Commit graph

1131 commits

Author SHA1 Message Date
Arne Welzel
bf33a1c097 libsys: add sys_safememset() 2012-09-26 02:18:00 +02:00
Arne Welzel
d8a89dcbe6 kernel: add safememset() kernel call 2012-09-26 02:18:00 +02:00
Ben Gras
2d72cbec41 SYSENTER/SYSCALL support
. add cpufeature detection of both
	. use it for both ipc and kernelcall traps, using a register
	  for call number
	. SYSENTER/SYSCALL does not save any context, therefore userland
	  has to save it
	. to accomodate multiple kernel entry/exit types, the entry
	  type is recorded in the process struct. hitherto all types
	  were interrupt (soft int, exception, hard int); now SYSENTER/SYSCALL
	  is new, with the difference that context is not fully restored
	  from proc struct when running the process again. this can't be
	  done as some information is missing.
	. complication: cases in which the kernel has to fully change
	  process context (i.e. sigreturn). in that case the exit type
	  is changed from SYSENTER/SYSEXIT to soft-int (i.e. iret) and
	  context is fully restored from the proc struct. this does mean
	  the PC and SP must change, as the sysenter/sysexit userland code
	  will otherwise try to restore its own context. this is true in the
	  sigreturn case.
	. override all usage by setting libc_ipc=1
2012-09-24 15:53:43 +02:00
Ben Gras
fe6e291f59 vm, kernel, top: report memory usage of vm, kernel 2012-09-18 23:43:52 +02:00
Ben Gras
ed1af3c86c VM: full munmap
complete munmap implementation; single-page references made
a general munmap() implementation possible to write cleanly.

	. memory: let the MIOCRAMSIZE ioctl set the imgrd device
	  size (but only to 0)
	. let the ramdisk command set sizes to 0
	. use this command to set /dev/imgrd to 0 after mounting /usr
	  in /etc/rc, so the boot time ramdisk is freed (about 4MB
	  currently)
2012-09-18 13:17:52 +02:00
Ben Gras
053fa581b5 vm: remove stack handling for signals
. moved to the kernel as the handling was only
	  reading it; the kernel may as well write it too
2012-08-29 17:31:38 +02:00
Ben Gras
860224a4d4 stat.h: abi-compatible way to make st_size off_t 2012-08-29 01:20:30 +02:00
Arun Thomas
fd43d93ce5 ARM support for system libraries 2012-08-28 13:49:27 -04:00
Arun Thomas
9a9d555f56 machine/ipcconst.h for arch-specific constants 2012-08-27 19:46:41 -04:00
Ben Gras
41ab295654 hide block_t behind _MINIX (for gcc) 2012-08-24 18:07:37 +02:00
Arun Thomas
7ca1ce7968 VM: Add PTF_READ page table flag 2012-08-17 00:17:52 +02:00
Arun Thomas
a57a591f25 Reorganize arch consts and types
-DEFAULT_HZ const moved to archconst.h
-cpu_info struct moved to archtypes.h
2012-08-16 17:07:43 +02:00
Ben Gras
d69cc76e03 rename struct mem_range to minix_mem_range
. avoid a name clash with gdb
2012-08-15 15:17:25 +02:00
Arun Thomas
697f0d097f Rename sys_vmctl_get_cr3_i386 2012-08-12 23:30:54 +02:00
Arun Thomas
7fcec4ef61 drivers.h: fix machine includes 2012-08-10 22:12:13 +02:00
Arun Thomas
65a87d5bcb Fix prototypes for getdents, read, readlink 2012-08-10 22:09:43 +02:00
Arun Thomas
fbad9eaf95 Clean up arch Makefiles for libminc 2012-08-10 19:02:38 +02:00
Arun Thomas
3131ad3154 ARM headers 2012-08-10 19:02:19 +02:00
David van Moolenbroek
49aed1ad97 libsys: remove unused stacktrace variant 2012-08-09 00:16:35 +02:00
Arun Thomas
19ffad7692 Remove ACK EM_WSIZE/EM_PSIZE macro usage 2012-08-06 17:49:22 +02:00
Arun Thomas
6723dcfab7 Replace MACHINE/CHIP macros with compiler macros 2012-08-06 17:49:22 +02:00
Arun Thomas
5919360736 NetBSD ARM headers 2012-08-06 17:49:02 +02:00
Ben Gras
b6ea15115c kernel: facility for user-visible memory
. map all objects named usermapped_*.o with globally visible
	  pages; usermapped_glo_*.o with the VM 'global' bit on, i.e.
	  permanently in tlb (very scarce resource!)
	. added kinfo, machine, kmessages and loadinfo for a start
	. modified log, tty to make use of the shared messages struct
2012-07-28 20:57:38 +00:00
Ben Gras
cbcdb838f1 various coverity-inspired fixes
. some strncpy/strcpy to strlcpy conversions
	. new <minix/param.h> to avoid including other minix headers
	  that have colliding definitions with library and commands code,
	  causing parse warnings
	. removed some dead code / assignments
2012-07-16 14:00:56 +02:00
Ben Gras
1d48c0148e segmentless smp fixes
adjust the smp booting procedure for segmentless operation. changes are
mostly due to gdt/idt being dependent on paging, because of the high
location, and paging being on much sooner because of that too.

also smaller fixes: redefine DESC_SIZE, fix kernel makefile variable name
(crosscompiling), some null pointer checks that trap now because of a
sparser pagetable, acpi sanity checking
2012-07-15 22:47:20 +02:00
Ben Gras
50e2064049 No more intel/minix segments.
This commit removes all traces of Minix segments (the text/data/stack
memory map abstraction in the kernel) and significance of Intel segments
(hardware segments like CS, DS that add offsets to all addressing before
page table translation). This ultimately simplifies the memory layout
and addressing and makes the same layout possible on non-Intel
architectures.

There are only two types of addresses in the world now: virtual
and physical; even the kernel and processes have the same virtual
address space. Kernel and user processes can be distinguished at a
glance as processes won't use 0xF0000000 and above.

No static pre-allocated memory sizes exist any more.

Changes to booting:
        . The pre_init.c leaves the kernel and modules exactly as
          they were left by the bootloader in physical memory
        . The kernel starts running using physical addressing,
          loaded at a fixed location given in its linker script by the
          bootloader.  All code and data in this phase are linked to
          this fixed low location.
        . It makes a bootstrap pagetable to map itself to a
          fixed high location (also in linker script) and jumps to
          the high address. All code and data then use this high addressing.
        . All code/data symbols linked at the low addresses is prefixed by
          an objcopy step with __k_unpaged_*, so that that code cannot
          reference highly-linked symbols (which aren't valid yet) or vice
          versa (symbols that aren't valid any more).
        . The two addressing modes are separated in the linker script by
          collecting the unpaged_*.o objects and linking them with low
          addresses, and linking the rest high. Some objects are linked
          twice, once low and once high.
        . The bootstrap phase passes a lot of information (e.g. free memory
          list, physical location of the modules, etc.) using the kinfo
          struct.
        . After this bootstrap the low-linked part is freed.
        . The kernel maps in VM into the bootstrap page table so that VM can
          begin executing. Its first job is to make page tables for all other
          boot processes. So VM runs before RS, and RS gets a fully dynamic,
          VM-managed address space. VM gets its privilege info from RS as usual
          but that happens after RS starts running.
        . Both the kernel loading VM and VM organizing boot processes happen
	  using the libexec logic. This removes the last reason for VM to
	  still know much about exec() and vm/exec.c is gone.

Further Implementation:
        . All segments are based at 0 and have a 4 GB limit.
        . The kernel is mapped in at the top of the virtual address
          space so as not to constrain the user processes.
        . Processes do not use segments from the LDT at all; there are
          no segments in the LDT any more, so no LLDT is needed.
        . The Minix segments T/D/S are gone and so none of the
          user-space or in-kernel copy functions use them. The copy
          functions use a process endpoint of NONE to realize it's
          a physical address, virtual otherwise.
        . The umap call only makes sense to translate a virtual address
          to a physical address now.
        . Segments-related calls like newmap and alloc_segments are gone.
        . All segments-related translation in VM is gone (vir2map etc).
        . Initialization in VM is simpler as no moving around is necessary.
        . VM and all other boot processes can be linked wherever they wish
          and will be mapped in at the right location by the kernel and VM
          respectively.

Other changes:
        . The multiboot code is less special: it does not use mb_print
          for its diagnostics any more but uses printf() as normal, saving
          the output into the diagnostics buffer, only printing to the
          screen using the direct print functions if a panic() occurs.
        . The multiboot code uses the flexible 'free memory map list'
          style to receive the list of free memory if available.
        . The kernel determines the memory layout of the processes to
          a degree: it tells VM where the kernel starts and ends and
          where the kernel wants the top of the process to be. VM then
          uses this entire range, i.e. the stack is right at the top,
          and mmap()ped bits of memory are placed below that downwards,
          and the break grows upwards.

Other Consequences:
        . Every process gets its own page table as address spaces
          can't be separated any more by segments.
        . As all segments are 0-based, there is no distinction between
          virtual and linear addresses, nor between userspace and
          kernel addresses.
        . Less work is done when context switching, leading to a net
          performance increase. (8% faster on my machine for 'make servers'.)
	. The layout and configuration of the GDT makes sysenter and syscall
	  possible.
2012-07-15 22:30:15 +02:00
Ben Gras
cfe1ed4df4 profiling related cleanup
. do not declare any data in <minix/profile.h>
	. addr check no longer necessary
2012-07-15 21:56:55 +02:00
Ben Gras
ed993cd557 don't leave _VCS_REVISION in 2012-06-29 16:34:41 +02:00
Ben Gras
08f8084a21 align messages
Has a small but measurable performance improvement.
2012-06-29 16:13:54 +02:00
Thomas Veerman
f93afa00e9 Remove MINIXSRCDIR and use NETBSDSRCDIR
NETBSDSRCDIR is used all over the place anyway, and this reduces
our diff with NetBSD a little.
2012-06-18 10:53:35 +00:00
Ben Gras
0fb2f83da9 drop from segments physcopy/vircopy invocations
. sys_vircopy always uses D for both src and dst
	. sys_physcopy uses PHYS_SEG if and only if corresponding
	  endpoint is NONE, so we can derive the mode (PHYS_SEG or D)
	  from the endpoint arg in the kernel, dropping the seg args
	. fields in msg still filled in for backwards compatability,
	  using same NONE-logic in the library
2012-06-18 12:28:40 +00:00
Ben Gras
0e35eb0c6b drop segments from safemap/safeunmap invocations 2012-06-18 12:28:40 +00:00
Kees Jongenburger
ade7dc8ded Upgrade libddekit and introduce devmand.
Devmand (Device manager daemon) is the daemon that will
dynamically manage services based on events received from
the system.
2012-06-18 09:23:42 +02:00
Ben Gras
2bfeeed885 drop segment from safecopy invocations
. all invocations were S or D, so can safely be dropped
	  to prepare for the segmentless world
	. still assign D to the SCP_SEG field in the message
	  to make previous kernels usable
2012-06-16 16:22:51 +00:00
Ben Gras
769af57274 further libexec generalization
. new mode for sys_memset: include process so memset can be
	  done in physical or virtual address space.
	. add a mode to mmap() that lets a process allocate uninitialized
	  memory.
	. this allows an exec()er (RS, VFS, etc.) to request uninitialized
	  memory from VM and selectively clear the ranges that don't come
	  from a file, leaving no uninitialized memory left for the process
	  to see.
	. use callbacks for clearing the process, clearing memory in the
	  process, and copying into the process; so that the libexec code
	  can be used from rs, vfs, and in the future, kernel (to load vm)
	  and vm (to load boot-time processes)
2012-06-07 15:15:02 +02:00
Ben Gras
040362e379 exec() cleanup, generalization, improvement
. make exec() callers (i.e. vfs and rs) determine the
	  memory layout by explicitly reserving regions using
	  mmap() calls on behalf of the exec()ing process,
	  i.e. handling all of the exec logic, thereby eliminating
	  all special exec() knowledge from VM.
	. the new procedure is: clear the exec()ing process
	  first, then call third-party mmap()s to reserve memory, then
	  copy the executable file section contents in, all using callbacks
	  tailored to the caller's way of starting an executable
	. i.e. no more explicit EXEC_NEWMEM-style calls in PM or VM
	  as with rigid 2-section arguments
	. this naturally allows generalizing exec() by simply loading
	  all ELF sections
	. drop/merge of lots of duplicate exec() code into libexec
	. not copying the code sections to vfs and into the executable
	  again is a measurable performance improvement (about 3.3% faster
	  for 'make' in src/servers/)
2012-06-07 15:15:01 +02:00
Ben Gras
ee4016155e vm: add third-party mmap() mode and PROCCTL
these two functions will be used to support all exec() functionality
going into a single library shared by RS and VFS and exec() knowledge
leaving VM.

