[Dovecot] Shared folders, please help.!

[Johan Hendriks]

2010/10/15 Timo Sirainen <tss at iki.fi>:
> On Fri, 2010-10-15 at 13:47 +0100, Timo Sirainen wrote:
>
>> But you should have seen in logs at login time stuff like:
>>
>> Debug: Namespace : type=shared, prefix=shared/%d/%n/, sep=/, inbox=no, hidden=no, list=children, subscriptions=no location=maildir:%h/Maildir:INDEX=~/shared-index
>
> I added some more stuff that gets logged now with mail_debug=yes and
> could be helpful in figuring out why shared mailboxes don't work:
>
> http://hg.dovecot.org/dovecot-2.0/rev/b277b71fb57f
> http://hg.dovecot.org/dovecot-2.0/rev/b0e4edc4d79a
>
>
>

Sorry for the late reply.
Was not in the office.

Dovecot used /var.log/debug as the debug logfile.
I  edit the dovecot.conf file, and now it logs all to /var/log/maillog.

i did the following again,
telnet 192.168.50.200 143
Trying 192.168.50.200...
Connected to beasty.double-l.local.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
a login johan at domain.com johanpass
a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT
IDLE CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE
QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS
QUOTA ACL RIGHTS=texk] Logged in
b GETACL
b BAD Error in IMAP command GETACL: Missing arguments
b GETACL INBOX
* ACL "INBOX" "hans at domain.com" lr "johan at domain.com" lrwstipekxacd
b OK Getacl completed.
^]
telnet> quit
Connection closed.
beasty log # telnet 192.168.50.200 143
Trying 192.168.50.200...
Connected to beasty.double-l.local.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
a login hans at domain.com hanspass
a OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE
SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT
IDLE CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE
QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS
QUOTA ACL RIGHTS=texk] Logged in
b list "" shared/*
b OK List completed.
c list "" shared/domain.com/johan/*
c OK List completed.
d select shared/domain.com/johan/INBOX
d NO Mailbox doesn't exist: shared/domain.com/johan/INBOX
^]
telnet> quit
Connection closed.


this is what i get in the logs.

Oct 18 14:22:29 auth: Debug: Loading modules from directory:
/usr/local/lib/dovecot/auth
Oct 18 14:22:29 auth: Debug: auth client connected (pid=98928)
Oct 18 14:22:49 auth: Debug: client in:
AUTH	1	PLAIN	service=imap	secured	lip=192.168.50.200	rip=192.168.50.200	lport=143	rport=33182	resp=AGpvaGFuQGRvbWFpbi5jb20Aam9oYW5wYXNz
Oct 18 14:22:49 auth: Debug: Loading modules from directory:
/usr/local/lib/dovecot/auth
Oct 18 14:22:49 auth: Info: mysql: Connected to localhost (postfix)
Oct 18 14:22:49 auth: Debug: sql(johan at domain.com,192.168.50.200):
query: select password from mailbox where username =
'johan at domain.com' and active = '1'
Oct 18 14:22:49 auth: Debug: client out: OK	1	user=johan at domain.com
Oct 18 14:22:49 auth: Debug: master in:
REQUEST	1	98928	1	48479282aecab3b1b82306981b2c7b1b
Oct 18 14:22:49 auth: Debug: sql(johan at domain.com,192.168.50.200):
select maildir, concat('*:messages=50000:bytes=', quota) as quota_rule
from mailbox where username = 'johan at domain.com' and active = '1'
Oct 18 14:22:49 auth: Debug: master out:
USER	1	johan at domain.com	maildir=domain.com/johan/	quota_rule=*:messages=50000:bytes=1024000000
Oct 18 14:22:49 imap-login: Info: Login: user=<johan at domain.com>,
method=PLAIN, rip=192.168.50.200, lip=192.168.50.200, mpid=99091,
secured
Oct 18 14:22:49 imap: Debug: Loading modules from directory:
/usr/local/lib/dovecot
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib01_acl_plugin.so
