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 #include "pidstatus.h"
  10
  11 /*
  12  * Return 0 if the command exited with an exit code of zero, a nonzero code
  13  * otherwise.
  14  *
  15  * Print out an appropriate status message we didn't exit with an exit code
  16  * of zero.
  17  */
  18
  19 int
  20 pidstatus (int status, FILE *fp, char *cp)
  21 {
  22     char *mesg;
  23     int num;
  24     bool lookup;
  25     char *signame;
  26
  27     if (WIFEXITED(status)) {
  28         status = WEXITSTATUS(status);
  29         if (status) {
  30             if (cp)
  31                 fprintf (fp, "%s: ", cp);
  32             fprintf(fp, "exited %d\n", status);
  33         }
  34         return status;
  35     }
  36
  37     if (WIFSIGNALED(status)) {
  38         mesg = "signalled";
  39         num = WTERMSIG(status);
  40         if (num == SIGINT)
  41             return status;
  42         lookup = true;
  43     } else if (WIFSTOPPED(status)) {
  44         mesg = "stopped";
  45         num = WSTOPSIG(status);
  46         lookup = true;
  47     } else if (WIFCONTINUED(status)) {
  48         mesg = "continued";
  49         num = -1;
  50         lookup = false;
  51     } else {
  52         mesg = "bizarre wait(2) status";
  53         num = status;
  54         lookup = false;
  55     }
  56
  57     if (cp)
  58         fprintf(fp, "%s: ", cp);
  59     fputs(mesg, fp);
  60
  61     if (num != -1) {
  62         fprintf(fp, " %#x", num);
  63         if (lookup) {
  64             errno = 0;
  65             signame = strsignal(num);
  66             if (errno)
  67                 signame = "invalid";
  68             putc(' ', fp);
  69             fputs(signame, fp);
  70         }
  71     }
  72     if (WCOREDUMP(status))
  73         fputs(", core dumped", fp);
  74     putc('\n', fp);
  75
  76     return status;
  77 }