Kirk McKusick e268f54cb4 Background: ... When renaming a directory it passes through several intermediate states. First its new name will be created causing it to have two names (from possibly different parents). Next, if it has different parents, its value of ".." will be changed from pointing to the old parent to pointing to the new parent. Concurrently, its old name will be removed bringing it back into a consistent state. When fsck encounters an extra name for a directory, it offers to remove the "extraneous hard link"; when it finds that the names have been changed but the update to ".." has not happened, it offers to rewrite ".." to point at the correct parent. Both of these changes were considered unexpected so would cause fsck in preen mode or fsck in background mode to fail with the need to run fsck manually to fix these problems. Fsck running in preen mode or background mode now corrects these expected inconsistencies that arise during directory rename. The functionality added with this update is used by fsck running in background mode to make these fixes. Solution: This update adds three new fsck sysctl commands to support background fsck in correcting expected inconsistencies that arise from incomplete directory rename operations. They are: setcwd(dirinode) - set the current directory to dirinode in the filesystem associated with the snapshot. setdotdot(oldvalue, newvalue) - Verify that the inode number for ".." in the current directory is oldvalue then change it to newvalue. unlink(nameptr, oldvalue) - Verify that the inode number associated with nameptr in the current directory is oldvalue then unlink it. As with all other fsck sysctls, these new ones may only be used by processes with appropriate priviledge. Reported by: jeff Security issues: rwatson		2010-01-11 20:44:05 +00:00
..
bus_if.m	Add a facility for associating optional descriptions with active interrupt	2009-10-15 14:54:35 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh
imgact_aout.c
imgact_elf32.c
imgact_elf64.c
imgact_elf.c	If ET_DYN binary has non-zero base address for some reason, honour it	2009-10-18 12:57:48 +00:00
imgact_gzip.c
imgact_shell.c
inflate.c
init_main.c	Random number generator initialization cleanup:	2009-10-20 16:36:51 +00:00
init_sysent.c	Regenerate	2009-10-27 11:01:15 +00:00
kern_acct.c
kern_alq.c
kern_clock.c	Introduce the new kernel thread called "deadlock resolver".	2010-01-09 01:46:38 +00:00
kern_condvar.c
kern_conf.c	Update d_mmap() to accept vm_ooffset_t and vm_memattr_t.	2009-12-29 21:51:28 +00:00
kern_cons.c	Allow multiple console devices per driver without insane code duplication.	2009-08-24 10:53:30 +00:00
kern_context.c	In r197963, a race with thread being selected for signal delivery	2009-10-27 10:47:58 +00:00
kern_cpu.c	Free allocated sbufs before returning ENOMEM.	2010-01-08 22:58:50 +00:00
kern_cpuset.c	Another nit that both I and ispell missed.	2009-10-26 18:32:06 +00:00
kern_ctf.c
kern_descrip.c	On the return path from F_RDAHEAD and F_READAHEAD fcntls, do not	2009-11-20 22:22:53 +00:00
kern_dtrace.c
kern_environment.c	Merge change r198561 from projects/mips to head:	2010-01-10 22:34:18 +00:00
kern_event.c	If a filter has already been added, actually return EEXIST when trying	2009-12-31 20:56:28 +00:00
kern_exec.c	- Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and	2009-10-23 15:14:54 +00:00
