Commit graph

357 commits

Author SHA1 Message Date
Lionel Sambuc
886c867c38 Message type for SYS_EXEC
Change-Id: I349e28b8bb3705386f04e4860cffc6ed74a5532f
2014-07-28 17:05:49 +02:00
Lionel Sambuc
ec130c9b4b Message type for {PM,VFS,RS,DS}_GETSYSINFO
Change-Id: I64d89f8a1c4704d0d0f420eb1e434cc96fd6351a
2014-07-28 17:05:45 +02:00
Lionel Sambuc
948a5389f9 Message type for SVRCTL
Change-Id: Ibdb9edb9878e06cf2a641ffc3975f878a6e41dfb
2014-07-28 17:05:45 +02:00
Lionel Sambuc
6c313721d3 Message type for {PM,VFS,VM}_GETRUSAGE
Change-Id: I793d2e9fa8eb0562a46ccbd81aae3dbb517671cc
2014-07-28 17:05:44 +02:00
Lionel Sambuc
c6db5a91e7 Message type for SCHEDULING_SET_NICE
Change-Id: I4f8450b0de235627383035653ec58761fc7e3985
2014-07-28 17:05:43 +02:00
Lionel Sambuc
b90d99dab3 Message type for PM_{KILL,SIGACTION}
Change-Id: I7fac9a894e319671e12bfa7430984ca1cf24da33
2014-07-28 17:05:42 +02:00
Lionel Sambuc
dbfa59164b Message type for PM_SRV_KILL
Change-Id: I2d74b68db2d006dd375732a7932f20c2cf6a342a
2014-07-28 17:05:42 +02:00
Lionel Sambuc
9a4c1520cf Message type for PM_SIG{RETURN,SUSPEND,PROCMASK}
Change-Id: Id20352db47892eb6b870ea64ba52b3b1a293cbaa
2014-07-28 17:05:42 +02:00
Lionel Sambuc
6495d409d6 Message type for PM_EXIT
Change-Id: Ie78768d95358a701268129587074a48493cf5bbc
2014-07-28 17:05:42 +02:00
Lionel Sambuc
048d0f0d62 Message type for PM_EXEC
Change-Id: I6738716ba835d6196519056bb77afa8ec99f122a
2014-07-28 17:05:38 +02:00
Lionel Sambuc
e1986cd160 Message type for PM_MCONTEXT
Change-Id: I4ab9fc23ce8d78e03582580feba5ba96541f0f7e
2014-07-28 17:05:37 +02:00
Lionel Sambuc
ca31c1caae Message type for PM_GETSID
Change-Id: Ife3f9f6a7b6190baca6f379f7d3c36388baf6904
2014-07-28 17:05:37 +02:00
Lionel Sambuc
f63d2f0eaf Message type for PM_GETPID
Change-Id: Ib3ff13ad9c9e30bde08d4cacb6905955ace73924
2014-07-28 17:05:37 +02:00
Lionel Sambuc
cc852e7783 Message type for PM_SET{,E}GID
Change-Id: I489d9290553b28361344e0cfd59c31e7e672c22c
2014-07-28 17:05:37 +02:00
Lionel Sambuc
a6c5528e96 Message type for PM_SET{,E}UID
Change-Id: I5421646713e74562400e705b4a0f8b99f1325d64
2014-07-28 17:05:37 +02:00
Lionel Sambuc
b9939b3ed8 Message type for PM_GETGID
Change-Id: If3f788b0ad5a7389a62ecec3da78d6d71090f9a8
2014-07-28 17:05:37 +02:00
Lionel Sambuc
ba70f58845 Message type for PM_GETUID
Change-Id: I9a04f5a8b0e9099e0df543bcf76b2610a8803b9a
2014-07-28 17:05:36 +02:00
Lionel Sambuc
70a744da37 Message type for PM_REBOOT
Change-Id: I8de1b0de1a4c79f60a7df4720943ed9d0a19725c
2014-07-28 17:05:36 +02:00
Lionel Sambuc
c3629bba0b Message type for PM_GROUPS
Change-Id: I9e3b784143dd0294a8aad27e3cc588e5b57dabfc
2014-07-28 17:05:36 +02:00
Lionel Sambuc
865f761364 Message type for PM_{S,G}ET_PRIORITY
Change-Id: I3cf77f786751ca7e5a8cd13b8716b228d0fbf7fe
2014-07-28 17:05:36 +02:00
Lionel Sambuc
594521214a Message type for PM_SRV_FORK
Change-Id: I0e112da380805d40901a4041fd82da6e842e1f9b
2014-07-28 17:05:36 +02:00
Lionel Sambuc
7fb63c6182 Message type for PM_EXEC_RESTART
Change-Id: I0b7abd7b20a56a7982bccd0f677c1cf9d6bf7d3b
2014-07-28 17:05:36 +02:00
Lionel Sambuc
aeedd5c718 Message type for PM_EXEC_NEW
Change-Id: Idff5dc394d8daf4cb0c40d65cfdf2d54c2f9acaa
2014-07-28 17:05:36 +02:00
Lionel Sambuc
a297e52a32 Message type for PM_SYSUNAME
Change-Id: I58bd2987393ea56e1886fbce70b4b2c26af4ef2b
2014-07-28 17:05:35 +02:00
Lionel Sambuc
345b3b5114 Message type for PM_PTRACE
Change-Id: I19bbd5faa5c7511cda0239109b2ac55869c47b96
2014-07-28 17:05:35 +02:00
Lionel Sambuc
a5ed845b20 Message type for PM_ITIMER
Change-Id: I191ba9630028d9822f6a2fd4d7d3f461eb4d1493
2014-07-28 17:05:35 +02:00
Lionel Sambuc
1ae60bd2e8 Message type for PM_ time-related calls
- Message type for PM_CLOCK_SETTIME, PM_CLOCK_GETTIME,
   PM_CLOCK_GETRES, PM_GETTIMEOFDAY, PM_SETTIME.

