make generic_acl slightly more generic

[safe/jmp/linux-2.6] / mm / shmem_acl.c

diff --git a/mm/shmem_acl.c b/mm/shmem_acl.c
deleted file mode 100644 (file)
index f8d5330..0000000
--- a/mm/shmem_acl.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * mm/shmem_acl.c
- *
- * (C) 2005 Andreas Gruenbacher <agruen@suse.de>
- *
- * This file is released under the GPL.
- */
-
-#include <linux/fs.h>
-#include <linux/shmem_fs.h>
-#include <linux/xattr.h>
-#include <linux/generic_acl.h>
-
-/**
- * shmem_get_acl  -   generic_acl_operations->getacl() operation
- */
-static struct posix_acl *
-shmem_get_acl(struct inode *inode, int type)
-{
-       struct posix_acl *acl = NULL;
-
-       spin_lock(&inode->i_lock);
-       switch(type) {
-               case ACL_TYPE_ACCESS:
-                       acl = posix_acl_dup(inode->i_acl);
-                       break;
-
-               case ACL_TYPE_DEFAULT:
-                       acl = posix_acl_dup(inode->i_default_acl);
-                       break;
-       }
-       spin_unlock(&inode->i_lock);
-
-       return acl;
-}
-
-/**
- * shmem_set_acl  -   generic_acl_operations->setacl() operation
- */
-static void
-shmem_set_acl(struct inode *inode, int type, struct posix_acl *acl)
-{
-       struct posix_acl *free = NULL;
-
-       spin_lock(&inode->i_lock);
-       switch(type) {
-               case ACL_TYPE_ACCESS:
-                       free = inode->i_acl;
-                       inode->i_acl = posix_acl_dup(acl);
-                       break;
-
-               case ACL_TYPE_DEFAULT:
-                       free = inode->i_default_acl;
-                       inode->i_default_acl = posix_acl_dup(acl);
-                       break;
-       }
-       spin_unlock(&inode->i_lock);
-       posix_acl_release(free);
-}
-
-struct generic_acl_operations shmem_acl_ops = {
-       .getacl = shmem_get_acl,
-       .setacl = shmem_set_acl,
-};
-
-static size_t
-shmem_xattr_list_acl(struct dentry *dentry, char *list, size_t list_size,
-               const char *name, size_t name_len, int type)
-{
-       return generic_acl_list(dentry->d_inode, &shmem_acl_ops,
-                               type, list, list_size);
-}
-
-static int
-shmem_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer,
-                    size_t size, int type)
-{
-       if (strcmp(name, "") != 0)
-               return -EINVAL;
-       return generic_acl_get(dentry->d_inode, &shmem_acl_ops, type,
-                              buffer, size);
-}
-
-static int
-shmem_xattr_set_acl(struct dentry *dentry, const char *name, const void *value,
-                    size_t size, int flags, int type)
-{
-       if (strcmp(name, "") != 0)
-               return -EINVAL;
-       return generic_acl_set(dentry->d_inode, &shmem_acl_ops, type,
-                              value, size);
-}
-
-struct xattr_handler shmem_xattr_acl_access_handler = {
-       .prefix = POSIX_ACL_XATTR_ACCESS,
-       .flags  = ACL_TYPE_ACCESS,
-       .list   = shmem_xattr_list_acl,
-       .get    = shmem_xattr_get_acl,
-       .set    = shmem_xattr_set_acl,
-};
-
-struct xattr_handler shmem_xattr_acl_default_handler = {
-       .prefix = POSIX_ACL_XATTR_DEFAULT,
-       .flags  = ACL_TYPE_DEFAULT,
-       .list   = shmem_xattr_list_acl,
-       .get    = shmem_xattr_get_acl,
-       .set    = shmem_xattr_set_acl,
-};
-
-/**
- * shmem_acl_init  -  Inizialize the acl(s) of a new inode
- */
-int
-shmem_acl_init(struct inode *inode, struct inode *dir)
-{
-       return generic_acl_init(inode, dir, &shmem_acl_ops);
-}
-
-/**
- * shmem_check_acl  -  check_acl() callback for generic_permission()
- */
-int
-shmem_check_acl(struct inode *inode, int mask)
-{
-       struct posix_acl *acl = shmem_get_acl(inode, ACL_TYPE_ACCESS);
-
-       if (acl) {
-               int error = posix_acl_permission(inode, acl, mask);
-               posix_acl_release(acl);
-               return error;
-       }
-       return -EAGAIN;
-}