FSBM 1.1

added -i flag for specific interfaces
added -r flag for raw byte counts

update usage

2 files changed, 33 insertions, 8 deletions

diff --git a/README.md b/README.md
index 934e916..90f3eff 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,8 @@
-well cbm, the console-bandwidth-monitor was a bit bloated. I don't want ncurses, so what we have here is a stripped down version
+well cbm, the console-bandwidth-monitor was a bit bloated. I don't want
+ncurses, so what we have here is a stripped down version
+
+
+fsbm 1.1
+
+- added -i option so user can specify a single interface
+- added -r option to output raw byte countst
diff --git a/fsbm.c b/fsbm.c
index ada40b8..18fa55c 100644
--- a/fsbm.c
+++ b/fsbm.c
@@ -22,8 +22,12 @@ struct iface {
 };
 
 
+bool raw = false;
+bool request_name_enabled = false;
 volatile bool q = false;
 bool use_bits = false;
+char *request_name;
+
 struct iface *interfaces = NULL;
 size_t no_iface = 0;
 
@@ -32,11 +36,18 @@ void endHandler(int signum) {
 }
 
 void print_bps(double bytesPerSecond) {
-	const char* prefixes[] = { "b", "k", "M", "G", "T", "P", "E", "Z", "Y" };
+	const char* prefixes[] = { "", "k", "M", "G", "T", "P", "E", "Z", "Y" };
 	double value;
 	const char* unit;
 	unsigned prefix = 0;
 
+	if(raw) {
+		if(use_bits) 
+			bytesPerSecond *= 8;
+		printf("%.2f", bytesPerSecond);
+		return;
+	}
+
 	// Calculate the value
 	if(use_bits) {
 		value = bytesPerSecond * 8;
@@ -97,15 +108,16 @@ void print_stats() {
 		}
 		len = name - buf;
 
+    if(request_name_enabled && strcmp(name, request_name) != 0) {
+			continue;
+		}
+
 		// Parse the statistics, alls well, then get this shit going, otherwise f it.
 		if(sscanf(stats, "%Lu %*u %*u %*u %*u %*u %*u %*u %Lu",
 					&rx_bytes, &tx_bytes) == 2) {
 
 			size_t i = 0;
 			bool found = false;
-			if(interfaces == NULL) {
-				goto skip;
-			}
 			for(i = 0; i < no_iface; i++) {
 				// if it exists in our interfaces, great. reuse the iface struct
 				if(strcmp(name, interfaces[i].interface) == 0) {
@@ -113,7 +125,6 @@ void print_stats() {
 					break;
 				}
 			}
-			skip:
 			if(found) {
 				double timeDelta, rx_speed, tx_speed = 0;
 
@@ -163,7 +174,7 @@ int main(int argc, char **argv) {
 	int c; 
 	unsigned long long interval = 10 * 100000;
 
-	while ((c = getopt (argc, argv, "bd:hv")) != -1) 
+	while ((c = getopt (argc, argv, "rbi:d:hv")) != -1) 
 		switch (c)
 		{
 			case 'b':
@@ -175,9 +186,16 @@ int main(int argc, char **argv) {
 				interval = interval * 100000;
 				break;
 			case 'h':
-				printf("USAGE: fsbm, -b specifies bits, -d sets interval in 10ths of seconds, 1 sec default\n");
+				printf("USAGE: fsbm, -i shows only matching interface, -r gives raw counts, -b specifies bits, -d sets interval in 10ths of seconds, 1 sec default\n");
 				exit(EXIT_SUCCESS);
 				break;
+			case 'i':
+				request_name_enabled = true;
+				request_name = strdup(optarg);
+				break;
+			case 'r':
+				raw = true;
+				break;
 			case 'v':
 				printf("Version 1\n");
 				exit(EXIT_SUCCESS);