all: remove code which is not being considered in build

These xlators are now removed from build as per discussion/announcement
done at https://lists.gluster.org/pipermail/gluster-users/2018-July/034400.html

* move rot-13 to playground, as it is used only as demo
  purpose, and is documented in many places.

* Removed code of below xlators:
  - cluster/stripe
  - cluster/tier
  - features/changetimerecorder
  - features/glupy
  - performance/symlink-cache
  - encryption/crypt
  - storage/bd
  - experimental/posix2
  - experimental/dht2
  - experimental/fdl
  - experimental/jbr

updates: bz#1635688
Change-Id: I1d2d63c32535e149bc8dcb2daa76236c707996e8
Signed-off-by: Amar Tumballi <amarts@redhat.com>

4 files changed, 203 insertions, 0 deletions

diff --git a/xlators/playground/rot-13/Makefile.am b/xlators/playground/rot-13/Makefile.am
new file mode 100644
index 00000000000..d471a3f9243
--- /dev/null
+++ b/xlators/playground/rot-13/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES = 
diff --git a/xlators/playground/rot-13/src/Makefile.am b/xlators/playground/rot-13/src/Makefile.am
new file mode 100644
index 00000000000..9978661509d
--- /dev/null
+++ b/xlators/playground/rot-13/src/Makefile.am
@@ -0,0 +1,16 @@
+xlator_LTLIBRARIES = rot-13.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/encryption
+
+rot_13_la_LDFLAGS = -module $(GF_XLATOR_DEFAULT_LDFLAGS)
+
+rot_13_la_SOURCES = rot-13.c
+rot_13_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la 
+
+noinst_HEADERS = rot-13.h
+
+AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src \
+	-I$(top_srcdir)/rpc/xdr/src -I$(top_builddir)/rpc/xdr/src
+
+AM_CFLAGS = -Wall $(GF_CFLAGS)
+
+CLEANFILES = 
diff --git a/xlators/playground/rot-13/src/rot-13.c b/xlators/playground/rot-13/src/rot-13.c
new file mode 100644
index 00000000000..0f45ee31964
--- /dev/null
+++ b/xlators/playground/rot-13/src/rot-13.c
@@ -0,0 +1,166 @@
+/*
+   Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+#include <ctype.h>
+#include <sys/uio.h>
+
+#include <glusterfs/glusterfs.h>
+#include <glusterfs/xlator.h>
+#include <glusterfs/logging.h>
+
+#include "rot-13.h"
+
+/*
+ * This is a rot13 ``encryption'' xlator. It rot13's data when
+ * writing to disk and rot13's it back when reading it.
+ * This xlator is meant as an example, NOT FOR PRODUCTION
+ * USE ;) (hence no error-checking)
+ */
+
+void
+rot13(char *buf, int len)
+{
+    int i;
+    for (i = 0; i < len; i++) {
+        if (buf[i] >= 'a' && buf[i] <= 'z')
+            buf[i] = 'a' + ((buf[i] - 'a' + 13) % 26);
+        else if (buf[i] >= 'A' && buf[i] <= 'Z')
+            buf[i] = 'A' + ((buf[i] - 'A' + 13) % 26);
+    }
+}
+
+void
+rot13_iovec(struct iovec *vector, int count)
+{
+    int i;
+    for (i = 0; i < count; i++) {
+        rot13(vector[i].iov_base, vector[i].iov_len);
+    }
+}
+
+int32_t
+rot13_readv_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
+                int32_t op_ret, int32_t op_errno, struct iovec *vector,
+                int32_t count, struct iatt *stbuf, struct iobref *iobref,
+                dict_t *xdata)
+{
+    rot_13_private_t *priv = (rot_13_private_t *)this->private;
+
+    if (priv->decrypt_read)
+        rot13_iovec(vector, count);
+
+    STACK_UNWIND_STRICT(readv, frame, op_ret, op_errno, vector, count, stbuf,
+                        iobref, xdata);
+    return 0;
+}
+
+int32_t
+rot13_readv(call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
+            off_t offset, uint32_t flags, dict_t *xdata)
+{
+    STACK_WIND(frame, rot13_readv_cbk, FIRST_CHILD(this),
