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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2010-05-17 10:12:46 +0900
committerJames Morris <jmorris@namei.org>2010-08-02 15:33:39 +1000
commitc3ef1500ec833890275172c7d063333404b64d60 (patch)
tree2453368e521a1f7a00098eef06afbedb8404503d /security/tomoyo/securityfs_if.c
parent17fcfbd9d45b57f38d40e31f9d28db53f4af5c88 (diff)
downloadlinux-linaro-stable-c3ef1500ec833890275172c7d063333404b64d60.tar.gz
TOMOYO: Split files into some pieces.
security/tomoyo/common.c became too large to read. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo/securityfs_if.c')
-rw-r--r--security/tomoyo/securityfs_if.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/security/tomoyo/securityfs_if.c b/security/tomoyo/securityfs_if.c
new file mode 100644
index 000000000000..5eb53510c4a7
--- /dev/null
+++ b/security/tomoyo/securityfs_if.c
@@ -0,0 +1,140 @@
+/*
+ * security/tomoyo/common.c
+ *
+ * Securityfs interface for TOMOYO.
+ *
+ * Copyright (C) 2005-2010 NTT DATA CORPORATION
+ */
+
+#include <linux/security.h>
+#include "common.h"
+
+/**
+ * tomoyo_open - open() for /sys/kernel/security/tomoyo/ interface.
+ *
+ * @inode: Pointer to "struct inode".
+ * @file: Pointer to "struct file".
+ *
+ * Returns 0 on success, negative value otherwise.
+ */
+static int tomoyo_open(struct inode *inode, struct file *file)
+{
+ const int key = ((u8 *) file->f_path.dentry->d_inode->i_private)
+ - ((u8 *) NULL);
+ return tomoyo_open_control(key, file);
+}
+
+/**
+ * tomoyo_release - close() for /sys/kernel/security/tomoyo/ interface.
+ *
+ * @inode: Pointer to "struct inode".
+ * @file: Pointer to "struct file".
+ *
+ * Returns 0 on success, negative value otherwise.
+ */
+static int tomoyo_release(struct inode *inode, struct file *file)
+{
+ return tomoyo_close_control(file);
+}
+
+/**
+ * tomoyo_read - read() for /sys/kernel/security/tomoyo/ interface.
+ *
+ * @file: Pointer to "struct file".
+ * @buf: Pointer to buffer.
+ * @count: Size of @buf.
+ * @ppos: Unused.
+ *
+ * Returns bytes read on success, negative value otherwise.
+ */
+static ssize_t tomoyo_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ return tomoyo_read_control(file, buf, count);
+}
+
+/**
+ * tomoyo_write - write() for /sys/kernel/security/tomoyo/ interface.
+ *
+ * @file: Pointer to "struct file".
+ * @buf: Pointer to buffer.
+ * @count: Size of @buf.
+ * @ppos: Unused.
+ *
+ * Returns @count on success, negative value otherwise.
+ */
+static ssize_t tomoyo_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ return tomoyo_write_control(file, buf, count);
+}
+
+/*
+ * tomoyo_operations is a "struct file_operations" which is used for handling
+ * /sys/kernel/security/tomoyo/ interface.
+ *
+ * Some files under /sys/kernel/security/tomoyo/ directory accept open(O_RDWR).
+ * See tomoyo_io_buffer for internals.
+ */
+static const struct file_operations tomoyo_operations = {
+ .open = tomoyo_open,
+ .release = tomoyo_release,
+ .read = tomoyo_read,
+ .write = tomoyo_write,
+};
+
+/**
+ * tomoyo_create_entry - Create interface files under /sys/kernel/security/tomoyo/ directory.
+ *
+ * @name: The name of the interface file.
+ * @mode: The permission of the interface file.
+ * @parent: The parent directory.
+ * @key: Type of interface.
+ *
+ * Returns nothing.
+ */
+static void __init tomoyo_create_entry(const char *name, const mode_t mode,
+ struct dentry *parent, const u8 key)
+{
+ securityfs_create_file(name, mode, parent, ((u8 *) NULL) + key,
+ &tomoyo_operations);
+}
+
+/**
+ * tomoyo_initerface_init - Initialize /sys/kernel/security/tomoyo/ interface.
+ *
+ * Returns 0.
+ */
+static int __init tomoyo_initerface_init(void)
+{
+ struct dentry *tomoyo_dir;
+
+ /* Don't create securityfs entries unless registered. */
+ if (current_cred()->security != &tomoyo_kernel_domain)
+ return 0;
+
+ tomoyo_dir = securityfs_create_dir("tomoyo", NULL);
+ tomoyo_create_entry("query", 0600, tomoyo_dir,
+ TOMOYO_QUERY);
+ tomoyo_create_entry("domain_policy", 0600, tomoyo_dir,
+ TOMOYO_DOMAINPOLICY);
+ tomoyo_create_entry("exception_policy", 0600, tomoyo_dir,
+ TOMOYO_EXCEPTIONPOLICY);
+ tomoyo_create_entry("self_domain", 0400, tomoyo_dir,
+ TOMOYO_SELFDOMAIN);
+ tomoyo_create_entry(".domain_status", 0600, tomoyo_dir,
+ TOMOYO_DOMAIN_STATUS);
+ tomoyo_create_entry(".process_status", 0600, tomoyo_dir,
+ TOMOYO_PROCESS_STATUS);
+ tomoyo_create_entry("meminfo", 0600, tomoyo_dir,
+ TOMOYO_MEMINFO);
+ tomoyo_create_entry("profile", 0600, tomoyo_dir,
+ TOMOYO_PROFILE);
+ tomoyo_create_entry("manager", 0600, tomoyo_dir,
+ TOMOYO_MANAGER);
+ tomoyo_create_entry("version", 0400, tomoyo_dir,
+ TOMOYO_VERSION);
+ return 0;
+}
+
+fs_initcall(tomoyo_initerface_init);