fs lsmount subcommand for listing VFS mountpoint info

user/fs/lsmount.c

@@ -0,0 +1,18 @@
+#include <stdint.h>
+#include <stddef.h>
+#include <ulib.h>
+
+static const char *fstypes[] = { "Little FS" };
+
+void fs_lsmount(void) {
+  VfsAvailMounts availmounts; ZERO(&availmounts);
+  vfsavailmounts(&availmounts);
+
+  for (size_t i = 0; i < ARRLEN(availmounts.fieldavail); i++) {
+    if (availmounts.fieldavail[i]) {
+      VfsMountStat stat; ZERO(&stat);
+      vfsmountstat(&stat, (char *)availmounts.labels[i]);
+      uprintf("%-30s %-10s %-30s\n", stat.label, fstypes[stat.fstype], stat.devname);
+    }
+  }
+}

user/fs/main.c

@@ -5,7 +5,7 @@
 #define CMDS(X)                     \
   X(fetch)    X(mkf)    X(mkd)      \
   X(tree)     X(mount)  X(del)      \
-  X(fmt)      X(unmount)
+  X(fmt)      X(unmount) X(lsmount) \
 
 void main(void) {
   if (argslen() == 0) {