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* Don't choke on old sd%d.ctl devices.Poul-Henning Kamp2001-11-031-0/+2
| | | | | | | Tripped over by: Jos Backus <josb@cncdsl.com> Notes: svn path=/head/; revision=85996
* Turn the symlinks around, instead of ad0s1 -> ad0s1c, make it ad0s1c -> ad0s1.Poul-Henning Kamp2001-11-021-13/+23
| | | | | | | Requested by: peter Notes: svn path=/head/; revision=85858
* Fix a problem in the disk related hack where device nodes for a physicallyPoul-Henning Kamp2001-10-281-0/+2
| | | | | | | | | | | non-existent disk in a legacy /dev on a DEVFS system would panic the system if stat(2)'ed. Do not whine about anonymous device nodes not having a si_devsw, they're not supposed to. Notes: svn path=/head/; revision=85624
* Nudge the axe a bit closer to cdevsw[]:Poul-Henning Kamp2001-10-271-2/+55
| | | | | | | | | | | | | | | Make it a panic to repeat make_dev() or destroy_dev(), this check should maybe be neutered when -current goes -stable. Whine if devsw() is called on anon dev_t's in a devfs system. Make a hack to avoid our lazy-eval disk code triggering the above whine. Fix the multiple make_dev() in disk code by making ${disk}${unit}s${slice} an alias/symlink to ${disk}${unit}s${slice}c Notes: svn path=/head/; revision=85603
* disk_clone() was a bit too eager to please: "md0s1ec" is not a validPoul-Henning Kamp2001-10-221-0/+2
| | | | | | | | | device. Noticed by: Chad David <davidc@acns.ab.ca> Notes: svn path=/head/; revision=85311
* KSE Milestone 2Julian Elischer2001-09-121-7/+7
| | | | | | | | | | | | | | | | | 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
* Don't dump on the label sector or below. This avoids clobbering theBruce Evans2001-08-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | label if the dump device overflaps the label (which is a slight misconfiguration). Dump routines don't use dscheck(), so the normal write protection of the label doesn't help. Reduced some nearby overflow bugs. In disk_dumpcheck(), there was (fatal but fail-safe) overflow on i386's with 4GB of memory, at least if Maxmem was the top page (can this happen?). The fix assumes that the sector size divides PAGE_SIZE (dump routines already assume this). In setdumpdev(), the corresponding overflow occurred with only about 2GB of memory on all machines with 32-bit ints. This allowed setdumpdev() to succeed when it shouldn't have, but then disk_dumpcheck() failed safe later. Except in old versions of FreeBSD like RELENG_3 where there is no disk_dumpcheck(). PR: 28164 (label clobbering part) MFC after: 1 week Notes: svn path=/head/; revision=81688
* Remove the hack-around for the slice/label code, it didn'tPoul-Henning Kamp2001-05-291-11/+1
| | | | | | | cover the hole. Notes: svn path=/head/; revision=77408
* The disklabel/slice code is more twisted than I thought. Revert toPoul-Henning Kamp2001-05-281-0/+1
| | | | | | | calling the cdevsw_add() unconditionally. Notes: svn path=/head/; revision=77343
* Create a general facility for making dev_t's depend on anotherPoul-Henning Kamp2001-05-261-4/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_t. The dev_depends(dev_t, dev_t) function is for tying them to each other. When destroy_dev() is called on a dev_t, all dev_t's depending on it will also be destroyed (depth first order). Rewrite the make_dev_alias() to use this dependency facility. kern/subr_disk.c: Make the disk mini-layer use dependencies to make sure all relevant dev_t's are removed when the disk disappears. Make the disk mini-layer precreate some magic sub devices which the disk/slice/label code expects to be there. kern/subr_disklabel.c: Remove some now unneeded variables. kern/subr_diskmbr.c: Remove some ancient, commented out code. kern/subr_diskslice.c: Minor cleanup. Use name from dev_t instead of dsname() Notes: svn path=/head/; revision=77215
