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32 #ifndef _SYS_STATVFS_H_
33 #define _SYS_STATVFS_H_
35 #include <sys/cdefs.h>
36 #include <sys/_types.h>
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.)
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
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
60 fsblkcnt_t f_bavail; /* Number of blocks */
63 fsfilcnt_t f_favail; /* Number of files (e.g., inodes) */
66 unsigned long f_bsize; /* Size of blocks counted above */
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) */
73 /* flag bits for f_flag: */
78 int fstatvfs(int, struct statvfs *);
79 int statvfs(const char *__restrict, struct statvfs *__restrict);
81 #endif /* _SYS_STATVFS_H_ */