- 07 2月, 2012 5 次提交
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由 Stanislav Kinsbursky 提交于
This patch splits global list of NFS clients into per-net-ns array of lists. This looks more strict and clearer. BTW, this patch also makes "/proc/fs/nfsfs/servers" entry content depends on /proc mount owner pid namespace. See below for details. NOTE: few words about how was /proc/fs/nfsfs/ entries content show per network namespace done. This is a little bit tricky and not the best is could be. But it's cheap (proper fix for /proc conteinerization is a hard nut to crack). The idea is simple: take proper network namespace from pid namespace child reaper nsproxy of /proc/ mount creator. This actually means, that if there are 2 containers with different net namespace sharing pid namespace, then read of /proc/fs/nfsfs/ entries will always return content, taken from net namespace of pid namespace creator task (and thus second namespace set wil be unvisible). Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Bryan Schumaker 提交于
Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Bryan Schumaker 提交于
This patch removes the CONFIG_NFS_USE_NEW_IDMAPPER compile option. First, the idmapper will attempt to map the id using /sbin/request-key and nfsidmap. If this fails (if /etc/request-key.conf is not configured properly) then the idmapper will call the legacy code to perform the mapping. I left a comment stating where the legacy code begins to make it easier for somebody to remove in the future. Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Weston Andros Adamson 提交于
This patch addresses printks that have some context to show that they are from fs/nfs/, but for the sake of consistency now start with NFS: Signed-off-by: NWeston Andros Adamson <dros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Weston Andros Adamson 提交于
Messages like "Got error -10052 from the server on DESTROY_SESSION. Session has been destroyed regardless" can be confusing to users who aren't very familiar with NFS. NOTE: This patch ignores any printks() that start by printing __func__ - that will be in a separate patch. Signed-off-by: NWeston Andros Adamson <dros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 01 2月, 2012 5 次提交
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由 Stanislav Kinsbursky 提交于
v2: 1) Added "nfs_idmap_init" and "nfs_idmap_quit" definitions for kernels built without CONFIG_NFS_V4 option set. This patch subscribes NFS clients to RPC pipefs notifications. Idmap notifier is registering on NFS module load. This notifier callback is responsible for creation/destruction of PipeFS idmap pipe dentry for NFS4 clients. Since ipdmap pipe is created in rpc client pipefs directory, we have make sure, that this directory has been created already. IOW RPC client notifier callback has been called already. To achive this, PipeFS notifier priorities has been introduced (RPC clients notifier priority is greater than NFS idmap one). But this approach gives another problem: unlink for RPC client directory will be called before NFS idmap pipe unlink on UMOUNT event and will fail, because directory is not empty. The solution, introduced in this patch, is to try to remove client directory once again after idmap pipe was unlinked. This looks like ugly hack, so probably it should be replaced in some more elegant way. Note that no locking required in notifier callback because PipeFS superblock pointer is passed as an argument from it's creation or destruction routine and thus we can be sure about it's validity. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
This patch makes NFS idmap pipes dentries allocated and destroyed in network namespace context by PipeFS network namespace aware routines. Network namespace context is obtained from nfs_client structure. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
This is a cleanup patch. We don't need this reference anymore. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
This patch is a final step towards to removing PipeFS inode references from kernel code other than PipeFS itself. It makes all kernel SUNRPC PipeFS users depends on pipe private data, which state depend on their specific operations, etc. This patch completes SUNRPC PipeFS preparations and allows to create pipe private data and PipeFS dentries independently. Next step will be making SUNPRC PipeFS dentries allocated by SUNRPC PipeFS network namespace aware routines. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Stanislav Kinsbursky 提交于
RPC pipe upcall doesn't requires only private pipe data. Thus RPC inode references in this code can be removed. Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 08 1月, 2012 1 次提交
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由 Trond Myklebust 提交于
...so that we can do the uid/gid mapping outside the asynchronous RPC context. This fixes a bug in the current NFSv4 atomic open code where the client isn't able to determine what the true uid/gid fields of the file are, (because the asynchronous nature of the OPEN call denies it the ability to do an upcall) and so fills them with default values, marking the inode as needing revalidation. Unfortunately, in some cases, the VFS will do some additional sanity checks on the file, and may override the server's decision to allow the open because it sees the wrong owner/group fields. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 19 10月, 2011 1 次提交
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由 Peng Tao 提交于
The same function is used by idmap, gss and blocklayout code. Make it generic. Signed-off-by: NPeng Tao <peng_tao@emc.com> Signed-off-by: NJim Rees <rees@umich.edu> Cc: stable@kernel.org [3.0] Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 20 6月, 2011 1 次提交
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由 Vitaliy Ivanov 提交于
Many stupid corrections of duplicated includes based on the output of scripts/checkincludes.pl. Signed-off-by: NVitaliy Ivanov <vitalivanov@gmail.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
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- 12 3月, 2011 4 次提交
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由 Trond Myklebust 提交于
The new behaviour is enabled using the new module parameter 'nfs4_disable_idmapping'. Note that if the server rejects an unmapped uid or gid, then the client will automatically switch back to using the idmapper. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Trond Myklebust 提交于
