37 lines
1.1 KiB
Rust
37 lines
1.1 KiB
Rust
// SPDX-License-Identifier: MPL-2.0
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use super::SyscallReturn;
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use crate::{
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prelude::*,
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process::{
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signal::{
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sig_num::SigNum,
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signals::user::{UserSignal, UserSignalKind},
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},
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tgkill, Pid,
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},
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thread::Tid,
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};
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/// Sends a signal to a thread with `tid` as its thread ID, and `tgid` as its thread group ID.
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pub fn sys_tgkill(tgid: Pid, tid: Tid, sig_num: u8, ctx: &Context) -> Result<SyscallReturn> {
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let sig_num = if sig_num == 0 {
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None
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} else {
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Some(SigNum::try_from(sig_num)?)
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};
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debug!("tgid = {}, pid = {}, sig_num = {:?}", tgid, tid, sig_num);
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if tgid.cast_signed() < 0 || tid.cast_signed() < 0 {
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return_errno_with_message!(Errno::EINVAL, "negative TGIDs or TIDs are not valid");
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}
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let signal = sig_num.map(|sig_num| {
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let pid = ctx.process.pid();
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let uid = ctx.posix_thread.credentials().ruid();
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UserSignal::new(sig_num, UserSignalKind::Tkill, pid, uid)
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});
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tgkill(tid, tgid, signal, ctx)?;
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Ok(SyscallReturn::Return(0))
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}
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