From 621bd5704dfeeccf51097ba255010bd37054972c Mon Sep 17 00:00:00 2001
From: =?utf8?q?Rafa=C5=82=20D=C5=82ugo=C5=82=C4=99cki?=
 <rafal@dlugolecki.net.pl>
Date: Sat, 21 Jun 2014 07:51:01 +0200
Subject: [PATCH] Replace SIGINT with SIGTSTP.

---
 src/process1.c | 11 ++++-------
 src/process2.c | 11 ++++-------
 src/process3.c | 15 ++++++---------
 3 files changed, 14 insertions(+), 23 deletions(-)

diff --git a/src/process1.c b/src/process1.c
index fbee7c9..aa27e8c 100644
--- a/src/process1.c
+++ b/src/process1.c
@@ -25,11 +25,10 @@ int file_descriptor;
  */
 void sig_handler(int signo)
 {
+	fprintf(stderr, "[%s] Received %s!\n", "process1", strsignal(signo));
 	if (signo == SIGUSR1) {
-		fprintf(stderr, "[%s] Received SIGUSR1!\n", "process1");
 	}
 	else if (signo == SIGTERM) {
-		fprintf(stderr, "[%s] Received SIGTERM!\n", "process1");
 		fprintf(stderr, "[%s] > Releasing resources\n", "process1");
 		close(write_pipe);
 		unlink(write_pipe);
@@ -40,13 +39,11 @@ void sig_handler(int signo)
 		}
 		exit(0);
 	}
-	else if (signo == SIGINT) {
-		fprintf(stderr, "[%s] Received SIGINT!\n", "process1");
+	else if (signo == SIGTSTP) {
 		fprintf(stderr, "[%s] > Closing pipe\n", "process1");
 		close(write_pipe);
 	}
 	else if (signo == SIGCONT) {
-		fprintf(stderr, "[%s] Received SIGCONT!\n", "process1");
 		fprintf(stderr, "[%s] > Opening pipe\n", "process1");
 		file_descriptor = open(write_pipe, O_WRONLY);
 	}
@@ -83,8 +80,8 @@ int main(void) {
 	if (signal(SIGTERM, sig_handler) == SIG_ERR) {
 		fprintf(stderr, "can't catch SIGTERM\n");
 	}
-	if (signal(SIGINT, sig_handler) == SIG_ERR) {
-		fprintf(stderr, "can't catch SIGINT\n");
+	if (signal(SIGTSTP, sig_handler) == SIG_ERR) {
+		fprintf(stderr, "can't catch SIGTSTP\n");
 	}
 	if (signal(SIGCONT, sig_handler) == SIG_ERR) {
 		fprintf(stderr, "can't catch SIGCONT\n");
diff --git a/src/process2.c b/src/process2.c
index 75dacfd..87871e7 100644
--- a/src/process2.c
+++ b/src/process2.c
@@ -28,25 +28,22 @@ int write_descriptor;
  */
 void sig_handler(int signo)
 {
+	fprintf(stderr, "[%s] Received %s!\n", "process2", strsignal(signo));
 	if (signo == SIGUSR1) {
-		fprintf(stderr, "[%s] Received SIGUSR1!\n", "process2");
 	}
 	else if (signo == SIGTERM) {
-		fprintf(stderr, "[%s] Received SIGTERM!\n", "process2");
 		fprintf(stderr, "[%s] > Releasing resources\n", "process2");
 		close(read_descriptor);
 		close(write_descriptor);
 		unlink(write_descriptor);
 		exit(0);
 	}
-	else if (signo == SIGINT) {
-		fprintf(stderr, "[%s] Received SIGINT!\n", "process2");
+	else if (signo == SIGTSTP) {
 		fprintf(stderr, "[%s] > Closing pipes\n", "process2");
 		close(read_descriptor);
 		close(write_descriptor);
 	}
 	else if (signo == SIGCONT) {
-		fprintf(stderr, "[%s] Received SIGCONT!\n", "process2");
 		fprintf(stderr, "[%s] > Opening pipes\n", "process2");
 		read_descriptor = open(read_pipe, O_RDONLY);
 		write_descriptor = open(write_pipe, O_WRONLY);
@@ -85,8 +82,8 @@ int main(void) {
 	if (signal(SIGTERM, sig_handler) == SIG_ERR) {
 		fprintf(stderr, "can't catch SIGTERM\n");
 	}
-	if (signal(SIGINT, sig_handler) == SIG_ERR) {
-		fprintf(stderr, "can't catch SIGINT\n");
+	if (signal(SIGTSTP, sig_handler) == SIG_ERR) {
+		fprintf(stderr, "can't catch SIGTSTP\n");
 	}
 	if (signal(SIGCONT, sig_handler) == SIG_ERR) {
 		fprintf(stderr, "can't catch SIGCONT\n");
diff --git a/src/process3.c b/src/process3.c
index de70b8d..b75f903 100644
--- a/src/process3.c
+++ b/src/process3.c
@@ -20,23 +20,20 @@ int read_descriptor;
  */
 void sig_handler(int signo)
 {
+	fprintf(stderr, "[%s] Received %s!\n", "process3", strsignal(signo));
 	if (signo == SIGUSR1) {
-		fprintf(stderr, "[%s] Received SIGUSR1!\n", "process3");
 	}
 	else if (signo == SIGTERM) {
-		fprintf(stderr, "[%s] Received SIGTERM!\n", "process3");
 		fprintf(stderr, "[%s] > Releasing resources\n", "process3");
 		close(read_descriptor);
 		exit(0);
 	}
-	else if (signo == SIGINT) {
-		fprintf(stderr, "[%s] Received SIGINT!\n", "process3");
-		fprintf(stderr, "[%s] > Closing pipe\n", "process2");
+	else if (signo == SIGTSTP) {
+		fprintf(stderr, "[%s] > Closing pipe\n", "process3");
 		close(read_descriptor);
 	}
 	else if (signo == SIGCONT) {
-		fprintf(stderr, "[%s] Received SIGCONT!\n", "process3");
-		fprintf(stderr, "[%s] > Opening pipe\n", "process2");
+		fprintf(stderr, "[%s] > Opening pipe\n", "process3");
 		read_descriptor = open(read_pipe, O_RDONLY);
 	}
 }
@@ -63,8 +60,8 @@ int main(void) {
 	if (signal(SIGTERM, sig_handler) == SIG_ERR) {
 		fprintf(stderr, "can't catch SIGTERM\n");
 	}
-	if (signal(SIGINT, sig_handler) == SIG_ERR) {
-		fprintf(stderr, "can't catch SIGINT\n");
+	if (signal(SIGTSTP, sig_handler) == SIG_ERR) {
+		fprintf(stderr, "can't catch SIGTSTP\n");
 	}
 	if (signal(SIGCONT, sig_handler) == SIG_ERR) {
 		fprintf(stderr, "can't catch SIGCONT\n");
-- 
2.30.2