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* xfrm: SP lookups signature with markJamal Hadi Salim2010-02-221-5/+5
| | | | | | | | pass mark to all SP lookups to prepare them for when we add code to have them search. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: SA lookups signature with markJamal Hadi Salim2010-02-221-7/+10
| | | | | | | | pass mark to all SA lookups to prepare them for when we add code to have them search. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Flushing empty SPD generates false eventsJamal Hadi Salim2010-02-191-1/+5
| | | | | | | | | | | | | To see the effect make sure you have an empty SPD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush" You get prompt back in window2 and you see the flush event on window1. With this fix, you still get prompt on window1 but no event on window2. Thanks to Alexey Dobriyan for finding a bug in earlier version when using pfkey to do the flushing. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Flushing empty SAD generates false eventsJamal Hadi Salim2010-02-191-1/+4
| | | | | | | | | | | | | To see the effect make sure you have an empty SAD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm state flush" You get prompt back in window2 and you see the flush event on window1. With this fix, you still get prompt on window1 but no event on window2. Thanks to Alexey Dobriyan for finding a bug in earlier version when using pfkey to do the flushing. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Revert false event eliding commits.David S. Miller2010-02-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Alexey Dobriyan: -------------------- setkey now takes several seconds to run this simple script and it spits "recv: Resource temporarily unavailable" messages. #!/usr/sbin/setkey -f flush; spdflush; add A B ipcomp 44 -m tunnel -C deflate; add B A ipcomp 45 -m tunnel -C deflate; spdadd A B any -P in ipsec ipcomp/tunnel/192.168.1.2-192.168.1.3/use; spdadd B A any -P out ipsec ipcomp/tunnel/192.168.1.3-192.168.1.2/use; -------------------- Obviously applications want the events even when the table is empty. So we cannot make this behavioral change. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Flushing empty SPD generates false eventsjamal2010-02-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | Observed similar behavior on SPD as previouly seen on SAD flushing.. This fixes it. cheers, jamal commit 428b20432dc31bc2e01a94cd451cf5a2c00d2bf4 Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Thu Feb 11 05:49:38 2010 -0500 xfrm: Flushing empty SPD generates false events To see the effect make sure you have an empty SPD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Flushing empty SAD generates false eventsjamal2010-02-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To see the effect make sure you have an empty SAD. -On window1 "ip xfrm mon" -on window2 issue "ip xfrm state flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. I was tempted to return -ESRCH on window1 (which would show "RTNETLINK answers: No such process") but didnt want to change current behavior. cheers, jamal commit 5f3dd4a772326166e1bcf54acc2391df00dc7ab5 Author: Jamal Hadi Salim <hadi@cyberus.ca> Date: Thu Feb 11 04:41:36 2010 -0500 xfrm: Flushing empty SAD generates false events To see the effect make sure you have an empty SAD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm state flush" You get prompt back in window1 and you see the flush event on window2. With this fix, you still get prompt on window1 but no event on window2. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: validate attributesjamal2010-02-121-0/+4
| | | | | | | Some XFRM attributes were not going through basic validation. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: fix "ip xfrm state|policy count" misreportAlexey Dobriyan2010-01-231-6/+8
| | | | | | | | | "ip xfrm state|policy count" report SA/SP count from init_net, not from netns of caller process. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: Allow xfrm_user_net_exit to batch efficiently.Eric W. Biederman2009-12-031-8/+10
| | | | | | | | | | | xfrm.nlsk is provided by the xfrm_user module and is access via rcu from other parts of the xfrm code. Add xfrm.nlsk_stash a copy of xfrm.nlsk that will never be set to NULL. This allows the synchronize_net and netlink_kernel_release to be deferred until a whole batch of xfrm.nlsk sockets have been set to NULL. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Store aalg in xfrm_state with a user specified truncation lengthMartin Willi2009-11-251-8/+121
