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net_util: Extend Tap::open_named() to take flags

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This allows us to open the named TAP device without O_CLOEXEC for an
integration test.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2020-12-16 16:44:38 +00:00
committed by Samuel Ortiz
parent 21dcac7721
commit 16c2eebfd1
2 changed files with 5 additions and 5 deletions
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6
net_util/src/tap.rs
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@@ -83,7 +83,7 @@ fn build_terminated_if_name(if_name: &str) -> Result<Vec<u8>> {
}
impl Tap {
pub fn open_named(if_name: &str, num_queue_pairs: usize) -> Result<Tap> {
pub fn open_named(if_name: &str, num_queue_pairs: usize, flags: Option<i32>) -> Result<Tap> {
let terminated_if_name = build_terminated_if_name(if_name)?;
let fd = unsafe {
@@ -91,7 +91,7 @@ impl Tap {
// string and verify the result.
libc::open(
b"/dev/net/tun\0".as_ptr() as *const c_char,
libc::O_RDWR | libc::O_NONBLOCK | libc::O_CLOEXEC,
flags.unwrap_or(libc::O_RDWR | libc::O_NONBLOCK | libc::O_CLOEXEC),
)
};
if fd < 0 {
@@ -150,7 +150,7 @@ impl Tap {
/// Create a new tap interface.
pub fn new(num_queue_pairs: usize) -> Result<Tap> {
Self::open_named("vmtap%d", num_queue_pairs)
Self::open_named("vmtap%d", num_queue_pairs, None)
}
/// Set the host-side IP address for the tap interface.