ustat
Hurricane Electric Internet Services
NAME
ustat - get file system statistics
SYNOPSIS
#include <sys/types.h>
int ustat(dev_t dev, struct ustat * ubuf);
DESCRIPTION
ustat returns information about a mounted file system.
dev is a device number identifying a device containing a
mounted file system. ubuf is a pointer to a ustat struc-
ture that contains the following members:
daddr_t f_tfree; /* Total free blocks */
ino_t f_tinode; /* Number of free inodes */
char f_fname[6]; /* Filsys name */
char f_fpack[6]; /* Filsys pack name */
The last two fields, f_fname and f_fpack, are not imple-
mented and will always be filled with null characters.
RETURN VALUE
On success, zero is returned and the ustat structure
pointed to by ubuf will be filled in. On error, -1 is
returned, and errno is set appropriately.
ERRORS
EINVAL dev does not refer to a device containing a mounted
file system.
EFAULT ubuf points outside of your accessible address
space.
ENOSYS The mounted file system referenced by dev does not
support this operation, or any version of Linux
before 1.3.16.
NOTES
ustat has only been provided for compatibility. All new
programs should use statfs(2) instead.
HISTORY
ustat was first implemented in Linux 1.3.16. All versions
of Linux before 1.3.16 will return ENOSYS.
CONFORMING TO
System V
SEE ALSO
statfs(2), stat(2)
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Copyright (C) 1998
Hurricane Electric.
All Rights Reserved.