When no disks are attached to a host, reading ahci_alpm_* files fail with "Invalid argument" (but ahci_alpm_accounting can be written, so an instance of ahci is created). This case is now checked by reading ahci_alpm_accounting before writing to it: if reading fails, the whole SCSI host is skipped. --- src/devices/ahci.cpp | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/devices/ahci.cpp b/src/devices/ahci.cpp index 26f83a3..21f9d19 100644 --- a/src/devices/ahci.cpp +++ b/src/devices/ahci.cpp @@ -258,12 +258,20 @@ void create_all_ahcis(void) while (1) { class ahci *bl; ofstream file; + ifstream check_file; entry = readdir(dir); if (!entry) break; if (entry->d_name[0] == '.') continue; sprintf(filename, "/sys/class/scsi_host/%s/ahci_alpm_accounting", entry->d_name); + + check_file.open(filename, ios::in); + check_file.get(); + check_file.close(); + if (check_file.bad()) + continue; + file.open(filename, ios::in); if (!file) continue; -- 1.7.10.2