NAME umount, umount2 - unmount filesystem LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/mount.h ... umount(const char * target ); int umount2(const char * target…NAME umount, umount2 - unmount filesystem LIBRARY Standard C library ( libc , -lc ) SYNOPSIS #include <sys/mount.h ... umount(const char * target ); int umount2(const char * target…temporary directory: chdir(new_root); pivot_root(".", "."); umount2(".", MNT_DETACH); This sequence succeeds because ... root and remove mount point. */ if (umount2(put_old, MNT_DE…