Commit graph

79 commits

Author SHA1 Message Date
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
Erik van der Kouwe
3615d93383 Handle SIGSTOP more consistently and according to POSIX rules; it can no longer be ignored 2009-09-13 12:24:23 +00:00
Erik van der Kouwe
83b84cbe64 Man page for new function nanosleep(3), updated man page for sleep(3) 2009-08-16 12:12:40 +00:00
David van Moolenbroek
247e1e8fa8 man page fix: sigaction.2 signals list 2009-08-15 23:27:32 +00:00
David van Moolenbroek
323f0abdd6 Support for setitimer(ITIMER_VIRTUAL/ITIMER_PROF). New test (41) for setitimer. 2009-08-15 21:37:26 +00:00
David van Moolenbroek
d82e260a90 Support for setitimer(ITIMER_REAL). 2009-08-15 16:09:32 +00:00
Thomas Veerman
c2ffe723d1 - Moved (u)mount prototypes from unistd.h to sys/mount.h.
- Prepared mount system call to accept multiple mount flags
   instead of just read_only (however, it remains backwards
   compatible).
 - Updated the man mount(2) to reflect new header file usage. 
 - Updated badblocks, newroot, mount, and umount commands to use the
   new header file.
2009-08-12 19:57:37 +00:00
David van Moolenbroek
aa84986819 more small man page fixes 2009-06-25 10:41:55 +00:00
David van Moolenbroek
be9606a4e0 random man page update: cut.1 2009-06-24 21:13:28 +00:00
David van Moolenbroek
3018cd023a random man page fix: cawf.1 2009-06-24 11:42:05 +00:00
David van Moolenbroek
66d1f1260c remove last traces of FSDEVMAP svrctl 2009-06-13 13:09:14 +00:00
David van Moolenbroek
24bb7fbb4c added poweroff(8) 2009-06-12 13:02:51 +00:00
Arun Thomas
86d89ed3f1 ls(1) manpage corrections
-Add missing '-n' option to synopsis.
-MINIX 3 does support symbolic links now.

Thanks to River Tarnell for the patch.
2009-05-30 11:01:17 +00:00
David van Moolenbroek
00a2463d71 update readlink(2) manpage accordingly 2009-05-20 11:49:10 +00:00
David van Moolenbroek
fe8c612aa4 support in 'mount' for specifying file system type and options 2009-05-13 15:39:44 +00:00
Ben Gras
02f047d008 lose -s flag for umount. 2009-04-27 14:23:57 +00:00
Ben Gras
cc7c561d41 obsolete manpages (these have become packages) 2007-04-24 13:25:57 +00:00
Ben Gras
f3f2e92191 move date(1) to minix manual page place. 2007-03-26 11:24:13 +00:00
Ben Gras
fedb5c0368 make way for new date(1). 2007-03-26 11:21:54 +00:00
Ben Gras
5596ab1ec7 Minor corrections by ASW. 2007-03-22 16:24:06 +00:00
Ben Gras
454bb40129 correct references to manpage section 9 to 1x. 2007-03-05 16:43:03 +00:00
Ben Gras
f8eb059bb9 move manpages in section 9 to new section 1x. 2007-03-05 16:36:40 +00:00
Ben Gras
5f46b37a3d Rename section 9 to section 1x 2007-03-05 16:32:30 +00:00
Ben Gras
77474b28e8 Typo reported by Al Woodhull. 2007-02-21 15:17:28 +00:00
Ben Gras
825f29fd89 TZ update for new US/Canadian DST rules, fixed by Al Woodhull. 2007-02-20 16:29:26 +00:00
David van Moolenbroek
d4e6fe3546 Setjmp/longjmp updates and cleanup. 2006-12-08 16:23:18 +00:00
Ben Gras
12eb228aae Typo reported by ville.solarius@gmail.com 2006-11-06 18:02:22 +00:00
Ben Gras
1250e94d56 New sed manpage 2006-11-02 16:51:04 +00:00
Ben Gras
7195fe3325 System statistical and call profiling
support by Rogier Meurs <rogier@meurs.org>.
2006-10-30 15:53:38 +00:00
Ben Gras
bf195531b3 new command 'dumpcore' that can write core files of running processes. 2006-08-15 15:59:38 +00:00
Ben Gras
4c7c64cd66 Clarify du units. 2006-08-04 13:26:05 +00:00
Ben Gras
53cbd9acbf Manpage bug fix reported by Matej Kosik. 2006-07-21 11:19:32 +00:00
Ben Gras
3ffa1684ae New option -E for ps that prints endpoint numbers instead of pids. 2006-06-23 11:59:20 +00:00
Ben Gras
ede3e5ab83 Al Woodhull's new manual pages 2006-06-19 14:51:41 +00:00
Ben Gras
244786ae34 Fix for service formatting bug reported by Jaap Weel <weel@ugcs.caltech.edu> 2006-05-08 22:04:05 +00:00
Ben Gras
461a4fafb1 Added fchmod() and fchown() 2006-04-18 11:26:04 +00:00
Ben Gras
ee2c14934a syslog related manpages 2006-04-03 14:59:52 +00:00
Ben Gras
26a59eea43 readlink(); check bounds
top: add 'system' cpu time to 'kernel', 'idle' and 'user'
2006-03-17 13:34:40 +00:00
Ben Gras
7fb338622b Let top distinguish kernel time, explain in manpage. 2006-03-17 10:04:14 +00:00
Ben Gras
96783ed1f7 readlink command implementation + manpage 2006-03-17 09:27:26 +00:00
Ben Gras
ce64a1d542 Readlink, symlink manpage; fix for lstat 2006-03-17 09:10:39 +00:00
Ben Gras
e1d412d71e Top manpage + comment in code 2006-03-17 07:54:55 +00:00
Ben Gras
db963438c6 *** empty log message *** 2006-02-13 13:10:53 +00:00
Ben Gras
f8e186e8b1 Added truncate/ftruncate manpage. 2006-02-13 12:53:50 +00:00
Ben Gras
a9dd9784d1 Added truncate(1) manpage; added comment about holes in du; removed
minix-vmd specificness of F_FREESP as minix now implements it too.
2006-01-11 17:18:53 +00:00
Ben Gras
348e18d474 Added del_route suggested by mij@bitchx.it. 2005-11-17 00:05:37 +00:00
Ben Gras
f08d6365be add_routes -> add_route in SEE ALSO 2005-11-16 23:52:56 +00:00
Ben Gras
2ea0f4491d '.' fix for troff 2005-11-14 16:21:33 +00:00
Ben Gras
aabef59faa getloadvg(3) manpage 2005-11-14 15:48:43 +00:00
Jorrit Herder
9333141704 New rescue functionality. 2005-10-21 13:28:26 +00:00