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path: root/fs/nfsd/nfsxdr.c
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2014-06-23NFSD: Using min/max/min_t/max_t for calculateKinglong Mee
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-05-22nfsd: Remove assignments inside conditionsBenoit Taine
Assignments should not happen inside an if conditional, but in the line before. This issue was reported by checkpatch. The semantic patch that makes this change is as follows (http://coccinelle.lip6.fr/): // <smpl> @@ identifier i1; expression e1; statement S; @@ -if(!(i1 = e1)) S +i1 = e1; +if(!i1) +S // </smpl> It has been tested by compilation. Signed-off-by: Benoit Taine <benoit.taine@lip6.fr> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2014-04-04nfsd: revert v2 half of "nfsd: don't return high mode bits"J. Bruce Fields
This reverts the part of commit 6e14b46b91fee8a049b0940333ce13a820beaaa5 that changes NFSv2 behavior. Mark Lord found that it broke nfs-root for Linux clients, because it broke NFSv2. In fact, from RFC 1094: "Notice that the file type is specified both in the mode bits and in the file type. This is really a bug in the protocol and will be fixed in future versions." So NFSv2 clients really are expected to depend on the high bits of the mode. Cc: stable@kernel.org Reported-by: Mark Lord <mlord@pobox.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-12-10nfsd: don't return high mode bitsAlbert Fluegel
The Linux NFS server replies among other things to a "Check access permission" the following: NFS: File type = 2 (Directory) NFS: Mode = 040755 A netapp server replies here: NFS: File type = 2 (Directory) NFS: Mode = 0755 The RFC 1813 i read: fattr3 struct fattr3 { ftype3 type; mode3 mode; uint32 nlink; ... For the mode bits only the lowest 9 are defined in the RFC As far as I can tell, knfsd has always done this, so apparently it's harmless. Nevertheless, it appears to be wrong. Note this is already correct in the NFSv4 case, only v2 and v3 need fixing. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2013-02-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...
2013-02-26nfsd: handle vfs_getattr errors in acl protocolJ. Bruce Fields
We're currently ignoring errors from vfs_getattr. The correct thing to do is to do the stat in the main service procedure not in the response encoding. Reported-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-26switch vfs_getattr() to struct pathAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-13nfsd: Convert nfsxdr to use kuids and kgidsEric W. Biederman
When reading uids and gids off the wire convert them to kuids and kgids. If the conversion results in an invalid result don't set the ATTR_UID or ATTR_GID. When putting kuids and kgids onto the wire first convert them to uids and gids the other side will understand. Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-02-13nfsd: Remove nfsd_luid, nfsd_lgid, nfsd_ruid and nfsd_rgidEric W. Biederman
These trivial macros that don't currently do anything are the last vestiages of an old attempt at uid mapping that was removed from the kernel in September of 2002. Remove them to make it clear what the code is currently doing. Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2012-12-17nfsd4: cleanup: replace rq_resused count by rq_next_page pointerJ. Bruce Fields
It may be a matter of personal taste, but I find this makes the code clearer. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2009-12-15nfsd: remove pointless paths in file headersJ. Bruce Fields
The new .h files have paths at the top that are now out of date. While we're here, just remove all of those from fs/nfsd; they never served any purpose. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: Move private headers to source directoryBoaz Harrosh
Lots of include/linux/nfsd/* headers are only used by nfsd module. Move them to the source directory Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-14nfsd: Source files #include cleanupsBoaz Harrosh
Now that the headers are fixed and carry their own wait, all fs/nfsd/ source files can include a minimal set of headers. and still compile just fine. This patch should improve the compilation speed of the nfsd module. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-02-14Use struct path in struct svc_exportJan Blunck
I'm embedding struct path into struct svc_export. [akpm@linux-foundation.org: coding-style fixes] [ezk@cs.sunysb.edu: NFSD: fix wrong mnt_writer count in rename] Signed-off-by: Jan Blunck <jblunck@suse.de> Acked-by: J. Bruce Fields <bfields@citi.umich.edu> Acked-by: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01nfsd: move nfsd/auth.h into fs/nfsdJ. Bruce Fields
