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* Merge branch 'master' of ↵David S. Miller2008-12-162-1/+2
|\ | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/e1000e/ich8lan.c
| * nfsd: use of unitialized list head on error exit in nfs4recover.cJ. Bruce Fields2008-11-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Thanks to Matthew Dodd for this bug report: A file label issue while running SELinux in MLS mode provoked the following bug, which is a result of use before init on a 'struct list_head'. In nfsd4_list_rec_dir() if the call to dentry_open() fails the 'goto out' skips INIT_LIST_HEAD() which results in the normally improbable case where list_entry() returns NULL. Trace follows. NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory SELinux: Context unconfined_t:object_r:var_lib_nfs_t:s0 is not valid (left unmapped). type=1400 audit(1227298063.609:282): avc: denied { read } for pid=1890 comm="rpc.nfsd" name="v4recovery" dev=dm-0 ino=148726 scontext=system_u:system_r:nfsd_t:s0-s15:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s15:c0.c1023 tclass=dir BUG: unable to handle kernel NULL pointer dereference at 00000004 IP: [<c050894e>] list_del+0x6/0x60 *pde = 0d9ce067 *pte = 00000000 Oops: 0000 [#1] SMP Modules linked in: nfsd lockd nfs_acl auth_rpcgss exportfs autofs4 sunrpc ipv6 dm_multipath scsi_dh ppdev parport_pc sg parport floppy ata_piix pata_acpi ata_generic libata pcnet32 i2c_piix4 mii pcspkr i2c_core dm_snapshot dm_zero dm_mirror dm_log dm_mod BusLogic sd_mod scsi_mod crc_t10dif ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode] Pid: 1890, comm: rpc.nfsd Not tainted (2.6.27.5-37.fc9.i686 #1) EIP: 0060:[<c050894e>] EFLAGS: 00010217 CPU: 0 EIP is at list_del+0x6/0x60 EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: cd99e480 ESI: cf9caed8 EDI: 00000000 EBP: cf9caebc ESP: cf9caeb8 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process rpc.nfsd (pid: 1890, ti=cf9ca000 task=cf4de580 task.ti=cf9ca000) Stack: 00000000 cf9caef0 d0a9f139 c0496d04 d0a9f217 fffffff3 00000000 00000000 00000000 00000000 cf32b220 00000000 00000008 00000801 cf9caefc d0a9f193 00000000 cf9caf08 d0a9b6ea 00000000 cf9caf1c d0a874f2 cf9c3004 00000008 Call Trace: [<d0a9f139>] ? nfsd4_list_rec_dir+0xf3/0x13a [nfsd] [<c0496d04>] ? do_path_lookup+0x12d/0x175 [<d0a9f217>] ? load_recdir+0x0/0x26 [nfsd] [<d0a9f193>] ? nfsd4_recdir_load+0x13/0x34 [nfsd] [<d0a9b6ea>] ? nfs4_state_start+0x2a/0xc5 [nfsd] [<d0a874f2>] ? nfsd_svc+0x51/0xff [nfsd] [<d0a87f2d>] ? write_svc+0x0/0x1e [nfsd] [<d0a87f48>] ? write_svc+0x1b/0x1e [nfsd] [<d0a87854>] ? nfsctl_transaction_write+0x3a/0x61 [nfsd] [<c04b6a4e>] ? sys_nfsservctl+0x116/0x154 [<c04975c1>] ? putname+0x24/0x2f [<c04975c1>] ? putname+0x24/0x2f [<c048d49f>] ? do_sys_open+0xad/0xb7 [<c048d337>] ? filp_close+0x50/0x5a [<c048d4eb>] ? sys_open+0x1e/0x26 [<c0403cca>] ? syscall_call+0x7/0xb [<c064007b>] ? init_cyrix+0x185/0x490 ======================= Code: 75 e1 8b 53 08 8d 4b 04 8d 46 04 e8 75 00 00 00 8b 53 10 8d 4b 0c 8d 46 0c e8 67 00 00 00 5b 5e 5f 5d c3 90 90 55 89 e5 53 89 c3 <8b> 40 04 8b 00 39 d8 74 16 50 53 68 3e d6 6f c0 6a 30 68 78 d6 EIP: [<c050894e>] list_del+0x6/0x60 SS:ESP 0068:cf9caeb8 ---[ end trace a89c4ad091c4ad53 ]--- Cc: Matthew N. Dodd <Matthew.Dodd@spart.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd: clean up grace period on early exitJ. Bruce Fields2008-11-241-0/+1
| | | | | | | | | | | | | | | | | | If nfsd was shut down before the grace period ended, we could end up with a freed object still on grace_list. Thanks to Jeff Moyer for reporting the resulting list corruption warnings. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Tested-by: Jeff Moyer <jmoyer@redhat.com>
* | Merge branch 'master' of ↵David S. Miller2008-11-121-4/+1
