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cc5934f5af
freebsd-nq/sys/kern
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Don Lewis 47934cef8f Split the mlock() kernel code into two parts, mlock(), which unpacks 
the syscall arguments and does the suser() permission check, and
kern_mlock(), which does the resource limit checking and calls
vm_map_wire().  Split munlock() in a similar way.

Enable the RLIMIT_MEMLOCK checking code in kern_mlock().

Replace calls to vslock() and vsunlock() in the sysctl code with
calls to kern_mlock() and kern_munlock() so that the sysctl code
will obey the wired memory limits.

Nuke the vslock() and vsunlock() implementations, which are no
longer used.

Add a member to struct sysctl_req to track the amount of memory
that is wired to handle the request.

Modify sysctl_wire_old_buffer() to return an error if its call to
kern_mlock() fails.  Only wire the minimum of the length specified
in the sysctl request and the length specified in its argument list.
It is recommended that sysctl handlers that use sysctl_wire_old_buffer()
should specify reasonable estimates for the amount of data they
want to return so that only the minimum amount of memory is wired
no matter what length has been specified by the request.

Modify the callers of sysctl_wire_old_buffer() to look for the
error return.

Modify sysctl_old_user to obey the wired buffer length and clean up
its implementation.

Reviewed by:	bms
2004-02-26 00:27:04 +00:00
..
bus_if.m Introduce BUS_CONFIG_INTR(). The method allows devices to tell parents 2003-09-10 21:37:10 +00:00
clock_if.m
device_if.m
genassym.sh
imgact_aout.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
imgact_elf32.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
imgact_elf64.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
imgact_elf.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
imgact_gzip.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
imgact_shell.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
inflate.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
init_main.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
init_sysent.c Regen after adding ksem_timedwait(). 2004-02-03 05:11:31 +00:00
kern_acct.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
kern_acl.c Update my personal copyrights and NETA copyrights in the kernel 2004-02-22 00:33:12 +00:00
kern_alq.c Allow MAC policies to block/revoke kern_alq write access to a file. 2003-10-25 16:10:41 +00:00
kern_clock.c Catch a few places where NULL (pointer) was used where 0 (integer) was 2003-12-23 02:36:43 +00:00
kern_condvar.c - Add a flags parameter to mi_switch. The value of flags may be SW_VOL or 2004-01-25 03:54:52 +00:00
kern_conf.c Fix two oversights here: don't trash the freelist, and properly cleanup 2004-02-23 08:42:55 +00:00
kern_context.c Change the clear_ret argument of get_mcontext() to be a flags argument. 2003-11-09 20:31:04 +00:00
kern_descrip.c Split the mlock() kernel code into two parts, mlock(), which unpacks 2004-02-26 00:27:04 +00:00
kern_environment.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
kern_event.c Make sure to wake up any select waiters when closing a kqueue (also, not 2004-02-20 04:00:48 +00:00
kern_exec.c Checkpoint a hack to enable running i386 libc_r binaries on a 64 bit 2004-02-18 00:54:17 +00:00
kern_exit.c A Linux thread created using clone() should not send SIGCHLD to its 2004-02-19 06:43:48 +00:00
kern_fork.c Split the mlock() kernel code into two parts, mlock(), which unpacks 2004-02-26 00:27:04 +00:00
kern_idle.c Always set a process' state to normal when it is fully constructed in 2004-02-05 21:01:37 +00:00
kern_intr.c - Add a flags parameter to mi_switch. The value of flags may be SW_VOL or 2004-01-25 03:54:52 +00:00