This header is used only in a few places in fs/nfsd, so there seems to be little point to having it in include/. (Thanks to Robert Day for pointing this out.) Cc: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-02-01NFSD: Use unsigned length argument for decode_pathnameChuck Lever
Clean up: path name lengths are unsigned on the wire, negative lengths are not meaningful natively either. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Acked-By: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-02-01NFSD: Use unsigned length argument for decode_filenameChuck Lever
Clean up: file name lengths are unsigned on the wire, negative lengths are not meaningful natively either. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Acked-By: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-01-13knfsd: Allow NFSv2/3 WRITE calls to succeed when krb5i etc is used.NeilBrown
When RPCSEC/GSS and krb5i is used, requests are padded, typically to a multiple of 8 bytes. This can make the request look slightly longer than it really is. As of f34b95689d2ce001c "The NFSv2/NFSv3 server does not handle zero length WRITE request correctly", the xdr decode routines for NFSv2 and NFSv3 reject requests that aren't the right length, so krb5i (for example) WRITE requests can get lost. This patch relaxes the appropriate test and enhances the related comment. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Peter Staubach <staubach@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-09knfsd: 64 bit ino support for NFS serverPeter Staubach
Modify the NFS server code to support 64 bit ino's, as appropriate for the system and the NFS protocol version. The gist of the changes is to query the underlying file system for attributes and not just to use the cached attributes in the inode. For this specific purpose, the inode only contains an ino field which unsigned long, which is large enough on 64 bit platforms, but is not large enough on 32 bit platforms. I haven't been able to find any reason why ->getattr can't be called while i_mutex. The specification indicates that i_mutex is not required to be held in order to invoke ->getattr, but it doesn't say that i_mutex can't be held while invoking ->getattr. I also haven't come to any conclusions regarding the value of lease_get_mtime() and whether it should or should not be invoked by fill_post_wcc() too. I chose not to change this because I thought that it was safer to leave well enough alone. If we decide to make a change, it can be done separately. Signed-off-by: Peter Staubach <staubach@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Acked-by: Neil Brown <neilb@suse.de>
2007-05-09knfsd: various nfsd xdr cleanupsNeilBrown
1/ decode_sattr and decode_sattr3 never return NULL, so remove several checks for that. ditto for xdr_decode_hyper. 2/ replace some open coded XDR_QUADLEN calls with calls to XDR_QUADLEN 3/ in decode_writeargs, simply an 'if' to use a single calculation. .page_len is the length of that part of the packet that did not fit in the first page (the head). So the length of the data part is the remainder of the head, plus page_len. 3/ other minor cleanups. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-09The NFSv2/NFSv3 server does not handle zero length WRITE requests correctlyPeter Staubach
The NFSv2 and NFSv3 servers do not handle WRITE requests for 0 bytes correctly. The specifications indicate that the server should accept the request, but it should mostly turn into a no-op. Currently, the server will return an XDR decode error, which it should not. Attached is a patch which addresses this issue. It also adds some boundary checking to ensure that the request contains as much data as was requested to be written. It also correctly handles an NFSv3 request which requests to write more data than the server has stated that it is prepared to handle. Previously, there was some support which looked like it should work, but wasn't quite right. Signed-off-by: Peter Staubach <staubach@redhat.com> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14[PATCH] knfsd: add some new fsid typesNeilBrown
Add support for using a filesystem UUID to identify and export point in the filehandle. For NFSv2, this UUID is xor-ed down to 4 or 8 bytes so that it doesn't take up too much room. For NFSv3+, we use the full 16 bytes, and possibly also a 64bit inode number for exports beneath the root of a filesystem. When generating an fsid to return in 'stat' information, use the UUID (hashed down to size) if it is available and a small 'fsid' was not specifically provided. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-26[PATCH] knfsd: Fix type mismatch with filldir_t used by nfsdNeilBrown
