| /* time -- Get number of seconds since Epoch. Linux/x86 version. |
| Copyright (C) 2015-2018 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 |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <time.h> |
| |
| #ifdef SHARED |
| |
| #include <dl-vdso.h> |
| #include <errno.h> |
| |
| static time_t |
| __time_syscall (time_t *t) |
| { |
| INTERNAL_SYSCALL_DECL (err); |
| return INTERNAL_SYSCALL (time, err, 1, t); |
| } |
| |
| # ifndef time_type |
| /* The i386 time.c includes this file with a defined time_type macro. |
| For x86_64 we have to define it to time as the internal symbol is the |
| ifunc'ed one. */ |
| # define time_type time |
| # endif |
| |
| #undef INIT_ARCH |
| #define INIT_ARCH() PREPARE_VERSION_KNOWN (linux26, LINUX_2_6); |
| /* If the vDSO is not available we fall back on the syscall. */ |
| libc_ifunc_hidden (time_type, time, |
| (_dl_vdso_vsym ("__vdso_time", &linux26) |
| ?: &__time_syscall)) |
| libc_hidden_def (time) |
| |
| #else |
| |
| # include <sysdep.h> |
| |
| time_t |
| time (time_t *t) |
| { |
| INTERNAL_SYSCALL_DECL (err); |
| return INTERNAL_SYSCALL (time, err, 1, t); |
| } |
| |
| #endif |
