fs/proc/ccs_proc.c


/*
 * fs/proc/ccs_proc.c
 *
 * /proc interface for SAKURA and TOMOYO.
 *
 * Copyright (C) 2005-2007  NTT DATA CORPORATION
 *
 * Version: 1.3.3   2007/04/01
 *
 * This file is applicable to both 2.4.30 and 2.6.11 and later.
 * See README.ccs for ChangeLog.
 *
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <linux/proc_fs.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/ccs_proc.h>
#include <linux/ccs_common.h>

#if defined(CONFIG_SAKURA) || defined(CONFIG_TOMOYO)

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23)
static inline struct proc_dir_entry *PDE(const struct inode *inode)
{
        return (struct proc_dir_entry *) inode->u.generic_ip;
}
#endif

static int ccs_open(struct inode *inode, struct file *file)
{
        return CCS_OpenControl(((u8 *) PDE(inode)->data) - ((u8 *) NULL), file);
}

static int ccs_release(struct inode *inode, struct file *file)
{
        return CCS_CloseControl(file);
}

static unsigned int ccs_poll(struct file *file, poll_table *wait)
{
        return CCS_PollControl(file, wait);
}

static ssize_t ccs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
        return CCS_ReadControl(file, buf, count);
}

static ssize_t ccs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
        return CCS_WriteControl(file, buf, count);
}

static struct file_operations ccs_operations = {
        open:    ccs_open,
        release: ccs_release,
        poll:    ccs_poll,
        read:    ccs_read,
        write:   ccs_write
};

static __init void CreateEntry(const char *name, const mode_t mode, struct proc_dir_entry *parent, const int key)
{
        struct proc_dir_entry *entry = create_proc_entry(name, mode, parent);
        if (entry) {
                entry->proc_fops = &ccs_operations;
                entry->data = ((u8 *) NULL) + key;
        }
}

void __init CCSProc_Init(void)
{
        struct proc_dir_entry *ccs_dir = proc_mkdir("ccs", NULL);
        struct proc_dir_entry *policy_dir = proc_mkdir("policy", ccs_dir),
                *info_dir = proc_mkdir("info", ccs_dir);
        extern void __init realpath_Init(void);
        realpath_Init();
        FindDomain(""); /* Set domainname of KERNEL domain. */
        CreateEntry("query",            0600, policy_dir, CCS_POLICY_QUERY);
#ifdef CONFIG_SAKURA
        CreateEntry("system_policy",    0600, policy_dir, CCS_POLICY_SYSTEMPOLICY);
#endif
#ifdef CONFIG_TOMOYO
        CreateEntry("domain_policy",    0600, policy_dir, CCS_POLICY_DOMAINPOLICY);
        CreateEntry("exception_policy", 0600, policy_dir, CCS_POLICY_EXCEPTIONPOLICY);
        CreateEntry(".domain_status",   0600, policy_dir, CCS_POLICY_DOMAIN_STATUS);
        CreateEntry(".process_status",  0400, info_dir, CCS_INFO_PROCESS_STATUS);
#ifdef CONFIG_TOMOYO_AUDIT
        CreateEntry("grant_log",        0400, info_dir, CCS_INFO_GRANTLOG);
        CreateEntry("reject_log",       0400, info_dir, CCS_INFO_REJECTLOG);
#endif
        CreateEntry("self_domain",      0400, info_dir, CCS_INFO_SELFDOMAIN);
#ifdef CONFIG_TOMOYO_MAC_FOR_FILE
        CreateEntry("mapping",          0400, info_dir, CCS_INFO_MAPPING);
#endif
#endif
        CreateEntry("meminfo",          0400, info_dir, CCS_INFO_MEMINFO);
        CreateEntry("status",           0600, ccs_dir, CCS_STATUS);
        CreateEntry("manager",          0600, policy_dir, CCS_POLICY_MANAGER);
        CreateEntry(".updates_counter", 0400, info_dir, CCS_INFO_UPDATESCOUNTER);
}

#else
void __init CCSProc_Init(void) {}
#endif

EXPORT_SYMBOL(CCSProc_Init);