1 files changed, 5 insertions, 10 deletions

diff --git a/utility.c b/utility.c
index 5bfed81d7..64598fab6 100644
--- a/utility.c
+++ b/utility.c
@@ -48,6 +48,7 @@
 #include <unistd.h>
 #include <ctype.h>
 #include <sys/param.h>                  /* for PATH_MAX */
+#include <sys/utsname.h>                /* for uname(2) */
 
 #if defined BB_FEATURE_MOUNT_LOOP
 #include <fcntl.h>
@@ -103,26 +104,20 @@ extern void fatalError(char *s, ...)
 }
 
 #if defined (BB_INIT) || defined (BB_PS)
-
-#if ! defined BB_FEATURE_USE_PROCFS
-#error Sorry, I depend on the /proc filesystem right now.
-#endif
 /* Returns kernel version encoded as major*65536 + minor*256 + patch,
  * so, for example,  to check if the kernel is greater than 2.2.11:
  *      if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> }
  */
 int get_kernel_revision()
 {
-        FILE *file;
+        struct utsname name;
         int major = 0, minor = 0, patch = 0;
 
-        file = fopen("/proc/sys/kernel/osrelease", "r");
-        if (file == NULL) {
-                /* bummer, /proc must not be mounted... */
+        if (uname(&name) == -1) {
+                perror("cannot get system information");
                 return (0);
         }
-        fscanf(file, "%d.%d.%d", &major, &minor, &patch);
-        fclose(file);
+        sscanf(name.version, "%d.%d.%d", &major, &minor, &patch);
         return major * 65536 + minor * 256 + patch;
 }
 #endif                                                  /* BB_INIT || BB_PS */