src/sys/compat, branch upstream/10.1.0

MFC r272132:

2014-09-28T11:08:32Z

Fix fcntl(2) compat32 after r270691. Approved by: re (glebius)

MFC r272059:

2014-09-27T08:33:50Z

Remake Linux' SOUND_MIXER_INFO IOCTL as a wrapper around new FreeBSD's one. Submitted by: Dmitry Luhtionov Approved by: re (kib)

MFC r271743:

2014-09-23T07:50:04Z

Implement most of timer_{create,settime,gettime,getoverrun,delete} for amd64/linux32. Fix the entirely bogus (untested) version from r161310 for i386/linux using the same shared code in compat/linux. It is unclear to me if we could support more clock mappings but the current set allows me to successfully run commercial 32bit linux software under linuxolator on amd64. Reviewed by: jhb Differential Revision: D784 Sponsored by: DARPA, AFRL Approved by: re (gjb)

Regen.

2014-09-03T09:05:37Z

MFC r270691:

2014-09-03T09:05:16Z

Fix handling of the third argument for fcntl(2). The native syscall uses long for arg, which needs translation.

MFC 264164: Convert while copying in control messages.

2014-08-03T02:37:33Z

Obtained from: Juniper Networks, Inc.

MFC r267051:

2014-07-04T15:09:56Z

- Add support for SG_GET_SG_TABLESIZE IOCTL to report that we don't support scatter/gather lists. - Return error for still unsupported SG 3.x API read/write calls.

MFC r266981:

2014-07-02T10:16:12Z

Overhaul CAM SG driver IOCTL interfaces. Make it really work for native FreeBSD programs. Before this it was broken for years due to different number of pointer dereferences in Linux and FreeBSD IOCTL paths, permanently returning errors to FreeBSD programs. This change breaks the driver FreeBSD IOCTL ABI, making it more strict, but since it was not working any way -- who bother. Add shims for 32-bit programs on 64-bit host, translating the argument of the SG_IO IOCTL for both FreeBSD and Linux ABIs. With this change I was able to run 32-bit Linux sg3_utils tools and simple 32 and 64-bit FreeBSD test tools on both 32 and 64-bit FreeBSD systems.

MFC r266924:

2014-06-03T04:29:26Z

Glibc was switched to the FUTEX_WAIT_BITSET op and CLOCK_REALTIME flag has been added instead of FUTEX_WAIT to replace the FUTEX_WAIT logic which needs to do gettimeofday() calls before the futex syscall to convert the absolute timeout to a relative timeout. Before this the CLOCK_MONOTONIC used by the FUTEX_WAIT_BITSET op. When the FUTEX_CLOCK_REALTIME is specified the timeout is an absolute time, not a relative time. Rework futex_wait to handle this. On the side fix the futex leak in error case and remove useless parentheses. Properly calculate the timeout for the CLOCK_MONOTONIC case. Tested by: Hans Petter Selasky

MFC r266782:

2014-05-31T05:59:55Z

In r218101 I have not changed properly the futex syscall definition. Some Linux futex ops atomically verifies that the futex address uaddr (uval) contains the value val. Comparing signed uval and unsigned val may lead to an unexpected result, mostly to a deadlock. So copyin uaddr to an unsigned int to compare the parameters correctly. While here change ktr records to print parameters in more readable format.