* Don't take the detour around devsw() to find out if the proto-cdevswPoul-Henning Kamp2001-05-241-3/+1
| | | | | | | is already initialized. Notes: svn path=/head/; revision=77147
* Always initialize bio_resid from bio_bcount in the disk mini-layer soPoul-Henning Kamp2001-05-081-1/+1
| | | | | | | that the drivers don't have to do it umpteen times. Notes: svn path=/head/; revision=76361
* Make the disk mini-layer check for and handle zero-length transfersPoul-Henning Kamp2001-05-061-0/+6
| | | | | | | instead of the underlying drivers. Notes: svn path=/head/; revision=76324
* Actually biofinish(struct bio *, struct devstat *, int error) is more generalPoul-Henning Kamp2001-05-061-3/+1
| | | | | | | | | than the bioerror(). Most of this patch is generated by scripts. Notes: svn path=/head/; revision=76322
* Dont call device close and ioctl functions if device has disappeared.Søren Schmidt2001-03-131-2/+5
| | | | | | | Reviewed by: phk Notes: svn path=/head/; revision=74206
* Don't clone impossible unit numbers for disks.Poul-Henning Kamp2000-12-151-0/+2
| | | | Notes: svn path=/head/; revision=70058
* Staticize some malloc M_ instances.Poul-Henning Kamp2000-12-081-1/+1
| | | | Notes: svn path=/head/; revision=69774
* Avoid the modules madness I inadvertently introduced by making thePoul-Henning Kamp2000-09-021-12/+1
| | | | | | | | | | | | | | | | | | | | | cloning infrastructure standard in kern_conf. Modules are now the same with or without devfs support. If you need to detect if devfs is present, in modules or elsewhere, check the integer variable "devfs_present". This happily removes an ugly hack from kern/vfs_conf.c. This forces a rename of the eventhandler and the standard clone helper function. Include <sys/eventhandler.h> in <sys/conf.h>: it's a helper #include like <sys/queue.h> Remove all #includes of opt_devfs.h they no longer matter. Notes: svn path=/head/; revision=65374
* Remove all traces of Julians DEVFS (incl from kern/subr_diskslice.c)Poul-Henning Kamp2000-08-201-2/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove old DEVFS support fields from dev_t. Make uid, gid & mode members of dev_t and set them in make_dev(). Use correct uid, gid & mode in make_dev in disk minilayer. Add support for registering alias names for a dev_t using the new function make_dev_alias(). These will show up as symlinks in DEVFS. Use makedev() rather than make_dev() for MFSs magic devices to prevent DEVFS from noticing this abuse. Add a field for DEVFS inode number in dev_t. Add new DEVFS in fs/devfs. Add devfs cloning to: disk minilayer (ie: ad(4), sd(4), cd(4) etc etc) md(4), tun(4), bpf(4), fd(4) If DEVFS add -d flag to /sbin/inits args to make it mount devfs. Add commented out DEVFS to GENERIC Notes: svn path=/head/; revision=64880
* End two weeks of on and off debugging. Fix the crash on the NthWarner Losh2000-07-051-24/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | insertion of a CF card, for random values of N > 1. With these fixes, I've been able to do 100 insert/remove of the cards w/o a crash with lots of system activity going on that in the past would help trigger the crash. The problem: FreeBSD creates dev_t's on the fly as they are needed and never destroys them. These dev_t's point to a struct disk that is used for housekeeping on the disk. When a device goes away, the struct disk pointer becomes a dangling pointer. Sometimes when the device comes back, the pointer will point to the new struct disk (in which case the insertion will work). Other times it won't (especially if any length of time has passed, since it is dependent on memory returned from malloc). The Fix: There is one of these dev_t's that is always correct. The device for the WHOLE_DISK_SLICE is always right. It gets set at create_disk() time. So, the fix is to spend a little CPU time and lookup the WHOLE_DISK_SLICE dev_t and use the si_disk from that in preference to the one that's in the device