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path: root/fs/jffs2/xattr.c
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* jffs2: remove a trailing white space in commentariesTracey Dent2011-03-11
| | | | | | Signed-off-by: Tracey Dent <tdent48227@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* jffs2: fix error value signVasiliy Kulikov2010-12-03
| | | | | | | | | | do_verify_xattr_datum(), do_load_xattr_datum(), load_xattr_datum() and verify_xattr_ref() should return negative value on error. Sometimes they return EIO that is positive. Change this to -EIO. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* convert remaining ->clear_inode() to ->evict_inode()Al Viro2010-08-09
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Fix up trivial spelling errors ('taht' -> 'that')Linus Torvalds2010-07-21
| | | | | | | | | Pointed out by Lucas who found the new one in a comment in setup_percpu.c. And then I fixed the others that I grepped for. Reported-by: Lucas <canolucas@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* jffs2: constify xattr_handlerStephen Hemminger2010-05-21
| | | | | Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* sanitize xattr handler prototypesChristoph Hellwig2009-12-16
| | | | | | | | | | | | | | | | | | | | | Add a flags argument to struct xattr_handler and pass it to all xattr handler methods. This allows using the same methods for multiple handlers, e.g. for the ACL methods which perform exactly the same action for the access and default ACLs, just using a different underlying attribute. With a little more groundwork it'll also allow sharing the methods for the regular user/trusted/secure handlers in extN, ocfs2 and jffs2 like it's already done for xfs in this patch. Also change the inode argument to the handlers to a dentry to allow using the handlers mechnism for filesystems that require it later, e.g. cifs. [with GFS2 bits updated by Steven Whitehouse <swhiteho@redhat.com>] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* tree-wide: fix assorted typos all over the placeAndré Goddard Rosa2009-12-04
| | | | | | | | | | That is "success", "unknown", "through", "performance", "[re|un]mapping" , "access", "default", "reasonable", "[con]currently", "temperature" , "channel", "[un]used", "application", "example","hierarchy", "therefore" , "[over|under]flow", "contiguous", "threshold", "enough" and others. Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2008-05-01
|\ | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: [MTD][NOR] Add physical address to point() method [JFFS2] Track parent inode for directories (for NFS export) [JFFS2] Invert last argument of jffs2_gc_fetch_inode(), make it boolean. [JFFS2] Quiet lockdep false positive. [JFFS2] Clean up jffs2_alloc_inode() and jffs2_i_init_once() [MTD] Delete long-unused jedec.h header file. [MTD] [NAND] at91_nand: use at91_nand_{en,dis}able consistently.
| * [JFFS2] Track parent inode for directories (for NFS export)David Woodhouse2008-05-01
| | | | | | | | | | | | | | | | To support NFS export, we need to know the parent inode of directories. Rather than growing the jffs2_inode_cache structure, share space with the nlink field -- which was always set to 1 for directories anyway. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | fs: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-30
|/ | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [JFFS2] Fix potential memory leak of dead xattrs on unmount.David Woodhouse2007-05-20
| | | | | | | | | An xattr_datum which ends up orphaned should be freed by the GC thread. But if we umount before the GC thread is finished, or if we mount read-only and the GC thread never runs, they might never be freed. Clean them up during unmount, if there are any left. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Fix BUG() caused by failing to discard xattrs on deleted files.David Woodhouse2007-05-20
| | | | | | | | | | | | | | | | | | When we cannot mark nodes as obsolete, such as on NAND flash, we end up having to delete inodes with !nlink in jffs2_build_remove_unlinked_inode(). However, jffs2_build_xattr_subsystem() runs later than this, and will attach an xref to the dead inode. Then later when the last nodes of that dead inode are erased we hit a BUG() in jffs2_del_ino_cache() because we're not supposed to get there with an xattr still attached to the inode which is being killed. The simple fix is to refrain from attaching xattrs to inodes with zero nlink, in jffs2_build_xattr_subsystem(). It's it's OK to trust nlink here because the file system isn't actually mounted yet, so there's no chance that a zero-nlink file could actually be alive still because it's open. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Tidy up licensing/copyright boilerplate.David Woodhouse2007-04-25
| | | | | | | | | | | | | | In particular, remove the bit in the LICENCE file about contacting Red Hat for alternative arrangements. Their errant IS department broke that arrangement a long time ago -- the policy of collecting copyright assignments from contributors came to an end when the plug was pulled on the servers hosting the project, without notice or reason. We do still dual-license it for use with eCos, with the GPL+exception licence approved by the FSF as being GPL-compatible. It's just that nobody has the right to license it differently. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] kill warning RE debug-only variablesJeff Garzik2006-10-04
| | | | | | | | | | | | | | | gcc emits the following warning on a 'allmodconfig' build: fs/jffs2/xattr.c: In function ‘unrefer_xattr_datum’: fs/jffs2/xattr.c:402: warning: unused variable ‘version’ fs/jffs2/xattr.c:402: warning: unused variable ‘xid’ Given that these variables are only used in the debug printk, and they merely remove a deref, we can easily kill the warning by adding the derefs to the debug printk. Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* fs/jffs2/xattr.c: remove dead codeAdrian Bunk2006-08-15
| | | | | | | | This patch removes some obvious dead code spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Josh Boyer <jwboyer@gmail.com>
* [JFFS2][XATTR] Fix xd->refcnt race conditionKaiGai Kohei2006-06-29
