eio_fallocate
(PECL eio >= 0.0.1dev)
eio_fallocate — Allows the caller to directly manipulate the allocated disk space for a file
Beschreibung
mixed
$fd,int
$mode,int
$offset,int
$length,int
$pri = EIO_PRI_DEFAULT,callable
$callback = NULL,mixed
$data = NULL): resource
eio_fallocate() allows the caller to directly manipulate the allocated disk space for the
file specified by fd file descriptor for the byte
range starting at offset and continuing for
length bytes.
Hinweis: File should be opened for writing
EIO_O_CREATshould be logically OR'd withEIO_O_WRONLY, orEIO_O_RDWR
Parameter-Liste
-
fd -
Stream, Socket resource, or numeric file descriptor, e.g. returned by eio_open().
-
mode -
Currently only one flag is supported for mode:
EIO_FALLOC_FL_KEEP_SIZE(the same as POSIX constantFALLOC_FL_KEEP_SIZE). -
offset -
Specifies start of the byte range.
-
length -
Specifies length the byte range.
-
pri -
The request priority:
EIO_PRI_DEFAULT,EIO_PRI_MIN,EIO_PRI_MAX, ornull. Ifnullpassed,priinternally is set toEIO_PRI_DEFAULT. -
callback -
callbackfunction is called when the request is done. It should match the following prototype:void callback(mixed $data, int $result[, resource $req]);-
data -
is custom data passed to the request.
-
result -
request-specific result value; basically, the value returned by corresponding system call.
-
req -
is optional request resource which can be used with functions like eio_get_last_error()
-
-
data -
Arbitrary variable passed to
callback.
Rückgabewerte
eio_fallocate() returns request resource on success,Bei einem Fehler wird false zurückgegeben..