| | | | | | | | | | | | | | Adding a xfrm_state requires an authentication algorithm specified either as xfrm_algo or as xfrm_algo_auth with a specific truncation length. For compatibility, both attributes are dumped to userspace, and we also accept both attributes, but prefer the new syntax. If no truncation length is specified, or the authentication algorithm is specified using xfrm_algo, the truncation length from the algorithm description in the kernel is used. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Revert "xfrm: For 32/64 compatability wrt. xfrm_usersa_info"David S. Miller2009-01-201-9/+2
| | | | | | | | | | This reverts commit fc8c7dc1b29560c016a67a34ccff32a712b5aa86. As indicated by Jiri Klimes, this won't work. These numbers are not only used the size validation, they are also used to locate attributes sitting after the message. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: For 32/64 compatability wrt. xfrm_usersa_infoDavid S. Miller2009-01-141-2/+9
| | | | | | | | Reported by Jiri Klimes. Fix suggested by Patrick McHardy. Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: join error pathsIlpo Järvinen2008-12-141-10/+12
| | | | | Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: per-netns sysctlsAlexey Dobriyan2008-11-251-2/+2
| | | | | | | | | | | | | | | | | Make net.core.xfrm_aevent_etime net.core.xfrm_acq_expires net.core.xfrm_aevent_rseqth net.core.xfrm_larval_drop sysctls per-netns. For that make net_core_path[] global, register it to prevent two /proc/net/core antries and change initcall position -- xfrm_init() is called from fs_initcall, so this one should be fs_initcall at least. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: KM reporting in netnsAlexey Dobriyan2008-11-251-3/+2
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: pass netns with KM notificationsAlexey Dobriyan2008-11-251-2/+4
| | | | | | | | SA and SPD flush are executed with NULL SA and SPD respectively, for these cases pass netns explicitly from userspace socket. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: xfrm_user module in netnsAlexey Dobriyan2008-11-251-31/+45
| | | | | | | | | | Grab netns either from netlink socket, state or policy. SA and SPD flush are in init_net for now, this requires little attention, see below. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: per-netns NETLINK_XFRM socketAlexey Dobriyan2008-11-251-35/+73
| | | | | | | Stub senders to init_net's one temporarily. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: policy walking in netnsAlexey Dobriyan2008-11-251-1/+1
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: finding policy in netnsAlexey Dobriyan2008-11-251-4/+4
| | | | | | | Add netns parameter to xfrm_policy_bysel_ctx(), xfrm_policy_byidx(). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: policy flushing in netnsAlexey Dobriyan2008-11-251-1/+1
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: state walking in netnsAlexey Dobriyan2008-11-251-1/+1
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: finding states in netnsAlexey Dobriyan2008-11-251-2/+2
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: state lookup in netnsAlexey Dobriyan2008-11-251-6/+6
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: state flush in netnsAlexey Dobriyan2008-11-251-1/+1
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: add struct xfrm_policy::xp_netAlexey Dobriyan2008-11-251-2/+2
| | | | | | | | Again, to avoid complications with passing netns when not necessary. Again, ->xp_net is set-once field, once set it never changes. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netns xfrm: add struct xfrm_state::xs_netAlexey Dobriyan2008-11-251-2/+2
| | | | | | | | | | | | To avoid unnecessary complications with passing netns around. * set once, very early after allocating * once set, never changes For a while create every xfrm_state in init_net. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-11-061-1/+1
|\ | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/ath5k/base.c net/8021q/vlan_core.c
| * XFRM: copy_to_user_kmaddress() reports local address twiceArnaud Ebalard2008-11-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While adding support for MIGRATE/KMADDRESS in strongSwan (as specified in draft-ebalard-mext-pfkey-enhanced-migrate-00), Andreas Steffen noticed that XFRMA_KMADDRESS attribute passed to userland contains the local address twice (remote provides local address instead of remote one). This bug in copy_to_user_kmaddress() affects only key managers that use native XFRM interface (key managers that use PF_KEY are not affected). For the record, the bug was in the initial changeset I posted which added support for KMADDRESS (13c1d18931ebb5cf407cb348ef2cd6284d68902d 'xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)'). Signed-off-by: Arnaud Ebalard <arno@natisbad.org> Reported-by: Andreas Steffen <andreas.steffen@strongswan.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | xfrm: Notify changes in UDP encapsulation via netlinkMartin Willi2008-10-281-0/+52
