linux(4): Deorbit linux_nosys from syscalls.master

Differential Revision: https://reviews.freebsd.org/D41902
MFC after: 1 week

(cherry picked from commit 8e523be5a5a2cb9660021d2de5732ee7257b2788)

linux(4): Update syscalls.master to 6.5

MFC after: 1 week

(cherry picked from commit 0a16d3d14db67c89ee08f954c670ec4f447a7ab5)

linux(4): Prepare to retire linux32_copyinuio

MFC after: 1 month

linux(4): Add a writev syscall wrapper

Adding a writev syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always returns EA

linux(4): Add a writev syscall wrapper

Adding a writev syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always returns EAGAIN while FreeBSD can return ENOBUFS.

MFC after: 1 month

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linux(4): Modify write syscall to match Linux

Adding a write syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always retu

linux(4): Modify write syscall to match Linux

Adding a write syscall wrapper is needed due to Linux family of write
syscalls doesn't distinguish between in kernel blocking operations
and always returns EAGAIN while FreeBSD can return ENOBUFS.

MFC after: 1 month

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linux(4): Use l_off_t type for offset argument in sendfile syscall

The off_t on Linux is a long, so it's non-functional change, just to
avoid confusing future readers.

MFC after: 1 month

sys: Remove $FreeBSD$: one-line bare tag

Remove /^\s*\$FreeBSD\$$\n/

linux(4): Modify ioprio syscalls to match Linux

MFC after: 1 month

linux(4): Modify xattr syscalls to match Linux

MFC after: 1 month

linux(4): Add a dedicated linux_exec_copyin_args()

Because Linux allows to exec binaries with 0 argc.

Reviewed by: brooks
Differential Revision: https://reviews.freebsd.org/D40148
MFC after: 2 mo

linux(4): Add a dedicated linux_exec_copyin_args()

Because Linux allows to exec binaries with 0 argc.

Reviewed by: brooks
Differential Revision: https://reviews.freebsd.org/D40148
MFC after: 2 month

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linux(4): Use Linux dev_t type for mknod syscalls dev argument

As of version 2.6.0 of the Linux kernel, dev_t is a 32-bit unsigned integer
on all platforms. Prior the 2.6 kernel dev_t type was an un

linux(4): Use Linux dev_t type for mknod syscalls dev argument

As of version 2.6.0 of the Linux kernel, dev_t is a 32-bit unsigned integer
on all platforms. Prior the 2.6 kernel dev_t type was an unsigned short.
However, since the firs commit of the Linuxulator, mknod syscall get int dev
argument.
Also, there is some confusion here, while the kernel declares a dev_t type
as a 32-bit sized, the user-space dev_t type can be size of 64 bits, e.g.,
in the Glibc library.
To avoid confusion and to help porting of the Linuxulator to other platforms
use explicit l_dev_t for dev argument of mknod syscalls.

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linux(4): Update syscalls.master to reflect struct l_old_stat

syscall.master: Fix comments

Have more accruate comments. While #if, #else, etc are copied to the
header files, lines that don't start with # are not. And #include files
are only output to sysinc (

syscall.master: Fix comments

Have more accruate comments. While #if, #else, etc are copied to the
header files, lines that don't start with # are not. And #include files
are only output to sysinc (which winds up at the front of init_sysent.c
which seems a bit odd). This is all radically undocumented, and likely
has drifted somewhat from 4.4BSD and what other systems do (they've
drifted too, fwiw).

Sponsored by: Netflix

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linux(4): Modify close_range syscall to match Linux

MFC after: 2 weeks

linux(4): Fix 039e98e6.

The patch was about an year in my local queue and I still screwed up...

MFC after: 2 weeks

linux(4): Change prctl syscall definition to match Linux actual one.

Otherwise argX conversion leads to an unexpected behaviour.

MFC after: 2 weeks

linux(4): Fix ppoll_time64 syscall definition.

Fixed my typo in ed61e0ce1d. Here tsp is a pointer to the 64-bit timespec.

MFC after: 2 weeks

linux(4): Change semtimedop syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change recvmmsg_time64 syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change timerfd_gettime64 syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change timerfd_settime64 syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change timer_settime64 syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change timer_gettime64 syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change sched_rr_get_interval_time64 syscall definition to match Linux actual one.

MFC after: 2 weeks

linux(4): Change epoll_pwait2 syscall definition to match Linux actual one.

MFC after: 2 weeks