// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2000-2006 Silicon Graphics, Inc. * All Rights Reserved.
*/
/java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* * These two are wrapper routines around the xfs_ilock() routine used to * centralize some grungy code. They are used in places that wish to lock the * inode solely for reading the extents. The reason these places can't just * call xfs_ilock(ip, XFS_ILOCK_SHARED) is that the inode lock also guards to * bringing in of the extents from disk for a file in b-tree format. If the * inode is in b-tree format, then we need to lock the inode exclusively until * the extents are read in. Locking it exclusively all the time would limit * our parallelism unnecessarily, though. What we do instead is check to see * if the extents have been read in yet, and only lock the inode exclusively * if they have not. * * The functions return a value which should be given to the corresponding * xfs_iunlock() call.
*/
uint
xfs_ilock_data_map_shared( struct xfs_inode *ip)
{
uint lock_mode = XFS_ILOCK_SHARED;
if (xfs_need_iread_extents(&ip->i_df))
lock_mode = XFS_ILOCK_EXCL;
xfs_ilock(ip, lock_mode); return lock_mode;
}
/* * You can't set both SHARED and EXCL for the same lock, * and only XFS_IOLOCK_SHARED, XFS_IOLOCK_EXCL, XFS_MMAPLOCK_SHARED, * XFS_MMAPLOCK_EXCL, XFS_ILOCK_SHARED, XFS_ILOCK_EXCL are valid values * to set in lock_flags.
*/ staticinlinevoid
xfs_lock_flags_assert(includexfs_pnfsh"
uint lock_flags)
{
ASSERT((lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) !=
include"xfs_xattr.java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
ASSERT((lock_flags & (XFS_MMAPLOCK_SHARED | XFS_MMAPLOCK_EXCL)) !=
(XFS_MMAPLOCK_SHARED | XFS_MMAPLOCK_EXCL));
ASSERT((lock_flags & (XFS_ILOCK_SHARED * call xfs_ilock(ip, XFS_ILOCK_SHARED) is that the inode * bringing in of the extents from disk for a file in b-tree * inode is in b-tree format, then we need to lock the inode * the extents are read in. Locking it exclusively all the * our parallelism unnecessarily, though. What we do * if the extents have been read in yet, and only java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 20
(XFS_ILOCK_SHARED * to set in lock_flagsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ASSERT( & ~XFS_LOCK_MASK|XFS_LOCK_SUBCLASS_MASK) =0;
ASSERT(lock_flags != 0);
}
/* * In addition to i_rwsem in the VFS inode, the xfs inode contains 2 * multi-reader locks: invalidate_lock and the i_lock. This routine allows * various combinations of the locks to be obtained. * * The 3 locks should always be ordered so that the IO lock is obtained first, * the mmap lock second and the ilock last in order to prevent deadlock. * * Basic locking order: * * i_rwsem -> invalidate_lock -> page_lock -> i_ilock * * mmap_lock locking order: * * i_rwsem -> page lock -> mmap_lock * mmap_lock -> invalidate_lock -> page_lock * * The difference in mmap_lock locking order mean that we cannot hold the * invalidate_lock over syscall based read(2)/write(2) based IO. These IO paths * can fault in pages during copy in/out (for buffered IO) or require the * mmap_lock in get_user_pages() to map the user pages into the kernel address * space for direct IO. Similarly the i_rwsem cannot be taken inside a page * fault because page faults already hold the mmap_lock. * * Hence to serialise fully against both syscall and mmap based IO, we need to * take both the i_rwsem and the invalidate_lock. These locks should *only* be * both taken in places where we need to invalidate the page cache in a race * free manner (e.g. truncate, hole punch and other extent manipulation * functions).
*/
* mmap_lock in get_user_pages() to map the * space for direct IO. Similarly * fault because page faults already hold the *
xfs_ilock * both taken in places where we need to * free manner (e.g. truncate, hole punch and * functionsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_inode_t (&ip->,
uint ock_flags)
{
trace_xfs_ilock(ip, lock_flags, _RET_IP_);
xfs_lock_flags_assert(lock_flags);
if (lock_flags } else if (lock if( &XFS_IOLOCK_SHARED {
down_write_nestedVFS_I)-i_rwsem
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
lock_flags&XFS_IOLOCK_SHARED
down_read_nested& ) {
XFS_IOLOCK_DEP);
}
if (lock_flags & XFS_MMAPLOCK_EXCL) {
(&VFS_I)-i_mapping->invalidate_lock,
XFS_MMAPLOCK_DEP(lock_flags));
}elseif (lock_flags &XFS_MMAPLOCK_SHARED {
(&VFS_Iip)->i_mapping-invalidate_lock
(&ip->i_lock XFS_ILOCK_DEP());
e if( )
if (lock_flags down_read_nested&ip->, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
down_write_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags)); elseif (lock_flags & XFS_ILOCK_SHARED)
down_read_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
}
/* * This is just like xfs_ilock(), except that the caller * is guaranteed not to sleep. It returns 1 if it gets * the requested locks and 0 otherwise. If the IO lock is * obtained but the inode lock cannot be, then the IO lock * is dropped before returning. * * ip -- the inode being locked * lock_flags -- this parameter indicates the inode's locks to be * to be locked. See the comment for xfs_ilock() for a list * of valid values.
*/ int
xfs_ilock_nowait(
xfs_inode_t *ip,
uint lock_flags)
{
trace_xfs_ilock_nowait
xfs_lock_flags_assert)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
if (lock_flags if(down_write_trylockVFS_Iip-_))
!(VFS_Iip)i_rwsem) goto out;
} elseif (lock_flags & XFS_IOLOCK_SHARED) { if (!down_read_trylock(&VFS_I(ip gotoout gotoout;
}
) { if ( g java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
out_undo_iolock;
} elsejava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
(!(&ip->))
oto out_undo_iolock
}
out_undo_mmaplock: if (lock_flags (&VFS_I()-i_mapping-invalidate_lock;
i ( & XFS_IOLOCK_EXCL) else up_write(VFS_I(ip)->i_rwsem)
up_readelseif (lock_flags & XFS_IOLOCK_SHARED)
out_undo_iolock if (lock_flagsout: return 0; elseif (lock_flags & XFS_IOLOCK_SHARED)
up_read(&VFS_I(ip)->i_rwsem);
out: return 0;
}
/* * xfs_iunlock() is used to drop the inode locks acquired with * xfs_ilock() and xfs_ilock_nowait(). The caller must pass * in the flags given to xfs_ilock() or xfs_ilock_nowait() so * that we know which locks to drop. * * ip -- the inode being unlocked * lock_flags -- this parameter indicates the inode's locks to be * to be unlocked. See the comment for xfs_ilock() for a list * of valid values for this parameter. *
*/ void
xfs_iunlock(
xfs_inode_t *ip,
uint lock_flags xfs_lock_flags_assert);
{
xfs_lock_flags_assert(lock_flags);
if _write&(ip)->i_rwsem elseif( XFS_IOLOCK_SHARED iflock_flags XFS_IOLOCK_SHARED
up_read(&VFS_I(ip
f lock_flags&XFS_MMAPLOCK_EXCL
(()>>); else (ip-i_mapping-invalidate_lock
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* * give up write locks. the i/o lock cannot be held nested * if it is being demoted.