	. third-party mmap: allow certain processes (VFS, RS) to
	  do mmap() on behalf of another process
	. PROCCTL: used to free and clear a process' address space
2012-06-07 12:43:16 +02:00
Ben Gras
cfb2d7bca5 retire BIOS_SEG and umap_bios
. readbios call is now a physical copy with range check in
	  the kernel call instead of BIOS_SEG+umap_bios
	. requires all access to physical memory in bios range to go
	  through sys_readbios
	. drivers/dpeth: wasn't using it
	. adjusted printer
2012-05-09 19:03:59 +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
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
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
a149be43fc use linker to align fpu state save area 2012-04-19 15:06:47 +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
Thomas Veerman
8ae9987dca libmthread: add stack traces 2012-04-13 12:54:02 +00:00
Ben Gras
99866db8cd vm: add MAP_FIXED 2012-04-12 15:01:36 +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
David van Moolenbroek
bb4d055fa6 Add libvboxfs: VirtualBox shared folders library 2012-04-09 19:25:18 +02:00
David van Moolenbroek
ef7b484e5c Create SFFS library out of HGFS
This Shared Folders File System library (libsffs) now contains all the
file system logic originally in HGFS. The actual HGFS server code is
now a stub that passes on all the work to libsffs. The libhgfs library
is changed accordingly.
2012-04-09 18:08:26 +02:00
David van Moolenbroek
09b327b042 HGFS: move all VMware-specific code into libhgfs 2012-04-09 17:32:36 +02:00
David van Moolenbroek
060399d9dd SEF: add sef_cancel()
This function allows the caller to cancel receiving a message from a
SEF callback. The receive function will then return EINTR.
2012-04-09 16:35:57 +02:00
David van Moolenbroek
6aa61efd09 VBOX: add host/guest communication interface
This interface can be used by other system processes by means of the
newly provided vbox API in libsys.
2012-04-09 15:56:20 +02:00
David van Moolenbroek
638ce89250 hgfs: subsecond timestamp precision
Slightly cleaned up version of patch contributed by Antoine Leca.
2012-03-30 01:40:07 +02:00
Ben Gras
a63151d3f8 next release will be 3.2.1 2012-03-27 12:31:30 +02:00
Ben Gras
204ae72525 retire _ANSI and <minix/ansi.h> 2012-03-25 21:58:27 +02:00
Ben Gras
f22864c24e get rid of __LONG_LONG_SUPPORTED
. also drop minix-specific code in libarchive
	  that was needed for not supporting 64 bit ints
2012-03-25 21:58:26 +02:00
Ben Gras
23df780120 get rid of _RESTRICT 2012-03-25 21:58:25 +02:00
Ben Gras
db242ed39d retire _CONST, _VOLATILE, _SIZET, _ARGS, _VOID 2012-03-25 21:58:20 +02:00
Ben Gras
7336a67dfe retire PUBLIC, PRIVATE and FORWARD 2012-03-25 21:58:14 +02:00
Ben Gras
6a73e85ad1 retire _PROTOTYPE
. only good for obsolete K&R support
	. also remove a stray ansi.h and the proto cmd
2012-03-25 16:17:10 +02:00
David van Moolenbroek
70abb127cc Add sys_vumap() kernel call
This new call is a vectored version of sys_umap(). It supports batch
lookups, non-contiguous memory, faulting in memory, and basic access
checks.
2012-03-24 19:51:13 +01:00
David van Moolenbroek
f140910d3c Clean up a stale a.out-related declaration 2012-03-19 00:10:18 +01:00
Ben Gras
d65f6f7009 imported code harmonisation
. common/include/arch/i386 is not actually an imported
	  sys/arch/i386/include but leftover Minix files;
	  remove and move to include/
	. move include/ufs to sys/ufs, where it came from, now that
	  we have a sys/ hierarchy
	. move mdocml/ to external/bsd/, now we have that
	. single sys/arch/i386/stand/ import for boot stuff
2012-03-14 16:02:59 +01:00
David van Moolenbroek
21ed531c8f pci: remove pci_init1 API call 2012-03-07 23:56:08 +01:00
David van Moolenbroek
ca95f69f25 drivers: resolve compiler warnings 2012-03-05 22:32:55 +01:00
Tomas Hruby
fb31513b00 LWIP,NETSOCK - lwip uses asynchronous protocol
- libnetsock - internal implementation of a socket on the lwip
  server side. it encapsulates the asynchronous protocol

- lwip server - uses libnetsock to work with the asynchronous
  protocol
2012-03-02 15:44:48 +00:00
Tomas Hruby
72b7abd1a1 VFS - no CANCEL for async non-blocking operations
- if an operation (R, W, IOCTL) is non blocking, a flag is set
  and sent to the device.

- nothing changes for sync devices

- asyn devices should reply asap if an operation is non-blocking.
  We must trust the devices, but we had to trust them anyway to
  reply to CANCEL correctly

- we safe sending CANCEL commands to asyn devices. This greatly
  simplifies the protocol. Asynchronous devices can always reply
  when a reply is ready and do not need to deal with other
  situations

- currently, none of our drivers use the flags since they drive
  virtual devices which do not block
2012-03-02 15:44:48 +00:00
Tomas Hruby
369a12704f VFS - dev_style_asyn()
- dev_style_asyn() tests whether a device is asynchronous

 - simplifies code and helps readability
2012-03-02 15:44:47 +00:00
Ben Gras
2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00
David van Moolenbroek
2c685f34e0 Cut PM out of the adddma/deldma/getdma call path 2012-01-14 00:27:06 +01:00
David van Moolenbroek
8cb7ba7951 Remove obsolete PROCSTAT/getsigset call. 2012-01-14 00:27:06 +01:00
Ben Gras
4668b84158 vm_remap_ro
- allows shared memory to be mapped in readonly

- ben@minix3.org & tom@minix3.org
2012-01-13 11:30:01 +00:00
David van Moolenbroek
472a91708a Move hgfs.h to minix includes directory 2011-12-23 19:01:14 +01:00
Thomas Veerman
b4fb061802 Implement issetugid syscall
Implement issetugid syscall and provide a test. This gets rid of the
scary "Unsecure. Implement me" warning during compilation.
2011-11-28 10:03:43 +00:00
Adriana Szekeres
c30f014a89 gcore command to coredump a process 2011-11-22 22:07:41 +01:00
Adriana Szekeres
eaa29370f4 ELF core files 2011-11-22 22:07:40 +01:00
Ben Gras
349a158056 base system hooks for pkgsrc drivers
. rc script and service know to look in /usr/pkg/.. for
	  extra binaries and conf files
	. service split into parsing config and doing RS request
	  so that a new utility (printconfig) can just print the
	  config in machine-parseable format for netconf integration
	. converted all base system eth drivers/netconf
2011-11-16 16:18:21 +01:00
David van Moolenbroek
34c14b1cab More cleanup: no more CMOS and SCSI ioctls 2011-11-16 11:50:53 +01:00
Thomas Veerman
490e0de548 Import librefuse and libpuffs
Import libpuffs and our port of libpuffs. The port was done as part of
GSoC 2011 FUSE project, done by Evgeniy Ivanov. The librefuse import
did not require any porting efforts. Libpuffs has been modified to
understand our VFS-FS protocol and translate between that and PUFFS. As
an example that it works, fuse-ntfs-3g from pkgsrc can be compiled and
used to mount ntfs partitions:
mount -t ntfs-3g <device> <mountpoint>

FUSE only works with the asynchronous version of VFS. See <docs/UPDATING> on
how to run AVFS.

This patch further includes some changes to mount(1) and mount(2) so it's
possible to use file systems provided by pkgsrc (note: manual modifications
to /etc/system.conf are still needed. There has been made an exception for
fuse-ntfs-3g, so it already as an entry).
2011-11-14 11:53:05 +00:00
Thomas Veerman
a209c3ae12 Fix a ton of compiler warnings
This patch fixes most of current reasons to generate compiler warnings.
The changes consist of:
 - adding missing casts
 - hiding or unhiding function declarations
 - including headers where missing
 - add __UNCONST when assigning a const char * to a char *
 - adding missing return statements
 - changing some types from unsigned to signed, as the code seems to want
   signed ints
 - converting old-style function definitions to current style (i.e.,
   void func(param1, param2) short param1, param2; {...} to
   void func (short param1, short param2) {...})
 - making the compiler silent about signed vs unsigned comparisons. We
   have too many of those in the new libc to fix.

A number of bugs in the test set were fixed. These bugs were never
triggered with our old libc. Consequently, these tests are now forced to
link with the new libc or they will generate errors (in particular tests 43
and 55).

Most changes in NetBSD libc are limited to moving aroudn "#ifndef __minix"
or stuff related to Minix-specific things (code in sys-minix or gen/minix).
2011-11-14 10:07:49 +00:00
Ben Gras
4857d5d554 add -lminixfs with fs support routines
. move cache size heuristic from mfs there
	  so mfs and ext2 can share it
	. add vfs credentials retrieving function, with
	  backwards compatability from previous struct
	  format, to be used by both ext2 and mfs
	. fix for ext2 - STATICINIT was fed no.
	  of bytes instead of no. of elements, overallocating
	  memory by a megabyte or two for the superblock
2011-09-08 16:52:13 +00:00
Thomas Veerman
8a266a478e Increase gid_t and uid_t to 32 bits
Increase gid_t and uid_t to 32 bits and provide backwards compatibility
where needed.
2011-09-05 13:56:14 +00:00
Thomas Veerman
fde9a258d0 Make dev_t 32-bits and provide backwards compatibility 2011-09-05 08:52:57 +00:00
Ben Gras
86b5fa5102 get rid of leftover _DIRENT_NAME_LEN=61 2011-09-01 16:27:28 +00:00
Ben Gras
f984dbba70 increase system-wide filename limit to 255
. move mfs-specific struct, constants to mfs/, so
	  mfs-specific, on-disk format structs and consts are
	  fully isolated from generic structs and functions
	. removes de and readfs utils
2011-08-17 16:00:01 +00:00
Ben Gras
51ffecc181 import elf-only -lcurses
. abandons mixer, gomoku, talk, talkd, top from base system
	. compile top with clang so no ack-compiled program
	  needs -lcurses any more
2011-07-25 11:08:17 +02:00
Ben Gras
02081e4b62 rename mmap() and munmap()
. it's a good extra interface to have but doesn't
	  meet standardised functionality
	. applications (in pkgsrc) find it and expect
	  full functionality the minix mmap doesn't offter
	. on the whole probably better to hide these functions
	  (mmap and friends) until they are grown up; the base system
	  can use the new minix_* names
2011-07-16 13:01:19 +02:00
Ben Gras
85f6d866e6 rename mmap MAP_SHARED to MAP_IPC_SHARED
. MAP_SHARED was used to implement sysv shared memory
	. used to signal shareable memory region to VM
	. assumptions about this situation break when processes
	  use MAP_SHARED for its normal, standardised meaning
2011-07-15 18:10:50 +02:00
Evgeniy Ivanov
ef0a265086 New stat structure.
* VFS and installed MFSes must be in sync before and after this change *

Use struct stat from NetBSD. It requires adding new STAT, FSTAT and LSTAT
syscalls. Libc modification is both backward and forward compatible.

Also new struct stat uses modern field sizes to avoid ABI
incompatibility, when we update uid_t, gid_t and company.
Exceptions are ino_t and off_t in old libc (though paddings added).
2011-07-12 16:39:55 +02:00
Ben Gras
f3d5a9dc61 Reduce compiler/libraries/headers cases to only two
1. ack, a.out, minix headers (moved to /usr/include.ack),
	   minix libc
	2. gcc/clang, elf, netbsd headers (moved to /usr/include),
	   netbsd libc (moved to /usr/lib)

So this obsoletes the /usr/netbsd hierarchy.

No special invocation for netbsd libc necessary - it's always used
for gcc/clang.
2011-07-04 04:09:52 +02:00
Arun Thomas
93ae43f577 boot: Add multiboot support
Not yet fully spec-compliant; work in progress
2011-06-24 17:21:51 +02:00
Ben Gras
e785381d4d introduce option to time assert()s
. remove a few asserts in the kernel and 64bi library
    that are not compatible with the timing code
  . change the TIME_BLOCKS code a little to work in-kernel
2011-06-24 16:00:42 +02:00
Gianluca Guida
4e86b0d53f Move back resolv.h, nameser.h and netdb.h as they conflict with NetBSD headers and libc. 2011-04-08 18:50:58 +00:00
Gianluca Guida
6f4e3dd910 Move elf headers in common/include and libexec.h in lib/libexec.
It also fixes elf headers for NBSD compilation.
2011-03-18 15:13:05 +00:00
Gianluca Guida
f4814901af Move even more includes to common/include.
This patch moves more includes (most of them, to tell the truth) to
common/include directory. This completes the list of includes needed
to compile current trunk with the new libc (but to do that you need
more patches in queue).

