From 7cf5bfe38b8345b2466d3ef7ba7d06040dc57e9d Mon Sep 17 00:00:00 2001
From: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
Date: Wed, 16 Aug 2017 20:48:34 -0400
Subject: Improve C example.
---
.gitignore | 1 +
Makefile | 10 +++++++++-
example.c | 6 +++++-
3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/.gitignore b/.gitignore
index 0ac38cb..c8df796 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
/inhibit-screensaver
+/c-example
*.o
diff --git a/Makefile b/Makefile
index 699b2a1..685a684 100644
--- a/Makefile
+++ b/Makefile
@@ -3,13 +3,21 @@ bindir := $(prefix)/bin
CFLAGS += $(shell pkg-config --cflags dbus-1) -Wall -Wextra -std=c99
LDLIBS := $(shell pkg-config --libs dbus-1)
+all: inhibit-screensaver c-example
inhibit-screensaver: inhibit-screensaver.o
+c-example: c-example.o
+
+c-example.o: example.c
+ $(COMPILE.c) $(OUTPUT_OPTION) $<
+
clean:
- $(RM) inhibit-screensaver.o inhibit-screensaver
+ $(RM) inhibit-screensaver.o inhibit-screensaver c-example.o c-example
install:
install -D -m0755 inhibit-screensaver $(bindir)
uninstall:
$(RM) $(bindir)/inhibit-screensaver
+
+.PHONY: clean install uninstall
diff --git a/example.c b/example.c
index b822312..2eeac2d 100644
--- a/example.c
+++ b/example.c
@@ -1,3 +1,4 @@
+#define _DEFAULT_SOURCE
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
@@ -22,11 +23,14 @@ int main() {
// works even if process dies!
kill(getpid(), SIGKILL);
+
+ // otherwise, release the inhibition:
+ close(pipefd[1]);
} else {
close(pipefd[1]);
- close(0);
dup2(pipefd[0], 0);
execl("./inhibit-screensaver", "./inhibit-screensaver", "c-inhibitor-example", "testing", (char *)NULL);
+ perror("exec inhibit-screensaver");
exit(1);
}
}
--
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