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/* Convert between different 'struct statfs' and 'struct statvfs' formats.
Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Bruno Haible <bruno@clisp.org>, 2002.
Contributed by Petr Salinger, 2006.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdint.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/syslimits.h>
#include <sys/statvfs.h>
#include <sys/statfs.h>
/*
* filesystem statistics
*/
#define MFSNAMELEN 16 /* length of type name including null */
#define MNAMELEN 88 /* size of on/from name bufs */
struct statfs_fbsd5 {
uint32_t f_version; /* structure version number */
uint32_t f_type; /* type of filesystem */
uint64_t f_flags; /* copy of mount exported flags */
uint64_t f_bsize; /* filesystem fragment size */
uint64_t f_iosize; /* optimal transfer block size */
uint64_t f_blocks; /* total data blocks in filesystem */
uint64_t f_bfree; /* free blocks in filesystem */
int64_t f_bavail; /* free blocks avail to non-superuser */
uint64_t f_files; /* total file nodes in filesystem */
int64_t f_ffree; /* free nodes avail to non-superuser */
uint64_t f_syncwrites; /* count of sync writes since mount */
uint64_t f_asyncwrites; /* count of async writes since mount */
uint64_t f_syncreads; /* count of sync reads since mount */
uint64_t f_asyncreads; /* count of async reads since mount */
uint64_t f_spare[10]; /* unused spare */
uint32_t f_namemax; /* maximum filename length */
__uid_t f_owner; /* user that mounted the filesystem */
__fsid_t f_fsid; /* filesystem id */
char f_charspare[80]; /* spare string space */
char f_fstypename[MFSNAMELEN]; /* filesystem type name */
char f_mntfromname[MNAMELEN]; /* mounted filesystem */
char f_mntonname[MNAMELEN]; /* directory on which mounted */
};
extern int __syscall_getfsstat(struct statfs_fbsd5 *buf, long bufsize, int flags);
extern int __syscall_statfs(const char *path, struct statfs_fbsd5 *buf);
extern int __syscall_fstatfs(int fd, struct statfs_fbsd5 *buf);
extern int __syscall_fhstatfs(const struct fhandle *u_fhp, struct statfs_fbsd5 *buf);
/*
* Convert a FreeBSD 5.x format statfs structure to an glibc format statfs structure.
*/
static inline void
statfs5_to_statfs(const struct statfs_fbsd5 *pk, struct statfs *p32)
{
memset(p32, 0, sizeof(*p32));
p32->f_version = pk->f_version;
p32->f_bsize = MIN(pk->f_bsize, ULONG_MAX);
p32->f_iosize = MIN(pk->f_iosize, ULONG_MAX);
p32->f_blocks = MIN(pk->f_blocks, ULONG_MAX);
p32->f_bfree = MIN(pk->f_bfree, ULONG_MAX);
p32->f_bavail = MIN(pk->f_bavail, ULONG_MAX);
p32->f_files = MIN(pk->f_files, ULONG_MAX);
p32->f_ffree = MIN(pk->f_ffree, ULONG_MAX);
p32->f_fsid = pk->f_fsid;
p32->f_owner = pk->f_owner;
p32->f_type = pk->f_type;
p32->f_flags = pk->f_flags;
p32->f_syncwrites = MIN(pk->f_syncwrites, ULONG_MAX);
p32->f_asyncwrites = MIN(pk->f_asyncwrites, ULONG_MAX);
p32->f_syncreads = MIN(pk->f_syncreads, ULONG_MAX);
p32->f_asyncreads = MIN(pk->f_asyncreads, ULONG_MAX);
p32->f_namemax = MIN(pk->f_namemax, USHRT_MAX);
memcpy(p32->f_fstypename, pk->f_fstypename, sizeof (p32->f_fstypename));
memcpy(p32->f_mntonname, pk->f_mntonname, sizeof (p32->f_mntonname));
memcpy(p32->f_mntfromname,pk->f_mntfromname,sizeof (p32->f_mntfromname));
}
/*
* Convert a FreeBSD 5.x format statfs structure to an glibc format statfs64 structure.
