RepoMirrors
/
musl
mirror of git://git.musl-libc.org/musl
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
musl/include/sys/statvfs.h

58 lines
1.2 KiB
C
Raw Normal View History

initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifndef _SYS_STATVFS_H
#define _SYS_STATVFS_H
fix all missing instances of __cplusplus checks/extern "C" in headers patch by Arvid Picciani (aep)
2011-11-11 01:40:06 +00:00
#ifdef __cplusplus
extern "C" {
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
default features: make musl usable without feature test macros the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
2012-09-08 03:13:55 +00:00
#include <features.h>
use restrict everywhere it's required by c99 and/or posix 2008 to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2012-09-07 02:44:55 +00:00
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#define __NEED_fsblkcnt_t
#define __NEED_fsfilcnt_t
#include <bits/alltypes.h>
fix the definition of struct statvfs to match lsb abi at the same time, make struct statfs match the traditional definition and make it more useful, especially the fsid_t stuff.
2011-09-20 03:35:48 +00:00
struct statvfs {
unsigned long f_bsize, f_frsize;
fsblkcnt_t f_blocks, f_bfree, f_bavail;
fsfilcnt_t f_files, f_ffree, f_favail;
#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned long f_fsid;
unsigned :8*(2*sizeof(int)-sizeof(long));
#else
unsigned :8*(2*sizeof(int)-sizeof(long));
unsigned long f_fsid;
#endif
unsigned long f_flag, f_namemax;
statvfs: allocate spare for f_type This is the only missing part in struct statvfs. The LSB calls [f]statfs() deprecated, and its weird types are definitely off-putting. However, its use is required to get f_type. Instead, allocate one of the six spares to f_type, copied directly from struct statfs. This then becomes a small extension to the standard interface on Linux, instead of two different interfaces, one of which is quite odd due to being an ABI type, and there no longer is any reason to use statfs(). The underlying kernel type is a mess, but all architectures agree on u32 (or more) for the ABI, and all filesystem magicks are 32-bit integers. Since commit 6567db65f495cf7c11f5c1e60a3e54543d5a69bc (prior to 1.0.0), the spare slots have been zero-filled, so on all versions that may be reasonably be encountered in the wild, applications can rely on a nonzero f_type as indication that the new field has been filled in.
2023-08-17 20:05:14 +00:00
unsigned int f_type;
int __reserved[5];
fix the definition of struct statvfs to match lsb abi at the same time, make struct statfs match the traditional definition and make it more useful, especially the fsid_t stuff.
2011-09-20 03:35:48 +00:00
};
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
use restrict everywhere it's required by c99 and/or posix 2008 to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2012-09-07 02:44:55 +00:00
int statvfs (const char *__restrict, struct statvfs *__restrict);
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
int fstatvfs (int, struct statvfs *);
#define ST_RDONLY 1
#define ST_NOSUID 2
#define ST_NODEV 4
#define ST_NOEXEC 8
#define ST_SYNCHRONOUS 16
#define ST_MANDLOCK 64
#define ST_WRITE 128
#define ST_APPEND 256
#define ST_IMMUTABLE 512
#define ST_NOATIME 1024
#define ST_NODIRATIME 2048
add ST_RELATIME to statvfs.h
2018-07-13 00:41:30 +00:00
#define ST_RELATIME 4096
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
remove LFS64 programming interfaces (macro-only) from _GNU_SOURCE these badly pollute the namespace with macros whenever _GNU_SOURCE is defined, which is always the case with g++, and especially tends to interfere with C++ constructs. as our implementation of these was macro-only, their removal cannot affect any existing binaries. at the source level, portable software should be prepared for them not to exist. for now, they are left in place with explicit _LARGEFILE64_SOURCE. this provides an easy temporary path for integrators/distributions to get packages building again right away if they break while working on a proper, upstreamable fix. the intent is that this be a very short-term measure and that the macros be removed entirely in the next release cycle.
2022-09-27 19:04:05 +00:00
#if defined(_LARGEFILE64_SOURCE)
add *64 junk for sys/*.h headers
2012-05-04 04:31:25 +00:00
#define statvfs64 statvfs
#define fstatvfs64 fstatvfs
#define fsblkcnt64_t fsblkcnt_t
#define fsfilcnt64_t fsfilcnt_t
#endif
fix all missing instances of __cplusplus checks/extern "C" in headers patch by Arvid Picciani (aep)
2011-11-11 01:40:06 +00:00
#ifdef __cplusplus
}
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#endif