ccs-patch/patches/ccs-patch-2.6.18-asianux-3.diff

This is TOMOYO Linux patch for Asianux 3.0.

Source code for this patch is http://ftp.miraclelinux.com/pub/Asianux/Server/3.0/updates/src/kernel-2.6.18-194.6.AXS3.src.rpm
---
 arch/alpha/kernel/ptrace.c      |    3 +++
 arch/ia64/ia32/sys_ia32.c       |    3 +++
 arch/m32r/kernel/ptrace.c       |    3 +++
 arch/mips/kernel/ptrace32.c     |    3 +++
 arch/sparc/kernel/ptrace.c      |    5 +++++
 fs/compat.c                     |    9 ++++++++-
 fs/exec.c                       |   12 +++++++++++-
 fs/fcntl.c                      |    5 +++++
 fs/ioctl.c                      |    3 +++
 fs/namei.c                      |   31 +++++++++++++++++++++++++++++++
 fs/namespace.c                  |    9 +++++++++
 fs/open.c                       |   27 +++++++++++++++++++++++++++
 fs/proc/proc_misc.c             |    1 +
 include/linux/init_task.h       |    9 +++++++++
 include/linux/sched.h           |    6 ++++++
 kernel/compat.c                 |    3 +++
 kernel/kexec.c                  |    3 +++
 kernel/kmod.c                   |    5 +++++
 kernel/module.c                 |    7 +++++--
 kernel/ptrace.c                 |    5 +++++
 kernel/sched.c                  |    3 +++
 kernel/signal.c                 |    9 +++++++++
 kernel/sys.c                    |   11 +++++++++++
 kernel/sysctl.c                 |   11 +++++++++++
 kernel/time.c                   |    7 +++++++
 net/ipv4/inet_connection_sock.c |    3 +++
 net/ipv4/inet_hashtables.c      |    3 +++
 net/ipv4/raw.c                  |   12 +++++++++---
 net/ipv4/udp.c                  |   14 +++++++++++++-
 net/ipv6/inet6_hashtables.c     |    3 +++
 net/ipv6/raw.c                  |   12 +++++++++---
 net/ipv6/udp.c                  |   21 +++++++++++++++++----
 net/socket.c                    |   23 ++++++++++++++++++++++-
 net/unix/af_unix.c              |    9 +++++++++
 security/Kconfig                |    2 ++
 security/Makefile               |    3 +++
 36 files changed, 282 insertions(+), 16 deletions(-)

--- linux-2.6.18-194.6AXS3.orig/arch/alpha/kernel/ptrace.c
+++ linux-2.6.18-194.6AXS3/arch/alpha/kernel/ptrace.c
@@ -20,6 +20,7 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/fpu.h>
+#include <linux/ccsecurity.h>
 
 #include "proto.h"
 
@@ -268,6 +269,8 @@ do_sys_ptrace(long request, long pid, lo
        unsigned long tmp;
        size_t copied;
        long ret;
+       if (ccs_ptrace_permission(request, pid))
+               return -EPERM;
 
        lock_kernel();
        DBG(DBG_MEM, ("request=%ld pid=%ld addr=0x%lx data=0x%lx\n",
--- linux-2.6.18-194.6AXS3.orig/arch/ia64/ia32/sys_ia32.c
+++ linux-2.6.18-194.6AXS3/arch/ia64/ia32/sys_ia32.c
@@ -58,6 +58,7 @@
 #include <asm/types.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
+#include <linux/ccsecurity.h>
 
 #include "ia32priv.h"
 
@@ -1738,6 +1739,8 @@ sys32_ptrace (int request, pid_t pid, un
        struct task_struct *child;
        unsigned int value, tmp;
        long i, ret;
+       if (ccs_ptrace_permission(request, pid))
+               return -EPERM;
 
        lock_kernel();
        if (request == PTRACE_TRACEME) {
--- linux-2.6.18-194.6AXS3.orig/arch/m32r/kernel/ptrace.c
+++ linux-2.6.18-194.6AXS3/arch/m32r/kernel/ptrace.c
@@ -32,6 +32,7 @@
 #include <asm/system.h>
 #include <asm/processor.h>
 #include <asm/mmu_context.h>
+#include <linux/ccsecurity.h>
 
 /*
  * This routine will get a word off of the process kernel stack.
@@ -742,6 +743,8 @@ asmlinkage long sys_ptrace(long request,
 {
        struct task_struct *child;
        int ret;
+       if (ccs_ptrace_permission(request, pid))
+               return -EPERM;
 
        lock_kernel();
        if (request == PTRACE_TRACEME) {
--- linux-2.6.18-194.6AXS3.orig/arch/mips/kernel/ptrace32.c
+++ linux-2.6.18-194.6AXS3/arch/mips/kernel/ptrace32.c
@@ -35,6 +35,7 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/bootinfo.h>
+#include <linux/ccsecurity.h>
 
 int ptrace_getregs (struct task_struct *child, __s64 __user *data);
 int ptrace_setregs (struct task_struct *child, __s64 __user *data);
@@ -50,6 +51,8 @@ asmlinkage int sys32_ptrace(int request,
 {
        struct task_struct *child;
        int ret;
+       if (ccs_ptrace_permission(request, pid))
+               return -EPERM;
 
 #if 0
        printk("ptrace(r=%d,pid=%d,addr=%08lx,data=%08lx)\n",
--- linux-2.6.18-194.6AXS3.orig/arch/sparc/kernel/ptrace.c
+++ linux-2.6.18-194.6AXS3/arch/sparc/kernel/ptrace.c
@@ -23,6 +23,7 @@
 #include <asm/pgtable.h>
 #include <asm/system.h>
 #include <asm/uaccess.h>
+#include <linux/ccsecurity.h>
 
 #define MAGIC_CONSTANT 0x80000000
 
@@ -267,6 +268,10 @@ asmlinkage void do_ptrace(struct pt_regs
        unsigned long addr2 = regs->u_regs[UREG_I4];
        struct task_struct *child;
        int ret;
+       if (ccs_ptrace_permission(request, pid)) {
+               pt_error_return(regs, EPERM);
+               return;
+       }
 
        lock_kernel();
 #ifdef DEBUG_PTRACE
--- linux-2.6.18-194.6AXS3.orig/fs/compat.c
+++ linux-2.6.18-194.6AXS3/fs/compat.c
@@ -52,6 +52,7 @@
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
 #include <asm/ioctls.h>
+#include <linux/ccsecurity.h>
 
