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* rpcrdma: Merge svcrdma and xprtrdma modules into oneChuck Lever2015-06-041-20/+8
| | | | | | | | | | | | | | | | | | | | | | | Bi-directional RPC support means code in svcrdma.ko invokes a bit of code in xprtrdma.ko, and vice versa. To avoid loader/linker loops, merge the server and client side modules together into a single module. When backchannel capabilities are added, the combined module will register all needed transport capabilities so that Upper Layer consumers automatically have everything needed to create a bi-directional transport connection. Module aliases are added for backwards compatibility with user space, which still may expect svcrdma.ko or xprtrdma.ko to be present. This commit reverts commit 2e8c12e1b765 ("xprtrdma: add separate Kconfig options for NFSoRDMA client and server support") and provides a single CONFIG option for enabling the new module. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* kernel: conditionally support non-root users, groups and capabilitiesIulia Manda2015-04-151-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a lot of embedded systems that run most or all of their functionality in init, running as root:root. For these systems, supporting multiple users is not necessary. This patch adds a new symbol, CONFIG_MULTIUSER, that makes support for non-root users, non-root groups, and capabilities optional. It is enabled under CONFIG_EXPERT menu. When this symbol is not defined, UID and GID are zero in any possible case and processes always have all capabilities. The following syscalls are compiled out: setuid, setregid, setgid, setreuid, setresuid, getresuid, setresgid, getresgid, setgroups, getgroups, setfsuid, setfsgid, capget, capset. Also, groups.c is compiled out completely. In kernel/capability.c, capable function was moved in order to avoid adding two ifdef blocks. This change saves about 25 KB on a defconfig build. The most minimal kernels have total text sizes in the high hundreds of kB rather than low MB. (The 25k goes down a bit with allnoconfig, but not that much. The kernel was booted in Qemu. All the common functionalities work. Adding users/groups is not possible, failing with -ENOSYS. Bloat-o-meter output: add/remove: 7/87 grow/shrink: 19/397 up/down: 1675/-26325 (-24650) [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Iulia Manda <iulia.manda21@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sunrpc: add debugfs file for displaying client rpc_task queueJeff Layton2014-11-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | It's possible to get a dump of the RPC task queue by writing a value to /proc/sys/sunrpc/rpc_debug. If you write any value to that file, you get a dump of the RPC client task list into the log buffer. This is a rather inconvenient interface however, and makes it hard to get immediate info about the task queue. Add a new directory hierarchy under debugfs: sunrpc/ rpc_clnt/ <clientid>/ Within each clientid directory we create a new "tasks" file that will dump info similar to what shows up in the log buffer, but with a few small differences -- we avoid printing raw kernel addresses in favor of symbolic names and the XID is also displayed. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* xprtrdma: add separate Kconfig options for NFSoRDMA client and server supportJeff Layton2014-03-281-13/+26
| | | | | | | | | There are two entirely separate modules under xprtrdma/ and there's no reason that enabling one should automatically enable the other. Add config options for each one so they can be enabled/disabled separately. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* Merge branch 'rpcsec_gss-from_cel' into linux-nextTrond Myklebust2013-04-231-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * rpcsec_gss-from_cel: (21 commits) NFS: Retry SETCLIENTID with AUTH_SYS instead of AUTH_NONE NFSv4: Don't clear the machine cred when client establish returns EACCES NFSv4: Fix issues in nfs4_discover_server_trunking NFSv4: Fix the fallback to AUTH_NULL if krb5i is not available NFS: Use server-recommended security flavor by default (NFSv3) SUNRPC: Don't recognize RPC_AUTH_MAXFLAVOR NFS: Use "krb5i" to establish NFSv4 state whenever possible NFS: Try AUTH_UNIX when PUTROOTFH gets NFS4ERR_WRONGSEC NFS: Use static list of security flavors during root FH lookup recovery NFS: Avoid PUTROOTFH when managing leases NFS: Clean up nfs4_proc_get_rootfh NFS: Handle missing rpc.gssd when looking up root FH SUNRPC: Remove EXPORT_SYMBOL_GPL() from GSS mech switch SUNRPC: Make gss_mech_get() static SUNRPC: Refactor nfsd4_do_encode_secinfo() SUNRPC: Consider qop when looking up pseudoflavors SUNRPC: Load GSS kernel module by OID SUNRPC: Introduce rpcauth_get_pseudoflavor() SUNRPC: Define rpcsec_gss_info structure NFS: Remove unneeded forward declaration ...