*/
static inline void
statfs5_to_statfs64(const struct statfs_fbsd5 *pk, struct statfs64 *p64)
{
memset(p64, 0, sizeof(*p64));
p64->f_version = pk->f_version;
p64->f_bsize = MIN(pk->f_bsize, ULONG_MAX);
p64->f_iosize = MIN(pk->f_iosize, ULONG_MAX);
p64->f_blocks = pk->f_blocks;
p64->f_bfree = pk->f_bfree;
p64->f_bavail = pk->f_bavail;
p64->f_files = pk->f_files;
p64->f_ffree = pk->f_ffree;
p64->f_fsid = pk->f_fsid;
p64->f_owner = pk->f_owner;
p64->f_type = pk->f_type;
p64->f_flags = pk->f_flags;
p64->f_syncwrites = MIN(pk->f_syncwrites, ULONG_MAX);
p64->f_asyncwrites = MIN(pk->f_asyncwrites, ULONG_MAX);
p64->f_syncreads = MIN(pk->f_syncreads, ULONG_MAX);
p64->f_asyncreads = MIN(pk->f_asyncreads, ULONG_MAX);
p64->f_namemax = MIN(pk->f_namemax, USHRT_MAX);
memcpy(p64->f_fstypename, pk->f_fstypename, sizeof (p64->f_fstypename));
memcpy(p64->f_mntonname, pk->f_mntonname, sizeof (p64->f_mntonname));
memcpy(p64->f_mntfromname,pk->f_mntfromname,sizeof (p64->f_mntfromname));
}
/*
* Convert a FreeBSD 5.x format statfs structure to an glibc format statvfs structure.
*/
static inline void
statfs5_to_statvfs (const struct statfs_fbsd5 *pk, struct statvfs *p32)
{
/* FIXME: What is the difference between f_bsize and f_frsize ? */
p32->f_bsize = MIN(pk->f_bsize, ULONG_MAX);
p32->f_frsize = MIN(pk->f_bsize, ULONG_MAX);
p32->f_blocks = MIN(pk->f_blocks, ULONG_MAX);
p32->f_bfree = MIN(pk->f_bfree, ULONG_MAX);
p32->f_bavail = MIN(pk->f_bavail, ULONG_MAX);
p32->f_files = MIN(pk->f_files, ULONG_MAX);
p32->f_ffree = MIN(pk->f_ffree, ULONG_MAX);
p32->f_favail = MIN(pk->f_ffree, ULONG_MAX); /* Hmm. May be filesystem dependent. */
memcpy(&(p32->f_fsid), &(pk->f_fsid), sizeof(__fsid_t));
p32->f_flag =
(pk->f_flags & MNT_RDONLY ? ST_RDONLY : 0)
| (pk->f_flags & MNT_NOSUID ? ST_NOSUID : 0)
| (pk->f_flags & MNT_NOEXEC ? ST_NOEXEC : 0)
| (pk->f_flags & MNT_SYNCHRONOUS ? ST_SYNCHRONOUS : 0)
| (pk->f_flags & MNT_NOATIME ? ST_NOATIME : 0);
p32->f_namemax = pk->f_namemax;
memset (p32->f_spare, '\0', sizeof (p32->f_spare));
}
/*
* Convert a FreeBSD 5.x format statfs structure to an glibc format statvfs64 structure.
*/
static inline void
statfs5_to_statvfs64 (const struct statfs_fbsd5 *pk, struct statvfs64 *p64)
{
/* FIXME: What is the difference between f_bsize and f_frsize ? */
p64->f_bsize = MIN(pk->f_bsize, ULONG_MAX);
p64->f_frsize = MIN(pk->f_bsize, ULONG_MAX);
p64->f_blocks = pk->f_blocks;
p64->f_bfree = pk->f_bfree;
p64->f_bavail = pk->f_bavail;
p64->f_files = pk->f_files;
p64->f_ffree = pk->f_ffree;
p64->f_favail = pk->f_ffree; /* Hmm. May be filesystem dependent. */
memcpy(&(p64->f_fsid), &(pk->f_fsid), sizeof(__fsid_t));
p64->f_flag =
(pk->f_flags & MNT_RDONLY ? ST_RDONLY : 0)
| (pk->f_flags & MNT_NOSUID ? ST_NOSUID : 0)
| (pk->f_flags & MNT_NOEXEC ? ST_NOEXEC : 0)
| (pk->f_flags & MNT_SYNCHRONOUS ? ST_SYNCHRONOUS : 0)
| (pk->f_flags & MNT_NOATIME ? ST_NOATIME : 0);
p64->f_namemax = pk->f_namemax;
memset (p64->f_spare, '\0', sizeof (p64->f_spare));
}
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