kern_jail.c Rework jail_attach(2) so that an already jailed process cannot hop 2004-02-19 21:03:20 +00:00
kern_kse.c Use mtx_assert() rather than using a home-rolled version. 2004-01-28 20:26:39 +00:00
kern_kthread.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
kern_ktr.c Update the license on this file to be a bit more sane. 2003-09-10 01:09:32 +00:00
kern_ktrace.c Reduce gratuitous includes: don't include jail.h if it's not needed. 2004-01-21 17:10:47 +00:00
kern_linker.c Split the mlock() kernel code into two parts, mlock(), which unpacks 2004-02-26 00:27:04 +00:00
kern_lock.c Add pid to the info printed in lockmgr_printinfo. This makes VFS 2004-01-06 04:34:13 +00:00
kern_lockf.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
kern_mac.c Update my personal copyrights and NETA copyrights in the kernel 2004-02-22 00:33:12 +00:00
kern_malloc.c Rename the kern.vm.kmem.size tunable to the more logical vm.kmem_size. To 2004-01-27 15:59:38 +00:00
kern_mib.c Change all SYSCTLS which are readonly and have a related TUNABLE 2003-10-21 18:28:36 +00:00
kern_module.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
kern_mtxpool.c Rearrange the SYSINIT order to call lockmgr_init() earlier so that 2003-07-16 01:00:39 +00:00
kern_mutex.c Add a reset sysctl for mutex profiling: zeros all of the mutex 2004-01-28 22:11:53 +00:00
kern_ntptime.c Deal with MOD_FREQUENCY before MOD_OFFSET because the latter is the 2004-01-24 21:48:43 +00:00
kern_physio.c Send B_PHYS out to pasture, it no longer serves any function. 2003-11-15 09:28:09 +00:00
kern_poll.c - Add a flags parameter to mi_switch. The value of flags may be SW_VOL or 2004-01-25 03:54:52 +00:00
kern_proc.c Split the mlock() kernel code into two parts, mlock(), which unpacks 2004-02-26 00:27:04 +00:00
kern_prot.c Don't grab Giant in crfree(), since prison_free() no longer requires it. 2004-01-23 21:07:52 +00:00
kern_resource.c Argh! Fix a bogon. lim_cur() was returning the hard (max) limit rather 2004-02-11 18:04:13 +00:00
kern_sema.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
kern_shutdown.c - Add a flags parameter to mi_switch. The value of flags may be SW_VOL or 2004-01-25 03:54:52 +00:00
kern_sig.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
kern_subr.c Rename iov_to_uio to uiofromiov to be more consistent with other 2004-02-04 08:43:21 +00:00
kern_switch.c - style fixes to the critical_exit() KASSERT(). 2004-02-02 08:13:27 +00:00
kern_sx.c Simplify check. We are only able to check exclusive lock and if 2004-02-19 14:19:31 +00:00
kern_synch.c - Revert rev 1.240 we no longer need a kthread for loadav(). 2004-02-01 05:37:36 +00:00
kern_syscalls.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
kern_sysctl.c Split the mlock() kernel code into two parts, mlock(), which unpacks 2004-02-26 00:27:04 +00:00
kern_tc.c Write 100 times for tomorrow: 2004-01-22 19:50:06 +00:00
kern_thr.c Update powerpc to use the (old thread,new thread) calling convention 2003-08-14 03:56:24 +00:00
kern_thread.c Use mtx_assert() rather than using a home-rolled version. 2004-01-28 20:26:39 +00:00
kern_time.c constify the second args to timevaladd() and timevalsub(). 2003-10-26 02:19:00 +00:00
kern_timeout.c Make the DIAGNOSTIC code which complains about long {call|time}out(9) 2003-12-07 20:03:28 +00:00
kern_umtx.c Return EINVAL if the contested bit is not set on the umtx passed to 2003-09-07 11:14:52 +00:00
kern_uuid.c Fix generation of random multicast MAC address. 2004-01-22 13:34:11 +00:00
kern_xxx.c Correct mostly harmless off-by-one error in getdomainname(). 2003-09-13 17:12:22 +00:00
ksched.c sched_setscheduler: Return EINVAL when a invalid policy is specified, 2003-09-13 18:46:24 +00:00
