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tools/record: add --grab option

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

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2020-09-14 07:58:04 +10:00
parent 7dee616621
commit 2d641e6b7b
2 changed files with 25 additions and 5 deletions
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26
tools/libinput-record.c
View file

@ -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;
}

4
tools/libinput-record.man
View file

@ -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.