Official MINIX sources - Automatically replicated from gerrit.minix3.org
a037a70169
Squashed commit of the following:
commit 7414eb808dfbce800e2dfaa3ca7f5474ba2d3684
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Sep 21 17:35:15 2013 +0200
Take LOG out of the boot image
Change-Id: Id2629776b53aae46629b04a42c15cbbacac9b949
commit aa33a6af33169916d081f27e22fb7ca458e92022
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Sep 21 15:03:20 2013 +0200
Kernel: make SIGKMESS target process list dynamic
The set of processes to which a SIGKMESS signal is sent whenever new
diagnostics messages are added to the kernel's message buffer, is now
no longer hardcoded. Instead, processes can (un)register themselves
to receive such notifications, by means of sys_diagctl().
Change-Id: I9d6ac006a5d9bbfad2757587a068fc1ec3cc083e
commit 4991d187e7efcf6348fa761c45414938c99bf048
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Sep 21 00:58:46 2013 +0200
Rename SYSCTL kernel call to DIAGCTL
Change-Id: I1b17373f01808d887dcbeab493838946fbef4ef6
commit 4ac2419358f96fbafc6fdc2df14c716c232d830f
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 20:13:59 2013 +0200
Prevent Jenkins from breaking on old df(1)
Change-Id: Ie8e1758bd9de4d5c95c597302f80d568058fbb68
commit 9b17c22cf13b68bf063024be1de56813ea29940b
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 14:09:47 2013 +0200
Add testvnd.sh test script
As part of this, change the "run" script to allow certain scripts to
be run as root only.
Change-Id: I846e41037f9d4f6c7fc0b5ea8250303a7bd72f5d
commit 8cde906ba03b1e9aaf2ebb1fdd990452e3d3c016
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 14:06:46 2013 +0200
Import NetBSD vndconfig(8)
The tool has been changed heavily to match our VND driver model.
NetBSD is in the process of renaming it from vnconfig(8) to
vndconfig(8). To keep things in sync, we have to play along.
Change-Id: Ie86df184f03ab00573ea76b43c9caa0412e8321d
commit 0088920e85160ebe6f04eb6913a629a2f5c9a582
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 14:02:17 2013 +0200
Add VND driver, providing loopback devices
Change-Id: I40fa695e28c67477a75383e6f1550e451afcab41
commit 0998c7cbcc8eb934f28830f3f5ba2e312c740ae9
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 13:55:15 2013 +0200
VFS: add dupfrom(2) call
This call copies a file descriptor from a remote process into the
calling process. The call is for the VND driver only, and in the
future, ACLs will prevent any other process from using this call.
Change-Id: Ib16fdd1f1a12cb38a70d7e441dad91bc86898f6d
commit ca15ee79df5cc00b93464f83e823a02374dcf609
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 11:46:08 2013 +0200
tests: do not skip installed shell tests
When installed, the test scripts lose their ".sh" suffix, causing them
to be skipped by the "run" script. With this patch, the tests are no
longer specified with ".sh" suffix in the run script, and the suffix
is added automatically as necessary.
Change-Id: I0b72312e79992b9818559c6546a0e52cd95184c2
commit a1b6eb025e61d23c39c7dfa07281bf8a52256648
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 13:41:56 2013 +0200
blocktest: prepare to be run as part of tests
- fail SEF initialization if any of the subtests failed, so that the
party invoking the "service up" can tell whether the test succeeded;
- add "nocontig" option, because VM isn't particularly good at
allocating contiguous memory;
- add "silent" option, because it floods the console otherwise;
- allow the device size to be smaller than the maximum transfer size;
- install files to installed test directory.
Change-Id: I45c818f817c11d90c5f94ae26a2fc49e36e6761e
commit 27e85d168b5b0de4bd5dad71110a28ab7de1c506
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 18 13:38:36 2013 +0200
Enable devname(3)
There is no support for a device name database yet, so this call is
expected to be fairly slow.
