Robert Watson 71909edec8 Significant refactoring of the accounting code to improve locking and VFS ... happiness, as well as correct other bugs: - Replace notion of current and saved accounting credential/vnode with a single credential/vnode and an acct_suspended flag. This simplifies the accounting logic substantially. - Replace acct_mtx with acct_sx, a sleepable lock held exclusively during reconfiguration and space polling, but shared during log entry generation. This avoids holding a mutex over sleepable VFS operations. - Hold the sx lock over the duration of the I/O so that the vnode I/O cannot occur after vnode close, which could occur previously if accounting was disabled as a process exited. - Write the accounting log entry with Giant conditionally acquired based on the file system where the log is stored. Previously, the accounting code relied on the caller acquiring Giant. - Acquire Giant conditionally in the accounting callout based on the file system where the accounting log is stored. Run the callout MPSAFE. - Expose acct_suspended via a read-only sysctl so it is possibly to programmatically determine whether accounting is suspended or not without attempting to parse logs. - Check both acct_vp and acct_suspended lock-free before entering the accounting sx lock in acct(). - When accounting is disabled due to a VBAD vnode (i.e., forceable unmount), generate a log message indicating accounting has been disabled. - Correct a long-standing bug in how free space is calculated and compared to the required space: generate and compare signed results, not unsigned results, or negative free space will cause accounting to not be suspended when required, or worse, incorrectly resumed once negative free space is reached. MFC after: 2 weeks		2005-11-12 10:45:13 +00:00
..
bus_if.m
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh
imgact_aout.c	- Neither of our image formats require Giant now that the vm and vfs have	2005-05-03 10:51:38 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c	Back out alpha/alpha/trap.c:1.124, osf1_ioctl.c:1.14, osf1_misc.c:1.57,	2005-09-28 07:03:03 +00:00
imgact_gzip.c	- Change the vm_mmap() function to accept an objtype_t parameter specifying	2005-04-01 20:00:11 +00:00
imgact_shell.c	Fix a panic which could occur parsing #!-lines in a shell-script. If the	2005-06-19 02:21:03 +00:00
inflate.c	Normalize a significant number of kernel malloc type names:	2005-10-31 15:41:29 +00:00
init_main.c	Remove mac_create_root_mount() and mpo_create_root_mount(), which	2005-09-19 13:59:57 +00:00
init_sysent.c	Regen.	2005-10-30 02:14:37 +00:00
kern_acct.c	Significant refactoring of the accounting code to improve locking and VFS	2005-11-12 10:45:13 +00:00
kern_acl.c	Implement new world order in VFS locking for ACLs. This will remove the	2005-09-17 22:01:14 +00:00
kern_alq.c	Modify the alq(9) alq_open() API to accept a file creation mode, rather	2005-04-16 12:12:27 +00:00
kern_clock.c	In watchdog_config enable the software watchdog iff the WD_ACTIVE flag is	2005-10-27 17:22:47 +00:00
kern_condvar.c
kern_conf.c	Move the initialization of the devmtx into the mutex_init() function	2005-10-18 18:27:44 +00:00
kern_context.c
kern_cpu.c	make saved cpu level stackable.	2005-10-03 06:57:29 +00:00
kern_descrip.c	Add the f_msgcount field to the set of struct file fields printed in show	2005-11-10 13:26:29 +00:00
kern_environment.c	Reorder statements to avoid accessing unknown memory.	2005-09-26 14:14:55 +00:00
kern_event.c	Add in kqueue support to LIO event notification and fix how it handled	2005-10-12 17:51:31 +00:00