 - Small adaptation, message only transfert sub-second time in
   nanoseconds, instead of both nano- and micro-seconds. Conversion
   is done in userland, as required.

Change-Id: Ie4a6e0c457cc12626e85d2102c086a95311cf3e7
2014-07-28 17:05:35 +02:00
Lionel Sambuc
ee2f1ee4cd Message type for PM_WAITPID
Change-Id: Ic2637a30418b9c780504f21a93ee80cef09ee1f2
2014-07-28 17:05:35 +02:00
Lionel Sambuc
de7aa3340b Message type for PM_GETEPINFO
Change-Id: I275f5c50d433fa400c5eddbc85dd3df8eb5dcb90
2014-07-28 17:05:35 +02:00
Lionel Sambuc
a1c31f335c Message type for PM_GETPROCNR
Change-Id: I4fcd682f78255afc1fdc0160fb6f1a3d2fe05d2e
2014-07-28 17:05:34 +02:00
Ben Gras
565f13088f make vfs & filesystems use failable copying
Change the kernel to add features to vircopy and safecopies so that
transparent copy fixing won't happen to avoid deadlocks, and such copies
fail with EFAULT.

Transparently making copying work from filesystems (as normally done by
the kernel & VM when copying fails because of missing/readonly memory)
is problematic as it can happen that, for file-mapped ranges, that that
same filesystem that is blocked on the copy request is needed to satisfy
the memory range, leading to deadlock. Dito for VFS itself, if done with
a blocking call.

This change makes the copying done from a filesystem fail in such cases
with EFAULT by VFS adding the CPF_TRY flag to the grants. If a FS call
fails with EFAULT, VFS will then request the range to be made available
to VM after the FS is unblocked, allowing it to be used to satisfy the
range if need be in another VFS thread.

Similarly, for datacopies that VFS itself does, it uses the failable
vircopy variant and callers use a wrapper that talk to VM if necessary
to get the copy to work.

