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roc run from a tempdir on macOS

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Richard Feldman 2022-05-24 09:31:54 -04:00
parent 182a87eb95
commit 769feba006
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1 changed files with 14 additions and 6 deletions
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20
cli/src/lib.rs
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@ -17,6 +17,8 @@ use target_lexicon::BinaryFormat;
use target_lexicon::{ use target_lexicon::{
Architecture, Environment, OperatingSystem, Triple, Vendor, X86_32Architecture, Architecture, Environment, OperatingSystem, Triple, Vendor, X86_32Architecture,
}; };
#[cfg(not(target_os = "linux"))]
use tempfile::TempDir;
pub mod build; pub mod build;
mod format; mod format;
@ -616,7 +618,7 @@ fn roc_run_unix<I: IntoIterator<Item = S>, S: AsRef<OsStr>>(
} }
} }
#[cfg(not(target_os = "linux"))] #[cfg(not(target_os = "linux"))]
ExecutableFile::OnDisk(_) => { ExecutableFile::OnDisk(_, _) => {
if libc::execve(path_cstring.as_ptr().cast(), argv.as_ptr(), envp.as_ptr()) != 0 { if libc::execve(path_cstring.as_ptr().cast(), argv.as_ptr(), envp.as_ptr()) != 0 {
internal_error!( internal_error!(
"libc::execve({:?}, ..., ...) failed: {:?}", "libc::execve({:?}, ..., ...) failed: {:?}",
@ -631,12 +633,12 @@ fn roc_run_unix<I: IntoIterator<Item = S>, S: AsRef<OsStr>>(
Ok(1) Ok(1)
} }
#[derive(Debug, Clone)] #[derive(Debug)]
enum ExecutableFile { enum ExecutableFile {
#[cfg(target_os = "linux")] #[cfg(target_os = "linux")]
MemFd(libc::c_int, PathBuf), MemFd(libc::c_int, PathBuf),
#[cfg(not(target_os = "linux"))] #[cfg(not(target_os = "linux"))]
OnDisk(PathBuf), OnDisk(TempDir, PathBuf),
} }
impl ExecutableFile { impl ExecutableFile {
@ -645,7 +647,7 @@ impl ExecutableFile {
#[cfg(target_os = "linux")] #[cfg(target_os = "linux")]
ExecutableFile::MemFd(_, path_buf) => path_buf.as_ref(), ExecutableFile::MemFd(_, path_buf) => path_buf.as_ref(),
#[cfg(not(target_os = "linux"))] #[cfg(not(target_os = "linux"))]
ExecutableFile::OnDisk(path_buf) => path_buf.as_ref(), ExecutableFile::OnDisk(_, path_buf) => path_buf.as_ref(),
} }
} }
} }
@ -684,9 +686,11 @@ fn roc_run_executable_file_path(
use std::io::Write; use std::io::Write;
use std::os::unix::fs::OpenOptionsExt; use std::os::unix::fs::OpenOptionsExt;
let temp_dir = tempfile::tempdir()?;
// We have not found a way to use a virtual file on non-Linux OSes. // We have not found a way to use a virtual file on non-Linux OSes.
// Hence we fall back to just writing the file to the file system, and using that file. // Hence we fall back to just writing the file to the file system, and using that file.
let app_path_buf = cwd.join("roc_app_binary"); let app_path_buf = temp_dir.path().join("roc_app_binary");
let mut file = OpenOptions::new() let mut file = OpenOptions::new()
.create(true) .create(true)
.write(true) .write(true)
@ -695,7 +699,11 @@ fn roc_run_executable_file_path(
file.write_all(binary_bytes)?; file.write_all(binary_bytes)?;
Ok(ExecutableFile::OnDisk(app_path_buf)) // We store the TempDir in this variant alongside the path to the executable,
// so that the TempDir doesn't get dropped until after we're done with the path.
// If we didn't do that, then the tempdir would potentially get deleted by the
// TempDir's Drop impl before the file had been executed.
Ok(ExecutableFile::OnDisk(temp_dir, app_path_buf))
} }
fn roc_run_non_unix<I: IntoIterator<Item = S>, S: AsRef<OsStr>>( fn roc_run_non_unix<I: IntoIterator<Item = S>, S: AsRef<OsStr>>(