fully simulate send/rcv not only ioctl()

Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>

diff --git a/src/gpio-utils.c b/src/gpio-utils.c
index 02c12569f8f3642854d4238ce5bb166d06bd092e..50cbedaa3397ca2c4d6036254c60d84fabf517ba 100644 (file)
--- a/src/gpio-utils.c
+++ b/src/gpio-utils.c
@@ -86,7 +86,14 @@ int gpiotools_request_line(int fd, unsigned int *lines,
        if (ret != sizeof(req)) {
                ret = -errno;
                fprintf(stderr, "Failed to write request %s (%d), %s\n",
-                           "GPIO_V2_GET_LINE_IOCTL", ret, strerror(errno));
+                           "GPIO_V2_GET_LINE_IOCTL", ret, strerror(errno));
+       }
+
+       ret = recv(fd, &req, sizeof(req), MSG_WAITALL);
+       if (ret != sizeof(req)) {
+               ret = -errno;
+               fprintf(stderr, "Failed to read request %s (%d), %s\n",
+                           "GPIO_V2_GET_LINE_IOCTL", ret, strerror(errno));
        }
 
        req.fd = fd;
@@ -158,10 +165,18 @@ int gpiotools_get_values(const int fd, struct gpio_v2_line_values *values)
                goto exit;
        }
 
+       ret = write(fd, values, sizeof(*values));
+       if (ret != sizeof(*values)) {
+               ret = -errno;
+               fprintf(stderr, "Failed to write %s (%d), %s\n",
+                       "GPIO_V2_LINE_GET_VALUES_IOCTL", ret, strerror(errno));
+               goto exit;
+       }       
+
        ret = recv(fd, &values, sizeof(*values), MSG_WAITALL);
        if (ret != sizeof(*values)) {
                ret = -errno;
-               fprintf(stderr, "Failed to recieve %s (%d), %s\n",
+               fprintf(stderr, "Failed to read %s (%d), %s\n",
                        "GPIO_V2_LINE_GET_VALUES_IOCTL", ret, strerror(errno));
        }