if no records where returned by VOP_READDIR(). Readdir implementations
allowed to return 0 records when first record is larger then supplied
buffer. In this case trying to execute VOP_READDIR() again causes the
syscall looping forewer.
The goto was there from the day 1, which goes back to 1995 year.
Reported and tested by: Beat G?tzi <beat chruetertee ch>
MFC after: 2 weeks
setting SV_SHP flag and providing pointer to the vm object and mapping
address. Provide simple allocator to carve space in the page, tailored
to put the code with alignment restrictions.
Enable shared page use for amd64, both native and 32bit FreeBSD
binaries. Page is private mapped at the top of the user address
space, moving a start of the stack one page down. Move signal
trampoline code from the top of the stack to the shared page.
Reviewed by: alc
information is set to FreeBSD. It had been falling through to the end
of linux_ioctl_sound() and returning ENOIOCTL. Noticed when running the
Linux ALSA amixer tool.
Add a LINUX_SOUND_MIXER_READ_CAPS ioctl which is used by the Skype
v2.1.0.81 binary.
Reviewed by: gavin
MFC after: 2 weeks
the original amd64 and i386 headers with stubs.
Rename (AMD64|I386)_BUS_SPACE_* to X86_BUS_SPACE_* everywhere.
Reviewed by: imp (previous version), jhb
Approved by: kib (mentor)
With that change the Atheros 9xxx driver is actually usable and does not
panic anymore.
Submitted by: Paul B Mahol <onemda at gmail.com>
MFC after: 2 weeks
driver for example requests the NetCfgInstanceId but doesn't check the
returned status code and will happily access random memory instead.
Submitted by: Paul B Mahol <onemda at gmail.com>
MFC after: 2 weeks
- Many drivers on amd64 are picking system uptime, interrupt time and ticks
via global data structure instead of calling functions for performance
reasons. For now just patch such address so driver will not trigger page
fault when trying to access such data. In future, additional callout may
be added to update data in periodic intervals.
- On amd64 we need to allocate "shadow space" on stack before calling any
function.
Submitted by: Paul B Mahol <onemda at gmail.com>
According to the comment for MmIsAddressValid() there are issues on PAE
kernels using pmap_kextract().
Submitted by: Paul B Mahol <onemda at gmail.com>
thread specific informations.
In order to do that, and in order to avoid KBI breakage with existing
infrastructure the following semantic is implemented:
- For live programs, a new member to the PT_LWPINFO is added (pl_tdname)
- For cores, a new ELF note is added (NT_THRMISC) that can be used for
storing thread specific, miscellaneous, informations. Right now it is
just popluated with a thread name.
GDB, then, retrieves the correct informations from the corefile via the
BFD interface, as it groks the ELF notes and create appropriate
pseudo-sections.
Sponsored by: Sandvine Incorporated
Tested by: gianni
Discussed with: dim, kan, kib
MFC after: 2 weeks
properly aligned structure is atomic on all supported architectures, and
the thread that should see side-effect of assignment is the same thread
that does assignment.
Use a more appropriate conditional to detect the linux ABI.
Suggested by: kib
X-MFC: together with r215664
on FreeBSD (amd64), invocations of "javac" (or "java") eventually
end with the output of "Killed" and exit code 137.
This is caused by:
1. After calling exec() in multithreaded linux program threads are not
destroyed and continue running. They get killed after program being
executed finishes.
2. linux_exit_group doesn't return correct exit code when called not
from group leader. Which happens regularly using sun jvm.
The submitters fix this in a similar way to how NetBSD handles this.
I took the PRs away from dchagin, who seems to be out of touch of
this since a while (no response from him).
The patches committed here are from [2], with some little modifications
from me to the style.
PR: 141439 [1], 144194 [2]
Submitted by: Stefan Schmidt <stefan.schmidt@stadtbuch.de>, gk
Reviewed by: rdivacky (in april 2010)
MFC after: 5 days
and MmAllocateContiguousMemorySpecifyCache().
Those two functions take 64-bit variable(s) for their arguments. On i386
that takes additional 32-bit variable per argument. This is required so
that windrv_wrap() can correctly wrap function that miniport driver calls
with stdcall convention. Similar explanation is provided in subr_ndis.c for
other functions.
Submitted by: Paul B Mahol <onemda at gmail.com>
unsupported futex operation
- for those futex operations which are known to be not supported,
print out which futex operation it is
- shortcut the error return of the unsupported FUTEX_CLOCK_REALTIME in
some cases:
FUTEX_CLOCK_REALTIME can be used to tell linux to use
CLOCK_REALTIME instead of CLOCK_MONOTONIC. FUTEX_CLOCK_REALTIME
however must only be set, if either FUTEX_WAIT_BITSET or
FUTEX_WAIT_REQUEUE_PI are set too. If that's not the case
we can die with ENOSYS right at the beginning.
Submitted by: arundel
Reviewed by: rdivacky (earlier iteration of the patch)
MFC after: 1 week
kernel of exactly the same __FreeBSD_version as the headers module was
compiled against.
Mark our in-tree ABI emulators with DECLARE_MODULE_TIED. The modules
use kernel interfaces that the Release Engineering Team feel are not
stable enough to guarantee they will not change during the life cycle
of a STABLE branch. In particular, the layout of struct sysentvec is
declared to be not part of the STABLE KBI.
Discussed with: bz, rwatson
Approved by: re (bz, kensmith)
MFC after: 2 weeks
- handle compat32 processes;
- remove the checks for copied in addresses to belong into valid
usermode range, proc_rwmem() does this;
- simplify loop reading single string, limit the total amount of strings
collected by ARG_MAX bytes;
- correctly add '\0' at the end of each copied string;
- fix style.
In linprocfs_doprocenviron():
- unlock the process before calling copyin code [1]. The process is held
by pseudofs.
In linprocfs_doproccmdline:
- use linprocfs_doargv() to handle !curproc case for which p_args is not cached.
Reported by: plulnet [1]
Tested by: pluknet
Approved by: des (linprocfs maintainer, previous
version of the patch)
MFC after: 3 weeks
code associated with overflow or with the drain function. While this
function is not expected to be used often, it produces more information
in the form of an errno that sbuf_overflowed() did.
In particular, provide pagesize and pagesizes array, the canary value
for SSP use, number of host CPUs and osreldate.
Tested by: marius (sparc64)
MFC after: 1 month
Now we use a regular mutex instead of a spin mutex. When we enter and exit
the emulator, spinlock_enter() and spinlock_exit() are additionally used.
Move some page table related stuff from x86bios_init() and x86bios_uninit()
to x86bios_map_mem() and x86bios_unmap_mem().