|/ | | | | | | | Add new_mapping() implementation to the netlink xfrm_mgr to notify address/port changes detected in UDP encapsulated ESP packets. Signed-off-by: Martin Willi <martin@strongswan.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)Arnaud Ebalard2008-10-051-12/+45
| | | | | | | | | | Provides implementation of the enhancements of XFRM/PF_KEY MIGRATE mechanism specified in draft-ebalard-mext-pfkey-enhanced-migrate-00. Defines associated PF_KEY SADB_X_EXT_KMADDRESS extension and XFRM/netlink XFRMA_KMADDRESS attribute. Signed-off-by: Arnaud Ebalard <arno@natisbad.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* ipsec: Put dumpers on the dump listHerbert Xu2008-10-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | Herbert Xu came up with the idea and the original patch to make xfrm_state dump list contain also dumpers: As it is we go to extraordinary lengths to ensure that states don't go away while dumpers go to sleep. It's much easier if we just put the dumpers themselves on the list since they can't go away while they're going. I've also changed the order of addition on new states to prevent a never-ending dump. Timo Teräs improved the patch to apply cleanly to latest tree, modified iteration code to be more readable by using a common struct for entries in the list, implemented the same idea for xfrm_policy dumping and moved the af_key specific "last" entry caching to af_key. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Timo Teras <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm: Add a XFRM_STATE_AF_UNSPEC flag to xfrm_usersa_infoSteffen Klassert2008-07-101-2/+1
| | | | | | | | | | | | Add a XFRM_STATE_AF_UNSPEC flag to handle the AF_UNSPEC behavior for the selector family. Userspace applications can set this flag to leave the selector family of the xfrm_state unspecified. This can be used to to handle inter family tunnels if the selector is not set from userspace. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* xfrm_user: Remove zero length key checks.David S. Miller2008-05-211-11/+0
| | | | | | | | | | | The crypto layer will determine whether that is valid or not. Suggested by Herbert Xu, based upon a report and patch by Martin Willi. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
* Audit: collect sessionid in netlink messagesEric Paris2008-04-281-13/+28
| | | | | | | | | | Previously I added sessionid output to all audit messages where it was available but we still didn't know the sessionid of the sender of netlink messages. This patch adds that information to netlink messages so we can audit who sent netlink messages. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [IPSEC]: Fix catch-22 with algorithm IDs above 31Herbert Xu2008-04-221-0/+2
| | | | | | | | | | | | | | | | | | | | | | | As it stands it's impossible to use any authentication algorithms with an ID above 31 portably. It just happens to work on x86 but fails miserably on ppc64. The reason is that we're using a bit mask to check the algorithm ID but the mask is only 32 bits wide. After looking at how this is used in the field, I have concluded that in the long term we should phase out state matching by IDs because this is made superfluous by the reqid feature. For current applications, the best solution IMHO is to allow all algorithms when the bit masks are all ~0. The following patch does exactly that. This bug was identified by IBM when testing on the ppc64 platform using the NULL authentication algorithm which has an ID of 251. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Compilation warnings in xfrm_user.c.Denis V. Lunev2008-04-141-4/+4
| | | | | | | | | | | | | | | | When CONFIG_SECURITY_NETWORK_XFRM is undefined the following warnings appears: net/xfrm/xfrm_user.c: In function 'xfrm_add_pol_expire': net/xfrm/xfrm_user.c:1576: warning: 'ctx' may be used uninitialized in this function net/xfrm/xfrm_user.c: In function 'xfrm_get_policy': net/xfrm/xfrm_user.c:1340: warning: 'ctx' may be used uninitialized in this function (security_xfrm_policy_alloc is noop for the case). It seems that they are result of the commit 03e1ad7b5d871d4189b1da3125c2f12d1b5f7d0b ("LSM: Make the Labeled IPsec hooks more stack friendly") Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-04-141-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/ehea/ehea_main.c drivers/net/wireless/iwlwifi/Kconfig drivers/net/wireless/rt2x00/rt61pci.c net/ipv4/inet_timewait_sock.c net/ipv6/raw.c net/mac80211/ieee80211_sta.c
