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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>
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/* Get filesystem statistics. Linux/alpha.
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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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#include <sys/statfs.h>
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#include <sysdep.h>
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#include <kernel_stat.h>
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/* Return information about the filesystem on which FILE resides. */
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int
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__fstatfs64 (int fd, struct statfs64 *buf)
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{
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int r = INLINE_SYSCALL_CALL (fstatfs64, fd, sizeof (*buf), buf);
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#if __ASSUME_STATFS64 == 0
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if (r == -1 && errno == ENOSYS)
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{
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struct statfs buf32;
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if (__fstatfs (fd, &buf32) < 0)
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return -1;
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buf->f_type = buf32.f_type;
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buf->f_bsize = buf32.f_bsize;
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buf->f_blocks = buf32.f_blocks;
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buf->f_bfree = buf32.f_bfree;
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buf->f_bavail = buf32.f_bavail;
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buf->f_files = buf32.f_files;
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buf->f_ffree = buf32.f_ffree;
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buf->f_fsid = buf32.f_fsid;
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buf->f_namelen = buf32.f_namelen;
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buf->f_frsize = buf32.f_frsize;
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buf->f_flags = buf32.f_flags;
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memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
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}
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#endif
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return r;
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}
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weak_alias (__fstatfs64, fstatfs64)
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