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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "<sys/statvfs.h>" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" <sys/statvfs.h>
+.SH NAME
+sys/statvfs.h \- VFS File System information structure
+.SH SYNOPSIS
+.LP
+\fB#include <sys/statvfs.h> \fP
+.SH DESCRIPTION
+.LP
+The \fI<sys/statvfs.h>\fP header shall define the \fBstatvfs\fP structure
+that includes at least the following
+members:
+.sp
+.RS
+.nf
+
+\fBunsigned long f_bsize \fP File system block size. \fB
+unsigned long f_frsize \fP Fundamental file system block size. \fB
+fsblkcnt_t f_blocks \fP Total number of blocks on file system in units of \fIf_frsize.\fP \fB
+fsblkcnt_t f_bfree \fP Total number of free blocks. \fB
+fsblkcnt_t f_bavail \fP Number of free blocks available to \fB
+ \fP non-privileged process. \fB
+fsfilcnt_t f_files \fP Total number of file serial numbers. \fB
+fsfilcnt_t f_ffree \fP Total number of free file serial numbers. \fB
+fsfilcnt_t f_favail \fP Number of file serial numbers available to \fB
+ \fP non-privileged process. \fB
+unsigned long f_fsid \fP File system ID. \fB
+unsigned long f_flag \fP Bit mask of \fIf_flag\fP values. \fB
+unsigned long f_namemax \fP Maximum filename length. \fB
+\fP
+.fi
+.RE
+.LP
+The \fBfsblkcnt_t\fP and \fBfsfilcnt_t\fP types shall be defined as
+described in \fI<sys/types.h>\fP .
+.LP
+The following flags for the \fIf_flag\fP member shall be defined:
+.TP 7
+ST_RDONLY
+Read-only file system.
+.TP 7
+ST_NOSUID
+Does not support the semantics of the ST_ISUID and ST_ISGID file mode
+bits.
+.sp
+.LP
+The following shall be declared as functions and may also be defined
+as macros. Function prototypes shall be provided.
+.sp
+.RS
+.nf
+
+\fBint statvfs(const char *restrict, struct statvfs *restrict);
+int fstatvfs(int, struct statvfs *);
+\fP
+.fi
+.RE
+.LP
+\fIThe following sections are informative.\fP
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fI<sys/types.h>\fP , the System Interfaces volume of
+IEEE\ Std\ 1003.1-2001, \fIfstatvfs\fP(), \fIstatvfs\fP()
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .