Imported Upstream version 4.4upstream/4.4

33 files changed, 2004 insertions, 0 deletions

diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config.txt b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config.txt
new file mode 100644
index 00000000..e9e4bbed
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config.txt
@@ -0,0 +1 @@
+group foo, GID 1000
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/group b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/group
new file mode 100644
index 00000000..2a5b8a4a
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/group
@@ -0,0 +1,42 @@
+root:x:0:
+daemon:x:1:
+bin:x:2:
+sys:x:3:
+adm:x:4:
+tty:x:5:
+disk:x:6:
+lp:x:7:
+mail:x:8:
+news:x:9:
+uucp:x:10:
+man:x:12:
+proxy:x:13:
+kmem:x:15:
+dialout:x:20:
+fax:x:21:
+voice:x:22:
+cdrom:x:24:
+floppy:x:25:
+tape:x:26:
+sudo:x:27:
+audio:x:29:
+dip:x:30:
+www-data:x:33:
+backup:x:34:
+operator:x:37:
+list:x:38:
+irc:x:39:
+src:x:40:
+gnats:x:41:
+shadow:x:42:
+utmp:x:43:
+video:x:44:
+sasl:x:45:
+plugdev:x:46:
+staff:x:50:
+games:x:60:
+users:x:100:
+nogroup:x:65534:
+crontab:x:101:
+Debian-exim:x:102:
+foo:x:1000:foo
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/gshadow b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/gshadow
new file mode 100644
index 00000000..ed34100c
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/gshadow
@@ -0,0 +1,42 @@
+root:*::
+daemon:*::
+bin:*::
+sys:*::
+adm:*::
+tty:*::
+disk:*::
+lp:*::
+mail:*::
+news:*::
+uucp:*::
+man:*::
+proxy:*::
+kmem:*::
+dialout:*::
+fax:*::
+voice:*::
+cdrom:*::
+floppy:*::
+tape:*::
+sudo:*::
+audio:*::
+dip:*::
+www-data:*::
+backup:*::
+operator:*::
+list:*::
+irc:*::
+src:*::
+gnats:*::
+shadow:*::
+utmp:*::
+video:*::
+sasl:*::
+plugdev:*::
+staff:*::
+games:*::
+users:*::
+nogroup:*::
+crontab:x::
+Debian-exim:x::
+foo:*::foo
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/login.defs b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/login.defs
new file mode 100644
index 00000000..84fb3cce
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/login.defs
@@ -0,0 +1,315 @@
+#
+# /etc/login.defs - Configuration control definitions for the login package.
+#
+# Three items must be defined:  MAIL_DIR, ENV_SUPATH, and ENV_PATH.
+# If unspecified, some arbitrary (and possibly incorrect) value will
+# be assumed.  All other items are optional - if not specified then
+# the described action or option will be inhibited.
+#
+# Comment lines (lines beginning with "#") and blank lines are ignored.
+#
+# Modified for Linux.  --marekm
+
+# REQUIRED for useradd/userdel/usermod
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define MAIL_DIR and MAIL_FILE,
+#   MAIL_DIR takes precedence.
+#
+#   Essentially:
+#      - MAIL_DIR defines the location of users mail spool files
+#        (for mbox use) by appending the username to MAIL_DIR as defined
+#        below.
+#      - MAIL_FILE defines the location of the users mail spool files as the
+#        fully-qualified filename obtained by prepending the user home
+#        directory before $MAIL_FILE
+#
+# NOTE: This is no more used for setting up users MAIL environment variable
+#       which is, starting from shadow 4.0.12-1 in Debian, entirely the
+#       job of the pam_mail PAM modules
+#       See default PAM configuration files provided for
+#       login, su, etc.
+#
+# This is a temporary situation: setting these variables will soon
+# move to /etc/default/useradd and the variables will then be
+# no more supported
+MAIL_DIR        /var/mail
+#MAIL_FILE      .mail
+
+#
+# Enable logging and display of /var/log/faillog login failure info.
+# This option conflicts with the pam_tally PAM module.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login failures are recorded.
+#
+# WARNING: Unknown usernames may become world readable. 
+# See #290803 and #298773 for details about how this could become a security
+# concern
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable "syslog" logging of su activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp and sg.
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, all su activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format something like "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login failures will be logged here in a utmp format
+# last, when invoked as lastb, will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then a "ps" will display the
+# command is "-su".  If not defined, then "ps" would display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV_PATH	PATH=/usr/local/bin:/usr/bin:/bin:/usr/games
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a "write" program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP to the group number and
+# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
+# TTYPERM to either 622 or 600.
+#
+# In Debian /usr/bin/bsd-write or similar programs are setgid tty
+# However, the default and recommended value for TTYPERM is still 0600
+# to not allow anyone to write to anyone else console or terminal
+
+# Users can still allow other people to write them by issuing 
+# the "mesg y" command.
+
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	UMASK		Default "umask" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+# 
+# UMASK usage is discouraged because it catches only some classes of user
+# entries to system, in fact only those made through login(1), while setting
+# umask in shell rc file will catch also logins through su, cron, ssh etc.
+#
+# At the same time, using shell rc to set umask won't catch entries which use
+# non-shell executables in place of login shell, like /usr/sbin/pppd for "ppp"
+# user and alike.
+#
+# Therefore the use of pam_umask is recommended (Debian package libpam-umask)
+# as the solution which catches all these cases on PAM-enabled systems.
+# 
+# This avoids the confusion created by having the umask set
+# in two different places -- in login.defs and shell rc files (i.e.
+# /etc/profile).
+#
+# For discussion, see #314539 and #248150 as well as the thread starting at
+# http://lists.debian.org/debian-devel/2005/06/msg01598.html
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+# 022 is the "historical" value in Debian for UMASK when it was used
+# 027, or even 077, could be considered better for privacy
+# There is no One True Answer here : each sysadmin must make up his/her
+# mind.
+#UMASK		022
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	99999
+PASS_MIN_DAYS	0
+PASS_WARN_AGE	7
+
+#
+# Min/max values for automatic uid selection in useradd
+#
+UID_MIN			 1000
+UID_MAX			60000
+
+#
+# Min/max values for automatic gid selection in groupadd
+#
+GID_MIN			  100
+GID_MAX			60000
+
+#
+# Max number of login retries if password is bad. This will most likely be
+# overriden by PAM, since the default pam_unix module has it's own built
+# in of 3 retries. However, this is a safe fallback in case you are using
+# an authentication module that does not enforce PAM_MAXTRIES.
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login
+#
+LOGIN_TIMEOUT		60
+
+#
+# Which fields may be changed by regular users using chfn - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+# 
+CHFN_RESTRICT		rwh
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default in no.
+#
+DEFAULT_HOME	yes
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# This enables userdel to remove user groups if no members exist.