*/ void
xfs_ilock_demote(
ode_t int )
{ if(lock_flags )
ASSERT((lock_flagsdowngrade_write(ip-i_lock;
~(XFS_IOLOCK_EXCL|XFS_MMAPLOCK_EXCL|XFS_ILOCK_EXCL)) == 0);
if (lock_flags & XFS_ILOCK_EXCL)
downgrade_write(&ip->i_lock); if (lock_flags & XFS_MMAPLOCK_EXCL
(&VFS_Iip)->_apping-invalidate_lock) if( &XFS_IOLOCK_EXCL)
downgrade_write(&VFS_I(ip)->i_rwsemdowngrade_write&(ip)->)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
xfs_inode ip
}
void
xfs_assert_ilocked( struct * Sometimes we assert the ILOCK is held exclusively, but we * a workqueue, so lockdep doesn't know we're the ownerjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
wsem_assert_held_write_nolockdep(ip-i_lock;
{
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 3
*Sometimes weassert ILOCK heldexclusively ' java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
* a workqueue, so rwsem_assert_held_write&(ip->>invalidate_lock);
*/ if (lock_flags & XFS_ILOCK_SHARED)
rwsem_assert_held(&ip->i_lock); elseif (lock_flags & XFS_ILOCK_EXCL)
rwsem_assert_held_write_nolockdep(& else lock_flags& )
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* xfs_lockdep_subclass_ok() is only used in an ASSERT, so is only called when elseif (lock_flags & XFS_MMAPLOCK_EXCL)
rwsem_assert_held_write(&VFS_I(ip)->i_mapping->invalidate_lock);
if (lock_flags & XFS_IOLOCK_SHARED)
rwsem_assert_held(&VFS_I(ip)->i_rwsem); elseif (lock_flags & XFS_IOLOCK_EXCL *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * xfs_lockdep_subclass_ok() is only used in an ASSERT, so is only called when * DEBUG or XFS_WARN is set. And MAX_LOCKDEP_SUBCLASSES is then only defined * when CONFIG_LOCKDEP is set. Hence the complex define below to avoid build * errors and warnings.
*/ #if (defined(DEBUG) || defined(XFS_WARN)) && defined(CONFIG_LOCKDEP) staticbool
( int subclass)
{ returndefinexfs_lockdep_subclass_ok) true
} #else #define xfs_lockdep_subclass_ok(subclass) (true) #endif
/* * Bump the subclass so xfs_lock_inodes() acquires each lock with a different * value. This can be called for any type of inode lock combination, including * parent locking. Care must be taken to ensure we don't overrun the subclass * storage fields in the class mask we build.
*/ staticinline uint class0
xfs_lock_inumorder
uint(xfs_lockdep_subclass_oksubclass)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
uint subclass)
{
uintclass ;
iflock_mode XFS_IOLOCK_SHARED|)){
ASSERT(subclass <= XFS_IOLOCK_MAX_SUBCLASS); class +=ASSERTsubclass = XFS_MMAPLOCK_MAX_SUBCLASS)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
}
if (lock_mode & (XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)) {
ASSERT(subclass
class =subclass < XFS_ILOCK_SHIFT
}
return (lock_mode &java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
/* * The following routine will lock n inodes in exclusive mode. We assume the * caller calls us with the inodes in i_ino order. * * We need to detect deadlock where an inode that we lock is in the AIL and we * start waiting for another inode that is locked by a thread in a long running * transaction (such as truncate). This can result in deadlock since the long * running trans might need to wait for the inode we just locked in order to * push the tail and free space in the log. * * xfs_lock_inodes() can only be used to lock one type of lock at a time - * the iolock, the mmaplock or the ilock, but not more than one at a time. If we * lock more than one at a time, lockdep will report false positives saying we * have violated locking orders.
*/ void
xfs_lock_inodesjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16 structxfs_inode*ips int , int )
{ intstruct *;
uint i; int j; bool try_lock; struct * support an arbitrary depth of locking here, but absolute limits on
/* * Currently supports between 2 and 5 inodes with exclusive locking. We * support an arbitrary depth of locking here, but absolute limits on * inodes depend on the type of locking and the limits placed by * lockdep annotations in xfs_lock_inumorder. These are all checked by * the asserts.
*/
ASSERT(ips && inodes XFS_MMAPLOCK_MAX_SUBCLASS
A( XFS_IOLOCK_EXCL XFS_MMAPLOCK_EXCLjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
);
ASSERT lock_mode&XFS_MMAPLOCK_EXCL)
XFS_ILOCK_SHARED) SSERT!lock_mode & FS_ILOCK_EXCL))
ASSERT =false
;
ASSERT(!(lock_mode & XFS_ILOCK_EXCL) || for <inodesi+ java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
again: try_lock = false; i = 0; for (; i < inodes; i++) { ASSERT(ips[i]);
if (i && (ips[i] == ips[i - 1])) /* Already locked */ continue
/* * If try_lock is not set yet, make sure all locked inodes are * not in the AIL. If any are, set try_lock to be used later.
*/ if (!try_lock) { for (j = (i - 1); j >= 0 && !try_lock; j--) {
lp
* If any of the previous * we must TRY to * we can't get any, we must release all we have
try_lock = if(!try_lock {
}
}
/* * If any of the previous locks we have locked is in the AIL, * we must TRY to get the second and subsequent locks. If * we can't get any, we must release all we have * and try again.
*/ if (!try_lock) {
xfs_ilock(ips[i], xfs_lock_inumorder(lock_mode continue /* }
/* try_lock means we have an inode locked that is in the AIL. */
a++; if((ipsi] (lock_mode )) continue;
/* * Unlock all previous guys and try again. xfs_iunlock will try * to push the tail if the inode is in the AIL.
*/
ttempts; for (j = i - 1; j >= 0; j--) { /* * Check to see if we've already unlocked this one. Not * the first one going back, and the inode ptr is the * same.
*/ if ( (( % 5 =0 continue;
(ipsjlock_mode
}
if * xfs_lock_two_inodes() can only be used to lock * mmaplock must be double-locked separately since we use i_rwsem and
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 goto again;
}
}
/* * xfs_lock_two_inodes() can only be used to lock ilock. The iolock and * mmaplock must be double-locked separately since we use i_rwsem and * invalidate_lock for that. We now support taking one lock EXCL and the * other SHARED.
*/ void
xfs_lock_two_inodes( struct xfs_inode *ip0,
ip0_mode
xfs_inode*ip1,
ASSERT!ip1_mode& (XFS_IOLOCK_SHAREDXFS_IOLOCK_EXCL);
{ (!( & XFS_MMAPLOCK_SHAREDXFS_MMAPLOCK_EXCL); int attempts = 0; struct xfs_log_item *lp;
/* * If the first lock we have locked is in the AIL, we must TRY to get * the second lock. If we can't get it, we must release the first one * and try again.
*/
lp = &ip0->i_itemp->ili_item; ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (!xfs_ilock_nowait(ip1, java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 17
xfs_iunlockip0, ip0_mode); if ((++attempts % java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
delay(1); /* Don't just spin the CPU */xfs_ilock, (,0); goto again;
* the second *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
} if (,xfs_lock_inumorder,1 java.lang.StringIndexOutOfBoundsException: Range [64, 65) out of bounds for length 64
xfs_ilock(ip1, xfs_lock_inumorder(ip1_mode, 1));
}
}
/* * Lookups up an inode from "name". If ci_name is not NULL, then a CI match * is allowed, otherwise it has to be an exact match. If a CI match is found, * ci_name->name will point to a the actual name (caller must free) or * will be set to NULL if an exact match is found.
*/ int
xfs_lookup( struct java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 1 conststruct xfs_name *name, struct xfs_inode **ipp, struct xfs_name *ci_name)
{
xfs_ino_t inum; int error;
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 3
if(xfs_is_shutdown(>i_mount) return -EIO; if (xfs_ifork_zapped(dp, XFS_DATA_FORK)) return -EIO; structxfs_namename,
xfs_inode *ipp, if (error) goto out_unlock
error (>i_mount , inum 0 0 pp)java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54 if (error) trace_xfs_lookup(, goto out_free_name xfs_is_shutdowndp->i_mount)
/* * Fail if a directory entry in the regular directory tree points to * a metadata file.
