Konstantin Belousov 0555fb3523 Somewhat modernize the SysV shm code: ...

- Use real locking, replace Giant with global sx protecting the
  subsystem.  Since the subsystem' lock is no longer dropped during
  the sleepsk, remove not needed SHMSEG_WANTED segment flag, and
  revert r278963.
- To do proper code simplification possible after the change of the
  lock, restructure several functions into _locked body and
  originally-named wrapper which calls into _locked variant.  This
  allows to eliminate the 'goto done2' spread over the code.
- Merge shm_find_segment_by_shmid() and shm_find_segment_by_shmidx().
- Consistently change all function prototypes to ANSI C.

Reviewed by:	mjg (who has earlier version of the similar patch to
	 introduce real locking)
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks

2015-03-21 15:01:19 +00:00

..

bus_if.m

Add a bus method to fetch the VM domain for the given device/bus.

2014-10-09 05:33:25 +00:00

capabilities.conf

Add futimens and utimensat system calls.

2015-01-23 21:07:08 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

Change the default method for device_quiesce() to return 0 instead of

2015-01-08 21:46:28 +00:00

genassym.sh

…

imgact_aout.c

…

imgact_binmisc.c

Allow multiple image activators to run on the same execution by changing

2014-09-04 21:31:25 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Reimplement support for userland core dump compression using a new interface

2015-03-09 03:50:53 +00:00

imgact_gzip.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

imgact_shell.c

Allow multiple image activators to run on the same execution by changing

2014-09-04 21:31:25 +00:00

inflate.c

…

init_main.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

init_sysent.c

Run make sysent.

2015-01-23 21:08:24 +00:00

kern_acct.c

acct: create a special plimit object and set it for exiting processes

2013-06-30 19:08:06 +00:00

kern_alq.c

Prevent alq from panic when the invalid alq_file path specified.

2014-04-05 16:54:47 +00:00

kern_clock.c

Initialize ticks so that it wraps 10 minutes after boot to increase the

2015-02-05 01:43:21 +00:00

kern_clocksource.c

Add ddb command 'show clocksource' to display state of the per-cpu

2015-02-04 14:49:47 +00:00

kern_condvar.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_conf.c

Stop enforcing additional reference on all cdevs, which was introduced

2015-01-19 17:36:52 +00:00

kern_cons.c

Include the nulterm byte in the sysctl string.

2015-03-15 00:36:08 +00:00

kern_context.c

…

kern_cpu.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_cpuset.c

Reject attempts to read the cpuset mask of a negative domain ID.

2015-01-08 19:11:14 +00:00

kern_ctf.c

Don't specify a resid parameter if we're just going to ignore it. Instead,

2015-02-20 20:49:00 +00:00

kern_descrip.c

Set the SBUF_INCLUDENUL flag in sbuf_new_for_sysctl() so that sysctl

2015-03-14 17:08:28 +00:00

kern_dtrace.c

Commit the rest of the changes that were intended to be part of r266826.

2014-05-29 01:42:22 +00:00

kern_dump.c

Factor out duplicated code from dumpsys() on each architecture into generic

2015-01-07 01:01:39 +00:00

kern_environment.c

Test if 'env' is NULL before doing memset() and strlen(),

2014-10-23 18:23:50 +00:00

kern_et.c

Trivial change / forced-commit to document prior change that slipped in

2015-03-16 19:29:19 +00:00

kern_event.c

prevent doing filter ops locking for staticly compiled filter ops...

2014-11-16 01:18:41 +00:00

kern_exec.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

kern_exit.c

proc: get rid of proc lock + unlock pair in proc_reap

2015-03-16 01:09:49 +00:00

kern_fail.c

Use a regular sbuf + SYSCTL_OUT() rather than sbuf_new_for_sysctl() with

2015-03-16 19:18:45 +00:00

kern_ffclock.c

The SYSCTL data pointers can come from userspace and must not be

2014-10-28 12:00:39 +00:00

kern_fork.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

kern_gzio.c

Reimplement support for userland core dump compression using a new interface

2015-03-09 03:50:53 +00:00

kern_hhook.c

Move hhook's per-vnet initialisation to an earlier SYSINIT SI_SUB stage to

2013-06-15 10:08:34 +00:00

kern_idle.c

…

kern_intr.c

This is the much-discussed major upgrade to the random(4) device, known to you all as /dev/random.