This patch also contains some modification (for compilation with new
headers) to the common includes under __NBSD_LIBC, the define used
in mk script to specialize compilation with new includes.
2011-03-03 16:39:02 +00:00
Ben Gras
493ea15714 rename aligned() macro to _minix_aligned 2011-03-02 16:05:59 +00:00
Ben Gras
b6f25271a9 only declare builtin prototypes in C mode 2011-02-28 11:01:31 +00:00
Ben Gras
813ba29677 build fix 2011-02-26 11:42:25 +00:00
Dirk Vogt
3c9012886f added DDEkit headers 2011-02-25 12:31:20 +00:00
Dirk Vogt
00dcbb9dc6 Added Device Manager (USB hotplug support) 2011-02-23 13:48:03 +00:00
Dirk Vogt
083d30afbb added libusb, a IPC abstraction lib for USB stuff 2011-02-22 10:23:38 +00:00
Dirk Vogt
55ccdba0f6 USB chapter 9 definitions 2011-02-21 14:09:08 +00:00
Dirk Vogt
8f860a27d1 Increase maximum filename length for /sys/ 2011-02-18 12:47:25 +00:00
Gianluca Guida
05480c229a Move network includes and lib.h into common/include subdir.
This patch moves further includes (the network part and lib.h) in common/.
It is the last part to get the netbsd libc to compile under minix. Further moves will be needed as we get the netbsd libc to compile minix itself.

Also, this patch add #ifndef's to termios.h, as it create problems with netbsd's namespace.h.
2011-02-14 12:49:18 +00:00
Gianluca Guida
fa59fc6eb4 Move shared headers in common/include
Headers that will be shared between old includes and NetBSD-like includes
are moved into common/include tree. They are still copied in /usr/include
in 'make includes', so compilation and programs aren't be affected.
2011-02-06 22:59:02 +00:00
Ben Gras
0203ea37bf include - throw out gettiminglocks stuff from include 2011-02-04 13:42:54 +00:00
Ben Gras
4fc9428808 <ansi.h> -> <minix/ansi.h> 2011-01-28 11:50:47 +00:00
Ben Gras
dc1cc91df1 <ansi.h> -> <minix/ansi.h> 2011-01-28 11:35:02 +00:00
Ben Gras
e50070e3b3 added uint typedef declaration in <minix/types.h>
. needed for xmlrpc (needed for cmake (needed for compiler-rt))
2011-01-26 14:36:19 +00:00
Ben Gras
7b2d6c3c98 added <complex.h> (needed for compiler-rt) 2011-01-26 14:35:34 +00:00
David van Moolenbroek
5d8d5e0c3a change bitchunk_t from 16-bit to 32-bit 2010-12-21 10:44:45 +00:00
David van Moolenbroek
d23c3d110e sys/queue.h: add LIST_FOREACH_SAFE 2010-12-20 23:52:53 +00:00
Arun Thomas
372b873413 VFS/RS support for ELF 2010-12-10 09:27:56 +00:00
David van Moolenbroek
a7285dfabc Kernel/RS: fix permission computation with 32+ system processes 2010-12-07 10:32:42 +00:00
Dirk Vogt
9ed280d1ec decouple file system server start/termination from mount/umount 2010-11-23 19:34:56 +00:00
Arun Thomas
6b5c8751da Add machine/param.h 2010-11-23 11:05:09 +00:00
Tomas Hruby
504abf4b34 Inlining 64bit integer handling functions
- if gcc/clang is used the C functions that use long long can be
  inlined to get better performance (yes, it makes difference)
2010-11-18 16:37:40 +00:00
Dirk Vogt
6208131459 libdriver without mandatory driver main loop 2010-11-17 15:10:20 +00:00
Dirk Vogt
c22564335f Added possibility to inject input events to tty
M    include/Makefile
A    include/minix/input.h
M    include/minix/com.h
M    drivers/tty/keyboard.c
M    drivers/tty/tty.c
M    drivers/tty/tty.h
M    include/minix/syslib.h
M    lib/libsys/Makefile
A    lib/libsys/input.c
2010-11-17 14:53:07 +00:00
Arun Thomas
f0ab18377d GCC/clang: int64 routines in C 2010-11-12 18:38:10 +00:00
Erik van der Kouwe
afeb246328 Remove global variable 'i' 2010-11-11 14:12:48 +00:00
Arun Thomas
998af6f111 Move minix/paths.h to paths.h
Also, merge in relevant macros from NetBSD
2010-11-06 20:40:15 +00:00
Tomas Hruby
ac780f36a0 sys_getcpuinfo() 2010-10-26 21:07:50 +00:00
Tomas Hruby
c9bfb13cdb Kernel keeps information about each cpu
- kernel maintains a cpu_info array which contains various
  information about each cpu as filled when each cpu boots

- the information contains idetification, features etc.
2010-10-26 21:07:27 +00:00
Tomas Hruby
40bfed28cd ACPI pci-to-pci bridges
- every pci device which implements _PRT acpi method is considered to
  be a pci-to-pci bridge

- acpi driver constructs a hierarchy of pci-to-pci bridges

- when pci driver identifies a pci-to-pci bridge it tells acpi driver
  what is the primary and the secondary bus for this device

- when pci requests IRQ routing information from acpi, it passes the
  bus number too to be able to identify the device accurately
2010-10-21 17:07:09 +00:00
Ben Gras
b0d7ce8d09 <minix/hash.h> 2010-10-15 11:25:40 +00:00
Ben Gras
26de8dd299 change SSIZE_MAX to INT_MAX instead of 32767.
With this change, suggested by Gautam Tirumala, ports for pkgin and
pkg_install are cleaner and so easier to upstream.  Presumably other
ports will be smoother too.

There doesn't seem to be a reason SSIZE_MAX was so small to begin with.
2010-10-10 22:33:23 +00:00
Ben Gras
e0ac271e5a include <sys/cdefs.h> in <minix/sysutil> (clang fix) 2010-10-06 13:09:49 +00:00
Erik van der Kouwe
ada0b4ca04 Fix warnings due to missing __dead attribute on exit 2010-10-05 07:25:47 +00:00
Erik van der Kouwe
7bc944c8a9 fflush is neither needed nor allowed in system srvers, which is where SEF is used 2010-10-04 17:38:53 +00:00
Arun Thomas
40ccb7ed54 Add include/memory.h
Some ports expect that it exists.
2010-10-04 13:37:46 +00:00
Thomas Veerman
a7072a5e1c Revamp the mthread library and update test59
Before, the 'main thread' of a process was never taken into account anywhere in
the library, causing mutexes not to work properly (and consequently, neither
did the condition variables). For example, if the 'main thread' (that is, the
thread which is started at the beginning of a process; not a spawned thread by
the library) would lock a mutex, it wasn't actually locked.
2010-09-30 13:44:13 +00:00
Tomas Hruby
274fcf8d1f neg64() makes a 64bit integer negative
- neg64(a) == -a

- although we only support 64 bit unsigned arithmetics sometimes it's good to
  have a 2-complement negative number
2010-09-23 14:42:26 +00:00
Tomas Hruby
8eece1c00c CPU type detection
- sometimes the system needs to know precisely on what type of cpu is
  running. The cpu type id detected during arch specific
  initialization and kept in the machine structure for later use.

- as a side-effect the information is exported to userland
2010-09-23 14:42:19 +00:00
Tomas Hruby
74c5cd7668 The profile utility can set the sprofiling mode
- profile --nmi | --rtc sets the profiling mode

- --rtc is default, uses BIOS RTC, cannot profile kernel the presetted
  frequency values apply

- --nmi is only available in APIC mode as it uses the NMI watchdog, -f
  allows any frequency in Hz

- both modes use compatible data structures
2010-09-23 10:49:42 +00:00
Tomas Hruby
db12229ce3 New profile protocol
- when kernel profiles a process for the first time it saves an entry
  describing the process [endpoint|name]

- every profile sample is only [endpoint|pc]

- profile utility creates a table of endpoint <-> name relations and
  translates endpoints of samples into names and writing out the
  results to comply with the processing tools

- "task" endpoints like KERNEL are negative thus we must cast it to
  unsigned when hashing
2010-09-23 10:49:39 +00:00
Thomas Veerman
62aba4396e Get rid of erroneous define 2010-09-23 08:52:49 +00:00
Ben Gras
d55eab30fa includes - minor compile fixes. 2010-09-22 14:31:51 +00:00
Thomas Veerman
12e167f672 Add libmthread and test59 to test the implementation 2010-09-21 12:22:38 +00:00
Tomas Hruby
a665ae3de1 Userspace scheduling - exporting stats
- contributed by Bjorn Swift

- adds process accounting, for example counting the number of messages
  sent, how often the process was preemted and how much time it spent
  in the run queue. These statistics, along with the current cpu load,
  are sent back to the user-space scheduler in the Out Of Quantum
  message.

- the user-space scheduler may choose to make use of these statistics
  when making scheduling decisions. For isntance the cpu load becomes
  especially useful when scheduling on multiple cores.
2010-09-19 15:52:12 +00:00
Tomas Hruby
1f89845bb2 SMP - can boot even if some cpus fail to boot
- EBADCPU is returned is scheduler tries to run a process on a CPU
  that either does not exist or isn't booted

- this change was originally meant to deal with stupid cpuid
  instruction which provides totally useless information about
  hyper-threading and MPS which does not deal with ht at all. ACPI
  provides correct information. If ht is turned off it looks like some
  CPUs failed to boot.  Nevertheless this patch may be handy for
  testing/benchmarking in the future.
2010-09-15 14:11:21 +00:00
Tomas Hruby
6513d20744 SMP - Process is stopped when VM modifies the page tables
- RTS_VMINHIBIT flag is used to stop process while VM is fiddling with
  its pagetables

- more generic way of sending synchronous scheduling events among cpus

- do the x-cpu smp sched calls only if the target process is runnable.
  If it is not, it cannot be running and it cannot become runnable
  this CPU holds the BKL
2010-09-15 14:11:12 +00:00
Tomas Hruby
06b6e5624a SMP - Changed prototype of sys_schedule()
- sys_schedule can change only selected values, -1 means that the
  current value should be kept unchanged. For instance we mostly want
  to change the scheduling quantum and priority but we want to keep
  the process at the current cpu

- RS can hand off its processes to scheduler

- service can read the destination cpu from system.conf

- RS can pass the information farther
2010-09-15 14:10:42 +00:00
Tomas Hruby
1e273f640e SMP - Scheduler can assign process to a cpu
- machine information contains the number of cpus and the bsp id

- a dummy SMP scheduler which keeps all system processes on BSP and
  all other process on APs. The scheduler remembers how many processes
  are assigned to each CPU and always picks the one with the least
  processes for a new process.
2010-09-15 14:10:33 +00:00
Tomas Hruby
62c666566e SMP - We boot APs
- kernel detects CPUs by searching ACPI tables for local apic nodes

- each CPU has its own TSS that points to its own stack. All cpus boot
  on the same boot stack (in sequence) but switch to its private stack
  as soon as they can.

- final booting code in main() placed in bsp_finish_booting() which is
  executed only after the BSP switches to its final stack

- apic functions to send startup interrupts

- assembler functions to handle CPU features not needed for single cpu
  mode like memory barries, HT detection etc.

- new files kernel/smp.[ch], kernel/arch/i386/arch_smp.c and
  kernel/arch/i386/include/arch_smp.h

- 16-bit trampoline code for the APs. It is executed by each AP after
  receiving startup IPIs it brings up the CPUs to 32bit mode and let
  them spin in an infinite loop so they don't do any damage.

- implementation of kernel spinlock

- CONFIG_SMP and CONFIG_MAX_CPUS set by the build system
2010-09-15 14:09:52 +00:00
Tomas Hruby
13a0d5fa5e SMP - Cpu local variables
- most global variables carry information which is specific to the
  local CPU and each CPU must have its own copy

- cpu local variable must be declared in cpulocal.h between
  DECLARE_CPULOCAL_START and DECLARE_CPULOCAL_END markers using
  DECLARE_CPULOCAL macro

- to access the cpu local data the provided macros must be used

	get_cpu_var(cpu, name)
	get_cpu_var_ptr(cpu, name)

	get_cpulocal_var(name)
	get_cpulocal_var_ptr(name)

- using this macros makes future changes in the implementation
  possible

- switching to ELF will make the declaration of cpu local data much
  simpler, e.g.

  CPULOCAL int blah;

  anywhere in the kernel source code
2010-09-15 14:09:46 +00:00
Ben Gras
467a01024e bump trunk version to 3.1.9
make issue.install not include version
2010-09-15 08:47:42 +00:00
Ben Gras
2065c9982b include - minor compile fixes (including <ansi.h> in files that use it)
workaround for kernel/debug.h that causes <ansi.h> to be included in mpx.S
indirectly.
2010-09-15 08:47:10 +00:00
David van Moolenbroek
354da24f5b make getsysinfo() a system-land call 2010-09-14 21:50:05 +00:00
David van Moolenbroek
d269f5fb90 ProcFS integration 2010-09-14 21:27:31 +00:00
David van Moolenbroek
2c5c5c06ea ProcFS server, by Alen Stojanov and David van Moolenbroek 2010-09-14 21:25:25 +00:00
David van Moolenbroek
3eb65448a6 VM: expose secondary cache size 2010-09-14 21:22:56 +00:00
Ben Gras
a5a8c57fe7 add EHOSTDOWN errno. 2010-09-14 11:51:41 +00:00
Tomas Hruby
ad5ecf906b asm.h not installed 2010-09-03 17:01:18 +00:00
Tomas Hruby
9560b6dea8 ACPI driver
- 99% of the code is Intel's ACPICA. The license is compliant with BSD
  and GNU and virtually all systems that use ACPI use this code, For
  instance it is part of the Linux kernel.