|\| | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/message/fusion/mptlan.c drivers/net/sfc/ethtool.c net/mac80211/debugfs_sta.c
| * Fix nfsd truncation of readdir resultsDoug Nazar2008-11-091-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8d7c4203 "nfsd: fix failure to set eof in readdir in some situations" introduced a bug: on a directory in an exported ext3 filesystem with dir_index unset, a READDIR will only return about 250 entries, even if the directory was larger. Bisected it back to this commit; reverting it fixes the problem. It turns out that in this case ext3 reads a block at a time, then returns from readdir, which means we can end up with buf.full==0 but with more entries in the directory still to be read. Before 8d7c4203 (but after c002a6c797 "Optimise NFS readdir hack slightly"), this would cause us to return the READDIR result immediately, but with the eof bit unset. That could cause a performance regression (because the client would need more roundtrips to the server to read the whole directory), but no loss in correctness, since the cleared eof bit caused the client to send another readdir. After 8d7c4203, the setting of the eof bit made this a correctness problem. So, move nfserr_eof into the loop and remove the buf.full check so that we loop until buf.used==0. The following seems to do the right thing and reduces the network traffic since we don't return a READDIR result until the buffer is full. Tested on an empty directory & large directory; eof is properly sent and there are no more short buffers. Signed-off-by: Doug Nazar <nazard@dragoninc.ca> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | Merge branch 'master' of ↵David S. Miller2008-11-071-0/+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
| * nfsd: fix failure to set eof in readdir in some situationsJ. Bruce Fields2008-10-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before 14f7dd632011bb89c035722edd6ea0d90ca6b078 "[PATCH] Copy XFS readdir hack into nfsd code", readdir_cd->err was reset to eof before each call to vfs_readdir; afterwards, it is set only once. Similarly, c002a6c7977320f95b5edede5ce4e0eeecf291ff "[PATCH] Optimise NFS readdir hack slightly", can cause us to exit without nfserr_eof set. Fix this. This ensures the "eof" bit is set when needed in readdir replies. (The particular case I saw was an nfsv4 readdir of an empty directory, which returned with no entries (the protocol requires "." and ".." to be filtered out), but with eof unset.) Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | fs: replace NIPQUAD()Harvey Harrison2008-10-312-3/+3
|/ | | | | | | | Using NIPQUAD() with NIPQUAD_FMT, %d.%d.%d.%d or %u.%u.%u.%u can be replaced with %pI4 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-10-235-116/+201
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (46 commits) [PATCH] fs: add a sanity check in d_free [PATCH] i_version: remount support [patch] vfs: make security_inode_setattr() calling consistent [patch 1/3] FS_MBCACHE: don't needlessly make it built-in [PATCH] move executable checking into ->permission() [PATCH] fs/dcache.c: update comment of d_validate() [RFC PATCH] touch_mnt_namespace when the mount flags change [PATCH] reiserfs: add missing llseek method [PATCH] fix ->llseek for more directories [PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intent [PATCH vfs-2.6 5/6] vfs: remove LOOKUP_PARENT from non LOOKUP_PARENT lookup [PATCH vfs-2.6 4/6] vfs: remove unnecessary fsnotify_d_instantiate() [PATCH vfs-2.6 3/6] vfs: add __d_instantiate() helper [PATCH vfs-2.6 2/6] vfs: add d_ancestor() [PATCH vfs-2.6 1/6] vfs: replace parent == dentry->d_parent by IS_ROOT() [PATCH] get rid of on-stack dentry in udf [PATCH 2/2] anondev: switch to IDA [PATCH 1/2] anondev: init IDR statically [JFFS2] Use d_splice_alias() not d_add() in jffs2_lookup() [PATCH] Optimise NFS readdir hack slightly. ...
