Package: busybox Version: 1:1.9.2-3 Severity: normal
The whole point of mount -f is to write to /etc/mtab I guess, at least it's how it is sometimes used when the filesystem is mounted by other means. As I read the code mount in busybox sets some flag when mtab is used but ignores the flag when mtab is not used. It should just (or check that the mount *could* be done if it wants to do something - like that the files/directories exist). Attached patch should make bysybox exit when mount -f is used and mtab is not compiled in. Thanks -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental') Architecture: i386 (i686) Kernel: Linux 2.6.23.3-src (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages busybox depends on: ii libc6 2.7-10 GNU C Library: Shared libraries busybox recommends no packages. -- no debconf information
--- util-linux/mount.c~ 2008-02-12 17:03:13.000000000 +0100 +++ util-linux/mount.c 2008-06-06 13:57:23.000000000 +0200 @@ -1635,22 +1635,22 @@ // Parse remaining options opt = getopt32(argv, "o:t:rwanfvsi", &opt_o, &fstype); + argv += optind; + argc -= optind; + + // Three or more non-option arguments? Die with a usage message. + if (argc > 2) bb_show_usage(); + if (opt & 0x1) append_mount_options(&cmdopts, opt_o); // -o //if (opt & 0x2) // -t if (opt & 0x4) append_mount_options(&cmdopts, "ro"); // -r if (opt & 0x8) append_mount_options(&cmdopts, "rw"); // -w //if (opt & 0x10) // -a if (opt & 0x20) USE_FEATURE_MTAB_SUPPORT(useMtab = 0); // -n - if (opt & 0x40) USE_FEATURE_MTAB_SUPPORT(fakeIt = 1); // -f + if (opt & 0x40) USE_FEATURE_MTAB_SUPPORT(fakeIt = 1)SKIP_FEATURE_MTAB_SUPPORT(exit(0)); // -f //if (opt & 0x80) // -v: verbose (ignore) //if (opt & 0x100) // -s: sloppy (ignore) //if (opt & 0x200) // -i: don't call mount.<fstype> (ignore) - argv += optind; - argc -= optind; - - // Three or more non-option arguments? Die with a usage message. - - if (argc > 2) bb_show_usage(); // If we have no arguments, show currently mounted filesystems
