Commit graph

92 commits

Author SHA1 Message Date
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
Jorrit Herder 1f450f4959 Test .. no update. 2005-08-03 08:15:36 +00:00
Jorrit Herder b69ca94efb Fixed 'bug' in log driver that caused kernel messages not to be displayed.
This was caused by a change in the shared driver code. Not log's fault.

Renamed #definitions of driver process numbers, e.g., TTY now is TTY_PROC_NR.
All known (special) processes now have consistent naming scheme. Kernel tasks
don't follow this scheme.
2005-08-03 08:14:08 +00:00
Jorrit Herder ab7c0a9926 Cleaned up table. Moved policies to table.
Small fixes to do_copy, do_privctl and do_fork.
2005-08-02 15:28:09 +00:00
Jorrit Herder 0946d128cd - Kernel call handlers cleaned up. More strict checking of input parameters.
- Moved generic_handler() from system.c to system/do_irqctl.c.
- Set privileges of system processes somewhat stricter.
2005-07-29 15:26:23 +00:00
Jorrit Herder d62e515660 Small update to SYS_IRQCTL -> setting an interrupt policy now allows the caller
to provide an index (0 .. 31) that is passed in the HARD_INT message when an
interrupt occurs. The NOTIFY_ARG field contains a bitmap with all indexes for
which an interrupt occured.
2005-07-29 12:44:42 +00:00
Jorrit Herder bd8762263a *** empty log message *** 2005-07-29 11:50:58 +00:00
Philip Homburg 49c25df569 bios_wini driver 2005-07-29 10:21:04 +00:00
Jorrit Herder fe0dcb5c00 AT driver is not modified (debugging only);
TTY: select and revive with new notify and FS call back;
kernel: removed old notify code; removed ugly prepare_shutdown timer
kputc: don't send to FS if PRINTF_PROC fails
2005-07-27 14:32:16 +00:00
Ben Gras 31042a5a05 Added SENDREC_BUSY flag to indicate that process is doing sendrec() -
if so, alerts are not received before reply message.
2005-07-27 14:08:59 +00:00
Philip Homburg 93fc19de2c The priority of FS should be lower than that of PM to avoid race conditions
when processes are killed due to a signal.
2005-07-27 11:48:13 +00:00
Ben Gras dd1186d65d No RDY_Q_HEAD business.. 2005-07-27 07:01:46 +00:00
Jorrit Herder 30d95cad82 Removed debug output. 2005-07-26 14:54:49 +00:00
Jorrit Herder a41eb700e8 Minor fixes and improvements for sys_call(). 2005-07-26 13:51:21 +00:00
Jorrit Herder 8866b4d0ef Kernel changes:
- reinstalled priority changing, now in sched() and unready()
- reinstalled check on message buffer in sys_call()
- reinstalled check in send masks in sys_call()
- changed do_fork() to get new privilege structure for SYS_PROCs
- removed some processes from boot image---will be dynamically started later
2005-07-26 12:48:34 +00:00
Philip Homburg 153fdabb26 Fixed do_trace to properly return (status) information. 2005-07-25 12:15:05 +00:00
Jorrit Herder 954865e389 *** empty log message *** 2005-07-22 09:59:37 +00:00
Jorrit Herder 80816ab001 *** empty log message *** 2005-07-22 09:20:43 +00:00
Jorrit Herder f0594a9e6d - Fixed comments in various system call handlers. Work in progress on new
sys_privctl() call to dynamically start servers and drivers.

- Shutdown sequence slightly adjusted: called as watchdog timer to let the
  busy sys_abort() call from the PM return first.

- Changed umap_bios() to have more restrictive check: BIOS memory is now
  allowed in BIOS_MEM_BEGIN to END (interrupt vectors) and BASE_MEM_TOP
  to UPPER_MEM_END. Hopefully this keeps QEMU and Bochs happy.
2005-07-21 18:36:40 +00:00
Jorrit Herder c0718054e9 Various fixes and improvements.
- fixed bug that caused IDLE to panic (irq hook inconsistency);
- kprintf() now accepts multiple arguments; moved to utility.c;
- prepare_shutdown() signals system processes with SIGKSTOP;
- phys_fill() renamed to phys_memset(), argument order changed;
- kmemset() removed in favor of phys_kmemset();
- kstrncpy() removed in favor of phys_copy();
- katoi, kstrncmp replaced by normal library procedure again;
- rm_irq_handler() interface changed (simply pass hook pointer);
2005-07-20 15:25:38 +00:00
Ben Gras c24f72d433 Made phys_fill fill its 4-byte pattern any number of bytes (instead of
rounded down to a 4-byte multiple)

Fixed dependency omission
2005-07-19 16:00:25 +00:00
Jorrit Herder 1d7bdd4ab1 *** empty log message *** 2005-07-19 15:01:47 +00:00
Jorrit Herder b3a28466bb *** empty log message *** 2005-07-19 14:03:21 +00:00
Jorrit Herder 198c976f7e System processes can be signaled; signals are transformed in SYS_EVENT message
that passes signal map along. This mechanisms is also used for nonuser signals
like SIGKMESS, SIGKSTOP, SIGKSIG.