| * SUNRPC: Load GSS kernel module by OIDChuck Lever2013-03-291-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current GSS mech switch can find and load GSS pseudoflavor modules by name ("krb5") or pseudoflavor number ("390003"), but cannot find GSS modules by GSS tuple: [ "1.2.840.113554.1.2.2", GSS_C_QOP_DEFAULT, RPC_GSS_SVC_NONE ] This is important when dealing with a SECINFO request. A SECINFO reply contains a list of flavors the server supports for the requested export, but GSS flavors also have a GSS tuple that maps to a pseudoflavor (like 390003 for krb5). If the GSS module that supports the OID in the tuple is not loaded, our client is not able to load that module dynamically to support that pseudoflavor. Add a way for the GSS mech switch to load GSS pseudoflavor support by OID before searching for the pseudoflavor that matches the OID and service. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | sunrpc: drop "select NETVM"Paul Bolle2013-04-051-1/+0
|/ | | | | | | | | | | | The Kconfig entry for SUNRPC_SWAP selects NETVM. That select statement was added in commit a564b8f0398636ba30b07c0eaebdef7ff7837249 ("nfs: enable swap on NFS"). But there's no Kconfig symbol NETVM. It apparently was only in used in development versions of the swap over nfs functionality but never entered mainline. Anyhow, it is a nop and can safely be dropped. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* net/sunrpc: remove depends on CONFIG_EXPERIMENTALKees Cook2013-01-111-1/+1
| | | | | | | | | | | | | The CONFIG_EXPERIMENTAL config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it from any "depends on" lines in Kconfigs. CC: Trond Myklebust <Trond.Myklebust@netapp.com> CC: "J. Bruce Fields" <bfields@fieldses.org> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfs: enable swap on NFSMel Gorman2012-07-311-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the new swapfile a_ops for NFS and hook up ->direct_IO. This will set the NFS socket to SOCK_MEMALLOC and run socket reconnect under PF_MEMALLOC as well as reset SOCK_MEMALLOC before engaging the protocol ->connect() method. PF_MEMALLOC should allow the allocation of struct socket and related objects and the early (re)setting of SOCK_MEMALLOC should allow us to receive the packets required for the TCP connection buildup. [jlayton@redhat.com: Restore PF_MEMALLOC task flags in all cases] [dfeng@redhat.com: Fix handling of multiple swap files] [a.p.zijlstra@chello.nl: Original patch] Signed-off-by: Mel Gorman <mgorman@suse.de> Acked-by: Rik van Riel <riel@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: David S. Miller <davem@davemloft.net> Cc: Eric B Munson <emunson@mgebm.net> Cc: Eric Paris <eparis@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: Neil Brown <neilb@suse.de> Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Xiaotian Feng <dfeng@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SUNRPC/NFS: Add Kbuild dependencies for NFS_DEBUG/RPC_DEBUGTrond Myklebust2012-03-201-0/+13
| | | | | | | | | | | | This allows us to turn on/off the dprintk() debugging interfaces for those distributions that don't ship the 'rpcdebug' utility. It also allows us to add Kbuild dependencies. Specifically, we already know that dprintk() in general relies on CONFIG_SYSCTL. Now it turns out that the NFS dprintks depend on CONFIG_CRC32 after we added support for the filehandle hash. Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: sunrpc should not explicitly depend on NFS config optionsTrond Myklebust2011-07-151-0/+4
| | | | | | | | Change explicit references to CONFIG_NFS_V4_1 to implicit ones Get rid of the unnecessary defines in backchannel_rqst.c and bc_svc.c: the Makefile takes care of those dependency. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Fix the SUNRPC Kerberos V RPCSEC_GSS module dependenciesTrond Myklebust2011-04-151-5/+4
| | | | | | | | Since kernel 2.6.35, the SUNRPC Kerberos support has had an implicit dependency on a number of additional crypto modules. The following patch makes that dependency explicit. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* nfsd4: remove spkm3J. Bruce Fields2010-10-011-19/+0
