Commit graph

239 commits

Author SHA1 Message Date
Philip Homburg
c5efbf71c0 first commit of extra ptrace code for fault injection 2006-08-28 14:59:56 +00:00
Philip Homburg
62cb625f1b Removed superfluous assignment to text_base. Reported by Ildar Ismagilov. 2006-08-28 14:59:55 +00:00
Philip Homburg
4ba5826ba6 Improved access checks in system.c. Grant drivers and FS the rights they need. 2006-08-10 10:56:16 +00:00
Ben Gras
ec4223d96a More stack for system. 2006-07-25 09:38:24 +00:00
Philip Homburg
d40007667c Do not report non-safe sys_sdevio calls when the address is 'SELF' 2006-07-13 14:46:53 +00:00
Philip Homburg
6f4091eb8c Added do_readbios. Added debugging output for unexpected use of unsafe copy
functions.
2006-07-10 12:27:26 +00:00
Ben Gras
407eefe63a Compile fix 2006-06-29 14:23:33 +00:00
Ben Gras
f1222a09a6 Make stack traces on exceptions possible. 2006-06-29 13:35:27 +00:00
Ben Gras
607fb6bf7f Add a flag to grants system indicating a slot is VALID; so a slot
can be reserved (USED), while toggling VALID on and off.
2006-06-27 12:19:45 +00:00
Ben Gras
3b814d36d1 Rename paramctl to setgrant. 2006-06-23 15:35:05 +00:00
Philip Homburg
add4be444f get_sys_bits 2006-06-23 15:32:24 +00:00
Ben Gras
002922fa4c New kernel call, SYS_PARAMCTL, that sets parameters of the caller
and is therefore unprivileged. Used to set grant tables.
2006-06-23 15:07:41 +00:00
Ben Gras
d402047222 Added vectored variant of sys_safecopy*. 2006-06-23 11:54:03 +00:00
Ben Gras
3061d7b17a Changed do_devio not to require DIO_TYPE, but to extract type
from DIO_REQUEST. Also do_vdevio. Also do_sdevio, but this
function also supports grant id's and offsets.

do_segctl: rename protected to prot.

do_umap: support for GRANT_SEG umap.

do_privctl: support SYS_PRIV_SET_GRANTS, which sets location and size
of in-own-address-space grant table.

do_safecopy: functions to verify and perform 'safe' (grant-based) copies.
2006-06-20 10:03:10 +00:00
Ben Gras
ada6592af9 Prototype of do_safecopy 2006-06-20 09:59:50 +00:00
Ben Gras
bf6fa2acd0 Introduced global sys_call_code to check in called kernel call
implementation functions.

Changed check in system.c to check compile-time-sized bitmap of
kernel calls.

Added SYS_SAFECOPYFROM and SYS_SAFECOPYTO, both mapping to
do_safecopy (that's what sys_call_code is used for).
2006-06-20 09:58:58 +00:00
Ben Gras
b89c6634f5 Use endpoint_t. New prototypes for related to grants and safecopy functions. 2006-06-20 09:57:00 +00:00
Ben Gras
2e89eb5270 Change allowed kernel call bitmap to an array of bitmaps to allow
any number of kernel calls.