 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat);
 
@@ -397,6 +398,8 @@ asmlinkage long compat_sys_ioctl(unsigne
 
        /* RED-PEN how should LSM module know it's handling 32bit? */
        error = security_file_ioctl(filp, cmd, arg);
+       if (!error)
+               error = ccs_ioctl_permission(filp, cmd, arg);
        if (error)
                goto out_fput;
 
@@ -421,6 +424,10 @@ asmlinkage long compat_sys_ioctl(unsigne
                /*FALL THROUGH*/
 
        default:
+               if (!ccs_capable(CCS_SYS_IOCTL)) {
+                       error = -EPERM;
+                       goto out_fput;
+               }
                if (filp->f_op && filp->f_op->compat_ioctl) {
                        error = filp->f_op->compat_ioctl(filp, cmd, arg);
                        if (error != -ENOIOCTLCMD)
@@ -1590,7 +1597,7 @@ int compat_do_execve(char * filename,
        if (retval < 0)
                goto out;
 
-       retval = search_binary_handler(bprm, regs);
+       retval = ccs_search_binary_handler(bprm, regs);
        if (retval >= 0) {
                /* execve success */
                security_bprm_free(bprm);
--- linux-2.6.18-194.6AXS3.orig/fs/exec.c
+++ linux-2.6.18-194.6AXS3/fs/exec.c
@@ -60,6 +60,8 @@
 #include <linux/kmod.h>
 #endif
 
+#include <linux/ccsecurity.h>
+
 int core_uses_pid;
 char core_pattern[128] = "core";
 int suid_dumpable = 0;
@@ -142,6 +144,10 @@ asmlinkage long sys_uselib(const char __
        if (error)
                goto exit;
 
+       error = ccs_uselib_permission(nd.dentry, nd.mnt);
+       if (error)
+               goto exit;
+
        file = nameidata_to_filp(&nd, O_RDONLY);
        error = PTR_ERR(file);
        if (IS_ERR(file))
@@ -680,6 +686,9 @@ struct file *open_exec(const char *name)
                if (!(nd.mnt->mnt_flags & MNT_NOEXEC) &&
                    S_ISREG(inode->i_mode)) {
                        int err = vfs_permission(&nd, MAY_EXEC);
+                       if (!err)
+                               err = ccs_open_exec_permission(nd.dentry,
+                                                                    nd.mnt);
                        file = ERR_PTR(err);
                        if (!err) {
                                file = nameidata_to_filp(&nd, force_o_largefile() ?
@@ -1403,7 +1412,8 @@ int do_execve(char * filename,
                goto out;
        bprm->argv_len = env_p - bprm->p;
 
-       retval = search_binary_handler(bprm,regs);
+       retval = ccs_search_binary_handler(bprm, regs);
+
        if (retval >= 0) {
                /* execve success */
                free_arg_pages(bprm);
--- linux-2.6.18-194.6AXS3.orig/fs/fcntl.c
+++ linux-2.6.18-194.6AXS3/fs/fcntl.c
@@ -22,6 +22,7 @@
 #include <asm/poll.h>
 #include <asm/siginfo.h>
 #include <asm/uaccess.h>
+#include <linux/ccsecurity.h>
 
 void fastcall set_close_on_exec(unsigned int fd, int flag)
 {
@@ -363,6 +364,8 @@ asmlinkage long sys_fcntl(unsigned int f
                goto out;
 
        err = security_file_fcntl(filp, cmd, arg);
+       if (!err)
+               err = ccs_fcntl_permission(filp, cmd, arg);
        if (err) {
                fput(filp);
                return err;
@@ -387,6 +390,8 @@ asmlinkage long sys_fcntl64(unsigned int
                goto out;
 
        err = security_file_fcntl(filp, cmd, arg);
+       if (!err)
+               err = ccs_fcntl_permission(filp, cmd, arg);
        if (err) {
                fput(filp);
                return err;
--- linux-2.6.18-194.6AXS3.orig/fs/ioctl.c
+++ linux-2.6.18-194.6AXS3/fs/ioctl.c
@@ -17,6 +17,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/ioctls.h>
+#include <linux/ccsecurity.h>
 
 /* So that the fiemap access checks can't overflow on 32 bit machines. */
 #define FIEMAP_MAX_EXTENTS     (UINT_MAX / sizeof(struct fiemap_extent))
@@ -514,6 +515,8 @@ asmlinkage long sys_ioctl(unsigned int f
                goto out;
 
        error = security_file_ioctl(filp, cmd, arg);
+       if (!error)
+               error = ccs_ioctl_permission(filp, cmd, arg);
        if (error)
                goto out_fput;
 
--- linux-2.6.18-194.6AXS3.orig/fs/namei.c
+++ linux-2.6.18-194.6AXS3/fs/namei.c
@@ -37,6 +37,8 @@
 
 #define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE])
 
+#include <linux/ccsecurity.h>
+
 /* [Feb-1997 T. Schoebel-Theuer]
  * Fundamental changes in the pathname lookup mechanisms (namei)
  * were necessary because of omirr.  The reason is that omirr needs
@@ -1589,6 +1591,11 @@ int may_open(struct nameidata *nd, int a
                if (current->fsuid != inode->i_uid && !capable(CAP_FOWNER))
                        return -EPERM;
 
