1 files changed, 62 insertions, 2 deletions
diff --git a/ports/unix/guts/mkfifoat.c b/ports/unix/guts/mkfifoat.c
index 3497f37..4101a72 100644
--- a/ports/unix/guts/mkfifoat.c
+++ b/ports/unix/guts/mkfifoat.c
@@ -1,5 +1,5 @@
 /* 
- * Copyright (c) 2008-2010 Wind River Systems; see
+ * Copyright (c) 2015 Wind River Systems; see
  * guts/COPYRIGHT for information.
  *
  * static int
@@ -7,7 +7,67 @@
  *	int rc = -1;
  */
 
-	rc = wrap_mknodat(dirfd, path, (mode & 07777) | S_IFIFO, (dev_t) 0);
+ 	pseudo_msg_t *msg;
+	PSEUDO_STATBUF buf;
+        int save_errno = errno;
+
+	/* mask out mode bits appropriately */
+	mode = mode & ~pseudo_umask;
+
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+	if (dirfd != AT_FDCWD) {
+		errno = ENOSYS;
+		return -1;
+	}
+	rc = base_stat(path, &buf);
+#else
+	rc = base_fstatat(dirfd, path, &buf, AT_SYMLINK_NOFOLLOW);
+#endif
+	if (rc != -1) {
+		/* if we can stat the file, you can't mkfifo it */
+		errno = EEXIST;
+		return -1;
+	}
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+	rc = real_mkfifo(path, PSEUDO_FS_MODE(mode, 0));
+	if (rc == -1) {
+		return -1;
+	}
+	rc = base_stat(path, &buf);
+#else
+	rc = real_mkfifoat(dirfd, path, PSEUDO_FS_MODE(mode, 0));
+	if (rc == -1) {
+		return -1;
+	}
+	rc = base_fstatat(dirfd, path, &buf, AT_SYMLINK_NOFOLLOW);
+#endif
+	/* if the stat failed, we are going to give up and nuke
+	 * any file we may have created, and hope for the best.
+	 */
+	if (rc == 0) {
+		buf.st_mode = PSEUDO_DB_MODE(buf.st_mode, mode);
+		/* mkfifo/mknod are the same op, in that they create a file
+		 * with a non-file type.
+		 */
+		msg = pseudo_client_op(OP_MKNOD, 0, -1, dirfd, path, &buf);
+		if (msg && msg->result != RESULT_SUCCEED) {
+			errno = EPERM;
+			rc = -1;
+		} else {
+			/* just pretend we worked */
+			errno = save_errno;
+			rc = 0;
+		}
+	}
+	if (rc == -1) {
+                save_errno = errno;
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+		real_unlink(path);
+#else
+		real_unlinkat(dirfd, path, AT_SYMLINK_NOFOLLOW);
+#endif
+		errno = save_errno;
+	}
 
 /*	return rc;
  * }