eio_fallocate

(PECL eio >= 0.0.1dev)

eio_fallocate — Allows the caller to directly manipulate the allocated disk space for a file

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eio_fallocate ( 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.

Note: File should be opened for writing

EIO_O_CREAT should be logically OR'd with EIO_O_WRONLY, or EIO_O_RDWR

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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 constant FALLOC_FL_KEEP_SIZE).

offset

Specifies start of the byte range.

length

Specifies length the byte range.

pri

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callback

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void callback(mixed $data, int $result[, resource $req]);
data

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result

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req

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data

Arbitrary variable passed to callback.

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eio_fallocate() returns request resource on success or FALSE on error.