mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 05:00:15 +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>
62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
|
|
|
|
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 <time.h>
|
|
#include <sysdep.h>
|
|
#include <kernel_stat.h>
|
|
|
|
#if !STATFS_IS_STATFS64
|
|
|
|
/* Return information about the filesystem on which FILE resides. */
|
|
int
|
|
__statfs (const char *file, struct statfs *buf)
|
|
{
|
|
struct statfs64 buf64;
|
|
int rc = INLINE_SYSCALL_CALL (statfs64, file, sizeof (buf64), &buf64);
|
|
if (rc == 0)
|
|
{
|
|
buf->f_type = buf64.f_type;
|
|
buf->f_bsize = buf64.f_bsize;
|
|
buf->f_blocks = buf64.f_blocks;
|
|
buf->f_bfree = buf64.f_bfree;
|
|
buf->f_bavail = buf64.f_bavail;
|
|
buf->f_files = buf64.f_files;
|
|
buf->f_ffree = buf64.f_ffree;
|
|
buf->f_fsid = buf64.f_fsid;
|
|
buf->f_namelen = buf64.f_namelen;
|
|
buf->f_frsize = buf64.f_frsize;
|
|
buf->f_flags = buf64.f_flags;
|
|
memcpy (buf->f_spare, buf64.f_spare, sizeof (buf64.f_spare));
|
|
|
|
if ((fsblkcnt_t) buf64.f_blocks != buf64.f_blocks
|
|
|| (fsblkcnt_t) buf64.f_bfree != buf64.f_bfree
|
|
|| (fsblkcnt_t) buf64.f_bavail != buf64.f_bavail
|
|
|| (fsblkcnt_t) buf64.f_files != buf64.f_files
|
|
|| (fsblkcnt_t) buf64.f_ffree != buf64.f_ffree)
|
|
{
|
|
__set_errno (EOVERFLOW);
|
|
return -1;
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
libc_hidden_def (__statfs)
|
|
weak_alias (__statfs, statfs)
|
|
#endif
|