+       /* includes O_APPEND and O_TRUNC checks */
+       error = ccs_open_permission(dentry, nd->mnt, flag);
+       if (error)
+               return error;
+
        /*
         * Ensure there are no outstanding leases on the file.
         */
@@ -1703,6 +1710,9 @@ do_last:
        if (!path.dentry->d_inode) {
                if (!IS_POSIXACL(dir->d_inode))
                        mode &= ~current->fs->umask;
+               error = ccs_mknod_permission(dir->d_inode, path.dentry,
+                                            nd->mnt, mode, 0);
+               if (!error)
                error = vfs_create(dir->d_inode, path.dentry, mode, nd);
                mutex_unlock(&dir->d_inode->i_mutex);
                dput(nd->dentry);
@@ -1901,6 +1911,9 @@ asmlinkage long sys_mknodat(int dfd, con
        if (!IS_POSIXACL(nd.dentry->d_inode))
                mode &= ~current->fs->umask;
        if (!IS_ERR(dentry)) {
+               error = ccs_mknod_permission(nd.dentry->d_inode, dentry,
+                                            nd.mnt, mode, dev);
+               if (!error)
                switch (mode & S_IFMT) {
                case 0: case S_IFREG:
                        error = vfs_create(nd.dentry->d_inode,dentry,mode,&nd);
@@ -1974,6 +1987,9 @@ asmlinkage long sys_mkdirat(int dfd, con
                if (!IS_ERR(dentry)) {
                        if (!IS_POSIXACL(nd.dentry->d_inode))
                                mode &= ~current->fs->umask;
+                       error = ccs_mkdir_permission(nd.dentry->d_inode,
+                                                    dentry, nd.mnt, mode);
+                       if (!error)
                        error = vfs_mkdir(nd.dentry->d_inode, dentry, mode);
                        dput(dentry);
                }
@@ -2082,6 +2098,9 @@ static long do_rmdir(int dfd, const char
        dentry = lookup_hash(&nd);
        error = PTR_ERR(dentry);
        if (!IS_ERR(dentry)) {
+               error = ccs_rmdir_permission(nd.dentry->d_inode, dentry,
+                                            nd.mnt);
+               if (!error)
                error = vfs_rmdir(nd.dentry->d_inode, dentry);
                dput(dentry);
        }
@@ -2163,6 +2182,9 @@ static long do_unlinkat(int dfd, const c
                inode = dentry->d_inode;
                if (inode)
                        atomic_inc(&inode->i_count);
+               error = ccs_unlink_permission(nd.dentry->d_inode, dentry,
+                                             nd.mnt);
+               if (!error)
                error = vfs_unlink(nd.dentry->d_inode, dentry);
        exit2:
                dput(dentry);
@@ -2241,6 +2263,9 @@ asmlinkage long sys_symlinkat(const char
                dentry = lookup_create(&nd, 0);
                error = PTR_ERR(dentry);
                if (!IS_ERR(dentry)) {
+                       error = ccs_symlink_permission(nd.dentry->d_inode,
+                                                      dentry, nd.mnt, from);
+                       if (!error)
                        error = vfs_symlink(nd.dentry->d_inode, dentry, from, S_IALLUGO);
                        dput(dentry);
                }
@@ -2335,6 +2360,9 @@ asmlinkage long sys_linkat(int olddfd, c
        new_dentry = lookup_create(&nd, 0);
        error = PTR_ERR(new_dentry);
        if (!IS_ERR(new_dentry)) {
+               error = ccs_link_permission(old_nd.dentry, nd.dentry->d_inode,
+                                           new_dentry, nd.mnt);
+               if (!error)
                error = vfs_link(old_nd.dentry, nd.dentry->d_inode, new_dentry);
                dput(new_dentry);
        }
@@ -2561,6 +2589,9 @@ static int do_rename(int olddfd, const c
        if (new_dentry == trap)
                goto exit5;
 
+       error = ccs_rename_permission(old_dir->d_inode, old_dentry,
+                                     new_dir->d_inode, new_dentry, newnd.mnt);
+       if (!error)
        error = vfs_rename(old_dir->d_inode, old_dentry,
                                   new_dir->d_inode, new_dentry);
 exit5:
--- linux-2.6.18-194.6AXS3.orig/fs/namespace.c
+++ linux-2.6.18-194.6AXS3/fs/namespace.c
@@ -25,6 +25,7 @@
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 #include "pnode.h"
+#include <linux/ccsecurity.h>
 
 extern int __init init_rootfs(void);
 
@@ -557,6 +558,8 @@ static int do_umount(struct vfsmount *mn
                flags |= MNT_DETACH | MNT_FORCE;
 #endif
        retval = security_sb_umount(mnt, flags);
+       if (!retval)
+               retval = ccs_umount_permission(mnt, flags);
        if (retval)
                return retval;
 
@@ -1422,6 +1425,7 @@ int copy_mount_options(const void __user
 long do_mount(char *dev_name, char *dir_name, char *type_page,
                  unsigned long flags, void *data_page)
 {
+       const unsigned long original_flags = flags;
        struct nameidata nd;
        int retval = 0;
        int mnt_flags = 0;
@@ -1461,6 +1465,9 @@ long do_mount(char *dev_name, char *dir_
                return retval;
 
        retval = security_sb_mount(dev_name, &nd, type_page, flags, data_page);
+       if (!retval)
+               retval = ccs_mount_permission(dev_name, &nd, type_page,
+                                             original_flags, data_page);
        if (retval)
                goto dput_out;
 
@@ -1747,6 +1754,8 @@ asmlinkage long sys_pivot_root(const cha
                goto out1;
 
        error = security_sb_pivotroot(&old_nd, &new_nd);
+       if (!error)
+               error = ccs_pivot_root_permission(&old_nd, &new_nd);
        if (error) {
                path_release(&old_nd);
                goto out1;
--- linux-2.6.18-194.6AXS3.orig/fs/open.c
+++ linux-2.6.18-194.6AXS3/fs/open.c
@@ -31,6 +31,7 @@
 #include <linux/falloc.h>
 
 #include <asm/unistd.h>
+#include <linux/ccsecurity.h>
 
 int vfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
@@ -273,6 +274,8 @@ static long do_sys_truncate(const char _
        if (error)
                goto dput_and_out;
 
+       error = ccs_truncate_permission(nd.dentry, nd.mnt);
+       if (!error)
        error = locks_verify_truncate(inode, NULL, length);
        if (!error) {
                DQUOT_INIT(inode);
@@ -326,6 +329,9 @@ static long do_sys_ftruncate(unsigned in
        if (IS_APPEND(inode))
                goto out_putf;
 
