From f85b073ee154a49bbd7ca0b6b2a68add4968700c Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Thu, 28 Jan 2021 21:13:22 +0300
Subject: [PATCH] Pipes can fail at OS level, do not panic

---
 js.go     | 6 +++---
 main.go   | 4 ++--
 status.go | 3 ++-
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/js.go b/js.go
index 2efdd16..701d26d 100644
--- a/js.go
+++ b/js.go
@@ -92,7 +92,7 @@ func jsInit() {
 
 	JSR, JSW, err = os.Pipe()
 	if err != nil {
-		panic(err)
+		log.Fatalln(err)
 	}
 	for i := uint64(0); i < jobs; i++ {
 		jsRelease("initial fill")
@@ -101,7 +101,7 @@ func jsInit() {
 
 func jsReleaseNoLock() {
 	if n, err := JSW.Write([]byte{0}); err != nil || n != 1 {
-		panic("can not write JSW")
+		log.Fatalln("can not write JSW:", err)
 	}
 }
 
@@ -124,7 +124,7 @@ func jsAcquire(ctx string) {
 	}
 	trace(CJS, "acquire for %s", ctx)
 	if n, err := JSR.Read([]byte{0}); err != nil || n != 1 {
-		panic("can not read JSR")
+		log.Fatalln("can not read JSR:", err)
 	}
 	jsTokensM.Lock()
 	jsTokens++
diff --git a/main.go b/main.go
index 734239b..2007215 100644
--- a/main.go
+++ b/main.go
@@ -96,7 +96,7 @@ func main() {
 	var err error
 	Cwd, err = os.Getwd()
 	if err != nil {
-		panic(err)
+		log.Fatalln(err)
 	}
 
 	NoColor = os.Getenv(EnvNoColor) != ""
@@ -178,7 +178,7 @@ func main() {
 	if BuildUUID == "" {
 		raw := new([16]byte)
 		if _, err = io.ReadFull(rand.Reader, raw[:]); err != nil {
-			panic(err)
+			log.Fatalln(err)
 		}
 		raw[6] = (raw[6] & 0x0F) | uint8(4<<4) // version 4
 		BuildUUID = fmt.Sprintf(
diff --git a/status.go b/status.go
index 139ceb7..e6c9b31 100644
--- a/status.go
+++ b/status.go
@@ -20,6 +20,7 @@ package main
 import (
 	"flag"
 	"fmt"
+	"log"
 	"os"
 )
 
@@ -57,7 +58,7 @@ func statusInit() {
 	var err error
 	r, FdStatus, err = os.Pipe()
 	if err != nil {
-		panic(err)
+		log.Fatalln(err)
 	}
 	go func() {
 		running := 0
-- 
2.44.0