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib02_imap_acl_plugin.so
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib10_quota_plugin.so
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib11_imap_quota_plugin.so
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib15_notify_plugin.so
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib20_autocreate_plugin.so
Oct 18 14:22:49 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib20_mail_log_plugin.so
Oct 18 14:22:49 imap: Debug: Added userdb setting:
plugin/maildir=domain.com/johan/
Oct 18 14:22:49 imap: Debug: Added userdb setting:
plugin/quota_rule=*:messages=50000:bytes=1024000000
Oct 18 14:22:49 imap(johan at domain.com): Debug: Effective uid=1004,
gid=1004, home=
Oct 18 14:22:49 imap(johan at domain.com): Debug: Quota root: name=
backend=dict args=:proxy::quotadict
Oct 18 14:22:49 imap(johan at domain.com): Debug: Quota rule: root=
mailbox=* bytes=1024000000 messages=50000
Oct 18 14:22:49 imap(johan at domain.com): Debug: Quota warning:
bytes=972800000 (95%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 95
Oct 18 14:22:49 imap(johan at domain.com): Debug: Quota warning:
bytes=819200000 (80%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 80
Oct 18 14:22:49 imap(johan at domain.com): Debug: dict quota:
user=johan at domain.com, uri=proxy::quotadict, noenforcing=0
Oct 18 14:22:49 imap(johan at domain.com): Debug: Namespace :
type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes,
subscriptions=yes location=maildir:/usr/local/virtual/domain.com/johan
Oct 18 14:22:49 imap(johan at domain.com): Debug: maildir++:
root=/usr/local/virtual/domain.com/johan, index=, control=,
inbox=/usr/local/virtual/domain.com/johan
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl: acl username =
johan at domain.com
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl: owner = 1
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:22:49 imap(johan at domain.com): Debug: Namespace :
type=shared, prefix=shared/%d/%u/, sep=/, inbox=no, hidden=no,
list=children, subscriptions=no
location=maildir:/usr/local/virtual/%d/%n/shared/:INDEX=/shared/%d/%n
Oct 18 14:22:49 imap(johan at domain.com): Debug: shared:
root=/var/run/dovecot, index=, control=, inbox=
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl: acl username =
johan at domain.com
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl: owner = 0
Oct 18 14:22:49 imap(johan at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:22:49 imap(johan at domain.com): Debug: Namespace : Using
permissions from /usr/local/virtual/domain.com/johan: mode=0700 gid=-1
Oct 18 14:23:28 imap(johan at domain.com): Debug: acl vfile: reading file
/usr/local/virtual/domain.com/johan/dovecot-acl
Oct 18 14:23:28 imap(johan at domain.com): Debug: acl vfile: reading file
/usr/local/virtual/domain.com/johan/dovecot-acl
Oct 18 14:25:45 imap(johan at domain.com): Info: Connection closed bytes=26/455
Oct 18 14:25:48 auth: Debug: Loading modules from directory:
/usr/local/lib/dovecot/auth
Oct 18 14:25:48 auth: Debug: auth client connected (pid=629)
Oct 18 14:26:00 auth: Debug: client in:
AUTH	1	PLAIN	service=imap	secured	lip=192.168.50.200	rip=192.168.50.200	lport=143	rport=34472	resp=AGhhbnNAZG9tYWluLmNvbQBoYW5zcGFzcw==
Oct 18 14:26:00 auth: Debug: Loading modules from directory:
/usr/local/lib/dovecot/auth
Oct 18 14:26:00 auth: Info: mysql: Connected to localhost (postfix)
Oct 18 14:26:00 auth: Debug: sql(hans at domain.com,192.168.50.200):
query: select password from mailbox where username = 'hans at domain.com'
