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glibc/sysdeps/mach/hurd/getresuid.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

57 lines
1.6 KiB
C

/* getresuid -- fetch real user ID, effective user ID, and saved-set user ID
Copyright (C) 2002-2021 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 <unistd.h>
#include <hurd.h>
#include <hurd/id.h>
/* Fetch the real user ID, effective user ID, and saved-set user ID,
of the calling process. */
int
__getresuid (uid_t *ruid, uid_t *euid, uid_t *suid)
{
error_t err;
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_id.lock);
err = _hurd_check_ids ();
if (!err)
{
if (_hurd_id.aux.nuids < 1)
/* We do not even have a real UID. */
err = EGRATUITOUS;
else
{
uid_t real = _hurd_id.aux.uids[0];
*ruid = real;
*euid = _hurd_id.gen.nuids < 1 ? real : _hurd_id.gen.uids[0];
*suid = _hurd_id.aux.nuids < 2 ? real : _hurd_id.aux.uids[1];
}
}
__mutex_unlock (&_hurd_id.lock);
HURD_CRITICAL_END;
return __hurd_fail (err);
}
libc_hidden_def (__getresuid)
weak_alias (__getresuid, getresuid)