2014-10-30 21:21:53 +00:00

kern_jail.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

kern_khelp.c

Cleanup and simplification in khelp_{register|deregister}_helper(). No

2013-06-15 06:45:17 +00:00

kern_kthread.c

The umtx_lock mutex is used by top-half of the kernel, but is

2015-02-28 04:19:02 +00:00

kern_ktr.c

Drop KTR records when we're in the debugger so that the debugger isn't

2014-07-02 22:13:07 +00:00

kern_ktrace.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_linker.c

Const poison in a few places to ensure we don't modify things

2014-12-03 22:14:13 +00:00

kern_lock.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_lockf.c

Improve style and fix a possible use-after-free case introduced in r268384

2015-01-10 06:48:35 +00:00

kern_lockstat.c

- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging

2013-11-25 07:38:45 +00:00

kern_loginclass.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

kern_malloc.c

Set the SBUF_INCLUDENUL flag in sbuf_new_for_sysctl() so that sysctl

2015-03-14 17:08:28 +00:00

kern_mbuf.c

Test for absence of M_NOFREE before attempting to purge the mbuf's tags.

2014-09-30 23:16:26 +00:00

kern_mib.c

Allow the kern.osrelease and kern.osreldate sysctl values to be set in a

2015-02-27 16:28:55 +00:00

kern_module.c

…

kern_mtxpool.c

Garbage collect mtxpool_lockbuilder, the mutex pool historically used

2014-05-02 07:57:40 +00:00

kern_mutex.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_ntptime.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_osd.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_physio.c

Fix some issues in change 254760 pointed out by Bruce Evans:

2013-08-29 16:41:40 +00:00

kern_pmc.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_poll.c

- Remove empty wrappers ether_poll_[de]register_drv(). [1]

2014-09-28 14:05:18 +00:00

kern_priv.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_proc.c

Set the SBUF_INCLUDENUL flag in sbuf_new_for_sysctl() so that sysctl

2015-03-14 17:08:28 +00:00

kern_procctl.c

Reparenting done by debugger attach can leave reaper without direct

2015-02-15 08:44:30 +00:00

kern_prot.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

kern_racct.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

kern_rangelock.c

Change the queue of locks in kern_rangelock.c from holding lock requests in

2013-08-15 20:19:17 +00:00

kern_rctl.c

…

kern_resource.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

kern_rmlock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_rwlock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_sdt.c

Print a backtrace if the SDT(9) stub gets called so that there's at least

2014-02-22 01:41:45 +00:00

kern_sema.c

…

kern_sharedpage.c

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

kern_shutdown.c

Factor out duplicated code from dumpsys() on each architecture into generic

2015-01-07 01:01:39 +00:00

kern_sig.c

coredump: protect corefilename access with a lock

2015-03-21 04:39:33 +00:00

kern_switch.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_sx.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_synch.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_syscalls.c

Fix up module unload for syscall_module_handler consumers.

2014-11-01 22:36:40 +00:00

kern_sysctl.c

In sbuf_new_for_sysctl(), default the buffer size to 64 bytes if the

2015-03-17 20:56:24 +00:00

kern_tc.c

Use sbuf_printf() for sysctl strings instead of stack buffers and snprintf().

2015-03-14 23:16:12 +00:00

kern_thr.c

The umtx_lock mutex is used by top-half of the kernel, but is

2015-02-28 04:19:02 +00:00

kern_thread.c

The umtx_lock mutex is used by top-half of the kernel, but is

2015-02-28 04:19:02 +00:00

kern_time.c

Fix an off by one in ppsratecheck(). If you asked for N=1 you'd get one,

2015-01-11 20:48:29 +00:00

kern_timeout.c

This fixes a bug I in-advertantly inserted when I updated the callout

2015-02-12 13:31:08 +00:00

kern_umtx.c

The umtx_lock mutex is used by top-half of the kernel, but is

2015-02-28 04:19:02 +00:00

kern_uuid.c

Fix a bug in be_uuid_dec(); it called le16dec() instead of be16dec(),

2014-02-13 22:24:36 +00:00

kern_xxx.c

…

ksched.c

…

link_elf_obj.c

Fully support constructors for the purpose of code coverage analysis.

2014-10-20 17:04:03 +00:00

link_elf.c

Make 32-bit PowerPC kernels, like 64-bit PowerPC kernels, position-independent

2015-03-07 20:14:46 +00:00

linker_if.m

…

Make.tags.inc

Remove AppleTalk support.

2014-03-14 06:29:43 +00:00

Makefile

…

makesyscalls.sh

Fix syscalls that can be loaded as kernel modules - they were not given

2013-12-15 23:19:42 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

…

posix4_mib.c

…

sched_4bsd.c

Restore pre-r239157 handling of sched_yield(), when thread time slice was

2014-08-23 17:31:56 +00:00

sched_ule.c

Use sbuf_new_for_sysctl() instead of plain sbuf_new() to ensure sysctl

2015-03-14 18:42:30 +00:00

serdev_if.m

…

stack_protector.c

…

subr_acl_nfs4.c

…

subr_acl_posix1e.c

…

subr_autoconf.c

…

subr_blist.c

Remove reference to the rlist code from comments, and fix a typo visible

2013-02-05 20:08:33 +00:00

subr_bufring.c

…

subr_bus_dma.c

Add bus_dmamap_load_ma() function to load map with the array of

2013-10-27 21:39:16 +00:00

subr_bus.c

Use SYSCTL_OUT_STR() to return strings.