| * [PATCH] Optimise NFS readdir hack slightly.David Woodhouse2008-10-231-2/+3
| | | | | | | | | | | | | | | | | | | | | | Avoid calling the underlying ->readdir() again when we reached the end already; keep going round the loop only if we stopped due to our own buffer being full. [AV: tidy the things up a bit, while we are there] Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] prepare vfs_readdir() callers to returning filldir resultAl Viro2008-10-231-2/+9
| | | | | | | | | | | | | | It's not the final state, but it allows moving ->readdir() instances to passing filldir return value to caller of vfs_readdir(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Copy XFS readdir hack into nfsd code.David Woodhouse2008-10-231-15/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some file systems with their own internal locking have problems with the way that nfsd calls the ->lookup() method from within a filldir function called from their ->readdir() method. The recursion back into the file system code can cause deadlock. XFS has a fairly hackish solution to this which involves doing the readdir() into a locally-allocated buffer, then going back through it calling the filldir function afterwards. It's not ideal, but it works. It's particularly suboptimal because XFS does this for local file systems too, where it's completely unnecessary. Copy this hack into the NFS code where it can be used only for NFS export. In response to feedback, use it unconditionally rather than only for the affected file systems. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Factor out nfsd_do_readdir() into its own functionDavid Woodhouse2008-10-231-16/+24
| | | | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] switch nfsd to kern_path()Al Viro2008-10-234-58/+56
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] sanitize svc_export_parse()Al Viro2008-10-231-42/+35
| | | | | | | | | | | | clean up the exit paths, get rid of nameidata Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | nfsd: clean up expkey_parse error casesJ. Bruce Fields2008-10-221-14/+11
| | | | | | | | | | | | | | We might as well do all of these at the end. Fix up a couple minor style nits while we're there. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | nfsd: Drop reference in expkey_parse error casesKrishna Kumar2008-10-221-2/+6
| | | | | | | | | | | | | | Drop reference to export key on error. Compile tested. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | nfsd: Fix memory leak in nfsd_getxattrKrishna Kumar2008-10-221-1/+5
| | | | | | | | | | | | | | | | Fix a memory leak in nfsd_getxattr. nfsd_getxattr should free up memory that it allocated if vfs_getxattr fails. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | NFSD: Fix BUG during NFSD shutdown processingChuck Lever2008-10-221-0/+4
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Linux NFS server can be started via a user-space write to /proc/fs/nfs/threads or to /proc/fs/nfs/portlist. In the first case, all default listeners are started (both UDP and TCP). In the second, a listener is started only for one specified transport. The NFS server has to make sure lockd stays up until the last listener transport goes away. To support both start-up interfaces, it should do one lockd_up() for each NFSD listener. The nfsd_init_socks() function used to do one lockd_up() call for each svc_create_xprt(). Recently commit 26a414092353590ceaa5955bcb53f863d6ea7549 mistakenly changed nfsd_init_socks() to do only one lockd_up() call even though it still does two svc_create_xprt() calls. The end result is a lockd_down() BUG during NFSD shutdown processing because nfsd_last_threads() does a lockd_down() call for each entry on the sv_permsocks list, but the start-up code doesn't do a matching number of lockd_up() calls. Add a second lockd_up() in nfsd_init_socks() to make sure the number of lockd_up() calls matches the number of entries on the NFS servers's sv_permsocks list. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NLM: Remove unused argument from svc_addsock() functionChuck Lever2008-10-041-1/+1
