+ /* gnu tee ignores SIGPIPE in case one of the output files is a pipe
+ * that doesn't consume all its input. Good idea... */
+ signal(SIGPIPE, SIG_IGN); /* TODO - switch to sigaction.*/
+
+ /* Allocate an array of FILE *'s, with one extra for a sentinal. */
+ p = files = (FILE **)xmalloc(sizeof(FILE *) * (argc - optind + 2));
+ *p = stdout;
+ argv += optind - 1;
+ filenames = argv - 1;
+ *filenames = (char *) bb_msg_standard_input; /* for later */
+ goto GOT_NEW_FILE;
+
+ do {
+ if ((*p = bb_wfopen(*argv, mode)) == NULL) {
+ retval = EXIT_FAILURE;
+ continue;
+ }
+ filenames[(int)(p - files)] = *argv;
+ GOT_NEW_FILE:
+ setbuf(*p, NULL); /* tee must not buffer output. */
+ ++p;
+ } while (*++argv);
+
+ *p = NULL; /* Store the sentinal value. */
+
+#ifdef CONFIG_FEATURE_TEE_USE_BLOCK_IO
+ while ((c = fread(buf, 1, BUFSIZ, stdin)) != 0) {
+ for (p=files ; *p ; p++) {
+ fwrite(buf, 1, c, *p);
+ }
+ }