lib/libc/string: add memset_explicit() for compliance with C23

Patterned after explicit_bzero, visible from C23 onwards.

Reviewed by: emaste, kevans
Differential Revision: https://reviews.freebsd.o

lib/libc/string: add memset_explicit() for compliance with C23

Patterned after explicit_bzero, visible from C23 onwards.

Reviewed by: emaste, kevans
Differential Revision: https://reviews.freebsd.org/D47286

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Remove residual blank line at start of Makefile

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

lib: 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

lib: 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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Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

libc: Fix build with WITHOUT_MACHDEP_OPTIMIZATIONS=YES set.

Test Plan: `make buildword WITHOUT_MACHDEP_OPTIMIZATIONS=YES` on 14-CURRENT and 13-STABLE

Reviewed by: emaste

Differential Revision: htt

libc: Fix build with WITHOUT_MACHDEP_OPTIMIZATIONS=YES set.

Test Plan: `make buildword WITHOUT_MACHDEP_OPTIMIZATIONS=YES` on 14-CURRENT and 13-STABLE

Reviewed by: emaste

Differential Revision: https://reviews.freebsd.org/D38017

PR: 266900

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libc: Add strverscmp(3) and versionsort(3)

Add a strverscmp(3) function to libc, a GNU extension I implemented by
reading its glibc manual page. It orders strings following a much more
natural order

libc: Add strverscmp(3) and versionsort(3)

Add a strverscmp(3) function to libc, a GNU extension I implemented by
reading its glibc manual page. It orders strings following a much more
natural ordering (e.g. "ent1 < ent2 < ent10" as opposed to
"ent1 < ent10 < ent2" with strcmp(3)'s lexicographic ordering).

Also add versionsort(3) for use as scandir(3)'s compar argument.

Update manual page for scandir(3) and add one for strverscmp(3).

Reviewed by: pstef, gbe, kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D35807

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libc: Disable ASAN for certain string functions

They deliberately read out-of-bounds values to avoid byte-by-byte
loads and check multiple bytes at once. While this will work on x86,
it is flagged a

libc: Disable ASAN for certain string functions

They deliberately read out-of-bounds values to avoid byte-by-byte
loads and check multiple bytes at once. While this will work on x86,
it is flagged as an out-of-bounds read with ASAN, so we have to
disable instrumentation here. This also causes bounds errors for CHERI,
so in CheriBSD we use implementations that avoid OOB reads.

Differential Revision: https://reviews.freebsd.org/D31045

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libc: add mempcpy(3) and wmempcpy(3)

Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D31180

Implement strerror_l().

Only for the arches that provide user-mode TLS.

PR: 251651
Requested by: yuri
Discussed with: emaste, jilles, tijl
Sponsored by: The FreeBSD Foundation
Differential revision

Implement strerror_l().

Only for the arches that provide user-mode TLS.

PR: 251651
Requested by: yuri
Discussed with: emaste, jilles, tijl
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D27495
MFC after: 2 weeks

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Document memset_s(3). memset_s(3) is defined in
C11 standard (ISO/IEC 9899:2011) K.3.7.4.1 The memset_s function
(p: 621-622)

Fix memset(3) portion of the man page by replacing the first argument
(d

Document memset_s(3). memset_s(3) is defined in
C11 standard (ISO/IEC 9899:2011) K.3.7.4.1 The memset_s function
(p: 621-622)

Fix memset(3) portion of the man page by replacing the first argument
(destination) "b" with "dest", which is more descriptive than "b".
This also makes it consistent with the term used in the memset_s()
portion of the man page.

See also http://en.cppreference.com/w/c/string/byte/memset.

Reviewed by: kib
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D13682

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Implement the memset_s(3) function as specified by the C11 ISO/IEC
9899:2011 Appendix K 3.7.4.1.

Other needed supporting types, defines and constraint_handler
infrastructure is added as specified in

Implement the memset_s(3) function as specified by the C11 ISO/IEC
9899:2011 Appendix K 3.7.4.1.

Other needed supporting types, defines and constraint_handler
infrastructure is added as specified in the C11 spec.

Submitted by: Tom Rix <trix@juniper.net>
Sponsored by: Juniper Networks
Discussed with: ed
MFC after: 3 weeks
Differential revision: https://reviews.freebsd.org/D9903
Differential revision: https://reviews.freebsd.org/D10161

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MFhead@r313243

Merge ^/head r312309 through r312623.

Replace dot-dot relative pathing with SRCTOP-relative paths where possible

This reduces build output, need for recalculating paths, and makes it clearer
which paths are relative to what areas in the

Replace dot-dot relative pathing with SRCTOP-relative paths where possible

This reduces build output, need for recalculating paths, and makes it clearer
which paths are relative to what areas in the source tree. The change in
performance over a locally mounted UFS filesystem was negligible in my testing,
but this may more positively impact other filesystems like NFS.

LIBC_SRCTOP was left alone so Juniper (and other users) can continue to
manipulate lib/libc/Makefile (and other Makefile.inc's under lib/libc) as
include Makefiles with custom options.

Discussed with: marcel, sjg
MFC after: 1 week
Reviewed by: emaste
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D9207

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Merge ^/head r303250 through r304235.

MFhead @ r304232

Add timingsafe_bcmp and timingsafe_memcmp.

Obtained from: OpenBSD
Reviewed by: trasz
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D7280

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

Merge from head@274682

Sync to HEAD@r274095.

IFC @r273206

Remove duplicated code.

Suggested by: jmg

Reintegrate head@r273095

Sponsored by: The FreeBSD Foundation

Merge HEAD@r272944.

IFC @r272887