nfsd defines a type 'encode_dent_fn' which is much like 'filldir_t' except that the first pointer is 'struct readdir_cd *' rather than 'void *'. It then casts encode_dent_fn points to 'filldir_t' as needed. This hides any other type mismatches between the two such as the fact that the 'ino' arg recently changed from ino_t to u64. So: get rid of 'encode_dent_fn', get rid of the cast of the function type, change the first arg of various functions from 'struct readdir_cd *' to 'void *', and live with the fact that we have a little less type checking on the calling of these functions now. Less internal (to nfsd) checking offset by more external checking, which is more important. Thanks to Gabriel Paubert <paubert@iram.es> for discovering this and providing an initial patch. Signed-off-by: Gabriel Paubert <paubert@iram.es> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-07[PATCH] remove NFSD_OPTIMIZE_SPACEAdrian Bunk
This patch removes the unused NFSD_OPTIMIZE_SPACE. Additionally, it does differently what NFSD_OPTIMIZE_SPACE was supposed to do: Nowadays, gcc knows best when to inline code, and CONFIG_CC_OPTIMIZE_FOR_SIZE even tells gcc globally whether to optimize for size or for speed. Therefore, this patch also removes all inline's from these files. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-20[PATCH] xdr annotations: NFSv2 serverAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] knfsd: Prepare knfsd for support of rsize/wsize of up to 1MB, over TCPGreg Banks
The limit over UDP remains at 32K. Also, make some of the apparently arbitrary sizing constants clearer. The biggest change here involves replacing NFSSVC_MAXBLKSIZE by a function of the rqstp. This allows it to be different for different protocols (udp/tcp) and also allows it to depend on the servers declared sv_bufsiz. Note that we don't actually increase sv_bufsz for nfs yet. That comes next. Signed-off-by: Greg Banks <gnb@melbourne.sgi.com> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] knfsd: Avoid excess stack usage in svc_tcp_recvfromNeilBrown
.. by allocating the array of 'kvec' in 'struct svc_rqst'. As we plan to increase RPCSVC_MAXPAGES from 8 upto 256, we can no longer allocate an array of this size on the stack. So we allocate it in 'struct svc_rqst'. However svc_rqst contains (indirectly) an array of the same type and size (actually several, but they are in a union). So rather than waste space, we move those arrays out of the separately allocated union and into svc_rqst to share with the kvec moved out of svc_tcp_recvfrom (various arrays are used at different times, so there is no conflict). Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04[PATCH] knfsd: Replace two page lists in struct svc_rqst with oneNeilBrown
We are planning to increase RPCSVC_MAXPAGES from about 8 to about 256. This means we need to be a bit careful about arrays of size RPCSVC_MAXPAGES. struct svc_rqst contains two such arrays. However the there are never more that RPCSVC_MAXPAGES pages in the two arrays together, so only one array is needed. The two arrays are for the pages holding the request, and the pages holding the reply. Instead of two arrays, we can simply keep an index into where the first reply page is. This patch also removes a number of small inline functions that probably server to obscure what is going on rather than clarify it, and opencode the needed functionality. Also remove the 'rq_restailpage' variable as it is *always* 0. i.e. if the response 'xdr' structure has a non-empty tail it is always in the same pages as the head. check counters are initilised and incr properly check for consistant usage of ++ etc maybe extra some inlines for common approach general review Signed-off-by: Neil Brown <neilb@suse.de> Cc: Magnus Maatta <novell@kiruna.se> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03fix file specification in commentsUwe Zeisberger
Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-01-14[PATCH] Unlinline a bunch of other functionsArjan van de Ven
Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06[PATCH] knfsd: check error status from vfs_getattr and i_op->fsyncDavid Shaw
Both vfs_getattr and i_op->fsync return error statuses which nfsd was largely ignoring. This as noticed when exporting directories using fuse. This patch cleans up most of the offences, which involves moving the call to vfs_getattr out of the xdr encoding routines (where it is too late to report an error) into the main NFS procedure handling routines. There is still a called to vfs_gettattr (related to the ACL code) where the status is ignored, and called to nfsd_sync_dir don't check return status either. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-22[PATCH] NFSD: Add server support for NFSv3 ACLs.Andreas Gruenbacher
This adds functions for encoding and decoding POSIX ACLs for the NFSACL protocol extension, and the GETACL and SETACL RPCs. The implementation is compatible with NFSACL in Solaris. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!