mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
f6e616435d
The __NR_statfs64 syscall is supported on all architectures but
aarch64, mips64, riscv64, and x86_64. And newer ABIs also uses
the new statfs64 interface (where the struct size is used as
second argument).
So the default implementation now uses:
1. __NR_statfs64 for non-LFS call and handle overflow directly
There is no need to handle __NR_statfs since all architectures
that only support are LFS only.
2. __NR_statfs if defined or __NR_statfs64 otherwise for LFS
call.
Alpha is the only outlier, since it is a 64-bit architecture which
provides non-LFS interface and only provides __NR_statfs64 on
newer kernels (v5.1+).
Checked on x86_64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/* Return information about the filesystem on which FILE resides. Linux/alpha.
|
|
Copyright (C) 1996-2021 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/statfs.h>
|
|
#include <sysdep.h>
|
|
#include <kernel_stat.h>
|
|
|
|
/* Return information about the filesystem on which FILE resides. */
|
|
int
|
|
__statfs64 (const char *file, struct statfs64 *buf)
|
|
{
|
|
int r = INLINE_SYSCALL_CALL (statfs64, file, sizeof (*buf), buf);
|
|
#if __ASSUME_STATFS64 == 0
|
|
if (r == -1 && errno == ENOSYS)
|
|
{
|
|
struct statfs buf32;
|
|
if (__statfs (file, &buf32) < 0)
|
|
return -1;
|
|
|
|
buf->f_type = buf32.f_type;
|
|
buf->f_bsize = buf32.f_bsize;
|
|
buf->f_blocks = buf32.f_blocks;
|
|
buf->f_bfree = buf32.f_bfree;
|
|
buf->f_bavail = buf32.f_bavail;
|
|
buf->f_files = buf32.f_files;
|
|
buf->f_ffree = buf32.f_ffree;
|
|
buf->f_fsid = buf32.f_fsid;
|
|
buf->f_namelen = buf32.f_namelen;
|
|
buf->f_frsize = buf32.f_frsize;
|
|
buf->f_flags = buf32.f_flags;
|
|
memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
|
|
}
|
|
#endif
|
|
return r;
|
|
}
|
|
weak_alias (__statfs64, statfs64)
|