USTAT(S) XENIX System V USTAT(S)
Name
ustat - Gets file system statistics.
Syntax
#include <sys/types.h>
#include <ustat.h>
int ustat (dev, buf)
dev_t dev;
struct ustat *buf;
Description
ustat returns information about a mounted file system. dev
is a device number identifying a device containing a mounted
file system. buf is a pointer to a ustat structure that
includes the following elements:
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 */
ustat will fail if one or more of the following are true:
dev is not the device number of a device containing a
mounted file system. [EINVAL]
buf points outside the process' allocated address
space. [EFAULT]
Return Value
Upon successful completion, a value of 0 is returned.
Otherwise, a value of -1 is returned and errno is set to
indicate the error.
See Also
stat(S), filesystem(F), fsname(M)
Notes
When using file systems from previous versions of XENIX,
fsck(C) must be run on the file system before mounting.
Otherwise the ustat system call will not work correctly.
This only needs to be done once.
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