| | | | | | | | | Clean up: The svc_addsock() function no longer uses its "proto" argument, so remove it. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* NLM: Remove "proto" argument from lockd_up()Chuck Lever2008-10-042-15/+9
| | | | | | | | | Clean up: Now that lockd_up() starts listeners for both transports, the "proto" argument is no longer needed. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: common grace period controlJ. Bruce Fields2008-10-033-24/+19
| | | | | | | | | | | | | | | | | | | | | Rewrite grace period code to unify management of grace period across lockd and nfsd. The current code has lockd and nfsd cooperate to compute a grace period which is satisfactory to them both, and then individually enforce it. This creates a slight race condition, since the enforcement is not coordinated. It's also more complicated than necessary. Here instead we have lockd and nfsd each inform common code when they enter the grace period, and when they're ready to leave the grace period, and allow normal locking only after both of them are ready to leave. We also expect the locks_start_grace()/locks_end_grace() interface here to be simpler to build on for future cluster/high-availability work, which may require (for example) putting individual filesystems into grace, or enforcing grace periods across multiple cluster nodes. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: use nfs client rpc callback programBenny Halevy2008-09-301-0/+1
| | | | | | | | | | | | | | | since commit ff7d9756b501744540be65e172d27ee321d86103 "nfsd: use static memory for callback program and stats" do_probe_callback uses a static callback program (NFS4_CALLBACK) rather than the one set in clp->cl_callback.cb_prog as passed in by the client in setclientid (4.0) or create_session (4.1). This patches introduces rpc_create_args.prognumber that allows overriding program->number when creating rpc_clnt. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: do_probe_callback should not clear rpc statsBenny Halevy2008-09-301-3/+0
| | | | | | | | | | | | | | | | | | | Now that cb_stats are static (since commit ff7d9756b501744540be65e172d27ee321d86103) there's no need to clear them. Initially I thought it might make sense to do that every callback probing but since the stats are per-program and they are shared between possibly several client callback instances, zeroing them out seems like the wrong thing to do. Note that that commit also introduced a bug since stats.program is also being cleared in the process and it is not restored after the memset as it used to be. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: allocate readahead cache in individual chunksJeff Layton2008-09-291-24/+35
| | | | | | | | | | | | | | | | | | | I had a report from someone building a large NFS server that they were unable to start more than 585 nfsd threads. It was reported against an older kernel using the slab allocator, and I tracked it down to the large allocation in nfsd_racache_init failing. It appears that the slub allocator handles large allocations better, but large contiguous allocations can often be problematic. There doesn't seem to be any reason that the racache has to be allocated as a single large chunk. This patch breaks this up so that the racache is built up from separate allocations. (Thanks also to Takashi Iwai for a bugfix.) Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Takashi Iwai <tiwai@suse.de>
* nfsd: nfs4xdr decode_stateid helper functionBenny Halevy2008-09-291-44/+55
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: properly xdr-decode NFS4_OPEN_CLAIM_DELEGATE_CUR stateidBenny Halevy2008-09-291-1/+3
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: don't declare p in ENCODE_SEQID_OP_HEADBenny Halevy2008-09-291-1/+1
