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main: add safety comments

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2022-11-16 23:23:07 +00:00 committed by Liu Wei
parent 145df4b689
commit d5f294b326
1 changed files with 3 additions and 0 deletions
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3
src/main.rs
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@ -453,6 +453,7 @@ fn start_vmm(cmd_arguments: ArgMatches) -> Result<Option<String>, Error> {
.convert("fd")
.map_err(Error::ParsingEventMonitor)?
.unwrap();
// SAFETY: fd is valid
unsafe { File::from_raw_fd(fd) }
} else if parser.is_set("path") {
std::fs::OpenOptions::new()
@ -592,6 +593,7 @@ fn start_vmm(cmd_arguments: ArgMatches) -> Result<Option<String>, Error> {
fn main() {
// Ensure all created files (.e.g sockets) are only accessible by this user
// SAFETY: trivially safe
let _ = unsafe { libc::umask(0o077) };
let (default_vcpus, default_memory, default_rng) = prepare_default_values();
@ -607,6 +609,7 @@ fn main() {
}
};
// SAFETY: trivially safe
let on_tty = unsafe { libc::isatty(libc::STDIN_FILENO) } != 0;
if on_tty {
// Don't forget to set the terminal in canonical mode