From 107009a27770dc0c617bfe80442336d54aee445b Mon Sep 17 00:00:00 2001
From: Ralph Ronnquist <ralph.ronnquist@gmail.com>
Date: Wed, 30 Mar 2022 17:04:20 +1100
Subject: [PATCH] bug fix and using musl-gcc

---
 src/Makefile | 24 ++++++------------------
 src/reaper.c | 26 ++++++++++++++------------
 2 files changed, 20 insertions(+), 30 deletions(-)

diff --git a/src/Makefile b/src/Makefile
index 82cffb0..5c8c757 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,22 +1,10 @@
-all: reaper reaperc reapernsl
+all: reaper
 
-STRIP?=strip
+CC = musl-gcc
+CFLAGS = -Wall -static -O3 -flto
 
-reaper: reaper.asm
-	fasm $^ -s $@.fas $@
-	chmod a+x $@
-
-reaper.map: reaper
-	./fas2txt.lsp $@.fas > $@.map
-
-reaperc: reaper.c
-	$(CC) -O3 -flto -o $@ $^
-	$(STRIP) $@
-
-reapernsl: reaper_nsl.c
-	#$(CC) -O3 -flto -nostdlib -static -fdata-sections -ffunction-sections -o $@ $^ -Wl,--gc-sections -Wl,--strip-all -Wl,--build-id=none
-	$(CC) -O3 -flto -nostdlib -static -o $@ $^ -Wl,--build-id=none
-	$(STRIP) --remove-section=.comment $@
+reaper: reaper.c
+	$(CC) $(CFLAGS) -o $@ $^
 
 clean:
-	rm -f reaper reaperc reaper.fas reaper.map reapernsl
+	rm -f reaper
diff --git a/src/reaper.c b/src/reaper.c
index f1c2f9a..9da2124 100644
--- a/src/reaper.c
+++ b/src/reaper.c
@@ -1,19 +1,21 @@
-#include <errno.h>
+/**
+ * This program waits for child process and "reaps" them, i.e. read
+ * off their status so that they can terminate. The program exits when
+ * it runs out of children.
+ */
 #include <signal.h>
 #include <string.h>
-#include <unistd.h>
 #include <sys/wait.h>
-#include <sys/types.h>
 
 int main(void) {
-	sigset_t set;
-	siginfo_t status;
+    sigset_t set;
+    siginfo_t status;
 
-	if (getpid()!=1)
-		return 1;
-	sigfillset(&set);
-	sigprocmask(SIG_BLOCK,&set,NULL);
-	memset(&status,0,sizeof status);
-	while (-ECHILD!=waitid(P_ALL,0,&status,WEXITED));
-	return 1;
+    sigfillset(&set);
+    sigprocmask(SIG_BLOCK,&set,NULL);
+
+    do {
+	memset( &status, 0, sizeof( status ) );
+    } while ( waitid( P_ALL, 0, &status, WEXITED ) == 0 );
+    return 0;
 }
-- 
2.39.2