Commit graph

60 commits

Author SHA1 Message Date
Tomas Hruby
21725c107d cd subdir && $(MAKE) targets -> $(MAKE) -C subdir targets
- first step towards parallel building
2010-06-22 12:03:09 +00:00
Arun Thomas
1b2c01db1b Makefile updates:
Turn on optimization
Remove some redundancy in FLAGS
2010-06-11 16:05:36 +00:00
Ben Gras
a98b9ca8dc tools: fix installing includes. 2010-06-07 10:10:27 +00:00
Arun Thomas
2fd1f18803 Release script: Remove .d/.depend files from CD 2010-06-01 14:44:36 +00:00
Arun Thomas
b48b037fbe Reorganize some directories
servers/hgfs/hgfs_server => servers/hgfs
servers/hgfs/libhgfs => lib/libhgfs
servers/rs/service => commands/service
drivers/memory/memory_driver => drivers/memory
drivers/memory/ramdisk => drivers/ramdisk
2010-05-26 22:49:57 +00:00
Tomas Hruby
b09bcf6779 Scheduling server (by Bjorn Swift)
In this second phase, scheduling is moved from PM to its own
scheduler (see r6557 for phase one). In the next phase we hope to a)
include useful information in the "out of quantum" message and b)
create some simple scheduling policy that makes use of that
information.

When the system starts up, PM will iterate over its process table and
ask SCHED to take over scheduling unprivileged processes. This is
done by sending a SCHEDULING_START message to SCHED. This message
includes the processes endpoint, the parent's endpoint and its nice
level. The scheduler adds this process to its schedproc table, issues
a schedctl, and returns its own endpoint to PM - as the endpoint of
the effective scheduler. When a process terminates, a SCHEDULING_STOP
message is sent to the scheduler.

The reason for this effective endpoint is for future compatibility.
Some day, we may have a scheduler that, instead of scheduling the
process itself, forwards the SCHEDULING_START message on to another
scheduler.

PM has information on who schedules whom. As such, scheduling
messages from user-land are sent through PM. An example is when
processes change their priority, using nice(). In that case, a
getsetpriority message is sent to PM, which then sends a
SCHEDULING_SET_NICE to the process's effective scheduler.

When a process is forked through PM, it inherits its parent's
scheduler, but is spawned with an empty quantum. As before, a request
to fork a process flows through VM before returning to PM, which then
wakes up the child process. This flow has been modified slightly so
that PM notifies the scheduler of the new process, before waking up
the child process. If the scheduler fails to take over scheduling,
the child process is torn down and the fork fails with an erroneous
value.

Process priority is entirely decided upon using nice levels. PM
stores a copy of each process's nice level and when a child is
forked, its parent's nice level is sent in the SCHEDULING_START
message. How this level is mapped to a priority queue is up to the
scheduler. It should be noted that the nice level is used to
determine the max_priority and the parent could have been in a lower
priority when it was spawned. To prevent a CPU intensive process from
hawking the CPU by continuously forking children that get scheduled
in the max_priority, the scheduler should determine in which queue
the parent is currently scheduled, and schedule the child in that
same queue.

Other fixes: The USER_Q in kernel/proc.h was incorrectly defined as
NR_SCHED_QUEUES/2. That results in a "off by one" error when
converting priority->nice->priority for nice=0. This also had the
side effect that if someone were to set the MAX_USER_Q to something
else than 0, then USER_Q would be off.
2010-05-18 13:39:04 +00:00
Cristiano Giuffrida
45db6482e8 Prioritized NOTIFY messages for reliable asynchonrous delivery of system events. 2010-03-22 23:44:55 +00:00
Arun Thomas
436d6012a3 Convert drivers/ and servers/ over to bsdmake
-Move libdriver to lib/
-Install all boot image services on filesystem to aid restartability
2010-03-22 21:25:22 +00:00
Arun Thomas
b706112487 Incorporate bsdmake into buildsystem and reorganize libs 2010-02-16 14:41:33 +00:00
Thomas Veerman
958b25be50 - Introduce support for sticky bit.
- Revise VFS-FS protocol and update VFS/MFS/ISOFS accordingly.
- Clean up MFS by removing old, dead code (backwards compatibility is broken by
  the new VFS-FS protocol, anyway) and rewrite other parts. Also, make sure all
  functions have proper banners and prototypes.
- VFS should always provide a (syntactically) valid path to the FS; no need for
  the FS to do sanity checks when leaving/entering mount points.
- Fix several bugs in MFS:
  - Several path lookup bugs in MFS.
  - A link can be too big for the path buffer.
  - A mountpoint can become inaccessible when the creation of a new inode
    fails, because the inode already exists and is a mountpoint.
- Introduce support for supplemental groups.
- Add test 46 to test supplemental group functionality (and removed obsolete
  suppl. tests from test 2).
- Clean up VFS (not everything is done yet).
- ISOFS now opens device read-only. This makes the -r flag in the mount command
  unnecessary (but will still report to be mounted read-write).
- Introduce PipeFS. PipeFS is a new FS that handles all anonymous and
  named pipes. However, named pipes still reside on the (M)FS, as they are part
  of the file system on disk. To make this work VFS now has a concept of
  'mapped' inodes, which causes read, write, truncate and stat requests to be
  redirected to the mapped FS, and all other requests to the original FS.
2009-12-20 20:27:14 +00:00
Tomas Hruby
ae75f9d4e5 Removal of the executable flag from files that cannot be executed
- 755 -> 644
2009-11-09 10:26:00 +00:00
David van Moolenbroek
b8b8f537bd IPC privileges fixes
Kernel:
o Remove s_ipc_sendrec, instead using s_ipc_to for all send primitives
o Centralize s_ipc_to bit manipulation,
  - disallowing assignment of bits pointing to unused priv structs;
  - preventing send-to-self by not setting bit for own priv struct;
  - preserving send mask matrix symmetry in all cases
o Add IPC send mask checks to SENDA, which were missing entirely somehow
o Slightly improve IPC stats accounting for SENDA
o Remove SYSTEM from user processes' send mask
o Half-fix the dependency between boot image order and process numbers,
  - correcting the table order of the boot processes;
  - documenting the order requirement needed for proper send masks;
  - warning at boot time if the order is violated

