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| author | Karel Zak | 2009-09-30 16:54:17 +0200 |
|---|---|---|
| committer | Karel Zak | 2009-09-30 16:54:17 +0200 |
| commit | 3d1b35b62dd15282162c21895c25b297768dcbb6 (patch) | |
| tree | faa9951f9795a06e7e18611dbb59dc8bfed347a9 /mount/mount.c | |
| parent | build-sys: add --disable-makeinstall-setuid (diff) | |
| download | kernel-qcow2-util-linux-3d1b35b62dd15282162c21895c25b297768dcbb6.tar.gz kernel-qcow2-util-linux-3d1b35b62dd15282162c21895c25b297768dcbb6.tar.xz kernel-qcow2-util-linux-3d1b35b62dd15282162c21895c25b297768dcbb6.zip | |
mount: more verbose "mount: only root can do that" message
> [chroot-i486] root:/$ whoami
> root
> [chroot-i486] root:/$ mkdir -p /dev1
> [chroot-i486] root:/$ mount --move /dev /dev1
> mount: only root can do that
Reported-by: Gilles Espinasse <g.esp@free.fr>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'mount/mount.c')
| -rw-r--r-- | mount/mount.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/mount/mount.c b/mount/mount.c index e8cb54992..23d70cb14 100644 --- a/mount/mount.c +++ b/mount/mount.c @@ -2205,12 +2205,18 @@ main(int argc, char *argv[]) { if (((uid_t)0 == ruid) && (ruid == euid)) { restricted = 0; } - } - if (restricted && - (types || options || readwrite || nomtab || mount_all || - fake || mounttype || (argc + specseen) != 1)) { - die (EX_USAGE, _("mount: only root can do that")); + if (restricted && + (types || options || readwrite || nomtab || mount_all || + fake || mounttype || (argc + specseen) != 1)) { + + if (ruid == 0 && euid != 0) + /* user is root, but setuid to non-root */ + die (EX_USAGE, _("mount: only root can do that " + "(effective UID is %d)"), euid); + + die (EX_USAGE, _("mount: only root can do that")); + } } atexit(unlock_mtab); |