[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/string/strfry.c b/ap/libc/glibc/glibc-2.22/string/strfry.c
new file mode 100644
index 0000000..e4ecd3c
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/string/strfry.c
@@ -0,0 +1,52 @@
+/* Copyright (C) 1992-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+char *
+strfry (char *string)
+{
+ static int init;
+ static struct random_data rdata;
+
+ if (!init)
+ {
+ static char state[32];
+ rdata.state = NULL;
+ __initstate_r (time ((time_t *) NULL) ^ getpid (),
+ state, sizeof (state), &rdata);
+ init = 1;
+ }
+
+ size_t len = strlen (string);
+ if (len > 0)
+ for (size_t i = 0; i < len - 1; ++i)
+ {
+ int32_t j;
+ __random_r (&rdata, &j);
+ j = j % (len - i) + i;
+
+ char c = string[i];
+ string[i] = string[j];
+ string[j] = c;
+ }
+
+ return string;
+}