Revised comments of many system call handlers. Renamed setpriority to nice.
2005-07-19 12:21:36 +00:00
Philip Homburg 7d4e914618 Random number generator 2005-07-18 15:40:24 +00:00
Ben Gras 1f756d377a Made memset system call listen to character argument 2005-07-18 12:31:11 +00:00
Ben Gras 42e6d20afe Changed phys_zero to phys_fill, which accepts a 4-byte argument saying what
to fill with. Changed prototype and call to match.
2005-07-18 12:18:16 +00:00
Jorrit Herder 2c730e8a8c Renamed file. 2005-07-14 15:27:40 +00:00
Jorrit Herder 312c004519 *** empty log message *** 2005-07-14 15:26:26 +00:00
Jorrit Herder 42ab148155 Reorganized system call library; uses separate file per call now.
New configuration header file to include/ exclude functionality.
Extracted privileged features from struct proc and create new struct priv.
Renamed various system calls for readability.
2005-07-14 15:12:12 +00:00
Ben Gras f96645a4eb Fixed a bug in kstrncpy() that caused mayhem whenever the buffer to be
copied into was the same size as the source string - it will keep on
filling with zeroes forever. This was a signed/unsigned bug, fixed by
making the kstrncpy argument ssize_t instead of size_t. This bug was
triggered by Chris Young <teddga@earthlink.net>, by dazzling coincedence -
changing OS_VERSION into something with one more character (exactly the
same size as the buffer in the kinfo struct).

Also noticed that the kstrncpy() call didn't null-terminate the strings
if necessary, also fixed.
2005-07-13 14:46:11 +00:00
Ben Gras 42050e39f8 kernel and servers send diagnostic messages to IS; IS sends them to TTY
and the new log driver if enabled.

new usyslogd is started from /usr/etc/rc. New device created by
MAKEDEV.sh. /var/log created by etc/mtree/minix.tree (on root for
now). Made select() slightly more generic, with less code duplication.
2005-07-08 17:30:01 +00:00
Ben Gras 904cf1f84d A "fix" for bug no. 2 is to check if the process slot has disappeared.
Not a really good solution (as it might not catch situations in which this
is caused by another bug), but the forrest of checks necessary might be worse
than this quick fix - because when looking for the cause, I found some other
cases in which the PM would panic as well. See info in bug 2 for details.

Another fix is to delay notification of PM by SYSTASK of signals delivered
internally until after the reply (e.g. of exec()), because the reply would
be messed up otherwise (receiving the notify instead of reply). This caused
SIGTRAP not to be delivered properly with traced processes.
2005-07-04 15:20:46 +00:00
Ben Gras 3dcb2886ff get/setpriority() and fsync() system calls 2005-07-01 18:01:33 +00:00
Ben Gras 2ce80ece5c Fix to check for RDTSC instruction (above 486), and call another timing
function instead if RDTSC is unavailable. This makes minix run on 486
again :) (presumably lower as well).
2005-07-01 09:39:47 +00:00
Jorrit Herder c349ef942a Changes scheduling priorities for nice(). 2005-07-01 09:08:41 +00:00
Jorrit Herder bac6068857 Rewrite of process scheduling:
- current and maximum priority per process;
- quantum size and current ticks left per process;
- max number of full quantums in a row allow
  (otherwise current priority is decremented)
2005-06-30 15:55:19 +00:00
Ben Gras 6be8c4d8a3 Import of dpeth 3c501/3c509b/.. ethernet driver by
Giovanni Falzoni <fgalzoni@inwind.it>.
2005-06-29 10:16:46 +00:00
Jorrit Herder b25146d3de Removed SM server. 2005-06-27 08:11:46 +00:00
Jorrit Herder a408699ce0 Cleaned up process table structure: removed p_type, p_pendcount.
Removed stop sequence when MINIX is shut down.
Disabled send mask checks --- to be replaced by proper mechanism.
Fixed bug relating to 'shutdown -x'.
Simplified clock accounting of realtime.
Updated Makefiles for mkdept script.
2005-06-24 16:24:40 +00:00
Ben Gras 3bb4d191d7 Corrected buffer size calculation from MAX(bufsize,realsize)
to MIN(bufsize,realsize) while copying boot params.
2005-06-21 16:18:23 +00:00
Jorrit Herder 355a10864b Fixed various GCC compiler warnings for the kernel.
Only main() now gives a warning about the return type (GCC wants an int).
2005-06-21 10:47:46 +00:00
Ben Gras 3eeff022fb Added function read_cpu_flags() that returns current cpu flags as a
long.  This is used to check for interrupts being disabled at the time
of a lock() call, if enabled in config.h. The number of times this
happens is then counted in the kinfo structure. These events (recursive
lockings) lead to nasty race conditions.
2005-06-20 14:53:13 +00:00
Jorrit Herder ec24a0798c Updated function key mapping because of possible changes to NOTIFY.
The TTY driver now only notifies the IS server about function key event,
but does not tell which keys are pressed. The IS servers queries the TTY
driver to find out about this.
2005-06-20 14:23:31 +00:00
Jorrit Herder 403580e95b Removed unused code in proc.c. New message passing code with pointer pointers
is now in use. Rewrote ready() and unready() fuctions.
2005-06-20 11:26:48 +00:00
Ben Gras 3c7120d830 Changed arguments of timer library functions. 2005-06-17 13:36:01 +00:00
Jorrit Herder 7279bb68ef Applied MINIX 2.0.4 pathes provides by Al Woodhull. 2005-06-17 13:00:04 +00:00
Jorrit Herder ae018feae2 Removed unnecessary call to unlock() from exception(). 2005-06-17 09:50:12 +00:00