7475 savecore should not go further if there is no dumpfile

*** 70,79 ****
--- 70,80 ----
  static char     *savedir;               /* savecore directory */
  static char     *dumpfile;              /* source of raw crash dump */
  static long     bounds = -1;            /* numeric suffix */
  static long     pagesize;               /* dump pagesize */
  static int      dumpfd = -1;            /* dumpfile descriptor */
+ static boolean_t have_dumpfile = B_TRUE;        /* dumpfile existence */
  static dumphdr_t corehdr, dumphdr;      /* initial and terminal dumphdrs */
  static boolean_t dump_incomplete;       /* dumphdr indicates incomplete */
  static boolean_t fm_panic;              /* dump is the result of fm_panic */
  static offset_t endoff;                 /* offset of end-of-dump header */
  static int      verbose;                /* chatty mode */
*** 237,247 ****
                  code = 3;
                  break;
  
          case SC_EXIT_ERR:
          default:
!                 if (!mflag && logprint_raised++ == 0)
                          raise_event(SC_EVENT_SAVECORE_FAILURE, buf);
                  code = 1;
                  break;
          }
  
--- 238,248 ----
                  code = 3;
                  break;
  
          case SC_EXIT_ERR:
          default:
!                 if (!mflag && logprint_raised++ == 0 && have_dumpfile)
                          raise_event(SC_EVENT_SAVECORE_FAILURE, buf);
                  code = 1;
                  break;
          }
  
*** 297,309 ****
  }
  
  static void
  Stat(const char *fname, Stat_t *sb)
  {
!         if (stat64(fname, sb) != 0)
!                 logprint(SC_SL_ERR | SC_EXIT_ERR, "stat(\"%s\"): %s", fname,
!                     strerror(errno));
  }
  
  static void
  Pread(int fd, void *buf, size_t size, offset_t off)
  {
--- 298,312 ----
  }
  
  static void
  Stat(const char *fname, Stat_t *sb)
  {
!         if (stat64(fname, sb) != 0) {
!                 have_dumpfile = B_FALSE;
!                 logprint(SC_SL_ERR | SC_EXIT_ERR, "failed to get status "
!                     "of file %s", fname);
!         }
  }
  
  static void
  Pread(int fd, void *buf, size_t size, offset_t off)
  {
*** 1709,1722 ****
          if (dumpfile == NULL || livedump)
                  dumpfd = Open("/dev/dump", O_RDONLY, 0444);
  
          if (dumpfile == NULL) {
                  dumpfile = Zalloc(MAXPATHLEN);
!                 if (ioctl(dumpfd, DIOCGETDEV, dumpfile) == -1)
                          logprint(SC_SL_NONE | SC_IF_ISATTY | SC_EXIT_ERR,
                              "no dump device configured");
          }
  
          if (mflag)
                  return (message_save());
  
          if (optind == argc - 1)
--- 1712,1727 ----
          if (dumpfile == NULL || livedump)
                  dumpfd = Open("/dev/dump", O_RDONLY, 0444);
  
          if (dumpfile == NULL) {
                  dumpfile = Zalloc(MAXPATHLEN);
!                 if (ioctl(dumpfd, DIOCGETDEV, dumpfile) == -1) {
!                         have_dumpfile  = B_FALSE;
                          logprint(SC_SL_NONE | SC_IF_ISATTY | SC_EXIT_ERR,
                              "no dump device configured");
                  }
+         }
  
          if (mflag)
                  return (message_save());
  
          if (optind == argc - 1)