Allowed kernel calls are stored in table.c for every image process as a
variably-sized array of allowed calls. This is used to fill the bitmap
of size determined at compile time by the number of kernel calls. This
filling is done by main.c. There is a special call called SYS_ALL_CALLS
which fills the bitmap of allowed calls completely, if that is the only
entry in the array.
2006-06-20 09:56:06 +00:00
Ben Gras
eecb40cf21 Rename protected to prot for g++ 2006-06-20 09:52:11 +00:00
Ben Gras
28950e6104 Use endpoint_t type 2006-06-20 09:51:49 +00:00
Ben Gras
831bc7ecd1 Move bitmap manipulation macros to <minix/bitmap.h> 2006-06-20 09:50:26 +00:00
Philip Homburg
15b8fe54a8 Better initialization of the memory map of processes that are part of the
image. Removed NO_MAP flag.
2006-05-11 14:49:46 +00:00
Ben Gras
3172b4d0ad Patches by Jeff Bailey for posixifications. 2006-04-09 23:16:13 +00:00
Ben Gras
eae250dea4 . load average calculation changed to calculate it all over every tick
instead of keeping a running total of enqueued processes
   (because somehow the load average was broken)
 . added SI_KPROC_TAB to get a copy of kernel process table from PM, for
   a top implementation
 . fixed arg to sys_nice() to make it an endpoint, not a slot number
2006-03-16 09:33:35 +00:00
Philip Homburg
7f861650b0 Use the sysutil library's printf code also for the kernel. 2006-03-15 16:15:23 +00:00
Philip Homburg
c1da6e6e24 Allow a process to kill itself. Remove the endpoint of a process that kills
itself before reporting the singal to pm.
2006-03-15 12:01:59 +00:00
Ben Gras
55bdde85f0 Hack out of proc.c; function and flags width in ipc.h back to nibbles
instead of bytes for backwards compatability
2006-03-15 11:29:54 +00:00
Ben Gras
8500d0f238 Backwards compatability hack 2006-03-15 11:11:54 +00:00
Ben Gras
c236121692 Let reboot work again by making PM check for RBT_REBOOT 2006-03-10 16:50:27 +00:00
Jorrit Herder
021e3234d8 Jorrit's ... "progress?" 2006-03-10 16:10:05 +00:00
Ben Gras
0d831b9c22 Don't print anything if anything is wrong in send_sig() 2006-03-09 14:02:56 +00:00
Ben Gras
6d98f7205a Verify if log process numbers are sensible 2006-03-09 14:00:33 +00:00
Ben Gras
5498a74d87 Typo in comment. 2006-03-09 13:59:59 +00:00
Philip Homburg
4b62006c04 Fixed typo. 2006-03-08 12:30:43 +00:00
Philip Homburg
167ea0faa5 Added some disabled debug code. 2006-03-08 12:06:33 +00:00
Philip Homburg
9a1dfc5128 Do not confuse proc with proc_addr if you want a bug free kernel. 2006-03-08 11:59:59 +00:00
Ben Gras
1335d5d700 'proc number' is process slot, 'endpoint' are generation-aware process
instance numbers, encoded and decoded using macros in <minix/endpoint.h>.

proc number -> endpoint migration
  . proc_nr in the interrupt hook is now an endpoint, proc_nr_e.
  . m_source for messages and notifies is now an endpoint, instead of
    proc number.
  . isokendpt() converts an endpoint to a process number, returns
    success (but fails if the process number is out of range, the
    process slot is not a living process, or the given endpoint
    number does not match the endpoint number in the process slot,
    indicating an old process).
  . okendpt() is the same as isokendpt(), but panic()s if the conversion
    fails. This is mainly used for decoding message.m_source endpoints,
    and other endpoint numbers in kernel data structures, which should
    always be correct.
  . if DEBUG_ENABLE_IPC_WARNINGS is enabled, isokendpt() and okendpt()
    get passed the __FILE__ and __LINE__ of the calling lines, and
    print messages about what is wrong with the endpoint number
    (out of range proc, empty proc, or inconsistent endpoint number),
    with the caller, making finding where the conversion failed easy
    without having to include code for every call to print where things
    went wrong. Sometimes this is harmless (wrong arg to a kernel call),
    sometimes it's a fatal internal inconsistency (bogus m_source).
  . some process table fields have been appended an _e to indicate it's
    become and endpoint.
  . process endpoint is stored in p_endpoint, without generation number.
    it turns out the kernel never needs the generation number, except
    when fork()ing, so it's decoded then.
  . kernel calls all take endpoints as arguments, not proc numbers.
    the one exception is sys_fork(), which needs to know in which slot
    to put the child.
2006-03-03 10:00:02 +00:00
Philip Homburg
7034c0795d Moved PCI driver to the ramdisk. 2006-02-15 14:21:56 +00:00
Philip Homburg
c3a88d15d8 Initial root filesystem is now on a ramdisk that is part of the image. 2006-02-15 11:18:21 +00:00
Ben Gras
88ba4b5268 added reenter check to lock_dequeue() to avoid unlocking of interrupts
via cause_sig() during an exception.

moved lock check configuration to <minix/sys_config.h> instead of
kernel/config.h, because the 'relocking' field in kinfo depends on it.