+       error = ccs_truncate_permission(dentry, file->f_vfsmnt);
+       if (error)
+               goto out_putf;
        error = locks_verify_truncate(inode, file, length);
        if (!error)
                error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, file);
@@ -685,6 +691,8 @@ asmlinkage long sys_chroot(const char __
        error = -EPERM;
        if (!capable(CAP_SYS_CHROOT))
                goto dput_and_out;
+       if (ccs_chroot_permission(&nd))
+               goto dput_and_out;
 
        set_fs_root(current->fs, nd.mnt, nd.dentry);
        set_fs_altroot();
@@ -720,6 +728,9 @@ asmlinkage long sys_fchmod(unsigned int 
        err = -EPERM;
        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
                goto out_putf;
+       err = ccs_chmod_permission(dentry, file->f_vfsmnt, mode);
+       if (err)
+               goto out_putf;
        mutex_lock(&inode->i_mutex);
        if (mode == (mode_t) -1)
                mode = inode->i_mode;
@@ -754,6 +765,9 @@ asmlinkage long sys_fchmodat(int dfd, co
        error = -EPERM;
        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
                goto dput_and_out;
+       error = ccs_chmod_permission(nd.dentry, nd.mnt, mode);
+       if (error)
+               goto dput_and_out;
 
        mutex_lock(&inode->i_mutex);
        if (mode == (mode_t) -1)
@@ -816,6 +830,8 @@ asmlinkage long sys_chown(const char __u
 
        error = user_path_walk(filename, &nd);
        if (!error) {
+               error = ccs_chown_permission(nd.dentry, nd.mnt, user, group);
+               if (!error)
                error = chown_common(nd.dentry, user, group);
                path_release(&nd);
        }
@@ -835,6 +851,8 @@ asmlinkage long sys_fchownat(int dfd, co
        follow = (flag & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW;
        error = __user_walk_fd(dfd, filename, follow, &nd);
        if (!error) {
+               error = ccs_chown_permission(nd.dentry, nd.mnt, user, group);
+               if (!error)
                error = chown_common(nd.dentry, user, group);
                path_release(&nd);
        }
@@ -849,6 +867,8 @@ asmlinkage long sys_lchown(const char __
 
        error = user_path_walk_link(filename, &nd);
        if (!error) {
+               error = ccs_chown_permission(nd.dentry, nd.mnt, user, group);
+               if (!error)
                error = chown_common(nd.dentry, user, group);
                path_release(&nd);
        }
@@ -866,6 +886,9 @@ asmlinkage long sys_fchown(unsigned int 
                struct dentry * dentry;
                dentry = file->f_dentry;
                audit_inode(NULL, dentry);
+               error = ccs_chown_permission(dentry, file->f_vfsmnt, user,
+                                            group);
+               if (!error)
                error = chown_common(dentry, user, group);
                fput(file);
        }
@@ -958,7 +981,9 @@ static struct file *do_filp_open(int dfd
        if ((namei_flags+1) & O_ACCMODE)
                namei_flags++;
 
+       ccs_save_open_mode(flags);
        error = open_namei(dfd, filename, namei_flags, mode, &nd);
+       ccs_clear_open_mode();
        if (!error)
                return nameidata_to_filp(&nd, flags);
 
@@ -1287,6 +1312,8 @@ EXPORT_SYMBOL(sys_close);
  */
 asmlinkage long sys_vhangup(void)
 {
+       if (!ccs_capable(CCS_SYS_VHANGUP))
+               return -EPERM;
        if (capable(CAP_SYS_TTY_CONFIG)) {
                tty_vhangup(current->signal->tty);
                return 0;
--- linux-2.6.18-194.6AXS3.orig/fs/proc/proc_misc.c
+++ linux-2.6.18-194.6AXS3/fs/proc/proc_misc.c
@@ -738,4 +738,5 @@ void __init proc_misc_init(void)
        if (entry)
                entry->proc_fops = &proc_sysrq_trigger_operations;
 #endif
+       printk(KERN_INFO "Hook version: 2.6.18-194.6AXS3 2010/09/29\n");
 }
--- linux-2.6.18-194.6AXS3.orig/include/linux/init_task.h
+++ linux-2.6.18-194.6AXS3/include/linux/init_task.h
@@ -76,6 +76,14 @@
 
 extern struct group_info init_groups;
 
+#ifdef CONFIG_CCSECURITY
+#define INIT_CCSECURITY          \
+       .ccs_domain_info = NULL, \
+       .ccs_flags = 0,
+#else
+#define INIT_CCSECURITY
+#endif
+
 /*
  *  INIT_TASK is used to set up the first task table, touch at
  * your own risk!. Base=0, limit=0x1fffff (=2MB)
@@ -125,6 +133,7 @@ extern struct group_info init_groups;
        .pi_lock        = SPIN_LOCK_UNLOCKED,                           \
        INIT_TRACE_IRQFLAGS                                             \
        INIT_LOCKDEP                                                    \
+       INIT_CCSECURITY                                                 \
 }
 
 
--- linux-2.6.18-194.6AXS3.orig/include/linux/sched.h
+++ linux-2.6.18-194.6AXS3/include/linux/sched.h
@@ -35,6 +35,8 @@
 
 #ifdef __KERNEL__
 
+struct ccs_domain_info;
+
 struct sched_param {
        int sched_priority;
 };
@@ -1114,6 +1116,10 @@ struct task_struct {
 #ifdef CONFIG_TASK_DELAY_ACCT
        struct task_delay_info *delays;
 #endif
+#ifdef CONFIG_CCSECURITY
+       struct ccs_domain_info *ccs_domain_info;
+       u32 ccs_flags;
+#endif
 };
 
 static inline pid_t process_group(struct task_struct *tsk)
--- linux-2.6.18-194.6AXS3.orig/kernel/compat.c
+++ linux-2.6.18-194.6AXS3/kernel/compat.c
@@ -25,6 +25,7 @@
 
 #include <asm/uaccess.h>
 #include <linux/module.h>
+#include <linux/ccsecurity.h>
 
 int get_compat_timespec(struct timespec *ts, const struct compat_timespec __user *cts)
 {
@@ -837,6 +838,8 @@ asmlinkage long compat_sys_stime(compat_
        err = security_settime(&tv, NULL);
        if (err)
                return err;
+       if (!ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
 
        do_settimeofday(&tv);
        return 0;
--- linux-2.6.18-194.6AXS3.orig/kernel/kexec.c
+++ linux-2.6.18-194.6AXS3/kernel/kexec.c
@@ -32,6 +32,7 @@
 #include <asm/system.h>
 #include <asm/semaphore.h>
 #include <asm/sections.h>
+#include <linux/ccsecurity.h>
 
 #if defined(__i386__) || defined(__x86_64__)
 #include <asm/virtext.h>
@@ -981,6 +982,8 @@ asmlinkage long sys_kexec_load(unsigned 
        /* We only trust the superuser with rebooting the system. */
        if (!capable(CAP_SYS_BOOT))
                return -EPERM;
+       if (!ccs_capable(CCS_SYS_KEXEC_LOAD))
+               return -EPERM;
 
