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Stafford Horne 4dfa8f4870 open64: Force O_LARGEFILE on all architectures
When running tests on OpenRISC which has 32-bit wordsize but 64-bit
timesize it was found that O_LARGEFILE is not being set when calling
open64.  For 64-bit architectures the O_LARGEFILE flag is generally
implied by the kernel according to force_o_largefile.  However, for
32-bit architectures this is not done.

For this patch we unconditionally now set the O_LARGEFILE flag for
open64 class syscalls as there is no harm in doing so.

Tested on the OpenRISC the build works and timezone/tst-tzset passes
which was failing before.  I would expect this also would fix arc.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2021-12-31 07:10:19 +09:00

59 lines
1.8 KiB
C

/* Linux open syscall implementation, LFS.
Copyright (C) 1991-2021 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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <sysdep-cancel.h>
#include <shlib-compat.h>
/* Open FILE with access OFLAG. If O_CREAT or O_TMPFILE is in OFLAG,
a third argument is the file protection. */
int
__libc_open64 (const char *file, int oflag, ...)
{
int mode = 0;
if (__OPEN_NEEDS_MODE (oflag))
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, int);
va_end (arg);
}
return SYSCALL_CANCEL (openat, AT_FDCWD, file, oflag | O_LARGEFILE,
mode);
}
strong_alias (__libc_open64, __open64)
libc_hidden_weak (__open64)
weak_alias (__libc_open64, open64)
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (__libc_open64, __libc_open)
strong_alias (__libc_open64, __open)
libc_hidden_weak (__open)
weak_alias (__libc_open64, open)
#endif
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1, GLIBC_2_2)
compat_symbol (libc, __libc_open64, open64, GLIBC_2_2);
#endif