Mark unused parameters, fix compiler warnings

diff --git a/components/battery.c b/components/battery.c
index a63b9d0..4c6b4f5 100644 (file)
--- a/components/battery.c
+++ b/components/battery.c
@@ -52,11 +52,13 @@
        #include <unistd.h>
 
        const char *
-       battery_perc(const char *null)
+       battery_perc(const char *bat)
        {
                struct apm_power_info apm_info;
                int fd;
 
+               UNUSED(bat); /* no way to specify battery on OpenBSD */
+
                fd = open("/dev/apm", O_RDONLY);
                if (fd < 0) {
                        fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));
@@ -88,6 +90,8 @@
                        { APM_AC_OFF,     "-" },
                };
 
+               UNUSED(bat); /* no way to specify battery on OpenBSD */
+
                fd = open("/dev/apm", O_RDONLY);
                if (fd < 0) {
                        fprintf(stderr, "open '/dev/apm': %s\n", strerror(errno));

diff --git a/components/temperature.c b/components/temperature.c
index 35bdb01..b29eb86 100644 (file)
--- a/components/temperature.c
+++ b/components/temperature.c
@@ -21,12 +21,14 @@
        #include <sys/sysctl.h>
 
        const char *
-       temp(const char *null)
+       temp(const char *file)
        {
                int mib[5];
                size_t size;
                struct sensor temp;
 
+               UNUSED(file); /* no temperature file on OpenBSD */
+
                mib[0] = CTL_HW;
                mib[1] = HW_SENSORS;
                mib[2] = 0; /* cpu0 */

diff --git a/util.h b/util.h
index e90c29d..53e4104 100644 (file)
--- a/util.h
+++ b/util.h
@@ -3,5 +3,7 @@ extern char buf[1024];
 
 #define LEN(x) (sizeof (x) / sizeof *(x))
 
+#define UNUSED(x) (void)x
+
 const char *bprintf(const char *fmt, ...);
 int pscanf(const char *path, const char *fmt, ...);