kern_exec.c	Cleanup some signal interfaces. Now the tdsignal function accepts	2005-11-03 04:49:16 +00:00
kern_exit.c	Giant clean up for exit(2)	2005-11-08 17:11:03 +00:00
kern_fork.c	Fix the recent panics/LORs/hangs created by my kqueue commit by:	2005-07-01 16:28:32 +00:00
kern_idle.c	Divorce critical sections from spinlocks. Critical sections as denoted by	2005-04-04 21:53:56 +00:00
kern_intr.c	Add a swi_remove() function to teardown software interrupt handlers. For	2005-10-26 15:51:05 +00:00
kern_jail.c	Push Giant down in jails. Pass the MPSAFE flag to NDINIT, and keep track	2005-09-28 00:30:56 +00:00
kern_kse.c	Cleanup some signal interfaces. Now the tdsignal function accepts	2005-11-03 04:49:16 +00:00
kern_kthread.c
kern_ktr.c	- Add curthread to the state that ktr is saving. The extra information is	2005-06-10 23:21:29 +00:00
kern_ktrace.c	Reuse ktr_unused field in ktr_header structure as ktr_tid; populate	2005-11-01 14:46:37 +00:00
kern_linker.c	Fix a bug in the kernel module runtime linker that made it impossible	2005-10-19 20:40:30 +00:00
kern_lock.c	Include kdb.h so that kdb_active is declared regardless of KDB being	2005-10-02 10:03:51 +00:00
kern_lockf.c	Print name of device instead of useless major/minor numbers.	2005-03-29 08:13:01 +00:00
kern_mac.c	Standard Giant push down operations for the Mandatory Access Control (MAC)	2005-10-04 14:32:58 +00:00
kern_malloc.c	Detect memory leaks when memory type is being destroyed.	2005-11-03 13:48:59 +00:00
kern_mbuf.c	Fix panic string in last revision.	2005-11-06 16:47:59 +00:00
kern_mib.c	mp_ncpus is always (properly) initialized, even on UP kernels, so just use it.	2005-08-21 18:03:31 +00:00
kern_module.c
kern_mtxpool.c
kern_mutex.c	Move the initialization of the devmtx into the mutex_init() function	2005-10-18 18:27:44 +00:00
kern_ntptime.c	Explicitly acquire Giant around the ntp_gettime() and assert it in the	2005-05-28 14:34:41 +00:00
kern_physio.c
kern_pmc.c	Fail the module loading process if the currently executing kernel	2005-07-30 09:02:42 +00:00
kern_poll.c	- Don't pollute opt_global.h with DEVICE_POLLING and introduce	2005-10-05 10:09:17 +00:00
kern_proc.c	Add support for queueing SIGCHLD same as other UNIX systems did.	2005-11-08 09:09:26 +00:00
kern_prot.c	Use the refcount API to manage the reference count for user credentials	2005-09-27 18:09:42 +00:00
kern_resource.c	Calling setrlimit from 32bit apps could potentially increase certain	2005-11-02 21:18:07 +00:00
kern_sema.c
kern_shutdown.c	Don't pretend to be thread0 when calling sync().	2005-09-22 15:34:15 +00:00
kern_sig.c	Make sure only remove one signal by debugger.	2005-11-12 04:22:16 +00:00
kern_subr.c
kern_switch.c	In adjustrunqueue(), add code to handle thread migrating case for	2005-08-03 01:23:45 +00:00
kern_sx.c
kern_synch.c	Use low level constructs borrowed from interrupt threads to wait for	2005-05-23 23:01:53 +00:00
kern_syscalls.c
kern_sysctl.c	Drop in a WITNESS_WARN into SYSCTL_IN to make sure that we are	2005-08-08 21:06:42 +00:00
kern_tc.c	Start time_uptime with 1 instead of 0.	2005-09-19 22:16:31 +00:00
kern_thr.c	Cleanup some signal interfaces. Now the tdsignal function accepts	2005-11-03 04:49:16 +00:00
kern_thread.c	Add support for queueing SIGCHLD same as other UNIX systems did.	2005-11-08 09:09:26 +00:00
kern_time.c	Fix name compatible problem with POSIX standard. the sigval_ptr and	2005-11-04 09:41:00 +00:00
kern_timeout.c	Oops, missed adding the required include.	2005-09-15 20:20:36 +00:00
kern_umtx.c	do umtx_wake at userland thread exit address, so that others userland	2005-10-26 06:55:46 +00:00
kern_uuid.c	Add parse_uuid() that creates a binary representation of an UUID from	2005-10-07 13:37:10 +00:00