- The only minix specific files are

  acpi.c
  osminixxf.c
  platform/acminix.h

  and

  include/minix/acpi.h

- At the moment the driver does not register interrupt hooks which I
  believe is mainly for handling PnP, events like "battery level is
  low" and power management. Should not be difficult to add it if need
  be.

- The interface to the outside world is virtually non-existent except
  a trivial message based service for PCI driver to query which device
  is connected to what IRQ line. This will evolve as more components
  start using this driver. VM, Scheduler and IOMMU are the possible
  users right now.

- because of dependency on a native 64bit (long long, part of c99) it
  is compiled only with a gnu-like compilers which in case of Minix
  includes gcc llvm-gcc and clang
2010-09-02 15:44:04 +00:00
Tomas Hruby
43a4725423 pci_*.h headers moved from drivers/pci to include/machine 2010-09-02 15:43:59 +00:00
Tomas Hruby
2440ffae49 Kernel exports DSDP and apic_enabled in machine structure
- kernel exports DSDP (the root pointer where ACPI parsing starts) and
  apic_enabled in the machine structure.

- ACPI driver uses DSDP to locate ACPI in memory. acpi_enabled tell
  PCI driver to query ACPI for IRQ routing information.
2010-09-02 15:43:56 +00:00
Tomas Hruby
344e9221ec Kernel supports up to 64 IRQs
- enough for 2 io apics (usually with 24 pins)
2010-09-02 15:43:54 +00:00
Ben Gras
b1847ae244 make service look in /etc/system.conf.d/<progname> first for config file.
This makes it easier to
  - have non-base system drivers (get clobbered by global system.conf)
  - have drivers as packages (can't touch global system.conf)
  - make configs part of the drivers/servers instead of in global file
    (makes system parts more self-contained)
2010-08-31 14:33:31 +00:00
Erik van der Kouwe
1f2054c89c Shutdown changes for multiboot: CTRL-ALT-DEL resets, panic halts 2010-08-30 19:01:58 +00:00
Arun Thomas
36fb30dfef cdefs.h: Allow __CONCAT() macro to be nested 2010-08-30 14:34:58 +00:00
Thomas Veerman
2297e26660 Prepare headers to support file descriptor passing over UNIX Domain Sockets.
Contributed by Thomas Cort.
2010-08-30 13:41:22 +00:00
Ben Gras
5d6c2aae0a gcov support, based on work contributed by Anton Kuijsten. 2010-08-25 13:06:43 +00:00
Ben Gras
0f4eda33eb new base libaudiodriver out of -lcommon in drivers/audio.
- this lets the drivers that used that library be compiled easily with
   different compilers.
2010-08-25 11:03:53 +00:00
Ben Gras
1d0e0e217d <stddef.h> - alternative definition of offsetof for gcc using builtin 2010-08-25 07:25:32 +00:00
Erik van der Kouwe
3211be5d14 Avoid duplicate type definitions, especially wchar_t which was inconsstent and caused trouble in libarchive 2010-08-23 17:00:04 +00:00
Arun Thomas
de231a713e Move MIN() and MAX() macros to sys/params.h 2010-08-21 13:10:41 +00:00
Arun Thomas
60a71efca8 easprintf() and evasprintf() 2010-08-21 13:07:25 +00:00
Erik van der Kouwe
b337d3f8e5 move rrrrrrread_tsc from libsys to libc so anyone can use it 2010-08-20 18:43:56 +00:00
Arun Thomas
9a21d1a2fd Macros for symbols used in both ASM and C
-The macros take care of prepending the leading underscore when
 necessary.
2010-08-17 16:44:07 +00:00
Erik van der Kouwe
551374c228 Add ftello function 2010-08-16 17:07:40 +00:00
Erik van der Kouwe
a3e4dcafe0 Add fseeko function 2010-08-16 17:06:08 +00:00
David van Moolenbroek
484b2f43d6 at_wini/ahci: write cache ioctls 2010-08-12 14:09:34 +00:00
David van Moolenbroek
bee1f38e01 VTreeFS library 2010-08-10 20:05:51 +00:00
Tomas Hruby
d5482f6e75 Reverted __packed for ACK
- ack does not produce packed structures
2010-08-06 10:28:40 +00:00
Tomas Hruby
6e614336d6 __packed defined for ACK 2010-08-06 09:53:53 +00:00
Erik van der Kouwe
42a2c1a03a Increase max number of open files to 255 (more should be possible but does not seem necessary for now) 2010-08-04 13:35:19 +00:00
Erik van der Kouwe
a719ab7780 Auto-detect ext2 partitions in mount 2010-08-03 06:28:58 +00:00
Thomas Veerman
253b4b3fe5 - Add support for ST_NOTRUNC to struct statvfs.
- Let tests that test for long file names check for that flag, so that they can
  verify the results properly.
2010-08-02 11:16:32 +00:00
David van Moolenbroek
20eced94e7 libdriver: allow driver to break out of message loop 2010-08-01 22:07:46 +00:00
David van Moolenbroek
da597227ac put env_arg[cv] declaration in minix/sysutil.h 2010-07-29 21:16:23 +00:00
Tomas Hruby
170b420d07 driver.h - missing guardian 2010-07-29 10:53:50 +00:00
Ben Gras
49fe8e24b2 rename nameserv.h 2010-07-29 08:41:22 +00:00
Ben Gras
fb96391106 rename nemserv 2010-07-29 08:39:49 +00:00
Ben Gras
a022f412b5 extra includes to make porting cleaner 2010-07-28 16:32:45 +00:00
Ben Gras
05bbf81f93 new EPFNOSUPPORT errno 2010-07-28 16:32:21 +00:00
Arun Thomas
dafc8f1062 Add poll.h
Open Group requires this. Reported by Thomas Cort.
2010-07-27 09:21:56 +00:00
Arun Thomas
ee1cabf06c Import poll() from NetBSD's libnbcompat 2010-07-26 20:46:04 +00:00
Ben Gras
541b5c5c38 inet_pton(), patched by Thomas Cort. 2010-07-26 14:47:10 +00:00
Ben Gras
008cc7c1a7 stdio.h - define P_tmpdir 2010-07-26 14:46:35 +00:00
Ben Gras
149153f8ca <sys/resource.h> - define RLIM_NLIMITS 2010-07-26 10:04:45 +00:00
Ben Gras
34a58c8d82 inet_ntop, contributed by Thomas Cort. 2010-07-23 09:54:47 +00:00
Erik van der Kouwe
3a5d923bf1 IO port is always 16 bit, even for inl 2010-07-23 07:25:21 +00:00
Erik van der Kouwe
7b9bddad1b {in,out}s[bwl] deleted in previous commit, also delete their headers 2010-07-23 07:24:34 +00:00
Arun Thomas
dbde088d98 Replace NULL macro defs with null.h include 2010-07-22 10:03:31 +00:00
Tomas Hruby
62d44dc9ef service utility fix
- of course 0 is a valid cpu
2010-07-22 09:57:14 +00:00
Arun Thomas
88e7725c13 string.h: Include null.h 2010-07-21 15:37:42 +00:00
Cristiano Giuffrida
91a83fe265 Crash recovery and live update support for VM. 2010-07-20 23:03:52 +00:00
Tomas Hruby
f248bffc9e service utility can par cpu option in system.conf
- does not have any effect, solely for debugging SMP

- backward compatible with older RS instance
2010-07-20 07:27:45 +00:00
Ben Gras
53b6f99fb0 includes: remove some prototypes of functions that aren't defined. 2010-07-19 11:39:57 +00:00
Ben Gras
f08922e848 include - string functions. 2010-07-19 10:46:49 +00:00
Ben Gras
b05c989298 kernel - prettier output for ipc errors, call names instead of trap numbers 2010-07-16 15:36:29 +00:00
Ben Gras
28b533cf87 includes - link in new ones 2010-07-16 00:12:32 +00:00
Ben Gras
2a556de6d2 further sha2 conversion by Gautam Tirumala 2010-07-16 00:12:16 +00:00
Ben Gras
feaa082ea8 libutil - sha1 functions. 2010-07-16 00:11:16 +00:00
Ben Gras
117bac1e2d libutil: md5 functions. 2010-07-16 00:06:00 +00:00
Ben Gras
6c66933f90 64-bit bitwise manipulation functions, by Gautam Tirumala. 2010-07-15 23:48:56 +00:00
Thomas Veerman
ecc8a52f82 Add getnucred system call. Contributed by Thomas Cort 2010-07-15 13:24:57 +00:00
Thomas Veerman
17a0731f28 Update header files to support UNIX Domain Sockets. Contributed by Thomas Cort 2010-07-15 12:48:15 +00:00
Thomas Veerman
ca0bed1400 Add EOVERFLOW error condition 2010-07-15 12:36:41 +00:00
Ben Gras
8a0c10fcb9 lib: mkdtemp(), contributed by by Gautam Tirumala 2010-07-14 22:45:28 +00:00
Ben Gras
4fcd34137c includes: header files for netbsd db code. 2010-07-14 14:52:02 +00:00
Cristiano Giuffrida
f8a8ea0a79 Dynamic configuration in system.conf for boot system services. 2010-07-13 21:11:44 +00:00
Ben Gras
f6e558f5d4 errno EFTYPE 2010-07-13 20:05:47 +00:00
Cristiano Giuffrida
8cedace2f5 Scheduling parameters out of the kernel. 2010-07-13 15:30:17 +00:00
David van Moolenbroek
1ecdac623a libsys: add standard condition spinning primitives 2010-07-12 23:14:40 +00:00
Arun Thomas
bcaf746508 Import strsep() from NetBSD's libnbcompat
Ported by Gautam Tirumala
2010-07-12 17:41:31 +00:00
Arun Thomas
652618e458 shquote() from NetBSD's libnbcompat
Ported by Gautam Tirumala
2010-07-12 17:32:57 +00:00
Arun Thomas
1cee6fe95e Import asprintf() and vasprintf()
Ported from libnbcompat by Gautam Tirumala
2010-07-11 13:46:58 +00:00
Kees van Reeuwijk
a5dfadeb70 Let string.h include stdint.h, since some programs, in particular llvm/clang,
assume that this happens.
2010-07-09 23:58:37 +00:00
Cristiano Giuffrida
8427d774b6 RS live update support. 2010-07-09 18:29:04 +00:00
David van Moolenbroek
895850b8cf move timers code to libsys 2010-07-09 12:58:18 +00:00
Arun Thomas
f3ce085913 Pull in NetBSD's queue.h (for pkgsrc) 2010-07-07 14:17:25 +00:00
Cristiano Giuffrida
1f8dbed029 RS crash recovery support. 2010-07-06 22:05:21 +00:00
Ben Gras
f6f814cb02 include, kernel: minor fixes to make compiling and linking work with clang.
(fixing warnings)
2010-07-06 11:59:19 +00:00
Cristiano Giuffrida
3de6a807ce Configure settings for system services dynamically with the new service edit command. 2010-07-05 19:37:08 +00:00
Erik van der Kouwe
37325bd7c5 Make service ABI backwards compatible again 2010-07-03 05:02:59 +00:00
Cristiano Giuffrida
03f64ac97a Self update support in RS. 2010-07-01 18:48:25 +00:00
Erik van der Kouwe
b5ae3961bb Fix unintended changes in r7614 2010-07-01 11:56:02 +00:00
David van Moolenbroek
06a0260c3c PCI: add AHCI T3 and subclass values 2010-07-01 09:20:36 +00:00
David van Moolenbroek
2488cc6442 PCI: expose BAR sizes 2010-07-01 09:10:16 +00:00
Erik van der Kouwe
4690e8b015 Opps, forgot to svn add these files 2010-07-01 08:38:15 +00:00
Erik van der Kouwe
23284ee7bd User-space scheduling for system processes 2010-07-01 08:32:33 +00:00
Ben Gras
65be30daed libfetch - move fetch.3 to man and fetch.h to include 2010-07-01 00:05:48 +00:00
Ben Gras
098412be83 small fixes for pkgsrc by Buccapatnam Tirumala, Gautam. 2010-06-30 12:18:34 +00:00
Cristiano Giuffrida
06700d05d1 Give RS a page table. 2010-06-28 21:53:37 +00:00
Cristiano Giuffrida
869a223d43 service clone command to clone system services on demand. 2010-06-28 21:38:29 +00:00
Ben Gras
8379b08845 library function to retrieve kernel proc table and sanity check it 2010-06-28 11:05:15 +00:00
Ben Gras
aa6ff4c8be lib: setprogname() + getsubopt() 2010-06-26 00:44:24 +00:00
Arun Thomas
c0c8d25799 Rename mkfiles from minix.*.mk to bsd.*.mk
Makes things easier for pkgsrc
2010-06-25 18:29:09 +00:00
Kees van Reeuwijk
25dc0fc376 Some standard Unix functions were feature-dependent on _MINIX. 2010-06-24 14:17:25 +00:00
Erik van der Kouwe
498d7d8a4c Don't use kernel responses in servers 2010-06-24 07:37:26 +00:00
Ben Gras
fc01683584 include, vfs: statvfs, fstatvfs calls, contributed by Buccapatnam Tirumala, Gautam. 2010-06-23 23:53:50 +00:00
Ben Gras
79d62892ad includes: statvfs support, contributed by Buccapatnam Tirumala, Gautam 2010-06-23 23:46:10 +00:00
Ben Gras
24a5f48921 lib - a pwrite() implementation (Contributed by Buccapatnam Tirumala, Gautam) 2010-06-22 22:04:43 +00:00
Ben Gras
ddc3f62290 strptime() for minix. 2010-06-22 21:42:49 +00:00
Ben Gras
86e323da6b correct to S_IFSOCK 2010-06-22 16:35:48 +00:00
Ben Gras
575d055f90 rename __ss_family to ss_family. (Contributed by Buccapatnam Tirumala, Gautam) 2010-06-22 16:21:21 +00:00
Ben Gras
5946b9d41d includes: S_ISSOCK and S_ISOCK 2010-06-22 13:37:33 +00:00
Kees van Reeuwijk
3eed5d3bdb Sort out problems with POSIX constants. 2010-06-22 10:50:03 +00:00
Ben Gras
82dee9dbc3 add LC_MESSAGES 2010-06-22 09:31:16 +00:00
Ben Gras
3cb1096425 new stdbool.h 2010-06-22 09:30:52 +00:00
Ben Gras
4383596e9d includes: small fixes and additions to help compiling programs. 2010-06-22 09:30:26 +00:00
Ben Gras
d78494cd6e fgetln() prototype 2010-06-20 11:46:50 +00:00
Ben Gras
2144b289de getprogname(), setprogname() prototypes 2010-06-18 14:03:13 +00:00
Arun Thomas
042b5bf606 We have sys/cdefs.h now, so remove hacks. 2010-06-17 15:14:57 +00:00
Ben Gras
7b7091e905 zlib includes in lib/libz, install them too in /usr/include from toplevel makefile. 2010-06-17 15:05:20 +00:00
Ben Gras
ae947059e6 libraries, includes: libz: original libz source files with minix makefile. 2010-06-17 13:29:20 +00:00
Ben Gras
482afb8a6f <sys/mman.h>: include <minix/type.h> instead of <minix/types.h> for endpoint_t 2010-06-14 20:33:14 +00:00
David van Moolenbroek
eeab8e0680 libdriver: make partition code use a contiguous buffer 2010-06-13 10:40:22 +00:00
Arun Thomas
1bf6d23f34 Make exec() use entry point in a.out header 2010-06-10 14:59:10 +00:00
Arun Thomas
f0a158d8c1 More cleanup to remove MM and FS references 2010-06-10 14:04:46 +00:00
Ben Gras
ac34bfd42b inlcude: new prototypes 2010-06-09 12:53:09 +00:00
Ben Gras
e216edf294 unistd.h: add setmode() prototype. 2010-06-09 12:11:33 +00:00
Ben Gras
769302d3d6 err.h: include prototypes for new err* and warn* functions. 2010-06-09 12:11:13 +00:00
Ben Gras
d7490d374d includes: minix <util.h> 2010-06-09 12:03:19 +00:00
Ben Gras
b697b67d53 includes: original netbsd <util.h> 2010-06-09 12:02:20 +00:00
Thomas Veerman
a0eaaa5c9f Fix a bug in put_inode that causes corruption to the file system and another
bug that causes problems when files grow bigger than a certain threshold. Also
fix a few type and code inconsistencies.
2010-06-09 09:56:43 +00:00
Tomas Hruby
1207fcc6f0 int to endpoint_t conversions in mmap 2010-06-09 09:14:53 +00:00
Ben Gras
cccfe8e0ce lib: move tzfile.h from lib/libc/stdtime/ to include/ for general usage. 2010-06-08 19:11:42 +00:00
Kees van Reeuwijk
826b9590f2 More endpoint_t correctness.
More const correctness.
Other code cleanup.
2010-06-08 14:09:18 +00:00
Arun Thomas
4c10a31440 Remove legacy MM, FS, and FS_PROC_NR macros 2010-06-08 13:58:01 +00:00
Ben Gras
f448dfe063 version: trunk will become 3.1.8. 2010-06-07 15:57:14 +00:00
Ben Gras
035c5a369c move drivers/random SHA implementation to libutil and header to <minix/sha2.h> 2010-06-02 22:58:29 +00:00
Kees van Reeuwijk
36e12d5bd8 Use endpoint_t for the destination of mini_send and _syscall, and the
source of mini_receive.