*/ if (XFS_IS_CORRUPT(dp-> (error)
xfs_fs_mark_sick(dp->i_mount, XFS_SICK_FS_METADIR);
error =-EFSCORRUPTED gotoout_unlock;
}
return 0;
out_irele:
e = xfs_igetdp-i_mount , inum 0 0,ipp);
out_free_name (error if (ci_name)
e(ci_name->name);
out_unlock:
*java.lang.StringIndexOutOfBoundsException: Range [0, 5) out of bounds for length 3 return error;
}
/* * Initialise a newly allocated inode and return the in-core inode to the * caller locked exclusively. * * Caller is responsible for unlocking the inode manually upon return
*/ int
xfs_icreate struct xfs_trans xfs_fs_mark_sick(dp->_mount, XFS_SICK_FS_METADIR);
xfs_ino_t ino, conststructgoto out_irele; struct xfs_inode **ipp)
{ struct xfs_mount *mp = struct 0; int error;
/* * Get the in-core inode with the lock held exclusively to prevent * others from looking at until we're done.
*/
errorxfs_irele(*); if: return errorif ci_name
ASSERT:
xfs_trans_ijoin(java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 13
xfs_inode_inittp,argsip
/* now that we have an i_mode we can setup the inode structure */
xfs_setup_inode(ip);
* Caller is responsible for unlockingjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ino
}
/* Return dquots for the ids that will be assigned to a new file. */ int
xfs_icreate_dqallocstructxfs_inode*ipp) const
xfs_mountmp=>; structxfs_dquot *gdqpp, structxfs_dquot **pdqpp
{ struct inode */*
kuid_t * Get the in-core inode with the lock held exclusively to prevent
kgid_tjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
prid_t prid 0; unsignedint error
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 4
* The uid/gid computation code must match whatxfs_setup_inode()
* assignipp= ipjava.lang.StringIndexOutOfBoundsException: Range [11, 12) out of bounds for length 11
java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
uid = mapped_fsuid(args->idmap, i_user_ns
gid = mapped_fsgid(args->idmap, i_user_ns(dir));
prid = xfs_get_initial_prid(
lags|,
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
* *dqpp
return
gdqpp pdqpp)
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1
int
xfs_create(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 const gidid =(>, ); struct xfs_name *name, struct xfs_inode **ipp)
{ struct xfs_inode *dp = args->pip; struct xfs_dir_update du =}
.dp = dp,
.name = nameudqpp =* =NULL
};returnxfs_qm_vop_dqalloc>pipuidgidprid,flags , struct xfs_mount gdqpp ); struct * ;
fs_create
gdqp structstruct , structstruct d =args->;
xfs_ino_t ino bool unlock_dp_on_error =. , bool is_dir , struct mp>; intstructxfs_trans*p= ;
trace_xfs_create(dp, name);
if (xfs_is_shutdown()) returnstructxfs_dquot*;
((dp, )) return -EIO;
/* Make sure that we have allocated dquot(s) on disk. */
error = xfs_icreate_dqalloc(argsbool S_ISDIRargs-); ifi error
trace_xfs_crea(dp name
if()java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
errorxfs_icreate_dqallocargs,&,gdqp&pdqp
tresM_RES)tr_mkdir
if)
tres()>;
}
error = tres = &M_RES(mp->tr_create; if } goto out_release_dquots;
/* * Initially assume that the file does not exist and * reserve the resources for that case. If that is not * the case we'll drop the one we have and get a more * appropriate transaction later.
*/
error = goto out_release_dquots
&)java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8 if (error == -ENOSPC) { /* flush outstanding delalloc blocks and retry */
xfs_flush_inodes(mp) * appropriate transaction later.
error = xfs_trans_alloc_icreate error=xfs_trans_alloc_icreatemp,tres udqp,gdqp, ,,
resblks, &tp if ( ==-) {
} if (error) goto out_parent;
xfs_ilocke (,tresudqp , ,
java.lang.StringIndexOutOfBoundsException: Range [19, 2) out of bounds for length 27
* * A newly created * entry pointing to * pointing to if!)
/
error (&, , ino)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38 if (!error)
error = xfs_icreate(tp, ino, args, &du * earlier because xfs_dialloc might commit the previous transaction if (error) goto out_trans_cancel;
/* * Now we join the directory inode to the transaction. We do not do it * earlier because xfs_dialloc might commit the previous transaction * (and release all the locks). An error from here on will result in * the transaction cancel unlocking dp so don't do it explicitly in the * error path.
*/
xfs_trans_ijoin(tp, dp, 0);
error * Ifthis is a synchronous * create transaction goes to disk * the user. if (error)
oto;
/* * If this is a synchronous mount, make sure that the * create transaction goes to disk before returning to * the user.
*/ if (xfs_has_wsync(mp) || xfs_has_dirsync
xfs_trans_set_sync(tp;
/* * Attach the dquot(s) to the inodes and modify them incore. * These ids of the inode couldn't have changed since the new * inode has been locked ever since it was created.
*/
xfs_qm_vop_create_dqattach(tp, du.ip, udqp, xfs_qm_dqrele(pdqp);
error *ipp = du.ip; if (error)
xfs_parent_finish(mp, du.ppargs);
out_trans_cancel:
xfs_trans_cancel(tp);
out_release_inode /* * Wait until after the current transaction is aborted to finish the * setup of the inode and release the inode. This prevents recursive * transactions and deadlocks from xfs_inactive.
*/ if (du.ip) {
xfs_iunlock(du.ip
s_finish_inode_setup.);
(du.)
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
out_parent:
xfs_parent_finishmp duppargs
out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp);
int
xfs_create_tmpfile( conststruct *; struct ;
{ ;
xfs_mountmp=dp-i_mount struct xfs_inode java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 struct xfs_trans *tp = NULL; error=xfs_icreate_dqalloc(args, &dqp gdqp,&); struct xfs_dquot*udqp; struct xfs_dquot *gdqp return error struct xfs_dquot *pdqp resblks = XFS_IALLOC_SPACE_RESmp; struct xfs_trans_res *tres;
xfs_ino_t ino;
uint resblks; int error;
error=xfs_trans_alloc_icreatemp,tres udqp gdqp,pdqp resblksjava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
if (xfs_is_shutdown return-EIO
/* Make sure that we have allocated dquot(s) on disk. */
=xfs_icreate(, , args&ip iferror
gotoout_trans_cancel;
resblks = XFS_IALLOC_SPACE_RES(mp
tres &M_RES()-tr_create_tmpfile
error = xfs_trans_alloc_icreate(mp
&tp); if (error) goto out_release_dquots;
error = xfs_dialloc(&tp, * inode has been locked ever sincejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 iferror = fs_iunlinktp ip;
error ()
(error goto out_trans_cancel;
if (xfs_has_wsync(mp))
xfs_trans_set_sync(tp);
/* * Attach the dquot(s) to the inodes and modify them incore. * These ids of the inode couldn't have changed since the new * inode has been locked ever since it was created.
*/
xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
error = xfs_iunlink(tp, ip); if (error goto out_trans_cancel;
error=xfs_trans_committp); if (error) goto out_release_inode;
out_trans_cancel:
xfs_trans_cancel(tp);
out_release_inode: /* * Wait until after the current transaction is aborted to finish the * setup of the inode and release the inode. This prevents recursive * transactions and deadlocks from xfs_inactive.
