uio: Use switch statements when handling UIO_READ vs UIO_WRITE

This is mostly to reduce the diff with CheriBSD which adds additional
constants to enum uio_rw, but also matches the normal style used

uio: Use switch statements when handling UIO_READ vs UIO_WRITE

This is mostly to reduce the diff with CheriBSD which adds additional
constants to enum uio_rw, but also matches the normal style used for
uio_segflg.

Reviewed by: kib, emaste
Obtained from: CheriBSD
Differential Revision: https://reviews.freebsd.org/D45142

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Abstract UIO allocation and deallocation.

Introduce the allocuio() and freeuio() functions to allocate and
deallocate struct uio. This hides the actual allocator interface, so it
is easier to modify

Abstract UIO allocation and deallocation.

Introduce the allocuio() and freeuio() functions to allocate and
deallocate struct uio. This hides the actual allocator interface, so it
is easier to modify the sub-allocation layout of struct uio and the
corresponding iovec array.

Obtained from: CheriBSD
Reviewed by: kib, markj
MFC after: 2 weeks
Sponsored by: CHaOS, EPSRC grant EP/V000292/1
Differential Revision: https://reviews.freebsd.org/D43711

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Fix subr_uio.c style(9) with uses of sizeof.

Obtained from: CheriBSD
Reviewed by: jhb, kib, markj
MFC after: 2 weeks
Sponsored by: CHaOS, EPSRC grant EP/V000292/1
Differential Revision: https://revi

Fix subr_uio.c style(9) with uses of sizeof.

Obtained from: CheriBSD
Reviewed by: jhb, kib, markj
MFC after: 2 weeks
Sponsored by: CHaOS, EPSRC grant EP/V000292/1
Differential Revision: https://reviews.freebsd.org/D43710

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sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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uiomove: Add some assertions

Make sure that we don't try to copy with a negative resid.

Make sure that we don't walk off the end of the iovec array.

Reviewed by: kib
MFC after: 1 week
Sponsored by

uiomove: Add some assertions

Make sure that we don't try to copy with a negative resid.

Make sure that we don't walk off the end of the iovec array.

Reviewed by: kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D42098

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sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

kern: clean up empty lines in .c and .h files

Remove copyinfrom() and copyinstrfrom().

These functions were added in 2001 and are currently unused.
copyinfrom() looks to have never been used. copyinstrfrom() was used
for two weeks before the c

Remove copyinfrom() and copyinstrfrom().

These functions were added in 2001 and are currently unused.
copyinfrom() looks to have never been used. copyinstrfrom() was used
for two weeks before the code was refactored to remove it's sole use.

Reviewed by: brooks, kib
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24928

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Merge ^/head r357408 through r357661.

Remove sparc64 kernel support

Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs

simplify control flow so that gcc knows we never pass save to curthread_pflags_restore
without initializing

MIPS: Implement fue*word* and casueword* in assembly.

Remove NO_FUEWORD so the 'e' variants are wrapped by the non-'e'
variants. This is more correct and leaves sparc64 as the outlier.

Reviewed by

MIPS: Implement fue*word* and casueword* in assembly.

Remove NO_FUEWORD so the 'e' variants are wrapped by the non-'e'
variants. This is more correct and leaves sparc64 as the outlier.

Reviewed by: jmallett, kib
Obtained from: CheriBSD
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14603

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Merge ^/head r325999 through r326131.

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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MFhead@r320180

Merge ^/head r319973 through 321382.

Merge ^/head r320573 through r320970.

Simplify UIO_SYSSPACE and UIO_NOCOPY paths in uiomove

Uiomove can only block when the segflag is UIO_USERSPACE,
otherwise we end up just doing a bcopy (or nothing) and
moving cursors. So only emit w

Simplify UIO_SYSSPACE and UIO_NOCOPY paths in uiomove

Uiomove can only block when the segflag is UIO_USERSPACE,
otherwise we end up just doing a bcopy (or nothing) and
moving cursors. So only emit witness warnings and
set deadlock thread flags in the UIO_USERSPACE case.

Reviewed by: kib
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D11489

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Merge ^/head r313644 through r313895.

Switch copyout_map() to use vm_mmap_object() instead of vm_mmap().

This is both a microoptimization and a move of the consumer to more
commonly used vm function.

Suggested and reviewed by: alc
Spon

Switch copyout_map() to use vm_mmap_object() instead of vm_mmap().

This is both a microoptimization and a move of the consumer to more
commonly used vm function.

Suggested and reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks

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Merge ^/head r307736 through r308146.

In the fueword64(9) wrapper for architectures which do not implemented
native fueword64(9) still, use proper type for local where fuword64()
result is stored.

Note that fueword64() is unused in the

In the fueword64(9) wrapper for architectures which do not implemented
native fueword64(9) still, use proper type for local where fuword64()
result is stored.

Note that fueword64() is unused in the tree.

Submitted by: Chunhui He <hchunhui@mail.ustc.edu.cn>
PR: 212520
MFC after: 1 week

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Merge ^/head r305687 through r305890.

Renumber license clauses in sys/kern to avoid skipping #3