fuchsia.io/File.ReadAt — fuchsia

`fuchsia.io/File.ReadAt`

METHOD fuchsia.io sdk/fidl/fuchsia.io/file.fidl:122

Reads up to 'count' bytes at the provided offset. Does not affect the seek offset. ## Invariants * The returned `data.length` will never be greater than `count`. * If `data.length` is less than `count`, it means that `ReadAt` has hit the end of file as part of this operation. * If `data.length` is zero while `count` is not, it means that `offset` is at or past the end of file, and no data can be read. * If `count` is zero, the server should perform all the checks ensuring read access without actually reading anything, and return an empty `data` vector. This method requires the [`Rights.READ_BYTES`] right. Returns `ZX_ERR_OUT_OF_RANGE` if `count` is greater than `MAX_TRANSFER_SIZE`.

Relationships

ACCEPTS_TYPE → fuchsia.io/count
method param
ACCEPTS_TYPE → fuchsia.io/offset
method param
RETURNS_TYPE → fuchsia.io/data
method result
RETURNS_TYPE → fuchsia.io/Transfer
method result

Documentation (1)

SUBSTANTIVE sdk/fidl/fuchsia.io/file.fidl:122 ↗ 115 words
docs.reference.fidldoc · adapter: fidl

Tests (0)

No test references.

Examples (0)

No example references.

Gaps

Missing categories:

examples
tests

Findings (2)

WARNING DOCUMENTED_UNTESTED element is documented but has no test references
analyzer: documented-untested
WARNING MISSING_IN_CATEGORY no references in category "tests.unit_tests"
analyzer: missing-in-category

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