Commit c3fa141c authored by Andreas Gruenbacher's avatar Andreas Gruenbacher Committed by Greg Kroah-Hartman

posix_acl: Add set_posix_acl

commit 485e71e8 upstream.

Factor out part of posix_acl_xattr_set into a common function that takes
a posix_acl, which nfsd can also call.

The prototype already exists in include/linux/posix_acl.h.
Signed-off-by: default avatarAndreas Gruenbacher <agruenba@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f78ffdc2
......@@ -788,6 +788,28 @@ posix_acl_xattr_get(const struct xattr_handler *handler,
return error;
}
int
set_posix_acl(struct inode *inode, int type, struct posix_acl *acl)
{
if (!IS_POSIXACL(inode))
return -EOPNOTSUPP;
if (!inode->i_op->set_acl)
return -EOPNOTSUPP;
if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
return acl ? -EACCES : 0;
if (!inode_owner_or_capable(inode))
return -EPERM;
if (acl) {
int ret = posix_acl_valid(acl);
if (ret)
return ret;
}
return inode->i_op->set_acl(inode, acl, type);
}
EXPORT_SYMBOL(set_posix_acl);
static int
posix_acl_xattr_set(const struct xattr_handler *handler,
struct dentry *dentry, const char *name,
......@@ -799,30 +821,13 @@ posix_acl_xattr_set(const struct xattr_handler *handler,
if (strcmp(name, "") != 0)
return -EINVAL;
if (!IS_POSIXACL(inode))
return -EOPNOTSUPP;
if (!inode->i_op->set_acl)
return -EOPNOTSUPP;
if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
return value ? -EACCES : 0;
if (!inode_owner_or_capable(inode))
return -EPERM;
if (value) {
acl = posix_acl_from_xattr(&init_user_ns, value, size);
if (IS_ERR(acl))
return PTR_ERR(acl);
if (acl) {
ret = posix_acl_valid(acl);
if (ret)
goto out;
}
}
ret = inode->i_op->set_acl(inode, acl, handler->flags);
out:
ret = set_posix_acl(inode, handler->flags, acl);
posix_acl_release(acl);
return ret;
}
......
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