link_elf_obj.c Add the mlockall() and munlockall() system calls. 2003-08-11 07:14:08 +00:00
link_elf.c Add the mlockall() and munlockall() system calls. 2003-08-11 07:14:08 +00:00
linker_if.m The method link_preload_finish is not static. 2003-09-20 17:39:32 +00:00
Make.tags.inc Finish driving a stake through the heart of netns and the associated 2003-03-05 19:24:24 +00:00
Makefile Finish driving a stake through the heart of netns and the associated 2003-03-05 19:24:24 +00:00
makesyscalls.sh Remove the namespace column from the syscalls tables. We don't actually 2003-12-23 03:50:43 +00:00
md4c.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
md5c.c Revert stuff which accidentally ended up in the previous commit. 2003-07-22 10:36:36 +00:00
p1003_1b.c Use __FBSDID(). 2003-06-11 06:34:30 +00:00
posix4_mib.c Use __FBSDID(). 2003-06-11 06:34:30 +00:00
sched_4bsd.c - Disable ithread binding in all cases for now. This doesn't make as much 2004-02-01 06:20:18 +00:00
sched_ule.c - Allow interactive tasks to use the maximum time-slice. This is not as 2004-02-01 10:38:13 +00:00
subr_acl_posix1e.c Update my personal copyrights and NETA copyrights in the kernel 2004-02-22 00:33:12 +00:00
subr_autoconf.c Revert stuff which accidentally ended up in the previous commit. 2003-07-22 10:36:36 +00:00
subr_blist.c Expand inline the relevant parts of src/COPYRIGHT for Matt Dillon's 2003-08-12 23:24:05 +00:00
subr_bus.c Whitespace cleanup 2004-02-24 19:31:30 +00:00
subr_clist.c Revert stuff which accidentally ended up in the previous commit. 2003-07-22 10:36:36 +00:00
subr_clock.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_devstat.c Device megapatch 4/6: 2004-02-21 21:10:55 +00:00
subr_disk.c Report bio_pblkbo instead of bio_blkno. 2003-10-18 17:27:10 +00:00
subr_eventhandler.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_hints.c Add a resource_disabled() helper function that returns true (non-zero) if 2003-07-02 16:01:38 +00:00
subr_kobj.c * Add multiple inheritance to kobj. Each class can have zero or more base 2003-10-16 09:16:28 +00:00
subr_log.c Device megapatch 4/6: 2004-02-21 21:10:55 +00:00
subr_mbpool.c Pass MTX_DEF as the last argument to mtx_init() instead of 0. This 2003-12-07 21:53:41 +00:00
subr_mbuf.c Track current and peak sfbuf usage, export the values via sysctl. 2003-12-27 07:52:47 +00:00
subr_mchain.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_module.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_msgbuf.c Put the message about msgbuf cksum mismatch under bootverbose and tell 2003-09-05 11:12:00 +00:00
subr_param.c More pipe changes: 2003-08-11 05:51:51 +00:00
subr_pcpu.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_power.c Move the kernel power change printf under bootverbose since the 2004-01-02 18:24:13 +00:00
subr_prf.c Add support for 'h' and 'hh' modifiers for printf(9). 2004-02-19 05:29:39 +00:00
subr_prof.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_rman.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_rtc.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_sbuf.c Mechanical whistespace cleanup. 2004-02-17 10:21:03 +00:00
subr_scanf.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
subr_smp.c - Move smp_topology to subr_smp.c so that it is defined on all architectures. 2004-01-24 19:52:48 +00:00
subr_taskqueue.c Tidy up the thread taskqueue implementation and close a lost wakeup race. 2004-02-19 22:03:52 +00:00
subr_trap.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
subr_turnstile.c - Add a flags parameter to mi_switch. The value of flags may be SW_VOL or 2004-01-25 03:54:52 +00:00
subr_witness.c Remove a bogus assertion. 2004-02-03 15:14:27 +00:00
sys_generic.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
sys_pipe.c Assert pipe mutex in pipeselwakeup(), as we manipulate pipe_state 2004-02-26 00:18:22 +00:00
