printk_ratelimit() functions should use CONFIG_PRINTK

[sfrench/cifs-2.6.git] / security / dummy.c

diff --git a/security/dummy.c b/security/dummy.c
index bc43d4c7383e89e5675e3ab1b031aa33fe7d7fc2..649326bf64ea37e82afe63901560f96c687a468b 100644 (file)
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -36,16 +36,19 @@ static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
 static int dummy_capget (struct task_struct *target, kernel_cap_t * effective,
                         kernel_cap_t * inheritable, kernel_cap_t * permitted)
 {
-       *effective = *inheritable = *permitted = 0;
-       if (!issecure(SECURE_NOROOT)) {
-               if (target->euid == 0) {
-                       *permitted |= (~0 & ~CAP_FS_MASK);
-                       *effective |= (~0 & ~CAP_TO_MASK(CAP_SETPCAP) & ~CAP_FS_MASK);
-               }
-               if (target->fsuid == 0) {
-                       *permitted |= CAP_FS_MASK;
-                       *effective |= CAP_FS_MASK;
-               }
+       if (target->euid == 0) {
+               cap_set_full(*permitted);
+               cap_set_init_eff(*effective);
+       } else {
+               cap_clear(*permitted);
+               cap_clear(*effective);
+       }
+
+       cap_clear(*inheritable);
+
+       if (target->fsuid != 0) {
+               *permitted = cap_drop_fs_set(*permitted);
+               *effective = cap_drop_fs_set(*effective);
        }
        return 0;
 }
@@ -227,22 +230,40 @@ static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
 }
 
 
-static void dummy_sb_post_mountroot (void)
+static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
 {
        return;
 }
 
-static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
+static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
+{
+       return 0;
+}
+
+static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
 {
        return;
 }
 
-static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
+static int dummy_sb_get_mnt_opts(const struct super_block *sb, char ***mount_options,
+                                int **flags, int *num_opts)
 {
+       *mount_options = NULL;
+       *flags = NULL;
+       *num_opts = 0;
        return 0;
 }
 
-static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
+static int dummy_sb_set_mnt_opts(struct super_block *sb, char **mount_options,
+                                int *flags, int num_opts)
+{
+       if (unlikely(num_opts))
+               return -EOPNOTSUPP;
+       return 0;
+}
+
+static void dummy_sb_clone_mnt_opts(const struct super_block *oldsb,
+                                   struct super_block *newsb)
 {
        return;
 }
@@ -386,7 +407,7 @@ static int dummy_inode_killpriv(struct dentry *dentry)
        return 0;
 }
 
-static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
+static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 {
        return -EOPNOTSUPP;
 }
@@ -428,7 +449,7 @@ static int dummy_file_mmap (struct file *file, unsigned long reqprot,
                            unsigned long addr,
                            unsigned long addr_only)
 {
-       if (addr < mmap_min_addr)
+       if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO))
                return -EACCES;
        return 0;
 }
@@ -930,6 +951,11 @@ static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
        return -EOPNOTSUPP;
 }
 
+static int dummy_secctx_to_secid(char *secdata, u32 seclen, u32 *secid)
+{
+       return -EOPNOTSUPP;
+}
+
 static void dummy_release_secctx(char *secdata, u32 seclen)
 {
 }
@@ -996,10 +1022,12 @@ void security_fixup_ops (struct security_operations *ops)
        set_to_dummy_if_null(ops, sb_umount_close);
        set_to_dummy_if_null(ops, sb_umount_busy);
        set_to_dummy_if_null(ops, sb_post_remount);
-       set_to_dummy_if_null(ops, sb_post_mountroot);
        set_to_dummy_if_null(ops, sb_post_addmount);
        set_to_dummy_if_null(ops, sb_pivotroot);
        set_to_dummy_if_null(ops, sb_post_pivotroot);
+       set_to_dummy_if_null(ops, sb_get_mnt_opts);
+       set_to_dummy_if_null(ops, sb_set_mnt_opts);
+       set_to_dummy_if_null(ops, sb_clone_mnt_opts);
        set_to_dummy_if_null(ops, inode_alloc_security);
        set_to_dummy_if_null(ops, inode_free_security);
        set_to_dummy_if_null(ops, inode_init_security);
@@ -1088,6 +1116,7 @@ void security_fixup_ops (struct security_operations *ops)
        set_to_dummy_if_null(ops, getprocattr);
        set_to_dummy_if_null(ops, setprocattr);
        set_to_dummy_if_null(ops, secid_to_secctx);
+       set_to_dummy_if_null(ops, secctx_to_secid);
        set_to_dummy_if_null(ops, release_secctx);
 #ifdef CONFIG_SECURITY_NETWORK
        set_to_dummy_if_null(ops, unix_stream_connect);