properly handle return codes

[project/procd.git] / plug / hotplug.c

diff --git a/plug/hotplug.c b/plug/hotplug.c
index 6df7971..1a98e8b 100644 (file)
--- a/plug/hotplug.c
+++ b/plug/hotplug.c
@@ -198,7 +198,10 @@ send_to_kernel:
                ERROR("Failed to open %s\n", loadpath);
                exit(-1);
        }
-       write(load, "1", 1);
+       if (write(load, "1", 1) == -1) {
+               ERROR("Failed to write to %s\n", loadpath);
+               exit(-1);
+       }
        close(load);
 
        snprintf(syspath, sizeof(syspath), "/sys/%s/data", dev);
@@ -214,7 +217,10 @@ send_to_kernel:
                if (len <= 0)
                        break;
 
-               write(fw, buf, len);
+               if (write(fw, buf, len) == -1) {
+                       ERROR("failed to write firmware file %s/%s to %s\n", dir, file, dev);
+                       break;
+               }
        }
 
        if (src >= 0)
@@ -222,7 +228,8 @@ send_to_kernel:
        close(fw);
 
        load = open(loadpath, O_WRONLY);
-       write(load, "0", 1);
+       if (write(load, "0", 1) == -1)
+               ERROR("failed to write to %s\n", loadpath);
        close(load);
 
        DEBUG(2, "Done loading %s\n", path);