+#
+# Other former uses of this variable such as setting the umask when
+# user==primary group are not used in PAM environments, thus in Debian
+#
+USERGROUPS_ENAB yes
+
+#
+# Instead of the real user shell, the program specified by this parameter
+# will be launched, although its visible name (argv[0]) will be the shell's.
+# The program may do whatever it wants (logging, additional authentification,
+# banner, ...) before running the actual shell.
+#
+# FAKE_SHELL /bin/fakeshell
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# upon these devices.
+#
+# This variable is used by login and su.
+#
+#CONSOLE	/etc/consoles
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in on the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in on the console.
+# How to do it is left as an exercise for the reader...
+#
+# This variable is used by login and su.
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# Only works if compiled with MD5_CRYPT defined:
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# This variable is used by chpasswd, gpasswd and newusers.
+#
+#MD5_CRYPT_ENAB	no
+
+################# OBSOLETED BY PAM ##############
+#						#
+# These options are now handled by PAM. Please	#
+# edit the appropriate file in /etc/pam.d/ to	#
+# enable the equivelants of them.
+#
+###############
+
+#MOTD_FILE
+#DIALUPS_CHECK_ENAB
+#LASTLOG_ENAB
+#MAIL_CHECK_ENAB
+#OBSCURE_CHECKS_ENAB
+#PORTTIME_CHECKS_ENAB
+#SU_WHEEL_ONLY
+#CRACKLIB_DICTPATH
+#PASS_CHANGE_TRIES
+#PASS_ALWAYS_WARN
+#ENVIRON_FILE
+#NOLOGINS_FILE
+#ISSUE_FILE
+#PASS_MIN_LEN
+#PASS_MAX_LEN
+#ULIMIT
+#ENV_HZ
+#CHFN_AUTH
+#CHSH_AUTH
+#FAIL_DELAY
+
+################# OBSOLETED #######################
+#						  #
+# These options are no more handled by shadow.    #
+#                                                 #
+# Shadow utilities will display a warning if they #
+# still appear.                                   #
+#                                                 #
+###################################################
+
+# CLOSE_SESSIONS
+# LOGIN_STRING
+# NO_PASSWORD_CONSOLE
+# QMAIL_DIR
+
+
+
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/passwd b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/passwd
new file mode 100644
index 00000000..bf52df00
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/passwd
@@ -0,0 +1,20 @@
+root:x:0:0:root:/root:/bin/bash
+daemon:x:1:1:daemon:/usr/sbin:/bin/sh
+bin:x:2:2:bin:/bin:/bin/sh
+sys:x:3:3:sys:/dev:/bin/sh
+sync:x:4:65534:sync:/bin:/bin/sync
+games:x:5:60:games:/usr/games:/bin/sh
+man:x:6:12:man:/var/cache/man:/bin/sh
+lp:x:7:7:lp:/var/spool/lpd:/bin/sh
+mail:x:8:8:mail:/var/mail:/bin/sh
+news:x:9:9:news:/var/spool/news:/bin/sh
+uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
+proxy:x:13:13:proxy:/bin:/bin/sh
+www-data:x:33:33:www-data:/var/www:/bin/sh
+backup:x:34:34:backup:/var/backups:/bin/sh
+list:x:38:38:Mailing List Manager:/var/list:/bin/sh
+irc:x:39:39:ircd:/var/run/ircd:/bin/sh
+gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
+nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
+Debian-exim:x:102:102::/var/spool/exim4:/bin/false
+foo:x:1000:1000::/home/foo:/bin/false
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/shadow b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/shadow
new file mode 100644
index 00000000..2baad3b4
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/config/etc/shadow
@@ -0,0 +1,20 @@
+root:$1$NBLBLIXb$WUgojj1bNuxWEADQGt1m9.:12991:0:99999:7:::
+daemon:*:12977:0:99999:7:::
+bin:*:12977:0:99999:7:::
+sys:*:12977:0:99999:7:::
+sync:*:12977:0:99999:7:::
+games:*:12977:0:99999:7:::
+man:*:12977:0:99999:7:::
+lp:*:12977:0:99999:7:::
+mail:*:12977:0:99999:7:::
+news:*:12977:0:99999:7:::
+uucp:*:12977:0:99999:7:::
+proxy:*:12977:0:99999:7:::
+www-data:*:12977:0:99999:7:::
+backup:*:12977:0:99999:7:::
+list:*:12977:0:99999:7:::
+irc:*:12977:0:99999:7:::
+gnats:*:12977:0:99999:7:::
+nobody:*:12977:0:99999:7:::
+Debian-exim:!:12977:0:99999:7:::
+foo:!:12977:0:99999:7:::
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/data/pwunconv.err b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/data/pwunconv.err
new file mode 100644
index 00000000..a1368c94
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/data/pwunconv.err
@@ -0,0 +1,2 @@
+rename FAILURE /etc/passwd+ /etc/passwd
+pwunconv: failure while writing changes to /etc/passwd
diff --git a/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/pwunconv.test b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/pwunconv.test
new file mode 100755
index 00000000..3f1d3121
--- /dev/null
+++ b/tests/failures/pwunconv/01_pwunconv_passwd_rename_failure/pwunconv.test
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+
+. ../../../common/config.sh
+. ../../../common/log.sh
+
+log_start "$0" "pwunconv reports failure to write /etc/passwd"
+
+save_config
+
+# restore the files on exit
+trap 'log_status "$0" "FAILURE"; restore_config' 0
+
+change_config
+
+echo -n "Disable shadow passwords (pwunconv)..."
+LD_PRELOAD=../../../common/rename_failure.so FAILURE_PATH=/etc/passwd pwunconv 2>tmp/pwunconv.err && exit 1 || {
+	status=$?
+}
+echo "OK"
+
+echo -n "Check returned status ($status)..."
+test "$status" = "3"
+echo "OK"
+
+echo "pwunconv reported:"
+echo "======================================================================="
+cat tmp/pwunconv.err
+echo "======================================================================="
+echo -n "Check that there were a failure message..."
+diff -au data/pwunconv.err tmp/pwunconv.err
+echo "error message OK."
+rm -f tmp/pwunconv.err
+
+echo -n "Check the passwd file..."
+../../../common/compare_file.pl config/etc/passwd /etc/passwd
+echo "OK"
+echo -n "Check the group file..."
+../../../common/compare_file.pl config/etc/group /etc/group
+echo "OK"
+echo -n "Check the shadow file..."
+../../../common/compare_file.pl config/etc/shadow /etc/shadow
+echo "OK"
+echo -n "Check the gshadow file..."