| * [XFRM]: xfrm_user: fix selector family initializationPatrick McHardy2008-04-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit df9dcb45 ([IPSEC]: Fix inter address family IPsec tunnel handling) broke openswan by removing the selector initialization for tunnel mode in case it is uninitialized. This patch restores the initialization, fixing openswan, but probably breaking inter-family tunnels again (unknown since the patch author disappeared). The correct thing for inter-family tunnels is probably to simply initialize the selector family explicitly. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | LSM: Make the Labeled IPsec hooks more stack friendlyPaul Moore2008-04-121-16/+17
| | | | | | | | | | | | | | | | | | | | | | | | The xfrm_get_policy() and xfrm_add_pol_expire() put some rather large structs on the stack to work around the LSM API. This patch attempts to fix that problem by changing the LSM API to require only the relevant "security" pointers instead of the entire SPD entry; we do this for all of the security_xfrm_policy*() functions to keep things consistent. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'master' of ↵David S. Miller2008-03-271-5/+2
|\ \ | |/ | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/usb/rndis_host.c drivers/net/wireless/b43/dma.c net/ipv6/ndisc.c
| * [IPSEC]: Fix inter address family IPsec tunnel handling.Kazunori MIYAZAWA2008-03-241-5/+2
| | | | | | | | | | Signed-off-by: Kazunori MIYAZAWA <kazunori@miyazawa.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [XFRM]: Speed up xfrm_policy and xfrm_state walkingTimo Teras2008-02-281-28/+43
|/ | | | | | | | | | | | | | | Change xfrm_policy and xfrm_state walking algorithm from O(n^2) to O(n). This is achieved adding the entries to one more list which is used solely for walking the entries. This also fixes some races where the dump can have duplicate or missing entries when the SPD/SADB is modified during an ongoing dump. Dumping SADB with 20000 entries using "time ip xfrm state" the sys time dropped from 1.012s to 0.080s. Signed-off-by: Timo Teras <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: Avoid bogus BUG() when throwing new policy away.YOSHIFUJI Hideaki2008-02-141-0/+1
| | | | | | | | | | From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> When we destory a new policy entry, we need to tell xfrm_policy_destroy() explicitly that the entry is not alive yet. Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Add support for combined mode algorithmsHerbert Xu2008-01-311-3/+68
| | | | | | | | | | | | | | | | This patch adds support for combined mode algorithms with GCM being the first algorithm supported. Combined mode algorithms can be added through the xfrm_user interface using the new algorithm payload type XFRMA_ALG_AEAD. Each algorithms is identified by its name and the ICV length. For the purposes of matching algorithms in xfrm_tmpl structures, combined mode algorithms occupy the same name space as encryption algorithms. This is in line with how they are negotiated using IKE. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETNS]: Consolidate kernel netlink socket destruction.Denis V. Lunev2008-01-281-1/+1
| | | | | | | | | | Create a specific helper for netlink kernel socket disposal. This just let the code look better and provides a ground for proper disposal inside a namespace. Signed-off-by: Denis V. Lunev <den@openvz.org> Tested-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM] xfrm_policy_destroy: Rename and relative fixes.WANG Cong2008-01-281-1/+1
| | | | | | | | | | | | | | | Since __xfrm_policy_destroy is used to destory the resources allocated by xfrm_policy_alloc. So using the name __xfrm_policy_destroy is not correspond with xfrm_policy_alloc. Rename it to xfrm_policy_destroy. And along with some instances that call xfrm_policy_alloc but not using xfrm_policy_destroy to destroy the resource, fix them. Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [IPSEC]: Make x->lastused an unsigned longHerbert Xu2008-01-281-2/+2
| | | | | | | | | | | | | | Currently x->lastused is u64 which means that it cannot be read/written atomically on all architectures. David Miller observed that the value stored in it is only an unsigned long which is always atomic. So based on his suggestion this patch changes the internal representation from u64 to unsigned long while the user-interface still refers to it as u64. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [XFRM]: xfrm_algo_clone() allocates too much memoryEric Dumazet2008-01-081-11/+6
| | | | | | | | | | | | | alg_key_len is the length in bits of the key, not in bytes. Best way to fix this is to move alg_len() function from net/xfrm/xfrm_user.c to include/net/xfrm.h, and to use it in xfrm_algo_clone() alg_len() is renamed to xfrm_alg_len() because of its global exposition. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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