kern_exit.c	Let access overriding to TTYs depend on the cdev_priv, not the vnode.	2009-12-19 18:42:12 +00:00
kern_fail.c	Remove extraneous semicolons, no functional changes.	2010-01-07 21:01:37 +00:00
kern_fork.c	Reintroduce the r196640, after fixing the problem with my testing.	2009-09-01 11:41:51 +00:00
kern_idle.c	Split P_NOLOAD into a per-thread flag (TDF_NOLOAD).	2009-11-03 16:46:52 +00:00
kern_intr.c	Split P_NOLOAD into a per-thread flag (TDF_NOLOAD).	2009-11-03 16:46:52 +00:00
kern_jail.c	(S)LIST_HEAD_INITIALIZER takes a (S)LIST_HEAD as an argument.	2009-12-28 22:56:30 +00:00
kern_kthread.c	Reintroduce the r196640, after fixing the problem with my testing.	2009-09-01 11:41:51 +00:00
kern_ktr.c
kern_ktrace.c	- Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and	2009-10-23 15:14:54 +00:00
kern_linker.c	- Unbreak build with KLD_DEBUG defined	2009-11-17 21:56:12 +00:00
kern_lock.c	Fix typos.	2010-01-07 01:24:09 +00:00
kern_lockf.c	In lf_iteratelocks_vnode, increment state->ls_threads around iterating	2009-06-25 18:54:56 +00:00
kern_lockstat.c
kern_malloc.c
kern_mbuf.c	Add support to the virtual memory system for configuring machine-	2009-07-12 23:31:20 +00:00
kern_mib.c	Correct the explination text for the kern.ngroups. It reflects the	2010-01-09 23:22:31 +00:00
kern_module.c
kern_mtxpool.c
kern_mutex.c	Revert previous commit and add myself to the list of people who should	2009-09-08 13:19:05 +00:00
kern_ntptime.c
kern_osd.c
kern_physio.c
kern_pmc.c
kern_poll.c	Rather than fix questionable ifnet list locking in the implementation of	2009-08-15 23:07:43 +00:00
kern_priv.c
kern_proc.c	Remove an unused global.	2009-12-25 20:03:03 +00:00
kern_prot.c	Remove the interim vimage containers, struct vimage and struct procg,	2009-07-17 14:48:21 +00:00
kern_resource.c	Implement global and per-uid accounting of the anonymous memory. Add	2009-06-23 20:45:22 +00:00
kern_rmlock.c	Remove extra spaces (no functional change).	2009-12-25 21:14:05 +00:00
kern_rwlock.c	When releasing a read/shared lock we need to use a write memory barrier	2009-09-30 13:26:31 +00:00
kern_sdt.c
kern_sema.c
kern_shutdown.c	Don't bother copying the name of a kproc or kthread out into a temporary	2009-10-23 15:09:51 +00:00
kern_sig.c	Remove wrong assertion. Debugee is allowed to lose a signal.	2009-12-03 20:16:59 +00:00
kern_subr.c	Constify prime numbers.	2009-08-23 09:55:06 +00:00
kern_switch.c	- Use DPCPU for SCHED_STATS. This is somewhat awkward because the	2009-06-25 01:33:51 +00:00
kern_sx.c	In current code, threads performing an interruptible sleep (on both	2009-12-12 21:31:07 +00:00
kern_synch.c	Add new msleep(9) flag PBDY that shall be specified together with	2009-07-14 22:52:46 +00:00
kern_syscalls.c
kern_sysctl.c	Make it possible to change the vnet sysctl variables on jails	2009-08-13 10:26:34 +00:00
kern_tc.c
kern_thr.c	Currently, when signal is delivered to the process and there is a thread	2009-10-11 16:49:30 +00:00
kern_thread.c	Inform hwpmc(4) of a thread's impending demise prior to invoking sched_throw().	2009-10-25 04:34:47 +00:00
kern_time.c
kern_timeout.c	Properly fix callout handling by putting all the per-cpu info in	2009-12-14 12:23:46 +00:00
kern_umtx.c	Make a chain be a list of queues, and make threads waiting	2010-01-10 09:31:57 +00:00
