Commit graph

3005 commits

Author SHA1 Message Date
David van Moolenbroek
49808dcf77 PM delay call infrastructure improvements
- allow PM to tell sys_runctl() whether to use delay call feature
- only use this feature in PM for delivering signals - not for exits
- do better error checking in PM on sys_runctl() calls
- rename SIGKREADY to SIGNDELAY
2009-10-01 10:36:09 +00:00
David van Moolenbroek
f11f597777 Make message type ranges in com.h (eventually) unique 2009-10-01 10:33:01 +00:00
David van Moolenbroek
a8ebc69c6e Fix erroneous times() call in udpstat/tcpstat.
Reported by John Peace, bug #312.
Also fix times(2) man page.
2009-10-01 10:31:29 +00:00
Tomas Hruby
6539c356c6 idle_task() declared 3x in kernel/proto.h. 2 declarations removed 2009-10-01 07:59:15 +00:00
Arun Thomas
8f4ca2dc92 Increase root partition size to 64 MB. 2009-09-30 14:11:58 +00:00
Ben Gras
e326a01446 - retrieve binary packages and sources from webserver to make a release, incrementally using wget
(so wget required)
 - don't build List file again, but use webserver List file and filter it
2009-09-30 13:11:22 +00:00
Arun Thomas
782a05b919 Bump release to 3.1.5 in issue.install 2009-09-30 13:00:38 +00:00
David van Moolenbroek
b423d7b477 Merge of David's ptrace branch. Summary:
o Support for ptrace T_ATTACH/T_DETACH and T_SYSCALL
o PM signal handling logic should now work properly, even with debuggers
  being present
o Asynchronous PM/VFS protocol, full IPC support for senda(), and
  AMF_NOREPLY senda() flag

DETAILS

Process stop and delay call handling of PM:
o Added sys_runctl() kernel call with sys_stop() and sys_resume()
  aliases, for PM to stop and resume a process
o Added exception for sending/syscall-traced processes to sys_runctl(),
  and matching SIGKREADY pseudo-signal to PM
o Fixed PM signal logic to deal with requests from a process after
  stopping it (so-called "delay calls"), using the SIGKREADY facility
o Fixed various PM panics due to race conditions with delay calls versus
  VFS calls
o Removed special PRIO_STOP priority value
o Added SYS_LOCK RTS kernel flag, to stop an individual process from
  running while modifying its process structure

Signal and debugger handling in PM:
o Fixed debugger signals being dropped if a second signal arrives when
  the debugger has not retrieved the first one
o Fixed debugger signals being sent to the debugger more than once
o Fixed debugger signals unpausing process in VFS; removed PM_UNPAUSE_TR
  protocol message
o Detached debugger signals from general signal logic and from being
  blocked on VFS calls, meaning that even VFS can now be traced
o Fixed debugger being unable to receive more than one pending signal in
  one process stop
o Fixed signal delivery being delayed needlessly when multiple signals
  are pending
o Fixed wait test for tracer, which was returning for children that were
  not waited for
o Removed second parallel pending call from PM to VFS for any process
o Fixed process becoming runnable between exec() and debugger trap
o Added support for notifying the debugger before the parent when a
  debugged child exits
o Fixed debugger death causing child to remain stopped forever
o Fixed consistently incorrect use of _NSIG

Extensions to ptrace():
o Added T_ATTACH and T_DETACH ptrace request, to attach and detach a
  debugger to and from a process
o Added T_SYSCALL ptrace request, to trace system calls
o Added T_SETOPT ptrace request, to set trace options
o Added TO_TRACEFORK trace option, to attach automatically to children
  of a traced process
o Added TO_ALTEXEC trace option, to send SIGSTOP instead of SIGTRAP upon
  a successful exec() of the tracee
o Extended T_GETUSER ptrace support to allow retrieving a process's priv
  structure
o Removed T_STOP ptrace request again, as it does not help implementing
  debuggers properly
o Added MINIX3-specific ptrace test (test42)
o Added proper manual page for ptrace(2)

Asynchronous PM/VFS interface:
o Fixed asynchronous messages not being checked when receive() is called
  with an endpoint other than ANY
o Added AMF_NOREPLY senda() flag, preventing such messages from
  satisfying the receive part of a sendrec()
o Added asynsend3() that takes optional flags; asynsend() is now a
  #define passing in 0 as third parameter
o Made PM/VFS protocol asynchronous; reintroduced tell_fs()
o Made PM_BASE request/reply number range unique
o Hacked in a horrible temporary workaround into RS to deal with newly
  revealed RS-PM-VFS race condition triangle until VFS is asynchronous

