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[illumos/solaris] set MSG_NOSIGNAL while writing to sockets

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Both these platforms have MSG_NOSIGNAL available, and we should set it for
socket writes in the event that the SIGPIPE handler has been reset to SIG_DFL
(i.e. terminate the process).

I've verified via a quick program at
https://github.com/sunshowers/msg-nosignal-test/ that even when the SIGPIPE
handler is reset to SIG_DFL, writes to closed sockets now error out with EPIPE.
(Under ordinary circumstances UDP writes won't cause MSG_NOSIGNAL.)
This commit is contained in:
Rain 2024-07-27 02:06:58 +00:00 committed by Rain
parent 2d5a628a1d
commit 50d127e6ec
2 changed files with 5 additions and 0 deletions
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4
library/std/src/os/unix/net/datagram.rs
View File

@ -20,6 +20,8 @@ use crate::{fmt, io};
target_os = "freebsd",
target_os = "openbsd",
target_os = "netbsd",
target_os = "solaris",
target_os = "illumos",
target_os = "haiku",
target_os = "nto",
))]
@ -31,6 +33,8 @@ use libc::MSG_NOSIGNAL;
target_os = "freebsd",
target_os = "openbsd",
target_os = "netbsd",
target_os = "solaris",
target_os = "illumos",
target_os = "haiku",
target_os = "nto",
)))]

1
library/std/src/sys_common/net.rs
View File

@ -42,6 +42,7 @@ cfg_if::cfg_if! {
target_os = "hurd",
target_os = "dragonfly", target_os = "freebsd",
target_os = "openbsd", target_os = "netbsd",
target_os = "solaris", target_os = "illumos",
target_os = "haiku", target_os = "nto"))] {
use libc::MSG_NOSIGNAL;
} else {