+../../../common/compare_file.pl config/etc/gshadow /etc/gshadow
+echo "OK"
+
+log_status "$0" "SUCCESS"
+restore_config
+trap '' 0
+
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config.txt b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config.txt
new file mode 100644
index 00000000..e9e4bbed
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config.txt
@@ -0,0 +1 @@
+group foo, GID 1000
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/group b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/group
new file mode 100644
index 00000000..fecba0c4
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/group
@@ -0,0 +1,42 @@
+root:x:0:
+daemon:x:1:
+bin:x:2:
+sys:x:3:
+adm:x:4:
+tty:x:5:
+disk:x:6:
+lp:x:7:
+mail:x:8:
+news:x:9:
+uucp:x:10:
+man:x:12:
+proxy:x:13:
+kmem:x:15:
+dialout:x:20:
+fax:x:21:
+voice:x:22:
+cdrom:x:24:
+floppy:x:25:
+tape:x:26:
+sudo:x:27:
+audio:x:29:
+dip:x:30:
+www-data:x:33:
+backup:x:34:
+operator:x:37:
+list:x:38:
+irc:x:39:
+src:x:40:
+gnats:x:41:
+shadow:x:42:
+utmp:x:43:
+video:x:44:
+sasl:x:45:
+plugdev:x:46:
+staff:x:50:
+games:x:60:
+users:x:100:
+nogroup:x:65534:
+crontab:x:101:
+Debian-exim:x:102:
+foo:x:1000:
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/gshadow b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/gshadow
new file mode 100644
index 00000000..5042e581
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/gshadow
@@ -0,0 +1,42 @@
+root:*::
+daemon:*::
+bin:*::
+sys:*::
+adm:*::
+tty:*::
+disk:*::
+lp:*::
+mail:*::
+news:*::
+uucp:*::
+man:*::
+proxy:*::
+kmem:*::
+dialout:*::
+fax:*::
+voice:*::
+cdrom:*::
+floppy:*::
+tape:*::
+sudo:*::
+audio:*::
+dip:*::
+www-data:*::
+backup:*::
+operator:*::
+list:*::
+irc:*::
+src:*::
+gnats:*::
+shadow:*::
+utmp:*::
+video:*::
+sasl:*::
+plugdev:*::
+staff:*::
+games:*::
+users:*::
+nogroup:*::
+crontab:x::
+Debian-exim:x::
+foo:*::
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/login.defs b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/login.defs
new file mode 100644
index 00000000..84fb3cce
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/login.defs
@@ -0,0 +1,315 @@
+#
+# /etc/login.defs - Configuration control definitions for the login package.
+#
+# Three items must be defined:  MAIL_DIR, ENV_SUPATH, and ENV_PATH.
+# If unspecified, some arbitrary (and possibly incorrect) value will
+# be assumed.  All other items are optional - if not specified then
+# the described action or option will be inhibited.
+#
+# Comment lines (lines beginning with "#") and blank lines are ignored.
+#
+# Modified for Linux.  --marekm
+
+# REQUIRED for useradd/userdel/usermod
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define MAIL_DIR and MAIL_FILE,
+#   MAIL_DIR takes precedence.
+#
+#   Essentially:
+#      - MAIL_DIR defines the location of users mail spool files
+#        (for mbox use) by appending the username to MAIL_DIR as defined
+#        below.
+#      - MAIL_FILE defines the location of the users mail spool files as the
+#        fully-qualified filename obtained by prepending the user home
+#        directory before $MAIL_FILE
+#
+# NOTE: This is no more used for setting up users MAIL environment variable
+#       which is, starting from shadow 4.0.12-1 in Debian, entirely the
+#       job of the pam_mail PAM modules
+#       See default PAM configuration files provided for
+#       login, su, etc.
+#
+# This is a temporary situation: setting these variables will soon
+# move to /etc/default/useradd and the variables will then be
+# no more supported
+MAIL_DIR        /var/mail
+#MAIL_FILE      .mail
+
+#
+# Enable logging and display of /var/log/faillog login failure info.
+# This option conflicts with the pam_tally PAM module.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login failures are recorded.
+#
+# WARNING: Unknown usernames may become world readable. 
+# See #290803 and #298773 for details about how this could become a security
+# concern
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable "syslog" logging of su activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp and sg.
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, all su activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format something like "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login failures will be logged here in a utmp format
+# last, when invoked as lastb, will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then a "ps" will display the
+# command is "-su".  If not defined, then "ps" would display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV_PATH	PATH=/usr/local/bin:/usr/bin:/bin:/usr/games
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a "write" program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP to the group number and
+# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
+# TTYPERM to either 622 or 600.
+#
+# In Debian /usr/bin/bsd-write or similar programs are setgid tty
+# However, the default and recommended value for TTYPERM is still 0600
+# to not allow anyone to write to anyone else console or terminal
+
+# Users can still allow other people to write them by issuing 
+# the "mesg y" command.
+
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	UMASK		Default "umask" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+# 
+# UMASK usage is discouraged because it catches only some classes of user
+# entries to system, in fact only those made through login(1), while setting
+# umask in shell rc file will catch also logins through su, cron, ssh etc.
+#
+# At the same time, using shell rc to set umask won't catch entries which use
+# non-shell executables in place of login shell, like /usr/sbin/pppd for "ppp"
+# user and alike.
+#
+# Therefore the use of pam_umask is recommended (Debian package libpam-umask)
+# as the solution which catches all these cases on PAM-enabled systems.
+# 
+# This avoids the confusion created by having the umask set
+# in two different places -- in login.defs and shell rc files (i.e.
+# /etc/profile).
+#
+# For discussion, see #314539 and #248150 as well as the thread starting at
+# http://lists.debian.org/debian-devel/2005/06/msg01598.html
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+# 022 is the "historical" value in Debian for UMASK when it was used
+# 027, or even 077, could be considered better for privacy
+# There is no One True Answer here : each sysadmin must make up his/her
+# mind.
+#UMASK		022
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	99999
+PASS_MIN_DAYS	0
+PASS_WARN_AGE	7
+
+#
+# Min/max values for automatic uid selection in useradd
+#
+UID_MIN			 1000
+UID_MAX			60000
+
+#
+# Min/max values for automatic gid selection in groupadd
+#
+GID_MIN			  100
+GID_MAX			60000
+
+#
+# Max number of login retries if password is bad. This will most likely be
+# overriden by PAM, since the default pam_unix module has it's own built
+# in of 3 retries. However, this is a safe fallback in case you are using
+# an authentication module that does not enforce PAM_MAXTRIES.
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login
+#
+LOGIN_TIMEOUT		60
+
+#
+# Which fields may be changed by regular users using chfn - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+# 
+CHFN_RESTRICT		rwh
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default in no.
+#
+DEFAULT_HOME	yes
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# This enables userdel to remove user groups if no members exist.
+#
+# Other former uses of this variable such as setting the umask when
+# user==primary group are not used in PAM environments, thus in Debian
+#
+USERGROUPS_ENAB yes
+
+#
+# Instead of the real user shell, the program specified by this parameter
+# will be launched, although its visible name (argv[0]) will be the shell's.
+# The program may do whatever it wants (logging, additional authentification,
+# banner, ...) before running the actual shell.
+#
+# FAKE_SHELL /bin/fakeshell
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# upon these devices.
+#
+# This variable is used by login and su.
+#
+#CONSOLE	/etc/consoles
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in on the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in on the console.