asking to do the I/O. In addition, we change the test of si_disk == NULL meaning that the dev needed to inherit properties from the pdev to dev->si_disk != pdev->si_disk. This test is a little stronger than the previous test, but can sometimes be fooled into not inheriting. However, the results of this fooling are that the old values will be used, which will generally always be the same as before. si_drv[12] are the only values that are copied that might pose a problem. They tend to change as the si_disk field would change, so it is a hole, but it is a small hole. One could correctly argue that one should replace much of this code with something much much better. I would be on the pro side of that argument. Reviewed by: phk (who also ported the original patch to current) Sponsored by: Timing Solutions Notes: svn path=/head/; revision=62617
* Previous commit changing SYSCTL_HANDLER_ARGS violated KNF.Poul-Henning Kamp2000-07-041-1/+1
| | | | | | | Pointed out by: bde Notes: svn path=/head/; revision=62573
* Style police catches up with rev 1.26 of src/sys/sys/sysctl.h:Poul-Henning Kamp2000-07-031-1/+1
| | | | | | | | | | | Sanitize SYSCTL_HANDLER_ARGS so that simplistic tools can grog our sources: -sysctl_vm_zone SYSCTL_HANDLER_ARGS +sysctl_vm_zone (SYSCTL_HANDLER_ARGS) Notes: svn path=/head/; revision=62454
* Add 'kern.disks', a sysctl which returns the list of disks fromNeil Blakey-Milner2000-06-221-0/+29
| | | | | | | | | | disk_enumerate(), space delimited. This allows non-root users to get a list of disks and will simplify libdisk's Disk_Names(). Reviewed by: phk Notes: svn path=/head/; revision=61953
* Add disk_enumerate() for finding names of disks. Vinum and libh willPoul-Henning Kamp2000-06-151-1/+15
| | | | | | | | | | | | | | | need this RSN. Remove a pointless warning in the root device locating code. Remove the "wd" compatibility name from the "ad" driver. WARNING: If you have not updated to use /dev/wd* in your /etc/fstab and modern bootblocks, it would be a very good idea to do so BEFORE you upgrade your kernel. Notes: svn path=/head/; revision=61717
* Separate the struct bio related stuff out of <sys/buf.h> intoPoul-Henning Kamp2000-05-051-1/+1
| | | | | | | | | | | | | | | | | | <sys/bio.h>. <sys/bio.h> is now a prerequisite for <sys/buf.h> but it shall not be made a nested include according to bdes teachings on the subject of nested includes. Diskdrivers and similar stuff below specfs::strategy() should no longer need to include <sys/buf.> unless they need caching of data. Still a few bogus uses of struct buf to track down. Repocopy by: peter Notes: svn path=/head/; revision=60041
* Clone the {b|bio}_offset field, and make sure it is always initializedPoul-Henning Kamp2000-04-251-0/+2
| | | | | | | | | | in struct bio. Eventually, bio_offset will probably obsolete the bio_blkno and bio_pblkno fields. Remove the special hack in atapi-cd.c to determine of bio_offset was valid. Notes: svn path=/head/; revision=59623
* Complete the bio/buf divorce for all code below devfs::strategyPoul-Henning Kamp2000-04-151-11/+11
| | | | | | | | | | | | | Exceptions: Vinum untouched. This means that it cannot be compiled. Greg Lehey is on the case. CCD not converted yet, casts to struct buf (still safe) atapi-cd casts to struct buf to examine B_PHYS Notes: svn path=/head/; revision=59249
* Move B_ERROR flag to b_ioflags and call it BIO_ERROR.Poul-Henning Kamp2000-04-021-1/+1
| | | | | | | | | | | | | | | | (Much of this done by script) Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED. Move b_pblkno and b_iodone_chain to struct bio while we transition, they will be obsoleted once bio structs chain/stack. Add bio_queue field for struct bio aware disksort. Address a lot of stylistic issues brought up by bde. Notes: svn path=/head/; revision=58934
* Fixed a null pointer panic for dumpon(8) on a nonexistent device whoseBruce Evans2000-03-091-0/+2