Change-Id: I73aa5f267e2b6921b7d3bbdcc4beac463931132c
commit 9db9e3e97cd10f114f3b25e2f9f192023fee409d
Author: David van Moolenbroek <david@minix3.org>
Date: Sun Sep 15 13:09:00 2013 +0200
libbdev: be less noisy about clean driver restarts
Change-Id: Ie02a459c9b544d361ab00bac431ef99de53b0c5f
commit 967b189e814cdd02d253d7c877bc4dbd7552f8b8
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Sep 14 14:43:53 2013 +0200
Straighten ioctl.h
- include all ioctl subheaders, properly listing all letters;
- change FBD's ioctl calls to use 'B' instead of 'F', in
preparation of the VND driver.
Change-Id: Ia718979568cc057f47cf505a89238d5b3b6695d4
commit 0ec080b7a65598d66e8ff01d559993c27e91c026
Author: David van Moolenbroek <david@minix3.org>
Date: Sun Sep 15 18:55:42 2013 +0200
VM: readd support for forgetting cached FS blocks
Not all services involved in block I/O go through VM to access the
blocks they need. As a result, the blocks in VM may become stale,
possibly causing corruption when the stale copy is restored by a
service that does go through VM later on. This patch restores support
for forgetting cached blocks that belong to a particular device, and
makes the relevant file systems use this functionality 1) when
requested by VFS through REQ_FLUSH, and 2) upon unmount.
Change-Id: I0758c5ed8fe4b5ba81d432595d2113175776aff8
commit b13082423d41cbb21f38348c96e5ada4c550b4bd
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 11 14:50:18 2013 +0200
filter: use libblockdriver
Change-Id: Ifbca2482e996ddca58036d45f557165e636fb3fa
commit 66d9724e08f8ec256f1fcfba65cb16eec9c62bfb
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 10 20:25:01 2013 +0200
Rewrite character driver protocol
As a side effect, remove the clone style, as the normal device style
supports device cloning now.
Change-Id: Ie82d1ef0385514a04a8faa139129a617895780b5
commit 0026fc3de77b5f4c70d72eb0320b0b92d9fe0066
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 10 16:06:37 2013 +0200
Remove support for reopening character devices
Previously, VFS would reopen a character device after a driver crash
if the associated file descriptor was opened with the O_REOPEN flag.
This patch removes support for this feature. The code was complex,
full of uncovered corner cases, and hard to test. Moreover, it did not
actually hide the crash from user applications: they would get an
error code to indicate that something went wrong, and have to decide
based on the nature of the underlying device how to continue.
- remove support for O_REOPEN, and make playwave(1) reopen its device;
- remove support for the DEV_REOPEN protocol message;
- remove all code in VFS related to reopening character devices;
- no longer change VFS filp reference count and FD bitmap upon filp
invalidation; instead, make get_filp* fail all calls on invalidated
FDs except when obtained with the locktype VNODE_OPCL which is used
by close_fd only;
- remove the VFS fproc file descriptor bitmap entirely, returning to
the situation that a FD is in use if its slot points to a filp; use
FILP_CLOSED as single means of marking a filp as invalidated.
Change-Id: I34f6bc69a036b3a8fc667c1f80435ff3af56558f
commit 6eaaa958390eb80b81dafef2068378a5ce2e2946
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 10 12:19:08 2013 +0200
VFS: rework device code
- block the calling thread on character device close;
- fully separate block and character open/close routines;
- reuse generic open/close code for the cloning case;
- zero all messages to drivers before filling them;
- use appropriate types for major/minor device numbers.
Change-Id: Ia90e6fe5688f212f835c5ee1bfca831cb249cf51
commit 4ee8b6fab457a894c8e9c30310bff1ccc9f7d68b
Author: David van Moolenbroek <david@minix3.org>
Date: Mon Sep 9 00:04:12 2013 +0200
Make PFS backcalls regular VFS calls
- prefix them with VFS_ as they are going to VFS;
- give these calls normal call numbers;
- give them their own set of message field aliases;
- also make do_mapdriver a regular call.
Change-Id: I2140439f288b06d699a1f65438bd8306509b259e
commit 367106e9e89dbae83b3dc3f946518ed6c93e3c4d
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 11 12:48:10 2013 +0200
TTY: use libchardriver; clean up
- writing to a PTY master side blocks if there is not already a
blocked reader on the slave side, and select now reflects this;
- internally, TTY now uses a test based on "caller != NONE" rather
than "grant != GRANT_INVALID" to identify whether a call is
currently ongoing;
- "offset" fields have been removed as they equal the corresponding
"cum" fields;
- improved variable typing and function naming here and there;
- various other small fixes.