+# How to do it is left as an exercise for the reader...
+#
+# This variable is used by login and su.
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# Only works if compiled with MD5_CRYPT defined:
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# This variable is used by chpasswd, gpasswd and newusers.
+#
+#MD5_CRYPT_ENAB	no
+
+################# OBSOLETED BY PAM ##############
+#						#
+# These options are now handled by PAM. Please	#
+# edit the appropriate file in /etc/pam.d/ to	#
+# enable the equivelants of them.
+#
+###############
+
+#MOTD_FILE
+#DIALUPS_CHECK_ENAB
+#LASTLOG_ENAB
+#MAIL_CHECK_ENAB
+#OBSCURE_CHECKS_ENAB
+#PORTTIME_CHECKS_ENAB
+#SU_WHEEL_ONLY
+#CRACKLIB_DICTPATH
+#PASS_CHANGE_TRIES
+#PASS_ALWAYS_WARN
+#ENVIRON_FILE
+#NOLOGINS_FILE
+#ISSUE_FILE
+#PASS_MIN_LEN
+#PASS_MAX_LEN
+#ULIMIT
+#ENV_HZ
+#CHFN_AUTH
+#CHSH_AUTH
+#FAIL_DELAY
+
+################# OBSOLETED #######################
+#						  #
+# These options are no more handled by shadow.    #
+#                                                 #
+# Shadow utilities will display a warning if they #
+# still appear.                                   #
+#                                                 #
+###################################################
+
+# CLOSE_SESSIONS
+# LOGIN_STRING
+# NO_PASSWORD_CONSOLE
+# QMAIL_DIR
+
+
+
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/passwd b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/passwd
new file mode 100644
index 00000000..dbb06b81
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/passwd
@@ -0,0 +1,20 @@
+root:x:0:0:root:/root:/bin/bash
+daemon:x:1:1:daemon:/usr/sbin:/bin/sh
+bin:x:2:2:bin:/bin:/bin/sh
+sys:x:3:3:sys:/dev:/bin/sh
+sync:x:4:65534:sync:/bin:/bin/sync
+games:x:5:60:games:/usr/games:/bin/sh
+man:x:6:12:man:/var/cache/man:/bin/sh
+lp:x:7:7:lp:/var/spool/lpd:/bin/sh
+mail:x:8:8:mail:/var/mail:/bin/sh
+news:x:9:9:news:/var/spool/news:/bin/sh
+uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
+proxy:x:13:13:proxy:/bin:/bin/sh
+www-data:x:33:33:www-data:/var/www:/bin/sh
+backup:x:34:34:backup:/var/backups:/bin/sh
+list:x:38:38:Mailing List Manager:/var/list:/bin/sh
+irc:x:39:39:ircd:/var/run/ircd:/bin/sh
+gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
+nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
+Debian-exim:x:102:102::/var/spool/exim4:/bin/false
+foo:x:1000:1000::/nonexistent:/bin/sh
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/shadow b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/shadow
new file mode 100644
index 00000000..2baad3b4
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/config/etc/shadow
@@ -0,0 +1,20 @@
+root:$1$NBLBLIXb$WUgojj1bNuxWEADQGt1m9.:12991:0:99999:7:::
+daemon:*:12977:0:99999:7:::
+bin:*:12977:0:99999:7:::
+sys:*:12977:0:99999:7:::
+sync:*:12977:0:99999:7:::
+games:*:12977:0:99999:7:::
+man:*:12977:0:99999:7:::
+lp:*:12977:0:99999:7:::
+mail:*:12977:0:99999:7:::
+news:*:12977:0:99999:7:::
+uucp:*:12977:0:99999:7:::
+proxy:*:12977:0:99999:7:::
+www-data:*:12977:0:99999:7:::
+backup:*:12977:0:99999:7:::
+list:*:12977:0:99999:7:::
+irc:*:12977:0:99999:7:::
+gnats:*:12977:0:99999:7:::
+nobody:*:12977:0:99999:7:::
+Debian-exim:!:12977:0:99999:7:::
+foo:!:12977:0:99999:7:::
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/data/pwunconv.err b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/data/pwunconv.err
new file mode 100644
index 00000000..44cd4fa6
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/data/pwunconv.err
@@ -0,0 +1,2 @@
+open FAILURE /etc/passwd 2 ...
+pwunconv: cannot open /etc/passwd
diff --git a/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/pwunconv.test b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/pwunconv.test
new file mode 100755
index 00000000..8212cf23
--- /dev/null
+++ b/tests/failures/pwunconv/02_pwunconv_open_passwd_failure/pwunconv.test
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+
+. ../../../common/config.sh
+. ../../../common/log.sh
+
+log_start "$0" "pwunconv report failures when it cannot open the passwd file"
+
+save_config
+
+# restore the files on exit
+trap 'log_status "$0" "FAILURE"; restore_config' 0
+
+change_config
+
+echo -n "Disable shadow passwords (pwunconv)..."
+LD_PRELOAD=../../../common/open_RDWR_failure.so FAILURE_PATH=/etc/passwd pwunconv 2>tmp/pwunconv.err && exit 1 || {
+	status=$?
+}
+echo "OK"
+
+echo -n "Check returned status ($status)..."
+test "$status" = "1"
+echo "OK"
+
+echo "pwunconv reported:"
+echo "======================================================================="
+cat tmp/pwunconv.err
+echo "======================================================================="
+echo -n "Check that there were a failure message..."
+diff -au data/pwunconv.err tmp/pwunconv.err
+echo "error message OK."
+rm -f tmp/pwunconv.err
+
+echo -n "Check the passwd file..."
+../../../common/compare_file.pl config/etc/passwd /etc/passwd
+echo "OK"
+echo -n "Check the group file..."
+../../../common/compare_file.pl config/etc/group /etc/group
+echo "OK"
+echo -n "Check the shadow file..."
+../../../common/compare_file.pl config/etc/shadow /etc/shadow
+echo "OK"
+echo -n "Check the gshadow file..."
