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* Gigacommit to improve device-driver source compatibility betweenPoul-Henning Kamp2003-03-031-14/+8
| | | | | | | | | | | | | | | | branches: Initialize struct cdevsw using C99 sparse initializtion and remove all initializations to default values. This patch is automatically generated and has been tested by compiling LINT with all the fields in struct cdevsw in reverse order on alpha, sparc64 and i386. Approved by: re(scottl) Notes: svn path=/head/; revision=111815
* Back out M_* changes, per decision of the TRB.Warner Losh2003-02-191-2/+2
| | | | | | | Approved by: trb Notes: svn path=/head/; revision=111119
* Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.Alfred Perlstein2003-01-211-2/+2
| | | | | | | Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT. Notes: svn path=/head/; revision=109623
* Some kernel threads try to do significant work, and the default KSTACK_PAGESScott Long2002-10-021-1/+1
| | | | | | | | | | | | | | | | doesn't give them enough stack to do much before blowing away the pcb. This adds MI and MD code to allow the allocation of an alternate kstack who's size can be speficied when calling kthread_create. Passing the value 0 prevents the alternate kstack from being created. Note that the ia64 MD code is missing for now, and PowerPC was only partially written due to the pmap.c being incomplete there. Though this patch does not modify anything to make use of the alternate kstack, acpi and usb are good candidates. Reviewed by: jake, peter, jhb Notes: svn path=/head/; revision=104354
* Remove #ifdef'ed Giant mutex wrappers round debugging statements.Mark Murray2002-09-211-2/+0
| | | | Notes: svn path=/head/; revision=103765
* Change the suser() API to take advantage of td_ucred as well as do aJohn Baldwin2002-04-011-2/+2
| | | | | | | | | | | | | | | general cleanup of the API. The entire API now consists of two functions similar to the pre-KSE API. The suser() function takes a thread pointer as its only argument. The td_ucred member of this thread must be valid so the only valid thread pointers are curthread and a few kernel threads such as thread0. The suser_cred() function takes a pointer to a struct ucred as its first argument and an integer flag as its second argument. The flag is currently only used for the PRISON_ROOT flag. Discussed on: smp@ Notes: svn path=/head/; revision=93593
* Provide infrastructure for harvesting SWI entropy.Mark Murray2002-03-031-0/+3
| | | | Notes: svn path=/head/; revision=91601
* Massive lint-inspired cleanup.Mark Murray2002-03-031-30/+41
| | | | | | | | | | Remove unneeded includes. Deal with unused function arguments. Resolve a boatload of signed/unsigned imcompatabilities. Etc. Notes: svn path=/head/; revision=91600
* Simple p_ucred -> td_ucred changes to start using the per-thread ucredJohn Baldwin2002-02-271-2/+2
| | | | | | | reference. Notes: svn path=/head/; revision=91406
* o Modify open() and close() for /dev/random to use securelevel_gt() insteadRobert Watson2001-09-261-6/+16
| | | | | | | | | of direct securelevel variable checks. Obtained from: TrustedBSD Project Notes: svn path=/head/; revision=83976
* Use the passed in thread to selrecord() instead of curthread.John Baldwin2001-09-211-1/+1
| | | | Notes: svn path=/head/; revision=83805
* KSE Milestone 2Julian Elischer2001-09-121-7/+8
| | | | | | | | | | | | | | | | | Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha Notes: svn path=/head/; revision=83366
* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inMark Murray2001-05-011-6/+8
| | | | | | | | | | | | | | other "system" header files. Also help the deprecation of lockmgr.h by making it a sub-include of sys/lock.h and removing sys/lockmgr.h form kernel .c files. Sort sys/*.h includes where possible in affected files. OK'ed by: bde (with reservations) Notes: svn path=/head/; revision=76166
* Send the remains (such as I have located) of "block major numbers" toPoul-Henning Kamp2001-03-261-1/+0
| | | | | | | the bit-bucket. Notes: svn path=/head/; revision=74810
* Allow bog-standard ioctls through. There are really handled inMark Murray2001-03-251-1/+9
| | | | | | | higher layers, but there needs to be a "no-error" return here. Notes: svn path=/head/; revision=74771