        /*
         * Verify we have a legal set of flags
--- linux-2.6.18-194.6AXS3.orig/kernel/kmod.c
+++ linux-2.6.18-194.6AXS3/kernel/kmod.c
@@ -147,6 +147,11 @@ __exec_usermodehelper(char *path, char *
 
        key_put(old_session);
 
+#ifdef CONFIG_CCSECURITY
+       current->ccs_domain_info = NULL;
+       current->ccs_flags = 0;
+#endif
+
        retval = -EPERM;
        if (current->fs->root)
                retval = execve(path, argv, envp);
--- linux-2.6.18-194.6AXS3.orig/kernel/module.c
+++ linux-2.6.18-194.6AXS3/kernel/module.c
@@ -46,6 +46,7 @@
 #include <linux/license.h>
 #include <linux/tracepoint.h>
 #include "module-verify.h"
+#include <linux/ccsecurity.h>
 
 #if 0
 #define DEBUGP printk
@@ -784,7 +785,8 @@ sys_delete_module(const char __user *nam
 
        if (!capable(CAP_SYS_MODULE))
                return -EPERM;
-
+       if (!ccs_capable(CCS_USE_KERNEL_MODULE))
+               return -EPERM;
        if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0)
                return -EFAULT;
        name[MODULE_NAME_LEN-1] = '\0';
@@ -2099,7 +2101,8 @@ sys_init_module(void __user *umod,
        /* Must have permission */
        if (!capable(CAP_SYS_MODULE))
                return -EPERM;
-
+       if (!ccs_capable(CCS_USE_KERNEL_MODULE))
+               return -EPERM;
        /* Only one module load at a time, please */
        if (mutex_lock_interruptible(&module_mutex) != 0)
                return -EINTR;
--- linux-2.6.18-194.6AXS3.orig/kernel/ptrace.c
+++ linux-2.6.18-194.6AXS3/kernel/ptrace.c
@@ -26,6 +26,7 @@
 #include <asm/tracehook.h>
 #include <asm/pgtable.h>
 #include <asm/uaccess.h>
+#include <linux/ccsecurity.h>
 
 
 /*
@@ -1108,6 +1109,8 @@ asmlinkage long sys_ptrace(long request,
        struct utrace_attached_engine *engine = NULL;
        struct ptrace_state *state = NULL;
        long ret, val;
+       if (ccs_ptrace_permission(request, pid))
+               return -EPERM;
 
        pr_debug("%d sys_ptrace(%ld, %ld, %lx, %lx)\n",
                 current->pid, request, pid, addr, data);
@@ -1196,6 +1199,8 @@ asmlinkage long compat_sys_ptrace(compat
        struct utrace_attached_engine *engine;
        struct ptrace_state *state;
        compat_long_t ret, val;
+       if (ccs_ptrace_permission(request, pid))
+               return -EPERM;
 
        pr_debug("%d compat_sys_ptrace(%d, %d, %x, %x)\n",
                 current->pid, request, pid, addr, cdata);
--- linux-2.6.18-194.6AXS3.orig/kernel/sched.c
+++ linux-2.6.18-194.6AXS3/kernel/sched.c
@@ -57,6 +57,7 @@
 #include <trace/sched.h>
 
 #include <asm/unistd.h>
+#include <linux/ccsecurity.h>
 
 /*
  * Convert user-nice values [ -20 ... 0 ... 19 ]
@@ -4249,6 +4250,8 @@ int can_nice(const struct task_struct *p
 asmlinkage long sys_nice(int increment)
 {
        long nice, retval;
+       if (!ccs_capable(CCS_SYS_NICE))
+               return -EPERM;
 
        /*
         * Setpriority might change our priority at the same moment.
--- linux-2.6.18-194.6AXS3.orig/kernel/signal.c
+++ linux-2.6.18-194.6AXS3/kernel/signal.c
@@ -29,6 +29,7 @@
 #include <asm/siginfo.h>
 #include "audit.h"     /* audit_signal_info() */
 #include <trace/signal.h>
+#include <linux/ccsecurity.h>
 
 /*
  * SLAB caches for signal bits.
@@ -2023,6 +2024,8 @@ asmlinkage long
 sys_kill(int pid, int sig)
 {
        struct siginfo info;
+       if (ccs_kill_permission(pid, sig))
+               return -EPERM;
 
        info.si_signo = sig;
        info.si_errno = 0;
@@ -2092,6 +2095,8 @@ asmlinkage long sys_tgkill(int tgid, int
        /* This is only valid for single tasks */
        if (pid <= 0 || tgid <= 0)
                return -EINVAL;
+       if (ccs_tgkill_permission(tgid, pid, sig))
+               return -EPERM;
 
        return do_tkill(tgid, pid, sig);
 }
@@ -2105,6 +2110,8 @@ sys_tkill(int pid, int sig)
        /* This is only valid for single tasks */
        if (pid <= 0)
                return -EINVAL;
+       if (ccs_tkill_permission(pid, sig))
+               return -EPERM;
 
        return do_tkill(0, pid, sig);
 }
@@ -2122,6 +2129,8 @@ sys_rt_sigqueueinfo(int pid, int sig, si
        if (info.si_code >= 0)
                return -EPERM;
        info.si_signo = sig;
+       if (ccs_sigqueue_permission(pid, sig))
+               return -EPERM;
 
        /* POSIX.1b doesn't mention process groups.  */
        return kill_proc_info(sig, &info, pid);
--- linux-2.6.18-194.6AXS3.orig/kernel/sys.c
+++ linux-2.6.18-194.6AXS3/kernel/sys.c
@@ -37,6 +37,7 @@
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/unistd.h>
+#include <linux/ccsecurity.h>
 
 #ifndef SET_UNALIGN_CTL
 # define SET_UNALIGN_CTL(a,b)  (-EINVAL)
@@ -468,6 +469,10 @@ asmlinkage long sys_setpriority(int whic
 
        if (which > 2 || which < 0)
                goto out;
+       if (!ccs_capable(CCS_SYS_NICE)) {
+               error = -EPERM;
+               goto out;
+       }
 
