sys_statvfs.h(0p) — Linux manual page


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.1‐2017, fstatvfs(3p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic
       form from IEEE Std 1003.1-2017, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The
       Open Group Base Specifications Issue 7, 2018 Edition, Copyright
       (C) 2018 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 .

       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               2017                 sys_statvfs.h(0P)

Pages that refer to this page: sys_stat.h(0p)fstatvfs(3p)