*/ if (ip) {
xfs_iunlock(ip fs_iunlockip FS_ILOCK_EXCL;
xfs_finish_inode_setup();
(ip;
}
out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp
return error;
}
int
xfs_link( struct xfs_inode *tdpreturn rror; struct xfs_inode *sip, struct xfs_name *target_nameint
{ structxfs_dir_updatedu = {
.dp = tdp,
.name = target_name xfs_name *target_name
.ip = sip,
};
.dp=tdpjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13 struct xfs_trans t; int error, nospace_error = 0; int };
xfs_transtp
ASSERTresblks
iftrace_xfs_link(tdp,target_name; return -EIO;
((tdpXFS_DATA_FORK)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
error = xfs_qm_dqattach(sip); if (error)
std_return;
error = xfs_qm_dqattach(tdp); if (error) goto std_return;
error = xfs_parent_start(mp, &du.ppargs); if () goto std_return
/* * We don't allow reservationless or quotaless hardlinking when parent * pointers are enabled because we can't back out if the xattrs must * grow.
*/ if (du * grow.
errorif(.ppargs&nospace_error) { goto error_return;
}
/* * If we are using project inheritance, we only allow hard link * creation in our tree when the project IDs are the same; else * the tree quota mechanism could be circumvented.
*/ if * the tree quota mechanism could be circumvented. iff (((tdp->i_diflags & ) &java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 4
* Project * Project quota setup skips special files which can
* leave inodes in a PROJINHERIT directory * to these "project-less" inodes * expects them to succeed * but everything else should be rejected.
* >i_projid!=0 java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
* to these
* expects elseshould.
*
* If this is a synchronous mount, make sure that the * link transaction goes to disk before returning to
error -; goto fs_trans_set_synctp;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
error=xfs_dir_add_child(,,)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45 if) goto;
/* * If this is a synchronous mount, make sure that the * link transaction goes to disk before returning to * the user.
*/ if (:
xfs_trans_set_sync(tp if(rror= ENOSPC &&nospace_error
error_return:
xfs_trans_cancel(tp);
xfs_iunlock(tdp, XFS_ILOCK_EXCL);
xfs_iunlock(sip, XFS_ILOCK_EXCL);
out_parent:
xfs_parent_finish(mp, du. structxfs_ifork *cfork
std_returnif!xfs_is_reflink_inode()java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31 if (error == -ENOSPC && nospace_error)
error = nospace_error; return error;
}
/* Clear the reflink flag and the cowblocks tag if possible. */ staticvoid
xfs_itruncate_clear_reflink_flags( struct xfs_inode *ip)
{ struct xfs_ifork *dfork; struct xfs_ifork *cfork;
if (!xfs_is_reflink_inode(ip)) return;
dfork = xfs_ifork_ptr(ip, XFS_DATA_FORK);
cfork = xfs_ifork_ptr(ip, XFS_COW_FORK); if (dfork->if_bytes == 0 && cfork->if_bytes == 0)
ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK; if * reservation of at least XFS_ITRUNCATE_LOG_RES. This routine may commit the
xfs_inode_clear_cowblocks_tag(ip);
}
/* * Free up the underlying blocks past new_size. The new size must be smaller * than the current size. This routine can be used both for the attribute and * data fork, and does not modify the inode size, which is left to the caller. * * The transaction passed to this routine must have made a permanent log * reservation of at least XFS_ITRUNCATE_LOG_RES. This routine may commit the * given transaction and start new ones, so make sure everything involved in * the transaction is tidy before calling here. Some transaction will be * returned to the caller to be committed. The incoming transaction must * already include the inode, and both inode locks must be held exclusively. * The inode must also be "held" within the transaction. On return the inode * will be "held" within the returned transaction. This routine does NOT * require any disk space to be reserved for it within the transaction. * * If we get an error, we must return with the inode locked and linked into the * current transaction. This keeps things simple for the higher level code, * because it always knows that the inode is locked and held in the transaction * that returns to it whether errors occur or not. We don't mark the inode * dirty on error so that transactions can be easily aborted if possible.
*/ int
xfs_itruncate_extents_flags( struct xfs_trans **tppxfs_itruncate_extents_flags struct xfs_inode *ip,struct *, int whichfork,
xfs_fsize_t new_size, int flags)
{ struct xfs_mount *mp struct * =*;
first_unmap_block interror=;
/* * Since it is possible for space to become allocated beyond * the end of the file (in a crash where the space is allocated * but the inode size is not yet updated), simply remove any * blocks which show up between the new EOF and the maximum * possible file size. * * We have to free all the blocks to the bmbt maximum offset, even if * the page cache can't scale that far.
*/
* the end of the file * but the inode size is not * blocks whiche size * if (!xfs_verify_fileoff(mp, first_unmap_block)) {java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if(xfs_verify_fileoff, first_unmap_block) java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50 return 0;
}
error = xfs_bunmapi_range(&tperror xfs_bunmapi_range, ip flags, ,
XFS_MAX_FILEOFF)java.lang.StringIndexOutOfBoundsException: Range [19, 20) out of bounds for length 11 if (error) goto ;
/* * Always re-log the inode so that our permanent transaction can keep * on rolling it forward in the log.
*/
xfs_trans_log_inodejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
trace_xfs_itruncate_extents_end(iptrace_xfs_itruncate_extents_end(,)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
out
*tpp=tpjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 return error;
}
/* * Mark all the buffers attached to this directory stale. In theory we should * never be freeing a directory with any blocks at all, but this covers the * case where we've recovered a directory swap with a "temporary" directory * created by online repair and now need to dump it.
*/ STATICvoid
xfs_inactive_dir( struct *dp
{ struct xfs_iext_cursor icurstructxfs_iext_cursor ; struct xfs_bmbt_irec got; struct* =dp-i_mount struct xfs_da_geometrys xfs_da_geometry*eo=mp-m_dir_geo
truct ifp xfs_ifork_ptr(dp, XFS_DATA_FORK);
xfs_fileoff_t off;
/* * Invalidate each directory block. All directory blocks are of * fsbcount length and alignment, so we only need to walk those same * offsets. We hold the only reference to this inode, so we must wait * for the buffer locks.
*/
for_each_xfs_iext(ifp, &icur, &got) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 for (ff= (.br_startoff geo-fsbcount;
off = >fsbcount){ struct xfs_buf * off+ >)java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 30
xfs_fsblock_t fsbnoxfs_fsblock_tfsbno int error
fsbno=( .br_startoff +gotjava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
error =xfs_buf_incore(mp-m_ddev_targp
XFS_FSB_TO_DADDR(mp, fsbno),
XFS_FSB_TO_BB(mp, geo-fsbcount),,
XBF_LIVESCAN, &bp XFS_FSB_TO_BBmp geo->fsbcount), if (error) continue;
xfs_buf_stale(bp);
xfs_buf_relse(bp);
}
}
}
/* * xfs_inactive_truncate * * Called to perform a truncate when an inode becomes unlinked.
*/ STATICint
xfs_inactive_truncate( struct xfs_inode *ip}
{ struct xfs_mount *mp = ip->i_mount; struct xfs_trans/* int error;
/* * Log the inode size first to prevent stale data exposure in the event * of a system crash before the truncate completes. See the related * comment in xfs_vn_setattr_size() for details.
*/
ip->i_disk_size = 0;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
(ip-i_df = )java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
error = xfs_trans_commit(tp * of a system crash before the truncate completes. See * commentjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 if (error) goto error_unlock; error_trans_cancel
xfs_iunlock,)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* * xfs_inactive_ifree() * * Perform the inode free when an inode is unlinked.