        /* normalize: avoid signed division (rounding problems) */
        error = -ESRCH;
@@ -694,6 +699,8 @@ asmlinkage long sys_reboot(int magic1, i
                        magic2 != LINUX_REBOOT_MAGIC2B &&
                        magic2 != LINUX_REBOOT_MAGIC2C))
                return -EINVAL;
+       if (!ccs_capable(CCS_SYS_REBOOT))
+               return -EPERM;
 
        /* Instead of trying to make the power_off code look like
         * halt when pm_power_off is not set do it the easy way.
@@ -1691,6 +1698,8 @@ asmlinkage long sys_sethostname(char __u
                return -EPERM;
        if (len < 0 || len > __NEW_UTS_LEN)
                return -EINVAL;
+       if (!ccs_capable(CCS_SYS_SETHOSTNAME))
+               return -EPERM;
        down_write(&uts_sem);
        errno = -EFAULT;
        if (!copy_from_user(tmp, name, len)) {
@@ -1736,6 +1745,8 @@ asmlinkage long sys_setdomainname(char _
                return -EPERM;
        if (len < 0 || len > __NEW_UTS_LEN)
                return -EINVAL;
+       if (!ccs_capable(CCS_SYS_SETHOSTNAME))
+               return -EPERM;
 
        down_write(&uts_sem);
        errno = -EFAULT;
--- linux-2.6.18-194.6AXS3.orig/kernel/sysctl.c
+++ linux-2.6.18-194.6AXS3/kernel/sysctl.c
@@ -48,6 +48,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
+#include <linux/ccsecurity.h>
 
 extern int proc_nr_files(ctl_table *table, int write, struct file *filp,
                      void __user *buffer, size_t *lenp, loff_t *ppos);
@@ -1442,6 +1443,9 @@ int do_sysctl(int __user *name, int nlen
 
                spin_unlock(&sysctl_lock);
 
+               error = ccs_parse_table(name, nlen, oldval, newval,
+                                       head->ctl_table);
+               if (!error)
                error = parse_table(name, nlen, oldval, oldlenp, 
                                        newval, newlen, head->ctl_table,
                                        &context);
@@ -1514,6 +1518,13 @@ repeat:
                                if (ctl_perm(table, 001))
                                        return -EPERM;
                                if (table->strategy) {
+                                       int op = 0;
+                                       if (oldval)
+                                               op |= 004;
+                                       if (newval)
+                                               op |= 002;
+                                       if (ctl_perm(table, op))
+                                               return -EPERM;
                                        error = table->strategy(
                                                table, name, nlen,
                                                oldval, oldlenp,
--- linux-2.6.18-194.6AXS3.orig/kernel/time.c
+++ linux-2.6.18-194.6AXS3/kernel/time.c
@@ -39,6 +39,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
+#include <linux/ccsecurity.h>
 
 /* 
  * The timezone where the local system is located.  Used as a default by some
@@ -91,6 +92,8 @@ asmlinkage long sys_stime(time_t __user 
        err = security_settime(&tv, NULL);
        if (err)
                return err;
+       if (!ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
 
        do_settimeofday(&tv);
        return 0;
@@ -161,6 +164,8 @@ int do_sys_settimeofday(struct timespec 
        error = security_settime(tv, tz);
        if (error)
                return error;
+       if (!ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
 
        if (tz) {
                /* SMP safe, global irq locking makes it work. */
@@ -221,6 +226,8 @@ int do_adjtimex(struct timex *txc)
        /* In order to modify anything, you gotta be super-user! */
        if (txc->modes && !capable(CAP_SYS_TIME))
                return -EPERM;
+       if (txc->modes && !ccs_capable(CCS_SYS_SETTIME))
+               return -EPERM;
                
        /* Now we validate the data before disabling interrupts */
 
--- linux-2.6.18-194.6AXS3.orig/net/ipv4/inet_connection_sock.c
+++ linux-2.6.18-194.6AXS3/net/ipv4/inet_connection_sock.c
@@ -23,6 +23,7 @@
 #include <net/route.h>
 #include <net/tcp_states.h>
 #include <net/xfrm.h>
+#include <linux/ccsecurity.h>
 
 #ifdef INET_CSK_DEBUG
 const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n";
@@ -101,6 +102,8 @@ int inet_csk_get_port(struct inet_hashin
                do {
                        head = &hashinfo->bhash[inet_bhashfn(rover, hashinfo->bhash_size)];
                        spin_lock(&head->lock);
+                       if (ccs_lport_reserved(rover))
+                               goto next;
                        inet_bind_bucket_for_each(tb, node, &head->chain)
                                if (tb->port == rover)
                                        goto next;
--- linux-2.6.18-194.6AXS3.orig/net/ipv4/inet_hashtables.c
+++ linux-2.6.18-194.6AXS3/net/ipv4/inet_hashtables.c
@@ -22,6 +22,7 @@
 #include <net/inet_connection_sock.h>
 #include <net/inet_hashtables.h>
 #include <net/ip.h>
+#include <linux/ccsecurity.h>
 
 /*
  * Allocate and initialize a new local port bind bucket.
@@ -262,6 +263,8 @@ int inet_hash_connect(struct inet_timewa
                local_bh_disable();
                for (i = 1; i <= remaining; i++) {
                        port = low + (i + offset) % remaining;
+                       if (ccs_lport_reserved(port))
+                               continue;
                        head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
                        spin_lock(&head->lock);
 
--- linux-2.6.18-194.6AXS3.orig/net/ipv4/raw.c
+++ linux-2.6.18-194.6AXS3/net/ipv4/raw.c
@@ -78,6 +78,7 @@
 #include <linux/seq_file.h>
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv4.h>
+#include <linux/ccsecurity.h>
 
 struct hlist_head raw_v4_htable[RAWV4_HTABLE_SIZE];
 DEFINE_RWLOCK(raw_v4_lock);
@@ -605,9 +606,14 @@ static int raw_recvmsg(struct kiocb *ioc
                goto out;
        }
 
-       skb = skb_recv_datagram(sk, flags, noblock, &err);
-       if (!skb)
-               goto out;
+       for (;;) {
+               skb = skb_recv_datagram(sk, flags, noblock, &err);
+               if (!skb)
+                       goto out;
+               if (!ccs_socket_post_recvmsg_permission(sk, skb))
+                       break;
+               skb_kill_datagram(sk, skb, flags);
+       }
 
        copied = skb->len;
        if (len < copied) {
--- linux-2.6.18-194.6AXS3.orig/net/ipv4/udp.c
+++ linux-2.6.18-194.6AXS3/net/ipv4/udp.c
@@ -109,6 +109,7 @@
 #include <net/inet_common.h>
 #include <net/checksum.h>
 #include <net/xfrm.h>
+#include <linux/ccsecurity.h>
 