+../../../common/compare_file.pl config/etc/gshadow /etc/gshadow
+echo "OK"
+
+log_status "$0" "SUCCESS"
+restore_config
+trap '' 0
+
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config.txt b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config.txt
new file mode 100644
index 00000000..e9e4bbed
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config.txt
@@ -0,0 +1 @@
+group foo, GID 1000
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/group b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/group
new file mode 100644
index 00000000..fecba0c4
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/group
@@ -0,0 +1,42 @@
+root:x:0:
+daemon:x:1:
+bin:x:2:
+sys:x:3:
+adm:x:4:
+tty:x:5:
+disk:x:6:
+lp:x:7:
+mail:x:8:
+news:x:9:
+uucp:x:10:
+man:x:12:
+proxy:x:13:
+kmem:x:15:
+dialout:x:20:
+fax:x:21:
+voice:x:22:
+cdrom:x:24:
+floppy:x:25:
+tape:x:26:
+sudo:x:27:
+audio:x:29:
+dip:x:30:
+www-data:x:33:
+backup:x:34:
+operator:x:37:
+list:x:38:
+irc:x:39:
+src:x:40:
+gnats:x:41:
+shadow:x:42:
+utmp:x:43:
+video:x:44:
+sasl:x:45:
+plugdev:x:46:
+staff:x:50:
+games:x:60:
+users:x:100:
+nogroup:x:65534:
+crontab:x:101:
+Debian-exim:x:102:
+foo:x:1000:
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/gshadow b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/gshadow
new file mode 100644
index 00000000..5042e581
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/gshadow
@@ -0,0 +1,42 @@
+root:*::
+daemon:*::
+bin:*::
+sys:*::
+adm:*::
+tty:*::
+disk:*::
+lp:*::
+mail:*::
+news:*::
+uucp:*::
+man:*::
+proxy:*::
+kmem:*::
+dialout:*::
+fax:*::
+voice:*::
+cdrom:*::
+floppy:*::
+tape:*::
+sudo:*::
+audio:*::
+dip:*::
+www-data:*::
+backup:*::
+operator:*::
+list:*::
+irc:*::
+src:*::
+gnats:*::
+shadow:*::
+utmp:*::
+video:*::
+sasl:*::
+plugdev:*::
+staff:*::
+games:*::
+users:*::
+nogroup:*::
+crontab:x::
+Debian-exim:x::
+foo:*::
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/login.defs b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/login.defs
new file mode 100644
index 00000000..84fb3cce
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/login.defs
@@ -0,0 +1,315 @@
+#
+# /etc/login.defs - Configuration control definitions for the login package.
+#
+# Three items must be defined:  MAIL_DIR, ENV_SUPATH, and ENV_PATH.
+# If unspecified, some arbitrary (and possibly incorrect) value will
+# be assumed.  All other items are optional - if not specified then
+# the described action or option will be inhibited.
+#
+# Comment lines (lines beginning with "#") and blank lines are ignored.
+#
+# Modified for Linux.  --marekm
+
+# REQUIRED for useradd/userdel/usermod
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define MAIL_DIR and MAIL_FILE,
+#   MAIL_DIR takes precedence.
+#
+#   Essentially:
+#      - MAIL_DIR defines the location of users mail spool files
+#        (for mbox use) by appending the username to MAIL_DIR as defined
+#        below.
+#      - MAIL_FILE defines the location of the users mail spool files as the
+#        fully-qualified filename obtained by prepending the user home
+#        directory before $MAIL_FILE
+#
+# NOTE: This is no more used for setting up users MAIL environment variable
+#       which is, starting from shadow 4.0.12-1 in Debian, entirely the
+#       job of the pam_mail PAM modules
+#       See default PAM configuration files provided for
+#       login, su, etc.
+#
+# This is a temporary situation: setting these variables will soon
+# move to /etc/default/useradd and the variables will then be
+# no more supported
+MAIL_DIR        /var/mail
+#MAIL_FILE      .mail
+
+#
+# Enable logging and display of /var/log/faillog login failure info.
+# This option conflicts with the pam_tally PAM module.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login failures are recorded.
+#
+# WARNING: Unknown usernames may become world readable. 
+# See #290803 and #298773 for details about how this could become a security
+# concern
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable "syslog" logging of su activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp and sg.
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, all su activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format something like "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login failures will be logged here in a utmp format
+# last, when invoked as lastb, will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then a "ps" will display the
+# command is "-su".  If not defined, then "ps" would display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV_PATH	PATH=/usr/local/bin:/usr/bin:/bin:/usr/games
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a "write" program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP to the group number and
+# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
+# TTYPERM to either 622 or 600.
+#
+# In Debian /usr/bin/bsd-write or similar programs are setgid tty
+# However, the default and recommended value for TTYPERM is still 0600
+# to not allow anyone to write to anyone else console or terminal
+
+# Users can still allow other people to write them by issuing 
+# the "mesg y" command.
+
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	UMASK		Default "umask" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+# 
+# UMASK usage is discouraged because it catches only some classes of user
+# entries to system, in fact only those made through login(1), while setting
+# umask in shell rc file will catch also logins through su, cron, ssh etc.
+#
+# At the same time, using shell rc to set umask won't catch entries which use
+# non-shell executables in place of login shell, like /usr/sbin/pppd for "ppp"
+# user and alike.
+#
+# Therefore the use of pam_umask is recommended (Debian package libpam-umask)
+# as the solution which catches all these cases on PAM-enabled systems.
+# 
+# This avoids the confusion created by having the umask set
+# in two different places -- in login.defs and shell rc files (i.e.
+# /etc/profile).
+#
+# For discussion, see #314539 and #248150 as well as the thread starting at
+# http://lists.debian.org/debian-devel/2005/06/msg01598.html
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+# 022 is the "historical" value in Debian for UMASK when it was used
+# 027, or even 077, could be considered better for privacy
+# There is no One True Answer here : each sysadmin must make up his/her
+# mind.
+#UMASK		022
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	99999
+PASS_MIN_DAYS	0
+PASS_WARN_AGE	7
+
+#
+# Min/max values for automatic uid selection in useradd
+#
+UID_MIN			 1000
+UID_MAX			60000
+
+#
+# Min/max values for automatic gid selection in groupadd
+#
+GID_MIN			  100
+GID_MAX			60000
+
+#
+# Max number of login retries if password is bad. This will most likely be
+# overriden by PAM, since the default pam_unix module has it's own built
+# in of 3 retries. However, this is a safe fallback in case you are using
+# an authentication module that does not enforce PAM_MAXTRIES.
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login
+#
+LOGIN_TIMEOUT		60
+
+#
+# Which fields may be changed by regular users using chfn - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+# 
+CHFN_RESTRICT		rwh
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default in no.
+#
+DEFAULT_HOME	yes
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# This enables userdel to remove user groups if no members exist.
+#
+# Other former uses of this variable such as setting the umask when
+# user==primary group are not used in PAM environments, thus in Debian
+#
+USERGROUPS_ENAB yes
+
+#
+# Instead of the real user shell, the program specified by this parameter
+# will be launched, although its visible name (argv[0]) will be the shell's.
+# The program may do whatever it wants (logging, additional authentification,
+# banner, ...) before running the actual shell.
+#
+# FAKE_SHELL /bin/fakeshell
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# upon these devices.
+#
+# This variable is used by login and su.
+#
+#CONSOLE	/etc/consoles
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in on the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in on the console.
+# How to do it is left as an exercise for the reader...
+#
+# This variable is used by login and su.
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# Only works if compiled with MD5_CRYPT defined:
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# This variable is used by chpasswd, gpasswd and newusers.
+#
+#MD5_CRYPT_ENAB	no
+
+################# OBSOLETED BY PAM ##############
+#						#
+# These options are now handled by PAM. Please	#
+# edit the appropriate file in /etc/pam.d/ to	#
+# enable the equivelants of them.