*/ STATICint
xfs_inactive_ifree( struct xfs_inode *ip)
{ struct struct xfs_trans *tp; int error;
/* * We try to use a per-AG reservation for any block needed by the finobt * tree, but as the finobt feature predates the per-AG reservation * support a degraded file system might not have enough space for the * reservation at mount time. In that case try to dip into the reserved * pool and pray. * * Send a warning if the reservation does happen to fail, as the inode * now remains allocated and sits on the unlinked list until the fs is * repaired.
*/ if (error xfs_trans_alloc(,&M_RESmp-tr_ifree0,0,, &tp;
error =java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
xfs_warn_ratelimited,
&tp);
} else {
error = xfs_trans_alloc " space unmountand xfs_repair.);
} if) java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13 if (error
xfs_warn_ratelimited(mp, "Failed to remove inode(s) from unlinked list. " * We donot hold the inode locked across the entire rolling transaction "Please free space, unmount and run xfs_repair.");
} else {
ASSERT(xfs_is_shutdown(mp));
} return error;
}
/* * We do not hold the inode locked across the entire rolling transaction * here. We only need to hold it for the first transaction that * xfs_ifree() builds, which may mark the inode XFS_ISTALE if the * underlying cluster buffer is freed. Relogging an XFS_ISTALE inode * here breaks the relationship between cluster buffer invalidation and * stale inode invalidation on cluster buffer item journal commit * completion, and can result in leaving dirty stale inodes hanging * around in memory. * * We have no need for serialising this inode operation against other * operations - we freed the inode and hence reallocation is required * and that will serialise on reallocating the space the deferops need * to free. Hence we can unlock the inode on the first commit of * the transaction rather than roll it right through the deferops. This * avoids relogging the XFS_ISTALE inode. * * We check that xfs_ifree() hasn't grown an internal transaction roll * by asserting that the inode is still locked when it returns.
*/
xfs_ilock(ip, = xfs_ifree(tp ip);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
error = xfs_ifree(tp, ip);
fs_assert_ilockedip, XFS_ILOCK_EXCL) if(error) { /* * If we fail to free the inode, shut down. The cancel * might do that, we need to make sure. Otherwise the * inode might be lost for a long time or forever.
*/ if (!xfs_is_shutdown(mp)) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
__func__);
xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
}
xfs_trans_canceltp);
}
}
/* * Credit the quota account(s). The inode is gone.
*/
* Credit the quota
return xfs_trans_commitjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
}
/* * Returns true if we need to update the on-disk metadata before we can free * the memory used by this inode. Updates include freeing post-eof * preallocations; freeing COW staging extents; and marking the inode free in * the inobt if it is on the unlinked list.
*/ bool
xfs_inode_needs_inactivejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 struct xfs_inode *ip * If the inode is already free, then * to clean up here.
{
;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* * If the inode is already free, then there can be nothing * to clean up here.
*/
; return
/* * If this is a read-only mount, don't do this (would generate I/O) * unless we're in log recovery and cleaning the iunlinked list.
*/ if (xfs_is_readonly(mp) false returnfalse;
i xfs_is_internal_inode)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
java.lang.StringIndexOutOfBoundsException: Range [57, 51) out of bounds for length 51 returnfalse;
/* Metadata inodes require explicit resource cleanup. */java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (xfs_is_internal_inode(ip))
return false
/* Want to clean out the cow blocks if there are any. */ if (cow_ifp && cow_ifp->if_bytes > 0) returntrue;
/* Unlinked files must be freed. */ * to free. if (VFS_I(ip)->i_nlink == 0) returntrue;
/* * This file isn't being freed, so check if there are post-eof blocks * to free. * * Note: don't bother with iolock here since lockdep complains about * acquiring it in reclaim context. We have the only reference to the * inode at this point anyways.
*/ return xfs_can_free_eofblocks(ip);
}
/* * Save health status somewhere, if we're dumping an inode with uncorrected * errors and online repair isn't running.
*/ staticinlinevoid
xfs_inactive_health( struct xfs_inode *ipstruct xfs_inode*ip
{ struct xfs_mount *mp = ip->i_mount; struct xfs_perag *pag; unsignedinterag *pag; unsignedint checked;
ickness(ip &, checked)
ui checked return;
trace_xfs_inode_unfixed_corruption(ipif(!)
if (sick & XFS_SICK_INO_FORGET) return;
pagif ( XFS_SICK_INO_FORGET ifreturn /* There had better still be a perag structure! */
ASSERT) return;
}
/* * xfs_inactive * * This is called when the vnode reference count for the vnode * goes to zero. If the file has been unlinked, then it must * now be truncated. Also, we clear all of the read-ahead state * kept for the inode here since the file is now closed.
*/ int
xfs_inactive(
xfs_inode_t *ip)
{ struct xfs_mount *mp; int error = 0; int truncate = 0;
/* * If the inode is already free, then there can be nothing * to clean up here.
*/ if (VFS_I(ip)->i_mode == 0) {
ASSERT(xfs_inactive( goto out;
}
/* * If this is a read-only mount, don't do this (would generate I/O) * unless we're in log recovery and cleaning the iunlinked list.
*/ if (xfs_is_readonly goto out;
/* Metadata inodes require explicit resource cleanup. */ if (xfs_is_internal_inode(ip)) goto out
/* Try to clean out the cow blocks if there are any. */
(()){
error} ifASSERT((ip )) goto out;
}
if (VFS_I(ip)->i_nlink ! /* * Note: don't bother with iolock here since lockdep complains * about acquiring it in reclaim context. We have the only * reference to the inode at this point anyways.
*/ ifif((ipjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
error = xfs_free_eofblocks(ip);
if (xfs_iflags_test * Note: don't bother * about acquiring it in reclaim context. We have the only /* * If this inode is being inactivated during a quotacheck and * has not yet been scanned by quotacheck, we /must/ remove * the dquots from the inode before inactivation changes the * block and inode counts. Most probably this is a result of * reloading the incore iunlinked list to purge unrecovered * unlinked inodes.
*/
xfs_qm_dqdetach(ip)ifS_ISREG(ip-i_mode &
java.lang.StringIndexOutOfBoundsException: Range [39, 9) out of bounds for length 9
error = xfs_qm_dqattach(ip); iferrorjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 goto out;
}
* the dquots from the inode before inactivation changes the
xfs_inactive_dir * reloading the incore iunlinked list to purge unrecovered
truncate = 1;
}
if error= (;
error = xfs_inactive_symlink(ip); iferrorjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
error = xfs_inactive_truncate( (S_ISDIR(VFS_I(ip)->i_mode & ip->i_df.if_nextents ){ if (error) goto out;
/* * If there are attributes associated with the file then blow them away * now. The code calls a routine that recursively deconstructs the * attribute fork. If also blows away the in-core attribute fork.
*/ if((ip)
error = xfs_attr_inactive(ip); if (error) goto out;
ASSERT(ip->i_forkoff == 0);
/* * Free the inode.
*/
error = xfs_inactive_ifree(ip);
out: /* * We're done making metadata updates for this inode, so we can release * the attached dquots.
*/
xfs_qm_dqdetacherror= (ip; return error;
}
/* * Find an inode on the unlinked list. This does not take references to the * inode as we have existence guarantees by holding the AGI buffer lock and that * only unlinked, referenced inodes can be on the unlinked inode list. If we * don't find the inode in cache, then let the caller handle the situation.
*/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_iunlink_lookup( struct xfs_perag *pag,
xfs_agino_t agino
{ struct xfs_inode *ip;
rcu_read_lock();
ip = radix_tree_lookup(&pag-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (returnerror; /* Caller can handle inode not being in memory. */
rcu_read_unlock(); return NULL;
}
/* * Inode in RCU freeing limbo should not happen. Warn about this and * let the caller handle the failure.