other prettification: common locking macro, whether lock timing is on or
not.
2006-02-10 16:53:51 +00:00
Ben Gras
0a02bfb056 Moved ipc debug out of conditional.
Gave pci server sys_getinfo privilege.
2006-02-06 15:16:14 +00:00
Philip Homburg
38a16399f8 Store resource lists for drivers. Limited checks to enforce those lists. 2006-01-27 13:21:12 +00:00
Philip Homburg
d9d970bdfa GET_IRQACTIDS, allow SELF in do_vm_map. 2006-01-12 14:38:51 +00:00
Philip Homburg
eec836014a PCI support in a separate driver 2005-12-02 14:45:38 +00:00
Ben Gras
87f2236ad2 load average measurement implementation, accessable through
getloadavg() system call in the library.
2005-11-14 15:50:46 +00:00
Philip Homburg
b85736bd7b Grant tty permission to use SYS_VM_MAP and SYS_IOPENABLE. 2005-11-09 15:48:41 +00:00
Philip Homburg
0b7fcbfd70 Only the memory driver should be allowed access to SYS_IOPENABLE 2005-11-04 17:06:49 +00:00
Philip Homburg
bfa0a555ad Removed debug printfs. 2005-10-24 13:48:50 +00:00
Ben Gras
85209d2e29 Test for SENDING else RECEIVING should be SENDING, then RECEIVING. 2005-10-21 18:13:10 +00:00
Ben Gras
81fa8fc3b8 Don't enqueue processes unless their flags have become 0 2005-10-21 17:35:39 +00:00
Jorrit Herder
78f20c3959 Rest ... 2005-10-21 13:46:47 +00:00
Ben Gras
cf16c73e62 . check for notify() from NONE (shouldn't happen any more)
. test for cleared process slots when checking processes on exiting
 . clear process slot first, then do cleanup on exiting
2005-10-20 20:59:02 +00:00
Jorrit Herder
86e3333454 New error codes for IPC errors.
Made VM code debug output disappear.
2005-10-20 20:25:32 +00:00
Ben Gras
2bf8bfe126 Turn IPC warning messages off by default
(because inet deadlocks are normal and will confuse our users).
2005-10-18 16:13:12 +00:00
Ben Gras
ea75918df1 printf() by kernel and servers now send messages to an array of processes,
OUTPUT_PROCS_ARRAY in <minix/config.h>, in that order, terminated by NONE.
log no longer forwards messages to tty itself. This leads to less funny
loops and more robust debug-message handling. Also the list of
processes receiving messages can easily be changed around or disabled by
editing the array (e.g. disable it by changing the array to { NONE }.).
2005-10-18 10:34:54 +00:00
Ben Gras
61b6139752 Al's system -> kernel call change 2005-10-14 09:13:52 +00:00
Ben Gras
32514fb5f9 Al's system call -> kernel call renaming 2005-10-14 08:58:59 +00:00
Ben Gras
ee9b08e5c0 Comment fix about sys_abort() 2005-10-13 09:43:39 +00:00
Jorrit Herder
b16a88692a New deadlock check at proc.c.
New exit checks (stop IPC).
2005-10-12 15:08:23 +00:00
Ben Gras
cc3201bacd Al's cosmetic rearrangement 2005-10-09 19:58:25 +00:00
Ben Gras
ab1374a9cb Comment corrections from Al 2005-10-07 13:23:18 +00:00
Ben Gras
4fc5f85a88 Corrected correction of clock's 2005-10-06 10:21:24 +00:00
Ben Gras
293e1ea70d Missing comma 2005-10-06 09:39:36 +00:00
Ben Gras
b46a51cfd6 Semidefinitive copyright statement. 2005-10-06 09:38:55 +00:00
Jorrit Herder
32c05f45c6 Minor bug fixes in proc.c and utility.c;
Removed debug dumps on panic from main.c;
Return error on exit when other process does IPC to/from exiting process.
2005-10-05 09:51:50 +00:00
Ben Gras
71b6f31d4e Let TTY call SYS_ABORT 2005-10-05 08:45:55 +00:00
Ben Gras
afc6721239 Al's comment fixes 2005-10-05 08:21:35 +00:00
Ben Gras
7ca48023af Al's comment bug. 2005-10-04 08:29:44 +00:00
Ben Gras
e32131bb05 Fixed wrong comment. 2005-10-04 08:28:07 +00:00
Ben Gras
15c6f7182b Al's comment fixes 2005-10-02 19:02:05 +00:00
Philip Homburg
9bee3f4b08 IOPL, VM, and serial debug output (disabled). 2005-09-30 12:54:59 +00:00
Ben Gras
b2dd3ff593 New copyright statement. 2005-09-23 22:10:11 +00:00
Ben Gras
1d0852bcd4 Enforce system call bitmask 2005-09-20 12:24:19 +00:00
Ben Gras
5ae6f98dea Andy's formatting fixes. 2005-09-11 16:44:06 +00:00
Ben Gras
c655d8b3ae Added shutdown_started global variable. If it's set, we're in the
process of doing a shutdown.