kern_xxx.c
ksched.c
link_elf_obj.c	Handle vm_map_wire()'s failure.	2005-08-28 05:38:40 +00:00
link_elf.c	Check to see if the hash table is present in link_elf_lookup_symbol()	2005-10-31 19:17:32 +00:00
linker_if.m
Make.tags.inc
Makefile	Add a 'sysent' target that depends on the various files built from	2005-07-13 20:50:17 +00:00
makesyscalls.sh	Introduce a new field in the syscalls.master file format to hold the	2005-05-30 15:09:18 +00:00
md4c.c
md5c.c
p1003_1b.c	Actually commit the code for kern_sched_get_rr_interval().	2005-03-31 22:54:48 +00:00
posix4_mib.c
sched_4bsd.c	Move HWPMC_HOOKS into its own opt_hwpmc_hooks.h file. It doesn't merit	2005-06-24 00:16:57 +00:00
sched_ule.c	Temporarily disable nice threshold detection code, as it can starve	2005-09-22 01:19:37 +00:00
subr_acl_posix1e.c	Implement new world order in VFS locking for ACLs. This will remove the	2005-09-17 22:01:14 +00:00
subr_autoconf.c
subr_blist.c
subr_bus.c	When data passed into devctl_notify is NULL, don't print (null). Instead	2005-10-04 22:25:14 +00:00
subr_clist.c
subr_clock.c
subr_devstat.c	- Remove two mtx_asserts that can incorrectly trigger if	2005-05-03 10:58:05 +00:00
subr_disk.c	- Fix insertions of bios which represent data earlier than anything else	2005-06-15 23:32:07 +00:00
subr_eventhandler.c
subr_hints.c	The resource_xxx routines in subr_hints.c are called before and after the	2005-07-31 10:46:55 +00:00
subr_kdb.c	Add stoppcbs[] arrays on Alpha and sparc64 and have each CPU save its	2005-11-03 21:08:20 +00:00
subr_kobj.c	Export a routine, kobj_machdep_init(), that allows platforms	2005-08-07 02:20:35 +00:00
subr_log.c
subr_mbpool.c
subr_mchain.c	Change API of mb_copy_t in libmchain so that netsmb can handle	2005-07-29 13:22:37 +00:00
subr_module.c
subr_msgbuf.c
subr_param.c	Partially revert revision 1.66, which contained a change that did not	2005-10-14 19:15:10 +00:00
subr_pcpu.c	Fix 'show allpcpu' ddb command on non-x86. CPU IDs are in the range 0 ..	2005-11-03 21:06:29 +00:00
subr_power.c	General consensus is that it would be even better to run this in a	2005-11-09 16:22:56 +00:00
subr_prf.c	Acquire Giant in uprintf() and tprintf() rather than asserting it. In	2005-09-26 08:02:24 +00:00
subr_prof.c
subr_rman.c	Eliminate __RMAN_RESOURCE_VISIBLE hack entirely by moving the struct	2005-10-06 21:49:31 +00:00
subr_rtc.c
subr_sbuf.c
subr_scanf.c
subr_sleepqueue.c	Clarify panic message, I parsed the old one 'trying to sleep while sleeping'	2005-11-09 07:28:52 +00:00
subr_smp.c	Rename the KDB_STOP_NMI kernel option to STOP_NMI and make it apply to all	2005-10-24 21:04:19 +00:00
subr_stack.c	Add 'depth' argument to CTRSTACK() macro, which allows to reduce number	2005-08-29 11:34:08 +00:00
subr_taskqueue.c	Use shorter names for the Giant and fast taskqueues so that their names	2005-10-25 19:29:02 +00:00
subr_trap.c	1. Change prototype of trapsignal and sendsig to use ksiginfo_t *, most	2005-10-14 12:43:47 +00:00
subr_turnstile.c	Trim a couple of unneeded includes.	2005-09-29 19:13:52 +00:00
subr_unit.c
subr_witness.c	Reorganize the interrupt handling code a bit to make a few things cleaner	2005-10-25 19:48:48 +00:00
sys_generic.c	- Add two new system calls: preadv() and pwritev() which are like readv()	2005-07-07 18:17:55 +00:00
sys_pipe.c	Fix the recent panics/LORs/hangs created by my kqueue commit by:	2005-07-01 16:28:32 +00:00
sys_process.c	Make sure pending SIGCHLD is removed from previous parent when process	2005-11-08 23:28:12 +00:00
sys_socket.c	Introduce three additional MAC Framework and MAC Policy entry points to	2005-04-16 18:46:29 +00:00