| | | | | | | | | | | | | | | Unfortunately, spkm3 never got very far; while interoperability with one other implementation was demonstrated at some point, problems were found with the spec that were deemed not worth fixing. The kernel code is useless on its own without nfs-utils patches which were never merged into nfs-utils, and were only ever available from citi.umich.edu. They appear not to have been updated since 2005. Therefore it seems safe to assume that this code has no users, and never will. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
* NFS: Fix the selection of security flavours in KconfigTrond Myklebust2010-08-171-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | Randy Dunlap reports: ERROR: "svc_gss_principal" [fs/nfs/nfs.ko] undefined! because in fs/nfs/Kconfig, NFS_V4 selects RPCSEC_GSS_KRB5 and/or in fs/nfsd/Kconfig, NFSD_V4 selects RPCSEC_GSS_KRB5. RPCSEC_GSS_KRB5 does 5 selects, but none of these is enforced/followed by the fs/nfs[d]/Kconfig configs: select SUNRPC_GSS select CRYPTO select CRYPTO_MD5 select CRYPTO_DES select CRYPTO_CBC Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: J. Bruce Fields <bfields@fieldses.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-04-031-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits) trivial: Update my email address trivial: NULL noise: drivers/mtd/tests/mtd_*test.c trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h trivial: Fix misspelling of "Celsius". trivial: remove unused variable 'path' in alloc_file() trivial: fix a pdlfush -> pdflush typo in comment trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL trivial: wusb: Storage class should be before const qualifier trivial: drivers/char/bsr.c: Storage class should be before const qualifier trivial: h8300: Storage class should be before const qualifier trivial: fix where cgroup documentation is not correctly referred to trivial: Give the right path in Documentation example trivial: MTD: remove EOL from MODULE_DESCRIPTION trivial: Fix typo in bio_split()'s documentation trivial: PWM: fix of #endif comment trivial: fix typos/grammar errors in Kconfig texts trivial: Fix misspelling of firmware trivial: cgroups: documentation typo and spelling corrections trivial: Update contact info for Jochen Hein trivial: fix typo "resgister" -> "register" ...
| * trivial: fix typos/grammar errors in Kconfig textsMatt LaPlante2009-03-301-1/+1
| | | | | | | | | | | | Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | SUNRPC: Remove CONFIG_SUNRPC_REGISTER_V4Chuck Lever2009-03-281-22/+0
|/ | | | | | | | | | | | | We just augmented the kernel's RPC service registration code so that it automatically adjusts to what is supported in user space. Thus we no longer need the kernel configuration option to enable registering RPC services with v4 -- it's all done automatically. This patch is part of a series that addresses http://bugzilla.kernel.org/show_bug.cgi?id=12256 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* sunrpc: fix rdma dependenciesRandy Dunlap2009-02-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Fix sunrpc/rdma build dependencies. Survives 12 build combinations of INET, IPV6, SUNRPC, INFINIBAND, and INFINIBAND_ADDR_TRANS. ERROR: "rdma_destroy_id" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_connect" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_destroy_qp" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_create_id" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_create_qp" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_resolve_route" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_disconnect" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_resolve_addr" [net/sunrpc/xprtrdma/xprtrdma.ko] undefined! ERROR: "rdma_accept" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_destroy_id" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_listen" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_create_id" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_create_qp" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_bind_addr" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! ERROR: "rdma_disconnect" [net/sunrpc/xprtrdma/svcrdma.ko] undefined! Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* nfs: note that CONFIG_SUNRPC_XPRT_RDMA turns on server side support tooJ. Bruce Fields2009-01-271-3/+2
| | | | | | We forgot to update this when adding server-side support. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* fs/Kconfig: move sunrpc outAlexey Dobriyan2009-01-221-0/+79
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
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