Commit graph

5030 commits

Author SHA1 Message Date
David van Moolenbroek
1817f7fc07 VFS: fix "process already free" panic on reboot
Reported by Claudiu Dan Gheorghe, debugged by Thomas and myself
2012-05-02 17:42:50 +02:00
David van Moolenbroek
f004a0a980 test43: fix dangling-symlink case 2012-05-02 17:39:58 +02:00
Ben Gras
543adbed3a libarchive import
. clean and nbsd_ports managed import
	. also makes it shared
2012-05-02 13:31:48 +02:00
Thomas Veerman
76092ddf33 libmthread: don't always verify library initialization
This can be turned back on when the library is compiled with
-DMTHREAD_STRICT (which enables more sanity checks). However,
always performing this check shows up in system profiling results.
2012-05-01 09:55:06 +00:00
Thomas Veerman
068d443d12 VFS: unlock vmnt when out of vnodes 2012-04-27 08:51:13 +00:00
Thomas Veerman
b6ff38065f VFS: release what can be released
Only attempt to release blocked processes that are blocked. There is
no use in trying to find more blocked processes than we know that are
blocked (on a pipe).
2012-04-27 08:51:02 +00:00
Thomas Veerman
7b81254069 VFS: simplify stat for pipes
According to POSIX the st_size field of struct stat is undefined for
fifos and anonymous pipes. Thus we can do anything we want. We save a
copy by not being accurate on pipe sizes.
2012-04-27 08:50:49 +00:00
Thomas Veerman
db8198d99d VFS: use S_IS* macros 2012-04-27 08:49:38 +00:00
Thomas Veerman
96bbc5da3e VFS: I_PIPE is redundant
Also, use S_IS* macros instead of manual comparison.
2012-04-27 08:49:38 +00:00
Ben Gras
755102d67f AT_SUN_EXECNAME support
. vfs: pass execname in aux vectors
	. ld.elf_so: use this to expand $ORIGIN
	. this requires the executable to reserve more
	  space at exec() calling time
2012-04-26 13:32:39 +02:00
Ben Gras
b41df2eb0d kernel: mon_return cleanup
cleanup of boot monitor related code.
2012-04-25 17:59:43 +02:00
Antoine Leca
c662389d25 Enable LZMA supprt with tar(1) 2012-04-25 17:52:33 +02:00
David van Moolenbroek
0c11190cdc MFS: reimplement block clean marking fix
MFS' get_block() must never return a newly acquired block buffer that
is marked dirty from previous use. This patch replaces git-dd59d50,
which assumed a working model where blocks for device NO_DEV would
never be dirty. For at least one scenario, that assumption does not
hold, triggering superblock overwrite warnings. In this patch, blocks
are explicitly marked as clean upon being repurposed. The working
model is now restored to be: the dirty state of a block is relevant
only when its associated device is not set to NO_DEV.
2012-04-20 17:40:47 +02:00
David van Moolenbroek
26f817243b VFS: reimplement truncate mtime/ctime fix
POSIX mandates that a file's modification and change time be left
untouched upon truncate/ftruncate iff the file size does not change.
However, an open(O_TRUNC) call must always update the modification and
change time of the file, even if it was already zero-sized. VFS uses
the file systems' truncate call to implement O_TRUNC. This patch
replaces git-255ae85, which did not take into account the open case.
The size check is now moved into VFS, so that individual file systems
need not check for this case anymore.
2012-04-20 11:35:59 +02:00
David van Moolenbroek
1e78879f1e run test fix, take two 2012-04-20 11:34:56 +02:00
Ben Gras
2720b68f1b daily cron: fix timestamp updating
. previously was not updated causing daily to be run on
	  every boot
2012-04-19 16:57:58 +02:00
Ben Gras
a149be43fc use linker to align fpu state save area 2012-04-19 15:06:47 +02:00
David van Moolenbroek
093c949274 procfs: fix rare panic in add_inode
Previously, procfs would consider all processes that have a non-free
kernel slot *or* an in-use PM slot. However, since AVFS, a non-free
kernel slot does not imply an in-use PM slot. As a result, procfs
may use PM slots that have a zero PID value. If two such entries are
present in the retrieved PM table, procfs would try to add two inodes
with the same name "0", triggering an assertion in vtreefs.

