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/* Set the sun_path member of struct sockaddr_un.
Copyright (C) 2022-2024 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; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
int
__sockaddr_un_set (struct sockaddr_un *addr, const char *pathname)
{
size_t name_length = strlen (pathname);
/* The kernel supports names of exactly sizeof (addr->sun_path)
bytes, without a null terminator, but userspace does not; see the
SUN_LEN macro. */
if (name_length >= sizeof (addr->sun_path))
{
__set_errno (EINVAL); /* Error code used by the kernel. */
return -1;
}
addr->sun_family = AF_UNIX;
memcpy (addr->sun_path, pathname, name_length + 1);
return 0;
}
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