...instead of the nfs_client. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Trond Myklebust 提交于
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Trond Myklebust 提交于
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 05 1月, 2011 1 次提交
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由 J. Bruce Fields 提交于
Trivial, but confusing when you're trying to grep through this code.... Signed-off-by: NJ. Bruce Fields <bfields@redhat.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 28 10月, 2010 1 次提交
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由 Dan Carpenter 提交于
The intent was to test "*desc" for allocation failures, but it tests "desc" which is always a valid pointer here. Signed-off-by: NDan Carpenter <error27@gmail.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 08 10月, 2010 1 次提交
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由 Bryan Schumaker 提交于
This patch creates a new idmapper system that uses the request-key function to place a call into userspace to map user and group ids to names. The old idmapper was single threaded, which prevented more than one request from running at a single time. This means that a user would have to wait for an upcall to finish before accessing a cached result. The upcall result is stored on a keyring of type id_resolver. See the file Documentation/filesystems/nfs/idmapper.txt for instructions. Signed-off-by: NBryan Schumaker <bjschuma@netapp.com> [Trond: fix up the return value of nfs_idmap_lookup_name and clean up code] Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 10 8月, 2009 2 次提交
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由 Trond Myklebust 提交于
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Trond Myklebust 提交于
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 21 2月, 2008 1 次提交
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由 Harvey Harrison 提交于
fs/nfs/nfs4state.c:788:34: warning: Using plain integer as NULL pointer fs/nfs/delegation.c:52:34: warning: Using plain integer as NULL pointer fs/nfs/idmap.c:312:12: warning: Using plain integer as NULL pointer fs/nfs/callback_xdr.c:257:6: warning: Using plain integer as NULL pointer fs/nfs/callback_xdr.c:270:6: warning: Using plain integer as NULL pointer fs/nfs/callback_xdr.c:281:6: warning: Using plain integer as NULL pointer Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 30 1月, 2008 3 次提交
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由 Chuck Lever 提交于
Clean up: always use the same type when handling buffer lengths. As a bonus, this prevents a mixed sign comparison in idmap_lookup_name. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Chuck Lever 提交于
The idmap_pipe_upcall() function expects the copy_to_user() function to return a negative error value if the call fails, but copy_to_user() returns an unsigned long number of bytes that couldn't be copied. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Chuck Lever 提交于
Clean up white space damage and use standard kernel coding conventions for return statements. Signed-off-by: NChuck Lever <chuck.lever@oracle.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 10 5月, 2007 1 次提交
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由 Milind Arun Choudhary 提交于
use __set_current_state(TASK_*) instead of current->state = TASK_*, in fs/nfs Signed-off-by: NMilind Arun Choudhary <milindchoudhary@gmail.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 09 12月, 2006 1 次提交
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由 Josef "Jeff" Sipek 提交于
Change all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the nfs client code. Signed-off-by: NJosef "Jeff" Sipek <jsipek@cs.sunysb.edu> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 23 9月, 2006 5 次提交
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由 Trond Myklebust 提交于
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 David Howells 提交于
The attached patch makes NFS share superblocks between mounts from the same server and FSID over the same protocol. It does this by creating each superblock with a false root and returning the real root dentry in the vfsmount presented by get_sb(). The root dentry set starts off as an anonymous dentry if we don't already have the dentry for its inode, otherwise it simply returns the dentry we already have. We may thus end up with several trees of dentries in the superblock, and if at some later point one of anonymous tree roots is discovered by normal filesystem activity to be located in another tree within the superblock, the anonymous root is named and materialises attached to the second tree at the appropriate point. Why do it this way? Why not pass an extra argument to the mount() syscall to indicate the subpath and then pathwalk from the server root to the desired directory? You can't guarantee this will work for two reasons: (1) The root and intervening nodes may not be accessible to the client. With NFS2 and NFS3, for instance, mountd is called on the server to get the filehandle for the tip of a path. mountd won't give us handles for anything we don't have permission to access, and so we can't set up NFS inodes for such nodes, and so can't easily set up dentries (we'd have to have ghost inodes or something). With this patch we don't actually create dentries until we get handles from the server that we can use to set up their inodes, and we don't actually bind them into the tree until we know for sure where they go. (2) Inaccessible symbolic links. If we're asked to mount two exports from the server, eg: mount warthog:/warthog/aaa/xxx /mmm mount warthog:/warthog/bbb/yyy /nnn We may not be able to access anything nearer the root than xxx and yyy, but we may find out later that /mmm/www/yyy, say, is actually the same directory as the one mounted on /nnn. What we might then find out, for example, is that /warthog/bbb was actually a symbolic link to /warthog/aaa/xxx/www, but we can't actually determine that by talking to the server until /warthog is made available by NFS. This would lead to having constructed an errneous dentry tree which we can't easily fix. We can end up with a dentry marked as a directory when it should actually be a symlink, or we could end up with an apparently hardlinked directory. With this patch we need not make assumptions about the type of a dentry