/* vi: set sw=4 ts=4: */ /* * Support functions for mounting devices by label/uuid * * Copyright (C) 2006 by Jason Schoon <floydpink@gmail.com> * Some portions cribbed from e2fsprogs, util-linux, dosfstools * * Licensed under GPLv2 or later, see file LICENSE in this source tree. */ //usage:#define findfs_trivial_usage //usage: "LABEL=label or UUID=uuid" //usage:#define findfs_full_usage "\n\n" //usage: "Find a filesystem device based on a label or UUID" //usage: //usage:#define findfs_example_usage //usage: "$ findfs LABEL=MyDevice" #include "libbb.h" #include "volume_id.h" int findfs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int findfs_main(int argc UNUSED_PARAM, char **argv) { char *dev = *++argv; if (!dev) bb_show_usage(); if (strncmp(dev, "/dev/", 5) == 0) { /* Just pass any /dev/xxx name right through. * This might aid in some scripts being able * to call this unconditionally */ dev = NULL; } else { /* Otherwise, handle LABEL=xxx and UUID=xxx, * fail on anything else */ if (!resolve_mount_spec(argv)) bb_show_usage(); } if (*argv != dev) { puts(*argv); return 0; } return 1; }