Scripts diversos de C

varios/C/getvol.c

@@ -0,0 +1,33 @@
+#include <alsa/asoundlib.h>
+
+int main() {
+        snd_mixer_t *mixer;
+
+        if (snd_mixer_open(&mixer, 1) ||
+            snd_mixer_attach(mixer, "default") ||
+            snd_mixer_selem_register(mixer, NULL, NULL) ||
+            snd_mixer_load(mixer)) exit(42);
+
+        snd_mixer_selem_id_t *id;
+
+        snd_mixer_selem_id_alloca(&id);
+
+        snd_mixer_selem_id_set_index(id, 0);
+
+        snd_mixer_selem_id_set_name(id, "Master");
+
+        snd_mixer_elem_t *elem = snd_mixer_find_selem(mixer, id);
+
+        if (!elem) {
+                exit(5);
+        }
+        long min, max, vol;
+
+        snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+
+        snd_mixer_selem_get_playback_volume(elem,
+                                            SND_MIXER_SCHN_FRONT_LEFT, &vol);
+
+        printf("%li%%", ((vol - min)*100 + (max - min)/2) / (max - min));
+        snd_mixer_close(mixer);
+}

varios/C/glibc.c

@@ -11,12 +11,13 @@
 int main(int argc, const char const *argv[]) {
 	const char const *shell[] = { "/bin/sh", NULL };
 
-	// move glibc stuff in place
+	/* move glibc stuff in place */
 	e("unshare",unshare(CLONE_NEWNS));
 	e("mount",mount(SRC "/usr", "/usr", NULL, MS_BIND, NULL));
+	e("mount",mount(SRC "/opt", "/opt", NULL, MS_BIND, NULL));
 	e("mount",mount(SRC "/var/db/xbps", "/var/db/xbps", NULL, MS_BIND, NULL));
 
-	// drop the rights suid gave us
+	/* drop the rights suid gave us */
 	e("setuid",setreuid(getuid(),getuid()));
 	e("setgid",setregid(getgid(),getgid()));