| | | | | | | | | | After using the encode_stateid helper the "p" pointer declared by ENCODE_SEQID_OP_HEAD is warned as unused. In the single site where it is still needed it can be declared separately using the ENCODE_HEAD macro. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: nfs4xdr encode_stateid helper functionBenny Halevy2008-09-291-44/+32
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: fix nfsd4_encode_open buffer space reservationBenny Halevy2008-09-291-1/+1
| | | | | | | | | nfsd4_encode_open first reservation is currently for 36 + sizeof(stateid_t) while it writes after the stateid a cinfo (20 bytes) and 5 more 4-bytes words, for a total of 40 + sizeof(stateid_t). Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: properly xdr-encode deleg stateid returned from openBenny Halevy2008-09-291-2/+6
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: properly xdr-encode stateid4.seqid as uint32_t for cb_recallBenny Halevy2008-09-291-1/+2
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: permit unauthenticated stat of export rootJ. Bruce Fields2008-09-294-17/+31
| | | | | | | | | | | | | | | | | | | | | | | | RFC 2623 section 2.3.2 permits the server to bypass gss authentication checks for certain operations that a client may perform when mounting. In the case of a client that doesn't have some form of credentials available to it on boot, this allows it to perform the mount unattended. (Presumably real file access won't be needed until a user with credentials logs in.) Being slightly more lenient allows lots of old clients to access krb5-only exports, with the only loss being a small amount of information leaked about the root directory of the export. This affects only v2 and v3; v4 still requires authentication for all access. Thanks to Peter Staubach testing against a Solaris client, which suggesting addition of v3 getattr, to the list, and to Trond for noting that doing so exposes no additional information. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Peter Staubach <staubach@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
* SUNRPC: Add address family field to svc_serv data structureChuck Lever2008-09-291-0/+1
| | | | | | | | | | Introduce and initialize an address family field in the svc_serv structure. This field will determine what family to use for the service's listener sockets and what families are advertised via the local rpcbind daemon. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: fix buffer overrun decoding NFSv4 aclJ. Bruce Fields2008-09-011-1/+1
| | | | | | | | | | The array we kmalloc() here is not large enough. Thanks to Johann Dahm and David Richter for bug report and testing. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: David Richter <richterd@citi.umich.edu> Tested-by: Johann Dahm <jdahm@umich.edu>
* nfsd: fix compound state allocation error handlingAndy Adamson2008-09-011-6/+6
| | | | | | | | | Move the cstate_alloc call so that if it fails, the response is setup to encode the NFS error. The out label now means that the nfsd4_compound_state has not been allocated. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2008-08-131-3/+3
|\ | | | | | | | | | | | | * 'for-2.6.27' of git://linux-nfs.org/~bfields/linux: fs/nfsd/export.c: Adjust error handling code involving auth_domain_put MAINTAINERS: mention lockd and sunrpc in nfs entries lockd: trivial sparse endian annotations
