: ", cp);
  31             fprintf(fp, "exited %d\n", status);
  32         }
  33         return status;
  34     }
  35
  36     if (WIFSIGNALED(status)) {
  37         mesg = "signalled";
  38         num = WTERMSIG(status);
  39         if (num == SIGINT)
  40             return status;
  41         lookup = true;
  42     } else if (WIFSTOPPED(status)) {
  43         mesg = "stopped";
  44         num = WSTOPSIG(status);
  45         lookup = true;
  46     } else if (WIFCONTINUED(status)) {
  47         mesg = "continued";
  48         num = -1;
  49         lookup = false;
  50     } else {
  51         mesg = "bizarre wait(2) status";
  52         num = status;
  53         lookup = false;
  54     }
  55
  56     if (cp)
  57         fprintf(fp, "%s: ", cp);
  58     fputs(mesg, fp);
  59
  60     if (num != -1) {
  61         fprintf(fp, " %#x", num);
  62         if (lookup) {
  63             errno = 0;
  64             signame = strsignal(num);
  65             if (errno)
  66                 signame = "invalid";
  67             putc(' ', fp);
  68             fputs(signame, fp);
  69         }
  70     }
  71     if (WCOREDUMP(status))
  72         fputs(", core dumped", fp);
  73     putc('\n', fp);
  74
  75     return status;
  76 }