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gpio: add null termination to consumer label in open of cdev impl

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This commit is contained in:
Vanya A. Sergeev
2020-11-19 23:27:05 -06:00
parent 9d3e06e336
commit 8e89b26aa9
1 changed files with 6 additions and 3 deletions
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src/gpio.c
+6 -3
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@@ -893,7 +893,8 @@ static int _gpio_cdev_reopen(gpio_t *gpio, gpio_direction_t direction, gpio_edge
request.lineoffsets[0] = gpio->u.cdev.line;
request.flags = flags | GPIOHANDLE_REQUEST_INPUT;
strncpy(request.consumer_label, gpio->u.cdev.label, sizeof(request.consumer_label));
strncpy(request.consumer_label, gpio->u.cdev.label, sizeof(request.consumer_label) - 1);
request.consumer_label[sizeof(request.consumer_label) - 1] = '\0';
request.lines = 1;
if (ioctl(gpio->u.cdev.chip_fd, GPIO_GET_LINEHANDLE_IOCTL, &request) < 0)
@@ -908,7 +909,8 @@ static int _gpio_cdev_reopen(gpio_t *gpio, gpio_direction_t direction, gpio_edge
request.eventflags = (edge == GPIO_EDGE_RISING) ? GPIOEVENT_REQUEST_RISING_EDGE :
(edge == GPIO_EDGE_FALLING) ? GPIOEVENT_REQUEST_FALLING_EDGE :
GPIOEVENT_REQUEST_BOTH_EDGES;
strncpy(request.consumer_label, gpio->u.cdev.label, sizeof(request.consumer_label));
strncpy(request.consumer_label, gpio->u.cdev.label, sizeof(request.consumer_label) - 1);
request.consumer_label[sizeof(request.consumer_label) - 1] = '\0';
if (ioctl(gpio->u.cdev.chip_fd, GPIO_GET_LINEEVENT_IOCTL, &request) < 0)
return _gpio_error(gpio, GPIO_ERROR_OPEN, errno, "Opening input event line handle");
@@ -923,7 +925,8 @@ static int _gpio_cdev_reopen(gpio_t *gpio, gpio_direction_t direction, gpio_edge
request.lineoffsets[0] = gpio->u.cdev.line;
request.flags = flags | GPIOHANDLE_REQUEST_OUTPUT;
request.default_values[0] = initial_value;
strncpy(request.consumer_label, gpio->u.cdev.label, sizeof(request.consumer_label));
strncpy(request.consumer_label, gpio->u.cdev.label, sizeof(request.consumer_label) - 1);
request.consumer_label[sizeof(request.consumer_label) - 1] = '\0';
request.lines = 1;
if (ioctl(gpio->u.cdev.chip_fd, GPIO_GET_LINEHANDLE_IOCTL, &request) < 0)