1 files changed, 39 insertions, 0 deletions
diff --git a/src/netinfo.c b/src/netinfo.c
new file mode 100644
index 0000000..f159df1
--- /dev/null
+++ b/src/netinfo.c
@@ -0,0 +1,39 @@
+/**
+ * Cmon (c'mon) is a simple system resource monitor
+ * Copyright (C) 2022  Aaron Ball <nullspoon@oper.io>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#include "netinfo.h"
+
+// direction: r (receive) or t (transmit)
+unsigned long long net_x_bytes(char* dev, char direction) {
+  char procpath[1024] = {'\0'};
+  int status = 0;
+  unsigned long long bytes;
+
+  // Assemble the path
+  sprintf(procpath, "/sys/class/net/%s/statistics/%cx_bytes", dev, direction);
+
+  // Read value
+  FILE* fd = fopen(procpath, "r");
+  status = fscanf(fd, "%lld", &bytes);
+  fclose(fd);
+
+  // Ensure read worked
+  if(status == 0)
+    return -1;
+
+  return bytes;
+}