target than any pre-C99 POSIX (which we could never have conformed to
under our ia32 ABI).
Document why HOST_NAME_MAX (and hopefully other similar constants in the
future) is not defined.
Define in <sys/unistd.h> all 1003.1-2001 option and option group constants
which did not meet the standard for inclusion in <unistd.h>. Delete from
<sys/unistd.h> all sysconf(3) constants and those option constants which
were moved to <unistd.h>. pathconf(3) keys remain here as pathconf() is
implemented directly as a system call. Add a comment noting brokenness
in some .1e additions here. Fix whitespace in definition of constants for
rfork().
(5 of 5)
and predictable way, and I apologize if I have gotten it wrong anywhere,
getting prior review on a patch like this is not feasible, considering
the number of people involved and hardware availability etc.)
If struct disklabel is the messenger: kill the messenger.
Inside struct disk we had a struct disklabel which disk drivers used to
communicate certain metrics to the disklayer above (GEOM or the disk
mini-layer). This commit changes this communication to use four
explicit fields instead.
Amongst the benefits is that the fields do not get overwritten by
wrong or bogus on-disk disklabels.
Once that is clear, <sys/disk.h> which is included in the drivers
no longer need to pull <sys/disklabel.h> and <sys/diskslice.h> in,
the few places that needs them, have gotten explicit #includes for
them.
The disklabel inside struct disk is now only for internal use in
the disk mini-layer, so instead of embedding it, we malloc it as
we need it.
This concludes (modulus any mistakes) the series of disklabel related
commits.
I belive it all amounts to a NOP for all the rest of you :-)
Sponsored by: DARPA & NAI Labs.
o Unusual order of #ifndef _FOO_H_, followed by license.
o Missing tabs in typedef.
o Missing tabs in struct between types and member names.
o Unaligned, unordered function prototypes.
o Reversed comment for #endif.
function were put in i386/i386/machdep.c from where it has been
cut and pasted to other architectures with only minor corruption.
Disklabel is really a MI format in many ways, at least it certainly
is when you operate on struct disklabel.
Put bounds_check_with_label() back in subr_disklabel.c where it belongs.
Sponsored by: DARPA & NAI Labs.
RXSTATE to STOPPED, but to WAIT. This should fix hangs which
could only be solved by replugging the cable.
Submitted by: jhb
Reviewed by: phk
MFC after: 2 weeks
Rename bioqdisksort() to bioq_disksort().
Keep a #define around to avoid changing all diskdrivers right now.
Move it from subr_disklabel.c to subr_disk.c.
Move prototype from <sys/disklabel.h> to <sys/bio.h>
Sponsored by: DARPA and NAI Labs.
Rename diskerr() to disk_err() for naming consistency.
Drop the by now entirely useless struct disklabel argument.
Add a flag argument for new-line termination.
Fix a couple of printf-format-casts to %j instead of %l.
Correctly print the name of all bio commands.
Move the function from subr_disklabel.c to subr_disk.c,
and from <sys/disklabel.h> to <sys/disk.h>.
Use the new disk_err() throughout, #include <sys/disk.h> as needed.
Bump __FreeBSD_version for the sake of the aac disk drivers #ifdefs.
Remove unused disklabel members of softc for aac, amr and mlx, which seem
to originally have been intended for diskerr() use, but which only rotted
and got Copy&Pasted at least two times to many.
Sponsored by: DARPA & NAI Labs.
- Get test for valid trace request contents right.
- You don't use 'stq' to move a value from one register to another,
use 'mov' to read sp. Also, can't use nice names for registers
in in-line asm in gcc.
- pc is not a publically accessible register, instead, create a label
in the asm code and use 'lda' to load the address of that label into
the pc field of the trace request.
- Use correction function name for db_print_backtrace().
NVIDIA API calls; more specifically, it adds an ioctl() handler for
the range of possible NVIDIA ioctl numbers.
Submitted by: Christian Zander <zander@minion.de>
the kernel. By default this is turned off since otherwise it could scroll
valuable panic messages off of the screen. This option can be turned on
by the DDB_TRACE kernel option as well as the debug.trace_on_panic sysctl.
Also, fix the DDB_UNATTENDED option to use its own header instead of
abusing opt_ddb.h. This way turning that one option on or off doesn't
force you to recompile all of ddb.
Requested by: many (1), bde (2*)
* - I know bde prefers !abusing option headers in general but can't
remember if he as brought up this specific case.
MD function is just a wrapper around db_stack_trace_cmd() that prints out
a backtrace of curthread. Currently, this function is only implemented
on i386 and alpha (and the alpha version isn't quite tested yet, will do
that in a bit). Other changes:
- For i386, fix a bug in the raw frame address case. The eip we extract
from the passed in frame address does not match the frame we received.
