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cli: Act as a binfmt interpreter when invoked from a special path

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This commit is contained in:
Julius Michaelis
2021-07-31 19:13:06 +09:00
committed by Julius Michaelis
parent 638871988e
commit 08c885fa58
5 changed files with 82 additions and 18 deletions
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35
lib/cli/src/cli.rs
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@@ -97,21 +97,30 @@ pub fn wasmer_main() {
// Eg. `wasmer <SUBCOMMAND>`
// In case that fails, we fallback trying the Run subcommand directly.
// Eg. `wasmer myfile.wasm --dir=.`
//
// In case we've been run as wasmer-binfmt-interpreter myfile.wasm args,
// we assume that we're registered via binfmt_misc
let args = std::env::args().collect::<Vec<_>>();
let binpath = args.get(0).map(|s| s.as_ref()).unwrap_or("");
let command = args.get(1);
let options = match command.unwrap_or(&"".to_string()).as_ref() {
"cache" | "compile" | "config" | "create-exe" | "help" | "inspect" | "run"
| "self-update" | "validate" | "wast" => WasmerCLIOptions::from_args(),
_ => {
WasmerCLIOptions::from_iter_safe(args.iter()).unwrap_or_else(|e| {
match e.kind {
// This fixes a issue that:
// 1. Shows the version twice when doing `wasmer -V`
// 2. Shows the run help (instead of normal help) when doing `wasmer --help`
ErrorKind::VersionDisplayed | ErrorKind::HelpDisplayed => e.exit(),
_ => WasmerCLIOptions::Run(Run::from_args()),
}
})
let options = if cfg!(target_os = "linux") && binpath.ends_with("wasmer-binfmt-interpreter")
{
WasmerCLIOptions::Run(Run::from_binfmt_args())
} else {
match command.unwrap_or(&"".to_string()).as_ref() {
"cache" | "compile" | "config" | "create-exe" | "help" | "inspect" | "run"
| "self-update" | "validate" | "wast" => WasmerCLIOptions::from_args(),
_ => {
WasmerCLIOptions::from_iter_safe(args.iter()).unwrap_or_else(|e| {
match e.kind {
// This fixes a issue that:
// 1. Shows the version twice when doing `wasmer -V`
// 2. Shows the run help (instead of normal help) when doing `wasmer --help`
ErrorKind::VersionDisplayed | ErrorKind::HelpDisplayed => e.exit(),
_ => WasmerCLIOptions::Run(Run::from_args()),
}
})
}
}
};