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1bfbaf7130
The __NR_fstatfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64. And newer ABIs also uses
the new fstatfs64 interface (where the struct size is used as
first argument).
So the default implementation now uses:
1. __NR_fstatfs64 for non-LFS call and handle overflow directly
There is no need to handle __NR_fstatfs since all architectures
that only support are LFS only.
2. __NR_fstatfs if defined or __NR_fstatfs64 otherwise for LFS
call.
Alpha is the only outlier, it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_fstatfs64 on
newer kernels (5.1+).
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* Return information about the filesystem on which FD resides.
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Copyright (C) 1996-2021 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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<https://www.gnu.org/licenses/>. */
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#define __fstatfs __fstatfs_disable
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#define fstatfs fstatfs_disable
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#include <sys/statfs.h>
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#include <sysdep.h>
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#include <kernel_stat.h>
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#undef __fstatfs
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#undef fstatfs
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/* Return information about the filesystem on which FD resides. */
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int
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__fstatfs64 (int fd, struct statfs64 *buf)
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{
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#ifdef __NR_fstatfs64
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return INLINE_SYSCALL_CALL (fstatfs64, fd, sizeof (*buf), buf);
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#else
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return INLINE_SYSCALL_CALL (fstatfs, fd, buf);
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#endif
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}
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weak_alias (__fstatfs64, fstatfs64)
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#if STATFS_IS_STATFS64
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weak_alias (__fstatfs64, __fstatfs)
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weak_alias (__fstatfs64, fstatfs)
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libc_hidden_ver (__fstatfs64, __fstatfs)
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#endif
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