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Diffstat (limited to 'xlators/features/selinux/src/selinux.c')
-rw-r--r--xlators/features/selinux/src/selinux.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/xlators/features/selinux/src/selinux.c b/xlators/features/selinux/src/selinux.c
new file mode 100644
index 00000000000..1a4b39f253c
--- /dev/null
+++ b/xlators/features/selinux/src/selinux.c
@@ -0,0 +1,324 @@
+/*
+ Copyright (c) 2017 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 "xlator.h"
+
+#include "selinux.h"
+#include "selinux-messages.h"
+#include "selinux-mem-types.h"
+#include "compat-errno.h"
+
+static int
+selinux_fgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, dict_t *dict, dict_t *xdata)
+{
+ int ret = 0;
+ char *name = cookie;
+
+ if (op_errno == 0 && name && (!strcmp(name, SELINUX_GLUSTER_XATTR))) {
+ ret = dict_rename_key (dict, SELINUX_GLUSTER_XATTR,
+ SELINUX_XATTR);
+ if (ret < 0)
+ gf_msg (this->name, GF_LOG_ERROR, op_errno,
+ SL_MSG_SELINUX_GLUSTER_XATTR_MISSING,
+ "getxattr failed for %s", SELINUX_XATTR);
+
+ }
+
+ STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno,
+ dict, xdata);
+ return ret;
+}
+
+
+static int
+selinux_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
+ const char *name, dict_t *xdata)
+{
+ selinux_priv_t *priv = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = EINVAL;
+ char *xattr_name = (char *) name;
+
+ priv = this->private;
+
+ GF_VALIDATE_OR_GOTO ("selinux", priv, err);
+
+ /* name can be NULL for listxattr calls */
+ if (!priv->selinux_enabled || !name)
+ goto off;
+
+ if (strcmp (name, SELINUX_XATTR) == 0)
+ xattr_name = SELINUX_GLUSTER_XATTR;
+
+off:
+ STACK_WIND_COOKIE (frame, selinux_fgetxattr_cbk, xattr_name,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->fgetxattr, fd, xattr_name,
+ xdata);
+ return 0;
+err:
+ STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno, NULL, xdata);
+
+ return 0;
+}
+
+static int
+selinux_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, dict_t *dict, dict_t *xdata)
+{
+ int ret = 0;
+ char *name = cookie;
+
+ if (op_errno == 0 && name && (!strcmp(name, SELINUX_GLUSTER_XATTR))) {
+ ret = dict_rename_key (dict, SELINUX_GLUSTER_XATTR,
+ SELINUX_XATTR);
+ if (ret < 0)
+ gf_msg (this->name, GF_LOG_ERROR, op_errno,
+ SL_MSG_SELINUX_GLUSTER_XATTR_MISSING,
+ "getxattr failed for %s", SELINUX_XATTR);
+
+ }
+
+ STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict, xdata);
+
+ return 0;
+}
+
+
+static int
+selinux_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+ const char *name, dict_t *xdata)
+{
+ selinux_priv_t *priv = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = EINVAL;
+ char *xattr_name = (char *) name;
+
+ priv = this->private;
+
+ GF_VALIDATE_OR_GOTO ("selinux", priv, err);
+
+ /* name can be NULL for listxattr calls */
+ if (!priv->selinux_enabled || !name)
+ goto off;
+
+ if (strcmp (name, SELINUX_XATTR) == 0)
+ xattr_name = SELINUX_GLUSTER_XATTR;
+
+off:
+ STACK_WIND_COOKIE (frame, selinux_getxattr_cbk, xattr_name,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->getxattr, loc, xattr_name,
+ xdata);
+ return 0;
+err:
+ STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, NULL, xdata);
+ return 0;
+}
+
+static int
+selinux_fsetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, dict_t *xdata)
+{
+ STACK_UNWIND_STRICT (fsetxattr, frame, op_ret, op_errno, xdata);
+ return 0;
+
+}
+
+
+static int
+selinux_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict,
+ int flags, dict_t *xdata)
+{
+ selinux_priv_t *priv = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = EINVAL;
+ int32_t ret = -1;
+
+ priv = this->private;
