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Commit Graph

15241 Commits

Author SHA1 Message Date
Jens Schweikhardt
db081af109 Typo corrected. 2013-07-12 17:37:05 +00:00
Marius Strobl
85338755c1 Prefix the alias macros for members of struct __mcontext with an underscore
in order to avoid a clash in the net80211 code.
2013-07-12 14:24:52 +00:00
Hiroki Sato
4825b1e098 Add a leaf node CTL_NET.PF_ROUTE.0.AF.NET_RT_DUMP.0.FIB. This returns
routing table with the specified FIB number, not td->td_proc->p_fibnum.
2013-07-12 12:36:12 +00:00
David Chisnall
1583bcb4ee Fix the build with C++ where __builtin_types_compatible_p is not allowed. 2013-07-12 11:03:51 +00:00
Hiroki Sato
c70d61d51d Revert r253247. This change should be improved based on a lesson learnt
from r233646 first.

Pointed out by:	jmallett
2013-07-12 04:22:46 +00:00
Hiroki Sato
aae0d5e549 Use strtoumax() instead of strtoul() for id/ref attr in XML elements.
This improves compatibility when running an ILP32 binary on LP64 kernel.

Spotted by:	gjb
2013-07-12 02:36:00 +00:00
David Chisnall
95f82796a9 Fix some typoes in math.h cleanup. 2013-07-11 19:34:16 +00:00
David Chisnall
a3fc79de87 Cleanups to math.h that prevent namespace conflicts with C++.
Reviewed by:	bde
MFC after:	3 days
2013-07-11 17:41:04 +00:00
Mikolaj Golub
374931bdc1 In r227839, when removing libkvm dependency on procfs(5),
kvm_uread() function, used for reading from /proc/pid/mem, was
removed too. But the function declaration remained in kvm.h
public header and the soname was not bumped.

Remove kvm_uread() from kvm.h and bump the soname.

Reported by:	rmh
Discussed on:	arch
2013-07-10 19:44:43 +00:00
Michael Tuexen
b71f585303 Fix the handling of SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC in
sctp_opt_info().

MFC after: 3 days
2013-07-09 19:12:47 +00:00
Michael Tuexen
7c9b649294 Fix a bug where SCTP_ENABLE_STREAM_RESET is not handled by
sctp_opt_info().

MFC after: 3 days
2013-07-09 19:04:19 +00:00
Hiroki Sato
4e4f91b817 Update references. 2013-07-09 08:23:43 +00:00
Jilles Tjoelker
fc0bd00fb5 mktemp(3): Add standards section. Prefer standard header.
mktemp(), mkstemp() and mkdtemp() are available in standard <stdlib.h> and
also in <unistd.h>. Encourage use of the former by listing it in the
synopsis.
2013-07-05 20:24:50 +00:00
Andrey A. Chernov
61762e7dbc Style fix noted by bde@ 2013-07-04 12:35:39 +00:00
Andrey A. Chernov
7d815fd551 After fixing ranges restore POSIX requirement: rand() call without
srand() must be the same as srand(1); rand();
(yet one increment)
2013-07-04 00:02:10 +00:00
Andrey A. Chernov
df5c65e22a In addition to prev. commit, for repeated rand_r(3) calls don't forget
to compensate back at the end incremented at the start internal
state.

MFC after:      2 weeks
2013-07-03 23:27:04 +00:00
Andrey A. Chernov
476d9314d6 1) POSIX requires rand(3) return values to be in the [0, RAND_MAX] range,
but ACM formula we use have internal state (and return value) in the
[1, 0x7ffffffe] range, so our RAND_MAX (0x7fffffff) is never reached
because it is off by one, zero is not reached too.

Correct both RAND_MAX and rand(3) return value, shifting last one
to the 0 by 1 subtracted, resulting POSIXed [0, 0x7ffffffd(=new RAND_MAX)]
range.

2) Add a checks for not overflowing on too big seeds. It may happens on
the machines, where sizeof(unsigned int) > 32 bits.

