Konstantin Belousov 140dedb81c The r241025 fixed the case when a binary, executed from nullfs mount, ... was still possible to open for write from the lower filesystem. There is a symmetric situation where the binary could already has file descriptors opened for write, but it can be executed from the nullfs overlay. Handle the issue by passing one v_writecount reference to the lower vnode if nullfs vnode has non-zero v_writecount. Note that only one write reference can be donated, since nullfs only keeps one use reference on the lower vnode. Always use the lower vnode v_writecount for the checks. Introduce the VOP_GET_WRITECOUNT to read v_writecount, which is currently always bypassed to the lower vnode, and VOP_ADD_WRITECOUNT to manipulate the v_writecount value, which manages a single bypass reference to the lower vnode. Caling the VOPs instead of directly accessing v_writecount provide the fix described in the previous paragraph. Tested by: pho MFC after: 3 weeks		2012-11-02 13:56:36 +00:00
..
bus_if.m	Add a BUS_CHILD_DELETED() method that a bus can hook to allow it to cleanup	2012-08-21 18:13:09 +00:00
capabilities.conf	Add missing system calls.	2012-05-31 19:32:37 +00:00
clock_if.m
cpufreq_if.m
device_if.m	Revert r239178 and implement two new functions, namely	2012-08-15 15:42:57 +00:00
dtio_kdtrace.c	Change the module name for the I/O provider to "kernel" from	2012-09-25 19:16:28 +00:00
genassym.sh
imgact_aout.c	Cosmetics: define FREEBSD32_MINUSER and AOUT32_MINUSER for struct	2012-07-22 13:41:45 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
imgact_gzip.c	Remove an old hack I noticed years ago, but never committed.	2012-06-28 07:33:43 +00:00
imgact_shell.c
inflate.c
init_main.c	Fix grammar.	2012-08-16 13:01:56 +00:00
init_sysent.c	regen.	2012-08-17 02:47:16 +00:00
kern_acct.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_alq.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_clock.c	Implement the DTrace sched provider. This implementation aims to be	2012-05-15 01:30:25 +00:00
kern_clocksource.c	panic() with reasonable message instead of returning zero frequency causing	2012-10-10 19:46:46 +00:00
kern_condvar.c	Remove all the checks on curthread != NULL with the exception of some MD	2012-09-13 22:26:22 +00:00
kern_conf.c	Remove unused SI_* flags.	2012-08-28 19:30:29 +00:00
kern_cons.c	cngetc: use cpu_spinwait to ease the cncheckc loop a tiny bit	2012-10-06 19:50:23 +00:00
kern_context.c
kern_cpu.c	Revert r175376 and tune cpufreq(4) frequency comparison logic instead.	2012-03-10 18:56:16 +00:00
kern_cpuset.c	Post r222812 KTR_CPUMASK started being initialized only as a tunable	2012-08-30 21:22:47 +00:00
kern_ctf.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_descrip.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_dtrace.c
kern_environment.c	Reserve room for the terminating NUL when setting or getting kernel	2012-08-14 19:16:30 +00:00
kern_et.c
kern_event.c	Make the interval timings for EVFILT_TIMER more accurate. tvtohz() always	2012-07-13 13:24:33 +00:00
kern_exec.c	The r241025 fixed the case when a binary, executed from nullfs mount,	2012-11-02 13:56:36 +00:00
kern_exit.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_fail.c
kern_ffclock.c	Revise the sysctl handling code and restructure the hierarchy of sysctls	2011-12-01 07:19:13 +00:00
kern_fork.c	userret() already checks for td_locks when INVARIANTS is enabled, so	2012-09-08 18:27:11 +00:00