Change-Id: I6b51452888942e864b4e034e8c8490576184a23e
commit e90437f66a75169e30f3aab114de37659a238492
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 11 01:13:59 2013 +0200
VFS: select(2) fixes
- check each file descriptor's open access mode (filp_mode);
- treat an error returned by a character driver as a select error;
- check all filps in each set before finishing select;
- do not copy back file descriptor sets if an error occurred;
- remove the hardcoded list of supported character major devices,
since all drivers should now be capable of responding properly;
- add tests to test40 and fix its error count aggregation.
Change-Id: I57ef58d3afb82640fc50b59c859ee4b25f02db17
commit db849cabad84c98f5d37c79dab4f5ed2e4471d78
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 11 01:07:28 2013 +0200
Retire EBADIOCTL in favor of ENOTTY
Change-Id: I6bd0e301d21ab7f2336e350e7e6e15d238c2c93d
commit 8ab3ef8007f241dff9fbdabc47b4d4da7faf8d8e
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 4 15:42:36 2013 +0000
libnetsock: use libchardriver
Change-Id: Ia5b780cad0b0c636db9bd866c7223da0d38ef6ea
commit 1c1d697cb2bdcb8dd456b0dee757ec09032e689c
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 11 00:50:36 2013 +0200
LWIP: move chardev message parsing into libnetsock
Change-Id: Ie23fd003c9fa35811548f388c8e9b55e8d9de8d7
commit bbbeccd4fa5b2f0ab9c670bb6165eddfe7c95988
Author: David van Moolenbroek <david@minix3.org>
Date: Mon Sep 9 14:53:28 2013 +0000
INET: use libchardriver
Change-Id: Icf8a1a5769ce0aede1cc28da99b9daf7d328182c
commit 1db6dc9bc7352c87dbbdfc2a6b235572fc456b86
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 3 02:00:20 2013 +0200
PFS: use libchardriver; clean up
- simplify and repair UDS request handling state machine;
- simplify interface used between internal modules;
- implement missing support for nonblocking I/O;
- fix select implementation;
- clean up global variables.
Change-Id: Ia82c5c6f05cc3f0a498efc9a26de14b1cde6eace
commit 1dd909f41c50f34f8d892fb2624a635bca39e983
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 3 01:59:20 2013 +0200
libaudiodriver: use libchardriver
Change-Id: I299d58d110ad14b69076276ba46c4325875c34ca
commit c0047f6a442a12c13f439969eca425c1bc4c2997
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 3 01:57:41 2013 +0200
printer: use libchardriver
Change-Id: Ifa3cabeada74c32df2613b8279c00f86e831c775
commit 35539543724128287f42425ab053deffb97ab78e
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 3 01:49:38 2013 +0200
libchardriver: full API rewrite
The new API now covers the entire character driver protocol, while
hiding all the message details. It should therefore be used by all
new character drivers. All existing drivers that already made use of
libchardriver have been changed to use the new API.
As one of the most important API changes, support for scatter and
gather transfers has been removed, as several key drivers already
did not support this, and it could be supported at the safecopy
level instead (for a future readv/writev).
Additional changes include:
- respond to block device open requests to avoid hanging VFS threads;
- add support for sef_cancel.
Change-Id: I1bab6c1cb66916c71b87aeb1db54a9bdf171fe6b
commit 521df439aaff6012c91b39281c2e0101c088c6c3
Author: David van Moolenbroek <david@minix3.org>
Date: Thu Aug 1 18:20:33 2013 +0200
blocktest: add support for no alignment
Some block drivers do not impose any alignment requirements, and this
patch allows such block drivers to pass the test set. As a side effect,
minimal support for min_write is added, but this part of blocktest is
in need of further improvement.
commit faa0389acea11c3aa4dd1ba1e5169385675442a5
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Apr 18 00:04:28 2012 +0200
libutil: let opendisk(3) try /dev
If a device node is given without path, and opening the node fails
initially, prepend "/dev/" to the node name and try opening again.
This is more in line with NetBSD behavior.
commit f34bb193985eed63221c90c3ca48766c160c4fb4
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 10 23:57:32 2013 +0200
Block drivers: make IOCTL request unsigned long
The block driver protocol and libblockdriver's bdr_ioctl hook are
changed, as well as the users of this hook. Other parts of the system
are expected to change accordingly eventually, since the ioctl(2)
prototype has been aligned with NetBSD's.
