| 1 | /* Reentrant function to return the current login name. Hurd version. |
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| 2 | Copyright (C) 1996-2024 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 <unistd.h> |
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| 21 | #include <hurd.h> |
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| 22 | #include <string.h> |
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| 23 | |
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| 24 | /* Return at most NAME_LEN characters of the login name of the user in NAME. |
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| 25 | If it cannot be determined or some other error occurred, return the error |
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| 26 | code. Otherwise return 0. */ |
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| 27 | int |
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| 28 | __getlogin_r (char *name, size_t name_len) |
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| 29 | { |
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| 30 | string_t login; |
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| 31 | error_t err; |
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| 32 | |
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| 33 | if (err = __USEPORT (PROC, __proc_getlogin (port, login))) |
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| 34 | return __hurd_fail (err), err; |
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| 35 | |
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| 36 | size_t len = __strnlen (login, sizeof login - 1) + 1; |
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| 37 | if (len > name_len) |
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| 38 | return __hurd_fail (ERANGE), ERANGE; |
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| 39 | |
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| 40 | memcpy (name, login, len); |
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| 41 | return 0; |
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| 42 | } |
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| 43 | libc_hidden_def (__getlogin_r) |
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| 44 | weak_alias (__getlogin_r, getlogin_r) |
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| 45 | libc_hidden_weak (getlogin_r) |
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| 46 | |
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