+static bool cpus_offline_empty(void)
+{
+ char offline_cpus_str[64];
+ FILE *fp;
+
+ fp = fopen("/sys/devices/system/cpu/offline", "r");
Check for fp == NULL before using it.
+ if (fscanf(fp, "%s", offline_cpus_str) < 0) {
fscanf() seems like a heavy hammer.
if (fgets(offline_cpus_str, sizeof(offline_cpus_str), fp) == NULL) {
+ if (!errno) {
Don't need an errno check (seems dubious mixing errno with stdio).
+ fclose(fp);
+ return 1;
return true;
+ }
+ ksft_perror("Could not read offline CPUs file!");
+ }
+
+ fclose(fp);
+
+ return 0;
return false;
+}
