Ejemplos de posix_acl_from_disk en C++ (Cpp)

Ejemplo n.º 1

Archivo: xattr_acl.c Proyecto: Dronevery/JetsonTK1-kernel

/*
 * Inode operation get_posix_acl().
 *
 * inode->i_sem: down
 * BKL held [before 2.5.x]
 */
struct posix_acl *
reiserfs_get_acl(struct inode *inode, int type)
{
	char *name, *value;
	struct posix_acl *acl, **p_acl;
	size_t size;
	int retval;
        struct reiserfs_inode_info *reiserfs_i = REISERFS_I(inode);

        switch (type) {
            case ACL_TYPE_ACCESS:
                name = XATTR_NAME_ACL_ACCESS;
                p_acl = &reiserfs_i->i_acl_access;
                break;
            case ACL_TYPE_DEFAULT:
                name = XATTR_NAME_ACL_DEFAULT;
                p_acl = &reiserfs_i->i_acl_default;
                break;
            default:
                return ERR_PTR (-EINVAL);
        }

        if (IS_ERR (*p_acl)) {
            if (PTR_ERR (*p_acl) == -ENODATA)
                return NULL;
        } else if (*p_acl != NULL)
            return posix_acl_dup (*p_acl);

        size = reiserfs_xattr_get (inode, name, NULL, 0);
        if ((int)size < 0) {
            if (size == -ENODATA || size == -ENOSYS) {
		*p_acl = ERR_PTR (-ENODATA);
		return NULL;
            }
            return ERR_PTR (size);
        }

        value = kmalloc (size, GFP_NOFS);
        if (!value)
            return ERR_PTR (-ENOMEM);

	retval = reiserfs_xattr_get(inode, name, value, size);
	if (retval == -ENODATA || retval == -ENOSYS) {
		/* This shouldn't actually happen as it should have
		   been caught above.. but just in case */
		acl = NULL;
		*p_acl = ERR_PTR (-ENODATA);
        } else if (retval < 0) {
		acl = ERR_PTR(retval);
	} else {
		acl = posix_acl_from_disk(value, retval);
		*p_acl = posix_acl_dup (acl);
        }

	kfree(value);
	return acl;
}

Ejemplo n.º 2

Archivo: xattr_acl.c Proyecto: AD5GB/kernel_n5_3.10-experimental

/*
 * Inode operation get_posix_acl().
 *
 * inode->i_mutex: down
 * BKL held [before 2.5.x]
 */
struct posix_acl *reiserfs_get_acl(struct inode *inode, int type)
{
	char *name, *value;
	struct posix_acl *acl;
	int size;
	int retval;

	acl = get_cached_acl(inode, type);
	if (acl != ACL_NOT_CACHED)
		return acl;

	switch (type) {
	case ACL_TYPE_ACCESS:
		name = POSIX_ACL_XATTR_ACCESS;
		break;
	case ACL_TYPE_DEFAULT:
		name = POSIX_ACL_XATTR_DEFAULT;
		break;
	default:
		BUG();
	}

	size = reiserfs_xattr_get(inode, name, NULL, 0);
	if (size < 0) {
		if (size == -ENODATA || size == -ENOSYS) {
			set_cached_acl(inode, type, NULL);
			return NULL;
		}
		return ERR_PTR(size);
	}

	value = kmalloc(size, GFP_NOFS);
	if (!value)
		return ERR_PTR(-ENOMEM);

	retval = reiserfs_xattr_get(inode, name, value, size);
	if (retval == -ENODATA || retval == -ENOSYS) {
		/* This shouldn't actually happen as it should have
		   been caught above.. but just in case */
		acl = NULL;
	} else if (retval < 0) {
		acl = ERR_PTR(retval);
	} else {
		acl = posix_acl_from_disk(value, retval);
	}
	if (!IS_ERR(acl))
		set_cached_acl(inode, type, acl);

	kfree(value);
	return acl;
}