This patch makes procfs consider only the PM slot for (non-task)
processes.
2012-04-19 11:26:11 +02:00
Ben Gras
861bb4e571 update_bootcfg: fix: generate absolute paths 2012-04-18 16:30:06 +02:00
Ben Gras
ed21b54203 run test fix 2012-04-18 15:59:37 +02:00
Ben Gras
3945cfbfd3 block ioctls: pass request number 2012-04-18 11:01:15 +02:00
Ben Gras
b332803b6f release fixes
. make ramdisk buildable without ../etc having pwd.db
	. add cat to release bootstrap cmds
	. support running dynamically linked executables for
	  release bootstrap cmds
	. import netbsd chroot to help
2012-04-17 16:58:58 +02:00
Ben Gras
5086f1b2a1 test scripts fixes 2012-04-16 16:04:44 +02:00
Ben Gras
53f94f8ed4 dynamic executables on ramdisk support
See UPDATING about upgrading clang for dynamic linking.

	. allow executables on ramdisk to be dynamically linked; this means
	  putting a few required shared libraries and ld.elf_so on the ramdisk.
	. this makes the ramdisk (usage) smaller when they are dynamic, but
	  bigger when they're not.
	. also we can safely ditch newroot and call mount directly as that is
	  all newroot does.
	. create proto.common to share a bunch of entries between
	  small/nonsmall cases
2012-04-16 14:06:09 +02:00
Ben Gras
0c8e5ecc2e tests: link them dynamically by default
. so that functionality is tested
	. add test63 that actually tests dlopen(), dlsym(),
	  etc. functionality; only built if clang supports it
	. also test10 test to copy more of the executable
2012-04-16 05:21:21 +02:00
Ben Gras
4b999f1962 build shared versions of libraries
building defaults to off until clang is updated.

current clang does not handle -shared, necessary to change the ld
invocation to build shared libraries properly. a new clang should be
installed and MKPIC defaults to no unless the newer clang is detected.

changes:

	. mainly small imports of a Makefile or two and small fixes
	  (turning things back on that were turned off in Makefiles)
	. e.g.: dynamic librefuse now depends on dynamic
	  libpuffs, so libpuffs has to be built dynamically too
	  and a make dependency barrier is needed in lib/Makefile
	. all library objects now have a PIC (for .so) and non-PIC
	  version, so everything is built twice.
	. generate PIC versions of the compat (un-RENAMEd) jump files,
	  include function type annotation in generated assembly
	. build progs with -static by default for now
	. also build ld.elf_so
	. also import NetBSD ldd
2012-04-16 05:21:20 +02:00
Ben Gras
53002f6f6c recognize and execute dynamically linked executables
. generalize libexec slightly to get some more necessary information
	  from ELF files, e.g. the interpreter
	. execute dynamically linked executables when exec()ed by VFS
	. switch to netbsd variant of elf32.h exclusively, solves some
	  conflicting headers
2012-04-16 00:41:42 +00:00
Ben Gras
927b9ef243 kernel: align gdt and idt base addresses
patch my fdmanana:
As recommended by the Intel 64 and IA-32 Architectures Developer's
Manual Volume 3A, the GDT and IDT base addresses should be aligned on an
8 byte boundary to yield better processor performance.
2012-04-15 20:41:36 +02:00
Thomas Veerman
7daa6a6054 Provide boot option to boot into single user mode 2012-04-13 14:06:27 +00:00
Thomas Veerman
6659ae1fc3 Fix booting into single user mode
Due to a shift, mountfstab was unable to locate the fstab file and
mount other file systems causing a number of errors to be generated.
2012-04-13 13:52:48 +00:00
Thomas Veerman
d729ecb11b service: make clear who is printing the error 2012-04-13 13:51:56 +00:00
Thomas Veerman
26ec619a30 VFS: fix filp reuse race
Pipes consist of two filps (read filp and write filp) and a shared
vnode. When the writer leaves the filp reference count drops to
zero and subsequent find_filp()s should not find the filp when a
reader looks for it and the reader gets EOF. However, the pipe()
system call tries to find two filps, marks them in use, and only
after a successful node creation on PFS, overwrites the shared
vnode with the new vnode. Consequently, this leaves a small window
where a just closed 'pipe write filp' gets reused and marked as
present, before becoming the actual new 'pipe write filp' for a new
pipe. A reader for the old pipe will think a writer is present and
wait for that writer to write something or to leave; both actions
should revive the suspended reader. This will never happen and the
reader will be stuck forever.
2012-04-13 13:22:57 +00:00
Thomas Veerman
e292ba487e VFS: more three-level-lock sanity checking 2012-04-13 13:22:42 +00:00
Thomas Veerman
ca7a466f48 TTY: don't allow multiple readers on tty minor
TTY has no way of keeping track of multiple readers for a tty minor
device. Instead, it stores a read request for the last reader only.
Consequently, the first ("overwritten") reader gets stuck on a read
request that's never going to be finished. Also, the overwriting
causes a grant mismatch in VFS when TTY returns a reply for the
second reader.

