From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Sun, 13 Sep 2020 21:58:04 +0000 (+1000)
Subject: tools/record: add --grab option
X-Git-Tag: 1.16.901~83
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2d641e6b7bcd4f35b111d739b15d00ae407cc1d5;p=platform%2Fupstream%2Flibinput.git

tools/record: add --grab option

Useful to record devices like power buttons, lid switches, etc.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---

diff --git a/tools/libinput-record.c b/tools/libinput-record.c
index 6572858c..7ea5a011 100644
--- a/tools/libinput-record.c
+++ b/tools/libinput-record.c
@@ -2295,7 +2295,7 @@ mainloop(struct record_context *ctx)
 }
 
 static inline bool
-init_device(struct record_context *ctx, char *path)
+init_device(struct record_context *ctx, char *path, bool grab)
 {
 	struct record_device *d;
 	int fd, rc;
@@ -2325,6 +2325,17 @@ init_device(struct record_context *ctx, char *path)
 		goto error;
 	}
 
+	if (grab) {
+		rc = libevdev_grab(d->evdev, LIBEVDEV_GRAB);
+		if (rc != 0) {
+			fprintf(stderr,
+				"Grab failed on %s: %s\n",
+				path,
+				strerror(-rc));
+			goto error;
+		}
+	}
+
 	libevdev_set_clock_id(d->evdev, CLOCK_MONOTONIC);
 
 	if (libevdev_get_num_slots(d->evdev) > 0)
@@ -2446,6 +2457,7 @@ enum options {
 	OPT_MULTIPLE,
 	OPT_ALL,
 	OPT_LIBINPUT,
+	OPT_GRAB,
 };
 
 int
@@ -2463,11 +2475,12 @@ main(int argc, char **argv)
 		{ "all", no_argument, 0, OPT_ALL },
 		{ "help", no_argument, 0, OPT_HELP },
 		{ "with-libinput", no_argument, 0, OPT_LIBINPUT },
+		{ "grab", no_argument, 0, OPT_GRAB },
 		{ 0, 0, 0, 0 },
 	};
 	struct record_device *d, *tmp;
 	const char *output_arg = NULL;
-	bool all = false, with_libinput = false;
+	bool all = false, with_libinput = false, grab = false;
 	int ndevices;
 	int rc = EXIT_FAILURE;
 
@@ -2511,6 +2524,9 @@ main(int argc, char **argv)
 		case OPT_LIBINPUT:
 			with_libinput = true;
 			break;
+		case OPT_GRAB:
+			grab = true;
+			break;
 		default:
 			usage();
 			rc = EXIT_INVALID_USAGE;
@@ -2608,7 +2624,7 @@ main(int argc, char **argv)
 		d = devices;
 
 		while (*d) {
-			if (!init_device(&ctx, safe_strdup(*d))) {
+			if (!init_device(&ctx, safe_strdup(*d), grab)) {
 				strv_free(devices);
 				goto out;
 			}
@@ -2627,7 +2643,7 @@ main(int argc, char **argv)
 		for (int i = ndevices; i > 0; i -= 1) {
 			char *devnode = safe_strdup(argv[optind + i - 1]);
 
-			if (!init_device(&ctx, devnode))
+			if (!init_device(&ctx, devnode, grab))
 				goto out;
 		}
 	} else {
@@ -2638,7 +2654,7 @@ main(int argc, char **argv)
 			goto out;
 		}
 
-		if (!init_device(&ctx, path))
+		if (!init_device(&ctx, path, grab))
 			goto out;
 	}
 
diff --git a/tools/libinput-record.man b/tools/libinput-record.man
index e85eb10d..196ad0f3 100644
--- a/tools/libinput-record.man
+++ b/tools/libinput-record.man
@@ -58,6 +58,10 @@ Where \-\-output-file is not given and the first \fBor\fR last argument is
 not an input device, the first \fBor\fR last argument will be the output
 file.
 .TP 8
+.B \-\-grab
+Exclusively grab all opened devices. This will prevent events from being
+delivered to the host system.
+.TP 8
 .B \-\-show\-keycodes
 Show keycodes as-is in the recording. By default, common keys are obfuscated
 and printed as \fBKEY_A\fR to avoid information leaks.