INDEX

NAME, SYNOPSIS, DESCRIPTION, APPLICATION USAGE, RATIONALE, FUTURE DIRECTIONS, SEE ALSO, COPYRIGHT

"<sys/statvfs.h>" 0P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"

NAME

sys/statvfs.h - VFS File System information structure

SYNOPSIS

#include <sys/statvfs.h> fP


DESCRIPTION

The <sys/statvfs.h> header shall define the statvfs structure that includes at least the following members:

unsigned 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 f_frsize. 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 f_flag values. fB
unsigned long f_namemax fP Maximum filename length. fB
fP

The fsblkcnt_t and fsfilcnt_t types shall be defined as described in <sys/types.h> . The following flags for the f_flag member shall be defined:

ST_RDONLY

Read-only file system.

ST_NOSUID

Does not support the semantics of the ST_ISUID and ST_ISGID file mode bits. The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.

int statvfs(const char *restrict, struct statvfs *restrict);

int fstatvfs(int, struct statvfs *);
fP

The following sections are informative.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

<sys/types.h>, the System Interfaces volume of IEEE Std 1003.1-2001, fstatvfs(), statvfs()

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 .

Possibly related

raw nroff source of sys_statvfs.h(0p)