and active = '1'
Oct 18 14:26:00 auth: Debug: client out: OK	1	user=hans at domain.com
Oct 18 14:26:00 auth: Debug: master in:
REQUEST	1	629	1	4b4d31b52569246bde5ab9457e5fa36d
Oct 18 14:26:00 auth: Debug: sql(hans at domain.com,192.168.50.200):
select maildir, concat('*:messages=50000:bytes=', quota) as quota_rule
from mailbox where username = 'hans at domain.com' and active = '1'
Oct 18 14:26:00 auth: Debug: master out:
USER	1	hans at domain.com	maildir=domain.com/hans/	quota_rule=*:messages=50000:bytes=102400000
Oct 18 14:26:00 imap-login: Info: Login: user=<hans at domain.com>,
method=PLAIN, rip=192.168.50.200, lip=192.168.50.200, mpid=730,
secured
Oct 18 14:26:00 imap: Debug: Loading modules from directory:
/usr/local/lib/dovecot
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib01_acl_plugin.so
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib02_imap_acl_plugin.so
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib10_quota_plugin.so
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib11_imap_quota_plugin.so
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib15_notify_plugin.so
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib20_autocreate_plugin.so
Oct 18 14:26:00 imap: Debug: Module loaded:
/usr/local/lib/dovecot/lib20_mail_log_plugin.so
Oct 18 14:26:00 imap: Debug: Added userdb setting:
plugin/maildir=domain.com/hans/
Oct 18 14:26:00 imap: Debug: Added userdb setting:
plugin/quota_rule=*:messages=50000:bytes=102400000
Oct 18 14:26:00 imap(hans at domain.com): Debug: Effective uid=1004,
gid=1004, home=
Oct 18 14:26:00 imap(hans at domain.com): Debug: Quota root: name=
backend=dict args=:proxy::quotadict
Oct 18 14:26:00 imap(hans at domain.com): Debug: Quota rule: root=
mailbox=* bytes=102400000 messages=50000
Oct 18 14:26:00 imap(hans at domain.com): Debug: Quota warning:
bytes=97280000 (95%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 95
Oct 18 14:26:00 imap(hans at domain.com): Debug: Quota warning:
bytes=81920000 (80%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 80
Oct 18 14:26:00 imap(hans at domain.com): Debug: dict quota:
user=hans at domain.com, uri=proxy::quotadict, noenforcing=0
Oct 18 14:26:00 imap(hans at domain.com): Debug: Namespace :
type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes,
subscriptions=yes location=maildir:/usr/local/virtual/domain.com/hans
Oct 18 14:26:00 imap(hans at domain.com): Debug: maildir++:
root=/usr/local/virtual/domain.com/hans, index=, control=,
inbox=/usr/local/virtual/domain.com/hans
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl: acl username =
hans at domain.com
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl: owner = 1
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:26:00 imap(hans at domain.com): Debug: Namespace : type=shared,
prefix=shared/%d/%u/, sep=/, inbox=no, hidden=no, list=children,
subscriptions=no
location=maildir:/usr/local/virtual/%d/%n/shared/:INDEX=/shared/%d/%n
Oct 18 14:26:00 imap(hans at domain.com): Debug: shared:
root=/var/run/dovecot, index=, control=, inbox=
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl: acl username =
hans at domain.com
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl: owner = 0
Oct 18 14:26:00 imap(hans at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:26:00 imap(hans at domain.com): Debug: Namespace : Using
permissions from /usr/local/virtual/domain.com/hans: mode=0700 gid=-1
Oct 18 14:26:06 beasty postfix/qmgr[13582]: 18D833F494:
from=<johan at schavemaker.com>, size=324, nrcpt=1 (queue active)
Oct 18 14:26:06 lda: Debug: Loading modules from directory:
