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Noux: no read/write on open directories

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Directories may be opened, but they cannot be read from or written to.

Ref #2533
This commit is contained in:
Emery Hemingway 2018-02-13 16:23:54 +01:00 committed by Norman Feske
parent e05a708024
commit 2b006dbaac
1 changed files with 12 additions and 0 deletions
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12
repos/ports/src/noux/vfs_io_channel.h
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@ -67,6 +67,8 @@ struct Noux::Vfs_io_channel : Io_channel
Absolute_path _path;
Absolute_path _leaf_path;
bool const _dir = _fh->ds().directory(_leaf_path.base());
Vfs_io_channel(char const *path, char const *leaf_path,
Vfs::Dir_file_system *root_dir, Vfs::Vfs_handle *vfs_handle,
Vfs_io_waiter_registry &vfs_io_waiter_registry,
@ -95,6 +97,11 @@ struct Noux::Vfs_io_channel : Io_channel
bool write(Sysio &sysio) override
{
if (_dir) {
sysio.error.write = Vfs::File_io_service::WRITE_ERR_INVALID;
return false;
}
Vfs::file_size count = sysio.write_in.count;
Vfs::file_size out_count = 0;
@ -123,6 +130,11 @@ struct Noux::Vfs_io_channel : Io_channel
bool read(Sysio &sysio) override
{
if (_dir) {
sysio.error.read = Vfs::File_io_service::READ_ERR_INVALID;
return false;
}
size_t count = min(sysio.read_in.count, sizeof(sysio.read_out.chunk));
Vfs::file_size out_count = 0;