This patch is a work around for the actual problem (i.e., keeping track
of multiple readers). It checks whether there is a read operation in
progress and returns an error if it is --preventing that reader from
getting overwritten and stuck. It fixes a bug triggered by executing
'top | more' and pressing the space bar for a while (easily reproducable
in a VM, not on hardware).
2012-04-13 13:22:13 +00:00
Thomas Veerman
933120b0b1 VFS: add getting active threads control msg 2012-04-13 13:21:01 +00:00
Thomas Veerman
e1a73469c8 VFS: remove debug print 2012-04-13 13:20:28 +00:00
Thomas Veerman
c2bb739760 VFS: let know when skipping reply 2012-04-13 13:19:45 +00:00
Thomas Veerman
91a38b6d4e VFS: fix dead lock
When running out of worker threads to handle device replies a dead
lock resolver thread is used. However, it was only used for FS
endpoints; it is now used for "system processes" (drivers and FS
endpoints). Also, drivers were marked as system process when they
were not "forced" to map (i.e., mapping was done before endpoint was
alive).
2012-04-13 13:19:10 +00:00
Thomas Veerman
b956493367 VFS: fix new signed/unsigned comparisons 2012-04-13 13:00:11 +00:00
Thomas Veerman
defe329519 VFS: warnings are errors 2012-04-13 12:59:32 +00:00
Thomas Veerman
8dd0880985 Add a simple utility to send control messages
The svrctl utility allows you to send control messages to VFS or PM.
This way you can retrieve runtime information or alter behavior.
2012-04-13 12:58:41 +00:00
Thomas Veerman
0d63d9e125 VFS: enable sending control messages 2012-04-13 12:54:55 +00:00
Thomas Veerman
8ae9987dca libmthread: add stack traces 2012-04-13 12:54:02 +00:00
Thomas Veerman
f571466c56 VFS: find job only if request is an transaction 2012-04-13 12:52:52 +00:00
Thomas Veerman
8f55767619 VFS: make m_in job local
By making m_in job local (i.e., each job has its own copy of m_in instead
of refering to the global m_in) we don't have to store and restore m_in
on every thread yield. This reduces overhead. Moreover, remove the
assumption that m_in is preserved. Do_XXX functions have to copy the
system call parameters as soon as possible and only pass those copies to
other functions.

Furthermore, this patch cleans up some code and uses better types in a lot
of places.
2012-04-13 12:50:38 +00:00
Ben Gras
99866db8cd vm: add MAP_FIXED 2012-04-12 15:01:36 +02:00
Ben Gras
1e2b3f4326 vfs: more regions for coredumps 2012-04-12 14:29:59 +02:00
Ben Gras
e83f7ba2c9 switch to netbsd csu
. file- and functionality-compatible with previous situation
          (FreeBSD csu) (with a crt1.o -> crt0.o symlink in /usr/lib)
        . harmonizes source with netbsd
        . harmonizes linker invocation (e.g. clang) with netbsd
        . helpful to get some arm code in there for the arm port project
2012-04-12 13:26:24 +02:00
Ben Gras
b02992f0c1 test: convert to bsdish Makefile
. smaller, simpler, less duplication, exceptions still
	  encodeable
	. fix for test10: too small a buffer to copy executables
2012-04-12 03:03:17 +02:00
Ben Gras
511c977f93 retire bios_wini 2012-04-12 03:02:21 +02:00