for which we can't retrieve information, nor need we assume we know its place in the grand scheme of things until we actually see that place. This patch reduces the possibility of aliasing in the inode and page caches for inodes that may be accessed by more than one NFS export. It also reduces the number of superblocks required for NFS where there are many NFS exports being used from a server (home directory server + autofs for example). This in turn makes it simpler to do local caching of network filesystems, as it can then be guaranteed that there won't be links from multiple inodes in separate superblocks to the same cache file. Obviously, cache aliasing between different levels of NFS protocol could still be a problem, but at least that gives us another key to use when indexing the cache. This patch makes the following changes: (1) The server record construction/destruction has been abstracted out into its own set of functions to make things easier to get right. These have been moved into fs/nfs/client.c. All the code in fs/nfs/client.c has to do with the management of connections to servers, and doesn't touch superblocks in any way; the remaining code in fs/nfs/super.c has to do with VFS superblock management. (2) The sequence of events undertaken by NFS mount is now reordered: (a) A volume representation (struct nfs_server) is allocated. (b) A server representation (struct nfs_client) is acquired. This may be allocated or shared, and is keyed on server address, port and NFS version. (c) If allocated, the client representation is initialised. The state member variable of nfs_client is used to prevent a race during initialisation from two mounts. (d) For NFS4 a simple pathwalk is performed, walking from FH to FH to find the root filehandle for the mount (fs/nfs/getroot.c). For NFS2/3 we are given the root FH in advance. (e) The volume FSID is probed for on the root FH. (f) The volume representation is initialised from the FSINFO record retrieved on the root FH. (g) sget() is called to acquire a superblock. This may be allocated or shared, keyed on client pointer and FSID. (h) If allocated, the superblock is initialised. (i) If the superblock is shared, then the new nfs_server record is discarded. (j) The root dentry for this mount is looked up from the root FH. (k) The root dentry for this mount is assigned to the vfsmount. (3) nfs_readdir_lookup() creates dentries for each of the entries readdir() returns; this function now attaches disconnected trees from alternate roots that happen to be discovered attached to a directory being read (in the same way nfs_lookup() is made to do for lookup ops). The new d_materialise_unique() function is now used to do this, thus permitting the whole thing to be done under one set of locks, and thus avoiding any race between mount and lookup operations on the same directory. (4) The client management code uses a new debug facility: NFSDBG_CLIENT which is set by echoing 1024 to /proc/net/sunrpc/nfs_debug. (5) Clone mounts are now called xdev mounts. (6) Use the dentry passed to the statfs() op as the handle for retrieving fs statistics rather than the root dentry of the superblock (which is now a dummy). Signed-Off-By: NDavid Howells <dhowells@redhat.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 David Howells 提交于
Return an error when starting the idmapping pipe so that we can detect it failing. Signed-Off-By: NDavid Howells <dhowells@redhat.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 David Howells 提交于
Rename struct nfs4_client to struct nfs_client so that it can become the basis for a general client record for NFS2 and NFS3 in addition to NFS4. Signed-Off-By: NDavid Howells <dhowells@redhat.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 David Howells 提交于
Fix ups for the splitting of the superblock stuff out of fs/nfs/inode.c, including: (*) Move the callback tcpport module param into callback.c. (*) Move the idmap cache timeout module param into idmap.c. (*) Changes to internal.h: (*) namespace-nfs4.c was renamed to nfs4namespace.c. (*) nfs_stat_to_errno() is in nfs2xdr.c, not nfs4xdr.c. (*) nfs4xdr.c is contingent on CONFIG_NFS_V4. (*) nfs4_path() is only uses if CONFIG_NFS_V4 is set. Plus also: (*) The sec_flavours[] table should really be const. Signed-Off-By: NDavid Howells <dhowells@redhat.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 25 8月, 2006 2 次提交
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由 Trond Myklebust 提交于
rpc_unlink() and rpc_rmdir() will dput the dentry reference for you. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from a05a57effa71a1f67ccbfc52335c10c8b85f3f6a commit)
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由 Trond Myklebust 提交于
Signe-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com> (cherry picked from 88bf6d811b01a4be7fd507d18bf5f1c527989089 commit)
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- 09 6月, 2006 1 次提交
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由 Trond Myklebust 提交于
This should enable us to detect if we are crossing a mountpoint in the case where the server is exporting "nohide" mounts. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 21 3月, 2006 3 次提交
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由 Ingo Molnar 提交于
semaphore to mutex conversion. the conversion was generated via scripts, and the result was validated automatically via a script as well. build and boot tested. Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Eric Sesterhenn 提交于
this converts fs/nfs to kzalloc() usage. compile tested with make allyesconfig Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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由 Trond Myklebust 提交于
If not, we cannot guarantee that idmap->idmap_dentry, gss_auth->dentry and clnt->cl_dentry are valid dentries. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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- 07 1月, 2006 1 次提交
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由 Trond Myklebust 提交于
If someone changes the uid/gid mapping in userland, then we do eventually want those changes to be propagated to the kernel. Currently the kernel assumes that it may cache entries forever. Add an expiration time + garbage collector for idmap entries. Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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