5 files changed, 34 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index b84fbed0c7..5c38ced83f 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -9,7 +9,8 @@ CPPFLAGS += -DHAVE_LLSEEK=1
 endif
 
 ifeq ($(subdir),misc)
-sysdep_routines += sysctl clone llseek getresuid getresgid sys_setresuid
+sysdep_routines += sysctl clone llseek getresuid getresgid sys_setresuid \
+		   umount umount2
 
 sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h sys/mtio.h \
 		  sys/io.h sys/klog.h sys/kdaemon.h \
diff --git a/sysdeps/unix/sysv/linux/sys/mount.h b/sysdeps/unix/sysv/linux/sys/mount.h
index 589ecbc1c5..4b7154928c 100644
--- a/sysdeps/unix/sysv/linux/sys/mount.h
+++ b/sysdeps/unix/sysv/linux/sys/mount.h
@@ -82,6 +82,10 @@ enum
 #define BLKRAGET   _IO(0x12, 99) /* Get current read ahead setting.  */
 
 
+/* Possible value for FLAGS parameter of `umount2'.  */
+#define MNT_FORCE		/* Force unmounting.  */
+
+
 __BEGIN_DECLS
 
 /* Mount a filesystem.  */
@@ -92,6 +96,9 @@ extern int mount __P ((__const char *__special_file, __const char *__dir,
 /* Unmount a filesystem.  */
 extern int umount __P ((__const char *__special_file));
 
+/* Unmount a filesystem.  Forst unmounting if FALGS is set to MNT_FORCE.  */
+extern int umount2 __P ((__const char *__special_file, int __flags));
+
 __END_DECLS
 
 #endif /* _SYS_MOUNT_H */
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 6d06d0df99..82c6423afc 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -82,6 +82,5 @@ sys_writev	writev	writev		3	__syscall_writev
 sysinfo		EXTRA	sysinfo		1	sysinfo
 swapon		-	swapon		2	__swapon	swapon
 swapoff		-	swapoff		1	__swapoff	swapoff
-umount		EXTRA	umount		1	__umount	umount
 uselib		EXTRA	uselib		1	uselib
 wait4		-	wait4		4	__wait4		wait4
diff --git a/sysdeps/unix/sysv/linux/umount.S b/sysdeps/unix/sysv/linux/umount.S
new file mode 100644
index 0000000000..e18463e2e6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/umount.S
@@ -0,0 +1,12 @@
+/* This hack is necessary since the kernel people are making "strange"
+   changes.  They simply rename old system calls.  */
+
+#include <sysdep.h>
+#ifdef __NR_oldumount
+PSEUDO (__umount, oldumount, 1)
+#else
+PSEUDO (__umount, umount, 1)
+#endif
+	ret
+PSEUDO_END(__umount)
+weak_alias (__umount, umount)
diff --git a/sysdeps/unix/sysv/linux/umount2.S b/sysdeps/unix/sysv/linux/umount2.S
new file mode 100644
index 0000000000..92241bbf97
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/umount2.S
@@ -0,0 +1,13 @@
+/* umount system call with two parameters.  */
+
+#include <sysdep.h>
+#if defined __NR_oldumount || defined __NR_umount2
+#ifdef __NR_oldumount
+PSEUDO (__umount2, umount, 2)
+#else
+PSEUDO (__umount2, umount2, 2)
+#endif
+	ret
+PSEUDO_END(__umount2)
+weak_alias (__umount2, umount2)
+#endif