| | | | | | | | | | | | | | | | | When xd->refcnt is checked whether this xdatum should be released or not, atomic_dec_and_lock() is used to ensure holding the c->erase_completion_lock. This fix change a specification of delete_xattr_datum(). Previously, it's only called when xd->refcnt equals zero. (calling it with positive xd->refcnt cause a BUG()) If you applied this patch, the function checks whether xd->refcnt is zero or not under the spinlock if necessary. Then, it marks xd DEAD flahs and links with xattr_dead_list or releases it immediately when xd->refcnt become zero. Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2][XATTR] Re-define xd->refcnt as atomic_tKaiGai Kohei2006-06-27
| | | | | | | | | | | | | | In jffs2_release_xattr_datum(), it refers xd->refcnt to ensure whether releasing xd is allowed or not. But we can't hold xattr_sem since this function is called under spin_lock(&c->erase_completion_lock). Thus we have to refer it without any locking. This patch redefine xd->refcnt as atomic_t. It enables to refer xd->refcnt without any locking. Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2][XATTR] rid unnecessary writing of delete marker.KaiGai Kohei2006-06-27
| | | | | | | | | | | | | | | In the followinf situation, an explicit delete marker is not necessary, because we can certainlly detect those obsolete xattr_datum or xattr_ref on next mounting. - When to delete xattr_datum node. - When to delete xattr_ref node on removing inode. - When to delete xattr_ref node on updating xattr. This patch rids writing delete marker in those situations. Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2][XATTR] using 'delete marker' for xdatum/xref deletionKaiGai Kohei2006-06-27
| | | | | | | | | | | | | | | | | - When xdatum is removed, a new xdatum with 'delete marker' is written. (version==0xffffffff means 'delete marker') - When xref is removed, a new xref with 'delete marker' is written. (odd-numbered xseqno means 'delete marker') - delete_xattr_(datum/xref)_delay() are new deletion functions are added. We can only use them if we can detect the target obsolete xdatum/xref as a orphan or errir one. (e.g when inode deletion, or detecting crc error) [1/3] jffs2-xattr-v6-01-delete_marker.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Fix 64-bit size_t problems in XATTR code.David Woodhouse2006-05-25
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Reduce visibility of raw_node_ref to upper layers of JFFS2 code.David Woodhouse2006-05-23
| | | | | | | | | | | | | As the first step towards eliminating the ref->next_phys member and saving memory by using an _array_ of struct jffs2_raw_node_ref per eraseblock, stop the write functions from allocating their own refs; have them just _reserve_ the appropriate number instead. Then jffs2_link_node_ref() can just fill them in. Use a linked list of pre-allocated refs in the superblock, for now. Once we switch to an array, it'll just be a case of extending that array. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Remove flash offset argument from various functions.David Woodhouse2006-05-22
| | | | | | | | We don't need the upper layers to deal with the physical offset. It's _always_ c->nextblock->offset + c->sector_size - c->nextblock->free_size so we might as well just let the actual write functions deal with that. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Extend jffs2_link_node_ref() to link into per-inode list too.David Woodhouse2006-05-22
| | | | | | | | | | | Let's avoid the potential for forgetting to set ref->next_in_ino, by doing it within jffs2_link_node_ref() instead. This highlights the ugliness of what we're currently doing with xattr_datum and xattr_ref structures -- we should find a nicer way of dealing with that. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2] Add length argument to jffs2_add_physical_node_ref()David Woodhouse2006-05-20
| | | | | | | | If __totlen is going away, we need to pass the length in separately. Also stop callers from needlessly setting ref->next_phys to NULL, since that's done for them... and since that'll also be going away soon. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [JFFS2][XATTR] Fix obvious typoKaiGai Kohei2006-05-13
| | | | | | [2/2] jffs2-xattr-v5.2-02-fix_obvious_typo.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
* [JFFS2][XATTR] Unify each file header part with any jffs2 file.KaiGai Kohei2006-05-13
| | | | | | | | Unify each file header part with any jffs2 file. [7/10] jffs2-xattr-v5.1-07-unify_file_header.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
* [JFFS2][XATTR] Remove jffs2_garbage_collect_xattr(c, ic)KaiGai Kohei2006-05-13
| | | | | | | | | | | | | | | Remove jffs2_garbage_collect_xattr(c, ic). jffs2_garbage_collect_xattr_datum/ref() are called from gc.c directly. In original implementation, jffs2_garbage_collect_xattr(c, ic) returns with holding a spinlock if 'ic' is inode_cache. But it returns after releasing a spinlock if 'ic' is xattr_datum/ref. It looks so confusable behavior. Thus, this patch makes caller manage locking/unlocking. [5/10] jffs2-xattr-v5.1-05-update_xattr_gc.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
* [JFFS2][XATTR] Remove 'struct list_head ilist' from jffs2_inode_cache.KaiGai Kohei2006-05-13
| | | | | | | | This patch can reduce 4-byte of memory usage per inode_cache. [4/10] jffs2-xattr-v5.1-04-remove_ilist_from_ic.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
* [JFFS2][XATTR] XATTR support on JFFS2 (version. 5)KaiGai Kohei2006-05-13
This attached patches provide xattr support including POSIX-ACL and SELinux support on JFFS2 (version.5). There are some significant differences from previous version posted at last December. The biggest change is addition of EBS(Erase Block Summary) support. Currently, both kernel and usermode utility (sumtool) can recognize xattr nodes which have JFFS2_NODETYPE_XATTR/_XREF nodetype. In addition, some bugs are fixed. - A potential race condition was fixed. - Unexpected fail when updating a xattr by same name/value pair was fixed. - A bug when removing xattr name/value pair was fixed. The fundamental structures (such as using two new nodetypes and exclusion mechanism by rwsem) are unchanged. But most of implementation were reviewed and updated if necessary. Espacially, we had to change several internal implementations related to load_xattr_datum() to avoid a potential race condition. [1/2] xattr_on_jffs2.kernel.version-5.patch [2/2] xattr_on_jffs2.utils.version-5.patch Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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