D28240.id82677.diff
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D28240.id82677.diff
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	diff --git a/bin/pwait/pwait.1 b/bin/pwait/pwait.1
	--- a/bin/pwait/pwait.1
	+++ b/bin/pwait/pwait.1
	@@ -32,7 +32,7 @@
	.\"
	.\" $FreeBSD$
	.\"
	-.Dd October 5, 2020
	+.Dd January 21, 2021
	.Dt PWAIT 1
	.Os
	.Sh NAME
	@@ -145,6 +145,10 @@
	.Xr wait 1
	builtin
	as it will not clean up any zombies or state in the parent process.
	+.Pp
	+To avoid deadlock,
	+.Nm
	+will ignore its own pid, if it is provided as a process id to wait for.
	.Sh HISTORY
	A
	.Nm
	diff --git a/bin/pwait/pwait.c b/bin/pwait/pwait.c
	--- a/bin/pwait/pwait.c
	+++ b/bin/pwait/pwait.c
	@@ -146,6 +146,10 @@
	warnx("%s: bad process id", s);
	continue;
	}
	+ if (pid == getpid()) {
	+ warnx("%s: skiping my own pid", s);
	+ continue;
	+ }
	for (i = 0; i < nleft; i++) {
	if (e[i].ident == (uintptr_t)pid) {
	break;