	. kernel: add CPF_TRY flag to safecopies
	. kernel: only request writable ranges to VM for the
	  target buffer when copying fails
	. do copying in VFS TRY-first
	. some fixes in VM to build SANITYCHECK mode
	. add regression test for the cases where
	  - a FS system call needs memory mapped in a process that the
	    FS itself must map.
	  - such a range covers more than one file-mapped region.
	. add 'try' mode to vircopy, physcopy
	. add flags field to copy kernel call messages
	. if CP_FLAG_TRY is set, do not transparently try
	  to fix memory ranges
	. for use by VFS when accessing user buffers to avoid
	  deadlock
	. remove some obsolete backwards compatability assignments
        . VFS: let thread scheduling work for VM requests too
          Allows VFS to make calls to VM while suspending and resuming
          the currently running thread. Does currently not work for the
          main thread.
        . VM: add fix memory range call for use by VFS

Change-Id: I295794269cea51a3163519a9cfe5901301d90b32
2014-07-28 17:05:14 +02:00
Lionel Sambuc
175d3e7eae Changing the message union to anonymous.
This allows us to write things like this:
  message m;
  m.m_notify.interrupts = new_value;

or
  message *mp;
  mp->m_notify.interrupts = new_value;

The shorthands macro have been adapted for the new scheme, and will be
kept as long as we have generic messages being used.

Change-Id: Icfd02b5f126892b1d5d2cebe8c8fb02b180000f7
2014-03-03 20:46:47 +01:00
Lionel Sambuc
4a0199d66d PM_TIME_SEC into 64bit
Change-Id: I609ee8cac7aae8af2c0c0381710433a5df0caebd
2014-03-03 20:45:28 +01:00
Lionel Sambuc
55d9e9954b Extending time_t to 64bits.
Change-Id: Ia96b8bfba19cb8179a0237a7d2122d415c24d73f
2014-03-03 20:45:28 +01:00
Ben Gras
256829c7e8 <sys/wait.h>
Change-Id: I24605df209d012e99333065428a3ed2752799321
2014-03-02 12:28:32 +01:00
Ben Gras
8ccb12bb5a use netbsd <sys/signal.h> and sigset_t
. create signals-related struct message type to store sigset_t
	  directly
	. create notify-specific message types, so the generic NOTIFY_ARG
	  doesn't exist anymore
	. various related test expansions, improvements, fixes
	. add a few error-checks to sigismember() calls
	. rename kernel call specific signals fields to SYS_*

Change-Id: I53c18999b5eaf0cfa0cb25f5330bee9e7ad2b478
2014-03-02 12:28:31 +01:00
Ben Gras
7120f34ec1 drop <minix/termios.h>, use clean <sys/termios.h>
. also implement some netbsd-style tty ioctls
	. also implement SIGINFO
	. also import netbsd stty
	. rename keymap minix CMIN (for ctrl+minus on numeric keypad)
	  to CNMIN; to keep unchanged control character default CMIN in
	  new <sys/ttydefaults.h>
	. convert CS[5678] logic in rs232 driver to explicit setting of LC
	  bits

Change-Id: I9b7d2963fe9aec00fb6e7535ef565b3191fc1c1d
2014-03-02 12:28:20 +01:00
Ben Gras
a06e2ab395 big <utmp.h>-inspired netbsd switch
import/switch of:
init, getty, reboot, halt, shutdown, wall, last

changes:
	. change reboot() call to netbsd prototype and args
	. allows pristine <utmp.h>
	. use clean <sys/reboot.h> instead of <minix/reboot.h>
	. implement TIOCSCTTY for use by getty so getty can get
	  controlling terminal from init's child(ren)
	. allow NULL envp for exec

Change-Id: I5ca02cb4230857140c08794bbfeba7df982c58a3
2014-03-01 09:05:02 +01:00
Lionel Sambuc
c3fc9df84a Adding ipc_ prefix to ipc primitives
* Also change _orig to _intr for clarity
 * Cleaned up {IPC,KER}VEC
 * Renamed _minix_kernel_info_struct to get_minix_kerninfo
 * Merged _senda.S into _ipc.S
 * Moved into separate files get_minix_kerninfo and _do_kernel_call
 * Adapted do_kernel_call to follow same _ convention as ipc functions
 * Drop patches in libc/net/send.c and libc/include/namespace.h

