Andrej Mihajlov
37 lines
1.2 KiB
Rust
37 lines
1.2 KiB
Rust
// Copyright 2025 - Nym Technologies SA <contact@nymtech.net>
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// SPDX-License-Identifier: Apache-2.0
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use std::{io, path::Path};
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static PROC_SELF_FD_DIR: &str = "/proc/self/fd/";
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/// Check if there are no open file descriptors for the given files.
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///
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/// Linux, Android: uses `/proc/self/fd/` to list open file descriptors
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/// See: https://stackoverflow.com/a/59797198/351305
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pub async fn check_files_closed(file_paths: &[&Path]) -> io::Result<bool> {
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let mut dir = tokio::fs::read_dir(PROC_SELF_FD_DIR).await?;
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while let Ok(Some(entry)) = dir.next_entry().await {
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if entry
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.file_type()
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.await
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.inspect_err(|e| tracing::warn!("entry.file_type() failure: {e}"))
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.is_ok_and(|entry_type| entry_type.is_symlink())
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{
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match tokio::fs::read_link(entry.path()).await {
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Ok(resolved_path) => {
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if file_paths.contains(&resolved_path.as_ref()) {
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return Ok(false);
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}
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}
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Err(e) => {
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tracing::error!("Failed to read symlink: {e}");
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}
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}
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}
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}
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Ok(true)
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}
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