| 1 | /* Set the sun_path member of struct sockaddr_un. |
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| 2 | Copyright (C) 2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <errno.h> |
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| 20 | #include <string.h> |
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| 21 | #include <sys/socket.h> |
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| 22 | #include <sys/un.h> |
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| 23 | |
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| 24 | int |
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| 25 | __sockaddr_un_set (struct sockaddr_un *addr, const char *pathname) |
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| 26 | { |
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| 27 | size_t name_length = strlen (pathname); |
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| 28 | |
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| 29 | /* The kernel supports names of exactly sizeof (addr->sun_path) |
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| 30 | bytes, without a null terminator, but userspace does not; see the |
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| 31 | SUN_LEN macro. */ |
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| 32 | if (name_length >= sizeof (addr->sun_path)) |
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| 33 | { |
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| 34 | __set_errno (EINVAL); /* Error code used by the kernel. */ |
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| 35 | return -1; |
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| 36 | } |
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| 37 | |
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| 38 | addr->sun_family = AF_UNIX; |
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| 39 | memcpy (addr->sun_path, pathname, name_length + 1); |
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| 40 | return 0; |
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| 41 | } |
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| 42 | |
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