---
 vmstat.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

--- vmstat.c
+++ vmstat.c	2018-04-04 11:16:07.577968520 +0000
@@ -40,6 +40,7 @@
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <termios.h>
 #include <unistd.h>
 #include <time.h>
@@ -708,13 +709,12 @@ static void slabheader(void)
 
 static void slabformat(void)
 {
-	FILE *fSlab;
+	struct stat fSlab;
 	struct slab_cache *slabs;
 	unsigned long nSlab, i, j, k;
 	const char format[] = "%-24s %6u %6u %6u %6u\n";
 
-	fSlab = fopen("/proc/slabinfo", "rb");
-	if (!fSlab) {
+	if (stat("/proc/slabinfo", &fSlab) < 0) {
 		xwarnx(_("your kernel does not support slabinfo or your permissions are insufficient"));
 		return;
 	}
@@ -746,7 +746,6 @@ static void slabformat(void)
 		}
 		free(slabs);
 	}
-	fclose(fSlab);
 }
 
 static void disksum_format(void)