Reviewed by:    bde [1]
MFC after:      2 weeks
2013-07-03 21:21:54 +00:00
Peter Wemm
ff0b75b897 Make it clear that there are three separate internal locks. 2013-07-03 18:35:21 +00:00
Peter Wemm
7900abff04 As a followup to r252547, propate const down the call stack. 2013-07-03 18:27:45 +00:00
Peter Wemm
19dfd82d81 Replace the #define for "iconv" so it is for the function name instead of
a macro with parameters.  Remove a __DECONST hack and add consts instead
for gnu libiconv API compatability.  This makes it work with things like
devel/boost-libs that expects to use "iconv" as though it were a pointer.
2013-07-03 07:03:19 +00:00
Alexander Motin
637871ea97 Move pos++ out of the complicated equation, introduced at r240780.
There is an oppinion that result of that equation is compiler-specific.

Submitted by:	dt71@gmx.com, kientzle
Reviewed by:	rmacklem
MFC after:	3 days
2013-07-01 17:23:13 +00:00
Peter Wemm
7c5cb6be8c If strdup failed, don't try and free the wrong thing. 2013-07-01 08:38:31 +00:00
Peter Wemm
3d4b80da4e __weak_alias() doesn't exist on FreeBSD. Use __weak_reference();
Expose iconv functions as weak symbols as well as their internal
remapped #define names.  This is necessary for autoconf compatability -
on Linux it appears that #include <iconv.h> isn't a link time
prerequisite for their version that's built into glibc.

Initialize the pthread rwlock.  Note that upstream has three
separate locks.  The file-local static lock appears intentional.

I'm using this as a ports-compatible compile-time substitute for
converters/libiconv on one of my personal machines.
2013-07-01 08:06:26 +00:00
Kai Wang
3254dc0a2b When decoding SLEB128, make sure sign extension is performed for
64-bit integers.

MFC after:	3 days
2013-06-30 21:06:47 +00:00
Jilles Tjoelker
61c2a6184e libc: Access _sigintr more efficiently.
The variable _sigintr is not exported via the version script; therefore,
tell the compiler that no indirection (to allow interposition) is needed.
2013-06-30 20:51:15 +00:00
Ed Schouten
cd8b04c906 Convert this piece of code to use C11 atomics.
As mentioned before, we should at least aim to have one piece of code in
both user space and kernel space that uses C11 atomics, to get some
coverage. This piece of code can be migrated trivially, so it's a good
candidate.
2013-06-30 08:59:33 +00:00
Tim Kientzle
64330eb00f Fix -Wunsequenced warning
Submitted by:	dt71@gmx.com
2013-06-29 15:52:48 +00:00
Tim Kientzle
9bc22394d8 Fix -Wunsequenced warning.
Submitted by:	dt71@gmx.com
2013-06-29 15:51:27 +00:00
Davide Italiano
237abf0c56 - Trim an unused and bogus Makefile for mount_smbfs.
- Reconnect with some minor modifications, in particular now selsocket()
internals are adapted to use sbintime units after recent'ish calloutng
switch.
2013-06-28 21:00:08 +00:00
Eitan Adler
19eb5fb06b Make the order of operations for lib/msun more clear.
Tested with md5 sum of object code

Reported by:	swildner@DragonFlyBSD.org
Submitted by:	bde
2013-06-24 19:12:17 +00:00
Konstantin Belousov
a0b9cbc8a2 The SUSv4tc1 requires that pthread_setcancelstate() shall be not a
cancellation point.  When enabling the cancellation, only process the
pending cancellation for asynchronous mode.

Reported and reviewed by:	Kohji Okuno <okuno.kohji@jp.panasonic.com>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2013-06-19 04:47:41 +00:00
Jeff Roberson
fc03d22b17 Refine UMA bucket allocation to reduce space consumption and improve
performance.

