/* Remove the link named NAME. */
int
__unlink (const char *name)
{
error_t err;
file_t dir;
const char *file;
dir = __directory_name_split (name, (char **) &file);
if (dir == MACH_PORT_NULL)
return -1;
err = __dir_unlink (dir, file);
__mach_port_deallocate (__mach_task_self (), dir);
if (err)
return __hurd_fail (err);
return 0;
}
/* Give the socket FD the local address ADDR (which is LEN bytes long). */
int
__bind (int fd, __CONST_SOCKADDR_ARG addrarg, socklen_t len)
{
addr_port_t aport;
error_t err;
const struct sockaddr_un *addr = addrarg.__sockaddr_un__;
if (addr->sun_family == AF_LOCAL)
{
/* For the local domain, we must create a node in the filesystem
using the ifsock translator and then fetch the address from it. */
file_t dir, node;
char name[len - offsetof (struct sockaddr_un, sun_path) + 1], *n;
strncpy (name, addr->sun_path, sizeof name - 1);
name[sizeof name - 1] = '\0'; /* Make sure */
dir = __file_name_split (name, &n);
if (dir == MACH_PORT_NULL)
return -1;
/* Create a new, unlinked node in the target directory. */
err = __dir_mkfile (dir, O_CREAT, 0666 & ~_hurd_umask, &node);
if (! err)
{
/* Set the node's translator to make it a local-domain socket. */
err = __file_set_translator (node,
FS_TRANS_EXCL | FS_TRANS_SET,
FS_TRANS_EXCL | FS_TRANS_SET, 0,
_HURD_IFSOCK, sizeof _HURD_IFSOCK,
MACH_PORT_NULL,
MACH_MSG_TYPE_COPY_SEND);
if (! err)
{
/* Link the node, now a socket, into the target directory. */
err = __dir_link (dir, node, n, 1);
if (err == EEXIST)
err = EADDRINUSE;
}
__mach_port_deallocate (__mach_task_self (), node);
if (! err)
{
/* Get a port to the ifsock translator. */
file_t ifsock = __file_name_lookup_under (dir, n, 0, 0);
if (ifsock == MACH_PORT_NULL)
{
err = errno;
/* If we failed, get rid of the node we created. */
__dir_unlink (dir, n);
}
else
{
/* Get the address port. */
err = __ifsock_getsockaddr (ifsock, &aport);
if (err == MIG_BAD_ID || err == EOPNOTSUPP)
/* We are not talking to /hurd/ifsock. Probably
someone came in after we linked our node, unlinked
it, and replaced it with a different node, before we
did our lookup. Treat it as if our link had failed
with EEXIST. */
err = EADDRINUSE;
}
__mach_port_deallocate (__mach_task_self (), ifsock);
}
}
__mach_port_deallocate (__mach_task_self (), dir);
if (err)
return __hurd_fail (err);
}
