Running `mount --move /foo /bar` would leave the old /foo entry in /etc/mtab and create a new /bar entry with wrong info. http://bugs.gentoo.org/104697 --- 1/mount/mount.c +++ 2/mount/mount.c @@ -665,6 +665,25 @@ else { mntFILE *mfp; + /* when moving a mount point, we have to make sure the mtab + * gets updated properly. We get info about the old mount + * point, copy it to the new mount point, and then delete + * the old mount point. */ + if (flags & MS_MOVE) { + const char *olddir = mnt.mnt_fsname; + struct mntentchn *oldmc = oldmc = getmntfile(olddir); + if (oldmc != NULL) { + mnt.mnt_fsname = xstrdup(oldmc->m.mnt_fsname); + mnt.mnt_type = oldmc->m.mnt_type; + mnt.mnt_opts = oldmc->m.mnt_opts; + mnt.mnt_freq = oldmc->m.mnt_freq; + mnt.mnt_passno = oldmc->m.mnt_passno; + } + update_mtab(olddir, NULL); + if (oldmc != NULL) + my_free(olddir); + } + lock_mtab(); mfp = my_setmntent(MOUNTED, "a+"); if (mfp == NULL || mfp->mntent_fp == NULL) {