+#
+###############
+
+#MOTD_FILE
+#DIALUPS_CHECK_ENAB
+#LASTLOG_ENAB
+#MAIL_CHECK_ENAB
+#OBSCURE_CHECKS_ENAB
+#PORTTIME_CHECKS_ENAB
+#SU_WHEEL_ONLY
+#CRACKLIB_DICTPATH
+#PASS_CHANGE_TRIES
+#PASS_ALWAYS_WARN
+#ENVIRON_FILE
+#NOLOGINS_FILE
+#ISSUE_FILE
+#PASS_MIN_LEN
+#PASS_MAX_LEN
+#ULIMIT
+#ENV_HZ
+#CHFN_AUTH
+#CHSH_AUTH
+#FAIL_DELAY
+
+################# OBSOLETED #######################
+#						  #
+# These options are no more handled by shadow.    #
+#                                                 #
+# Shadow utilities will display a warning if they #
+# still appear.                                   #
+#                                                 #
+###################################################
+
+# CLOSE_SESSIONS
+# LOGIN_STRING
+# NO_PASSWORD_CONSOLE
+# QMAIL_DIR
+
+
+
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/passwd b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/passwd
new file mode 100644
index 00000000..dbb06b81
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/passwd
@@ -0,0 +1,20 @@
+root:x:0:0:root:/root:/bin/bash
+daemon:x:1:1:daemon:/usr/sbin:/bin/sh
+bin:x:2:2:bin:/bin:/bin/sh
+sys:x:3:3:sys:/dev:/bin/sh
+sync:x:4:65534:sync:/bin:/bin/sync
+games:x:5:60:games:/usr/games:/bin/sh
+man:x:6:12:man:/var/cache/man:/bin/sh
+lp:x:7:7:lp:/var/spool/lpd:/bin/sh
+mail:x:8:8:mail:/var/mail:/bin/sh
+news:x:9:9:news:/var/spool/news:/bin/sh
+uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
+proxy:x:13:13:proxy:/bin:/bin/sh
+www-data:x:33:33:www-data:/var/www:/bin/sh
+backup:x:34:34:backup:/var/backups:/bin/sh
+list:x:38:38:Mailing List Manager:/var/list:/bin/sh
+irc:x:39:39:ircd:/var/run/ircd:/bin/sh
+gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
+nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
+Debian-exim:x:102:102::/var/spool/exim4:/bin/false
+foo:x:1000:1000::/nonexistent:/bin/sh
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/shadow b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/shadow
new file mode 100644
index 00000000..2baad3b4
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/config/etc/shadow
@@ -0,0 +1,20 @@
+root:$1$NBLBLIXb$WUgojj1bNuxWEADQGt1m9.:12991:0:99999:7:::
+daemon:*:12977:0:99999:7:::
+bin:*:12977:0:99999:7:::
+sys:*:12977:0:99999:7:::
+sync:*:12977:0:99999:7:::
+games:*:12977:0:99999:7:::
+man:*:12977:0:99999:7:::
+lp:*:12977:0:99999:7:::
+mail:*:12977:0:99999:7:::
+news:*:12977:0:99999:7:::
+uucp:*:12977:0:99999:7:::
+proxy:*:12977:0:99999:7:::
+www-data:*:12977:0:99999:7:::
+backup:*:12977:0:99999:7:::
+list:*:12977:0:99999:7:::
+irc:*:12977:0:99999:7:::
+gnats:*:12977:0:99999:7:::
+nobody:*:12977:0:99999:7:::
+Debian-exim:!:12977:0:99999:7:::
+foo:!:12977:0:99999:7:::
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/data/pwunconv.err b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/data/pwunconv.err
new file mode 100644
index 00000000..a61ba357
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/data/pwunconv.err
@@ -0,0 +1,2 @@
+open FAILURE /etc/shadow 0 ...
+pwunconv: cannot open /etc/shadow
diff --git a/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/pwunconv.test b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/pwunconv.test
new file mode 100755
index 00000000..0c8f79fa
--- /dev/null
+++ b/tests/failures/pwunconv/03_pwunconv_open_shadow_failure/pwunconv.test
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+
+. ../../../common/config.sh
+. ../../../common/log.sh
+
+log_start "$0" "pwunconv report failures when it cannot open the shadow file"
+
+save_config
+
+# restore the files on exit
+trap 'log_status "$0" "FAILURE"; restore_config' 0
+
+change_config
+
+echo -n "Disable shadow passwords (pwunconv)..."
+LD_PRELOAD=../../../common/open_RDONLY_failure.so FAILURE_PATH=/etc/shadow pwunconv 2>tmp/pwunconv.err && exit 1 || {
+	status=$?
+}
+echo "OK"
+
+echo -n "Check returned status ($status)..."
+test "$status" = "1"
+echo "OK"
+
+echo "pwunconv reported:"
+echo "======================================================================="
+cat tmp/pwunconv.err
+echo "======================================================================="
+echo -n "Check that there were a failure message..."
+diff -au data/pwunconv.err tmp/pwunconv.err
+echo "error message OK."
+rm -f tmp/pwunconv.err
+
+echo -n "Check the passwd file..."
+../../../common/compare_file.pl config/etc/passwd /etc/passwd
+echo "OK"
+echo -n "Check the group file..."
+../../../common/compare_file.pl config/etc/group /etc/group
+echo "OK"
+echo -n "Check the shadow file..."
+../../../common/compare_file.pl config/etc/shadow /etc/shadow
+echo "OK"
+echo -n "Check the gshadow file..."
+../../../common/compare_file.pl config/etc/gshadow /etc/gshadow
+echo "OK"
+
+log_status "$0" "SUCCESS"
+restore_config
+trap '' 0
+
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config.txt b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config.txt
new file mode 100644
index 00000000..e9e4bbed
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config.txt
@@ -0,0 +1 @@
+group foo, GID 1000
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/group b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/group
new file mode 100644
index 00000000..fecba0c4
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/group
@@ -0,0 +1,42 @@
+root:x:0:
+daemon:x:1:
+bin:x:2:
+sys:x:3:
+adm:x:4:
+tty:x:5:
+disk:x:6:
+lp:x:7:
+mail:x:8:
+news:x:9:
+uucp:x:10:
+man:x:12:
+proxy:x:13:
+kmem:x:15:
+dialout:x:20:
+fax:x:21:
+voice:x:22:
+cdrom:x:24:
+floppy:x:25:
+tape:x:26:
+sudo:x:27:
+audio:x:29:
+dip:x:30:
+www-data:x:33:
+backup:x:34:
+operator:x:37:
+list:x:38:
+irc:x:39:
+src:x:40:
+gnats:x:41:
+shadow:x:42:
+utmp:x:43:
+video:x:44:
+sasl:x:45:
+plugdev:x:46:
+staff:x:50:
+games:x:60:
+users:x:100:
+nogroup:x:65534:
+crontab:x:101:
+Debian-exim:x:102:
+foo:x:1000:
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/gshadow b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/gshadow
new file mode 100644
index 00000000..5042e581
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/gshadow
@@ -0,0 +1,42 @@
+root:*::
+daemon:*::
+bin:*::
+sys:*::
+adm:*::
+tty:*::
+disk:*::
+lp:*::
+mail:*::
+news:*::
+uucp:*::
+man:*::
+proxy:*::
+kmem:*::
+dialout:*::
+fax:*::
+voice:*::
+cdrom:*::
+floppy:*::
+tape:*::
+sudo:*::
+audio:*::
+dip:*::
+www-data:*::
+backup:*::
+operator:*::
+list:*::
+irc:*::
+src:*::
+gnats:*::
+shadow:*::
+utmp:*::
+video:*::
+sasl:*::
+plugdev:*::
+staff:*::
+games:*::
+users:*::
+nogroup:*::
+crontab:x::
+Debian-exim:x::
+foo:*::
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/login.defs b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/login.defs
new file mode 100644
index 00000000..84fb3cce
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/login.defs
@@ -0,0 +1,315 @@
+#
+# /etc/login.defs - Configuration control definitions for the login package.
