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.
Note: File should be opened for writing
EIO_O_CREAT
should be logically OR'd withEIO_O_WRONLY
, orEIO_O_RDWR
Stream, Socket resource, or numeric file descriptor, e.g. returned by eio_open().
Currently only one flag is supported for mode: EIO_FALLOC_FL_KEEP_SIZE
(the same as POSIX constant FALLOC_FL_KEEP_SIZE
).
Specifies start of the byte range.
Specifies length the byte range.
The request priority: EIO_PRI_DEFAULT
, EIO_PRI_MIN
, EIO_PRI_MAX
, or NULL
. If NULL
passed, pri
internally is set to EIO_PRI_DEFAULT
.
callback
function is called when the request is done. It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]);
Arbitrary variable passed to callback
.
eio_fallocate() returns request resource on success or FALSE
on error.
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