 - Always free to the alloc bucket if there is space.  This gives LIFO
   allocation order to improve hot-cache performance.  This also allows
   for zones with a single bucket per-cpu rather than a pair if the entire
   working set fits in one bucket.
 - Enable per-cpu caches of buckets.  To prevent recursive bucket
   allocation one bucket zone still has per-cpu caches disabled.
 - Pick the initial bucket size based on a table driven maximum size
   per-bucket rather than the number of items per-page.  This gives
   more sane initial sizes.
 - Only grow the bucket size when we face contention on the zone lock, this
   causes bucket sizes to grow more slowly.
 - Adjust the number of items per-bucket to account for the header space.
   This packs the buckets more efficiently per-page while making them
   not quite powers of two.
 - Eliminate the per-zone free bucket list.  Always return buckets back
   to the bucket zone.  This ensures that as zones grow into larger
   bucket sizes they eventually discard the smaller sizes.  It persists
   fewer buckets in the system.  The locking is slightly trickier.
 - Only switch buckets in zalloc, not zfree, this eliminates pathological
   cases where we ping-pong between two buckets.
 - Ensure that the thread that fills a new bucket gets to allocate from
   it to give a better upper bound on allocation time.

Sponsored by:	EMC / Isilon Storage Division
2013-06-18 04:50:20 +00:00
Andrew Turner
8b02079f36 Build __clear_cache on ARM with clang now it supports it. 2013-06-15 12:16:27 +00:00
Ed Schouten
2d5add2ae6 Let ARM use the custom tailored atomic intrinsics. 2013-06-15 09:04:10 +00:00
Ed Maste
580b4d185b Renumber clauses to reduce diffs to other versions
NetBSD, OpenBSD, and Android's Bionic number the clauses 1 through 3,
so follow suit to make comparison easier.
2013-06-13 00:19:30 +00:00
Jeremie Le Hen
54f82841d5 Turn libc.so into an ld script rather than a symlink pointing to the
real shared object and libssp_nonshared.a.

This was the last showstopper that prevented from enabling SSP for ports
by default.  portmgr@ performed a buildworld which showed no significant
breakage with this patch.

Details:

On i386 for PIC objects, gcc uses the __stack_chk_fail_local hidden
symbol instead of calling __stack_chk_fail directly [1].  This happen
not only with our gcc-4.2.1 but also with the latest gcc-4.8.  If you
want the very nasty details, see [2].

OTOH the problem doesn't exist on other architectures.  It also doesn't
exist with Clang as the latter will somehow manage to create the
function in the object file at compile time (contrary to only
referencing it through a symbol that will be brought in at link time).

In a perfect world, when an object file is compiled with
-fstack-protector, it will be linked into a binary or a DSO with this
same flag as well, so GCC will add libssp_nonshared.a to the linker
command-line.  Unfortunately, we don't control softwares in ports and we
may have such broken DSO.  This is the whole point of this patch.

You can reproduce the problem on i386 by compiling a source file into an
object file with "-fstack-protector-all -fPIE" and linking it
into a binary without "-fstack-protector".

This ld script automatically proposes libssp_nonshared.a along with the
real libc DSO to the linker.  It is important to understand that the
object file contained in this library will be pulled in the resulting
binary _only if_ the linker notices one of its symbols is needed (i.e.
one of the SSP symbol is missing).

A theorical performance impact could be when compiling, but my testing
showed less than 0.1% of difference.

[1] For 32-bit code gcc saves the PIC register setup by using
    __stack_chk_fail_local hidden function instead of calling
    __stack_chk_fail directly.  See comment line 19460 in:
    src/contrib/gcc/config/i386/i386.c

[2] When compiling a source file to an object file, if you use something
    which is external to the compilation unit, GCC doesn't know yet if
    this symbol will be inside or outside the DSO.  So it expects the
    worst case and routes the symbol through the GOT, which means
    additional space and extra relocation for rtld(1).

    Declaring a symbol has hidden tells GCC to use the optimal route (no
    GOT), but on the other hand this means the symbol has to be provided
    in the same DSO (namely libssp_nonshared.a).

    On i386, GCC actually uses an hidden symbol for SSP in PIC objects
    to save PIC register setup, as said in [1].