kern_uuid.c	Rework global locks for interface list and index management, correcting	2009-08-23 20:40:19 +00:00
kern_xxx.c
ksched.c
link_elf_obj.c	Add macros VNET_SETNAME and VNET_SYMPREFIX, and expose to userspace if	2009-07-20 07:50:50 +00:00
link_elf.c	Build on Jeff Roberson's linker-set based dynamic per-CPU allocator	2009-07-14 22:48:30 +00:00
linker_if.m
Make.tags.inc
Makefile
makesyscalls.sh	Add a new COMPAT7 flag for FreeBSD 7.x compatibility system calls.	2009-06-24 13:36:37 +00:00
md4c.c
md5c.c
p1003_1b.c
posix4_mib.c
sched_4bsd.c	- Fix a bug in sched_4bsd where the timestamp for the sleeping operation	2010-01-08 14:55:11 +00:00
sched_ule.c	Allow swap out of the kernel stack for the thread with priority greater	2009-12-31 18:52:58 +00:00
serdev_if.m
stack_protector.c	Random number generator initialization cleanup:	2009-10-20 16:36:51 +00:00
subr_acl_nfs4.c	Fix comments.	2010-01-04 12:39:42 +00:00
subr_acl_posix1e.c	Now that all the callers seem to be fixed, add KASSERTs to make sure VAPPEND	2009-12-26 11:36:10 +00:00
subr_autoconf.c
subr_blist.c
subr_bufring.c
subr_bus.c	Actually set RLE_ALLOCATED when allocating a reserved resource so that	2009-12-30 22:37:28 +00:00
subr_clock.c
subr_devstat.c	Update d_mmap() to accept vm_ooffset_t and vm_memattr_t.	2009-12-29 21:51:28 +00:00
subr_disk.c
subr_eventhandler.c	If the runcount is non-zero in eventhandler_deregister() then one or more	2009-12-17 21:17:13 +00:00
subr_fattime.c
subr_firmware.c	Remove extraneous semicolons, no functional changes.	2010-01-07 21:01:37 +00:00
subr_hints.c
subr_kdb.c	* Completely Remove the option STOP_NMI from the kernel. This option	2009-08-13 17:09:45 +00:00
subr_kobj.c
subr_lock.c
subr_log.c	Make /dev/klog and kern.msgbuf* MPSAFE.	2009-11-03 21:06:19 +00:00
subr_mbpool.c
subr_mchain.c
subr_module.c
subr_msgbuf.c
subr_param.c	Increase HZ_VM from 10 to 100. While 10 hz saves cpu time	2009-07-08 01:09:12 +00:00
subr_pcpu.c	Add ddb show dpcpu_off command to ease dpcpu memory debugging.	2009-08-12 12:06:16 +00:00
subr_power.c
subr_prf.c	Make /dev/klog and kern.msgbuf* MPSAFE.	2009-11-03 21:06:19 +00:00
subr_prof.c
subr_rman.c
subr_rtc.c
subr_sbuf.c
subr_scanf.c
subr_sglist.c	This patch fixes two bugs in sglist(9) and improves robustness of the API via	2009-08-21 02:59:07 +00:00
subr_sleepqueue.c	Introduce the new kernel thread called "deadlock resolver".	2010-01-09 01:46:38 +00:00
subr_smp.c	Remove forward_roundrobin(), it is unused for quite some time.	2009-09-21 13:09:56 +00:00
subr_stack.c	Add stack_print_short() and stack_print_short_ddb() interfaces to	2009-06-24 12:06:15 +00:00
subr_taskqueue.c	- Fix several off-by-one errors when using MAXCOMLEN. The p_comm[] and	2009-10-23 15:14:54 +00:00
subr_trap.c	Current pselect(3) is implemented in usermode and thus vulnerable to	2009-10-27 10:55:34 +00:00
subr_turnstile.c	Introduce the new kernel thread called "deadlock resolver".	2010-01-09 01:46:38 +00:00
subr_unit.c
subr_witness.c	SLIP is gone; remove its mutex from witness.	2009-12-29 08:45:27 +00:00
sys_generic.c	Current pselect(3) is implemented in usermode and thus vulnerable to	2009-10-27 10:55:34 +00:00
sys_pipe.c	Use C99 initialization for struct filterops.	2009-09-12 20:03:45 +00:00
sys_process.c	Replace VM_PROT_OVERRIDE_WRITE by VM_PROT_COPY. VM_PROT_OVERRIDE_WRITE has	2009-11-26 05:16:07 +00:00
sys_socket.c	Merge the remainder of kern_vimage.c and vimage.h into vnet.c and	2009-08-01 19:26:27 +00:00
