Fix found places where uio_resid is truncated to int.

Add the sysctl debug.iosize_max_clamp, enabled by default. Setting the
sysctl to zero allows to perform the SSIZE_MAX-sized i/o requests from
th

Fix found places where uio_resid is truncated to int.

Add the sysctl debug.iosize_max_clamp, enabled by default. Setting the
sysctl to zero allows to perform the SSIZE_MAX-sized i/o requests from
the usermode.

Discussed with: bde, das (previous versions)
MFC after: 1 month

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IFC @ r226824

MFC

In order to maximize the re-usability of kernel code in user space this
patch modifies makesyscalls.sh to prefix all of the non-compatibility
calls (e.g. not linux_, freebsd32_) with sys_ and updates

In order to maximize the re-usability of kernel code in user space this
patch modifies makesyscalls.sh to prefix all of the non-compatibility
calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel
entry points and all places in the code that use them. It also
fixes an additional name space collision between the kernel function
psignal and the libc function of the same name by renaming the kernel
psignal kern_psignal(). By introducing this change now we will ease future
MFCs that change syscalls.

Reviewed by: rwatson
Approved by: re (bz)

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IFC @ r225592

sys/dev/bvm/bvm_console.c - move up to the new alt-break order.

Integrate FreeBSD/head into projects/zfsd/head as of SVN revision 224870.

Second-to-last commit implementing Capsicum capabilities in the FreeBSD
kernel for FreeBSD 9.0:

Add a new capability mask argument to fget(9) and friends, allowing system
call code to declare what c

Second-to-last commit implementing Capsicum capabilities in the FreeBSD
kernel for FreeBSD 9.0:

Add a new capability mask argument to fget(9) and friends, allowing system
call code to declare what capabilities are required when an integer file
descriptor is converted into an in-kernel struct file *. With options
CAPABILITIES compiled into the kernel, this enforces capability
protection; without, this change is effectively a no-op.

Some cases require special handling, such as mmap(2), which must preserve
information about the maximum rights at the time of mapping in the memory
map so that they can later be enforced in mprotect(2) -- this is done by
narrowing the rights in the existing max_protection field used for similar
purposes with file permissions.

In namei(9), we assert that the code is not reached from within capability
mode, as we're not yet ready to enforce namespace capabilities there.
This will follow in a later commit.

Update two capability names: CAP_EVENT and CAP_KEVENT become
CAP_POST_KEVENT and CAP_POLL_KEVENT to more accurately indicate what they
represent.

Approved by: re (bz)
Submitted by: jonathan
Sponsored by: Google Inc

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Integrate from Head into ZFSD feature branch as of revision r224141.

MFC

IFC @ r223696 to pick up dfr's userboot

Add some checks to ensure that Capsicum is behaving correctly, and add some
more explicit comments about what's going on and what future maintainers
need to do when e.g. adding a new operation to a s

Add some checks to ensure that Capsicum is behaving correctly, and add some
more explicit comments about what's going on and what future maintainers
need to do when e.g. adding a new operation to a sys_machdep.c.

Approved by: mentor(rwatson), re(bz)

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IFC @ r222830

MFC

Log the socket address passed as the destination to sendto() and sendmsg()
via ktrace.

MFC after: 1 week

After the r219999 is merged to stable/8, rename fallocf(9) to falloc(9)
and remove the falloc() version that lacks flag argument. This is done
to reduce the KPI bloat.

Requested by: jhb
X-MFC-note:

After the r219999 is merged to stable/8, rename fallocf(9) to falloc(9)
and remove the falloc() version that lacks flag argument. This is done
to reduce the KPI bloat.

Requested by: jhb
X-MFC-note: do not

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Merge svn+ssh://svn.freebsd.org/base/head@218816

Mfp4 CH=177274,177280,177284-177285,177297,177324-177325

VNET socket push back:
try to minimize the number of places where we have to switch vnets
and narrow down the time we stay switched. A

Mfp4 CH=177274,177280,177284-177285,177297,177324-177325

VNET socket push back:
try to minimize the number of places where we have to switch vnets
and narrow down the time we stay switched. Add assertions to the
socket code to catch possibly unset vnets as seen in r204147.

While this reduces the number of vnet recursion in some places like
NFS, POSIX local sockets and some netgraph, .. recursions are
impossible to fix.

The current expectations are documented at the beginning of
uipc_socket.c along with the other information there.

Sponsored by: The FreeBSD Foundation
Sponsored by: CK Software GmbH
Reviewed by: jhb
Tested by: zec

Tested by: Mikolaj Golub (to.my.trociny gmail.com)
MFC after: 2 weeks

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Eliminate unnecessary page hold_count checks. These checks predate
r90944, which introduced a general mechanism for handling the freeing
of held pages.

Reviewed by: kib@

If more than one thread allocated sf buffers for sendfile(2), and
each of the threads needs more while current pool of the buffers is
exhausted, then neither thread can make progress.

Switch to nowa

If more than one thread allocated sf buffers for sendfile(2), and
each of the threads needs more while current pool of the buffers is
exhausted, then neither thread can make progress.

Switch to nowait allocations after we got first buffer already.

Reported by: az
Reviewed by: alc (previous version)
Tested by: pho
MFC after: 1 week

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Just pass M_ZERO to malloc(9) instead of clearing allocated memory separately.

Merge svn+ssh://svn.freebsd.org/base/head@214309

Implement correct handling of address parameter and
sendinfo for SCTP send calls.

MFC after: 4 weeks.

Merge svn+ssh://svn.freebsd.org/base/head@209749

MFC r209624
* Do not dereference a NULL pointer when calling an SCTP send syscall
not providing a destination address and using ktrace.
* Do not copy out kernel memory when providing sinfo for s

MFC r209624
* Do not dereference a NULL pointer when calling an SCTP send syscall
not providing a destination address and using ktrace.
* Do not copy out kernel memory when providing sinfo for sctp_recvmsg().
Both bugs where reported by Valentin Nechayev.
The first bug results in a kernel panic.
Approved by: re@

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Send SIGPIPE to the thread that issued the offending system call
rather than to the entire process.

Reported by: Anit Chakraborty
Reviewed by: kib, deischen (concept)
MFC after: 1 week