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30 .\" @(#)statfs.2 8.5 (Berkeley) 5/24/95
37 .Nd file system statistics
44 header defines the structures and functions that
45 return information about a mounted file system.
48 structure is defined as follows:
52 unsigned long f_bsize; /* system block size */
53 unsigned long f_frsize; /* system fragment size */
55 fsblkcnt_t f_blocks; /* number of blocks in file system */
56 fsblkcnt_t f_bfree; /* free blocks avail in file system */
57 fsblkcnt_t f_bavail; /* free blocks avail to non-root */
59 fsfilcnt_t f_files; /* total file nodes in file system */
60 fsfilcnt_t f_ffree; /* free file nodes in file system */
61 fsfilcnt_t f_favail; /* free file nodes avail to non-root */
63 unsigned long f_fsid; /* File system ID */
65 unsigned long f_flag; /* flags */
67 unsigned long f_namemax;/* maximum filename length */
73 argument can have the following bits set:
74 .Bl -tag -width ST_SYNCHRONOUS
76 The filesystem is mounted read-only;
77 Even the super-user may not write on it.
79 Setuid and setgid bits on files are not honored when they are executed.
81 File names longer than NAME_MAX are not truncated.
88 header first appeared in