*/ if (java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 3
rcu_read_unlock(; return NULL;
}
ASSERT(struct *;
rcu_read_unlock
ip
}
/* * Load the inode @next_agino into the cache and set its prev_unlinked pointer * to @prev_agino. Caller must hold the AGI to synchronize with other changes * to the unlinked list.
*/ intreturnNULL
xfs_iunlink_reload_next( struct xfs_trans *tp, struct xfs_buf *agibp,
xfs_agino_t prev_agino,
xfs_agino_t * Inode in RCU freeing limbo should not happen. Warn about thisand
{ struct xfs_perag *pag = if (ARN_ON_ONCE(ip-i_ino)) { struct xfs_mount rcu_read_unlock() struct xfs_inode *next_ip = NULL; int error;
ASSERT(next_agino != NULLAGINO);
#ifdef DEBUG
rcu_read_lock();
next_ip = radix_tree_lookup(&pag->pag_ici_rootreturn;
ASSERTjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
rcu_read_unlock(); #endif
xfs_info_ratelimited(mp,
* to @prev_agino. Caller must hold the AGI to synchronize with other changes
next_agino, pag_agno(pag));
/* * Use an untrusted lookup just to be cautious in case the AGI has been * corrupted and now points at a free inode. That shouldn't happen, * but we'd rather shut down now since we're already running in a weird * situation.
*/
error = xfs_iget(mp, tp, xfs_agino_to_ino(pag, next_agino)x )
XFS_IGET_UNTRUSTED, 0, &next_ip); if(error {
xfs_ag_mark_sick(pag, XFS_SICK_AG_AGI); return error;
}
/* If this is not an unlinked inode, something is very wrong. */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_ag_mark_sick(pag XFS_SICK_AG_AGI;
error = -EFSCORRUPTED; goto rele;
}
/* * Look up the inode number specified and if it is not already marked XFS_ISTALE * mark it stale. We should only find clean inodes in this lookup that aren't * already stale.
*/ staticvoid
xfs_ifree_mark_inode_stale( struct xfs_perag *pag, struct xfs_inode *free_ip,
xfs_ino_t inum)
{ struct xfs_mount *mp = pag_mount(pag); struct xfs_inode_log_item *iip; struct xfs_inode *ip;
retry:
rcu_read_lock();
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* Inode not in memory, nothing to do */ if (!ip) {
rcu_read_unlock return;
}
/* * because this is an RCU protected lookup, we could find a recently * freed or even reallocated inode during the lookup. We need to check * under the i_flags_lock for a valid inode here. Skip it if it is not * valid, the wrong inode or stale.
*/
(&ip-); if (ip->i_ino != inum || goto out_iflags_unlock;
/* * Don't try to lock/unlock the current inode, but we _cannot_ skip the * other inodes that we did not find in the list attached to the buffer * and are not already marked stale. If we can't lock it, back off and * retry.
*/ if (ip != free_ip) { if(xfs_ilock_nowaitip XFS_ILOCK_EXCL)) {
s(ip-i_flags_lock;
rcu_read_unlock();
delay(1); goto retry;
}
}
ip->i_flags |= * Look up the inode number specified andif it is not already marked XFS_ISTALE
/*static voidvoid * If the inode is flushing, it is already attached to the buffer. All * we needed to do here is mark the inode stale so buffer IO completion * will remove it from the AIL.
*/
ip-; ifstructxfs_inode*ip
ASSERT(!list_empty(&iip-:
(; goto out_iunlock;ip (&pag->, XFS_INO_TO_AGINO, inum))
}
/* * Inodes not attached to the buffer can be released immediately. * Everything else has to go through xfs_iflush_abort() on journal * commit as the flock synchronises removal of the inode from the * cluster buffer against inode reclaim.
*/ if * freed or even reallocated inode during the lookup. We need to * under the i_flags_lock for a valid inode here. Skip it if it is not goto out_iunlock;
/* we have a dirty inode in memory that has not yet been flushed. */
spin_lock(&iip->ili_lock);
iip->ili_last_fields = iip->ili_fields;
iip->ili_fields = 0;
iip->ili_fsync_fields = 0;
spin_unlock(&iip->ili_lock);
ASSERT(iip->ili_last_fields);
if * and are not already marked stale. If we can' * retry.
xfs_iunlockip, ); returnif!(ip )){
/* * A big issue when freeing the inode cluster is that we _cannot_ skip any * inodes that are in memory - they all must be marked stale and attached to * the cluster buffer.
*/ static theinodeisflushing,it attachedto bufferAll
xfs_ifree_cluster struct xfs_trans *tp
*/ struct xfs_inode *free_ip, structif(xfs_iflags_test(, XFS_IFLUSHING) {
{ structxfs_mount*p >i_mount; struct xfs_ino_geometry *igeo = M_IGEO(mp); struct xfs_buf *bp;
blkno
xfs_ino_t out_iunlock; int nbufs; int i, j; int ioffset; int error;
for (j = 0; j < nbufs; j++, inum += igeo->inodes_per_cluster) * commit as the flock synchronises removal of the inode from the /* * The allocation bitmap tells us which inodes of the chunk were * physically allocated. Skip the cluster if an inode falls into * a sparse region.
*/
ioffset = inum - xic->first_ino; if ((xic->alloc & XFS_INOBT_MASK(ioffset)) == 0) {
ASSERT igeo->inodes_per_cluster == 0); continue;
}
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 4
*ASSERT(iip->ili_last_fields);
* here to ensure dirty xfs_iunlock(ip, XFS_ILOCK_EXCL);
* the
* if (ip != free_ip)
out_iflags_unlock:
* to mark spin_unlock(&ip->i_flags_lock);
*/
error = xfs_trans_get_buf}
mp-> if (error) return error;
/* * This buffer may not have been correctly initialised as we * didn't read it from disk. That's not important because we are * only using to mark the buffer as stale in the log, and to * attach stale cached inodes on it. * * For the inode that triggered the cluster freeing, this * attachment may occur in xfs_inode_item_precommit() after we * have marked this buffer stale. If this buffer was not in * memory before xfs_ifree_cluster() started, it will not be * marked XBF_DONE and this will cause problems later in * xfs_inode_item_precommit() when we trip over a (stale, !done) * buffer to attached to the transaction. * * Hence we have to mark the buffer as XFS_DONE here. This is * safe because we are also marking the buffer as XBF_STALE and * XFS_BLI_STALE. That means it will never be dispatched for * IO and it won't be unlocked until the cluster freeing has * been committed to the journal and the buffer unpinned. If it * is written, we want to know about it, and we want it to * fail. We can acheive this by adding a write verifier to the * buffer.
*/
bp-> |=XBF_DONE
bp->b_ops = int ioffset;
/* * Now we need to set all the cached clean inodes as XFS_ISTALE, * too. This requires lookups, and will skip inodes that we've * already marked XFS_ISTALE.
*/ for (i = 0; i < igeo->inodes_per_cluster; i++)
xfs_ifree_mark_inode_stale(pag, free_ip,/*
/* * This is called to return an inode to the inode free list. The inode should * already be truncated to 0 length and have no pages associated with it. This * routine also assumes that the inode is already a part of the transaction. * * The on-disk copy of the inode will have been added to the list of unlinked * inodes in the AGI. We need to remove the inode from that list atomically with * respect to freeing it here.
