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bunpen: fix mixup between argv0 and the rest of argv

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Colin
2024-08-25 19:10:26 +00:00
parent 64697a2cb8
commit 9f5d7f2bb2
1 changed files with 7 additions and 9 deletions
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16
pkgs/additional/bunpen/main.ha
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@@ -9,27 +9,25 @@ use os;
use os::exec;
use types::c;
fn do_exec(args: []str) (os::exec::error | void) = {
fn do_exec(name: str, args: []str) (os::exec::error | void) = {
{
let joined = strings::join(" ", args...);
defer free(joined);
log::printfln("exec: {}", joined);
};
// we receive the args as <argv0> <path> <args>,
// and want to invoke the program via `exec(path, argv0, args...)`.
// TODO: rework `opts.cmd` handling to make this more consistent.
let path = args[1];
static delete(args[1]);
let path = args[0];
args[0] = name;
rtext::check_error("exec", rtext::execve(path, args));
// XXX: os::exec::exec offers no way to preserve argv0, but the following
// works if you don't care about that:
// let cmd = os::exec::cmd(args[1], args[2..]...)?;
// let cmd = os::exec::cmd(args[0], args[1..]...)?;
// os::exec::exec(&cmd);
};
export fn main() void = {
let name = os::args[0];
let opts = config::parse_args(os::args[1..]);
if (opts.help) {
@@ -52,8 +50,8 @@ export fn main() void = {
restrict::namespace_restrict(&what);
restrict::landlock_restrict(&what);
if (opts.drop_shell) {
rtext::check_error("exec /bin/sh", do_exec(["sh", "/bin/sh"]));
rtext::check_error("exec /bin/sh", do_exec(name, ["/bin/sh"]));
} else {
rtext::check_error("exec <user command>", do_exec(opts.cmd));
rtext::check_error("exec <user command>", do_exec(name, opts.cmd));
};
};