+
+ GF_VALIDATE_OR_GOTO ("selinux", priv, err);
+
+ if (!priv->selinux_enabled)
+ goto off;
+
+ ret = dict_rename_key (dict, SELINUX_XATTR, SELINUX_GLUSTER_XATTR);
+ if (ret < 0 && ret != -ENODATA)
+ goto err;
+
+off:
+ STACK_WIND (frame, selinux_fsetxattr_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags,
+ xdata);
+
+
+ return 0;
+err:
+ STACK_UNWIND_STRICT (fsetxattr, frame, op_ret, op_errno, xdata);
+ return 0;
+
+}
+
+static int
+selinux_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, dict_t *xdata)
+{
+ STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno, xdata);
+ return 0;
+}
+
+
+static int
+selinux_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+ dict_t *dict, int flags, dict_t *xdata)
+{
+ selinux_priv_t *priv = NULL;
+ int32_t op_ret = -1;
+ int32_t op_errno = EINVAL;
+ int32_t ret = -1;
+
+ priv = this->private;
+
+ GF_VALIDATE_OR_GOTO ("selinux", priv, err);
+
+ if (!priv->selinux_enabled)
+ goto off;
+
+ ret = dict_rename_key (dict, SELINUX_XATTR, SELINUX_GLUSTER_XATTR);
+ if (ret < 0 && ret != -ENODATA)
+ goto err;
+
+off:
+ STACK_WIND (frame, selinux_setxattr_cbk, FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->setxattr, loc, dict, flags,
+ xdata);
+ return 0;
+err:
+ STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno, xdata);
+ return 0;
+}
+
+int32_t
+mem_acct_init (xlator_t *this)
+{
+ int ret = -1;
+
+ GF_VALIDATE_OR_GOTO("selinux", this, out);
+
+ ret = xlator_mem_acct_init (this, gf_selinux_mt_end + 1);
+
+ if (ret != 0) {
+ gf_msg (this->name, GF_LOG_ERROR, 0,
+ SL_MSG_MEM_ACCT_INIT_FAILED,
+ "Memory accounting init failed");
+ return ret;
+ }
+out:
+ return ret;
+}
+
+int32_t
+init (xlator_t *this)
+{
+ int32_t ret = -1;
+ selinux_priv_t *priv = NULL;
+
+ GF_VALIDATE_OR_GOTO ("selinux", this, out);
+
+ if (!this->children || this->children->next) {
+ gf_msg (this->name, GF_LOG_WARNING, 0, SL_MSG_INVALID_VOLFILE,
+ "Error: SELinux (%s) not configured with exactly one "
+ "child", this->name);
+ return -1;
+ }
+
+ if (this->parents == NULL) {
+ gf_msg (this->name, GF_LOG_WARNING, 0, SL_MSG_INVALID_VOLFILE,
+ "Dangling volume. Please check the volfile");
+ }
+
+ priv = GF_CALLOC (1, sizeof (*priv), gf_selinux_mt_selinux_priv_t);
+ if (!priv) {
+ gf_log (this->name, GF_LOG_ERROR, "out of memory");
+ ret = ENOMEM;
+ goto out;
+ }
+
+ GF_OPTION_INIT ("selinux", priv->selinux_enabled, bool, out);
+
+ this->local_pool = mem_pool_new (selinux_priv_t, 64);
+ if (!this->local_pool) {
+ ret = -1;
+ gf_msg (this->name, GF_LOG_ERROR, ENOMEM, SL_MSG_ENOMEM,
+ "Failed to create local_t's memory pool");
+ goto out;
+ }
+
+ this->private = (void *)priv;
+ ret = 0;
+out:
+ if (ret) {
+ if (priv) {
+ GF_FREE (priv);
+ }
+ mem_pool_destroy (this->local_pool);
+ }
+ return ret;
+}
+
+int
+reconfigure (xlator_t *this, dict_t *options)
+{
+ int32_t ret = -1;
+ selinux_priv_t *priv = NULL;
+
+ priv = this->private;
+
+ GF_OPTION_RECONF ("selinux", priv->selinux_enabled, options,
+ bool, out);
+
+ ret = 0;
+out:
+ return ret;
+
+}
+
+void
+fini (xlator_t *this)
+{
+ selinux_priv_t *priv = NULL;
+
+ priv = this->private;
+ GF_FREE (priv);
+
+ mem_pool_destroy (this->local_pool);
+
+ return;
+}
+
+struct xlator_fops fops = {
+ .getxattr = selinux_getxattr,
+ .fgetxattr = selinux_fgetxattr,
+ .setxattr = selinux_setxattr,
+ .fsetxattr = selinux_fsetxattr,
+};
+
+struct xlator_cbks cbks = {
+};
+
+struct volume_options options[] = {
+ { .key = { "selinux" },
+ .type = GF_OPTION_TYPE_BOOL,
+ .default_value = "on",
+ .description = "Enable/disable selinux translator",
+ },
+ { .key = { NULL }, }
+};
generated by cgit (git 2.34.1) at 2024-11-17 12:13:06 +0000