kern_gzio.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_hhook.c
kern_idle.c
kern_intr.c	Add optional entropy harvesting for software interrupts in swi_sched()	2012-09-25 14:55:46 +00:00
kern_jail.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_khelp.c
kern_kthread.c	Stop treating td_sigmask specially for the purposes of new thread	2012-05-26 20:03:47 +00:00
kern_ktr.c	Post r222812 KTR_CPUMASK started being initialized only as a tunable	2012-08-30 21:22:47 +00:00
kern_ktrace.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_linker.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_lock.c	Improve check coverage about idle threads.	2012-09-12 22:10:53 +00:00
kern_lockf.c
kern_lockstat.c
kern_loginclass.c
kern_malloc.c	Fix a bug with memguard(9) on 32-bit architectures without a	2012-07-15 20:29:48 +00:00
kern_mbuf.c	Since the macro dtom() has been removed, fix comments about the dtom.	2012-10-29 10:04:28 +00:00
kern_mib.c	As a safety measure, disable lowering pid_max too much.	2012-08-16 13:04:21 +00:00
kern_module.c	Fix a typo.	2012-08-22 20:01:57 +00:00
kern_mtxpool.c
kern_mutex.c	Give mtx(9) the ability to crunch different type of structures, with the	2012-10-31 13:38:56 +00:00
kern_ntptime.c	Limit popcorn limit to something sane (either 2ns or 2 ticks if that's	2012-08-16 02:35:44 +00:00
kern_osd.c
kern_physio.c
kern_pmc.c	Add software PMC support.	2012-03-28 20:58:30 +00:00
kern_poll.c
kern_priv.c
kern_proc.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_prot.c	Fix a typo. (s/nessesary/necessary/)	2012-01-08 18:48:36 +00:00
kern_racct.c	Add CPU percentage limit enforcement to RCTL. The resouce name is "pcpu".	2012-10-26 16:01:08 +00:00
kern_rangelock.c	Add a rangelock implementation, intended to be used to range-locking	2012-05-30 16:06:38 +00:00
kern_rctl.c	Add CPU percentage limit enforcement to RCTL. The resouce name is "pcpu".	2012-10-26 16:01:08 +00:00
kern_resource.c	Change kern.proc.rlimit sysctl to:	2012-01-22 20:25:00 +00:00
kern_rmlock.c	Add an unified macro to deny ability from the compiler to reorder	2012-10-09 14:32:30 +00:00
kern_rwlock.c	Remove all the checks on curthread != NULL with the exception of some MD	2012-09-13 22:26:22 +00:00
kern_sdt.c	Instead of only iterating over the set of known SDT probes when sdt.ko is	2012-03-27 15:07:43 +00:00
kern_sema.c
kern_sharedpage.c	Move the code dealing with shared page into a dedicated	2012-06-23 10:15:23 +00:00
kern_shutdown.c	Provide a device name in the sysctl tree for programs to query the	2012-11-01 17:01:05 +00:00
kern_sig.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
kern_switch.c	critical_exit: ignore td_owepreempt if kdb_active is set	2011-12-04 21:27:41 +00:00
kern_sx.c	Remove all the checks on curthread != NULL with the exception of some MD	2012-09-13 22:26:22 +00:00
kern_synch.c	Implement the DTrace sched provider. This implementation aims to be	2012-05-15 01:30:25 +00:00
kern_syscalls.c
kern_sysctl.c	Handle spurious page faults that may occur in no-fault sections of the	2012-03-22 04:52:51 +00:00
kern_tc.c	Add support for walltimestamp in DTrace.	2012-07-16 20:17:19 +00:00
kern_thr.c	Stop treating td_sigmask specially for the purposes of new thread	2012-05-26 20:03:47 +00:00
kern_thread.c	Make the updates of the tid ring buffer' head and tail pointers	2012-09-26 09:25:11 +00:00
kern_time.c	Implement syscall clock_getcpuclockid2, so we can get a clock id	2012-08-17 02:26:31 +00:00
