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* hostfs: set maximum filesize in superblock for proper LFS supportWolfgang Illmeyer2009-06-301-0/+1
| | | | | | | | | | | | | Maximum file size for hostfs mounts defaults to 2GB, so bigger files cannot be read/written through hostfs. This patch initializes the maximum file size to MAX_LFS_SIZE. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=13531 Signed-off-by: Wolfgang Illmeyer <wolfgang@illmeyer.com> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ext2: return -EIO not -ESTALE on directory traversal through deleted inodeBryan Donlan2009-06-301-2/+10
| | | | | | | | | | | | | | | | | | | | | | | ext2_iget() returns -ESTALE if invoked on a deleted inode, in order to report errors to NFS properly. However, in ext[234]_lookup(), this -ESTALE can be propagated to userspace if the filesystem is corrupted such that a directory entry references a deleted inode. This leads to a misleading error message - "Stale NFS file handle" - and confusion on the part of the admin. The bug can be easily reproduced by creating a new filesystem, making a link to an unused inode using debugfs, then mounting and attempting to ls -l said link. This patch thus changes ext2_lookup to return -EIO if it receives -ESTALE from ext2_iget(), as ext2 does for other filesystem metadata corruption; and also invokes the appropriate ext*_error functions when this case is detected. Signed-off-by: Bryan Donlan <bdonlan@gmail.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* elf: limit max map count to safe valueKAMEZAWA Hiroyuki2009-06-301-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | With ELF, at generating coredump, some more headers other than used vmas are added. When max_map_count == 65536, a core generated by following kinds of code can be unreadable because the number of ELF's program header is written in 16bit in Ehdr (please see elf.h) and the number overflows. == ... = mmap(); (munmap, mprotect, etc...) if (failed) abort(); == This can happen in mmap/munmap/mprotect/etc...which calls split_vma(). I think 65536 is not safe as _default_ and reduce it to 65530 is good for avoiding unexpected corrupted core. Anyway, max_map_count can be enlarged by sysctl if a user is brave.. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Jakub Jelinek <jakub@redhat.com> Acked-by: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* eventfd: revised interface and cleanupsDavide Libenzi2009-06-302-29/+117
| | | | | | | | | | | | | | | | | | | | | Change the eventfd interface to de-couple the eventfd memory context, from the file pointer instance. Without such change, there is no clean way to racely free handle the POLLHUP event sent when the last instance of the file* goes away. Also, now the internal eventfd APIs are using the eventfd context instead of the file*. This patch is required by KVM's IRQfd code, which is still under development. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: Gregory Haskins <ghaskins@novell.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: Avi Kivity <avi@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* AFS: Fix lock imbalanceJiri Slaby2009-06-301-1/+0
| | | | | | | | | Don't unlock on vfs_rejected_lock path in afs_do_setlk, since the lock is unlocked after abort_attempt label. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* integrity: add ima_counts_put (updated)Mimi Zohar2009-06-291-0/+7
| | | | | | | | | | | This patch fixes an imbalance message as reported by J.R. Okajima. The IMA file counters are incremented in ima_path_check. If the actual open fails, such as ETXTBSY, decrement the counters to prevent unnecessary imbalance messages. Reported-by: J.R. Okajima <hooanon05@yahoo.co.jp> Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
* cifs: fix fh_mutex locking in cifs_reopen_fileJeff Layton2009-06-271-5/+5
| | | | | | | | | | | | Fixes a regression caused by commit a6ce4932fbdbcd8f8e8c6df76812014351c32892 When this lock was converted to a mutex, the locks were turned into unlocks and vice-versa. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds2009-06-2615-158/+246
