statfs(5) DG/UX 5.4R3.00 statfs(5)
NAME
statfs - data returned by the statfs system call
DESCRIPTION
The system call statfs takes a parameter that is a pointer to the
structure defined by this include file. This structure returns file
system device statistics.
struct statfs
{
short ffstyp;
long fbsize;
long ffrsize;
long fblocks;
long fbfree;
long fbavail;
long ffiles;
long fffree;
char ffname [6];
char ffpack [6];
long ffavail;
long fsblocks;
long fsbfree;
long fsbavail;
long fsfiles;
long fsffree;
long fsfavail;
};
The fields of this structure are defined as follows:
ffstyp The type of the file system.
fbsize The file system block size, in bytes.
ffrsize The file system fragment size, in bytes.
fblocks The maximum number of blocks that may exist in the control-
point directory containing the pathname passed to statfs,
taking into account the block limits of all CPDs on the
path. If the pathname is a CPD, its own block limit is
also taken into account. If the pathname is the root of a
file system, this field is the maximum that applies to
superusers, so it is the same as fsblocks. If the
pathname is not a file system root, the maximum applies to
both superusers and non-superusers.
fbfree The number of free blocks in the control-point directory
containing the pathname passed to statfs, taking into
account the block limits of all CPDs on the path. If the
pathname is a CPD, its own block limit is also taken into
account. If the pathname is the root of a file system,
this field is the number of blocks that can still be
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statfs(5) DG/UX 5.4R3.00 statfs(5)
allocated by superusers, so it is the same as fsbfree. If
the pathname is not a file system root, the free count
applies to both superusers and non-superusers.
fbavail This field is the same as fbfree unless the pathname is
the root of a file system. In that case it gives the
number of blocks that can still be allocated by non-
superusers.
ffiles The total number of files that may exist in the control-
point directory containing the pathname passed to statfs,
i.e. the number allocated plus the number that still may
be created, taking into account the file limits of all CPDs
on the path. If the pathname is a CPD, its own file limit
is also taken into account. If the pathname is the root of
a file system, this field is the maximum that applies to
superusers, so it is the same as fsfiles. If the pathname
is not a file system root, the maximum applies to both
superusers and non-superusers.
fffree The number of files that still may be created in the
control-point directory containing the pathname passed to
statfs, taking into account the files limits of all CPDs on
the path. If the pathname is a CPD, its own file limit is
also taken into account. If the pathname is the root of a
file system, this field is the number of files that can
still be created by superusers, so it is the same as
fsffree. If the pathname is not a file system root, the
file count applies to both superusers and non-superusers.
ffname The file system name. This field will be null unless a
label has been added to the file system with labelit.
ffpack The file system pack name. This field will be null unless
a label has been added to the file system with labelit.
ffavail This field is the same as fffree.
fsblocks The file system size, in blocks.
fsbfree The total number of free blocks on the file system.
fsbavail The number of free blocks on the file system available to
non-superusers.
fsfiles The total number of files that may exist on the file
system, i.e. the number allocated plus the number that
still may be created.
fsffree The number of files that still may be created on the file
system.
fsfavail The number of files that still may be created on the file
system by non-superusers.
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statfs(5) DG/UX 5.4R3.00 statfs(5)
FILES
/usr/include/sys/statfs.h
SEE ALSO
statfs(2).
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