This patch provides the securityfs used by SLIM.
Signed-off-by: Mimi Zohar <[email protected]>
Signed-off-by: Kylene Hall <[email protected]>
---
security/slim/slm_secfs.c | 73 ++++++++++++++++++++++++++++++++++++
1 files changed, 73 insertions(+)
--- linux-2.6.17/security/slim/slm_secfs.c 1969-12-31 16:00:00.000000000 -0800
+++ linux-2.6.17/security/slim/slm_secfs.c 2006-07-13 16:28:17.000000000 -0700
@@ -0,0 +1,73 @@
+/*
+ * SLIM securityfs support: debugging control files
+ *
+ * Copyright (C) 2005, 2006 IBM Corporation
+ * Author: Mimi Zohar <[email protected]>
+ * Kylene Hall <[email protected]>
+ *
+ * This program 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, version 2 of the License.
+ */
+
+#include <asm/uaccess.h>
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/security.h>
+#include <linux/debugfs.h>
+#include "slim.h"
+
+static struct dentry *slim_sec_dir, *slim_level;
+
+static ssize_t slm_read_level(struct file *file, char __user *buf,
+ size_t buflen, loff_t *ppos)
+{
+ struct slm_tsec_data *cur_tsec = current->security;
+ ssize_t len;
+ char *page = (char *)__get_free_page(GFP_KERNEL);
+
+ if (!page)
+ return -ENOMEM;
+
+ if (is_kernel_thread(current))
+ len = sprintf(page, "level: KERNEL\n");
+ else if (!cur_tsec)
+ len = sprintf(page, "level: UNKNOWN\n");
+ else {
+ if (cur_tsec->iac_wx != cur_tsec->iac_r)
+ len = sprintf(page, "level: GUARD wx:%s r:%s\n",
+ slm_iac_str[cur_tsec->iac_wx],
+ slm_iac_str[cur_tsec->iac_r]);
+ else
+ len = sprintf(page, "level: %s\n",
+ slm_iac_str[cur_tsec->iac_wx]);
+ }
+ len = simple_read_from_buffer(buf, buflen, ppos, page, len);
+ free_page((unsigned long)page);
+ return len;
+}
+
+static struct file_operations slm_level_ops = {
+ .read = slm_read_level,
+};
+
+int __init slm_init_secfs(void)
+{
+ slim_sec_dir = securityfs_create_dir("slim", NULL);
+ if (!slim_sec_dir || IS_ERR(slim_sec_dir))
+ return -EFAULT;
+ slim_level = securityfs_create_file("level", S_IRUGO,
+ slim_sec_dir, NULL, &slm_level_ops);
+ if (!slim_level || IS_ERR(slim_level)) {
+ securityfs_remove(slim_sec_dir);
+ return -EFAULT;
+ }
+ return 0;
+}
+
+void __exit slm_cleanup_secfs(void)
+{
+ securityfs_remove(slim_level);
+ securityfs_remove(slim_sec_dir);
+}
-
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