kern_timeout.c	Rework the known mutexes to benefit about staying on their own	2012-10-31 18:07:18 +00:00
kern_umtx.c	The fields of struct timespec32 should be int32_t and not uint32_t.	2012-10-27 23:42:41 +00:00
kern_uuid.c	Convert all users of IF_ADDR_LOCK to use new locking macros that specify	2012-01-05 19:00:36 +00:00
kern_xxx.c
ksched.c	sched_rr_interval() seems always returned period in hz ticks, but same	2012-08-10 18:19:57 +00:00
link_elf_obj.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
link_elf.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
linker_if.m
Make.tags.inc	Disconnect non-MPSAFE SMBFS from the build in preparation for dropping	2012-10-18 12:04:56 +00:00
Makefile
makesyscalls.sh	- Add the ffclock_getcounter(), ffclock_getestimate() and ffclock_setestimate()	2011-11-21 01:26:10 +00:00
md4c.c
md5c.c
p1003_1b.c
posix4_mib.c
sched_4bsd.c	Add CPU percentage limit enforcement to RCTL. The resouce name is "pcpu".	2012-10-26 16:01:08 +00:00
sched_ule.c	Rework the known mutexes to benefit about staying on their own	2012-10-31 18:07:18 +00:00
serdev_if.m
stack_protector.c
subr_acl_nfs4.c	Fix bug where NFSv4 ACL enforcement code wouldn't unconditionally	2012-04-17 14:54:00 +00:00
subr_acl_posix1e.c	Add module load/unload stubs.	2012-03-13 20:27:48 +00:00
subr_autoconf.c
subr_blist.c	- Fix typos s/(more|less) then|\1 than/	2011-12-03 15:41:37 +00:00
subr_bufring.c
subr_bus.c	Provide a generic way to disable devices at boot time	2012-10-02 03:33:41 +00:00
subr_clock.c
subr_devstat.c	Fix build for kernels with dtrace hooks.	2012-07-11 18:50:50 +00:00
subr_disk.c
subr_dummy_vdso_tc.c	Implement mechanism to export some kernel timekeeping data to	2012-06-22 07:06:40 +00:00
subr_eventhandler.c
subr_fattime.c
subr_firmware.c	Correct sizeof usage	2012-06-25 05:41:16 +00:00
subr_hash.c	Convert panic()s to KASSERT()s. This is an optimisation for	2012-01-23 16:31:46 +00:00
subr_hints.c	Style fixes.	2012-09-04 23:16:55 +00:00
subr_kdb.c	- Extend the KDB interface to add a per-debugger callback to print a	2012-04-12 17:43:59 +00:00
subr_kobj.c
subr_lock.c	panic: add a switch and infrastructure for stopping other CPUs in SMP case	2011-12-11 21:02:01 +00:00
subr_log.c	Add kqueue support to /dev/klog.	2012-02-01 14:34:52 +00:00
subr_mbpool.c
subr_mchain.c	- Use uint8_t for the variable x and spell the size of the variable	2012-02-06 06:03:16 +00:00
subr_module.c
subr_msgbuf.c	- Clean up timestamps in msgbuf code. The timestamps should now be	2012-03-19 00:36:32 +00:00
subr_param.c	Allow autotune maxusers > 384 on 64 bit machines	2012-10-25 01:46:20 +00:00
subr_pcpu.c
subr_power.c
subr_prf.c
subr_prof.c
subr_rman.c	Unlock in the error path to prevent a lock leak.	2012-05-31 17:27:05 +00:00
subr_rtc.c
subr_sbuf.c
subr_scanf.c	Xen netback driver rewrite.	2012-01-26 16:35:09 +00:00
subr_sglist.c
subr_sleepqueue.c	Tweak the commit message in case of panic for sleeping from threads	2012-09-12 22:05:54 +00:00
subr_smp.c	Another fixe for r236772.	2012-06-11 18:47:26 +00:00
subr_stack.c
subr_syscall.c	Move the checks for td_pinned, td_critnest, TDP_NOFAULTING and	2012-09-08 18:35:15 +00:00
subr_taskqueue.c	Shorten the name of the fast SWI taskqueue to "fast taskq" so that	2012-08-28 13:35:37 +00:00
subr_trap.c	Fixup r240246: hwpmc needs to retain the pinning until ASTs are not	2012-10-30 15:10:50 +00:00
subr_turnstile.c	Improve check coverage about idle threads.	2012-09-12 22:10:53 +00:00
