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unix::init: Handle ENOSYS from poll on Unikraft.

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Signed-off-by: Martin Kröning <martin.kroening@eonerc.rwth-aachen.de>
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Martin Kröning 2023-07-05 12:49:35 +02:00 committed by Martin Kröning
parent 2b8a284d78
commit 7485e9c965
Failed to extract signature
1 changed files with 5 additions and 0 deletions
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5
library/std/src/sys/unix/mod.rs
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@ -110,6 +110,11 @@ pub unsafe fn init(argc: isize, argv: *const *const u8, sigpipe: u8) {
while libc::poll(pfds.as_mut_ptr(), 3, 0) == -1 {
match errno() {
libc::EINTR => continue,
#[cfg(target_vendor = "unikraft")]
libc::ENOSYS => {
// Not all configurations of Unikraft enable `LIBPOSIX_EVENT`.
break 'poll;
}
libc::EINVAL | libc::EAGAIN | libc::ENOMEM => {
// RLIMIT_NOFILE or temporary allocation failures
// may be preventing use of poll(), fall back to fcntl