1 /*- 2 * Copyright 2002 Massachusetts Institute of Technology 3 * 4 * Permission to use, copy, modify, and distribute this software and 5 * its documentation for any purpose and without fee is hereby 6 * granted, provided that both the above copyright notice and this 7 * permission notice appear in all copies, that both the above 8 * copyright notice and this permission notice appear in all 9 * supporting documentation, and that the name of M.I.T. not be used 10 * in advertising or publicity pertaining to distribution of the 11 * software without specific, written prior permission. M.I.T. makes 12 * no representations about the suitability of this software for any 13 * purpose. It is provided "as is" without express or implied 14 * warranty. 15 * 16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS 17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _SYS_STATVFS_H_ 33 #define _SYS_STATVFS_H_ 34 35 #include <sys/cdefs.h> 36 #include <sys/_types.h> 37 38 /* 39 * POSIX says we must define the fsblkcnt_t and fsfilcnt_t types here. 40 * Note that these must be unsigned integer types, so we have to be 41 * careful in converting the signed statfs members to the unsigned 42 * statvfs members. (Well, actually, we don't -- see below -- but 43 * a quality implementation should.) 44 */ 45 #ifndef _FSBLKCNT_T_DECLARED /* always declared together */ 46 typedef __fsblkcnt_t fsblkcnt_t; 47 typedef __fsfilcnt_t fsfilcnt_t; 48 #define _FSBLKCNT_T_DECLARED 49 #endif 50 51 /* 52 * The difference between `avail' and `free' is that `avail' represents 53 * space available to unprivileged processes, whereas `free' includes all 54 * unallocated space, including that reserved for privileged processes. 55 * Or at least, that's the most useful interpretation. (According to 56 * the letter of the standard, this entire interface is completely 57 * unspecified!) 58 */ 59 struct statvfs { 60 fsblkcnt_t f_bavail; /* Number of blocks */ 61 fsblkcnt_t f_bfree; 62 fsblkcnt_t f_blocks; 63 fsfilcnt_t f_favail; /* Number of files (e.g., inodes) */ 64 fsfilcnt_t f_ffree; 65 fsfilcnt_t f_files; 66 unsigned long f_bsize; /* Size of blocks counted above */ 67 unsigned long f_flag; 68 unsigned long f_frsize; /* Size of fragments */ 69 unsigned long f_fsid; /* Not meaningful */ 70 unsigned long f_namemax; /* Same as pathconf(_PC_NAME_MAX) */ 71 }; 72 73 /* flag bits for f_flag: */ 74 #define ST_RDONLY 0x1 75 #define ST_NOSUID 0x2 76 77 __BEGIN_DECLS 78 int fstatvfs(int, struct statvfs *); 79 int statvfs(const char *__restrict, struct statvfs *__restrict); 80 __END_DECLS 81 #endif /* _SYS_STATVFS_H_ */ 82