RS:
o Add support in /etc/drivers.conf for servers that talk to user processes,
  - disallowing IPC to user processes if no "ipc" field is present
  - adding a special "USER" label to explicitly allow IPC to user processes
o Always apply IPC masks when specified; remove -i flag from service(8)
o Use kernel send mask symmetry to delay adding IPC permissions for labels
  that do not exist yet, adding them to that label's process upon creation
o Add VM to ipc permissions list for rtl8139 and fxp in drivers.conf

Left to future fixes:
o Removal of the table order vs process numbers dependency altogether,
  possibly using per-process send list structures as used for SYSTEM calls
o Proper assignment of send masks to boot processes;
  some of the assigned (~0) masks are much wider than necessary
o Proper assignment of IPC send masks for many more servers in drivers.conf
o Removal of the debugging warning about the now legitimate case where RS's
  add_forward_ipc cannot find the IPC destination's label yet
2009-07-02 16:25:31 +00:00
Ben Gras
c078ec0331 Basic VM and other minor improvements.
Not complete, probably not fully debugged or optimized.
2008-11-19 12:26:10 +00:00
Ben Gras
9200a8a253 feature to display svn version on kernel boot 2007-04-12 15:13:10 +00:00
Ben Gras
fa0ba56bc9 Merge of VFS by Balasz Gerofi with Minix trunk. 2006-10-25 13:40:36 +00:00
Ben Gras
3172b4d0ad Patches by Jeff Bailey for posixifications. 2006-04-09 23:16:13 +00:00
Ben Gras
d9aad59630 bz2 2006-03-22 16:43:12 +00:00
Ben Gras
acdac1ec92 Don't choose FS by labels after all. 2006-03-13 08:47:05 +00:00
Ben Gras
6fe89cfbe8 Hack small and big fs into a single image. Must now set BIG or SMALL label. 2006-03-10 14:11:19 +00:00
Ben Gras
63e8494043 *** empty log message *** 2006-03-08 16:45:55 +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
Philip Homburg
222fddd73a Added PCI driver 2005-12-02 14:47:20 +00:00
Jorrit Herder
cd582e02be *** empty log message *** 2005-10-31 12:21:52 +00:00
Jorrit Herder
78f20c3959 Rest ... 2005-10-21 13:46:47 +00:00
Ben Gras
12898c03e4 *** empty log message *** 2005-10-21 11:40:24 +00:00
Jorrit Herder
1058d49249 Updated Makefile for DS server. 2005-10-20 20:32:57 +00:00
Ben Gras
cc736e1456 *** empty log message *** 2005-09-08 16:32:44 +00:00
Ben Gras
2cf2a6a5ea *** empty log message *** 2005-08-30 17:40:08 +00:00
Ben Gras
40fc02f6f7 *** empty log message *** 2005-08-30 17:39:14 +00:00
Ben Gras
61a7f45a99 Can make image_small too 2005-08-29 19:59:58 +00:00
Ben Gras
a72050e805 Re-fixed makefile for release 2005-08-24 17:09:29 +00:00
Ben Gras
8a149da394 . Makefile fix to make releasing work again (drivers weren't built)
. release -c feature: copy instead of cvs export
2005-08-24 16:49:09 +00:00
Ben Gras
3b5ae428de Makefile fix.. image up-to-dateness 2005-08-24 12:58:35 +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
10e4e98947 Renamed SM to RS (Reincarnation Server). 2005-08-23 11:28:16 +00:00
Ben Gras
4256d2d95b Added all target (for for /usr/src/Makefile master) 2005-08-22 12:38:22 +00:00
Ben Gras
7ec07219ed clean is cleaner 2005-08-12 12:48:24 +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
Jorrit Herder
1d60e866c3 Various updates to support dynamically starting drivers. 2005-08-02 15:32:12 +00:00
Philip Homburg
49c25df569 bios_wini driver 2005-07-29 10:21:04 +00:00
Jorrit Herder
2bb508a71c Removed implicit call to 'make depend' on 'make install' ... 2005-07-26 12:51:35 +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
Jorrit Herder
4fda4bbcb6 *** empty log message *** 2005-06-30 15:56:19 +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
fd3b5bf618 *** empty log message *** 2005-06-24 16:25:12 +00:00