ustat(2)
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ustat System Call
Get file system device statistics.
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SYNTAX
#include <sys/types.h>
#include <sys/ustat.h>
int ustat (device, ustat_buffer)
dev_t device;
struct ustat * ustat_buffer;
PARAMETERS
device Device number of a mounted file system device.
ustat_buffer Where the file system statistics are returned.
DESCRIPTION
Ustat returns information about a mounted file system device.
<Device> is a device number identifying a device containing a
mounted file system. Status information concerning the file
system device contained on <device> is returned in the location
pointed to by <ustat_buffer>.
If an error occurs, the contents of <ustat_buffer> are undefined.
ACCESS CONTROL
None.
RETURN VALUE
0 The file system device status information was
successfully returned.
-1 An error occurred. Errno is set to indicate the
error.
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ustat(2)
EXCEPTIONS
Errno may be set to one of the following error codes:
EINVAL <Device> is not the device number of an active
file system device.
EFAULT Some part of the ustat structure pointed to by
<ustat_buffer> lies outside of the process's
writable address space.
EINTR Interrupted ustat call.
SEE ALSO
The related manual sections: fstat(2), stat(2),
fs(4),
ustat(5).
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