40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* Copyright (C) 2010-2017 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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<http://www.gnu.org/licenses/>. */
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#include <pwd.h>
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#include <unistd.h>
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#include <not-cancel.h>
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#define STATIC static
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#define getlogin getlogin_fd0
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#include <sysdeps/unix/getlogin.c>
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#undef getlogin
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/* Return the login name of the user, or NULL if it can't be determined.
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The returned pointer, if not NULL, is good only until the next call. */
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char *
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getlogin (void)
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{
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int res = __getlogin_r_loginuid (name, sizeof (name));
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if (res >= 0)
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return res == 0 ? name : NULL;
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return getlogin_fd0 ();
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}
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