syscalls.c	Regenerate	2009-10-27 11:01:15 +00:00
syscalls.master	Current pselect(3) is implemented in usermode and thus vulnerable to	2009-10-27 10:55:34 +00:00
systrace_args.c	Regenerate	2009-10-27 11:01:15 +00:00
sysv_ipc.c	Change the ABI of some of the structures used by the SYSV IPC API:	2009-06-24 21:10:52 +00:00
sysv_msg.c	Change the ABI of some of the structures used by the SYSV IPC API:	2009-06-24 21:10:52 +00:00
sysv_sem.c	Change the ABI of some of the structures used by the SYSV IPC API:	2009-06-24 21:10:52 +00:00
sysv_shm.c	- Rename tunable kern.ipc.shmmaxpgs to kern.ipc.shmall.	2009-10-24 19:00:58 +00:00
tty_compat.c	Make TIOCSTI work again.	2010-01-04 20:59:52 +00:00
tty_info.c
tty_inq.c
tty_outq.c
tty_pts.c	Make TIOCSTI work again.	2010-01-04 20:59:52 +00:00
tty_tty.c
tty_ttydisc.c	Print backspaces after echoing an EOF.	2009-10-17 08:59:41 +00:00
tty.c	Make TIOCSTI work again.	2010-01-04 20:59:52 +00:00
uipc_accf.c	(S)LIST_HEAD_INITIALIZER takes a (S)LIST_HEAD as an argument.	2009-12-28 22:56:30 +00:00
uipc_cow.c
uipc_debug.c
uipc_domain.c	When registering a protocol to an existing protocol domain via	2009-08-24 10:03:41 +00:00
uipc_mbuf2.c
uipc_mbuf.c	Add m_mbuftouio() helper function to copy(out) an arbitrary	2009-06-22 22:20:38 +00:00
uipc_mqueue.c	Use C99 initialization for struct filterops.	2009-09-12 20:03:45 +00:00
uipc_sem.c	Use umtx to implement process sharable semaphore, to make this work,	2010-01-05 02:37:59 +00:00
uipc_shm.c	Implement global and per-uid accounting of the anonymous memory. Add	2009-06-23 20:45:22 +00:00
uipc_sockbuf.c	In sbappendstream_locked() demote all incoming packet mbufs (and	2009-06-22 21:46:40 +00:00
uipc_socket.c	Don't comment on stream socket handling in sosend_dgram, since that's	2009-10-02 21:31:15 +00:00
uipc_syscalls.c	Fix argument order in a call to mtx_init.	2009-12-17 00:22:56 +00:00
uipc_usrreq.c	Fix build on amd64, where sysctl arg1 is a pointer.	2009-10-05 22:23:12 +00:00
vfs_acl.c	Add change that was somehow missed in r192586. It could manifest by	2009-12-03 13:29:24 +00:00
vfs_aio.c	Use C99 initialization for struct filterops.	2009-09-12 20:03:45 +00:00
vfs_bio.c	When buffer write is failed, it is wrong for brelse() to invalidate	2009-07-19 20:25:59 +00:00
vfs_cache.c	Correctly handle unlock for !MAKEENTRY case, after successfull attempt of	2009-08-14 10:57:28 +00:00
vfs_cluster.c	Remove a stale comment. The very same revision (r85511) that introduced	2009-06-30 19:39:17 +00:00
vfs_default.c	Revert r198873. Having different VAPPEND semantics for VOP_ACCESS(9)	2009-11-11 13:49:22 +00:00
vfs_export.c	Set the prison in NFS anon and GSS SVC creds.	2009-09-28 18:07:16 +00:00
vfs_extattr.c	Replace AUDIT_ARG() with variable argument macros with a set more more	2009-06-27 13:58:44 +00:00
vfs_hash.c
vfs_init.c
vfs_lookup.c	When rename("a", "b/.") is performed, target namei() call returns	2009-11-10 11:50:37 +00:00
vfs_mount.c	(S)LIST_HEAD_INITIALIZER takes a (S)LIST_HEAD as an argument.	2009-12-28 22:56:30 +00:00
vfs_subr.c	Add a knob to allow reclaim of the directory vnodes that are source of	2009-12-28 15:35:39 +00:00
vfs_syscalls.c	Background:	2010-01-11 20:44:05 +00:00
vfs_vnops.c	Don't add VAPPEND if the file is not being opened for writing. Note that this	2009-12-08 20:47:10 +00:00
vnode_if.src