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vhost_user_block: add --version

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2023-01-13 00:56:20 +00:00 committed by Rob Bradford
parent a0922930b1
commit b0a2ce0598
2 changed files with 17 additions and 2 deletions
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1
vhost_user_block/Cargo.toml
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@ -3,6 +3,7 @@ name = "vhost_user_block"
version = "0.1.0"
authors = ["The Cloud Hypervisor Authors"]
edition = "2021"
build = "../build.rs"
[dependencies]
argh = "0.1.9"

18
vhost_user_block/src/main.rs
View File

@ -19,7 +19,11 @@ struct TopLevel {
#[argh(option, long = "block-backend")]
/// vhost-user-block backend parameters
/// path=<image_path>,socket=<socket_path>,num_queues=<number_of_queues>,queue_size=<size_of_each_queue>,readonly=true|false,direct=true|false,poll_queue=true|false
backend_command: String,
backend_command: Option<String>,
#[argh(switch, short = 'V', long = "version")]
/// print version information
version: bool,
}
fn main() {
@ -27,5 +31,15 @@ fn main() {
let toplevel: TopLevel = argh::from_env();
start_block_backend(&toplevel.backend_command);
if toplevel.version {
println!("{} {}", env!("CARGO_BIN_NAME"), env!("BUILT_VERSION"));
return;
}
if toplevel.backend_command.is_none() {
println!("Please specify --block-backend");
std::process::exit(1)
}
start_block_backend(&toplevel.backend_command.unwrap());
}