+               FIRST_CHILD(this)->fops->readv, fd, size, offset, flags, xdata);
+    return 0;
+}
+
+int32_t
+rot13_writev_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
+                 int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                 struct iatt *postbuf, dict_t *xdata)
+{
+    STACK_UNWIND_STRICT(writev, frame, op_ret, op_errno, prebuf, postbuf,
+                        xdata);
+    return 0;
+}
+
+int32_t
+rot13_writev(call_frame_t *frame, xlator_t *this, fd_t *fd,
+             struct iovec *vector, int32_t count, off_t offset, uint32_t flags,
+             struct iobref *iobref, dict_t *xdata)
+{
+    rot_13_private_t *priv = (rot_13_private_t *)this->private;
+    if (priv->encrypt_write)
+        rot13_iovec(vector, count);
+
+    STACK_WIND(frame, rot13_writev_cbk, FIRST_CHILD(this),
+               FIRST_CHILD(this)->fops->writev, fd, vector, count, offset,
+               flags, iobref, xdata);
+    return 0;
+}
+
+int32_t
+init(xlator_t *this)
+{
+    data_t *data = NULL;
+    rot_13_private_t *priv = NULL;
+
+    if (!this->children || this->children->next) {
+        gf_log("rot13", GF_LOG_ERROR,
+               "FATAL: rot13 should have exactly one child");
+        return -1;
+    }
+
+    if (!this->parents) {
+        gf_log(this->name, GF_LOG_WARNING, "dangling volume. check volfile ");
+    }
+
+    priv = GF_CALLOC(sizeof(rot_13_private_t), 1, 0);
+    if (!priv)
+        return -1;
+
+    priv->decrypt_read = 1;
+    priv->encrypt_write = 1;
+
+    data = dict_get(this->options, "encrypt-write");
+    if (data) {
+        if (gf_string2boolean(data->data, &priv->encrypt_write) == -1) {
+            gf_log(this->name, GF_LOG_ERROR,
+                   "encrypt-write takes only boolean options");
+            GF_FREE(priv);
+            return -1;
+        }
+    }
+
+    data = dict_get(this->options, "decrypt-read");
+    if (data) {
+        if (gf_string2boolean(data->data, &priv->decrypt_read) == -1) {
+            gf_log(this->name, GF_LOG_ERROR,
+                   "decrypt-read takes only boolean options");
+            GF_FREE(priv);
+            return -1;
+        }
+    }
+
+    this->private = priv;
+    gf_log("rot13", GF_LOG_DEBUG, "rot13 xlator loaded");
+    return 0;
+}
+
+void
+fini(xlator_t *this)
+{
+    rot_13_private_t *priv = this->private;
+
+    if (!priv)
+        return;
+    this->private = NULL;
+    GF_FREE(priv);
+
+    return;
+}
+
+struct xlator_fops fops = {.readv = rot13_readv, .writev = rot13_writev};
+
+struct xlator_cbks cbks;
+
+struct volume_options options[] = {
+    {.key = {"encrypt-write"}, .type = GF_OPTION_TYPE_BOOL},
+    {.key = {"decrypt-read"}, .type = GF_OPTION_TYPE_BOOL},
+    {.key = {NULL}},
+};
diff --git a/xlators/playground/rot-13/src/rot-13.h b/xlators/playground/rot-13/src/rot-13.h
new file mode 100644
index 00000000000..edbc99798b4
--- /dev/null
+++ b/xlators/playground/rot-13/src/rot-13.h
@@ -0,0 +1,18 @@
+/*
+   Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
+   This file is part of GlusterFS.
+
+   This file is licensed to you under your choice of the GNU Lesser
+   General Public License, version 3 or any later version (LGPLv3 or
+   later), or the GNU General Public License, version 2 (GPLv2), in all
+   cases as published by the Free Software Foundation.
+*/
+#ifndef __ROT_13_H__
+#define __ROT_13_H__
+
+typedef struct {
+    gf_boolean_t encrypt_write;
+    gf_boolean_t decrypt_read;
+} rot_13_private_t;
+
+#endif /* __ROT_13_H__ */