added features/mac-compat

Signed-off-by: Csaba Henk <csaba@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 800 (Problem on OSX with NFS and CIFS exports)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=800

3 files changed, 263 insertions, 0 deletions

diff --git a/xlators/features/mac-compat/Makefile.am b/xlators/features/mac-compat/Makefile.am
new file mode 100644
index 00000000000..d471a3f9243
--- /dev/null
+++ b/xlators/features/mac-compat/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES = 
diff --git a/xlators/features/mac-compat/src/Makefile.am b/xlators/features/mac-compat/src/Makefile.am
new file mode 100644
index 00000000000..915c13e308f
--- /dev/null
+++ b/xlators/features/mac-compat/src/Makefile.am
@@ -0,0 +1,13 @@
+xlator_LTLIBRARIES = mac-compat.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/features
+
+mac_compat_la_LDFLAGS = -module -avoidversion
+
+mac_compat_la_SOURCES = mac-compat.c
+mac_compat_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la
+
+AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS) \
+	-I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS)
+
+CLEANFILES = 
+
diff --git a/xlators/features/mac-compat/src/mac-compat.c b/xlators/features/mac-compat/src/mac-compat.c
new file mode 100644
index 00000000000..649d2ad5db4
--- /dev/null
+++ b/xlators/features/mac-compat/src/mac-compat.c
@@ -0,0 +1,247 @@
+/*
+  Copyright (c) 2008-2010 Gluster, Inc. <http://www.gluster.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+#include "defaults.h"
+#include "compat-errno.h"
+
+
+enum apple_xattr {
+        GF_FINDER_INFO_XATTR,
+        GF_RESOURCE_FORK_XATTR,
+        GF_XATTR_ALL,
+        GF_XATTR_NONE
+};
+
+static char *apple_xattr_name[] = {
+        [GF_FINDER_INFO_XATTR]   = "com.apple.FinderInfo",
+        [GF_RESOURCE_FORK_XATTR] = "com.apple.ResourceFork"
+};
+
+static const char *apple_xattr_value[] = {
+        [GF_FINDER_INFO_XATTR]   =
+        /* 1 2 3 4 5 6 7 8 */
+         "\0\0\0\0\0\0\0\0"
+         "\0\0\0\0\0\0\0\0"
+         "\0\0\0\0\0\0\0\0"
+         "\0\0\0\0\0\0\0\0",
+        [GF_RESOURCE_FORK_XATTR] = ""
+};
+
+static int32_t apple_xattr_len[] = {
+        [GF_FINDER_INFO_XATTR]   = 32,
+        [GF_RESOURCE_FORK_XATTR] = 1
+};
+
+
+int32_t
+maccomp_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno, dict_t *dict)
+{
+        intptr_t ax = (intptr_t)this->private;
+        int i = 0;
+
+        if ((ax == GF_XATTR_ALL && op_ret >= 0) || ax != GF_XATTR_NONE) {
+                op_ret = op_errno = 0;
+
+                for (i = 0; i < GF_XATTR_ALL; i++) {
+                        if (dict_get (dict, apple_xattr_name[i]))
+                                continue;
+
+                        if (dict_set (dict, apple_xattr_name[i],
+                                      bin_to_data ((void *)apple_xattr_value[i],
+                                                   apple_xattr_len[i])) == -1) {
+                                op_ret = -1;
+                                op_errno = ENOMEM;
+
+                                break;
+                        }
+                }
+         }
+
+        STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict);
+
+        return 0;
+}
+
+
+int32_t
+maccomp_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                  const char *name)
+{
+        intptr_t ax = GF_XATTR_NONE;
+        int i = 0;
+
+        if (name) {
+                for (i = 0; i < GF_XATTR_ALL; i++) {
+                        if (strcmp (apple_xattr_name[i], name) == 0) {
+                                ax = i;
+
+                                break;
+                        }
+                }
+        } else
+                ax = GF_XATTR_ALL;
+
+        this->private = (void *)ax;
+
+        STACK_WIND (frame, maccomp_getxattr_cbk,
+                    FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->getxattr,
+                    loc, name);
+        return 0;
+}
+
+
+int32_t
+maccomp_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                   const char *name)
+{
+        intptr_t ax = GF_XATTR_NONE;
+        int i = 0;
+
+        if (name) {
+                for (i = 0; i < GF_XATTR_ALL; i++) {
+                        if (strcmp (apple_xattr_name[i], name) == 0) {
+                                ax = i;
+
+                                break;
+                        }
+                }
+        } else
+                ax = GF_XATTR_ALL;
+
+        this->private = (void *)ax;
+
+        STACK_WIND (frame, maccomp_getxattr_cbk,
+                    FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fgetxattr,
+                    fd, name);
+        return 0;
+}
+
+
+int32_t
+maccomp_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                      int32_t op_ret, int32_t op_errno)
+{
+        intptr_t ax = (intptr_t)this->private;
+
+        if (op_ret == -1 && ax != GF_XATTR_NONE)
+                op_ret = op_errno = 0;
+
+        STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno);
+
+        return 0;
+}
+
+
+int32_t
+maccomp_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *dict,
+                  int32_t flags)
+{
+        intptr_t ax = GF_XATTR_NONE;
+        int i = 0;
+
+        for (i = 0; i < GF_XATTR_ALL; i++) {
+                if (dict_get (dict, apple_xattr_name[i])) {
+                        ax = i;
+
+                        break;
+                }
+        }
+
+        this->private = (void *)ax;
+
+        STACK_WIND (frame, maccomp_setxattr_cbk,
+                    FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->setxattr,
+                    loc, dict, flags);
+        return 0;
+}
+
+
+int32_t
+maccomp_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict,
+                   int32_t flags)
+{
+        intptr_t ax = GF_XATTR_NONE;
+        int i = 0;
+
+        for (i = 0; i < GF_XATTR_ALL; i++) {
+                if (dict_get (dict, apple_xattr_name[i])) {
+                        ax = i;
+
+                        break;
+                }
+        }
+
+        this->private = (void *)ax;
+
+        STACK_WIND (frame, maccomp_setxattr_cbk,
+                    FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->fsetxattr,
+                    fd, dict, flags);
+        return 0;
+}
+
+
+int32_t
+init (xlator_t *this)
+{
+        if (!this->children || this->children->next) {
+                gf_log (this->name, GF_LOG_ERROR,
+                        "translator not configured with exactly one child");
+                return -1;
+        }
+
+        if (!this->parents) {
+                gf_log (this->name, GF_LOG_WARNING,
+                        "dangling volume. check volfile ");
+        }
+
+        return 0;
+}
+
+
+void
+fini (xlator_t *this)
+{
+        return;
+}
+
+
+struct xlator_fops fops = {
+        .getxattr    = maccomp_getxattr,
+        .fgetxattr   = maccomp_fgetxattr,
+        .setxattr    = maccomp_setxattr,
+        .fsetxattr   = maccomp_fsetxattr,
+};
+
+struct xlator_cbks cbks = {
+};
+
+struct volume_options options[] = {
+        { .key = {NULL} },
+};