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125 lines
3.7 KiB
C
125 lines
3.7 KiB
C
/* Copyright (C) 1992,94,95,96,97,98,2001,02 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/socket.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/socket.h>
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#include <hurd/paths.h>
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#include <fcntl.h>
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#include <stddef.h>
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#include <hurd/ifsock.h>
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#include <sys/un.h>
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#include <string.h>
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/* Give the socket FD the local address ADDR (which is LEN bytes long). */
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int
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__bind (int fd, __CONST_SOCKADDR_ARG addrarg, socklen_t len)
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{
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addr_port_t aport;
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error_t err;
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const struct sockaddr_un *addr = addrarg.__sockaddr_un__;
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if (addr->sun_family == AF_LOCAL)
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{
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/* For the local domain, we must create a node in the filesystem
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using the ifsock translator and then fetch the address from it. */
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file_t dir, node;
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char name[len - offsetof (struct sockaddr_un, sun_path) + 1], *n;
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strncpy (name, addr->sun_path, sizeof name - 1);
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name[sizeof name - 1] = '\0'; /* Make sure */
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dir = __file_name_split (name, &n);
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if (dir == MACH_PORT_NULL)
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return -1;
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/* Create a new, unlinked node in the target directory. */
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err = __dir_mkfile (dir, O_CREAT, 0666 & ~_hurd_umask, &node);
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if (! err)
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{
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/* Set the node's translator to make it a local-domain socket. */
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err = __file_set_translator (node,
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FS_TRANS_EXCL | FS_TRANS_SET,
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FS_TRANS_EXCL | FS_TRANS_SET, 0,
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_HURD_IFSOCK, sizeof _HURD_IFSOCK,
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MACH_PORT_NULL,
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MACH_MSG_TYPE_COPY_SEND);
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if (! err)
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{
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/* Link the node, now a socket, into the target directory. */
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err = __dir_link (dir, node, n, 1);
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if (err == EEXIST)
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err = EADDRINUSE;
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}
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__mach_port_deallocate (__mach_task_self (), node);
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if (! err)
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{
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/* Get a port to the ifsock translator. */
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file_t ifsock = __file_name_lookup_under (dir, n, 0, 0);
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if (ifsock == MACH_PORT_NULL)
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{
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err = errno;
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/* If we failed, get rid of the node we created. */
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__dir_unlink (dir, n);
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}
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else
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{
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/* Get the address port. */
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err = __ifsock_getsockaddr (ifsock, &aport);
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if (err == MIG_BAD_ID || err == EOPNOTSUPP)
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/* We are not talking to /hurd/ifsock. Probably
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someone came in after we linked our node, unlinked
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it, and replaced it with a different node, before we
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did our lookup. Treat it as if our link had failed
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with EEXIST. */
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err = EADDRINUSE;
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}
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__mach_port_deallocate (__mach_task_self (), ifsock);
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}
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}
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__mach_port_deallocate (__mach_task_self (), dir);
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if (err)
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return __hurd_fail (err);
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}
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else
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err = EIEIO;
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err = HURD_DPORT_USE (fd,
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({
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if (err)
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err = __socket_create_address (port,
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addr->sun_family,
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(char *) addr, len,
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&aport);
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if (! err)
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{
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err = __socket_bind (port, aport);
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__mach_port_deallocate (__mach_task_self (),
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aport);
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}
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err;
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}));
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return err ? __hurd_dfail (fd, err) : 0;
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}
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weak_alias (__bind, bind)
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