syscalls.c	Regen.	2005-10-30 02:14:37 +00:00
syscalls.master	Fix sigevent's POSIX incompatible problem by adding member fields	2005-10-30 02:12:49 +00:00
sysv_ipc.c
sysv_msg.c
sysv_sem.c	Gratuitous renaming of four System V Semaphore MAC Framework entry	2005-06-07 05:03:28 +00:00
sysv_shm.c	Re-order MAC and DAC checks in shmget() in order to give precedence to	2005-10-04 16:40:20 +00:00
tty_compat.c	Make ttsetcompat() static	2005-10-16 20:40:40 +00:00
tty_conf.c
tty_cons.c
tty_pty.c	Merge the dev_clone and dev_clone_cred event handlers into a single	2005-08-08 19:55:32 +00:00
tty_subr.c
tty_tty.c	Merge the dev_clone and dev_clone_cred event handlers into a single	2005-08-08 19:55:32 +00:00
tty.c	Revert most of revision 1.235 and fix the problem a different way. We	2005-10-27 16:47:28 +00:00
uipc_accf.c	o setsockopt(2) cannot remove accept filter. [1]	2005-06-11 11:59:48 +00:00
uipc_cow.c	Previously, nothing prevented the page that was returned by pmap_extract()	2005-10-23 07:41:56 +00:00
uipc_domain.c
uipc_mbuf2.c	Define four constants, MBUF_{,MEM,CLUSTER,PACKET,TAG}_MEM_NAME, which	2005-07-17 14:04:03 +00:00
uipc_mbuf.c	Free only those mbuf+clusters back to the packet zone that were allocated	2005-11-05 19:43:55 +00:00
uipc_proto.c	Use sparse initializers for "struct domain" and "struct protosw",	2005-11-09 13:29:16 +00:00
uipc_sem.c	Const-qualify ksem_timedwait's parameter abstime as it's only passed in.	2005-10-18 11:46:24 +00:00
uipc_sockbuf.c	Retire MT_HEADER mbuf type and change its users to use MT_DATA.	2005-11-02 13:46:32 +00:00
uipc_socket2.c	Retire MT_HEADER mbuf type and change its users to use MT_DATA.	2005-11-02 13:46:32 +00:00
uipc_socket.c	Retire MT_HEADER mbuf type and change its users to use MT_DATA.	2005-11-02 13:46:32 +00:00
uipc_syscalls.c	Reformat socket control messages on input/output for 32bit compatibility	2005-10-31 21:09:56 +00:00
uipc_usrreq.c	Correct a number of serious and closely related bugs in the UNIX domain	2005-11-10 16:06:04 +00:00
vfs_acl.c	Implement new world order in VFS locking for ACLs. This will remove the	2005-09-17 22:01:14 +00:00
vfs_aio.c	In aio_waitcomplete, do not return EAGAIN if no other threads	2005-11-08 23:48:32 +00:00
vfs_bio.c	Normalize a significant number of kernel malloc type names:	2005-10-31 15:41:29 +00:00
vfs_cache.c	- Fix a leaked reference to a vnode via v_dd. We rely on cache_purge() and	2005-06-17 01:05:13 +00:00
vfs_cluster.c	Normalize a significant number of kernel malloc type names:	2005-10-31 15:41:29 +00:00
vfs_default.c	In vop_stdpathconf(ap) also default for _PC_NAME_MAX and _PC_PATH_MAX.	2005-08-17 06:59:23 +00:00
vfs_export.c	Normalize a significant number of kernel malloc type names:	2005-10-31 15:41:29 +00:00
vfs_extattr.c	Implement new world order in VFS locking for extended attributes. This will	2005-09-24 23:47:04 +00:00
vfs_hash.c	Normalize a significant number of kernel malloc type names:	2005-10-31 15:41:29 +00:00
vfs_init.c
vfs_lookup.c	Use correct VFS locking rather than unconditionally grabbing Giant around	2005-09-21 19:49:42 +00:00
vfs_mount.c	For nmount(), allow a text string error message to be propagated back	2005-11-09 02:26:38 +00:00
vfs_subr.c	This is a workaround for a complicated issue involving VFS cookies and devfs.	2005-11-09 22:03:50 +00:00
vfs_syscalls.c	Implement new world order in VFS locking for extended attributes. This will	2005-09-24 23:47:04 +00:00
vfs_vnops.c	- Replace the series of DEBUG_LOCKS hacks which tried to save the vn_lock	2005-08-03 04:48:22 +00:00
vnode_if.src	Allow EVFILT_VNODE events to work on every filesystem type, not just	2005-06-09 20:20:31 +00:00