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14 commits

Author SHA1 Message Date
Warner Losh a2f733abcf lib: 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
2023-11-26 22:23:59 -07:00
Warner Losh 1d386b48a5 Remove $FreeBSD$: one-line .c pattern
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
2023-08-16 11:54:42 -06:00
Warner Losh 4d846d260e spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix
2023-05-12 10:44:03 -06:00
Bartek Rutkowski e285e32e56 humanize_number(3): fix math edge case in rounding large numbers
Fix for remainder overflow, when in rare cases adding remainder to divider
exceeded 1 and turned the total to 1000 in final formatting, taking up
the space for the unit character.

The fix continues the division of the original number if the above case
happens -- added the appropriate check to the for loop performing
the division. This lowers the value shown, to make it fit into the buffer
space provided (1.0M for 4+1 character buffer, as used by ls).

Add test case for the reported bug and extend test program to support
providing buffer length (ls -lh uses 5, tests hard-coded 4).

PR:		224498
Submitted by:	Pawel Biernacki <pawel.biernacki@gmail.com>
Reported by:	Masachika Ishizuka <ish@amail.plala.or.jp>
Reviewed by:	cem, kib
Approved by:	cem, kib
MFC after:	1 week
Sponsored by:	Mysterious Code Ltd.
Differential Revision:	D13578
2017-12-28 22:57:34 +00:00
Pedro F. Giffuni 5e53a4f90f lib: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

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.
2017-11-26 02:00:33 +00:00
Brooks Davis 72f0a13e60 Correct an out of bounds read with HN_AUTOSCALE and very large numbers.
The maximum scale is 6 (K, M, G, T, P, E) (B is 0).

Overly large explict scales were checked correctly, but for sufficently
large numbers HN_AUTOSCALE would get to 7 resulting in an out of bounds
read.

Found with humanize_number_test and CHERI bounds checking.

Reviewed by:	emaste
Obtained from:	CheriBSD
MFC after:	1 week
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D10376
2017-04-13 15:49:32 +00:00
John-Mark Gurney 44f01c419d don't assert on bad args, instead return an error..
Since so many programs don't check return value, always NUL terminate
the buf...

fix rounding when using base 1024 (the bug that started it all)...

add a set of test cases so we can make sure that things don't break
in the future...

Thanks to Clifton Royston for testing and the test program...

Approved by:	re (hrs, glebius)
MFC after:	1 week
2013-10-07 22:22:57 +00:00
Baptiste Daroussin de0bfe73b9 Fix IEC / SI binary prefixes (Ki, Mi, Gi, etc) production by humanize_number(3)
PR:		bin/171487
Submitted by:	matthew
MFC after:	1 week
2012-09-12 11:41:03 +00:00
Xin LI 7d14df1a2d Add support for IEE/IEC (and now also SI) power of two notions of
prefixes (Ki, Mi, Gi...) for humanize_number(3).

Note that applications has to pass HN_IEC_PREFIXES to use this
feature for backward compatibility reasons.

Reviewed by:	arundel
MFC after:	2 weeks
2011-04-12 22:48:03 +00:00
Xin LI a699e14f45 humanize_number(3) multiply the input number by 100, which could cause an
integer overflow when the input is very large (for example, 100 Pi would
become about 10 Ei which exceeded signed int64_t).

Solve this issue by splitting the division into two parts and avoid the
multiplication.

PR:		bin/146205
Reviewed by:	arundel
MFC after:	1 month
2011-03-23 22:08:01 +00:00
Xin LI 75d2ea6c50 Merge NetBSD revision 1.14: humanize_number.c is now 2-clause BSD licensed.
(humanize_number.3 intentionally hold back until I make sure why we didn't
merged dehumanize_number(3)).

Obtained from:	NetBSD
2009-06-23 23:27:35 +00:00
Antoine Brodin 6044f112a6 Merge changes from NetBSD on humanize_number.c, 1.8 -> 1.13
Significant changes:
- rev. 1.11: Use PRId64 instead of a cast to long long and %lld to print
an int64_t.
- rev. 1.12: Fix a bug that humanize_number() produces "1000" where it
should be "1.0G" or "1.0M".  The bug reported by Greg Troxel.

PR:		118461
PR:		102694
Approved by:	rwatson (mentor)
Obtained from:	NetBSD
MFC after:	1 month
2008-03-08 21:55:59 +00:00
Pawel Jakub Dawidek bd52c9ac59 Take the lastest fixes from NetBSD.
Obtained from:	NetBSD
2004-09-25 14:11:34 +00:00
Pawel Jakub Dawidek 23d1a17825 Add humanize_number(3) to libutil for formating numbers into a human
readable form.

Obtained from:	NetBSD
2004-05-24 22:19:27 +00:00