Change-Id: Ide46245b22cfa89ed267a38088fb0ab7696eba92
commit 2c70e7b0ee997654eb9ac48034325b29c3ab80ab
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Jul 27 00:49:49 2013 +0200
Block protocol: add user endpoint to IOCTL request
I/O control requests now come with the endpoint of the user process
that initiated the ioctl(2) call. It is stored in a new BDEV_USER
field, which is an alias for BDEV_FLAGS. The contents of this field
are to be used only in highly specific situations. It should be
preserved (not replaced!) by services that forward IOCTL requests,
and may be set to NONE for service-initiated IOCTL requests.
Change-Id: I68a01b9ce43eca00e61b985a9cf87f55ba683de4
commit 622e08ee49e14b54e064b85e912e83466f1cfe6f
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Jul 27 00:49:49 2013 +0200
Block protocol: use own [RW]_BIT definitions
The original R_BIT and W_BIT definitions have nothing to do with the
way these bits are used. Their distinct usage is more apparent when
they have different names.
Change-Id: Ia984457f900078b2e3502ceed565fead4e5bb965
commit 49ddd9530a0909f9eadc324616a16c11b7ff5e56
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Sep 10 23:35:15 2013 +0200
libblockdriver: expose BLOCKDRIVER_MAX_DEVICES
This constant determines the range of valid device_id_t values that
a block driver can return from the bdr_device hook: a value between
0 and (BLOCKDRIVER_MAX_DEVICES - 1) inclusive.
Change-Id: I80fac469e88ac13d4b869007e6f2c2f7569da433
commit 07482d855ca11c45235673309beb1e26a1f389a0
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Sep 11 13:33:00 2013 +0200
libblockdriver: various updates
- internal structure rearrangement;
- respond to char device open requests to avoid hanging VFS threads;
- make drivers use designated initializers;
- use devminor_t for all minor device numbers;
- change bdr_other hook to take ipc_status and return nothing;
- fix default geometry computation;
- add support for sef_cancel.
Change-Id: Ia063a136a3ddb2b78de36180feda870605753d70
commit f1a1ebb711626107014408a1b6561f3a67c0b557
Author: David van Moolenbroek <david@minix3.org>
Date: Sun Sep 1 14:34:17 2013 +0200
Block drivers: reply ENOTTY to unknown IOCTLs
Change-Id: Ie2e82d2491d546f4dd73b009100646e249a147b5
commit b3f90bcbd9bf3e205624eccdcbfda3b349469bc5
Author: David van Moolenbroek <david@minix3.org>
Date: Sun Jul 28 14:03:07 2013 +0200
Move SUB_PER_DRIVE definition into minix/drvlib.h
commit 478389a9ccc93974ad4158158e34b2d6d44441de
Author: David van Moolenbroek <david@minix3.org>
Date: Mon Sep 2 17:34:44 2013 +0200
VFS: update filp_pos on chardev I/O (workaround)
Previously, reading from or writing to a character device would not
update the file position on the corresponding filp object. Performing
this update correctly is not trivial: during and after the I/O
operation, the filp object must not be locked. Ideally, read/write
requests on a filp that is already involved in a read/write operation,
should be queued. For now, we optimistically update the file position
at the start of the I/O; this works under the assumptions listed in
the corresponding comment.
Change-Id: I172a61781850423709924390ae3df1f2d1f94707
commit 267c676b8867652666e74cfa4a6e21b7205e163c
Author: David van Moolenbroek <david@minix3.org>
Date: Mon Sep 2 13:45:02 2013 +0200
I2C: change BUSC_I2C_xxx to use own protocol
Previously it would use bits of the character driver protocol, which
will change heavily. In the new situation, the BUSC_I2C_xxx requests
use a protocol more in line with the PCI protocol, with the reply code
in m_type.