Change-Id: If4ea21ecb65435170d7d87de6c826328e84c18d0
2014-03-01 09:05:01 +01:00
David van Moolenbroek
24ec0d73b5 Clean up interface to PM and VFS
- introduce new call numbers, names, and field aliases;
- initialize request messages to zero for all ABI calls;
- format callnr.h in the same way as com.h;
- redo call tables in both servers;
- remove param.h namespace pollution in the servers;
- make brk(2) go to VM directly, rather than through PM;
- remove obsolete BRK, UTIME, and WAIT calls;
- clean up path copying routine in VFS;
- move remaining system calls from libminlib to libc;
- correct some errno-related mistakes in libc routines.

Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
2014-03-01 09:05:01 +01:00
David van Moolenbroek
87c599da2d PM/VFS protocol: prefix with VFS_PM_
These calls are sent to VFS, and thus should be prefixed with VFS_.
Clean up the protocol and PM's main function a bit.

Since the protocol is substantially big and different from normal VFS
requests, this protocol retains its own numbering range for now.

Change-Id: Ia62104b5c5c929ed787144816d2e4cc70bed3b0b
2014-03-01 09:05:00 +01:00
David van Moolenbroek
44d3230e40 For common calls, give servers unique call numbers
The getsysinfo(2), getrusage(2), and svrctl(2) calls used the same
call number to different services. Since we want to give each service
its own call number ranges, this is no longer tenable. This patch
introduces per-service call numbers for these calls.

Note that the remainder of the COMMON_ range is left intact, as these
the remaining requests in it are processed by SEF and thus server-
agnostic. The range should really be prefixed with SEF_ now.

Change-Id: I80d728bbeb98227359c525494c433965b40fefc3
2014-03-01 09:05:00 +01:00
David van Moolenbroek
80bd109cd3 libsys: various updates
- move system calls for use by services from libminlib into libsys;
- move srv_fork(2) and srv_kill(2) from RS and into libsys;
- replace getprocnr(2) with sef_self(3);
- rename previous getnprocnr(2) to getprocnr(2);
- clean up getepinfo(2);
- change all libsys calls that used _syscall to use _taskcall, so as
  to avoid going through errno to pass errors; this is already how
  most calls work anyway, and many of the calls previously using
  _syscall were already assumed to return the actual error;
- initialize request messages to zero, for future compatibility
  (note that this does not include PCI calls, which are in need of a
  much bigger overhaul, nor kernel calls);
- clean up more of dead DS code as a side effect.

Change-Id: I8788f54c68598fcf58e23486e270c2d749780ebb
2014-03-01 09:05:00 +01:00
David van Moolenbroek
efd3487bc5 PM: send replies immediately
The original delayed reply functionality was there to support swapping
in processes as they are unblocked, but swap support is long gone.
These days, this code only incurs overhead and hides bugs.

Change-Id: I4aebcd80719daa1bec45ac91975ddc9a460d74d4
2014-03-01 09:05:00 +01:00
David van Moolenbroek
f310aefcbd PM: resolve fork/kill race condition
When a process forks, VFS is informed on behalf of the child. This is
correct, because otherwise signals to the new child could get lost.
However, that means that the parent is not blocked from being killed
by a signal while the child is blocked on this VFS call. As a result,
by the time that the VFS reply comes in, the parent may already be
dead, and the child may thus have been assigned a new parent: INIT.

Previously, PM would blindly reply to the parent when the VFS reply
for the fork came in. Thus, it could end up sending a reply to INIT,
even though INIT did not issue the fork(2) call. This could end up
satisfying a different call from INIT (typically waitpid(2)) and then
cause an error when that other call was complete.

It would be possible to set VFS_CALL on both forking parent and child.
This patch instead adds a flag (NEW_PARENT) to note that a process's
parent has changed during a VFS call.