System signal handling:
o Fixed shutdown logic of device drivers; removed old SIGKSTOP signal
o Removed is-superuser check from PM's do_procstat() (aka getsigset())
o Added sigset macros to allow system processes to deal with the full
  signal set, rather than just the POSIX subset

Miscellaneous PM fixes:
o Split do_getset into do_get and do_set, merging common code and making
  structure clearer
o Fixed setpriority() being able to put to sleep processes using an
  invalid parameter, or revive zombie processes
o Made find_proc() global; removed obsolete proc_from_pid()
o Cleanup here and there

Also included:
o Fixed false-positive boot order kernel warning
o Removed last traces of old NOTIFY_FROM code

THINGS OF POSSIBLE INTEREST

o It should now be possible to run PM at any priority, even lower than
  user processes
o No assumptions are made about communication speed between PM and VFS,
  although communication must be FIFO
o A debugger will now receive incoming debuggee signals at kill time
  only; the process may not yet be fully stopped
o A first step has been made towards making the SYSTEM task preemptible
2009-09-30 09:57:22 +00:00
Ben Gras
8d9aa1fe4f throw out exec debugging message. 2009-09-30 08:36:13 +00:00
Ben Gras
2c56b7eebc there is no elvis. 2009-09-30 08:21:21 +00:00
Ben Gras
5f8a77061b audio package obsolete 2009-09-30 07:41:03 +00:00
Ben Gras
bcd7d04203 throw out FIXME reminders for release 2009-09-30 07:40:34 +00:00
Tomas Hruby
40b1d58077 Mostly a revert of r5306. com.h defines MAX_NR_TASKS value which replaces
NR_TASKS in the endpoint macros. MAX_NR_TASKS defines the maximal number of
kernel tasks. It is unlikely that we will ever need this many tasks as the goal
is not to have such a difference in the future. For now it makes possible to
remove the limiting NR_TASKS from the endpoint code.
2009-09-29 20:13:41 +00:00
Tomas Hruby
4dad30937b Removed macros that depend on NOTIFY_FROM from servers and drivers. They
determine the information defined by these macros from the m_source field of the
notify message.
2009-09-29 18:47:56 +00:00
Ben Gras
0e1fd9ea33 add SDL-1.2.13 2009-09-29 14:32:49 +00:00
Ben Gras
07a5bd0fe3 sort; throw out old packages; qemu in 2009-09-29 14:31:26 +00:00
Thomas Veerman
4b02d58176 Removed debug string 2009-09-29 13:23:04 +00:00
Ben Gras
699e4345ea revert mkfs change; might run out of inodes, but large number of inodes
makes mkfs not want to mkfs large filesystems.

find optimal formula (e.g. dynamic capping of no. of inodes) later.
2009-09-29 12:14:35 +00:00
Ben Gras
0e43db1375 disable address space randomisation feature in normal mode. 2009-09-29 12:10:30 +00:00
Tomas Hruby
256610f1d5 Macros in endpoint.h need to know about endpoint_t 2009-09-28 16:25:47 +00:00
Ben Gras
da67a3af00 disable 'clever' optimisation (workaround for vmware(?) problem) 2009-09-28 15:47:01 +00:00
Ben Gras
856ec906bd assert overammbitious. 2009-09-28 01:23:11 +00:00
Ben Gras
7a45f80bd5 threw out sanity checks before pagetable rewrites, triggering false
page table inconsistencies.