subr_uio.c	Replace the ill-named ZERO_COPY_SOCKET kernel option with two	2012-10-23 14:19:44 +00:00
subr_unit.c	Correct double "the the"	2012-09-14 21:28:56 +00:00
subr_witness.c	- Unlike cache invalidation and TLB demapping IPIs, reading registers from	2012-08-29 16:56:50 +00:00
sys_capability.c	Style: move opt_*.h includes in the proper place.	2012-06-10 20:22:10 +00:00
sys_generic.c	Disconnect non-MPSAFE SMBFS from the build in preparation for dropping	2012-10-18 12:04:56 +00:00
sys_pipe.c	I am comparing current pipe code with the one in 8.3-STABLE r236165,	2012-07-31 05:48:35 +00:00
sys_procdesc.c	Fix panic in procdesc that can be triggered in the following scenario:	2012-09-01 11:21:56 +00:00
sys_process.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
sys_socket.c
syscalls.c	regen.	2012-08-17 02:47:16 +00:00
syscalls.master	Implement syscall clock_getcpuclockid2, so we can get a clock id	2012-08-17 02:26:31 +00:00
systrace_args.c	Implement syscall clock_getcpuclockid2, so we can get a clock id	2012-08-17 02:26:31 +00:00
sysv_ipc.c
sysv_msg.c
sysv_sem.c
sysv_shm.c	Close a race due to dropping of the map lock between creating a map entry	2012-02-19 00:28:49 +00:00
tty_compat.c
tty_info.c	Fix whitespace inconsistencies in TTY code.	2012-02-06 18:15:46 +00:00
tty_inq.c	Use strchr() and strrchr().	2012-01-02 12:12:10 +00:00
tty_outq.c
tty_pts.c
tty_tty.c
tty_ttydisc.c	Correct SIGTTIN handling.	2012-10-25 09:05:21 +00:00
tty.c	Correct SIGTTIN handling.	2012-10-25 09:05:21 +00:00
uipc_accf.c
uipc_cow.c
uipc_debug.c
uipc_domain.c	Move UMA socket zone initialization from uipc_domain.c to uipc_socket.c	2012-10-19 10:15:32 +00:00
uipc_mbuf2.c
uipc_mbuf.c	Since the macro dtom() has been removed, fix comments about the dtom.	2012-10-29 10:04:28 +00:00
uipc_mqueue.c	Fix freebsd32_kmq_timedreceive() and freebsd32_kmq_timedsend() to use	2012-09-25 22:15:59 +00:00
uipc_sem.c
uipc_shm.c	Export some more useful info about shared memory objects to userland	2012-04-01 18:22:48 +00:00
uipc_sockbuf.c	Document a large number of currently undocumented sysctls. While here	2011-12-13 00:38:50 +00:00
uipc_socket.c	In soreceive_stream() don't drop an already dequeued mbuf chain by	2012-10-29 12:31:12 +00:00
uipc_syscalls.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
uipc_usrreq.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_acl.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_aio.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_bio.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_cache.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_cluster.c	Correct a KASSERT message.	2012-08-15 22:12:01 +00:00
vfs_default.c	The r241025 fixed the case when a binary, executed from nullfs mount,	2012-11-02 13:56:36 +00:00
vfs_export.c
vfs_extattr.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_hash.c
vfs_init.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_lookup.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_mount.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_mountroot.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_subr.c	Remove the support for using non-mpsafe filesystem modules.	2012-10-22 17:50:54 +00:00
vfs_syscalls.c	Remove unused `vfslocked' variable.	2012-10-22 21:14:26 +00:00
vfs_vnops.c	The r241025 fixed the case when a binary, executed from nullfs mount,	2012-11-02 13:56:36 +00:00
vnode_if.src	The r241025 fixed the case when a binary, executed from nullfs mount,	2012-11-02 13:56:36 +00:00