X-Git-Url: http://git.toastfreeware.priv.at/debian/cpulimit.git/blobdiff_plain/244f57d15fde67b6c9229628c51c8ed2f8a8e576..e9e7f2472441edafe516f585b1f01e8b8c9b771c:/cpulimit.c

diff --git a/cpulimit.c b/cpulimit.c
index 29aeca1..ba41986 100644
--- a/cpulimit.c
+++ b/cpulimit.c
@@ -248,22 +248,28 @@ void quit(int sig) {
 int getjiffies(int pid) {
 	static char stat[20];
 	static char buffer[1024];
+        char *p;
 	sprintf(stat,"/proc/%d/stat",pid);
 	FILE *f=fopen(stat,"r");
 	if (f==NULL) return -1;
-	fgets(buffer,sizeof(buffer),f);
+	p = fgets(buffer,sizeof(buffer),f);
 	fclose(f);
-	char *p=buffer;
-	p=memchr(p+1,')',sizeof(buffer)-(p-buffer));
-	int sp=12;
-	while (sp--)
+	// char *p=buffer;
+        if (p)
+        {
+	  p=memchr(p+1,')',sizeof(buffer)-(p-buffer));
+	  int sp=12;
+	  while (sp--)
 		p=memchr(p+1,' ',sizeof(buffer)-(p-buffer));
-	//user mode jiffies
-	int utime=atoi(p+1);
-	p=memchr(p+1,' ',sizeof(buffer)-(p-buffer));
-	//kernel mode jiffies
-	int ktime=atoi(p+1);
-	return utime+ktime;
+	  //user mode jiffies
+	  int utime=atoi(p+1);
+	  p=memchr(p+1,' ',sizeof(buffer)-(p-buffer));
+	  //kernel mode jiffies
+	  int ktime=atoi(p+1);
+	  return utime+ktime;
+        }
+        // could not read info
+        return -1;
 }
 
 //process instant photo
@@ -446,8 +452,9 @@ int main(int argc, char **argv) {
 		exit(1);
 	}
 	float limit=perclimit/100.0;
-	if (limit<0 || limit >1) {
-		fprintf(stderr,"Error: limit must be in the range 0-100\n");
+	if (limit <= 0.00) // || limit >1) {
+        {
+		fprintf(stderr,"Error: limit must be greater than 0\n");
 		print_usage (stderr, 1);
 		exit(1);
 	}