* Very large makeover of the /dev/random driver.Mark Murray2001-03-101-91/+244
| | | | | | | | | | | | | | | | | | | | | | | | | | | o Separate the kernel stuff from the Yarrow algorithm. Yarrow is now well contained in one source file and one header. o Replace the Blowfish-based crypto routines with Rijndael-based ones. (Rijndael is the new AES algorithm). The huge improvement in Rijndael's key-agility over Blowfish means that this is an extremely dramatic improvement in speed, and makes a heck of a difference in its (lack of) CPU load. o Clean up the sysctl's. At BDE's prompting, I have gone back to static sysctls. o Bug fixes. The streamlining of the crypto stuff enabled me to find and fix some bugs. DES also found a bug in the reseed routine which is fixed. o Change the way reseeds clear "used" entropy. Previously, only the source(s) that caused a reseed were cleared. Now all sources in the relevant pool(s) are cleared. o Code tidy-up. Mostly to make it (nearly) 80-column compliant. Notes: svn path=/head/; revision=74072
* Provide the infrastructure for sysadmins to select the broad classMark Murray2001-02-181-1/+13
| | | | | | | | of entropy harvesting they wish to perform: "ethernet" (LAN), point-to-point and interrupt. Notes: svn path=/head/; revision=72667
* Remove NOBLOCKRANDOM as a compile-time option. Instead, provideMark Murray2001-01-141-19/+52
| | | | | | | | | | | | | | | | | | | exactly the same functionality via a sysctl, making this feature a run-time option. The default is 1(ON), which means that /dev/random device will NOT block at startup. setting kern.random.sys.seeded to 0(OFF) will cause /dev/random to block until the next reseed, at which stage the sysctl will be changed back to 1(ON). While I'm here, clean up the sysctls, and make them dynamic. Reviewed by: des Tested on Alpha by: obrien Notes: svn path=/head/; revision=71037
* select() DKI is now in <sys/selinfo.h>.Garrett Wollman2001-01-091-1/+1
| | | | Notes: svn path=/head/; revision=70834
* D'uh. The explicit reseed was happening at the wrong security/priveligeMark Murray2000-11-251-1/+1
| | | | | | | levels. Notes: svn path=/head/; revision=69174
* Greatly improve the boot-up unblocking time of the entropy device.Mark Murray2000-11-251-1/+10
| | | | Notes: svn path=/head/; revision=69172
* Move suser() and suser_xxx() prototypes and a related #define fromPoul-Henning Kamp2000-10-291-1/+0
| | | | | | | | | | | | <sys/proc.h> to <sys/systm.h>. Correctly document the #includes needed in the manpage. Add one now needed #include of <sys/systm.h>. Remove the consequent 48 unused #includes of <sys/proc.h>. Notes: svn path=/head/; revision=67893
* As the blocking model has seems to be troublesome for many, disableMark Murray2000-10-271-0/+5
| | | | | | | | | | it for now with an option. This option is already deprecated, and will be removed when the entropy-harvesting code is fast enough to warrant it. Notes: svn path=/head/; revision=67689
* Attempt to fix the random read blocking. The old code slept atPeter Wemm2000-10-181-14/+13
| | | | | | | | | | | priority "0" and without PCATCH, so it was uninterruptable. And even when it did wake up after entropy arrived, it exited after the wakeup without actually reading the freshly arrived entropy. I sent this to Mark before but it seems he is in transit. Mark: feel free to replace this if it gets in your way. Notes: svn path=/head/; revision=67286
* After some complaints about the dir names, the random device isMark Murray2000-10-141-9/+37
| | | | | | | | | | | | | | | | | | | | | | | now in dirs called sys/*/random/ instead of sys/*/randomdev/*. Introduce blocking, but only at startup; the random device will block until the first reseed happens to prevent clients from using untrustworthy output. Provide a read_random() call for the rest of the kernel so that the entropy device does not need to be present. This means that things like IPX no longer need to have "device random" hardcoded into thir kernel config. The downside is that read_random() will provide very poor output until the entropy device is loaded and reseeded. It is recommended that developers do NOT use the read_random() call; instead, they should use arc4random() which internally uses read_random(). Clean up the mutex and locking code a bit; this makes it possible to unload the module again. Notes: svn path=/head/; revision=67112