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] remove unknown mount option warning message [CIFS] remove bkl usage from umount begin cifs: Fix incorrect return code being printed in cFYI messages [CIFS] cleanup asn handling for ntlmssp [CIFS] Copy struct *after* setting the port, instead of before. cifs: remove rw/ro options cifs: fix problems with earlier patches cifs: have cifs parse scope_id out of IPv6 addresses and use it [CIFS] Do not send tree disconnect if session is already disconnected [CIFS] Fix build break cifs: display scopeid in /proc/mounts cifs: add new routine for converting AF_INET and AF_INET6 addrs cifs: have cifs_show_options show forceuid/forcegid options cifs: remove unneeded NULL checks from cifs_show_options
| * [CIFS] remove unknown mount option warning messageSteve French2009-06-261-0/+4
| | | | | | | | | | | | | | | | | | | | Jeff's previous patch which removed the unneeded rw/ro parsing can cause a minor warning in dmesg (about the unknown rw or ro mount option) at mount time. This patch makes cifs ignore them in kernel to remove the warning (they are already handled in the mount helper and VFS). Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] remove bkl usage from umount beginSteve French2009-06-261-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The lock_kernel call moved into the fs for umount_begin is not needed. This adds a check to make sure we don't call umount_begin twice on the same fs. umount_begin for cifs is probably not needed and may eventually be able to be removed, but in the meantime this smaller patch is safe and gets rid of the bkl from this path which provides some benefit. Acked-by: Jeff Layton <redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * cifs: Fix incorrect return code being printed in cFYI messagesSuresh Jayaraman2009-06-255-20/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | FreeXid() along with freeing Xid does add a cifsFYI debug message that prints rc (return code) as well. In some code paths where we set/return error code after calling FreeXid(), incorrect error code is being printed when cifsFYI is enabled. This could be misleading in few cases. For eg. In cifs_open() if cifs_fill_filedata() returns a valid pointer to cifsFileInfo, FreeXid() prints rc=-13 whereas 0 is actually being returned. Fix this by setting rc before calling FreeXid(). Basically convert FreeXid(xid); rc = -ERR; return -ERR; => FreeXid(xid); return rc; [Note that Christoph would like to replace the GetXid/FreeXid calls, which are primarily used for debugging. This seems like a good longer term goal, but although there is an alternative tracing facility, there are no examples yet available that I know of that we can use (yet) to convert this cifs function entry/exit logging, and for creating an identifier that we can use to correlate all dmesg log entries for a particular vfs operation (ie identify all log entries for a particular vfs request to cifs: e.g. a particular close or read or write or byte range lock call ... and just using the thread id is harder). Eventually when a replacement for this is available (e.g. when NFS switches over and various samples to look at in other file systems) we can remove the GetXid/FreeXid macro but in the meantime multiple people use this run time configurable logging all the time for debugging, and Suresh's patch fixes a problem which made it harder to notice some low memory problems in the log so it is worthwhile to fix this problem until a better logging approach is able to be used] Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] cleanup asn handling for ntlmsspSteve French2009-06-254-9/+52
| | | | | | | | | | | | | | | | | | | | | | Also removes obsolete distinction between rawntlmssp and ntlmssp (in asn/SPNEGO) since as jra noted we can always send raw ntlmssp in session setup now. remove check for experimental runtime flag (/proc/fs/cifs/Experimental) in ntlmssp path. Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] Copy struct *after* setting the port, instead of before.Simo Leone2009-06-251-2/+2
