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Commit Graph

12 Commits

Author SHA1 Message Date
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
Sergey Kandaurov
8d99b9cebd The round of expand_number() cleanups.
o Fix range error checking to detect overflow when uint64_t < uintmax_t.
o Remove a non-functional check for no valid digits as pointed out by Bruce.
o Remove a rather pointless comment describing what the function does.
o Clean up a bunch of style bugs.

Brucified by:	bde
2013-08-30 11:21:52 +00:00
Sergey Kandaurov
7261b203c6 Reset errno before strtoumax() call to properly detect ERANGE.
Restore saved errno if strtoumax() call is successful.

Reported by:	ache
Reviewed by:	jilles
MFC after:	1 week
2013-08-21 22:37:15 +00:00
Sergey Kandaurov
869f276295 Check strtoumax(3) for ERANGE in case of non-prefixed string.
OK'd by:	silence on current@
MFC after:	1 week
2013-08-21 16:46:06 +00:00
Dag-Erling Smørgrav
a2e0c5ae31 Further simplify the code, and update the manpage.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
2010-08-15 18:32:06 +00:00
Dag-Erling Smørgrav
b6fbd4d50d no-op commit to note that the example given in the previous commit is
a very bad one, since the shift does not actually overflow.  This is
a better example (assuming uint64_t = unsigned long long):

  ~0LLU >> 9             =   0x7fffffffffffffLLU
  ~0LLU >> 9 << 10       = 0xfffffffffffffc00LLU
  ~0LLU >> 9 << 10 >> 10 =   0x3fffffffffffffLLU
2010-08-15 14:55:32 +00:00
Dag-Erling Smørgrav
1035d74025 Fix the overflow test. It is possible for the result of an
overflowing shift to be larger than the original value, e.g.

         (uint64_t)1 << 53 = 0x20000000000000
 ((uint64_t)1 << 53) << 10 = 0x8000000000000000
2010-08-15 14:50:03 +00:00
Dag-Erling Smørgrav
bbb2703b4f Simplify expand_number() by combining the (unrolled) loop with the
switch.  Since expand_number() does not accept negative numbers, switch
from int64_t to uint64_t; this makes it easier to check for overflow.

MFC after:	3 weeks
2010-08-14 14:34:36 +00:00
Konstantin Belousov
2db44b8410 Add #include <inttypes.h> for the strtoimax().
Submitted by:	Jilles Tjoelker <jilles stack nl>
MFC after:	3 days
2008-07-07 12:20:34 +00:00
John Birrell
26fc37307b Constify the first argument to expand_number() so that it can
be called with a const without the compiler grisling.
2007-11-18 02:20:02 +00:00
Pawel Jakub Dawidek
c0a6ac3ff0 - Fix strange for loop.
Reported by:	phk

- While here, check the unit before calculating the actually number.
  This way we can return EINVAL for invalid unit instead of ERANGE.

Approved by:	re (kensmith)
2007-09-05 14:27:13 +00:00
Pawel Jakub Dawidek
bd35b57de2 Implement expand_number(3), which is the opposite of humanize_number(3), ie.
a number in human-readable form is converted to int64_t, for example:
123b -> 123
10k -> 10240
16G -> 17179869184

First version submitted by:	Eric Anderson <anderson@freebsd.org>
Approved by:	re (bmah)
2007-09-01 06:19:11 +00:00