1 files changed, 87 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/roken/mkdtemp.c b/third_party/heimdal/lib/roken/mkdtemp.c
new file mode 100644
index 00000000000..b106add3278
--- /dev/null
+++ b/third_party/heimdal/lib/roken/mkdtemp.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2020 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <string.h>
+#include <errno.h>
+
+#include <roken.h>
+
+#ifndef O_APPEND
+#define O_APPEND 0
+#endif
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+#ifndef O_SYNC
+#define O_SYNC 0
+#endif
+
+#ifndef HAVE_MKDTEMP
+ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
+mkdtemp(char *template)
+{
+    size_t len = strlen(template) - 1;
+    size_t start, i;
+    pid_t val = getpid();
+
+    for (i = 0; i < len && i < 7 && template[len - i] == 'X'; i++) {
+	template[len] = '0' + val % 10;
+	val /= 10;
+	len--;
+        if (!val)
+            val = getpid();
+    }
+
+    if (i < 6) {
+        errno = EINVAL;
+        return NULL;
+    }
+
+    start = len - i;
+    do {
+        if (mkdir(template, 0700) == 0)
+            return template;
+	for (i = start + 1; i < len; i++) {
+	    if (++(template[i]) == '9' + 1)
+		template[i] = 'a';
+	    if (template[i] <= 'z')
+		break;
+	    template[i] = 'a';
+	}
+    } while(1);
+}
+#endif