| | | | | | | | | | | | Acked-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Simo Leone <simo@archlinux.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * cifs: remove rw/ro optionsJeff Layton2009-06-251-6/+0
| | | | | | | | | | | | | | | | | | | | | | cifs: remove rw/ro options These options are handled at the VFS layer. They only ever set the option in the smb_vol struct. Nothing was ever done with them afterward anyway. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * cifs: fix problems with earlier patchesJeff Layton2009-06-251-2/+0
| | | | | | | | | | | | | | | | | | | | cifs: fix problems with earlier patches cifs_show_address hasn't been introduced yet, and fix a typo that was silently fixed by a later patch in the series. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * cifs: have cifs parse scope_id out of IPv6 addresses and use itJeff Layton2009-06-253-9/+33
| | | | | | | | | | | | | | | | | | | | | | | | This patch has CIFS look for a '%' in an IPv6 address. If one is present then it will try to treat that value as a numeric interface index suitable for stuffing into the sin6_scope_id field. This should allow people to mount servers on IPv6 link-local addresses. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: David Holder <david@erion.co.uk> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] Do not send tree disconnect if session is already disconnectedSteve French2009-06-252-2/+2
| | | | | | | | | | | | | | | | | | | | Noticed this when tree connect timed out (due to Samba server crash) - we try to send a tree disconnect for a tid that does not exist since we don't have a valid tree id yet. This checks that the session is valid before sending the tree disconnect to handle this case. Signed-off-by: Steve French <sfrench@us.ibm.com>
| * [CIFS] Fix build breakSteve French2009-06-151-1/+1
| | | | | | | | Signed-off-by: Steve French <sfrench@us.ibm.com>
| * cifs: display scopeid in /proc/mountsJeff Layton2009-06-151-11/+22
| | | | | | | | | | | | | | | | Move address display into a new function and display the scopeid as part of the address in /proc/mounts. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6Steve French2009-06-1444-2083/+1341
| |\
| * | cifs: add new routine for converting AF_INET and AF_INET6 addrsJeff Layton2009-06-134-40/+38
| | | | | | | | | | | | | | | | | | | | | ...to consolidate some logic used in more than one place. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | cifs: have cifs_show_options show forceuid/forcegid optionsJeff Layton2009-06-131-0/+5
| | | | | | | | | | | | | | | Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
| * | cifs: remove unneeded NULL checks from cifs_show_optionsJeff Layton2009-06-131-71/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | show_options is always called with the namespace_sem held. Therefore we don't need to worry about the vfsmount being NULL, or it vanishing while the function is running. By the same token, there's no need to worry about the superblock, tcon, smb or tcp sessions being NULL on entry. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
* | | another race fix in jfs_check_acl()Al Viro2009-06-241-6/+7
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Get "no acls for this inode" right, fix shmem breakageAl Viro2009-06-242-6/+3
| | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2009-06-2448-741/+326
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (23 commits) switch xfs to generic acl caching helpers helpers for acl caching + switch to those switch shmem to inode->i_acl switch reiserfs to inode->i_acl switch reiserfs to usual conventions for caching ACLs reiserfs: minimal fix for ACL caching switch nilfs2 to inode->i_acl switch btrfs to inode->i_acl switch jffs2 to inode->i_acl switch jfs to inode->i_acl switch ext4 to inode->i_acl switch ext3 to inode->i_acl switch ext2 to inode->i_acl add caching of ACLs in struct inode fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls cleanup __writeback_single_inode ... and the same for vfsmount id/mount group id Make allocation of anon devices cheaper update Documentation/filesystems/Locking devpts: remove module-related code ...