PR:		ports/138228
PR:		ports/168010
Reviewed by:	kib, kan
2013-06-12 21:12:05 +00:00
Dimitry Andric
284c197886 Upgrade our copy of llvm/clang to 3.3 release.
Release notes are still in the works, these will follow soon.

MFC after:	1 month
2013-06-12 18:48:53 +00:00
John Baldwin
608203fd94 Borrow the algorithm from kvm_getprocs() to fix procstat_getprocs() to
handle the case where the process tables grows in between the calls to
fetch the size and fetch the table.

MFC after:	1 week
2013-06-11 20:00:49 +00:00
Dimitry Andric
6a0372513e Vendor import of clang tags/RELEASE_33/final r183502 (effectively, 3.3
release):
http://llvm.org/svn/llvm-project/cfe/tags/RELEASE_33/final@183502
2013-06-10 20:45:12 +00:00
Dimitry Andric
59d6cff90e Vendor import of llvm tags/RELEASE_33/final r183502 (effectively, 3.3
release):
http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_33/final@183502
2013-06-10 20:36:52 +00:00
David Schultz
998b640bcb Add implementations of acoshl(), asinhl(), and atanhl(). This is a
merge of the work done by bde and myself.
2013-06-10 06:04:58 +00:00
Jilles Tjoelker
42cb36d269 Make recv() and send() cancellation points, as required by POSIX.
Call the recvfrom() and sendto() functions overridden by libthr instead of
the _recvfrom() and _sendto() versions that are not cancellation points.
2013-06-09 14:31:59 +00:00
Joel Dahl
2a82581d9b Minor mdoc fixes. 2013-06-09 07:15:43 +00:00
Pedro F. Giffuni
0b4b96e6e5 libstand: Reset the seek pointer in ext2fs as done in UFS.
Based on r134760:

Reset the seek pointer to 0 when a file is successfully opened,
since otherwise the initial seek offset will contain the directory
offset of the filesystem block that contained its directory entry.
This bug was mostly harmless because typically the directory is
less than one filesystem block in size so the offset would be zero.
It did however generally break loading a kernel from the (large)
kernel compile directory.

Also reset the seek pointer when a new inode is opened in read_inode(),
though this is not actually necessary now because all callers set
it afterwards.

PR:		177328
Submitted by:	Eric van Gyzen
Reviewed by:	iedowse
MFC after:	5 days
2013-06-09 01:19:22 +00:00
Jilles Tjoelker
172886a93e sigaction(2): Document various non-POSIX functions as async-signal safe. 2013-06-08 13:45:43 +00:00
Gleb Smirnoff
6160e12c10 Add new system call - aio_mlock(). The name speaks for itself. It allows
to perform the mlock(2) operation, which can consume a lot of time, under
control of aio(4).

Reviewed by:	kib, jilles
Sponsored by:	Nginx, Inc.
2013-06-08 13:27:57 +00:00
Ed Schouten
e737464f59 Use improved __sync_*() intrinsics for MIPS in userspace as well.
r251524 introduced custom tailored versions for MIPS of these functions
for kernel-space code. We can just reuse them in userspace as well.
2013-06-08 13:22:53 +00:00
Andrew Turner
8e03dd5926 Finish pulling in the NetBSD setjmp/longjmp updates on ARM.
Store/restore the VFP registers in setjmp/longjmp on ARM EABI if VFP is
enabled in the kernel. It checks the hw.floatingpoint sysctl to see if
floating-point is available and uses this to determine if it should store
them. If it does it uses a different magic value so longjmp is able to know
if it should load them.
2013-06-07 22:01:06 +00:00
Andrew Turner
4e75169f43 Include machine/setjmp.h to get the definition of _JB_MAGIC__SETJMP. This
allows us to remove it from the ARM copy of machine/asm.h.
2013-06-07 21:13:28 +00:00
Andrew Turner
4ce3ba179a Remove an extra copy of _setjmp from libstand. We have used the libc version
of this function since r183876.
2013-06-07 21:06:19 +00:00