Initial purpose is - suppress dead process diagnostic message.
2005-09-08 14:31:23 +00:00
Ben Gras
769d420b5d No backquotes. 2005-09-07 18:15:21 +00:00
Ben Gras
75781d7c7b 1-second-delayed-shutdown reinstated to fix shutdown mess; possible now due
to boot monitor cooperation.
2005-09-07 16:42:31 +00:00
Ben Gras
c79dfb2e41 No newline for this error (dead dest) 2005-09-07 11:20:53 +00:00
Ben Gras
911ff6a873 Formatting fixes for the book 2005-08-29 16:47:18 +00:00
Jorrit Herder
5cb414f4d5 Reverted PH copyright to 1987-2001. 2005-08-23 13:10:12 +00:00
Jorrit Herder
b4d7de6ee1 New makefile (src/tools/Makefile) logic:
- make fresh install: still builds new everything (libraries, services, image)
- make clean image: only builds new boot image (about 5 sec. now!)
2005-08-23 12:53:35 +00:00
Jorrit Herder
7bf400a709 *** empty log message *** 2005-08-23 11:31:32 +00:00
Jorrit Herder
10e4e98947 Renamed SM to RS (Reincarnation Server). 2005-08-23 11:28:16 +00:00
Jorrit Herder
5ecb45c346 Improved scheduling: new way to catch infinite loops. 2005-08-23 10:25:01 +00:00
Ben Gras
d11b2e4b8c Al's double-blank-line removal request 2005-08-22 15:23:47 +00:00
Jorrit Herder
872687ddfc Scheduling updates to the kernel. Sched() function now is single point for
policy. Actual policy not yet implemented.

PM calculates nice values for processes in boot image.

IS debug dumps improved (Shift+F1-F4).
2005-08-22 15:14:11 +00:00
Jorrit Herder
a01645b788 New scheduling code in kernel. Work in progress.
Round-robin within one priority queue works fine.
Ageing algorithm to be done.
2005-08-19 16:43:28 +00:00
Jorrit Herder
2a165d972e Moved "Changes" comments from system/do_....c to system.h.
All changes are now in a single header file.
2005-08-10 10:23:55 +00:00
Jorrit Herder
f83ae4b3d1 Minor beautification. 2005-08-10 09:51:29 +00:00
Ben Gras
bfb7608412 various small fixes.
. motd update (ast)
 . made /usr/local/man/man* and made them bin-owned (mtree)
   (to let bin install there)
 . made copyright notice in kernel 1987-2006 (ast)
 . added chown -R bin /usr/src so that bin can compile everything
2005-08-08 14:34:10 +00:00
Ben Gras
b293e689a9 . Allow drivers to to physcopy() (table.c)
. Also allow receive() to be done from kernel processes, not just
  sendrec(). This is because receive()s can't harm the kernel processes,
  but are done from the CLOCK task (without sendrec()).
2005-08-08 12:18:45 +00:00
Jorrit Herder
941b5ebd1c Fix to device table at FS.
BIOS and AT installed in /sbin.
Floppy boot fixed.
2005-08-05 18:57:20 +00:00
Jorrit Herder
1c570a7d93 Second try to fix tick delay problem ... 2005-08-05 17:02:37 +00:00
Jorrit Herder
e396496d8c Fixed small bug in alarm code.
Kernel timer count was not reset after expiry.
2005-08-05 16:46:27 +00:00
Jorrit Herder
b96c389e78 Various small cleanups and comments added. 2005-08-05 09:41:15 +00:00
Jorrit Herder
74711a3b14 Check if kernel calls is allowed (from process' call mask) added. Not yet
enforced. If a call is denied, this will be kprinted. Please report any such
errors, so that I can adjust the mask before returning errors instead of
warnings.

Wrote CMOS driver. All CMOS code from FS has been removed. Currently the
driver only supports get time calls. Set time is left out as an exercise
for the book readers ... startup scripts were updated because the CMOS driver
is needed early on. (IS got same treatment.) Don't forget to run MAKEDEV cmos
in /dev/, otherwise the driver cannot be loaded.
2005-08-04 19:23:03 +00:00
Jorrit Herder
e561081545 Miscellaneous clean ups and fixes to the kernel.
Support for FLOPPY in boot image. (Set controller=fd at boot monitor.)
Moved major device numbers to <minix/dmap.h> (maybe rename to dev.h?)
2005-08-04 09:26:36 +00:00
Jorrit Herder
89cf745fe2 Single boot driver loaded, while multiple can be included in the boot image.
The user needs to set label=... to choose the driver of his or her choice.
This driver will be mapped onto the controller that is set in controller=...

Minor cleanup of kernel source code (boot image table now is static).
2005-08-03 16:06:35 +00:00
Jorrit Herder
1ae4d41d0d Without /dev/boot ... 2005-08-03 14:17:28 +00:00
Jorrit Herder
375f6f8754 Miscellaneous cleanups. 2005-08-03 11:53:36 +00:00