tools: append strerror to the error messages

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>

4 files changed, 7 insertions, 7 deletions

diff --git a/tools/evemu-device.c b/tools/evemu-device.c
index 66047f2..925e5d5 100644
--- a/tools/evemu-device.c
+++ b/tools/evemu-device.c
@@ -119,7 +119,7 @@ int main(int argc, char *argv[])
 	}
 	fp = fopen(argv[1], "r");
 	if (!fp) {
-		fprintf(stderr, "error: could not open file\n");
+		fprintf(stderr, "error: could not open file (%m)\n");
 		return -1;
 	}
 	ret = evemu_device(fp);
diff --git a/tools/evemu-event.c b/tools/evemu-event.c
index 0ee4c8e..ce928ac 100644
--- a/tools/evemu-event.c
+++ b/tools/evemu-event.c
@@ -152,7 +152,7 @@ int main(int argc, char *argv[])
 
 	fd = open(path, O_WRONLY);
 	if (fd < 0) {
-		fprintf(stderr, "error: could not open device\n");
+		fprintf(stderr, "error: could not open device (%m)\n");
 		goto out;
 	}
 
diff --git a/tools/evemu-play.c b/tools/evemu-play.c
index d819567..84aa668 100644
--- a/tools/evemu-play.c
+++ b/tools/evemu-play.c
@@ -56,7 +56,7 @@ int main(int argc, char *argv[])
 	}
 	fd = open(argv[1], O_WRONLY);
 	if (fd < 0) {
-		fprintf(stderr, "error: could not open device\n");
+		fprintf(stderr, "error: could not open device (%m)\n");
 		return -1;
 	}
 	if (evemu_play(stdin, fd)) {
diff --git a/tools/evemu-record.c b/tools/evemu-record.c
index 305bfe5..eedf4fa 100644
--- a/tools/evemu-record.c
+++ b/tools/evemu-record.c
@@ -108,7 +108,7 @@ int main(int argc, char *argv[])
 	}
 	fd = open(device, O_RDONLY | O_NONBLOCK);
 	if (fd < 0) {
-		fprintf(stderr, "error: could not open device\n");
+		fprintf(stderr, "error: could not open device (%m)\n");
 		return -1;
 	}
 
@@ -116,11 +116,11 @@ int main(int argc, char *argv[])
 	act.sa_handler = &handler;
 
 	if (sigaction(SIGTERM, &act, NULL) < 0) {
-		fprintf (stderr, "Could not attach TERM signal handler.\n");
+		fprintf (stderr, "Could not attach TERM signal handler (%m)\n");
 		return 1;
 	}
 	if (sigaction(SIGINT, &act, NULL) < 0) {
-		fprintf (stderr, "Could not attach INT signal handler.\n");
+		fprintf (stderr, "Could not attach INT signal handler (%m)\n");
 		return 1;
 	}
 
@@ -129,7 +129,7 @@ int main(int argc, char *argv[])
 	else {
 		output = fopen(argv[2], "w");
 		if (!output) {
-			fprintf(stderr, "error: could not open output file");
+			fprintf(stderr, "error: could not open output file (%m)");
 		}
 	}