2015-03-14 21:40:01 +00:00

subr_busdma_bufalloc.c

Replace kernel virtual address space allocation with vmem. This provides

2013-08-07 06:21:20 +00:00

subr_capability.c

Remove duplicated includes.

2014-06-26 13:57:44 +00:00

subr_clock.c

For architectures where time_t is wide enough, in particular, 64bit

2014-12-12 09:37:18 +00:00

subr_counter.c

Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized.

2014-02-10 19:59:46 +00:00

subr_devstat.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

subr_disk.c

…

subr_dnvlist.c

Move libnv into the kernel and hook it into the kernel build

2015-03-01 00:34:27 +00:00

subr_dummy_vdso_tc.c

Update the vdso timehands only via tc_windup().

2015-01-20 03:54:30 +00:00

subr_eventhandler.c

…

subr_fattime.c

Where appropriate, use the modern terms for the one true time base

2014-12-21 05:07:11 +00:00

subr_firmware.c

…

subr_hash.c

…

subr_hints.c

Add a new device control utility for new-bus devices called devctl. This

2015-02-06 16:09:01 +00:00

subr_kdb.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

subr_kobj.c

…

subr_lock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

subr_log.c

MFcalloutng (r244255 by mav, with minor changes):

2013-03-04 16:07:55 +00:00

subr_mbpool.c

All mbuf external free functions never fail, so let them be void.

2014-07-11 13:58:48 +00:00

subr_mchain.c

…

subr_module.c

Turns out, this isn't only called from i386...

2014-12-30 02:39:47 +00:00

subr_msgbuf.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

subr_nvlist.c

Move libnv into the kernel and hook it into the kernel build

2015-03-01 00:34:27 +00:00

subr_nvpair.c

Move libnv into the kernel and hook it into the kernel build

2015-03-01 00:34:27 +00:00

subr_param.c

Use SYSCTL_OUT_STR() to return strings.

2015-03-14 21:40:01 +00:00

subr_pcpu.c

Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized.

2014-02-10 19:59:46 +00:00

subr_pctrie.c

- Add a new general purpose path-compressed radix trie which can be used

2013-05-12 04:05:01 +00:00

subr_power.c

…

subr_prf.c

Add a nulterm byte to the returned sysctl string.

2015-03-15 00:39:18 +00:00

subr_prof.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

subr_rman.c

Nuke the never-used RF_TIMESHARE feature, reducing the complexity of the

2014-07-16 22:18:19 +00:00

subr_rtc.c

…

subr_sbuf.c

The minimum sbuf buffer size is 2 bytes (a byte plus a nulterm), assert that.

2015-03-17 21:00:31 +00:00

subr_scanf.c

…

subr_sfbuf.c

Move KASSERT into locked region.

2014-08-11 15:06:07 +00:00

subr_sglist.c

Fix a couple of panics when detaching from a cxgbe/cxl interface that was

2015-01-26 16:26:28 +00:00

subr_sleepqueue.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

subr_smp.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

subr_stack.c

…

subr_syscall.c

Thread waiting for the vfork(2)-ed child to exec or exit, must allow

2014-12-08 16:18:05 +00:00

subr_taskqueue.c

Remove taskqueue_start_threads_pinned(); there's noa generic cpuset version of this.

2015-02-25 21:59:03 +00:00

subr_terminal.c

vt(4): Adjust the cursor position after changing the window size

2014-11-01 17:05:15 +00:00

subr_trap.c

Revert r263475: TDP_DEVMEMIO no longer needed, since amd64 /dev/kmem

2015-01-12 08:58:07 +00:00

subr_turnstile.c

dtrace sdt: remove the ugly sname parameter of SDT_PROBE_DEFINE

2013-11-26 08:46:27 +00:00

subr_uio.c

Add type qualifier volatile to the base (userspace) address argument

2014-10-31 17:43:21 +00:00

subr_unit.c

Move the definition of the struct unrhdr into a separate header file,

2013-08-30 07:37:45 +00:00

subr_vmem.c

Do not set M_BESTFIT if a strategy has already been provided. This

2014-04-16 21:39:43 +00:00

subr_witness.c

The umtx_lock mutex is used by top-half of the kernel, but is

2015-02-28 04:19:02 +00:00

sys_capability.c

cred: add proc_set_cred helper

2015-03-16 00:10:03 +00:00

sys_generic.c

filedesc: simplify fget_unlocked & friends

2015-02-17 23:54:06 +00:00

sys_pipe.c

Fix use after free in pipe_dtor(). PIPE_NAMED flag must be tested

2015-02-03 10:29:40 +00:00

sys_procdesc.c

Add a new fo_fill_kinfo fileops method to add type-specific information to

2014-09-22 16:20:47 +00:00

sys_process.c

Add a facility for non-init process to declare itself the reaper of

2014-12-15 12:01:42 +00:00

sys_socket.c

In preparation of merging projects/sendfile, transform bare access to

2014-11-12 09:57:15 +00:00

syscalls.c

Run make sysent.

