static int
xfs_xattr_set(struct dentry *dentry, const char *name, const void *value,
size_t size, int flags, int xflags)
{
struct xfs_inode *ip = XFS_I(d_inode(dentry));
int error;
if (strcmp(name, "") == 0)
return -EINVAL;
/* Convert Linux syscall to XFS internal ATTR flags */
if (flags & XATTR_CREATE)
xflags |= ATTR_CREATE;
if (flags & XATTR_REPLACE)
xflags |= ATTR_REPLACE;
if (!value)
return xfs_attr_remove(ip, (unsigned char *)name, xflags);
error = xfs_attr_set(ip, (unsigned char *)name,
(void *)value, size, xflags);
if (!error)
xfs_forget_acl(d_inode(dentry), name, xflags);
return error;
}
STATIC int
xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
{
struct xfs_inode *ip = XFS_I(inode);
unsigned char *ea_name;
int error;
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;
switch (type) {
case ACL_TYPE_ACCESS:
ea_name = SGI_ACL_FILE;
break;
case ACL_TYPE_DEFAULT:
if (!S_ISDIR(inode->i_mode))
return acl ? -EACCES : 0;
ea_name = SGI_ACL_DEFAULT;
break;
default:
return -EINVAL;
}
if (acl) {
struct xfs_acl *xfs_acl;
int len = XFS_ACL_MAX_SIZE(ip->i_mount);
xfs_acl = kzalloc(len, GFP_KERNEL);
if (!xfs_acl)
return -ENOMEM;
xfs_acl_to_disk(xfs_acl, acl);
/* subtract away the unused acl entries */
len -= sizeof(struct xfs_acl_entry) *
(XFS_ACL_MAX_ENTRIES(ip->i_mount) - acl->a_count);
error = -xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl,
len, ATTR_ROOT);
kfree(xfs_acl);
} else {
/*
* A NULL ACL argument means we want to remove the ACL.
*/
error = -xfs_attr_remove(ip, ea_name, ATTR_ROOT);
/*
* If the attribute didn't exist to start with that's fine.
*/
if (error == -ENOATTR)
error = 0;
}
if (!error)
set_cached_acl(inode, type, acl);
return error;
}
int
xfs_attrmulti_attr_remove(
struct inode *inode,
unsigned char *name,
__uint32_t flags)
{
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
return xfs_attr_remove(XFS_I(inode), name, flags);
}
STATIC int
xfs_attrmulti_attr_remove(
struct inode *inode,
char *name,
__uint32_t flags)
{
if (IS_RDONLY(inode))
return -EROFS;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return EPERM;
return xfs_attr_remove(XFS_I(inode), name, flags);
}
int
xfs_attrmulti_attr_remove(
struct inode *inode,
unsigned char *name,
__uint32_t flags)
{
int error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
error = xfs_attr_remove(XFS_I(inode), name, flags);
if (!error)
xfs_forget_acl(inode, name, flags);
return error;
}
int
xfs_acl_vremove(
bhv_vnode_t *vp,
int kind)
{
int error;
VN_HOLD(vp);
error = xfs_acl_allow_set(vp, kind);
if (!error) {
error = xfs_attr_remove(xfs_vtoi(vp),
kind == _ACL_TYPE_DEFAULT?
SGI_ACL_DEFAULT: SGI_ACL_FILE,
ATTR_ROOT);
if (error == ENOATTR)
error = 0; /* 'scool */
}
VN_RELE(vp);
return -error;
}
static int
xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
struct inode *inode, const char *name, const void *value,
size_t size, int flags)
{
int xflags = handler->flags;
struct xfs_inode *ip = XFS_I(inode);
int error;
/* Convert Linux syscall to XFS internal ATTR flags */
if (flags & XATTR_CREATE)
xflags |= ATTR_CREATE;
if (flags & XATTR_REPLACE)
xflags |= ATTR_REPLACE;
if (!value)
return xfs_attr_remove(ip, (unsigned char *)name, xflags);
error = xfs_attr_set(ip, (unsigned char *)name,
(void *)value, size, xflags);
if (!error)
xfs_forget_acl(inode, name, xflags);
return error;
}
