platform_bionic/libc/bionic/sys_statvfs.cpp
Elliott Hughes 3469e7df9b Tidy and document the inline/__inline/__inline__ situation.
We can (and should) use `inline` in C++ but not in C headers that
need to support ANSI/C89/C90. `__inline__` works everywhere, but
traditionally we've used the BSD `__inline` in public headers.

Change-Id: I920e0a1f5fcd01cf8ddd89240ef66b25c50378d7
2024-05-15 16:06:07 +00:00

51 lines
1.7 KiB
C++

/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sys/statfs.h>
#include <sys/statvfs.h>
static inline void __bionic_statfs_to_statvfs(const struct statfs* src, struct statvfs* dst) {
dst->f_bsize = src->f_bsize;
dst->f_frsize = src->f_frsize;
dst->f_blocks = src->f_blocks;
dst->f_bfree = src->f_bfree;
dst->f_bavail = src->f_bavail;
dst->f_files = src->f_files;
dst->f_ffree = src->f_ffree;
dst->f_favail = src->f_ffree;
dst->f_fsid = src->f_fsid.__val[0] | static_cast<uint64_t>(src->f_fsid.__val[1]) << 32;
dst->f_flag = src->f_flags;
dst->f_namemax = src->f_namelen;
}
int statvfs(const char* path, struct statvfs* result) {
struct statfs tmp;
if (statfs(path, &tmp) == -1) return -1;
__bionic_statfs_to_statvfs(&tmp, result);
return 0;
}
int fstatvfs(int fd, struct statvfs* result) {
struct statfs tmp;
if (fstatfs(fd, &tmp) == -1) return -1;
__bionic_statfs_to_statvfs(&tmp, result);
return 0;
}
// Historically we provided actual symbols for statvfs64 and fstatvfs64.
// They're not particularly useful, but we can't take them away.
__strong_alias(statvfs64, statvfs);
__strong_alias(fstatvfs64, fstatvfs);