Thus, instead of printing a bogus frame with the wrong eip, go ahead
and advance frame down to the same frame as the eip we are using.
- For alpha, attempt to add a way of doing a raw trace for alpha. Instead
of passing a frame address in 'addr', pass in a pointer to a structure
containing PC and KSP and use those to start the backtrace. The alpha
db_print_backtrace() uses asm to read in the current PC and KSP values
into such a request.
Tested on: i386
Requested by: many
This patch addresses a bug that can cause a GPF in the kernel - if a
process makes use of i386_set_ldt to install a LDT entry, then loads
a corresponding segment descriptor into %gs, forks, and if the child
execs.
In this scenario, setregs executes user_ldt_free and then determines
how to reset the %gs register:
/* reset %gs as well */
if (pcb == curpcb)
load_gs(_udatasel);
else
pcb->pcb_gs = _udatasel;
This is insufficient in the fork/exec case, since pcb will be equal
to curpcb when the child execs; load_gs will reset %gs to _udatasel
but it doesn't reset pcb->pcb_gs; upon return from the system call,
cpu_switch_load_gs will thus attempt to restore %gs from pcb->pcb_gs
and trigger a GPF since all LDT entries have already been cleared.
The fix is to always reset pcb->pcb_gs to _udatasel.
Submitted by: Christian Zander <zander@minion.de>
Reviewed by: jake
wasn't doing. Rather than just lock and unlock the vnode around the call
to VOP_FSYNC(), implement rwatson's suggestion to lock the file vnode
in kern_link() before calling VOP_LINK(), since the other filesystems
also locked the file vnode right away in their link methods. Remove the
locking and and unlocking from the leaf filesystem link methods.
Reviewed by: rwatson, bde (except for the unionfs_link() changes)
header and return that length, was misguided.
The check itself didn't take into account the fact that the
mbuf pointer pased in may be null, and the function is
defined specifically for cases where the caller knows what it wants.
Rather than fix the check I'm removing it as phk suggested.
Submitted by: phk@freebsd.org
- remove test in pmap_activate that prevented vmspace sharing (v/rfork)
- always sync icache in pmap_enter until problems are sorted
- fix incorrect use of regions in pmap_kenter
- bring in pmap_release from NetBSD
- fix overwrite of bootstrap flag in pmap_pvo_enter
Approved by: benno
- sysctl for cacheline size, required by libc/rtld
- init'd more exception vectors
- fixed problem with register overwrite in exec_setregs
- removed redundant NetBSD code
Approved by: benno
Option 'P1003_1B_SEMAPHORES' to compile them in, or load the "sem" module
to activate them.
Have kern/makesyscalls.sh emit an include for sys/_semaphore.h into sysproto.h
to pull in the typedef for semid_t.
Add the syscalls to the syscall table as module stubs.
that are shareable between processes.
There will be a cleanup shortly along with the necessary changes made to
libc, libc_r, libpthread as well as the hooks into sys/conf and sys/modules.
file servers fail to do it in the right way.
New NFLUSHWIRE flag marks pending flush request(s).
NB: not all cases covered by this commit.
Obtained from: Darwin
- Remove all instances of the mallochash.
- Stash the slab pointer in the vm page's object pointer when allocating from
the kmem_obj.
- Use the overloaded object pointer to find slabs for malloced memory.
<sys/types.h>.
o Use the relatively new visibility primitives for conditionals.
o Make O_SYNC an alias for O_FSYNC.
o Mark the F* names as deprecated.
o Add some comments to note missing POSIX requirements or options.
Windows 2000 box and a FreeBSD box could stall. The problem turned out
to be a timestamp reply bug in the W2K TCP stack. FreeBSD sends a
timestamp with the SYN, W2K returns a timestamp of 0 in the SYN+ACK
causing FreeBSD to calculate an insane SRTT and RTT, resulting in
a maximal retransmit timeout (60 seconds). If there is any packet
loss on the connection for the first six or so packets the retransmit
case may be hit (the window will still be too small for fast-retransmit),
causing a 60+ second pause. The W2K box gives up and closes the
connection.
This commit works around the W2K bug.
15:04:59.374588 FREEBSD.20 > W2K.1036: S 1420807004:1420807004(0) win 65535 <mss 1460,nop,wscale 2,nop,nop,timestamp 188297344 0> (DF) [tos 0x8]
15:04:59.377558 W2K.1036 > FREEBSD.20: S 4134611565:4134611565(0) ack 1420807005 win 17520 <mss 1460,nop,wscale 0,nop,nop,timestamp 0 0> (DF)
Bug reported by: Guido van Rooij <guido@gvr.org>