fix handle_memory logic. again.
2009-09-27 12:44:36 +00:00
Ben Gras
67602ce85e field for sanity check feature. 2009-09-27 12:37:37 +00:00
Ben Gras
5715637aa2 new prototypes. 2009-09-27 12:37:16 +00:00
Ben Gras
5cf59f9225 verbose printing and sanity checking functions. 2009-09-27 12:36:48 +00:00
Ben Gras
a02d9aae0a re-enable munmap(). 2009-09-25 19:01:27 +00:00
Ben Gras
e114ae8195 unnecessarily verbose message. 2009-09-25 17:59:38 +00:00
Ben Gras
e900735ddd old reminder 2009-09-25 17:58:23 +00:00
Ben Gras
cd3e83f849 get_randomness restored. 2009-09-25 17:57:24 +00:00
Ben Gras
e64e75dbc5 also don't let user process change ss segment selector when returning from
signal.
2009-09-25 17:44:26 +00:00
Ben Gras
aa1c90fdd7 correct logic error in region.c. 2009-09-25 17:39:39 +00:00
Ben Gras
1d0854e6db pre-APPROVEd (thanks Arun) sanity check function. 2009-09-25 11:12:06 +00:00
Tomas Hruby
97fe6a4ba5 Broken pipes fix
- fix for the broken partial pipes r/w operations
2009-09-24 16:03:25 +00:00
Tomas Hruby
ab6fc64984 ps fix
It removes the no more existing marcos (XPIPE XPOPEN XDOPEN XLOCK XSELECT) and
replaces them with the new ones from servers/vfs/const.h No more dependency on
NR_TASKS macro.
2009-09-24 16:00:59 +00:00
Ben Gras
f236d1dd9c throw out the debugging stuff again. 2009-09-23 16:26:05 +00:00
Ben Gras
af77f4e964 debug output in SANITYCHECKS mode 2009-09-23 16:02:27 +00:00
Ben Gras
f87a91ce95 missing level-- in out-of-memory case. 2009-09-23 15:19:36 +00:00
Ben Gras
74616a057b temporarily disable munmap() to mask memory problem. 2009-09-23 13:34:04 +00:00
Ben Gras
4c11d7e6f5 - simplify findhole() for use for 1 page only
- do WMF_FREE
 - added WMF_VERIFY to check page table contents
 - randomize address space usage in vm self
2009-09-23 13:33:01 +00:00
Ben Gras
9e53925504 save a few lines of unnecessary output. 2009-09-23 13:27:21 +00:00
Arun Thomas
b2e3153263 Release script: Increase root ramdisk to 8KB 2009-09-23 11:07:55 +00:00
Ben Gras
0d7b967413 give sys_fork() a real endpoint_t * arg 2009-09-23 10:48:57 +00:00
Erik van der Kouwe
789c8a6ee4 Fixed compilation errors in ps.c and rs/manager.c. The former was fixed by disabling code using no-longer-existant flags and the latter by removing the spurious parameter i from sys_privctl 2009-09-23 08:46:17 +00:00
Tomas Hruby
dd0ea3aba0 NOT_REACHABLE() removed until ack will be taught to handle macros as a grownup
compiler
2009-09-23 07:25:04 +00:00
Tomas Hruby
7c10365f1b removed idt_reload()
- not part of klib386 yet
2009-09-23 07:20:57 +00:00
Tomas Hruby
f53377ed67 Removed the broken PROC_EVENT and SYN_ALARM from VFS 2009-09-22 22:11:20 +00:00
Tomas Hruby
8590ac260d Removed dependency of vfs on NR_TASKS macro
- all macros in consts.h that depend on NR_TASKS replaced by a FP_BLOCKED_ON_*

- fp_suspended removed and replaced by fp_blocked_on. Testing whether a process
  is supended is qeual to testing whether fp_blocked_on is FP_BLOCKED_ON_NONE or
  not

- fp_task is valid only if fp_blocked_on == FP_BLOCKED_ON_OTHER

- no need of special values that do not colide with valid and special endpoints
  since they are not used as endpoints anymore

- suspend only takes FP_BLOCKED_ON_* values not endpoints anymore

- suspend(task) replaced by wait_for(task) which sets fp_task so we remember who
  are we waiting for and suspend sets fp_blocked_on to FP_BLOCKED_ON_OTHER to
  signal that we are waiting for some other process

- some functions should take endpoint_t instead of int, fixed
2009-09-22 21:48:26 +00:00
Tomas Hruby
48602fcfae NOT_REACHABLE macro
- marks code path that should be unreachable (never executed)

- if hit, panics and reports the problem

- the end of main() marked as such. The SMP changes need some magic with stack
  switching before the AP can be started as they need to run on the boot stack
  before figuring out what is their own stack. As main() uses the boot stack to,
  we need to switch to to the stack of BSP before executing the last part of
  main() which needs to be in a separate function so we can jump to it.
  Therefore restart() won't be the last call in main() which may be confusing.
  The macro can/should be used in other such places too.
2009-09-22 21:46:47 +00:00
Tomas Hruby
c0a1fd1292 Removed NR_TASKS from macros manipulating endpoint_t
- the magic numbers ANY, NONE and SELF are kept for the compatibility with the
  current userspace. It is OK as long as NR_PROCS is greater so they don't
  colide with other endpoints

- the 32 bit endpoint_t value is split in half, lower 16 bits for process slot
  number and upper half for generation number

- transition to a structured endpoint_t in the future possible
2009-09-22 21:45:26 +00:00