/usr/local/lib/dovecot
Oct 18 14:26:06 lda: Debug: Module loaded:
/usr/local/lib/dovecot/lib01_acl_plugin.so
Oct 18 14:26:06 lda: Debug: Module loaded:
/usr/local/lib/dovecot/lib10_quota_plugin.so
Oct 18 14:26:06 lda: Debug: Module loaded:
/usr/local/lib/dovecot/lib15_notify_plugin.so
Oct 18 14:26:06 lda: Debug: Module loaded:
/usr/local/lib/dovecot/lib20_mail_log_plugin.so
Oct 18 14:26:06 auth: Debug: master in: USER	1	johan at domain.com	service=lda
Oct 18 14:26:06 auth: Debug: sql(johan at domain.com): select maildir,
concat('*:messages=50000:bytes=', quota) as quota_rule from mailbox
where username = 'johan at domain.com' and active = '1'
Oct 18 14:26:06 auth: Debug: master out:
USER	1	johan at domain.com	maildir=domain.com/johan/	quota_rule=*:messages=50000:bytes=1024000000
Oct 18 14:26:06 lda: Debug: auth input: johan at domain.com
maildir=domain.com/johan/ quota_rule=*:messages=50000:bytes=1024000000
Oct 18 14:26:06 lda: Debug: Added userdb setting:
plugin/maildir=domain.com/johan/
Oct 18 14:26:06 lda: Debug: Added userdb setting:
plugin/quota_rule=*:messages=50000:bytes=1024000000
Oct 18 14:26:06 lda(johan at domain.com): Debug: Effective uid=1004,
gid=1004, home=
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota root: name=
backend=dict args=:proxy::quotadict
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota rule: root=
mailbox=* bytes=1024000000 messages=50000
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota warning:
bytes=972800000 (95%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 95
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota warning:
bytes=819200000 (80%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 80
Oct 18 14:26:06 lda(johan at domain.com): Debug: dict quota:
user=johan at domain.com, uri=proxy::quotadict, noenforcing=0
Oct 18 14:26:06 lda(johan at domain.com): Debug: Namespace :
type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes,
subscriptions=yes location=maildir:/usr/local/virtual/domain.com/johan
Oct 18 14:26:06 lda(johan at domain.com): Debug: maildir++:
root=/usr/local/virtual/domain.com/johan, index=, control=,
inbox=/usr/local/virtual/domain.com/johan
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl: acl username =
johan at domain.com
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl: owner = 1
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:26:06 lda(johan at domain.com): Debug: Namespace : type=shared,
prefix=shared/%d/%u/, sep=/, inbox=no, hidden=no, list=children,
subscriptions=no
location=maildir:/usr/local/virtual/%d/%n/shared/:INDEX=/shared/%d/%n
Oct 18 14:26:06 lda(johan at domain.com): Debug: shared:
root=/var/run/dovecot, index=, control=, inbox=
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl: acl username =
johan at domain.com
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl: owner = 0
Oct 18 14:26:06 lda(johan at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota root: name=
backend=dict args=:proxy::quotadict
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota warning: bytes=0
(95%) messages=0 reverse=no command=/usr/local/bin/quota-warning.sh 95
Oct 18 14:26:06 lda(johan at domain.com): Debug: Quota warning: bytes=0
(80%) messages=0 reverse=no command=/usr/local/bin/quota-warning.sh 80
Oct 18 14:26:06 lda(johan at domain.com): Debug: dict quota:
user=johan at domain.com, uri=proxy::quotadict, noenforcing=0
Oct 18 14:26:06 lda(johan at domain.com): Debug: none: root=, index=,
control=, inbox=
Oct 18 14:26:06 dict: Info: mysql: Connected to localhost (postfix)
