4 files changed, 29 insertions, 10 deletions

diff --git a/DRIVER_VERSION b/DRIVER_VERSION
index 5925946..1799f7a 100644
--- a/DRIVER_VERSION
+++ b/DRIVER_VERSION
@@ -1 +1 @@
-173.14.12
+173.14.15
diff --git a/kernel.c b/kernel.c
index d4fccc8..af9d3dd 100644
--- a/kernel.c
+++ b/kernel.c
@@ -670,8 +670,8 @@ void check_for_warning_messages(Options *op)
 int test_kernel_module(Options *op, Package *p)
 {
     char *cmd = NULL, *data;
-    int old_loglevel, new_loglevel = 0;
-    int ret, name[] = { CTL_KERN, KERN_PRINTK };
+    int old_loglevel = 0, new_loglevel = 0;
+    int fd, ret, name[] = { CTL_KERN, KERN_PRINTK };
     size_t len = sizeof(int);
 
     /* 
@@ -687,9 +687,17 @@ int test_kernel_module(Options *op, Package *p)
      * Save the original console loglevel to allow restoring it once
      * we're done.
      */
-    if (!sysctl(name, 2, &old_loglevel, &len, NULL, 0)) {
-        new_loglevel = 2; /* KERN_CRIT */
-        sysctl(name, 2, NULL, 0, &new_loglevel, len);
+    fd = open("/proc/sys/kernel/printk", O_RDWR);
+    if (fd >= 0) {
+        if (read(fd, &old_loglevel, 1) == 1) {
+            new_loglevel = '2'; /* KERN_CRIT */
+            write(fd, &new_loglevel, 1);
+        }
+    } else {
+        if (!sysctl(name, 2, &old_loglevel, &len, NULL, 0)) {
+            new_loglevel = 2; /* KERN_CRIT */
+            sysctl(name, 2, NULL, 0, &new_loglevel, len);
+        }
     }
 
     /*
@@ -782,9 +790,16 @@ int test_kernel_module(Options *op, Package *p)
 
     nvfree(cmd);
     nvfree(data);
-    
-    if (new_loglevel != 0) sysctl(name, 2, NULL, 0, &old_loglevel, len);
-    
+
+    if (fd >= 0) {
+        if (new_loglevel != 0)
+            write(fd, &old_loglevel, 1);
+        close(fd);
+    } else {
+        if (new_loglevel != 0)
+            sysctl(name, 2, NULL, 0, &old_loglevel, len);
+    }
+
     return ret;
     
 } /* test_kernel_module() */
diff --git a/misc.c b/misc.c
index 540ae2e..10304ac 100644
--- a/misc.c
+++ b/misc.c
@@ -700,7 +700,9 @@ int find_system_utils(Options *op)
         { "grep",     "grep" },
         { "dmesg",    "util-linux" },
         { "tail",     "coreutils" },
-        { "cut",      "coreutils" }
+        { "cut",      "coreutils" },
+        { "tr",       "coreutils" },
+        { "sed",      "sed" }
     };
     
     /* keep in sync with the SystemOptionalUtils enum type */
diff --git a/nvidia-installer.h b/nvidia-installer.h
index e664dbf..509e441 100644
--- a/nvidia-installer.h
+++ b/nvidia-installer.h
@@ -46,6 +46,8 @@ typedef enum {
     DMESG,
     TAIL,
     CUT,
+    TR,
+    SED,
     MAX_SYSTEM_UTILS
 } SystemUtils;