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 30 #ifndef _SYS_STATVFS_H_ 31 #define _SYS_STATVFS_H_ 32 33 #include <sys/cdefs.h> 34 #include <sys/_types.h> 35 36 /* 37 * POSIX says we must define the fsblkcnt_t and fsfilcnt_t types here. 38 * Note that these must be unsigned integer types, so we have to be 39 * careful in converting the signed statfs members to the unsigned 40 * statvfs members. (Well, actually, we don't -- see below -- but 41 * a quality implementation should.) 42 */ 43 #ifndef _FSBLKCNT_T_DECLARED /* always declared together */ 44 typedef __fsblkcnt_t fsblkcnt_t; 45 typedef __fsfilcnt_t fsfilcnt_t; 46 #define _FSBLKCNT_T_DECLARED 47 #endif 48 49 /* 50 * The difference between `avail' and `free' is that `avail' represents 51 * space available to unprivileged processes, whereas `free' includes all 52 * unallocated space, including that reserved for privileged processes. 53 * Or at least, that's the most useful interpretation. (According to 54 * the letter of the standard, this entire interface is completely 55 * unspecified!) 56 */ 57 struct statvfs { 58 fsblkcnt_t f_bavail; /* Number of blocks */ 59 fsblkcnt_t f_bfree; 60 fsblkcnt_t f_blocks; 61 fsfilcnt_t f_favail; /* Number of files (e.g., inodes) */ 62 fsfilcnt_t f_ffree; 63 fsfilcnt_t f_files; 64 unsigned long f_bsize; /* Size of blocks counted above */ 65 unsigned long f_flag; 66 unsigned long f_frsize; /* Size of fragments */ 67 unsigned long f_fsid; /* Not meaningful */ 68 unsigned long f_namemax; /* Same as pathconf(_PC_NAME_MAX) */ 69 }; 70 71 /* flag bits for f_flag: */ 72 #define ST_RDONLY 0x1 73 #define ST_NOSUID 0x2 74 75 __BEGIN_DECLS 76 int fstatvfs(int, struct statvfs *); 77 int statvfs(const char *__restrict, struct statvfs *__restrict); 78 __END_DECLS 79 #endif /* _SYS_STATVFS_H_ */ 80