| * fs/nfsd/export.c: Adjust error handling code involving auth_domain_putJulia Lawall2008-07-301-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Once clp is assigned, it never becomes NULL, so we can make a label for it in the error handling code. Because the call to path_lookup follows the call to auth_domain_find, its error handling code should jump to this new label. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r@ expression x,E; statement S; position p1,p2,p3; @@ ( if ((x = auth_domain_find@p1(...)) == NULL || ...) S | x = auth_domain_find@p1(...) ... when != x if (x == NULL || ...) S ) <... if@p3 (...) { ... when != auth_domain_put(x) when != if (x) { ... auth_domain_put(x); ...} return@p2 ...; } ...> ( return x; | return 0; | x = E | E = x | auth_domain_put(x) ) @exists@ position r.p1,r.p2,r.p3; expression x; int ret != 0; statement S; @@ * x = auth_domain_find@p1(...) <... * if@p3 (...) S ...> * return@p2 \(NULL\|ret\); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | [NFSD] uninline nfsd4_op_name()Adrian Bunk2008-08-081-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There doesn't seem to be a compelling reason why nfsd4_op_name() is marked as "inline": It's only used in a dprintk(), and as long as it has only one caller non-ancient gcc versions anyway inline it automatically. This patch fixes the following compile error with gcc 3.4: ... CC fs/nfsd/nfs4proc.o nfs4proc.c: In function `nfsd4_proc_compound': nfs4proc.c:854: sorry, unimplemented: inlining failed in call to nfs4proc.c:897: sorry, unimplemented: called from here make[3]: *** [fs/nfsd/nfs4proc.o] Error 1 Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> [ Also made it "const char *" - Linus] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [PATCH] get rid of indirect users of namei.hAl Viro2008-07-271-0/+1
| | | | | | | | | | | | | | fs.h needs path.h, not namei.h; nfs_fs.h doesn't need it at all. Several places in the tree needed direct include. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [PATCH] kill nameidata passing to permission(), rename to inode_permission()Al Viro2008-07-272-3/+3
| | | | | | | | | | | | | | Incidentally, the name that gives hundreds of false positives on grep is not a good idea... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [patch 5/5] vfs: remove mode parameter from vfs_symlink()Miklos Szeredi2008-07-271-8/+2
| | | | | | | | | | | | | | | | | | Remove the unused mode parameter from vfs_symlink and callers. Thanks to Tetsuo Handa for noticing. CC: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
* | lockd: dont return EAGAIN for a permanent errorMiklos Szeredi2008-07-251-4/+9
|/ | | | | | | | | | | | | | | | | | Fix nlm_fopen() to return NLM_FAILED (or NLM_LCK_DENIED_NOLOCKS) instead of NLM_LCK_DENIED. The latter means the lock request failed because of a conflicting lock (i.e. a temporary error), which is wrong in this case. Also fix the client to return ENOLCK instead of EAGAIN if a blocking lock request returns with NLM_LOCK_DENIED. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Matthew Wilcox <matthew@wil.cx> Cc: David Teigland <teigland@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-2.6.27' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2008-07-2112-441/+544
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.27' of git://linux-nfs.org/~bfields/linux: (51 commits) nfsd: nfs4xdr.c do-while is not a compound statement nfsd: Use C99 initializers in fs/nfsd/nfs4xdr.c lockd: Pass "struct sockaddr *" to new failover-by-IP function lockd: get host reference in nlmsvc_create_block() instead of callers lockd: minor svclock.c style fixes lockd: eliminate duplicate nlmsvc_lookup_host call from nlmsvc_lock lockd: eliminate duplicate nlmsvc_lookup_host call from nlmsvc_testlock lockd: nlm_release_host() checks for NULL, caller needn't file lock: reorder struct file_lock to save space on 64 bit builds nfsd: take file and mnt write in nfs4_upgrade_open nfsd: document open share bit tracking nfsd: tabulate nfs4 xdr encoding functions nfsd: dprint operation names svcrdma: Change WR context get/put to use the kmem cache svcrdma: Create a kmem cache for the WR contexts svcrdma: Add flush_scheduled_work to module exit function svcrdma: Limit ORD based on client's advertised IRD svcrdma: Remove unused wait q from svcrdma_xprt structure svcrdma: Remove unneeded spin locks from __svc_rdma_free svcrdma: Add dma map count and WARN_ON ...