2015-01-23 21:08:24 +00:00

syscalls.master

Add futimens and utimensat system calls.

2015-01-23 21:07:08 +00:00

systrace_args.c

Run make sysent.

2015-01-23 21:08:24 +00:00

sysv_ipc.c

…

sysv_msg.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

sysv_sem.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

sysv_shm.c

Somewhat modernize the SysV shm code:

2015-03-21 15:01:19 +00:00

tty_compat.c

…

tty_info.c

…

tty_inq.c

…

tty_outq.c

…

tty_pts.c

Implement FIODTYPE for master ptys.

2014-10-15 12:38:26 +00:00

tty_tty.c

…

tty_ttydisc.c

…

tty.c

filedesc: simplify fget_unlocked & friends

2015-02-17 23:54:06 +00:00

uipc_accf.c

The accept filter code is not specific to the FreeBSD IPv4 network stack,

2014-07-26 19:27:34 +00:00

uipc_debug.c

Merge from projects/sendfile:

2014-11-30 12:52:33 +00:00

uipc_domain.c

Merge from projects/sendfile: extend protocols API to support

2014-11-30 13:24:21 +00:00

uipc_mbuf2.c

Remove a 'This is dumb' comment that has been incorrect for at least a

2015-01-09 12:08:51 +00:00

uipc_mbuf.c

Use anonymous unions and structs to organize shared space in mbuf(9),

2015-02-17 20:52:51 +00:00

uipc_mbufhash.c

Reduce header pollution.

2015-03-17 14:16:50 +00:00

uipc_mqueue.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

uipc_sem.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

uipc_shm.c

Preset the object's color, or alignment, to maximize superpage usage.

2015-02-08 21:00:51 +00:00

uipc_sockbuf.c

In sbappend*() family of functions clear M_PROTO flags of incoming

2014-12-22 15:39:24 +00:00

uipc_socket.c

soreceive_generic() still has similar KASSERT(), therefore instead of

2015-02-23 15:24:43 +00:00

uipc_syscalls.c

Correct the use of an unitialized variable in sendfind_getobj()

2015-02-28 21:49:59 +00:00

uipc_usrreq.c

The VOP_LOOKUP() implementations for CREATE op do not put the name

2014-12-18 10:01:12 +00:00

vfs_acl.c

Replace some calls to fuword() by fueword() with proper error checking.

2014-10-28 15:28:20 +00:00

vfs_aio.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

vfs_bio.c

Reset bp->bio_done to unmapped_buf when removing a transient map in biodone.

2015-03-16 20:00:09 +00:00

vfs_cache.c

Indeed, instead of hiding the kern___getcwd() bug by bogus cast

2015-01-04 10:34:02 +00:00

vfs_cluster.c

When allocating a pbuf for the cluster write, do not sleep waiting

2013-08-27 01:31:12 +00:00

vfs_default.c

Fix the comment introduced in r276192 so that it clearly

2014-12-25 14:44:04 +00:00

vfs_export.c

After the changes in r274118 make NOIP kernels compile by hiding an

2014-11-06 12:19:39 +00:00

vfs_extattr.c

Update kernel inclusions of capability.h to use capsicum.h instead; some

2014-03-16 10:55:57 +00:00

vfs_hash.c

Convert vfs hash lock from a mutex to an rwlock.

2014-12-30 21:40:45 +00:00

vfs_init.c

Rename sysctl_lock and _unlock to sysctl_xlock and _xunlock.

2014-10-21 19:02:26 +00:00

vfs_lookup.c

Fix two issues with lockmgr(9) LK_CAN_SHARE() test, which determines

2014-11-02 13:10:31 +00:00

vfs_mount.c

Mountd iterating over the mount points may race with the parallel

2015-02-10 18:00:32 +00:00

vfs_mountroot.c

Remove the no-at variants of the kern_xx() syscall helpers. E.g., we

2014-11-13 18:01:51 +00:00

vfs_subr.c

The VNASSERT in vflush() FORCECLOSE case is trying to panic early to

2015-02-27 16:43:50 +00:00

vfs_syscalls.c

filedesc: simplify fget_unlocked & friends

2015-02-17 23:54:06 +00:00

vfs_vnops.c

Add VN_OPEN_NAMECACHE flag for vn_open_cred(9), which requests that

2014-12-21 13:32:07 +00:00

vnode_if.src

Merge from projects/sendfile:

2014-11-23 12:01:52 +00:00