class VmoFile
Defined at line 32 of file ../../src/storage/lib/vfs/cpp/vmo_file.h
A file node backed by a range of bytes in a VMO.
The file has a fixed size specified at creating time; it does not grow or shrink even when
written into.
This class is thread-safe.
Public Methods
fuchsia_io::NodeProtocolKinds GetProtocols ()|Vnode| implementation:
Defined at line 37 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
bool ValidateRights (fuchsia_io::Rights rights)Defined at line 41 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
zx::result<fs::VnodeAttributes> GetAttributes ()Defined at line 54 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
zx_status_t Read (void * data, size_t length, size_t offset, size_t * out_actual)Defined at line 61 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
const zx::vmo & vmo ()The underlying VMO handle.
Defined at line 70 of file ../../src/storage/lib/vfs/cpp/vmo_file.h
size_t length ()The length of the file in bytes.
Defined at line 73 of file ../../src/storage/lib/vfs/cpp/vmo_file.h
bool is_writable ()True if the file is writable.
If false, attempts to open the file for write will fail.
Defined at line 77 of file ../../src/storage/lib/vfs/cpp/vmo_file.h
zx_status_t Write (const void * data, size_t length, size_t offset, size_t * out_actual)Defined at line 77 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
zx_status_t GetVmo (fuchsia_io::wire::VmoFlags flags, zx::vmo * out_vmo)Defined at line 95 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
Protected Methods
void VmoFile (zx::vmo vmo, size_t length, bool writable, DefaultSharingMode vmo_sharing)Creates a file node backed by a VMO.
Defined at line 30 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
void ~VmoFile ()Defined at line 35 of file ../../src/storage/lib/vfs/cpp/vmo_file.cc
Enumerations
enum DefaultSharingMode| Name | Value |
|---|---|
| kNone | 0 |
| kDuplicate | 1 |
| kCloneCow | 2 |
Specifies the default behavior when a client asks for the file's underlying VMO, but does not
specify if a duplicate handle or copy-on-write clone is required.
*NOTE*: This does not affect the behavior of requests that specify the required sharing mode,
those requests will still be fulfilled.
Defined at line 41 of file ../../src/storage/lib/vfs/cpp/vmo_file.h
Friends
class RefPtrclass MakeRefCountedHelper