Also some small cleanup.
2010-06-02 21:51:32 +00:00
Thomas Veerman
6bbcab3ec4 Clean up MFS a bit:
- Remove unused includes.
 - Add include guards to headers.
 - Use unsigned variables in case they're never going to hold a negative
   value. This causes GCC's complaints to disappear and should make flexelint
   a lot happier, too.
 - Make functions private when they're used only within a module.
 - Remove unused variables.
 - Add casts where appropriate.
2010-06-01 12:35:33 +00:00
Erik van der Kouwe
8bca982581 Remove those annoying $Id and $Revision tags 2010-05-31 20:00:08 +00:00
Thomas Veerman
5d78cefaf2 Clean up PFS 2010-05-28 09:39:18 +00:00
Erik van der Kouwe
43b589c1cc Avoid use of C++ reserved word class in headers (reported by Aki Goto, tracker item 375) 2010-05-27 08:48:53 +00:00
Arun Thomas
b48b037fbe Reorganize some directories
servers/hgfs/hgfs_server => servers/hgfs
servers/hgfs/libhgfs => lib/libhgfs
servers/rs/service => commands/service
drivers/memory/memory_driver => drivers/memory
drivers/memory/ramdisk => drivers/ramdisk
2010-05-26 22:49:57 +00:00
Tomas Hruby
a8111c5027 Various small scheduling related fixes 2010-05-26 07:16:39 +00:00
Tomas Hruby
451a6890d6 scheduling - time quantum in miliseconds
- Currently the cpu time quantum is timer-ticks based. Thus the
  remaining quantum is decreased only if the processes is interrupted
  by a timer tick. As processes block a lot this typically does not
  happen for normal user processes. Also the quantum depends on the
  frequency of the timer.

- This change makes the quantum miliseconds based. Internally the
  miliseconds are translated into cpu cycles. Everytime userspace
  execution is interrupted by kernel the cycles just consumed by the
  current process are deducted from the remaining quantum.

- It makes the quantum system timer frequency independent.

- The boot processes quantum is loosely derived from the tick-based
  quantas and 60Hz timer and subject to future change

- the 64bit arithmetics is a little ugly, will be changes once we have
  compiler support for 64bit integers (soon)
2010-05-25 08:06:14 +00:00
Erik van der Kouwe
1f11a57141 Oops, last commit included more than was intended 2010-05-20 08:07:47 +00:00
Erik van der Kouwe
5f15ec05b2 More system processes, this was not enough for the release script to run on some configurations 2010-05-20 08:05:07 +00:00
Tomas Hruby
b09bcf6779 Scheduling server (by Bjorn Swift)
In this second phase, scheduling is moved from PM to its own
scheduler (see r6557 for phase one). In the next phase we hope to a)
include useful information in the "out of quantum" message and b)
create some simple scheduling policy that makes use of that
information.

When the system starts up, PM will iterate over its process table and
ask SCHED to take over scheduling unprivileged processes. This is
done by sending a SCHEDULING_START message to SCHED. This message
includes the processes endpoint, the parent's endpoint and its nice
level. The scheduler adds this process to its schedproc table, issues
a schedctl, and returns its own endpoint to PM - as the endpoint of
the effective scheduler. When a process terminates, a SCHEDULING_STOP
message is sent to the scheduler.

The reason for this effective endpoint is for future compatibility.
Some day, we may have a scheduler that, instead of scheduling the
process itself, forwards the SCHEDULING_START message on to another
scheduler.

PM has information on who schedules whom. As such, scheduling
messages from user-land are sent through PM. An example is when
processes change their priority, using nice(). In that case, a
getsetpriority message is sent to PM, which then sends a
SCHEDULING_SET_NICE to the process's effective scheduler.

When a process is forked through PM, it inherits its parent's
scheduler, but is spawned with an empty quantum. As before, a request
to fork a process flows through VM before returning to PM, which then
wakes up the child process. This flow has been modified slightly so
that PM notifies the scheduler of the new process, before waking up
the child process. If the scheduler fails to take over scheduling,
the child process is torn down and the fork fails with an erroneous
value.

Process priority is entirely decided upon using nice levels. PM
stores a copy of each process's nice level and when a child is
forked, its parent's nice level is sent in the SCHEDULING_START
message. How this level is mapped to a priority queue is up to the
scheduler. It should be noted that the nice level is used to
determine the max_priority and the parent could have been in a lower
priority when it was spawned. To prevent a CPU intensive process from
hawking the CPU by continuously forking children that get scheduled
in the max_priority, the scheduler should determine in which queue
the parent is currently scheduled, and schedule the child in that
same queue.

Other fixes: The USER_Q in kernel/proc.h was incorrectly defined as
NR_SCHED_QUEUES/2. That results in a "off by one" error when
converting priority->nice->priority for nice=0. This also had the
side effect that if someone were to set the MAX_USER_Q to something
else than 0, then USER_Q would be off.
2010-05-18 13:39:04 +00:00
David van Moolenbroek
9ba65d2ea8 This patch switches the MINIX3 ethernet driver stack from a port-based
model to an instance-based model. Each ethernet driver instance is now
responsible for exactly one network interface card. The port field in
/etc/inet.conf now acts as an instance field instead.

This patch also updates the data link protocol. This update:
- eliminates the concept of ports entirely;
- eliminates DL_GETNAME entirely;
- standardizes on using m_source for IPC and DL_ENDPT for safecopies;
- removes error codes from TASK/STAT replies, as they were unused;
- removes a number of other old or unused fields;
- names and renames a few other fields.

All ethernet drivers have been changed to:
- conform to the new protocol, and exactly that;
- take on an instance number based on a given "instance" argument;
- skip that number of PCI devices in probe iterations;
- use config tables and environment variables based on that number;
- no longer be limited to a predefined maximum of cards in any way;
- get rid of any leftover non-safecopy support and other ancient junk;
- have a correct banner protocol figure, or none at all.

Other changes:
* Inet.conf is now taken to be line-based, and supports #-comments.
  No existing installations are expected to be affected by this.
* A new, select-based asynchio library replaces the old one.
  Kindly contributed by Kees J. Bot.
* Inet now supports use of select() on IP devices.
  Combined, the last two changes together speed up dhcpd
  considerably in the presence of multiple interfaces.
* A small bug has been fixed in nonamed.
2010-05-17 22:22:53 +00:00
Erik van der Kouwe
7570df267f Full 64-bit multitplication and division added to u64 library 2010-05-17 16:44:26 +00:00
Arun Thomas
5706670029 Convert boot/ and commands/ over to bsdmake 2010-05-12 16:28:54 +00:00
Ben Gras
c5c25e7abc kernel/vm: change pde table info from single buffer to explicit per-process.
makes code in kernel more readable, and allows better sanity checking on
using the pde info.
2010-05-12 08:31:05 +00:00
Erik van der Kouwe
b7bf2733d6 Intermediate boot verbosity level EXTRA (2), MAX moved to 3 2010-05-10 18:07:59 +00:00
Tomas Hruby
5c63cac05a Removed defines not used since r6844. 2010-05-10 13:29:04 +00:00
Tomas Hruby
6e25ad8b0a Use of all NIL_* defines converted to NULL 2010-05-10 13:26:00 +00:00
Ben Gras
f78d8e74fd secondary cache feature in vm.
A new call to vm lets processes yield a part of their memory to vm,
together with an id, getting newly allocated memory in return. vm is
allowed to forget about it if it runs out of memory. processes can ask
for it back using the same id. (These two operations are normally
combined in a single call.)