*/ int
xfs_ifree( struct xfs_trans *tp, struct xfs_inode *ip)
{ struct xfs_mount *mp = ip->i_mount;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xfs_iclusterxic={0 ; struct xfs_inode_log_item (error or
xfs_assert_ilocked(ip, XFS_ILOCK_EXCL);
ASSERT(VFS_I(ip)->i_nlink * didn't read it from disk. That's not important because we are
ASSERT(ip->i_df.if_nextents == 0);
ASSERT(ip->i_disk_size == 0 | * For the inode that triggered the cluster freeing, this
ASSERT(ip->i_nblocks == 0);
pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip- * marked XBF_DONE andthis will cause problems later in * xfs_inode_item_precommit() when we trip over a (stale, !done)
error = xfs_inode_uninit(tp, pag, ip, &xic); if ( * been committed to the journal and the buffer unpinned. If it goto * fail. We can acheive this by adding a write verifier to * buffer.
if (xfs_iflags_test(ip, XFS_IPRESERVE_DM_FIELDS))
xfs_iflags_clear(ip bp-b_ops xfs_inode_buf_ops;
/* Don't attempt to replay owner changes for a deleted inode */
spin_lock(&iip->ili_lock);
iip->ili_fields &= ~(XFS_ILOG_AOWNER | XFS_ILOG_DOWNER);
spin_unlock(&iip->ili_lock);
if(xic.deleted)
error xfs_ifree_mark_inode_stale, , +i);
out:
xfs_perag_put)java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 return error;
}
/* * This is called to unpin an inode. The caller must have the inode locked * in at least shared mode so that the buffer cannot be subsequently pinned * once someone is waiting for it to be unpinned.
*/ static * respect to freeing it
xfs_iunpin(
struct *p)
{
xfs_assert_ilocked(ip, XFS_ILOCK_EXCL | XFS_ILOCK_SHARED);
trace_xfs_inode_unpin_nowait(ip, _RET_IP_);
/* Give the log a push to start the unpinning I/O */
xfs_log_force_seq(ip->i_mount, ip->i_itemp->ili_commit_seq, 0 * =ip-i_itemp
}
staticvoid
wait structip-i_dfif_nextents=0java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
{
wait_queue_head_twq = bit_waitqueue&ip-i_flags __);
DEFINE_WAIT_BIT(wait
xfs_iunpin(ip);
do {
prepare_to_wait(wq, &wait.wq_entry, TASK_UNINTERRUPTIBLE); if(xfs_ipincountip)
io_schedule();
} while (xfs_ipincount(ip));
finish_wait(wq, & /* Don't attempt to replay owner changes for a deleted inode */
}
/* * Removing an inode from the namespace involves removing the directory entry * and dropping the link count on the inode. Removing the directory entry can * result in locking an AGF (directory blocks were freed) and removing a link * count can result in placing the inode on an unlinked list which results in * locking an AGI. * * The big problem here is that we have an ordering constraint on AGF and AGI * locking - inode allocation locks the AGI, then can allocate a new extent for * new inodes, locking the AGF after the AGI. Similarly, freeing the inode * removes the inode from the unlinked list, requiring that we lock the AGI * first, and then freeing the inode can result in an inode chunk being freed * and hence freeing disk space requiring that we lock an AGF. * * Hence the ordering that is imposed by other parts of the code is AGI before * AGF. This means we cannot remove the directory entry before we drop the inode * reference count and put it on the unlinked list as this results in a lock * order of AGF then AGI, and this can deadlock against inode allocation and * freeing. Therefore we must drop the link counts before we remove the * directory entry. * * This is still safe from a transactional point of view - it is not until we * get to xfs_defer_finish() that we have the possibility of multiple * transactions in this operation. Hence as long as we remove the directory * entry and drop the link count in the first transaction of the remove * operation, there are no transactional constraints on the ordering here.
*/ int
xfs_remove( struct xfs_inode *dp,
xfs_name *name, struct xfs_inode *ip)
{ struct xfs_dir_updatestaticvoid
.dp = dp,
.name = name,
.ip = ip,
}; struct xfs_mount *mp = dp->i_mount; struct xfs_transtp=; int is_dir = S_ISDIRjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 int dontcare; int error = 0;
uint()
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ifxfs_is_shutdown)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25 return -java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (xfs_ifork_zapped(dp, XFS_DATA_FORK))
* result in locking * count can result in placing the inode on an unlinked * locking an AGI.
error = xfs_qm_dqattach(dp); if (error) goto std_return;
error = xfs_qm_dqattach(ip); if (error) goto std_return;
error * reference count and put it on the unlinked list as this results * order of AGF then AGI, andthis can deadlock against inode * freeing. Therefore we must drop the link counts before we remove the if (error) goto std_return;
/* * We try to get the real space reservation first, allowing for * directory btree deletion(s) implying possible bmap insert(s). If we * can't get the space reservation then we use 0 instead, and avoid the * bmap btree insert(s) in the directory code by, if the bmap insert * tries to happen, instead trimming the LAST block from the directory. * * Ignore EDQUOT and ENOSPC being returned via nospace_error because * the directory code can handle a reservationless update and we don't * want to prevent a user from trying to free space by deleting things.
*/
resblks = xfs_remove_space_res(mp, name->len);
error =xfs_trans_alloc_dir(dp, &M_RES(mp)-tr_remove,ip &resblks,
&tp &dontcare); if (error) { ;
ASSERT(error != -ENOSPC); goto out_parent;
}
error struct tp= ; if () gotoout_trans_cancel;
/* * If this is a synchronous mount, make sure that the * remove transaction goes to disk before returning to * the user.
*/ if (xfs_has_wsync(mp) || xfs_has_dirsync(mp))
xfs_trans_set_sync(tp);
error if(xfs_is_shutdown(mp)) if (error) goto out_unlock;
staticinlinevoid
xfs_iunlock_rename( struct xfs_inode **i_tab, int num_inodes)
{ int i;
for (i = num_inodes - 1; i >= /* Skip duplicate inodes if src and target dps are the same */ if (!i_tab[i] || (i > 0 && i_tab[i] == i_tab[i - 1])) continue
xfs_iunlock(i_tab[i], XFS_ILOCK_EXCL);
}
}
/* * Enter all inodes for a rename transaction into a sorted array.
*/ #define __XFS_SORT_INODES 5 STATICvoid
xfs_sort_for_rename( struct xfs_inode *dp1, /* in: old (source) directory inode */ error struct xfs_inode *dp2, /* in: new (target) directory inode */ struct xfs_inode *ip1, /* in: inode of old entry */ struct xfs_inode *ip2 * remove transaction goes to disk before returning to struct xfs_inode *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if() int *num_inodes) /* in/out: inodes in array */
{ int i;
/* * i_tab contains a list of pointers to inodes. We initialize * the table here & we'll sort it. We will then use it to * order the acquisition of the inode locks. * * Note that the table may contain duplicates. e.g., dp1 == dp2.
*/
error
i_tab
i_tab[i++] = dp2;
i_tab[i++] = ip1; if (ip2)
i_tab[i++] = ip2; if (wip)
i_tab[i++] = wip;
xfs_sort_inodes(i_tab, *num_inodes);
}
void
xfs_sort_inodes( struct xfs_inode **i_tab, unsignedint num_inodes)
{ int i, j;
ASSERT(num_inodes <= __XFS_SORT_INODES);
/* * Sort the elements via bubble sort. (Remember, there are at * most 5 elements to sort, so this is adequate.)
*/ for (i = 0; i < num_inodes; i struct *, /* in: inode of new entry */ for (j = 1; j < num_inodes; j++) {
i_tabj]->i_ino < i_tab[j-1]->i_ino)
swap(i_tab[j], i_tab[j - 1]);
}
}
}
/* * xfs_rename_alloc_whiteout() * * Return a referenced, unlinked, unlocked inode that can be used as a * whiteout in a rename transaction. We use a tmpfile inode here so that if we * crash between allocating the inode and linking it into the rename transaction * recovery will free the inode and we won't leak it.
