glibc/sysdeps/mach/hurd/getuid.c
Paul Eggert 581c785bf3 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 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

58 lines
1.5 KiB
C

/* Copyright (C) 1993-2022 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>
/* Get the real user ID of the calling process. */
uid_t
__getuid (void)
{
error_t err;
uid_t uid;
retry:
HURD_CRITICAL_BEGIN;
__mutex_lock (&_hurd_id.lock);
if (err = _hurd_check_ids ())
{
errno = err;
uid = -1;
}
else if (_hurd_id.aux.nuids >= 1)
uid = _hurd_id.aux.uids[0];
else
{
/* We do not even have a real uid. */
errno = EGRATUITOUS;
uid = -1;
}
__mutex_unlock (&_hurd_id.lock);
HURD_CRITICAL_END;
if (uid == -1 && errno == EINTR)
/* Got a signal while inside an RPC of the critical section, retry again */
goto retry;
return uid;
}
weak_alias (__getuid, getuid)