It can be used as a as-big-as-memory-will-allow block cache for
filesystems, which is how mfs now uses it.
2010-05-05 11:35:04 +00:00
Ben Gras
029e809780 driver.h: increase max no. of open minors. 2010-05-03 19:43:54 +00:00
Erik van der Kouwe
4b34ff6903 Add syslib function to obtain CPU frequency 2010-05-03 19:41:04 +00:00
Ben Gras
99a13341bd cpufeature() - rename _SSEx and correct logic in cpufeature() in lib 2010-04-29 19:08:49 +00:00
Cristiano Giuffrida
0164957abb Unified crash recovery and live update.
RS CHANGES:
- Crash recovery is now implemented like live update. Two instances are kept
side by side and the dead version is live updated into the new one. The endpoint
doesn't change and the failure is not exposed (by default) to other system
services.
- The new instance can be created reactively (when a crash is detected) or
proactively. In the latter case, RS can be instructed to keep a replica of
the system service to perform a hot swap when the service fails. The flag
SF_USE_REPL is set in that case.
- The new flag SF_USE_REPL is supported for services in the boot image and
dynamically started services through the RS interface (i.e. -p option in the
service utility).
- Fixed a free unallocated memory bug for core system services.
2010-04-27 11:17:30 +00:00
Tomas Hruby
30798fc3e1 Removed unused prototype 2010-04-26 23:39:05 +00:00
Tomas Hruby
f51eea4b32 Changed pagefault delivery to VM
this patch changes the way pagefaults are delivered to VM. It adopts
the same model as the out-of-quantum messages sent by kernel to a
scheduler.

- everytime a userspace pagefault occurs, kernel creates a message
  which is sent to VM on behalf of the faulting process

- the process is blocked on delivery to VM in the standard IPC code
  instead of waiting in a spacial in-kernel queue (stack) and is not
  runnable until VM tell kernel that the pagefault is resolved and is
  free to clear the RTS_PAGEFAULT flag.

- VM does not need call kernel and poll the pagefault information
  which saves many (1/2?) calls and kernel calls that return "no more
  data"

- VM notification by kernel does not need to use signals

- each entry in proc table is by 12 bytes smaller (~3k save)
2010-04-26 23:21:26 +00:00
Kees van Reeuwijk
86a23c1fbd Remove U16_t and most other similar types. Rewrite functions to ansi-style
declaration if necessary.
2010-04-21 11:05:22 +00:00
Kees van Reeuwijk
8a304627a3 Forgot to add two new files to SVN. 2010-04-20 07:17:03 +00:00
Kees van Reeuwijk
e85f78a20b Add some support for wchar_t. 2010-04-19 15:20:24 +00:00
Erik van der Kouwe
7de730afe4 Add scancode reading capability to TTY 2010-04-15 06:55:42 +00:00
Kees van Reeuwijk
8005ac2c64 Add timerisclear() macro. 2010-04-14 17:51:39 +00:00
Kees van Reeuwijk
fa3adedf63 Remove some duplicate declarations in headers.
Explicitly declare some functions as returning void.
2010-04-13 15:22:38 +00:00
Kees van Reeuwijk
bc314bda91 Remove the types Dev_t, _mnx_Gui, _mnx_Uid, and similar.
Use ANSI-style function declarations where necessary.
2010-04-13 10:58:41 +00:00
Cristiano Giuffrida
65ef539739 Driver mapping refactory.
VFS CHANGES:
- dmap table no longer statically initialized in VFS
- Dropped FSSIGNON svrctl call no longer used by INET

INET CHANGES:
- INET announces its presence to VFS just like any other driver

RS CHANGES:
- The boot image dev table contains all the data to initialize VFS' dmap table
- RS interface supports asynchronous up and update operations now
- RS interface extended to support driver style and flags
2010-04-09 21:56:44 +00:00
Ben Gras
1c8c8aa4d8 isblank() implementation. 2010-04-08 15:00:25 +00:00
Cristiano Giuffrida
48c6bb79f4 Driver refactory for live update and crash recovery.
SYSLIB CHANGES:
- DS calls to publish / retrieve labels consider endpoints instead of u32_t.

VFS CHANGES:
- mapdriver() only adds an entry in the dmap table in VFS.
- dev_up() is only executed upon reception of a driver up event.

INET CHANGES:
- INET no longer searches for existing drivers instances at startup.
- A newtwork driver is (re)initialized upon reception of a driver up event.
- Networking startup is now race-free by design. No need to waste 5 seconds
at startup any more.

DRIVER CHANGES:
- Every driver publishes driver up events when starting for the first time or
in case of restart when recovery actions must be taken in the upper layers.
- Driver up events are published by drivers through DS. 
- For regular drivers, VFS is normally the only subscriber, but not necessarily.
For instance, when the filter driver is in use, it must subscribe to driver
up events to initiate recovery.
- For network drivers, inet is the only subscriber for now.
- Every VFS driver is statically linked with libdriver, every network driver
is statically linked with libnetdriver.

DRIVER LIBRARIES CHANGES:
- Libdriver is extended to provide generic receive() and ds_publish() interfaces
for VFS drivers.
- driver_receive() is a wrapper for sef_receive() also used in driver_task()
to discard spurious messages that were meant to be delivered to a previous
version of the driver.
- driver_receive_mq() is the same as driver_receive() but integrates support
for queued messages.
- driver_announce() publishes a driver up event for VFS drivers and marks
the driver as initialized and expecting a DEV_OPEN message.
- Libnetdriver is introduced to provide similar receive() and ds_publish()
interfaces for network drivers (netdriver_announce() and netdriver_receive()).
- Network drivers all support live update with no state transfer now.

KERNEL CHANGES:
- Added kernel call statectl for state management. Used by driver_announce() to
unblock eventual callers sendrecing to the driver.
2010-04-08 13:41:35 +00:00
Kees van Reeuwijk
c114df82ec Rename all uses of U8_t to u8_t and remove U8_t, remove unused I8_t,
Remove all uses of U16_t and U32_t in pci-related code.
If necessary to avoid problems, change functions to ansi-style declaration.
2010-04-07 13:35:56 +00:00
Cristiano Giuffrida
d8b42a755d Move kernel signal SIGKNDELAY to system signal SIGSNDELAY and fix broken ptrace. 2010-03-31 08:55:12 +00:00
Lorenzo Cavallaro
8dfc7699a6 cdecl calling convention requires to push arguments on the stack in a
reverse order to easily support variadic arguments. Thus, instead of
using the proper stdarg.h macros (that nowadays are
compiler-dependent), it may be tempting to directly take the address of
the last argument and considering it as the start of an array. This is
a shortcut that avoid looping to get all the arguments as the CPU
already pushed them on the stack before the call to the function.

Unfortunately, such an assumption is strictly compiler-dependent and
compilers are free to move the last argument on the stack, as a local
variable, and return the address of the location where the argument was
stored, if asked for. This will break things as the rest of the array's
argument are stored elsewhere (typically, a couple of words above the
location where the argument was stored).

This patch fixes the issue by allowing ACK to take the shortcut and
enabling gcc/llvm-gcc to follow the right way.
2010-03-30 09:36:46 +00:00
Tomas Hruby
63e2d73d1b Fixed brackets in bitmap macros 2010-03-30 08:34:33 +00:00
Tomas Hruby
5b52c5aa02 A reliable way for userspace to check if a msg is from kernel
- IPC_FLG_MSG_FROM_KERNEL status flag is returned to userspace if the
  receive was satisfied by s message which was sent by the kernel on
  behalf of a process. This perfectly reliale information.

- MF_SENDING_FROM_KERNEL flag added to processes to be able to set
  IPC_FLG_MSG_FROM_KERNEL when finishing receive if the receiver
  wasn't ready to receive immediately.

- PM is changed to use this information to confirm that the scheduling
  messages are indeed from the kernel and not faked by a process.

  PM uses sef_receive_status()

- get_work() is removed from PM to make the changes simpler
2010-03-29 11:25:01 +00:00
Tomas Hruby
b4cf88a04f Userspace scheduling
- cotributed by Bjorn Swift

- In this first phase, scheduling is moved from the kernel to the PM
  server. The next steps are to a) moving scheduling to its own server
  and b) include useful information in the "out of quantum" message,
  so that the scheduler can make use of this information.

- The kernel process table now keeps record of who is responsible for
  scheduling each process (p_scheduler). When this pointer is NULL,
  the process will be scheduled by the kernel. If such a process runs
  out of quantum, the kernel will simply renew its quantum an requeue
  it.

- When PM loads, it will take over scheduling of all running
  processes, except system processes, using sys_schedctl().
  Essentially, this only results in taking over init. As children
  inherit a scheduler from their parent, user space programs forked by
  init will inherit PM (for now) as their scheduler.

 - Once a process has been assigned a scheduler, and runs out of
   quantum, its RTS_NO_QUANTUM flag will be set and the process
   dequeued. The kernel will send a message to the scheduler, on the
   process' behalf, informing the scheduler that it has run out of
   quantum. The scheduler can take what ever action it pleases, based
   on its policy, and then reschedule the process using the
   sys_schedule() system call.

- Balance queues does not work as before. While the old in-kernel
  function used to renew the quantum of processes in the highest
  priority run queue, the user-space implementation only acts on
  processes that have been bumped down to a lower priority queue.
  This approach reacts slower to changes than the old one, but saves
  us sending a sys_schedule message for each process every time we
  balance the queues. Currently, when processes are moved up a
  priority queue, their quantum is also renewed, but this can be
  fiddled with.

- do_nice has been removed from kernel. PM answers to get- and
  setpriority calls, updates it's own nice variable as well as the
  max_run_queue. This will be refactored once scheduling is moved to a
  separate server. We will probably have PM update it's local nice
  value and then send a message to whoever is scheduling the process.

- changes to fix an issue in do_fork() where processes could run out
  of quantum but bypassing the code path that handles it correctly.
  The future plan is to remove the policy from do_fork() and implement
  it in userspace too.
2010-03-29 11:07:20 +00:00
Lorenzo Cavallaro
a16308efdb cdecl calling convention expects the callee to pop the hidden pointer on
struct return. For example, GCC and LLVM comply with this (tested on IA32).

ACK doesn't seem to follow this convention and expects the caller to clean up
the stack. Compiling hand-written ACK-compliant assembly code (returning a 
struct) with GCC or LLVM used to break things (4-bytes misaligned stack).

The patch fixes this problem.
2010-03-24 17:25:17 +00:00
Kees van Reeuwijk
407316e451 More const correctness.
Removed prototype for unimplemented getpgid() function.
Removed a value return from a void function.
2010-03-23 14:25:09 +00:00
Cristiano Giuffrida
bde2109b7c IPC status code for receive().
IPC changes:
- receive() is changed to take an additional parameter, which is a pointer to
a status code.
- The status code is filled in by the kernel to provide additional information
to the caller. For now, the kernel only fills in the IPC call used by the
sender.

Syslib changes:
- sef_receive() has been split into sef_receive() (with the original semantics)
and sef_receive_status() which exposes the status code to userland.
- Ideally, every sys process should gradually switch to sef_receive_status()
and use is_ipc_notify() as a dependable way to check for notify.
- SEF has been modified to use is_ipc_notify() and demonstrate how to use the
new status code.
2010-03-23 00:09:11 +00:00
Cristiano Giuffrida
ef95bf1bb9 Print stacktrace when a system service fails or when a core dump has to be generated for a user process. 2010-03-22 22:46:29 +00:00
Arun Thomas
436d6012a3 Convert drivers/ and servers/ over to bsdmake
-Move libdriver to lib/
-Install all boot image services on filesystem to aid restartability
2010-03-22 21:25:22 +00:00
Tomas Hruby
12ef495cac atomicity fix when enabling paging
- before enabling paging VM asks kernel to resize its segments. This
  may cause kernel to segfault if APIC is used and an interrupt
  happens between this and paging enabled. As these are 2 separate
  vmctl calls it is not atomic. This patch fixes this problem. VM does
  not ask kernel to resize the segments in a separate call anymore.
  The new segments limit is part of the "enable paging" call. It
  generalizes this call in such a way that more information can be
  passed as need be or the information may be completely different if
  another architecture requires this.
2010-03-22 07:42:52 +00:00
Kees van Reeuwijk
4432f197c1 Add a define for NSIG. 2010-03-17 13:43:34 +00:00
Cristiano Giuffrida
cb176df60f New RS and new signal handling for system processes.
UPDATING INFO:
20100317:
        /usr/src/etc/system.conf updated to ignore default kernel calls: copy
        it (or merge it) to /etc/system.conf.
        The hello driver (/dev/hello) added to the distribution:
        # cd /usr/src/commands/scripts && make clean install
        # cd /dev && MAKEDEV hello

KERNEL CHANGES:
- Generic signal handling support. The kernel no longer assumes PM as a signal
manager for every process. The signal manager of a given process can now be
specified in its privilege slot. When a signal has to be delivered, the kernel
performs the lookup and forwards the signal to the appropriate signal manager.
PM is the default signal manager for user processes, RS is the default signal
manager for system processes. To enable ptrace()ing for system processes, it
is sufficient to change the default signal manager to PM. This will temporarily
disable crash recovery, though.
- sys_exit() is now split into sys_exit() (i.e. exit() for system processes,
which generates a self-termination signal), and sys_clear() (i.e. used by PM
to ask the kernel to clear a process slot when a process exits).
- Added a new kernel call (i.e. sys_update()) to swap two process slots and
implement live update.