| | | | | | | | | | driver uses the new disk layer. Reviewed by: phk Approved by: jkh Notes: svn path=/head/; revision=57850
* Update the ata driver to take more advantage of newbus, thisSøren Schmidt2000-02-181-1/+4
| | | | | | | | | | | | | | | | | | | was needed to make attach/detach of devices work, which is needed for the PCCARD support. (PCCARD support is still not working though, more to come on that) Support the CMD646 chip which is used on many alphas, sadly only in WDMA2 mode, as the silicon is broken beyond belief for UDMA modes. Lots of cosmetic fixes here and there. Sorry for the size of this megapatchfromhell but it was not possible otherwise... newbus patches based on work from: dfr (Doug Rabson) Notes: svn path=/head/; revision=57325
* rename disk_delete() to disk_destroy().Poul-Henning Kamp2000-01-281-1/+1
| | | | Notes: svn path=/head/; revision=56767
* Also handle zero return from dscheck().Poul-Henning Kamp2000-01-101-1/+1
| | | | | | | PR: 15956 Notes: svn path=/head/; revision=55763
* Don't ignore return value from tsleep().Poul-Henning Kamp1999-12-191-1/+3
| | | | | | | Spotted by: charnier Notes: svn path=/head/; revision=54815
* Conditionalise unwanted chattyness.Jordan K. Hubbard1999-11-191-1/+2
| | | | Notes: svn path=/head/; revision=53437
* Put a lock on the disk structure while we open to avoid races.Poul-Henning Kamp1999-11-061-3/+15
| | | | | | | PR: 14486 Notes: svn path=/head/; revision=52917
* Trim unused options (or #ifdef for undoc options).Peter Wemm1999-10-111-1/+0
| | | | | | | Submitted by: phk Notes: svn path=/head/; revision=52128
* be more consistent about passing the whole/raw dev_t to the driverPoul-Henning Kamp1999-10-041-4/+2
| | | | Notes: svn path=/head/; revision=51924
* In some drivers we use two devices to be able to boot.Søren Schmidt1999-10-021-1/+2
| | | | | | | | | | | | So if si_iosize_max is allready set, dont mess with it.. Also just log the problem with maxphys not being set once. designed by: phk tested by: sos Notes: svn path=/head/; revision=51878
* Fix a problem relating to si_iosize_max which broke scsi devices.Poul-Henning Kamp1999-10-021-5/+7
| | | | Notes: svn path=/head/; revision=51860
* Make all slices/partitions correctly inherit si_* fields.Poul-Henning Kamp1999-09-301-6/+13
| | | | | | | Lightly tested by: msmith Notes: svn path=/head/; revision=51826
* Fix disk_close once more, and better this time.Poul-Henning Kamp1999-09-301-2/+2
| | | | | | | Spotted by: bde Notes: svn path=/head/; revision=51822
* Test the slices for openness before we close them; doing it the other wayMike Smith1999-09-301-1/+1
| | | | | | | | | around meant that the higher level close routine never gets called. (phk is on the road; this is a quick fix to get things working and may need more polish) Notes: svn path=/head/; revision=51807
* Register the right cdevsw on the master device.Poul-Henning Kamp1999-09-131-1/+1
| | | | | | | Detected by: sos Notes: svn path=/head/; revision=51243
* Bite the bullet and allocate the devsw entry at compile time.Poul-Henning Kamp1999-09-121-20/+14
| | | | Notes: svn path=/head/; revision=51215
* Use a different tactic when creating the devsw so that disk_create()Poul-Henning Kamp1999-09-121-44/+24
| | | | | | | doesn't need to malloc. Notes: svn path=/head/; revision=51198
* Changes to centralise the default blocksize behaviour.Julian Elischer1999-09-091-0/+12
| | | | | | | | | More likely to follow. Submitted by: phk@freebsd.org Notes: svn path=/head/; revision=51111
* Improve the micro "disk" layer after gaining more experience with it.Poul-Henning Kamp1999-09-011-16/+70
| | | | Notes: svn path=/head/; revision=50728
* Add micro "disk" layer which should enable us to pull all the slice/labelPoul-Henning Kamp1999-08-291-0/+183
stuff out of the device drivers. Notes: svn path=/head/; revision=50565
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