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