sys_statvfs.h(0P)         POSIX Programmer's Manual        sys_statvfs.h(0P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       sys/statvfs.h — VFS File System information structure

SYNOPSIS         top

       #include <sys/statvfs.h>

DESCRIPTION         top

       The <sys/statvfs.h> header shall define the statvfs structure, which
       shall include at least the following members:

           unsigned long f_bsize    File system block size.
           unsigned long f_frsize   Fundamental file system block size.
           fsblkcnt_t    f_blocks   Total number of blocks on file system in units of f_frsize.
           fsblkcnt_t    f_bfree    Total number of free blocks.
           fsblkcnt_t    f_bavail   Number of free blocks available to
                                    non-privileged process.
           fsfilcnt_t    f_files    Total number of file serial numbers.
           fsfilcnt_t    f_ffree    Total number of free file serial numbers.
           fsfilcnt_t    f_favail   Number of file serial numbers available to
                                    non-privileged process.
           unsigned long f_fsid     File system ID.
           unsigned long f_flag     Bit mask of f_flag values.
           unsigned long f_namemax  Maximum filename length.

       The <sys/statvfs.h> header shall define the fsblkcnt_t and fsfilcnt_t
       types as described in <sys/types.h>.

       The <sys/statvfs.h> header shall define the following symbolic
       constants for the f_flag member:

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

       The following sections are informative.



RATIONALE         top




SEE ALSO         top


       The System Interfaces volume of POSIX.1‐2008, fstatvfs(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) 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 .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see .

IEEE/The Open Group                 2013                   sys_statvfs.h(0P)

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