Change-Id: Iad930b2e441db54fe6f7d2fd011f0f6a26e2923d
2014-03-01 09:04:59 +01:00
David van Moolenbroek
595d73a896 PM: rework signal handling
- introduce PROC_STOPPED flag, which tracks whether the process is
  stopped on PROC_STOP in the kernel, rather than implicitly deriving
  this from PM_SIG_PENDING;
- make the process resumption test based on current state rather than
  state transitions;
- add and clarify several flag checks in the signal handling code;
- add test79 to test signal handling robustness.

Change-Id: Ic8c7527095035b300b56f2ab1b9dd190bd4bf001
2014-03-01 09:04:59 +01:00
David van Moolenbroek
4d4e70daaa PM: remove obsolete ALARM, PAUSE, TIMES calls
NetBSD libc implements these as wrappers around setitimer(2),
sigsuspend(2), and getrusage(2), respectively.

Change-Id: I0c5e725b3e1316bddd3a3ff7ef65d57d30afd10d
2014-03-01 09:04:59 +01:00
David van Moolenbroek
f30a16b159 Remove support for MKTRACE, MKMCONTEXT, MKSTATECTL
Change-Id: Ib5fa53913ecb7b46d30d391dbdd3e8ef21eb2254
2014-03-01 09:04:59 +01:00
David van Moolenbroek
e5cc85fdc4 Extend dupfrom(2) into copyfd(2)
This single function allows copying file descriptors from and to
processes, and closing a previously copied remote file descriptor.
This function replaces the five FD-related UDS backcalls. While it
limits the total number of in-flight file descriptors to OPEN_MAX,
this change greatly improves crash recovery support of UDS, since all
in-flight file descriptors will be closed instead of keeping them
open indefinitely (causing VFS to crash on system shutdown). With the
new copyfd call, UDS becomes simpler, and the concept of filps is no
longer exposed outside of VFS.

This patch also moves the checkperms(2) stub into libminlib, thus
fully abstracting away message details of VFS communication from UDS.

Change-Id: Idd32ad390a566143c8ef66955e5ae2c221cff966
2014-03-01 09:04:58 +01:00
David van Moolenbroek
6b3f4dc157 Input infrastructure, INPUT server, PCKBD driver
This commit separates the low-level keyboard driver from TTY, putting
it in a separate driver (PCKBD). The commit also separates management
of raw input devices from TTY, and puts it in a separate server
(INPUT). All keyboard and mouse input from hardware is sent by drivers
to the INPUT server, which either sends it to a process that has
opened a raw input device, or otherwise forwards it to TTY for
standard processing.

Design by Dirk Vogt. Prototype by Uli Kastlunger.

Additional changes made to the prototype:

- the event communication is now based on USB HID codes; all input
  drivers have to use USB codes to describe events;
- all TTY keymaps have been converted to USB format, with the effect
  that a single keymap covers all keys; there is no (static) escaped
  keymap anymore;
- further keymap tweaks now allow remapping of literally all keys;
- input device renumbering and protocol rewrite;
- INPUT server rewrite, with added support for cancel and select;
- PCKBD reimplementation, including PC/AT-to-USB translation;
- support for manipulating keyboard LEDs has been added;
- keyboard and mouse multiplexer devices have been added to INPUT,
  primarily so that an X server need only open two devices;
- a new "libinputdriver" library abstracts away protocol details from
  input drivers, and should be used by all future input drivers;
- both INPUT and PCKBD can be restarted;
- TTY is now scheduled by KERNEL, so that it won't be punished for
  running a lot; without this, simply running "yes" on the console
  kills the system;
- the KIOCBELL IOCTL has been moved to /dev/console;
- support for the SCANCODES termios setting has been removed;
- obsolete keymap compression has been removed;
- the obsolete Olivetti M24 keymap has been removed.

Change-Id: I3a672fb8c4fd566734e4b46d3994b4b7fc96d578
2014-03-01 09:04:55 +01:00