+#
+# Three items must be defined:  MAIL_DIR, ENV_SUPATH, and ENV_PATH.
+# If unspecified, some arbitrary (and possibly incorrect) value will
+# be assumed.  All other items are optional - if not specified then
+# the described action or option will be inhibited.
+#
+# Comment lines (lines beginning with "#") and blank lines are ignored.
+#
+# Modified for Linux.  --marekm
+
+# REQUIRED for useradd/userdel/usermod
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define MAIL_DIR and MAIL_FILE,
+#   MAIL_DIR takes precedence.
+#
+#   Essentially:
+#      - MAIL_DIR defines the location of users mail spool files
+#        (for mbox use) by appending the username to MAIL_DIR as defined
+#        below.
+#      - MAIL_FILE defines the location of the users mail spool files as the
+#        fully-qualified filename obtained by prepending the user home
+#        directory before $MAIL_FILE
+#
+# NOTE: This is no more used for setting up users MAIL environment variable
+#       which is, starting from shadow 4.0.12-1 in Debian, entirely the
+#       job of the pam_mail PAM modules
+#       See default PAM configuration files provided for
+#       login, su, etc.
+#
+# This is a temporary situation: setting these variables will soon
+# move to /etc/default/useradd and the variables will then be
+# no more supported
+MAIL_DIR        /var/mail
+#MAIL_FILE      .mail
+
+#
+# Enable logging and display of /var/log/faillog login failure info.
+# This option conflicts with the pam_tally PAM module.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login failures are recorded.
+#
+# WARNING: Unknown usernames may become world readable. 
+# See #290803 and #298773 for details about how this could become a security
+# concern
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable "syslog" logging of su activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp and sg.
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, all su activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format something like "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login failures will be logged here in a utmp format
+# last, when invoked as lastb, will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then a "ps" will display the
+# command is "-su".  If not defined, then "ps" would display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+ENV_PATH	PATH=/usr/local/bin:/usr/bin:/bin:/usr/games
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a "write" program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP to the group number and
+# TTYPERM to 0620.  Otherwise leave TTYGROUP commented out and assign
+# TTYPERM to either 622 or 600.
+#
+# In Debian /usr/bin/bsd-write or similar programs are setgid tty
+# However, the default and recommended value for TTYPERM is still 0600
+# to not allow anyone to write to anyone else console or terminal
+
+# Users can still allow other people to write them by issuing 
+# the "mesg y" command.
+
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	UMASK		Default "umask" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+# 
+# UMASK usage is discouraged because it catches only some classes of user
+# entries to system, in fact only those made through login(1), while setting
+# umask in shell rc file will catch also logins through su, cron, ssh etc.
+#
+# At the same time, using shell rc to set umask won't catch entries which use
+# non-shell executables in place of login shell, like /usr/sbin/pppd for "ppp"
+# user and alike.
+#
+# Therefore the use of pam_umask is recommended (Debian package libpam-umask)
+# as the solution which catches all these cases on PAM-enabled systems.
+# 
+# This avoids the confusion created by having the umask set
+# in two different places -- in login.defs and shell rc files (i.e.
+# /etc/profile).
+#
+# For discussion, see #314539 and #248150 as well as the thread starting at
+# http://lists.debian.org/debian-devel/2005/06/msg01598.html
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+# 022 is the "historical" value in Debian for UMASK when it was used
+# 027, or even 077, could be considered better for privacy
+# There is no One True Answer here : each sysadmin must make up his/her
+# mind.
+#UMASK		022
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	99999
+PASS_MIN_DAYS	0
+PASS_WARN_AGE	7
+
+#
+# Min/max values for automatic uid selection in useradd
+#
+UID_MIN			 1000
+UID_MAX			60000
+
+#
+# Min/max values for automatic gid selection in groupadd
+#
+GID_MIN			  100
+GID_MAX			60000
+
+#
+# Max number of login retries if password is bad. This will most likely be
+# overriden by PAM, since the default pam_unix module has it's own built
+# in of 3 retries. However, this is a safe fallback in case you are using
+# an authentication module that does not enforce PAM_MAXTRIES.
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login
+#
+LOGIN_TIMEOUT		60
+
+#
+# Which fields may be changed by regular users using chfn - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+# 
+CHFN_RESTRICT		rwh
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default in no.
+#
+DEFAULT_HOME	yes
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# This enables userdel to remove user groups if no members exist.
+#
+# Other former uses of this variable such as setting the umask when
+# user==primary group are not used in PAM environments, thus in Debian
+#
+USERGROUPS_ENAB yes
+
+#
+# Instead of the real user shell, the program specified by this parameter
+# will be launched, although its visible name (argv[0]) will be the shell's.
+# The program may do whatever it wants (logging, additional authentification,
+# banner, ...) before running the actual shell.
+#
+# FAKE_SHELL /bin/fakeshell
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# upon these devices.
+#
+# This variable is used by login and su.
+#
+#CONSOLE	/etc/consoles
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in on the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in on the console.
+# How to do it is left as an exercise for the reader...
+#
+# This variable is used by login and su.
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# Only works if compiled with MD5_CRYPT defined:
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# This variable is used by chpasswd, gpasswd and newusers.
+#
+#MD5_CRYPT_ENAB	no
+
+################# OBSOLETED BY PAM ##############
+#						#
+# These options are now handled by PAM. Please	#
+# edit the appropriate file in /etc/pam.d/ to	#
+# enable the equivelants of them.
