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agent: fix the issue of creating the dns file

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We should make sure the dns's source file's parent
directory exist, otherwise, it would failed to create
the file directly.

Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
This commit is contained in:
Fupan Li 2023-02-16 11:23:11 +08:00
parent 139ad8e95f
commit 32ebe1895b
1 changed files with 7 additions and 0 deletions
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7
src/agent/src/network.rs
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@ -7,6 +7,7 @@ use anyhow::{anyhow, Result};
use nix::mount::{self, MsFlags}; use nix::mount::{self, MsFlags};
use slog::Logger; use slog::Logger;
use std::fs; use std::fs;
use std::path;
const KATA_GUEST_SANDBOX_DNS_FILE: &str = "/run/kata-containers/sandbox/resolv.conf"; const KATA_GUEST_SANDBOX_DNS_FILE: &str = "/run/kata-containers/sandbox/resolv.conf";
const GUEST_DNS_FILE: &str = "/etc/resolv.conf"; const GUEST_DNS_FILE: &str = "/etc/resolv.conf";
@ -64,6 +65,12 @@ fn do_setup_guest_dns(logger: Logger, dns_list: Vec<String>, src: &str, dst: &st
.map(|x| x.trim()) .map(|x| x.trim())
.collect::<Vec<&str>>() .collect::<Vec<&str>>()
.join("\n"); .join("\n");
// make sure the src file's parent path exist.
let file_path = path::Path::new(src);
if let Some(p) = file_path.parent() {
fs::create_dir_all(p)?;
}
fs::write(src, content)?; fs::write(src, content)?;
// bind mount to /etc/resolv.conf // bind mount to /etc/resolv.conf