Change-Id: I51597b3f191078c8178ce17372de123031f7a4c4
commit ce5af0be47886f2b2aaf399cc93d5d1d839d180a
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Aug 31 16:13:37 2013 +0200
tests: add test77 for opening/closing PTYs
Change-Id: I30e3418f75137aa08037fa6581ff3d4cce32a114
commit 302841555f16077f611539e0df24f9f11f32803a
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Aug 31 16:08:25 2013 +0200
TTY: fix for PTY open/close logic
Opening and closing the master side of a pseudo terminal without
opening the slave side would result in the pseudo terminal becoming
permanently unavailable. In addition, reopening the slave side
would be possible but not allow for I/O. Finally, attempting to
open an in-use master would wipe its I/O state. These issues have
been resolved.
Change-Id: I9235e3d9aba321803f9280b86b6b5e3646ad5ef3
commit 3cd3c37232291e16cddb8fcfaf3f5da518874bb1
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 18:48:56 2013 +0200
tests: remove select subdirectory
This test set has been obsoleted by test40.
Change-Id: I55439152824906778ad07d409dfb327ac10bea70
commit d165339702810b72812d6e3c8730afe6f4da0579
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 18:43:23 2013 +0200
tests: add test76 for interrupting VFS operations
Change-Id: Ic436cac61de8c42e0c7ee2d442c647528654cde9
commit befe9861f6e4bad449e65f32692376fbd2eafebc
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Aug 28 13:08:16 2013 +0200
VFS: fix interruption of blocking pipe operations
POSIX states that when interrupted, partially successful pipe
operations should return the partial result rather than EINTR. VFS
previously wouldn't look at the partial result, and not clear it
either, which would result in a panic upon the next pipe operation.
Change-Id: Ia1eb72b4b77394051444e63a1390d49bb315eb04
commit 40bde438305a1fe9ae6285ef17703f3b2c119c3e
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 00:57:16 2013 +0200
libmthread: do not dump stack for free threads
Change-Id: Ic438a252f5bddaf1513f554c71173e6fffb0c674
commit 6687b172462e623c6fc76e785f20d15ccdb8bea0
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 14:00:50 2013 +0200
VFS: worker thread model overhaul
The main purpose of this patch is to fix handling of unpause calls
from PM while another call is ongoing. The solution to this problem
sparked a full revision of the threading model, consisting of a large
number of related changes:
- all active worker threads are now always associated with a process,
and every process has at most one active thread working for it;
- the process lock is always held by a process's worker thread;
- a process can now have both normal work and postponed PM work
associated to it;
- timer expiry and non-postponed PM work is done from the main thread;
- filp garbage collection is done from a thread associated with VFS;
- reboot calls from PM are now done from a thread associated with PM;
- the DS events handler is protected from starting multiple threads;
- support for a system worker thread has been removed;
- the deadlock recovery thread has been replaced by a parameter to the
worker_start() function; the number of worker threads has
consequently been increased by one;
- saving and restoring of global but per-thread variables is now
centralized in worker_suspend() and worker_resume(); err_code is now
saved and restored in all cases;
- the concept of jobs has been removed, and job_m_in now points to a
message stored in the worker thread structure instead;
- the PM lock has been removed;
- the separate exec lock has been replaced by a lock on the VM
process, which was already being locked for exec calls anyway;
- PM_UNPAUSE is now processed as a postponed PM request, from a thread
associated with the target process;
- the FP_DROP_WORK flag has been removed, since it is no longer more
than just an optimization and only applied to processes operating on
a pipe when getting killed;
- assignment to "fp" now takes place only when obtaining new work in
the main thread or a worker thread, when resuming execution of a
thread, and in the special case of exiting processes during reboot;
- there are no longer special cases where the yield() call is used to
force a thread to run.
Change-Id: I7a97b9b95c2450454a9b5318dfa0e6150d4e6858
commit 18adf3b3481cb93d48990ca6c27779d3354ed92e
Author: David van Moolenbroek <david@minix3.org>
Date: Wed Aug 28 15:58:30 2013 +0200
Retire ptrace(T_DUMPCORE), dumpcore(1), gcore(1)
The T_DUMPCORE implementation was not only broken - it would currently
produce a coredump of the tracer process rather than the traced
process - but also deeply flawed, and fixing it would require serious
alteration of PM's internal state machine. It should be possible to
implement the same functionality in userland, and that is now the
suggested way forward. For now, also remove the (identical) utilities
using T_DUMPCORE: dumpcore(1) and gcore(1).
