diff options
Diffstat (limited to 'sysdeps/mach/hurd/sendmsg.c')
| -rw-r--r-- | sysdeps/mach/hurd/sendmsg.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/sysdeps/mach/hurd/sendmsg.c b/sysdeps/mach/hurd/sendmsg.c deleted file mode 100644 index 2f01efe0f7..0000000000 --- a/sysdeps/mach/hurd/sendmsg.c +++ /dev/null @@ -1,165 +0,0 @@ -/* Copyright (C) 2001-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public License as - published by the Free Software Foundation; either version 2.1 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; see the file COPYING.LIB. If - not, see <http://www.gnu.org/licenses/>. */ - -#include <errno.h> -#include <string.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include <hurd.h> -#include <hurd/fd.h> -#include <hurd/ifsock.h> -#include <hurd/socket.h> -#include "hurd/hurdsocket.h" - -/* Send a message described MESSAGE on socket FD. - Returns the number of bytes sent, or -1 for errors. */ -ssize_t -__libc_sendmsg (int fd, const struct msghdr *message, int flags) -{ - error_t err = 0; - struct sockaddr_un *addr = message->msg_name; - socklen_t addr_len = message->msg_namelen; - addr_port_t aport = MACH_PORT_NULL; - union - { - char *ptr; - vm_address_t addr; - } data = { .ptr = NULL }; - char data_buf[2048]; - mach_msg_type_number_t len; - mach_msg_type_number_t amount; - int dealloc = 0; - int i; - - /* Find the total number of bytes to be written. */ - len = 0; - for (i = 0; i < message->msg_iovlen; i++) - { - if (message->msg_iov[i].iov_len > 0) - { - /* As an optimization, if we only have a single non-empty - iovec, we set DATA and LEN from it. */ - if (len == 0) - data.ptr = message->msg_iov[i].iov_base; - else - data.ptr = NULL; - - len += message->msg_iov[i].iov_len; - } - } - - if (data.ptr == NULL) - { - size_t to_copy; - char *buf; - - /* Allocate a temporary buffer to hold the data. For small - amounts of data, we allocate a buffer on the stack. Larger - amounts of data are stored in a page-aligned buffer. The - limit of 2048 bytes is inspired by the MiG stubs. */ - if (len > 2048) - { - err = __vm_allocate (__mach_task_self (), &data.addr, len, 1); - if (err) - { - __set_errno (err); - return -1; - } - dealloc = 1; - } - else - data.ptr = data_buf; - - /* Copy the data into DATA. */ - to_copy = len; - buf = data.ptr; - for (i = 0; i < len; i++) - { -#define min(a, b) ((a) > (b) ? (b) : (a)) - size_t copy = min (message->msg_iov[i].iov_len, to_copy); - - buf = __mempcpy (buf, message->msg_iov[i].iov_base, copy); - - to_copy -= copy; - if (to_copy == 0) - break; - } - } - - if (addr) - { - if (addr->sun_family == AF_LOCAL) - { - char *name = _hurd_sun_path_dupa (addr, addr_len); - /* For the local domain, we must look up the name as a file - and talk to it with the ifsock protocol. */ - file_t file = __file_name_lookup (name, 0, 0); - if (file == MACH_PORT_NULL) - { - if (dealloc) - __vm_deallocate (__mach_task_self (), data.addr, len); - return -1; - } - err = __ifsock_getsockaddr (file, &aport); - __mach_port_deallocate (__mach_task_self (), file); - if (err == MIG_BAD_ID || err == EOPNOTSUPP) - /* The file did not grok the ifsock protocol. */ - err = ENOTSOCK; - if (err) - { - if (dealloc) - __vm_deallocate (__mach_task_self (), data.addr, len); - return __hurd_fail (err); - } - } - else - err = EIEIO; - } - - err = HURD_DPORT_USE (fd, - ({ - if (err) - err = __socket_create_address (port, - addr->sun_family, - (char *) addr, - addr_len, - &aport); - if (! err) - { - /* Send the data. */ - err = __socket_send (port, aport, - flags, data.ptr, len, - NULL, - MACH_MSG_TYPE_COPY_SEND, 0, - message->msg_control, - message->msg_controllen, - &amount); - __mach_port_deallocate (__mach_task_self (), - aport); - } - err; - })); - - if (dealloc) - __vm_deallocate (__mach_task_self (), data.addr, len); - - return err ? __hurd_sockfail (fd, flags, err) : amount; -} - -weak_alias (__libc_sendmsg, sendmsg) -weak_alias (__libc_sendmsg, __sendmsg) |