1 - ptrace(2) syscall for native emulation
2 - common ptrace(2) syscall code (shared with compat_netbsd32)
3 - support routines that are shared with PROCFS and/or KTRACE
* Add module glue for #1 and #2. Both modules will be built-in to the
kernel if "options PTRACE" is included in the config file (this is
the default, defined in sys/conf/std).
* Mark the ptrace(2) syscall as modular in syscalls.master (generated
files will be committed shortly).
* Conditionalize all remaining portions of PTRACE code on a new kernel
option PTRACE_HOOKS.
XXX Instead of PROCFS depending on 'options PTRACE', we should probably
just add a procfs attribute to the sys/kern/sys_process.c file's
entry in files.kern, and add PROCFS to the "#if defineds" for
process_domem(). It's really confusing to have two different ways
of requiring this file.
uap is supposed to hold init's argv[], so it's 3 * sizeof(char *), the bug
was to copyout(..., sizeof(args)) which is an array of syscallargs, not argv
*
module code from module_init() rather than waiting until after calling
exec_init(). Use a RUN_ONCE routine at entry to each sys_sem* syscall
to establish the exithook, and no longer KASSERT that the hook has
been set before removing it. (A manually loaded module can be unloaded
before any syscalls have been invoked.)
Remove the conditional calls to the various xxx_init() routines from
init_main.c - we now rely on module_init() to handle initialization.
Let each sub-component's xxx_init() routine handle its own sysctl
sub-tree initialization; this removes another set of #ifdef ugliness.
Tested both built-in and loadable versions and verified that atf
test kernel/t_sysv passes.
a kernel history, settable via the SCDEBUG_KERNHIST flag.
this requires a fairly significantly different set of messages than the
normal debug as histories are restricted:
- each message can take one literal format string and upto 4
arguments
- the arguments can not be strings if you want vmstat -u to
work (this could be fixed, and i might, as it would be nice
if we could print syscall names as well as numbers.)
introduce SCDEBUG_DEFAULT that is settable in the kernel config.
fix a problem in kernhist_dump_histories() where it would crash when a
history with no allocated entries was found.
extend kernhist_dumpmask() to handle the usbhist and scdebughist.
- move the syncer into kern/vfs_subr.c.
- change the syncer to process the mountlist and VFS_SYNC as appropriate.
- use an API for mount points similiar to the API for vnodes:
- vfs_syncer_add_to_worklist(struct mount *mp) to add
- vfs_syncer_remove_from_worklist(struct mount *mp) to remove a mount.
No objections on tech-kern@
Add: options SPLASHSCREEN
makeoptions SPLASHSCREEN_IMAGE="path/to/image"
to your config file. So far it will work on amd64 and RPI/RPI2.
This commit was with ideas, help, and OK from jmcneill@.
can start up. this solves the problem where a console device needs
mountroot to complete attaching, and must create wsdisplay0 before
init tries to open /dev/console. fixes PR#49709.
XXX: pullup-7
Rip out all the needless MAC address and date/time leakage. No more
uuid_init necessary, nor contention over a global uuid state.
While here, simplify uuid_snprintf and fix a strict aliasing
violation.
- Do rnd_init_softint as early as possible in main, after configure2,
and before networking is initialized.
- Initialize the rnd_wakeup softint in rnd_init_softint, not lazily in
rnd_schedule_wakeup.
ok tls
This reverts
sys/dev/rnd_private.h -> r1.1
sys/kern/init_main.c -> r1.450
sys/kern/kern_rndq.c -> r1.14
sys/kern/kern_rndsink.c -> r1.2
Parts of these changes will be added back, and the rndsource
callbacks will be fixed to avoid the lock recursion bug that
motivated the stop-gaps in the first place.
ok tls
hardware RNGs using the polling mode of operation:
1) Initialize the rng subsystem soft interrupts as early in kernel startup
as seems safe (we have no MI guarantee that softints are working at all
until configure2() returns, AFAICT).
This should have the rnd subsystem able to process events via softint
before the network subsystem (a notorious early user of entropy) starts.
2) Remove the shortcut calls to rnd_process_events() from
rnd_schedule_process(), with the result that until the softint is installed
rnd_process_events() is a NOP.
3) Directly call rnd_process_events() in rnd_extract_data(),
rnd_maybe_extract(), and rnd_init_softint(). This should suck up any
samples actually collected as early as possible.