Oct 18 14:26:06 lda(johan at domain.com): Info: save: box=INBOX, uid=2,
msgid=<20101018121703.18D833F494 at mailserver.schavemaker.com>, size=384
Oct 18 14:26:06 lda(johan at domain.com): Info:
msgid=<20101018121703.18D833F494 at mailserver.schavemaker.com>: saved
mail to INBOX
Oct 18 14:26:06 beasty postfix/pipe[787]: 18D833F494:
to=<johan at domain.com>, relay=dovecot, delay=544,
delays=544/0.02/0/0.03, dsn=2.0.0, status=sent (delivered via dovecot
service)
Oct 18 14:26:06 beasty postfix/qmgr[13582]: 18D833F494: removed
Oct 18 14:27:51 dict: Error: sql dict iterate: Invalid/unmapped path:
shared/shared-boxes/anyone/
Oct 18 14:27:51 dict: Info: mysql: Connected to localhost (postfix)
Oct 18 14:27:51 imap(hans at domain.com): Debug: Quota root: name=
backend=dict args=:proxy::quotadict
Oct 18 14:27:51 imap(hans at domain.com): Debug: Quota rule: root=
mailbox=* bytes=102400000 messages=50000
Oct 18 14:27:51 imap(hans at domain.com): Debug: Quota warning:
bytes=97280000 (95%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 95
Oct 18 14:27:51 imap(hans at domain.com): Debug: Quota warning:
bytes=81920000 (80%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 80
Oct 18 14:27:51 imap(hans at domain.com): Debug: dict quota:
user=johan at domain.com, uri=proxy::quotadict, noenforcing=0
Oct 18 14:27:51 imap(hans at domain.com): Debug: maildir++:
root=/usr/local/virtual/domain.com/johan/shared,
index=/shared/domain.com/johan, control=,
inbox=/usr/local/virtual/domain.com/johan/shared
Oct 18 14:27:51 imap(hans at domain.com): Debug: Namespace
shared/domain.com/johan at domain.com/: Permission lookup failed from
/usr/local/virtual/domain.com/johan/shared
Oct 18 14:27:51 imap(hans at domain.com): Debug: Namespace
shared/domain.com/johan at domain.com/: Using permissions from
/usr/local/virtual/domain.com/johan/shared: mode=0700 gid=-1
Oct 18 14:27:51 imap(hans at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:27:51 imap(hans at domain.com): Debug: acl: acl username =
hans at domain.com
Oct 18 14:27:51 imap(hans at domain.com): Debug: acl: owner = 0
Oct 18 14:27:51 imap(hans at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:27:51 imap(hans at domain.com): Debug: acl vfile: file
/usr/local/virtual/domain.com/johan/shared/dovecot-acl not found
Oct 18 14:28:54 imap(hans at domain.com): Debug: Quota root: name=
backend=dict args=:proxy::quotadict
Oct 18 14:28:54 imap(hans at domain.com): Debug: Quota rule: root=
mailbox=* bytes=102400000 messages=50000
Oct 18 14:28:54 imap(hans at domain.com): Debug: Quota warning:
bytes=97280000 (95%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 95
Oct 18 14:28:54 imap(hans at domain.com): Debug: Quota warning:
bytes=81920000 (80%) messages=0 reverse=no
command=/usr/local/bin/quota-warning.sh 80
Oct 18 14:28:54 imap(hans at domain.com): Debug: dict quota: user=johan,
uri=proxy::quotadict, noenforcing=0
Oct 18 14:28:54 imap(hans at domain.com): Debug: maildir++:
root=/usr/local/virtual//johan/shared, index=/shared//johan, control=,
inbox=/usr/local/virtual//johan/shared
Oct 18 14:28:54 imap(hans at domain.com): Debug: acl: initializing
backend with data: vfile
Oct 18 14:28:54 imap(hans at domain.com): Debug: acl: acl username =
hans at domain.com
Oct 18 14:28:54 imap(hans at domain.com): Debug: acl: owner = 0
Oct 18 14:28:54 imap(hans at domain.com): Debug: acl vfile: Global ACL
directory: (null)
Oct 18 14:28:54 imap(hans at domain.com): Debug: acl vfile: file
/usr/local/virtual//johan/shared/dovecot-acl not found
Oct 18 14:29:04 imap(hans at domain.com): Info: Connection closed bytes=97/410


regards,
Johan Hendriks