sys_process.c When reparenting a process in the PT_DETACH code, only set p_sigparent 2004-02-19 10:39:42 +00:00
sys_socket.c Initialize struct fileops with C99 sparse initialization. 2003-06-18 18:16:40 +00:00
syscalls.c Regen after adding ksem_timedwait(). 2004-02-03 05:11:31 +00:00
syscalls.master Add ksem_timedwait() to complement ksem_wait(). 2004-02-03 05:08:32 +00:00
sysv_ipc.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
sysv_msg.c Slight whitespace consistency improvement: 2003-11-07 04:47:14 +00:00
sysv_sem.c Reduce the overhead of semop() by using the kernel stack instead of 2003-12-19 13:07:17 +00:00
sysv_shm.c Correct a reference counting bug in shmat(2). If vm_map_find(9) 2004-02-05 18:00:35 +00:00
tty_compat.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
tty_conf.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
tty_cons.c Device megapatch 4/6: 2004-02-21 21:10:55 +00:00
tty_pty.c Device megapatch 4/6: 2004-02-21 21:10:55 +00:00
tty_subr.c Revert stuff which accidentally ended up in the previous commit. 2003-07-22 10:36:36 +00:00
tty_tty.c Device megapatch 4/6: 2004-02-21 21:10:55 +00:00
tty.c Device megapatch 3/6: 2004-02-21 20:41:11 +00:00
uipc_accf.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
uipc_cow.c Handle sf_buf_alloc() returning null. This can happen if the 2004-01-17 21:16:51 +00:00
uipc_domain.c move domain list mutex initialization to earlier in the boot sequence so 2003-09-02 20:59:23 +00:00
uipc_jumbo.c Lock the vm object when removing a page. 2003-06-11 21:23:04 +00:00
uipc_mbuf2.c m_tag fixups in preparation for heavier use: 2004-01-02 17:27:39 +00:00
uipc_mbuf.c Style fixes: don't indent variable names. 2004-02-05 08:29:27 +00:00
uipc_proto.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
uipc_sem.c Add ksem_timedwait() to complement ksem_wait(). 2004-02-03 05:08:32 +00:00
uipc_sockbuf.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
uipc_socket2.c Locking for the per-process resource limits structure. 2004-02-04 21:52:57 +00:00
uipc_socket.c Always socantsendmore() before deallocating a socket. This, in turn, 2004-02-12 01:48:40 +00:00
uipc_syscalls.c Add the SF_NODISKIO flag to sendfile. This flag causes sendfile to be 2004-02-08 07:35:48 +00:00
uipc_usrreq.c If we're going to panic(), do it before dereferencing a NULL pointer. 2004-02-22 01:11:53 +00:00
vfs_acl.c Update my personal copyrights and NETA copyrights in the kernel 2004-02-22 00:33:12 +00:00
vfs_aio.c Send B_PHYS out to pasture, it no longer serves any function. 2003-11-15 09:28:09 +00:00
vfs_bio.c Device megapatch 6/6: 2004-02-21 21:57:26 +00:00
vfs_cache.c - Apply a big giant lock around the namecache. This has been sitting in 2003-10-05 07:13:50 +00:00
vfs_cluster.c Update the statfs structure with 64-bit fields to allow 2003-11-12 08:01:40 +00:00
vfs_default.c Remove mntvnode_mtx and replace it with per-mountpoint mutex. 2003-11-05 04:30:08 +00:00
vfs_export.c Guard against MLEN growing larger than a uint8_t due to MSIZE grwoing to a 2003-07-26 07:23:24 +00:00
vfs_extattr.c Correct a comment. 2004-02-17 12:30:32 +00:00
vfs_init.c Remove opv_desc_vector from vfs_add_vnodeops, since it is defined 2004-02-15 17:27:33 +00:00
vfs_lookup.c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
vfs_mount.c Don't ignore errors from vfs_allocate_syncvnode. 2004-02-18 05:20:54 +00:00
vfs_subr.c Split the mlock() kernel code into two parts, mlock(), which unpacks 2004-02-26 00:27:04 +00:00
vfs_syscalls.c Correct a comment. 2004-02-17 12:30:32 +00:00
vfs_vnops.c v_vxproc was a bogus name for a thread (pointer). 2003-12-28 09:12:56 +00:00
vnode_if.src Rename VOP_RMEXTATTR() to VOP_DELETEEXTATTR() for consistency with the 2003-07-28 18:53:29 +00:00