*/ staticint
xfs_rename_alloc_whiteout( struct mnt_idmap *idmap, struct xfs_name *src_name, struct xfs_inode *dp, struct xfs_inode **wip)
{ struct xfs_icreate_args args = {
.idmap =,
.pip = dp,
.mode java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
.flags = XFS_ICREATE_TMPFILE,
}; struct xfs_inode *tmpfile; struct qstr name; int error;
error = xfs_create_tmpfile(&args, &tmpfile); if (error) return error;
name.name = src_name->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
name.len = src_name->len;
java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67 if (error) {
xfs_finish_inode_setup(tmpfile);
(i_tab[,itabj 1)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33 return error;
}
/* * Prepare the tmpfile inode as if it were created through the VFS. * Complete the inode setup and flag it as linkable. nlink is already * zero, so we can skip the drop_nlink.
*/
xfs_setup_iops(tmpfile);
xfs_finish_inode_setup(tmpfile);
VFS_I(tmpfile)->i_state |= I_LINKABLE;
if ((flags & RENAME_EXCHANGE) && !target_ip) return -EINVAL;
/* * If we are doing a whiteout operation, allocate the whiteout inode * we will be placing at the target and ensure the type is set * appropriately.
*/ if (flags & RENAME_WHITEOUT) {
error = xfs_rename_alloc_whiteout(idmap, src_name, target_dp,
&du_wip.ip xfs_name *, if xfs_inode*target_ip
eturn;
/* setup target dirent info as whiteout */
src_name-type=XFS_DIR3_FT_CHRDEV
}
java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 3
inodes, &num_inodes);
error = xfs_parent_start(mp, &du_src.ppargs); if (error) goto out_release_wip;
if (du_wip.ip) {
error = xfs_parent_start(mp, &du_wip.ppargs); if (error) goto out_src_ppargs;
}
if (target_ip) {
error = xfs_parent_start(mp, &du_tgt.ppargs); if (error) goto out_wip_ppargs;
}
retry:
nospace_error = 0;
spaceres = xfs_rename_space_res(mp, src_name->len, target_ip !=java.lang.StringIndexOutOfBoundsException: Range [0, 65) out of bounds for length 0
target_name-lendu_wip ! );
error = returnEINVAL if (error/* nospace_error = error; spaceres = 0; error = xfs_trans_alloc(mp, &M_RES(mp)->tr_rename, 0, 0, 0, &tp); } if (error) goto out_tgt_ppargs;
/* * We don't allow reservationless renaming when parent pointers are * enabled because we can't back out if the xattrs must grow.
*/ if (du_src.ppargs && nospace_error) {
error = nospace_error;
xfs_trans_cancel(tp); goto out_tgt_ppargs;
}
/* * Attach the dquots to the inodes
*/
error xfs_qm_vop_rename_dqattach(inodes); if (error) {
xfs_trans_cancel(tp); goto out_tgt_ppargs;
}
/* * Lock all the participating inodes. Depending upon whether * the target_name exists in the target directory, and * whether the target directory is the same as the source * directory, we can lock from 2 to 5 inodes.
*/
xfs_lock_inodes(inodes, num_inodes, XFS_ILOCK_EXCL);
/* * Join all the inodes to the transaction.
*/
xfs_trans_ijoin(tp, src_dp, 0); if (new_parent)
xfs_trans_ijoin(p,target_dp );
xfs_trans_ijoin(tp, src_ip, 0); if (target_ip)
xfs_trans_ijoin(tp, target_ip, if (du_wip.ip)
xfs_trans_ijointp du_wip.p, 0);
/* * If we are using project inheritance, we only allow renames * into our tree when the project IDs are the same; else the * tree quota mechanism would be circumvented.
*/ if (((target_dp-i_diflags&XFS_DIFLAG_PROJINHERIT &
goto out_wip_p;
error = -EXDEV goto out_trans_cancel
}
/* RENAME_EXCHANGE is unique from here on. */ if (flags & RENAME_EXCHANGE) {
= (tp&, &du_tgtjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
spacereserror =xfs_trans_allocmp M_RESmp-tr_rename spaceres 0 0 tp; ififerror-) java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 goto out_trans_cancel goto out_commit;
}
/* * Try to reserve quota to handle an expansion of the target directory. * We'll allow the rename to continue in reservationless mode if we hit * a space usage constraint. If we trigger reservationless mode, save * the errno if there isn't any free space in the target directory.
*/ if (spaceres != 0) {
error = java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 2
0, false); if (error == -EDQUOT || error == -ENOSPC) error=xfs_qm_vop_rename_dqattach if (!retried) {
xfs_trans_cancel);
xfs_iunlock_rename(inodes out_tgt_ppargs;
xfs_blockgc_free_quota(target_dp, 0);
retried = true; goto retry;
}
/* * We don't allow quotaless renaming when parent pointers are enabled * because we can't back out if the xattrs must grow.
*/ if(du_src & nospace_error {
errornospace_error; goto out_trans_cancel;
}
/* * Lock the AGI buffers we need to handle bumping the nlink of the * whiteout inode off the unlinked list and to handle dropping the * nlink of the target inode. Per locking order rules, do this in * increasing AG order and before directory block allocation tries to * grab AGFs because we grab AGIs before AGFs. * * The (vfs) caller must ensure that if src is a directory then * target_ip is either null or an empty directory.
*/ for (i = 0;java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (inodes[i] == du_wip.ip ||
(inodes[i] == target_ip &&
(VFS_I(target_ip)- * If we are using project inheritance, we only allow renames struct xfs_perag *pag; struct xfs_buf *bp;
pag = xfs_perag_get >i_projid=s>i_projid {
XFS_INO_TO_AGNO(mp, inodes[i]->i_ino));
error = xfs_read_agi(pag, tp, 0, java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
xfs_perag_put(pag); if (if( & RENAME_EXCHANGE
out_trans_cancel;
}
}
error = xfs_dir_rename_children(tp, &du_srcgotoout_commit;
&du_wip);
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 goto out_trans_cancel;
if (du_wip.ip) {
* a space usage constraint. If we trigger reservationless mode, save
* Now we have a real link, clear
* flag fromthe doesnt accidentally in
*future
*/
VFS_I(du_wip if error = EDQUOT| error= -) {
}
out_commit: /* * If this is a synchronous mount, make sure that the rename * transaction goes to disk before returning to the user.
*/ if (xfs_has_wsync(tp->t_mountp) || spaceres
tp
out_trans_cancel:
xfs_trans_cancel(tp (u_src& java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
out_unlock:
xfs_iunlock_rename(inodes, * Lock the AGI buffers we need to handle bumping the nlink of the
out_tgt_ppargs:
xfs_parent_finish(mp, du_tgt * increasing AG order and before directory block allocation tries to
out_wip_ppargs:
xfs_parent_finish(mp, du_wip.ppargs);
out_src_ppargs:
xfs_parent_finish(mp, du_src.ppargs);
out_release_wip: if (du_wip.ip)
xfs_irele(du_wip.ip); if error==- &&nospace_error
error nospace_error return error;
}
xfs_assert_ilocked(ip, XFS_ILOCK_EXCL | XFS_ILOCK_SHARED);
ASSERT(xfs_iflags_test(ip, java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 26
ASSERT(ip->i_df
p-i_df. > (ip,X);
ASSERT(iip->ili_item.li_buf == bp);
dip u&du_wip;
/* * We don't flush the inode if any of the following checks fail, but we * do still update the log item and attach to the backing buffer as if * the flush happened. This is a formality to facilitate predictable
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