Change-Id: I1d51be19c739362b8a5833de949b76382a1edbcc
commit c89c9bba1242ab64f00e33a7c103491d16a5dcc4
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 13:42:51 2013 +0200
VFS: process char driver replies from main thread
Previously, processing of some replies coming from character drivers
could block on locks, and therefore, such processing was done from
threads that were associated to the character driver process. The
hidden consequence of this was that if all threads were in use, VFS
could drop replies coming from the driver. This patch returns VFS to
a situation where the replies from character drivers are processed
instantly from the main thread, by removing the situations that may
cause VFS to block while handling those replies.
- change the locking model for select, so that it will never block
on any processing that happens after the select call has been set
up, in particular processing of character driver select replies;
- clearly mark all select routines that may never block;
- protect against race conditions in do_select as result of the
locking that still does happen there (as is required for pipes);
- also handle select timers from the main thread;
- move processing of character driver replies into device.c.
Change-Id: I4dc8e69f265cbd178de0fbf321d35f58f067cc57
commit 4bafbd90372f7e6e5e37a9961e2da732597a5462
Author: David van Moolenbroek <david@minix3.org>
Date: Sun Aug 25 00:26:38 2013 +0200
VFS: properly cancel select queries on unpause
Change-Id: I16e71db3f5c1bcc7ba6045bc9f02b13d71dc31eb
commit 6fbc144cbefcccbf2486d5d4077a90f9a73ba0d7
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 13:33:56 2013 +0200
VFS: remove support for sync char driver protocol
Change-Id: I57cc870a053b813b3a3fc45da46606ea84fe4cb1
commit 70d5e810f5b3b1d4be1069ef2b04c6ac3704c6ee
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 13:00:44 2013 +0200
VFS: remove FP_BLOCKED_ON_DOPEN
These days, DEV_OPEN calls to character drivers block the calling
thread until completion or failure, and thus never return SUSPEND to
the caller. The same already applied to BDEV_OPEN calls to block
drivers. It has thus become impossible for a process to enter a state
of being blocked on a device open call.
There is currently no support for restarting device open calls to
restarted character drivers. This support was present in the _DOPEN
logic, but was already no longer triggering. In the future, this case
should be handled by the thread performing the open request.
Change-Id: I6cc1e7b4c9ed116c6ce160b315e6e060124dce00
commit c3ddc6bbb23987af924ab4ae09bc2bbc12b29ca7
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 12:18:27 2013 +0200
PFS: remember request information for IOCTLs
Not doing so caused PFS to commit protocol violations by relying on
stale information when sending replies. This stale information always
happened to be correct, which is why the problem went unnoticed.
Change-Id: Ia42ca670718d6e731193cd2c34a3ff455f8a94d3
commit 61080f73325be2793e5175c17c9007ee0707b4ee
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 11:14:03 2013 +0200
Retire the synchronous character driver protocol
- change all sync char drivers into async drivers;
- retire support for the sync protocol in libchardev;
- remove async dev style, as this is now the default;
- remove dev_status from VFS;
- clean up now-unused protocol messages.
Change-Id: I6aacff712292f6b29f2ccd51bc1e7d7003723e87
commit 55e01bfda35e370a28841eed7017e091f7f55ba0
Author: David van Moolenbroek <david@minix3.org>
Date: Fri Aug 30 10:48:34 2013 +0200
Sync char protocol: add nonblocking transfer flag
The async char protocol already has this, so this patch closes the
gap between the two protocols a bit. Support for this flag has been
added to all sync char drivers that support CANCEL at all.
The LOG driver was already using the asynchronous protocol, but it
did not support the nonblocking transfer flag. This has been fixed
as well.
Change-Id: Ia55432c9f102765b59ad3feb45a8bd47a782c93f
commit fd34804e63e1ca6713c781f7437b4c60342d93e6
Author: David van Moolenbroek <david@minix3.org>
Date: Sat Aug 24 12:29:39 2013 +0200
VFS: set w_drv_sendrec only when needed
As with w_task, this ensures that the field remains cleared if it is
not used. Without this, worker_stop could mistakenly identify a thread
as talking to a device driver rather than a (crashed) file server.
Change-Id: I7d3ebed3efc3cd4f5c891f61c67a6463109b6376
commit ccbaf6bd8252ac5a2edeee4dd66fd1d43445a24e
Author: Thomas Veerman <thomas@minix3.org>
Date: Sat Aug 24 12:23:41 2013 +0200
VFS: set w_task only when needed
It was always set, but not always cleared, when talking to asynchronous
drivers. This could cause erratic behavior upon a driver crash.
