1 files changed, 26 insertions, 1 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/process/syscalls.rs b/vendor/rustix/src/backend/linux_raw/process/syscalls.rs
index c0416bf5a..931f2ff2a 100644
--- a/vendor/rustix/src/backend/linux_raw/process/syscalls.rs
+++ b/vendor/rustix/src/backend/linux_raw/process/syscalls.rs
@@ -141,7 +141,7 @@ pub(crate) fn getpgrp() -> Pid {
 #[inline]
 pub(crate) fn sched_getaffinity(pid: Option<Pid>, cpuset: &mut RawCpuSet) -> io::Result<()> {
     unsafe {
-        // The raw linux syscall returns the size (in bytes) of the `cpumask_t`
+        // The raw Linux syscall returns the size (in bytes) of the `cpumask_t`
         // data type that is used internally by the kernel to represent the CPU
         // set bit mask.
         let size = ret_usize(syscall!(
@@ -436,6 +436,11 @@ pub(crate) fn waitpid(
 }
 
 #[inline]
+pub(crate) fn waitpgid(pgid: Pid, waitopts: WaitOptions) -> io::Result<Option<(Pid, WaitStatus)>> {
+    _waitpid(-pgid.as_raw_nonzero().get(), waitopts)
+}
+
+#[inline]
 pub(crate) fn _waitpid(
     pid: RawPid,
     waitopts: WaitOptions,
@@ -459,6 +464,7 @@ pub(crate) fn waitid(id: WaitId<'_>, options: WaitidOptions) -> io::Result<Optio
     match id {
         WaitId::All => _waitid_all(options),
         WaitId::Pid(pid) => _waitid_pid(pid, options),
+        WaitId::Pgid(pid) => _waitid_pgid(pid, options),
         WaitId::PidFd(fd) => _waitid_pidfd(fd, options),
     }
 }
@@ -502,6 +508,25 @@ fn _waitid_pid(pid: Pid, options: WaitidOptions) -> io::Result<Option<WaitidStat
 }
 
 #[inline]
+fn _waitid_pgid(pgid: Option<Pid>, options: WaitidOptions) -> io::Result<Option<WaitidStatus>> {
+    // `waitid` can return successfully without initializing the struct (no
+    // children found when using `WNOHANG`)
+    let mut status = MaybeUninit::<c::siginfo_t>::zeroed();
+    unsafe {
+        ret(syscall!(
+            __NR_waitid,
+            c_uint(c::P_PGID),
+            c_int(Pid::as_raw(pgid)),
+            by_mut(&mut status),
+            c_int(options.bits() as _),
+            zero()
+        ))?
+    };
+
+    Ok(unsafe { cvt_waitid_status(status) })
+}
+
+#[inline]
 fn _waitid_pidfd(fd: BorrowedFd<'_>, options: WaitidOptions) -> io::Result<Option<WaitidStatus>> {
     // `waitid` can return successfully without initializing the struct (no
     // children found when using `WNOHANG`)