 /*
  *     Snmp MIB for the UDP layer
@@ -148,6 +149,7 @@ static int udp_v4_get_port(struct sock *
                best_size_so_far = UINT_MAX;
                best = rover = net_random() % remaining + low;
 
+               if (!ccs_lport_reserved(rover))
                if (!udp_lport_inuse(rover))
                        goto gotit;
 
@@ -155,6 +157,8 @@ static int udp_v4_get_port(struct sock *
                for (i = 0; i < UDP_HTABLE_SIZE; i++) {
                        struct hlist_head *list;
                        int size = 0;
+                       if (ccs_lport_reserved(rover))
+                               goto next;
 
                        list = &udp_hash[rover & (UDP_HTABLE_SIZE - 1)];
                        if (hlist_empty(list))
@@ -174,6 +178,7 @@ static int udp_v4_get_port(struct sock *
                /* 2nd pass: find hole in shortest hash chain */
                rover = best;
                for (i = 0; i < (1 << 16) / UDP_HTABLE_SIZE; i++) {
+                       if (!ccs_lport_reserved(rover))
                        if (!udp_lport_inuse(rover))
                                goto gotit;
                        rover += UDP_HTABLE_SIZE;
@@ -806,6 +811,7 @@ static int udp_recvmsg(struct kiocb *ioc
        struct sk_buff *skb;
        int copied, err;
        int peeked;
+       _Bool update_stat;
 
        /*
         *      Check any passed addresses
@@ -821,6 +827,11 @@ try_again:
                                  &peeked, &err);
        if (!skb)
                goto out;
+       if (ccs_socket_post_recvmsg_permission(sk, skb)) {
+               update_stat = 0;
+               goto csum_copy_err;
+       }
+       update_stat = 1;
   
        copied = skb->len - sizeof(struct udphdr);
        if (copied > len) {
@@ -874,7 +885,8 @@ out:
        return err;
 
 csum_copy_err:
-       UDP_INC_STATS_BH(UDP_MIB_INERRORS);
+       if (update_stat)
+               UDP_INC_STATS_BH(UDP_MIB_INERRORS);
 
        lock_sock(sk);
        skb_kill_datagram(sk, skb, flags);
--- linux-2.6.18-194.6AXS3.orig/net/ipv6/inet6_hashtables.c
+++ linux-2.6.18-194.6AXS3/net/ipv6/inet6_hashtables.c
@@ -21,6 +21,7 @@
 #include <net/inet_hashtables.h>
 #include <net/inet6_hashtables.h>
 #include <net/ip.h>
+#include <linux/ccsecurity.h>
 
 void __inet6_hash(struct inet_hashinfo *hashinfo,
                                struct sock *sk)
@@ -266,6 +267,8 @@ int inet6_hash_connect(struct inet_timew
                local_bh_disable();
                for (i = 1; i <= remaining; i++) {
                        port = low + (i + offset) % remaining;
+                       if (ccs_lport_reserved(port))
+                               continue;
                        head = &hinfo->bhash[inet_bhashfn(port, hinfo->bhash_size)];
                        spin_lock(&head->lock);
 
--- linux-2.6.18-194.6AXS3.orig/net/ipv6/raw.c
+++ linux-2.6.18-194.6AXS3/net/ipv6/raw.c
@@ -56,6 +56,7 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/ccsecurity.h>
 
 struct hlist_head raw_v6_htable[RAWV6_HTABLE_SIZE];
 DEFINE_RWLOCK(raw_v6_lock);
@@ -384,9 +385,14 @@ static int rawv6_recvmsg(struct kiocb *i
        if (flags & MSG_ERRQUEUE)
                return ipv6_recv_error(sk, msg, len);
 
-       skb = skb_recv_datagram(sk, flags, noblock, &err);
-       if (!skb)
-               goto out;
+       for (;;) {
+               skb = skb_recv_datagram(sk, flags, noblock, &err);
+               if (!skb)
+                       goto out;
+               if (!ccs_socket_post_recvmsg_permission(sk, skb))
+                       break;
+               skb_kill_datagram(sk, skb, flags);
+       }
 
        copied = skb->len;
        if (copied > len) {
--- linux-2.6.18-194.6AXS3.orig/net/ipv6/udp.c
+++ linux-2.6.18-194.6AXS3/net/ipv6/udp.c
@@ -58,6 +58,7 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/ccsecurity.h>
 
 DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly;
 
@@ -80,6 +81,7 @@ static int udp_v6_get_port(struct sock *
                best_size_so_far = UINT_MAX;
                best = rover = net_random() % remaining + low;
 
+               if (!ccs_lport_reserved(rover))
                if (!udp_lport_inuse(rover))
                        goto gotit;
 
@@ -87,6 +89,8 @@ static int udp_v6_get_port(struct sock *
                for (i = 0; i < UDP_HTABLE_SIZE; i++) {
                        int size = 0;
                        struct hlist_head *list;
+                       if (ccs_lport_reserved(rover))
+                               goto next;
 
                        list = &udp_hash[rover & (UDP_HTABLE_SIZE - 1)];
                        if (hlist_empty(list))
@@ -106,6 +110,7 @@ static int udp_v6_get_port(struct sock *
                /* 2nd pass: find hole in shortest hash chain */
                rover = best;
                for (i = 0; i < (1 << 16) / UDP_HTABLE_SIZE; i++) {
+                       if (!ccs_lport_reserved(rover))
                        if (!udp_lport_inuse(rover))
                                goto gotit;
                        rover += UDP_HTABLE_SIZE;
@@ -235,6 +240,7 @@ static int udpv6_recvmsg(struct kiocb *i
        int err;
        int peeked;
        int is_udp4;
+       _Bool update_stat;
 
        if (addr_len)
                *addr_len=sizeof(struct sockaddr_in6);
@@ -247,6 +253,11 @@ try_again:
                                  &peeked, &err);
        if (!skb)
                goto out;
+       if (ccs_socket_post_recvmsg_permission(sk, skb)) {
+               update_stat = 0;
+               goto csum_copy_err;
+       }
+       update_stat = 1;
 
