src/lib/libc/sys/munmap.2, branch releng/14.0 FreeBSD source tree Remove $FreeBSD$: one-line nroff pattern 2023-08-16T17:55:15+00:00 Warner Losh imp@FreeBSD.org 2023-08-16T17:55:15+00:00 b2c76c41be32f904179efed29c0ca04d53f3996c Remove /^\.\\"\s*\$FreeBSD\$$\n/ 
Remove /^\.\\"\s*\$FreeBSD\$$\n/
Implement address space guards. 2017-06-24T17:01:11+00:00 Konstantin Belousov kib@FreeBSD.org 2017-06-24T17:01:11+00:00 19bd0d9c85ccd7bfe34a26d8b386112c6746d795 Guard, requested by the MAP_GUARD mmap(2) flag, prevents the reuse of the allocated address space, but does not allow instantiation of the pages in the range. It is useful for more explicit support for usual two-stage reserve then commit allocators, since it prevents accidental instantiation of the mapping, e.g. by mprotect(2). Use guards to reimplement stack grow code. Explicitely track stack grow area with the guard, including the stack guard page. On stack grow, trivial shift of the guard map entry and stack map entry limits makes the stack expansion. Move the code to detect stack grow and call vm_map_growstack(), from vm_fault() into vm_map_lookup(). As result, it is impossible to get random mapping to occur in the stack grow area, or to overlap the stack guard page. Enable stack guard page by default. Reviewed by: alc, markj Man page update reviewed by: alc, bjk, emaste, markj, pho Tested by: pho, Qualys Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D11306 (man pages) 
Guard, requested by the MAP_GUARD mmap(2) flag, prevents the reuse of
the allocated address space, but does not allow instantiation of the
pages in the range.  It is useful for more explicit support for usual
two-stage reserve then commit allocators, since it prevents accidental
instantiation of the mapping, e.g. by mprotect(2).

Use guards to reimplement stack grow code.  Explicitely track stack
grow area with the guard, including the stack guard page.  On stack
grow, trivial shift of the guard map entry and stack map entry limits
makes the stack expansion.  Move the code to detect stack grow and
call vm_map_growstack(), from vm_fault() into vm_map_lookup().

As result, it is impossible to get random mapping to occur in the
stack grow area, or to overlap the stack guard page.

Enable stack guard page by default.

Reviewed by:	alc, markj
Man page update reviewed by:	alc, bjk, emaste, markj, pho
Tested by:	pho, Qualys
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D11306 (man pages)
Renumber copyright clause 4 2017-02-28T23:42:47+00:00 Warner Losh imp@FreeBSD.org 2017-02-28T23:42:47+00:00 fbbd9655e5107c68e4e0146ff22b73d7350475bc Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96 
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
Per Regents of the University of Calfornia letter, remove advertising 2007-01-09T00:28:16+00:00 Warner Losh imp@FreeBSD.org 2007-01-09T00:28:16+00:00 c879ae3536e6d92b8d96c8965c5b05fcb9541520 clause. # If I've done so improperly on a file, please let me know. 
clause.

# If I've done so improperly on a file, please let me know.
Document EINVAL for len == 0. 2003-11-10T08:02:05+00:00 Dag-Erling Smørgrav des@FreeBSD.org 2003-11-10T08:02:05+00:00 6c10034e83f60a42d912e1d8cff05922170da71d 






mdoc(7) police: "The .Fa argument.".
2002-12-19T09:40:28+00:00

Ruslan Ermilov
ru@FreeBSD.org

2002-12-19T09:40:28+00:00

2efeeba554cbd7bdee9cfe17641c8bd335c7972f












mdoc(7) police: Tidy up the syscall language.
2002-12-18T09:22:32+00:00

Ruslan Ermilov
ru@FreeBSD.org

2002-12-18T09:22:32+00:00

2faeeff4c9bb77cca44a977d96c1a9fc7af8d8a3

Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.





Stop calling system calls "function calls".

Use "The .Fn system call" a-la "The .Nm utility".

When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.







Note that <sys/types.h> in no longer a prerequisite for <utime.h> and
2002-08-24T00:39:43+00:00

Mike Barcroft
mike@FreeBSD.org

2002-08-24T00:39:43+00:00

7ab2cd8c3826e1e5fd390e513aeefbd9f12f4af5

<sys/mman.h>.





<sys/mman.h>.







We are munmap(2), so there's no need to list ourselves in the SEE ALSO
2002-01-07T06:12:25+00:00

Dima Dorfman
dd@FreeBSD.org

2002-01-07T06:12:25+00:00

bfe4f323ec9353ce02e47f1e72a1e3e451387419

section; instead, list our partner in crime, mmap(2).

PR:		33153
Submitted by:	Faried Nawaz <fn@hungry.org>





section; instead, list our partner in crime, mmap(2).

PR:		33153
Submitted by:	Faried Nawaz <fn@hungry.org>







mdoc(7) police: Use the new .In macro for #include statements.
2001-10-01T16:09:29+00:00

Ruslan Ermilov
ru@FreeBSD.org

2001-10-01T16:09:29+00:00

32eef9aeb1f39a1623cea55da147c89abbd5b9a5