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38 Commits

Author SHA1 Message Date
christos
02f63bec71 change error printing to signed for consistency. From Anon Ymous 2007-08-22 16:59:19 +00:00
christos
dc2a5030fc provide more detailed messages with -l. From Anon Ymous 2007-08-21 14:09:53 +00:00
christos
e07345e108 off-by-one (thanks to our anonymous contributor) 2006-06-03 21:47:55 +00:00
christos
e538b980bb If one file is shorter than the other, print the byte and line offsets if 
available. From our anonymous contributor.
 2006-06-03 18:55:02 +00:00
christos
e550e02b95 Coverity CID 1624: Plug memory leak. 2006-04-09 19:47:43 +00:00
garbled
c2c322c5a5 Apply patch from PR bin/23836 cmp did not correctly parse skip arguments 
given in hex or octal, as the manpage states it can.
 2006-01-19 20:44:57 +00:00
enami
fa07a48b77 Don't put a space before function call operator. 2005-04-11 10:39:06 +00:00
enami
e61e3e0913 byte offset and line count shouldn't be initialized inside the loop. 2005-04-11 09:41:02 +00:00
enami
168f415563 Fix indent and wrap long lines. 2005-04-11 09:40:15 +00:00
dsl
48a0480288 Initialise dfound outside loop so that 0 sized files compare correctly 
and to that 'cmp -l' will exit with error is the last block matches.
Pointed out in a private mail bt someone who wishes to remain anonymous.
 2005-03-07 07:51:42 +00:00
dsl
afc59ef61f mmap normal files in 1MB chunks. 
Due to a bug in mmap() the address space isn't counted against ulimit
until the page is faulted in - so mmapping a large file suceeds, but
cmp SIGSEGVs when it runs out of address space.
Also I don't believe that the madvise( MAP_SEQUENTIAL) has the desired
effect, and mmaping a large file is probably very bad for the UBC.
 2005-02-06 21:19:46 +00:00
dsl
6ffe77ddd2 Taking (out) the __P 2005-02-06 20:50:34 +00:00
agc
89aaa1bb64 Move UCB-licensed code from 4-clause to 3-clause licence. 
Patches provided by Joel Baker in PR 22365, verified by myself.
 2003-08-07 11:13:06 +00:00
ross
2a76afae02 Generate <>& symbolically. I'm avoiding .../dist/... directories for now. 2002-02-08 01:36:18 +00:00
wiz
aded0d2cce Whitespace cleanup. 2001-12-01 16:43:07 +00:00
lukem
c2b84904ae use %ll_ instead of the less standard %q_ 2001-01-04 23:05:54 +00:00
mycroft
2dc192ae06 Use MAP_SHARED. 2000-07-27 02:58:57 +00:00
jdolecek
2d6604a645 Do not mmap() with MAP_PRIVATE - looks like kernel tries to preallocate 
some memory in case the mmapped contents would be changed and this fails
for very large files; it's unnecessary anyway, cmp(1) does not change file
contents in any way.
This fixes bin/10625 by Uwe Klaus.

While here, change the code to fallback to classic stdio if mmap fails.
 2000-07-18 10:23:43 +00:00
kleink
0848e8913a * Hint MADV_SEQUENTIAL. 
* -1 -> MAP_FAILED.
 2000-03-20 18:23:26 +00:00
ross
f670fa10c5 Add { and } to shut up egcs. Reformat the more questionable code. 1998-08-25 20:59:36 +00:00
mikel
83d4f0d268 make usage string match manpage 1998-01-12 08:11:19 +00:00
mrg
25b87a361a use MAP_PRIVATE|MAP_FILE rather than "0" 1997-12-09 10:59:54 +00:00
mrg
66f7b9fd72 fix compile warnings on the alpha. 1997-10-19 14:05:56 +00:00
lukem
9992ac3ea9 getopt returns -1 not EOF 1997-10-18 12:54:24 +00:00
lukem
18ce25404d WARNSify, fix .Nm usage 1997-10-18 12:52:04 +00:00
tls
9d225a1783 RCS ID police 1997-01-09 20:18:21 +00:00
mrg
dc8adb9e7c don't warn about missing files with -s. POSIX doesn't define a specific 
action, and, most other implimentations use this (sane) method.  (from jtc).
 1996-02-01 03:32:41 +00:00
tls
94f6fc8e46 Sync with 4.4lite2 1995-09-08 03:22:54 +00:00
tls
46ef75ac74 imported from 44lite2 1995-09-04 21:07:24 +00:00
mycroft
adf20f8c80 Fix bug in handling short reads. 1994-03-25 17:07:02 +00:00
mycroft
84f6895ad3 As suggested by Xavier Leroy <xavier@Theory.Stanford.EDU>, make sure we don't 
flag a short read on the 2nd file as an EOF when it isn't.  This implementation
differs in that at most one read is done per file per comparison, so that an
early mismatch may avoid hanging on input or continuing some expensive process
if reading from a pipe.
 1993-12-02 01:56:04 +00:00
jtc
4d9f06c8e5 Get rid of otoi(), use strtoul() instead. Not only gets rid of a function, 
but allows hex offsets as well.
Misc other minor tweaks.
 1993-11-23 00:50:46 +00:00
jtc
ed96eac23a Document the fact that cmp now conforms to POSIX.2. 1993-09-21 22:37:52 +00:00
jtc
8ad38f4118 Changed to conform to POSIX.2: 
EOF message printed to stderr.
Removed bogositys wrt. getopt() processing (special casing `-' is unnecessary).
Updated usage message to document fact that -s and -l options are mutually
exclusive.
 1993-09-21 22:35:56 +00:00
mycroft
e9d867ef50 Add RCS identifiers. 1993-08-01 17:54:45 +00:00
mycroft
dfb9caab49 Add RCS indentifiers. 1993-08-01 07:32:48 +00:00
mycroft
690cae8181 Add RCS indentifiers. 1993-07-31 15:17:49 +00:00
cgd
61f282557f initial import of 386bsd-0.1 sources 1993-03-21 09:45:37 +00:00