+#
+###############
+
+#MOTD_FILE
+#DIALUPS_CHECK_ENAB
+#LASTLOG_ENAB
+#MAIL_CHECK_ENAB
+#OBSCURE_CHECKS_ENAB
+#PORTTIME_CHECKS_ENAB
+#SU_WHEEL_ONLY
+#CRACKLIB_DICTPATH
+#PASS_CHANGE_TRIES
+#PASS_ALWAYS_WARN
+#ENVIRON_FILE
+#NOLOGINS_FILE
+#ISSUE_FILE
+#PASS_MIN_LEN
+#PASS_MAX_LEN
+#ULIMIT
+#ENV_HZ
+#CHFN_AUTH
+#CHSH_AUTH
+#FAIL_DELAY
+
+################# OBSOLETED #######################
+#						  #
+# These options are no more handled by shadow.    #
+#                                                 #
+# Shadow utilities will display a warning if they #
+# still appear.                                   #
+#                                                 #
+###################################################
+
+# CLOSE_SESSIONS
+# LOGIN_STRING
+# NO_PASSWORD_CONSOLE
+# QMAIL_DIR
+
+
+
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/passwd b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/passwd
new file mode 100644
index 00000000..dbb06b81
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/passwd
@@ -0,0 +1,20 @@
+root:x:0:0:root:/root:/bin/bash
+daemon:x:1:1:daemon:/usr/sbin:/bin/sh
+bin:x:2:2:bin:/bin:/bin/sh
+sys:x:3:3:sys:/dev:/bin/sh
+sync:x:4:65534:sync:/bin:/bin/sync
+games:x:5:60:games:/usr/games:/bin/sh
+man:x:6:12:man:/var/cache/man:/bin/sh
+lp:x:7:7:lp:/var/spool/lpd:/bin/sh
+mail:x:8:8:mail:/var/mail:/bin/sh
+news:x:9:9:news:/var/spool/news:/bin/sh
+uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
+proxy:x:13:13:proxy:/bin:/bin/sh
+www-data:x:33:33:www-data:/var/www:/bin/sh
+backup:x:34:34:backup:/var/backups:/bin/sh
+list:x:38:38:Mailing List Manager:/var/list:/bin/sh
+irc:x:39:39:ircd:/var/run/ircd:/bin/sh
+gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
+nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
+Debian-exim:x:102:102::/var/spool/exim4:/bin/false
+foo:x:1000:1000::/nonexistent:/bin/sh
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/shadow b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/shadow
new file mode 100644
index 00000000..2baad3b4
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/config/etc/shadow
@@ -0,0 +1,20 @@
+root:$1$NBLBLIXb$WUgojj1bNuxWEADQGt1m9.:12991:0:99999:7:::
+daemon:*:12977:0:99999:7:::
+bin:*:12977:0:99999:7:::
+sys:*:12977:0:99999:7:::
+sync:*:12977:0:99999:7:::
+games:*:12977:0:99999:7:::
+man:*:12977:0:99999:7:::
+lp:*:12977:0:99999:7:::
+mail:*:12977:0:99999:7:::
+news:*:12977:0:99999:7:::
+uucp:*:12977:0:99999:7:::
+proxy:*:12977:0:99999:7:::
+www-data:*:12977:0:99999:7:::
+backup:*:12977:0:99999:7:::
+list:*:12977:0:99999:7:::
+irc:*:12977:0:99999:7:::
+gnats:*:12977:0:99999:7:::
+nobody:*:12977:0:99999:7:::
+Debian-exim:!:12977:0:99999:7:::
+foo:!:12977:0:99999:7:::
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/data/passwd b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/data/passwd
new file mode 100644
index 00000000..3416c55b
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/data/passwd
@@ -0,0 +1,20 @@
+root:$1$NBLBLIXb$WUgojj1bNuxWEADQGt1m9.:0:0:root:/root:/bin/bash
+daemon:*:1:1:daemon:/usr/sbin:/bin/sh
+bin:*:2:2:bin:/bin:/bin/sh
+sys:*:3:3:sys:/dev:/bin/sh
+sync:*:4:65534:sync:/bin:/bin/sync
+games:*:5:60:games:/usr/games:/bin/sh
+man:*:6:12:man:/var/cache/man:/bin/sh
+lp:*:7:7:lp:/var/spool/lpd:/bin/sh
+mail:*:8:8:mail:/var/mail:/bin/sh
+news:*:9:9:news:/var/spool/news:/bin/sh
+uucp:*:10:10:uucp:/var/spool/uucp:/bin/sh
+proxy:*:13:13:proxy:/bin:/bin/sh
+www-data:*:33:33:www-data:/var/www:/bin/sh
+backup:*:34:34:backup:/var/backups:/bin/sh
+list:*:38:38:Mailing List Manager:/var/list:/bin/sh
+irc:*:39:39:ircd:/var/run/ircd:/bin/sh
+gnats:*:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
+nobody:*:65534:65534:nobody:/nonexistent:/bin/sh
+Debian-exim:!:102:102::/var/spool/exim4:/bin/false
+foo:!:1000:1000::/nonexistent:/bin/sh
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/data/pwunconv.err b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/data/pwunconv.err
new file mode 100644
index 00000000..a8ecf491
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/data/pwunconv.err
@@ -0,0 +1,2 @@
+unlink FAILURE /etc/shadow
+pwunconv: cannot delete /etc/shadow
diff --git a/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/pwunconv.test b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/pwunconv.test
new file mode 100755
index 00000000..045719f6
--- /dev/null
+++ b/tests/failures/pwunconv/04_pwunconv_unlink_shadow_failure/pwunconv.test
@@ -0,0 +1,54 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+
+. ../../../common/config.sh
+. ../../../common/log.sh
+
+log_start "$0" "pwunconv report failures when it cannot remove the shadow file"
+
+save_config
+
+# restore the files on exit
+trap 'log_status "$0" "FAILURE"; restore_config' 0
+
+change_config
+
+echo -n "Disable shadow passwords (pwunconv)..."
+LD_PRELOAD=../../../common/unlink_failure.so FAILURE_PATH=/etc/shadow pwunconv 2>tmp/pwunconv.err && exit 1 || {
+	status=$?
+}
+echo "OK"
+
+echo -n "Check returned status ($status)..."
+test "$status" = "3"
+echo "OK"
+
+echo "pwunconv reported:"
+echo "======================================================================="
+cat tmp/pwunconv.err
+echo "======================================================================="
+echo -n "Check that there were a failure message..."
+diff -au data/pwunconv.err tmp/pwunconv.err
+echo "error message OK."
+rm -f tmp/pwunconv.err
+
+echo -n "Check the passwd file..."
+../../../common/compare_file.pl data/passwd /etc/passwd
+echo "OK"
+echo -n "Check the group file..."
+../../../common/compare_file.pl config/etc/group /etc/group
+echo "OK"
+echo -n "Check the shadow file..."
+../../../common/compare_file.pl config/etc/shadow /etc/shadow
+echo "OK"
+echo -n "Check the gshadow file..."
+../../../common/compare_file.pl config/etc/gshadow /etc/gshadow
+echo "OK"
+
+log_status "$0" "SUCCESS"
+restore_config
+trap '' 0
+