Package: libpam-mount
Version: 0.28-1
Severity: normal
Hi,
when logging in as root and then su-ing to a user account everything works fine.
But at logout the su-command seems to have dropped root privileges, so umount
fails.
The login count is not decremented.
pam_mount(pam_mount.c:586) received order to close things
pam_mount(misc.c:55) Session close: (uid=1000, euid=1000, gid=1000,
egid=1000)
pam_mount(misc.c:284) command: /usr/sbin/pmvarrun [-u] [ingo] [-o] [-1]
pam_mount(misc.c:55) set_myuidpre: (uid=1000, euid=1000, gid=1000,
egid=1000)
pam_mount(misc.c:357) error setting uid to 0
pam_mount(pam_mount.c:424) pmvarrun says login count is 0
pam_mount(pam_mount.c:618) going to unmount
pam_mount(mount.c:413) information for mount:
pam_mount(mount.c:414) --
pam_mount(mount.c:415) (defined by globalconf)
pam_mount(mount.c:416) user: ingo
pam_mount(mount.c:417) server:
pam_mount(mount.c:418) volume:/home/ingo:crypt.img
pam_mount(mount.c:419) mountpoint:/home/ingo/crypt
pam_mount(mount.c:420) options: fsck,loop,nodev,nosuid,
pam_mount(mount.c:421) fs_key_cipher:
pam_mount(mount.c:422) fs_key_path:
pam_mount(mount.c:423) use_fstab: 0
pam_mount(mount.c:424) --
pam_mount(misc.c:284) command: lsof [/home/ingo/crypt]
lsof: WARNING: can't stat() ext3 file system /dev/.static/dev
Output information may be incomplete.
pam_mount(mount.c:103) pam_mount(mount.c:135) waiting for lsof
pam_mount(misc.c:284) command: /sbin/umount.crypt [/home/ingo/crypt]
pam_mount(misc.c:55) set_myuidpre: (uid=1000, euid=1000, gid=1000,
egid=1000)
pam_mount(misc.c:357) error setting uid to 0
pam_mount(mount.c:100) umount errors:
pam_mount(mount.c:103) You have to be root to use cryptsetup!
pam_mount(mount.c:103) umount: /home/ingo/crypt is not in the fstab
(and you are not root)
pam_mount(mount.c:103) umount.crypt: error unmounting /home/ingo/crypt
pam_mount(mount.c:598) waiting for umount
pam_mount(pam_mount.c:621) unmount of /home/ingo:crypt.img failed
pam_mount(pam_mount.c:632) pam_mount execution complete
pam_mount(pam_mount.c:115) Clean global config (0)
The decrement of the login count does work if 'su' is not the last session
to go away (and thus no umount attempted). I suppose this is most often the
case.
Ah, and i noticed that when the mounting of the crypto loop device
fails (such as when root is guessing the wrong password when su-ing to
the user account) a loop device is leaked.
Anyway this setup is rather useless so i only would make another
detailed bug report if you want me to.
Regards, ingo
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.22.9-cfs-v22
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Versions of packages libpam-mount depends on:
ii libc6 2.6.1-5 GNU C Library: Shared libraries
ii libhx101.10.1-1 A library providing queue, tree, I
ii libpam0g 0.99.7.1-4Pluggable Authentication Modules l
ii libssl0.9.80.9.8e-8 SSL shared libraries
ii libxml-writer-perl 0.603-1 Perl module for writing XML docume
ii libxml22.6.30.dfsg-2 GNOME XML library
ii mount 2.13-7Tools for mounting and manipulatin
libpam-mount recommends no packages.
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