Normally, a worker thread's w_task field is set when it's about to
communicate with a driver or FS. Then upon receiving a reply we can
do sanity checks (that the thread we want to wake up was actually
waiting for a reply). Also, when a driver/FS crashes, we can identify
which worker threads were talking to the crashed endpoint and handle
the error gracefully.
Asynchronous drivers are a bit special, though. In most cases, the
sender of the request is not interested in the reply (the sender was
suspended and only wants to know whether the request was successfully
caried out or not). However, the open request is special, as the reply
carries information needed by the sender. This is the only request
where a worker thread actually yields and waits for the result. This is
also the only case where we're interested in setting w_task for
asynchronous drivers.
Change-Id: Ia1ce2747937df376122b5e13b6a069de27fcc379
commit 80e6a4c121a64fc77cc5dfa0e33dfbd69ec2ea1a
Author: David van Moolenbroek <david@minix3.org>
Date: Mon Aug 19 20:34:15 2013 +0200
Import NetBSD df(1)
Change-Id: Ia60f8b23b961e4132efece1e7e38f0d63597c13b
commit 7e0d00d6cfcb3d4d0ab1dd3eeac556817735139e
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 01:33:43 2013 +0200
Enable getmntinfo(3)
Change-Id: Id9d11a67cdcad331a52030127f7c7ead3c847919
commit 8d9632ecfc3d83be4e1b4ee256ee0388a77748f8
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 00:49:07 2013 +0200
test55: add tests for getvfsstat(2)
Change-Id: Iad4567068a82bb0e780891a478ba5a06b63f1d48
commit 2e60389afacfce32940e330d28fffe5ed1a59eb3
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 01:28:23 2013 +0200
Implement support for [f]statvfs1(2)
The [f]statvfs(3) calls now use [f]statvfs1(2).
Change-Id: I56c92fe1c70670f476631c4a50e47351562712c6
commit be1d453fc179741aed20bd6122b6de8b15b43f1d
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 01:39:47 2013 +0200
Implement support for getvfsstat(2)
Change-Id: I4680c071b94fa855edfb6220b03cff6b20f3c1c9
commit 6ed7e451f149fa9e062ab66d4a976f3971dc08f1
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 01:37:18 2013 +0200
Redo mount(2)/umount(2) ABI
- pass in file system type through mount(2), and return this type in
statvfs structures as generated by [f]statvfs(2);
- align mount flags field with NetBSD's, splitting out service flags
which are not to be passed to VFS;
- remove limitation of mount ABI to 16-byte labels, so that labels
can be made larger in the future;
- introduce new m11 message union type for mount(2) as side effect.
Change-Id: Ia9ed4566d88af5239749c57274312be26bb61448
commit 314ccf892ad9db92b26ae8f6e0a8419f9f5a18b4
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 01:35:35 2013 +0200
Align "struct statvfs" with NetBSD
This is a requirement for implementing calls such as getmntinfo(3).
VFS is now responsible for filling in some of the structure's fields.
Change-Id: I457b463c70ea2f326b9c50de954a91cfefba0065
commit 4d748d6c8f5b4f296d6b25f042e3f312c142b3ff
Author: David van Moolenbroek <david@minix3.org>
Date: Tue Aug 20 00:55:49 2013 +0200
VFS/FS: remove fstatfs(2) and REQ_FSTATFS
The fstatfs(3) call now uses fstatvfs(2).
Change-Id: Ic6bbb040e1a8f01aaffe1a6a809dd4c7a2eae2f6
Change-Id: Ied93a28c893d639fb4d46eb6483b84219013e059
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| benchmarks | ||
| bin | ||
| commands | ||
| common | ||
| dist/nvi | ||
| distrib | ||
| docs | ||
| drivers | ||
| etc | ||
| external | ||
| gnu | ||
| include | ||
| kernel | ||
| lib | ||
| libexec | ||
| man | ||
| releasetools | ||
| sbin | ||
| servers | ||
| share | ||
| sys | ||
| test | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .gitignore | ||
| .gitreview | ||
| build.sh | ||
| LICENSE | ||
| Makefile | ||