From bf295dd5b67c1e192600f3510de2d5d1e686c685 Mon Sep 17 00:00:00 2001
From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Thu, 5 Apr 2007 21:57:47 +0000
Subject: [PATCH] [u]mount: extend -t option (Roy Marples
 <uberlord@gentoo.org>)

---
 include/libbb.h     |  2 ++
 libbb/Kbuild        |  1 +
 util-linux/mount.c  |  5 ++---
 util-linux/umount.c | 10 +++++++---
 4 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/include/libbb.h b/include/libbb.h
index b56352626..dca611b68 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -17,6 +17,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
+#include <mntent.h>
 #include <netdb.h>
 #include <setjmp.h>
 #include <signal.h>
@@ -657,6 +658,7 @@ extern struct BB_applet *find_applet_by_name(const char *name);
 extern void run_applet_by_name(const char *name, int argc, char **argv);
 #endif
 
+extern int match_fstype(const struct mntent *mt, const char *fstypes);
 extern struct mntent *find_mount_point(const char *name, const char *table);
 extern void erase_mtab(const char * name);
 extern unsigned int tty_baud_to_value(speed_t speed);
diff --git a/libbb/Kbuild b/libbb/Kbuild
index bdf25da09..4865c9c7c 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -51,6 +51,7 @@ lib-y += llist.o
 lib-y += login.o
 lib-y += make_directory.o
 lib-y += makedev.o
+lib-y += match_fstype.o
 lib-y += md5.o
 lib-y += messages.o
 lib-y += mode_string.o
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 567514ccb..4a0237196 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -77,6 +77,7 @@ struct {
 		{"defaults", 0},
 		/* {"quiet", 0}, - do not filter out, vfat wants to see it */
 		{"noauto", MOUNT_NOAUTO},
+		{"sw", MOUNT_SWAP},
 		{"swap", MOUNT_SWAP},
 		USE_DESKTOP({"user",  MOUNT_USERS},)
 		USE_DESKTOP({"users", MOUNT_USERS},)
@@ -1703,9 +1704,7 @@ int mount_main(int argc, char **argv)
 
 		} else {
 			// Do we need to match a filesystem type?
-			// TODO: support "-t type1,type2"; "-t notype1,type2"
-
-			if (fstype && strcmp(mtcur->mnt_type, fstype)) continue;
+			if (fstype && match_fstype(mtcur, fstype)) continue;
 
 			// Skip noauto and swap anyway.
 
diff --git a/util-linux/umount.c b/util-linux/umount.c
index 4ea15d91b..19f13454b 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -12,7 +12,7 @@
 #include <mntent.h>
 #include <getopt.h>
 
-#define OPTION_STRING		"flDnravd"
+#define OPTION_STRING		"flDnravdt:"
 #define OPT_FORCE			1
 #define OPT_LAZY			2
 #define OPT_DONTFREELOOP	4
@@ -27,6 +27,7 @@ int umount_main(int argc, char **argv)
 	char path[2*PATH_MAX];
 	struct mntent me;
 	FILE *fp;
+	char *fstype = 0;
 	int status = EXIT_SUCCESS;
 	unsigned opt;
 	struct mtab_list {
@@ -37,7 +38,7 @@ int umount_main(int argc, char **argv)
 
 	/* Parse any options */
 
-	opt = getopt32(argc, argv, OPTION_STRING);
+	opt = getopt32(argc, argv, OPTION_STRING, &fstype);
 
 	argc -= optind;
 	argv += optind;
@@ -61,6 +62,9 @@ int umount_main(int argc, char **argv)
 			bb_error_msg_and_die("cannot open %s", bb_path_mtab_file);
 	} else {
 		while (getmntent_r(fp, &me, path, sizeof(path))) {
+			/* Match fstype if passed */
+			if (fstype && match_fstype(&me, fstype))
+				continue;
 			m = xmalloc(sizeof(struct mtab_list));
 			m->next = mtl;
 			m->device = xstrdup(me.mnt_fsname);
@@ -71,7 +75,7 @@ int umount_main(int argc, char **argv)
 	}
 
 	/* If we're not umounting all, we need at least one argument. */
-	if (!(opt & OPT_ALL)) {
+	if (!(opt & OPT_ALL) && !fstype) {
 		m = 0;
 		if (!argc) bb_show_usage();
 	}
-- 
2.25.1