| * nfsd: nfs4xdr.c do-while is not a compound statementHarvey Harrison2008-07-181-2/+2
| | | | | | | | | | | | | | | | | | The WRITEMEM macro produces sparse warnings of the form: fs/nfsd/nfs4xdr.c:2668:2: warning: do-while statement is not a compound statement Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd: Use C99 initializers in fs/nfsd/nfs4xdr.cJ. Bruce Fields2008-07-181-74/+74
| | | | | | | | | | | | | | | | Thanks to problem report and original patch from Harvey Harrison. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Harvey Harrison <harvey.harrison@gmail.com> Cc: Benny Halevy <bhalevy@panasas.com>
| * lockd: Pass "struct sockaddr *" to new failover-by-IP functionChuck Lever2008-07-151-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | Pass a more generic socket address type to nlmsvc_unlock_all_by_ip() to allow for future support of IPv6. Also provide additional sanity checking in failover_unlock_ip() when constructing the server's IP address. As an added bonus, provide clean kerneldoc comments on related NLM interfaces which were recently added. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd: take file and mnt write in nfs4_upgrade_openBenny Halevy2008-07-071-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | testing with newpynfs revealed this warning: Jul 3 07:32:50 buml kernel: writeable file with no mnt_want_write() Jul 3 07:32:50 buml kernel: ------------[ cut here ]------------ Jul 3 07:32:50 buml kernel: WARNING: at /usr0/export/dev/bhalevy/git/linux-pnfs-bh-nfs41/include/linux/fs.h:855 drop_file_write_access+0x6b/0x7e() Jul 3 07:32:50 buml kernel: Modules linked in: nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc Jul 3 07:32:50 buml kernel: Call Trace: Jul 3 07:32:50 buml kernel: 6eaadc88: [<6002f471>] warn_on_slowpath+0x54/0x8e Jul 3 07:32:50 buml kernel: 6eaadcc8: [<601b790d>] printk+0xa0/0x793 Jul 3 07:32:50 buml kernel: 6eaadd38: [<601b6205>] __mutex_lock_slowpath+0x1db/0x1ea Jul 3 07:32:50 buml kernel: 6eaadd68: [<7107d4d5>] nfs4_preprocess_seqid_op+0x2a6/0x31c [nfsd] Jul 3 07:32:50 buml kernel: 6eaadda8: [<60078dc9>] drop_file_write_access+0x6b/0x7e Jul 3 07:32:50 buml kernel: 6eaaddc8: [<710804e4>] nfsd4_open_downgrade+0x114/0x1de [nfsd] Jul 3 07:32:50 buml kernel: 6eaade08: [<71076215>] nfsd4_proc_compound+0x1ba/0x2dc [nfsd] Jul 3 07:32:50 buml kernel: 6eaade48: [<71068221>] nfsd_dispatch+0xe5/0x1c2 [nfsd] Jul 3 07:32:50 buml kernel: 6eaade88: [<71312f81>] svc_process+0x3fd/0x714 [sunrpc] Jul 3 07:32:50 buml kernel: 6eaadea8: [<60039a81>] kernel_sigprocmask+0xf3/0x100 Jul 3 07:32:50 buml kernel: 6eaadee8: [<7106874b>] nfsd+0x182/0x29b [nfsd] Jul 3 07:32:50 buml kernel: 6eaadf48: [<60021cc9>] run_kernel_thread+0x41/0x4a Jul 3 07:32:50 buml kernel: 6eaadf58: [<710685c9>] nfsd+0x0/0x29b [nfsd] Jul 3 07:32:50 buml kernel: 6eaadf98: [<60021cb0>] run_kernel_thread+0x28/0x4a Jul 3 07:32:50 buml kernel: 6eaadfc8: [<60013829>] new_thread_handler+0x72/0x9c Jul 3 07:32:50 buml kernel: Jul 3 07:32:50 buml kernel: ---[ end trace 2426dd7cb2fba3bf ]--- Bruce Fields suggested this (Thanks!): maybe we need to be doing a mnt_want_write on open_upgrade and mnt_put_write on downgrade? This patch adds a call to mnt_want_write and file_take_write (which is doing the actual work). The counter-calls mnt_drop_write a file_release_write are now being properly called by drop_file_write_access in the exact path printed by the warning above. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * nfsd: document open share bit trackingJ. Bruce Fields2008-07-071-0/+18
| | | | | | | | | | | | | | It's not immediately obvious from the code why we're doing this. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Benny Halevy <bhalevy@panasas.com>
| * nfsd: tabulate nfs4 xdr encoding functionsBenny Halevy2008-07-041-114/+91
| | | | | | | | | | | | | | | | | | | | | | In preparation for minorversion 1 All encoders now return an nfserr status (typically their nfserr argument). Unsupported ops go through nfsd4_encode_operation too, so use nfsd4_encode_noop to encode nothing for their reply body. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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