PM CHANGES:
- Posix signal handling is no longer allowed for system processes. System
signals are split into two fixed categories: termination and non-termination
signals. When a non-termination signaled is processed, PM transforms the signal
into an IPC message and delivers the message to the system process. When a
termination signal is processed, PM terminates the process.
- PM no longer assumes itself as the signal manager for system processes. It now
makes sure that every system signal goes through the kernel before being
actually processes. The kernel will then dispatch the signal to the appropriate
signal manager which may or may not be PM.

SYSLIB CHANGES:
- Simplified SEF init and LU callbacks.
- Added additional predefined SEF callbacks to debug crash recovery and
live update.
- Fixed a temporary ack in the SEF init protocol. SEF init reply is now
completely synchronous.
- Added SEF signal event type to provide a uniform interface for system
processes to deal with signals. A sef_cb_signal_handler() callback is
available for system processes to handle every received signal. A
sef_cb_signal_manager() callback is used by signal managers to process
system signals on behalf of the kernel.
- Fixed a few bugs with memory mapping and DS.

VM CHANGES:
- Page faults and memory requests coming from the kernel are now implemented
using signals.
- Added a new VM call to swap two process slots and implement live update.
- The call is used by RS at update time and in turn invokes the kernel call
sys_update().

RS CHANGES:
- RS has been reworked with a better functional decomposition.
- Better kernel call masks. com.h now defines the set of very basic kernel calls
every system service is allowed to use. This makes system.conf simpler and
easier to maintain. In addition, this guarantees a higher level of isolation
for system libraries that use one or more kernel calls internally (e.g. printf).
- RS is the default signal manager for system processes. By default, RS
intercepts every signal delivered to every system process. This makes crash
recovery possible before bringing PM and friends in the loop.
- RS now supports fast rollback when something goes wrong while initializing
the new version during a live update.
- Live update is now implemented by keeping the two versions side-by-side and
swapping the process slots when the old version is ready to update.
- Crash recovery is now implemented by keeping the two versions side-by-side
and cleaning up the old version only when the recovery process is complete.

DS CHANGES:
- Fixed a bug when the process doing ds_publish() or ds_delete() is not known
by DS.
- Fixed the completely broken support for strings. String publishing is now
implemented in the system library and simply wraps publishing of memory ranges.
Ideally, we should adopt a similar approach for other data types as well.
- Test suite fixed.

DRIVER CHANGES:
- The hello driver has been added to the Minix distribution to demonstrate basic
live update and crash recovery functionalities.
- Other drivers have been adapted to conform the new SEF interface.
2010-03-17 01:15:29 +00:00
Kees van Reeuwijk
d89e33fc92 Suppressed some warnings in the WIFSIGNALED macro. 2010-03-15 18:33:29 +00:00
Thomas Veerman
bef0e3eb63 - Add support for the ucontext system calls (getcontext, setcontext,
swapcontext, and makecontext).
- Fix VM to not erroneously think the stack segment and data segment have
  collided when a user-space thread invokes brk().
- Add test51 to test ucontext functionality.
- Add man pages for ucontext system calls.
2010-03-12 15:58:41 +00:00
Kees van Reeuwijk
23e97af1b4 Add an UNUSED annotation, and use it in libsys. 2010-03-11 14:23:33 +00:00
Kees van Reeuwijk
88ac328e6b Add prototypes for a bunch of time-related functions. Surprisingly,
they were in the implementation, but not in the header files.
2010-03-09 22:10:58 +00:00
Kees van Reeuwijk
a34d34bc1f Add a set of declarations to math.h. Since we don't actually have
implementations for these functions, we lean on GNU builtin functions
for using them, so these declarations are also conditional on using
a GNU compiler.
2010-03-09 22:05:20 +00:00
Arun Thomas
1f9ce647cf Move archtypes.h, fpu.h, and stackframe.h
Move archtypes.h to include/ dir, since several servers require it. Move
fpu.h and stackframe.h to arch-specific header directory. Make source
files and makefiles aware of the new header locations.
2010-03-09 09:41:14 +00:00
Arun Thomas
2a8fabf4ad Include directory reorg and makefile updates.
-Convert the include directory over to using bsdmake
 syntax
-Update/add mkfiles
-Modify install(1) so that it can create symlinks
-Update makefiles to use new install(1) options
-Rename /usr/include/ibm to /usr/include/i386
-Create /usr/include/machine symlink to arch header files
-Move vm_i386.h to its new home in the /usr/include/i386
-Update source files to #include the header files at their
 new homes.
-Add new gnu-includes target for building GCC headers
2010-03-08 11:04:59 +00:00
Ben Gras
35a108b911 panic() cleanup.
this change
   - makes panic() variadic, doing full printf() formatting -
     no more NO_NUM, and no more separate printf() statements
     needed to print extra info (or something in hex) before panicing
   - unifies panic() - same panic() name and usage for everyone -
     vm, kernel and rest have different names/syntax currently
     in order to implement their own luxuries, but no longer
   - throws out the 1st argument, to make source less noisy.
     the panic() in syslib retrieves the server name from the kernel
     so it should be clear enough who is panicing; e.g.
         panic("sigaction failed: %d", errno);
     looks like:
         at_wini(73130): panic: sigaction failed: 0
         syslib:panic.c: stacktrace: 0x74dc 0x2025 0x100a
   - throws out report() - printf() is more convenient and powerful
   - harmonizes/fixes the use of panic() - there were a few places
     that used printf-style formatting (didn't work) and newlines
     (messes up the formatting) in panic()
   - throws out a few per-server panic() functions
   - cleans up a tie-in of tty with panic()

merging printf() and panic() statements to be done incrementally.
2010-03-05 15:05:11 +00:00
Kees van Reeuwijk
851dc95566 Move cp_grant_id_t to a more central header file, and uses it more
extensively.
Fix casts that cast the grand id field of some messages to the wrong
type.
2010-03-04 16:15:26 +00:00
Ben Gras
adf0b6fb26 No more E{SRC,DST}DIED errno's, replaced by EDEADSRCDST.
The callers don't care about the difference and had to check 3 error
codes instead of one.
2010-03-03 15:47:16 +00:00
Kees van Reeuwijk
bf7397b64e More correctly use cp_grant_id_t.
More correctly use vir_bytes.
More correctly use endpoint_t.
2010-03-02 23:12:13 +00:00
Erik van der Kouwe
6b867ec05c #include <minix/ipc.h> in <minix/sef.h> 2010-02-26 10:13:50 +00:00
Erik van der Kouwe
2a67e38d88 #include <minix/ipc.h> in <minix/sef.h> 2010-02-26 10:12:54 +00:00
Ben Gras
7c4cd0e6b0 - new pread(), fnmatch() calls
- split sprintf() and snprintf() to solve a linking problem when
   compiling an application
2010-02-25 17:08:08 +00:00
Kees van Reeuwijk
1ce69592d2 Fixed an array bounds violation.
Let include guards comform to the Minix standard.
2010-02-24 10:39:58 +00:00
Kees van Reeuwijk
3922d45719 Fix an array-bound violation, add some include guards. 2010-02-22 17:44:08 +00:00
Arun Thomas
1e9a3c1423 Bump version number to 3.1.7 2010-02-17 12:51:26 +00:00
Erik van der Kouwe
5af2471a9a Throw out obsolete Atari, Macintosh and Sun code to un-break packages;
credits to Sernin van de Krol's zip-2.31 patch for showing this problem
2010-02-16 19:19:42 +00:00
Kees van Reeuwijk
6686e9ae9f The function fabsf should return a float, not a double. 2010-02-15 14:25:33 +00:00
Erik van der Kouwe
ff835e0e35 use the verbose=2 boot monitor setting to get extensive output for debugging 2010-02-13 22:11:16 +00:00
Ben Gras
f08f2bd88c new free_contig() and changes to make drivers use it; so now we
have malloc/free, alloc_contig/free_contig and mmap/munmap nicely
paired up.

memory uses malloc/free instead of mmap/munmap as it doesn't have
to be contiguous for the ramdisks (and it might help if it doesn't!).
2010-02-10 13:56:26 +00:00
Tomas Hruby
391fd926ff TASK_PRIVILEGE and level0() removed
- there are no tasks running, we don't need TASK_PRIVILEGE priviledge anymore

- as there is no ring 1 anymore, there is no need for level0() to call sensitive
  code from ring 1 in ring 0

- 286 related macros removed as clean up
2010-02-09 15:23:31 +00:00
Tomas Hruby
728f0f0c49 Removal of the system task
* Userspace change to use the new kernel calls

	- _taskcall(SYSTASK...) changed to _kernel_call(...)

	- int 32 reused for the kernel calls

	- _do_kernel_call() to make the trap to kernel

	- kernel_call() to make the actuall kernel call from C using
	  _do_kernel_call()

	- unlike ipc call the kernel call always succeeds as kernel is
	  always available, however, kernel may return an error

* Kernel side implementation of kernel calls

	- the SYSTEm task does not run, only the proc table entry is
	  preserved

	- every data_copy(SYSTEM is no data_copy(KERNEL

	- "locking" is an empty operation now as everything runs in
	  kernel

	- sys_task() is replaced by kernel_call() which copies the
	  message into kernel, dispatches the call to its handler and
	  finishes by either copying the results back to userspace (if
	  need be) or by suspending the process because of VM

	- suspended processes are later made runnable once the memory
	  issue is resolved, picked up by the scheduler and only at
	  this time the call is resumed (in fact restarted) which does
	  not need to copy the message from userspace as the message
	  is already saved in the process structure.

	- no ned for the vmrestart queue, the scheduler will restart
	  the system calls

	- no special case in do_vmctl(), all requests remove the
	  RTS_VMREQUEST flag
2010-02-09 15:20:09 +00:00
David van Moolenbroek
448f4305e2 a.out.h typo (Bug#398, reported by 7shi) 2010-02-07 12:01:37 +00:00
Arun Thomas
4b02d003db Import NetBSD's make 2010-02-04 16:52:54 +00:00
Ben Gras
35b471ad94 removal of unused vm<->vfs code. 2010-02-03 13:35:17 +00:00
Erik van der Kouwe
6959226707 Increase process table size 2010-01-27 18:37:12 +00:00
Ben Gras
75a3d4ebde bump version number to 3.1.6, copyright year to 2010. 2010-01-27 16:19:50 +00:00
David van Moolenbroek
4c2cb6c04f typo 2010-01-25 21:06:07 +00:00
Erik van der Kouwe
ff416204c5 Add dirname function, forgot to commit header before 2010-01-25 18:17:57 +00:00
Erik van der Kouwe
eeaecf1d9c Explicitly mark i8_t as signed 2010-01-25 18:17:04 +00:00
Erik van der Kouwe
f8804c0240 Additions to inttypes.h format strings 2010-01-25 18:16:25 +00:00
Erik van der Kouwe
0e564a1419 Add IPv6-related header definitions 2010-01-25 18:13:23 +00:00
Erik van der Kouwe
a89d141e90 Add getopt_long library function 2010-01-25 18:11:21 +00:00
Erik van der Kouwe
a39cb73e58 IPv6 address family and protocol familyconstants 2010-01-22 10:45:43 +00:00
Erik van der Kouwe
4dfe5f49ba Make int64 constants available under GCC 2010-01-22 10:45:05 +00:00
Erik van der Kouwe
0bc2aad4af Fix parameter parsing in cut 2010-01-21 10:16:05 +00:00
Thomas Veerman
ca9280e097 - Fix dangling symlink regression
- Make open(2) more POSIX compliant
- Add a test case for dangling symlinks and open() syscall with O_CREAT and
  O_EXCL on a symlink.
- Update open(2) man page to reflect change.
2010-01-21 09:32:15 +00:00
Erik van der Kouwe
a5a2073680 create the getaddrinfo and getnameinfo library functions and friends 2010-01-21 06:38:17 +00:00
Erik van der Kouwe
850f392c86 Fix typo in ENOPSUP definition 2010-01-20 16:36:48 +00:00
David van Moolenbroek
53a6e039de remove SYS_MAPDMA 2010-01-19 21:24:42 +00:00
David van Moolenbroek
f175410902 rename message.m5_c[12] to m5_s[12] 2010-01-19 21:19:59 +00:00
David van Moolenbroek
61bb82a44b VM information interface 2010-01-19 21:00:20 +00:00
Erik van der Kouwe
32ad26e698 Use _POSIX_SOURCE rather than _MINIX to protect popen, pclose and snprintf 2010-01-18 18:06:43 +00:00
Tomas Hruby
80d671aea7 _cpuid() - full cpuid instruction wrapper
- the prototype changes to 

	_cpuid(u32_t *eax, u32_t *ebx, u32_t *ecx, u32_t *edx)

- this makes possible to use all the features of the cpuid instruction as
  described in the Intel specs
2010-01-15 15:23:57 +00:00
Cristiano Giuffrida
c5b309ff07 Merge of Wu's GSOC 09 branch (src.20090525.r4372.wu)
Main changes:
- COW optimization for safecopy.
- safemap, a grant-based interface for sharing memory regions between processes.
- Integration with safemap and complete rework of DS, supporting new data types
  natively (labels, memory ranges, memory mapped ranges).
- For further information:
  http://wiki.minix3.org/en/SummerOfCode2009/MemoryGrants

Additional changes not included in the original Wu's branch:
- Fixed unhandled case in VM when using COW optimization for safecopy in case
  of a block that has already been shared as SMAP.
- Better interface and naming scheme for sys_saferevmap and ds_retrieve_map
  calls.
- Better input checking in syslib: check for page alignment when creating
  memory mapping grants.
- DS notifies subscribers when an entry is deleted.
- Documented the behavior of indirect grants in case of memory mapping.
- Test suite in /usr/src/test/safeperf|safecopy|safemap|ds/* reworked
  and extended.
- Minor fixes and general cleanup.
- TO-DO: Grant ids should be generated and managed the way endpoints are to make
sure grant slots are never misreused.
2010-01-14 15:24:16 +00:00
David van Moolenbroek
6a5660a431 PCI: add 64-bit BAR support 2010-01-13 10:52:47 +00:00
David van Moolenbroek
b31119abf5 Mount updates:
- allow mounting with "none" block device
- allow unmounting by mountpoint
- make VFS aware of file system process labels
- allow m3_ca1 to use the full available message size
- use *printf in u/mount(1), as mount(2) uses it already
- fix reference leaks for some mount error cases in VFS
2010-01-12 23:08:50 +00:00
Erik van der Kouwe
f025e5f06b Implementations of readv and writev 2010-01-08 13:40:34 +00:00
Erik van der Kouwe
aec561acc5 Add scalbn family of functions 2010-01-08 07:27:54 +00:00
Erik van der Kouwe
17b10f1bf3 Add fabsf function 2010-01-08 07:27:11 +00:00
Cristiano Giuffrida
d1fd04e72a Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.

SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic 
registration / deregistration of system services.

VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.

RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 01:20:42 +00:00
Erik van der Kouwe
aac4b7923f Add ENOTSUP error code 2010-01-07 09:53:31 +00:00
David van Moolenbroek
ac9ab099c8 General cleanup:
- clean up kernel section of minix/com.h somewhat
- remove ALLOCMEM and VM_ALLOCMEM calls
- remove non-safecopy and minix-vmd support from Inet
- remove SYS_VIRVCOPY and SYS_PHYSVCOPY calls
- remove obsolete segment encoding in SYS_SAFECOPY*
- remove DEVCTL call, svrctl(FSDEVUNMAP), map_driverX
- remove declarations of unimplemented svrctl requests
- remove everything related to swapping to disk
- remove floppysetup.sh
- remove traces of rescue device
- update DESCRIBE.sh with new devices
- some other small changes
2010-01-05 19:39:27 +00:00
David van Moolenbroek
0dcf5b7aa8 add ptrace(2) TO_NOEXEC flag 2010-01-05 09:30:28 +00:00
Erik van der Kouwe
c42de8045f Added EILSEQ, based on newsgroup post by Leith 2009-12-31 11:48:08 +00:00
David van Moolenbroek
e423c86009 ptrace(2) modifications:
- add T_GETRANGE/T_SETRANGE to get/set ranges of values
- change EIO error code to EFAULT
- move common-I&D text-to-data translation to umap_local
2009-12-29 21:32:15 +00:00
Erik van der Kouwe
6dc5d42798 Floating point support functions 2009-12-24 20:22:41 +00:00
Cristiano Giuffrida
1f5841c8ed Basic System Event Framework (SEF) with ping and live update.
SYSLIB CHANGES:
- SEF must be used by every system process and is thereby part of the system
library.
- The framework provides a receive() interface (sef_receive) for system
processes to automatically catch known system even messages and process them.
- SEF provides a default behavior for each type of system event, but allows
system processes to register callbacks to override the default behavior.
- Custom (local to the process) or predefined (provided by SEF) callback
implementations can be registered to SEF.
- SEF currently includes support for 2 types of system events:
  1. SEF Ping. The event occurs every time RS sends a ping to figure out
  whether a system process is still alive. The default callback implementation
  provided by SEF is to notify RS back to let it know the process is alive
  and kicking.
  2. SEF Live update. The event occurs every time RS sends a prepare to update
  message to let a system process know an update is available and to prepare
  for it. The live update support is very basic for now. SEF only deals with
  verifying if the prepare state can be supported by the process, dumping the
  state for debugging purposes, and providing an event-driven programming
  model to the process to react to state changes check-in when ready to update.
- SEF should be extended in the future to integrate support for more types of
system events. Ideally, all the cross-cutting concerns should be integrated into
SEF to avoid duplicating code and ease extensibility. Examples include:
  * PM notify messages primarily used at shutdown.
  * SYSTEM notify messages primarily used for signals.
  * CLOCK notify messages used for system alarms.
  * Debug messages. IS could still be in charge of fkey handling but would
  forward the debug message to the target process (e.g. PM, if the user
  requested debug information about PM). SEF would then catch the message and
  do nothing unless the process has registered an appropriate callback to
  deal with the event. This simplifies the programming model to print debug
  information, avoids duplicating code, and reduces the effort to print
  debug information.

SYSTEM PROCESSES CHANGES:
- Every system process registers SEF callbacks it needs to override the default
system behavior and calls sef_startup() right after being started.
- sef_startup() does almost nothing now, but will be extended in the future to
support callbacks of its own to let RS control and synchronize with every
system process at initialization time.
- Every system process calls sef_receive() now rather than receive() directly,
to let SEF handle predefined system events.

RS CHANGES:
- RS supports a basic single-component live update protocol now, as follows:
  * When an update command is issued (via "service update *"), RS notifies the
  target system process to prepare for a specific update state.
  * If the process doesn't respond back in time, the update is aborted.
  * When the process responds back, RS kills it and marks it for refreshing.
  * The process is then automatically restarted as for a buggy process and can
  start running again.
  * Live update is currently prototyped as a controlled failure.
2009-12-21 14:12:21 +00:00
Thomas Veerman
958b25be50 - Introduce support for sticky bit.
- Revise VFS-FS protocol and update VFS/MFS/ISOFS accordingly.
- Clean up MFS by removing old, dead code (backwards compatibility is broken by
  the new VFS-FS protocol, anyway) and rewrite other parts. Also, make sure all
  functions have proper banners and prototypes.
- VFS should always provide a (syntactically) valid path to the FS; no need for
  the FS to do sanity checks when leaving/entering mount points.
- Fix several bugs in MFS:
  - Several path lookup bugs in MFS.
  - A link can be too big for the path buffer.
  - A mountpoint can become inaccessible when the creation of a new inode
    fails, because the inode already exists and is a mountpoint.
- Introduce support for supplemental groups.
- Add test 46 to test supplemental group functionality (and removed obsolete
  suppl. tests from test 2).
- Clean up VFS (not everything is done yet).
- ISOFS now opens device read-only. This makes the -r flag in the mount command
  unnecessary (but will still report to be mounted read-write).
- Introduce PipeFS. PipeFS is a new FS that handles all anonymous and
  named pipes. However, named pipes still reside on the (M)FS, as they are part
  of the file system on disk. To make this work VFS now has a concept of
  'mapped' inodes, which causes read, write, truncate and stat requests to be
  redirected to the mapped FS, and all other requests to the original FS.
2009-12-20 20:27:14 +00:00
Cristiano Giuffrida
e090013056 Drivers and servers are simply known as services.
/etc CHANGES:
- /etc/drivers.conf has been renamed to /etc/system.conf. Every entry in 
the file is now marked as "service" rather than driver.
- user "service" has been added to password file /etc/passwd.
- docs/UPDATING updated accordingly, as well as every other mention to the old
drivers.conf in the system.

RS CHANGES:
- No more distinction between servers and drivers.
- RS_START has been renamed to RS_UP and the old legacy RS_UP and RS_UP_COPY
dropped.
- RS asks PCI to set / remove ACL entries only for services whose ACL properties
have been set. This change eliminates unnecessary warnings.
- Temporarily minimize the risk of potential races at boot time or when starting
a new service. Upcoming changes will eliminate races completely.
- General cleanup.
2009-12-17 01:53:26 +00:00
Cristiano Giuffrida
f4574783dc Rewrite of boot process
KERNEL CHANGES:
- The kernel only knows about privileges of kernel tasks and the root system
process (now RS).
- Kernel tasks and the root system process are the only processes that are made
schedulable by the kernel at startup. All the other processes in the boot image
don't get their privileges set at startup and are inhibited from running by the
RTS_NO_PRIV flag.
- Removed the assumption on the ordering of processes in the boot image table.
System processes can now appear in any order in the boot image table.
- Privilege ids can now be assigned both statically or dynamically. The kernel
assigns static privilege ids to kernel tasks and the root system process. Each
id is directly derived from the process number.
- User processes now all share the static privilege id of the root user
process (now INIT).
- sys_privctl split: we have more calls now to let RS set privileges for system
processes. SYS_PRIV_ALLOW / SYS_PRIV_DISALLOW are only used to flip the
RTS_NO_PRIV flag and allow / disallow a process from running. SYS_PRIV_SET_SYS /
SYS_PRIV_SET_USER are used to set privileges for a system / user process.
- boot image table flags split: PROC_FULLVM is the only flag that has been
moved out of the privilege flags and is still maintained in the boot image
table. All the other privilege flags are out of the kernel now.

RS CHANGES:
- RS is the only user-space process who gets to run right after in-kernel
startup.
- RS uses the boot image table from the kernel and three additional boot image
info table (priv table, sys table, dev table) to complete the initialization
of the system.
- RS checks that the entries in the priv table match the entries in the boot
image table to make sure that every process in the boot image gets schedulable.
- RS only uses static privilege ids to set privileges for system services in
the boot image.
- RS includes basic memory management support to allocate the boot image buffer
dynamically during initialization. The buffer shall contain the executable
image of all the system services we would like to restart after a crash.
- First step towards decoupling between resource provisioning and resource
requirements in RS: RS must know what resources it needs to restart a process
and what resources it has currently available. This is useful to tradeoff
reliability and resource consumption. When required resources are missing, the
process cannot be restarted. In that case, in the future, a system flag will
tell RS what to do. For example, if CORE_PROC is set, RS should trigger a
system-wide panic because the system can no longer function correctly without
a core system process.

PM CHANGES:
- The process tree built at initialization time is changed to have INIT as root
with pid 0, RS child of INIT and all the system services children of RS. This
is required to make RS in control of all the system services.
- PM no longer registers labels for system services in the boot image. This is
now part of RS's initialization process.
2009-12-11 00:08:19 +00:00
Erik van der Kouwe
6adadade32 Implementation of strto(u)ll, documentation and tests for strto(u)l(l) 2009-12-09 19:01:38 +00:00
Erik van der Kouwe
bd0933a19b Implementation of getrlimit and getdtablesize 2009-12-07 19:56:40 +00:00
Erik van der Kouwe
5427ab41c8 Add realpath function 2009-12-04 07:52:22 +00:00
Erik van der Kouwe
150dfbe96d Cleanup getsockopt and add SO_TYPE 2009-12-04 07:26:56 +00:00
David van Moolenbroek
fe982ca684 FPU: fix field names, compiler warning, long lines 2009-12-02 23:12:46 +00:00
Ben Gras
38fecc5de1 Part of the FPU changes; forgot to add these files in FPU commit. 2009-12-02 16:35:05 +00:00
Erik van der Kouwe
9a10c6c620 Specify types for integer MAX constants 2009-12-02 15:35:09 +00:00
Ben Gras
bd42705433 FPU context switching support by Evgeniy Ivanov. 2009-12-02 13:01:48 +00:00
David van Moolenbroek
fce9fd4b4e Add 'getidle' CPU utilization measurement infrastructure 2009-12-02 11:52:26 +00:00
David van Moolenbroek
be2087ecf9 Filter driver by Wu Bingzheng et al 2009-12-02 10:08:58 +00:00
David van Moolenbroek
f197bcb435 Allow servers to run with fewer privileges:
- allow non-root processes to get their own endpoint
- make alloc_contig() call sys_umap() only when requested
2009-12-02 10:06:58 +00:00
David van Moolenbroek
4924d1a9b5 RS changes:
- add new "control" config directive, to let drivers restart drivers
  (by Jorrit Herder)
- fix bug causing system processes to be started twice sometimes
2009-12-02 09:54:50 +00:00
David van Moolenbroek
c6cce1823d Portability: POSIXize some of inet's error codes 2009-11-28 13:18:33 +00:00
David van Moolenbroek
e06e85b511 Portability: include sys/select.h from sys/time.h 2009-11-22 20:11:06 +00:00
David van Moolenbroek
3926b70b22 Remove dead mini_ds_retrieve_u32 code 2009-11-17 14:10:09 +00:00
Tomas Hruby
8a44a44cb9 Local APIC
- local APIC timer used as the source of time

- PIC is still used as the hw interrupt controller as we don't have
  enough info without ACPI or MPS to set up IO APICs

- remapping of APIC when switching paging on, uses the new mechanism
  to tell VM what phys areas to map in kernel's virtual space

- one more step to SMP

based on code by Arun C.
2009-11-16 21:41:44 +00:00