        copied = skb->len - sizeof(struct udphdr);
        if (copied > len) {
@@ -326,10 +337,12 @@ csum_copy_err:
        release_sock(sk);
 
        if (flags & MSG_DONTWAIT) {
-               if (is_udp4)
-                       UDP_INC_STATS_USER(UDP_MIB_INERRORS);
-               else
-                       UDP6_INC_STATS_USER(UDP_MIB_INERRORS);
+               if (update_stat) {
+                       if (is_udp4)
+                               UDP_INC_STATS_USER(UDP_MIB_INERRORS);
+                       else
+                               UDP6_INC_STATS_USER(UDP_MIB_INERRORS);
+               }
                return -EAGAIN;
        }
        goto try_again;
--- linux-2.6.18-194.6AXS3.orig/net/socket.c
+++ linux-2.6.18-194.6AXS3/net/socket.c
@@ -96,6 +96,8 @@
 #include <net/sock.h>
 #include <linux/netfilter.h>
 
+#include <linux/ccsecurity.h>
+
 static int sock_no_open(struct inode *irrelevant, struct file *dontcare);
 static ssize_t sock_aio_read(struct kiocb *iocb, char __user *buf,
                         size_t size, loff_t pos);
@@ -594,6 +596,8 @@ static inline int __sock_sendmsg(struct 
        si->size = size;
 
        err = security_socket_sendmsg(sock, msg, size);
+       if (!err)
+               err = ccs_socket_sendmsg_permission(sock, msg, size);
        if (err)
                return err;
 
@@ -1167,6 +1171,8 @@ static int __sock_create(int family, int
        }
 
        err = security_socket_create(family, type, protocol, kern);
+       if (!err)
+               err = ccs_socket_create_permission(family, type, protocol);
        if (err)
                return err;
                
@@ -1398,6 +1404,11 @@ asmlinkage long sys_bind(int fd, struct 
                if((err=move_addr_to_kernel(umyaddr,addrlen,address))>=0) {
                        err = security_socket_bind(sock, (struct sockaddr *)address, addrlen);
                        if (!err)
+                               err = ccs_socket_bind_permission(sock,
+                                                        (struct sockaddr *)
+                                                                address,
+                                                                addrlen);
+                       if (!err)
                                err = sock->ops->bind(sock,
                                        (struct sockaddr *)address, addrlen);
                }
@@ -1426,6 +1437,8 @@ asmlinkage long sys_listen(int fd, int b
 
                err = security_socket_listen(sock, backlog);
                if (!err)
+                       err = ccs_socket_listen_permission(sock);
+               if (!err)
                        err = sock->ops->listen(sock, backlog);
 
                fput_light(sock->file, fput_needed);
@@ -1457,6 +1470,7 @@ asmlinkage long sys_accept(int fd, struc
        if (!sock)
                goto out;
 
+retry:
        err = -ENFILE;
        if (!(newsock = sock_alloc())) 
                goto out_put;
@@ -1489,6 +1503,11 @@ asmlinkage long sys_accept(int fd, struc
        if (err < 0)
                goto out_fd;
 
+       if (ccs_socket_post_accept_permission(sock, newsock)) {
+               fput(newfile);
+               put_unused_fd(newfd);
+               goto retry;
+       }
        if (upeer_sockaddr) {
                if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) {
                        err = -ECONNABORTED;
@@ -1543,9 +1562,11 @@ asmlinkage long sys_connect(int fd, stru
                goto out_put;
 
        err = security_socket_connect(sock, (struct sockaddr *)address, addrlen);
+       if (!err)
+               err = ccs_socket_connect_permission(sock, (struct sockaddr *)
+                                                   address, addrlen);
        if (err)
                goto out_put;
-
        err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen,
                                 sock->file->f_flags);
 out_put:
--- linux-2.6.18-194.6AXS3.orig/net/unix/af_unix.c
+++ linux-2.6.18-194.6AXS3/net/unix/af_unix.c
@@ -116,6 +116,7 @@
 #include <linux/mount.h>
 #include <net/checksum.h>
 #include <linux/security.h>
+#include <linux/ccsecurity.h>
 
 int sysctl_unix_max_dgram_qlen = 10;
 
@@ -808,6 +809,9 @@ static int unix_bind(struct socket *sock
                 */
                mode = S_IFSOCK |
                       (SOCK_INODE(sock)->i_mode & ~current->fs->umask);
+               err = ccs_mknod_permission(nd.dentry->d_inode, dentry, nd.mnt,
+                                          mode, 0);
+               if (!err)
                err = vfs_mknod(nd.dentry->d_inode, dentry, mode, 0);
                if (err)
                        goto out_mknod_dput;
@@ -1593,12 +1597,17 @@ static int unix_dgram_recvmsg(struct kio
 
        mutex_lock(&u->readlock);
 
+retry:
        skb = skb_recv_datagram(sk, flags, noblock, &err);
        if (!skb)
                goto out_unlock;
 
        wake_up_interruptible(&u->peer_wait);
 
+       if (ccs_socket_post_recvmsg_permission(sk, skb)) {
+               skb_kill_datagram(sk, skb, flags);
+               goto retry;
+       }
        if (msg->msg_name)
                unix_copy_addr(msg, skb->sk);
 
--- linux-2.6.18-194.6AXS3.orig/security/Kconfig
+++ linux-2.6.18-194.6AXS3/security/Kconfig
@@ -123,5 +123,7 @@ config LSM_MMAP_MIN_ADDR
 
 source security/selinux/Kconfig
 
+source security/ccsecurity/Kconfig
+
 endmenu
 
--- linux-2.6.18-194.6AXS3.orig/security/Makefile
+++ linux-2.6.18-194.6AXS3/security/Makefile
@@ -19,3 +19,6 @@ obj-$(CONFIG_SECURITY_SELINUX)                += selin
 obj-$(CONFIG_SECURITY_CAPABILITIES)    += commoncap.o capability.o
 obj-$(CONFIG_SECURITY_ROOTPLUG)                += commoncap.o root_plug.o
 obj-$(CONFIG_SECURITY_SECLVL)          += seclvl.o
+
+subdir-$(CONFIG_CCSECURITY)+= ccsecurity
+obj-$(CONFIG_CCSECURITY)+= ccsecurity/built-in.o