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agent: re-enable the standard SIGPIPE behavior

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The Rust standard library had suppressed the default SIGPIPE
behavior, see https://github.com/rust-lang/rust/pull/13158.
Since the parent's signal handler would be inherited by it's child
process, thus we should re-enable the standard SIGPIPE behavior as a
workaround.

Fixes: #1887

Signed-off-by: fupan.lfp <fupan.lfp@antgroup.com>
This commit is contained in:
fupan.lfp 2021-05-28 15:06:39 +08:00
parent 35f297ad50
commit 0ae364c8eb
1 changed files with 12 additions and 0 deletions
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12
src/agent/src/main.rs
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@ -248,6 +248,7 @@ fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
} }
if args.len() == 2 && args[1] == "init" { if args.len() == 2 && args[1] == "init" {
reset_sigpipe();
rustjail::container::init_child(); rustjail::container::init_child();
exit(0); exit(0);
} }
@ -358,5 +359,16 @@ fn sethostname(hostname: &OsStr) -> Result<()> {
} }
} }
// The Rust standard library had suppressed the default SIGPIPE behavior,
// see https://github.com/rust-lang/rust/pull/13158.
// Since the parent's signal handler would be inherited by it's child process,
// thus we should re-enable the standard SIGPIPE behavior as a workaround to
// fix the issue of https://github.com/kata-containers/kata-containers/issues/1887.
fn reset_sigpipe() {
unsafe {
libc::signal(libc::SIGPIPE, libc::SIG_DFL);
}
}
use crate::config::AgentConfig; use crate::config::AgentConfig;
use std::os::unix::io::{FromRawFd, RawFd}; use std::os::unix::io::{FromRawFd, RawFd};