* Remove unneeded includes.Mark Murray2000-09-211-2/+0
| | | | | | | Submitted by: phk Notes: svn path=/head/; revision=66155
* Include <sys/proc.h> to silence suser() compiler warning.Robert Watson2000-09-181-0/+1
| | | | | | | Approved by: markm Notes: svn path=/head/; revision=66044
* The "struct proc" argument to read_random was ill-conceived, and aMark Murray2000-09-121-1/+1
| | | | | | | | | | | hangover from previous experimentation. Remove it. This will clean up gratuitous needs for forward references and other namespace pollution. Moaned about by: bde Brought to my attention by: bp Notes: svn path=/head/; revision=65775
* Large upgrade to the entropy device; mainly inspired by feedbackMark Murray2000-09-101-6/+18
| | | | | | | | | | | | | | | | | | | from many folk. o The reseed process is now a kthread. With SMPng, kthreads are pre-emptive, so the annoying jerkiness of the mouse is gone. o The data structures are protected by mutexes now, not splfoo()/splx(). o The cryptographic routines are broken out into their own subroutines. this facilitates review, and possible replacement if that is ever found necessary. Thanks to: kris, green, peter, jasone, grog, jhb Forgotten to thank: You know who you are; no offense intended. Notes: svn path=/head/; revision=65686
* o Fix a horrible bug where small reads (< 8 bytes) would return theMark Murray2000-07-251-2/+12
| | | | | | | | | | | wrong bytes. o Improve the public interface; use void* instead of char* or u_int64_t to pass arbitrary data around. Submitted by: kris ("horrible bug") Notes: svn path=/head/; revision=63855
* Add randomness write functionality. This does absolutely nothing forMark Murray2000-07-171-1/+1
| | | | | | | | | | | | | | | | entropy estimation, but causes an immediate reseed after the input (read in sizeof(u_int64_t) chunks) is "harvested". This will be used in the reboot "reseeder", coming in another commit. This can be used very effectively at any time you think your randomness is compromised; something like # (ps -gauxwww; netstat -an; dmesg; vmstat -c10 1) > /dev/random will give the attacker something to think about. Notes: svn path=/head/; revision=63306
* Fix bug with a vraiable that needs to be per-process, not static;Mark Murray2000-07-091-8/+12
| | | | | | | | | fix formatting of long macros. Pointed out by: bde Notes: svn path=/head/; revision=62840
* Add entropy gathering code. This will work whether the module isMark Murray2000-07-071-31/+31
| | | | | | | compiled in or loaded. Notes: svn path=/head/; revision=62765
* Staticize a variable.Mark Murray2000-06-281-1/+1
| | | | | | | | | | This fixes the case where linking randomdev into the kernel statically can cause panics at shutdown time. Reported by: sos Notes: svn path=/head/; revision=62217
* I am guilty of an act of ommission. There is no longer a /dev/urandomMark Murray2000-06-271-1/+6
| | | | | | | | | | | | | device with Yarrow, and although I coded for that in dev/MAKEDEV, I forgot to _tell_ folks. This commit adds back the /dev/urandom device (as a duplicate) of /dev/random, until such time as it can be properly announced. This will help the openssl users quite a lot. Notes: svn path=/head/; revision=62149
* style(9) fixes from BDE.Mark Murray2000-06-261-1/+1
| | | | | | | We shouldn't use '#include ""', rather '#include<>'. Notes: svn path=/head/; revision=62117
* Fix include for the non-module case.Mark Murray2000-06-251-1/+1
| | | | | | | Thanks-to: SOS Notes: svn path=/head/; revision=62087
* New machine-independant /dev/random driver.Mark Murray2000-06-251-0/+145
This is work-in-progress, and the entropy-gathering routines are not yet present. As such, this should be viewed as a pretty reasonable PRNG with _ABSOLUTELY_NO_ security!! Entropy gathering will be the subject of ongoing work. This is written as a module, and as such is unloadable, but there is no refcounting done. I would like to use something like device_busy(9) to achieve this (eventually). Lots of useful ideas from: bde, phk, Jeroen van Gelderen Reviewed by: dfr Notes: svn path=/head/; revision=62053
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