| * | | switch xfs to generic acl caching helpersAl Viro2009-06-244-75/+9
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | helpers for acl caching + switch to thoseAl Viro2009-06-249-333/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | helpers: get_cached_acl(inode, type), set_cached_acl(inode, type, acl), forget_cached_acl(inode, type). ubifs/xattr.c needed includes reordered, the rest is a plain switchover. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch reiserfs to inode->i_aclAl Viro2009-06-243-34/+4
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch reiserfs to usual conventions for caching ACLsAl Viro2009-06-242-19/+14
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | reiserfs: minimal fix for ACL cachingAl Viro2009-06-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | reiserfs uses NULL as "unknown" and ERR_PTR(-ENODATA) as "no ACL"; several codepaths store the former instead of the latter. All those codepaths go through iset_acl() and all cases when it's called with NULL acl are for the second variety, so the minimal fix is to teach iset_acl() to deal with that. Proper fix is to switch to more usual conventions and avoid back and forth between internally used ERR_PTR(-ENODATA) and NULL expected by the rest of the kernel. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch nilfs2 to inode->i_aclAl Viro2009-06-243-22/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Actually, get rid of private analog, since nothing in there is using ACLs at all so far. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch btrfs to inode->i_aclAl Viro2009-06-244-27/+9
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch jffs2 to inode->i_aclAl Viro2009-06-245-48/+19
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch jfs to inode->i_aclAl Viro2009-06-244-41/+15
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch ext4 to inode->i_aclAl Viro2009-06-245-40/+10
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch ext3 to inode->i_aclAl Viro2009-06-244-36/+10
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | switch ext2 to inode->i_aclAl Viro2009-06-245-41/+11
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | add caching of ACLs in struct inodeAl Viro2009-06-241-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | No helpers, no conversions yet. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ↵Ankit Jain2009-06-243-29/+112
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ioctls This patch adds ioctls to vfs for compatibility with legacy XFS pre-allocation ioctls (XFS_IOC_*RESVP*). The implementation effectively invokes sys_fallocate for the new ioctls. Also handles the compat_ioctl case. Note: These legacy ioctls are also implemented by OCFS2. [AV: folded fixes from hch] Signed-off-by: Ankit Jain <me@ankitjain.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | cleanup __writeback_single_inodeChristoph Hellwig2009-06-241-50/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no reason to for the split between __writeback_single_inode and __sync_single_inode, the former just does a couple of checks before tail-calling the latter. So merge the two, and while we're at it split out the I_SYNC waiting case for data integrity writers, as it's logically separate function. Finally rename __writeback_single_inode to writeback_single_inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | ... and the same for vfsmount id/mount group idAl Viro2009-06-242-6/+26
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Make allocation of anon devices cheaperAl Viro2009-06-241-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Standard trick - add a new variable (start) such that for each n < start n is known to be busy. Allocation can skip checking everything in [0..start) and if it returns n, we can set start to n + 1. Freeing below start sets start to what we'd just freed. Of course, it still sucks if we do something like free 0 allocate allocate in a loop - still O(n^2) time. However, on saner loads it improves the things a lot and the entire thing is not worth the trouble of switching to something with better worst-case behaviour. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | devpts: remove module-related codeH. Peter Anvin2009-06-241-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These days, the devpts filesystem is closely integrated with the pty memory management, and cannot be built as a module, even less removed from the kernel. Accordingly, remove all module-related stuff from this filesystem. [ v2: only remove code that's actually dead ] Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | VFS: Switch init_mount_tree() to use the new create_mnt_ns() helperTrond Myklebust2009-06-241-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Eliminates some duplicated code... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | vfs: fix nd->root leak in do_filp_open()J. R. Okajima2009-06-241-1/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 2a737871108de9ba8930f7650d549f1383767f8b "Cache root in nameidata" introduced a new member nd->root, but forgot to put it in do_filp_open(). Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | reiserfs: remove stray unlock_super in reiserfs_resizeChristoph Hellwig2009-06-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reiserfs doesn't use lock_super anywhere internally, and ->remount_fs which calls reiserfs_resize does have it currently but also expects it to be held on return, so there's no business for the unlock_super here. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked by Edward Shishkin <edward.shishkin@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | | Merge branch 'for_linus' of ↵Linus Torvalds2009-06-242-6/+10
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6: udf: remove redundant tests on unsigned udf: Use device size when drive reported bogus number of written blocks
| * | | | udf: remove redundant tests on unsignedRoel Kluin2009-06-241-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | first_block and goal are unsigned. When negative they are wrapped and caught by the other test. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
| * | | | udf: Use device size when drive reported bogus number of written blocksJan Kara2009-06-181-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some drives report 0 as the number of written blocks when there are some blocks recorded. Use device size in such case so that we can automagically mount such media. Signed-off-by: Jan Kara <jack@suse.cz>
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