src/usr.bin/cmp/regular.c, branch releng/4.9 FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=releng%2F4.9 2001-11-21T10:47:54Z Sync with -current: 2001-11-21T10:47:54Z David Malone dwmalone@FreeBSD.org 2001-11-21T10:47:54Z urn:sha1:21e83f0ea657fe5a2f3b9d887212b47b525313cb Make cmp work by mmapping chunks of a file. Don't use gcc -Wall flag. Make filenames const to avoid a few warnings. Add FreeBSD tags. MFC: 2000-07-02T11:14:42Z Paul Saab ps@FreeBSD.org 2000-07-02T11:14:42Z urn:sha1:77c58b102c28e099350c3bfcc21e00873ddd3609 [rev 1.9] Fix warning I should have caught in the previous commit. [rev 1.10] Make cmp -s work properly if skip values are given. MFC: Let cmp(1) grow in -x option to print differences in contemporarry 2000-07-02T09:28:37Z Paul Saab ps@FreeBSD.org 2000-07-02T09:28:37Z urn:sha1:f2bcc562999328041548919873df6ce4b2e70ea9 hex format rather than the mixed decimal/octal format of -l. Fix improper mmap length paramater which can result in improper behavior 1999-07-29T23:26:22Z Brian Feldman green@FreeBSD.org 1999-07-29T23:26:22Z urn:sha1:ac0222655510fcce56727d718c4179c2d4a7543f or cmp crashing in specific cases. More egcs warning fixes: 1999-04-25T22:37:58Z Warner Losh imp@FreeBSD.org 1999-04-25T22:37:58Z urn:sha1:96846ff64680fa4945300ede843b93311fea74fc o main returns int not void o use return 0 at end of main when needed o use braces to avoid potentially ambiguous else o don't default to type int o #ifdef 0 -> #if 0 Reviewed by: obrien and chuckr Tweaks to allow compiling -Wall (mostly adding "const" to char rcsid[]). 1998-12-06T22:58:23Z Archie Cobbs archie@FreeBSD.org 1998-12-06T22:58:23Z urn:sha1:fa146c53357ea20afd3661d8093ea1db44198d5f Sweep through the tree fixing mmap() usage: 1997-01-16T21:58:40Z Alexander Langer alex@FreeBSD.org 1997-01-16T21:58:40Z urn:sha1:8abdc2eb40c03b97153f2a01bdb53927f3a336c1 - Use MAP_FAILED instead of the constant -1 to indicate failure (required by POSIX). - Removed flag arguments of '0' (required by POSIX). - Fixed code which expected an error return of 0. - Fixed code which thought any address with the high bit set was an error. - Check for failure where no checks were present. Discussed with: bde Our mmap(2) has a limitation where the `offset' parameter must be 1997-01-08T12:00:55Z Joerg Wunsch joerg@FreeBSD.org 1997-01-08T12:00:55Z urn:sha1:c28065c606fcaaf574eb9adfa8ddc32b7885e0cc page-aligned. cmp(1) should know about this flaw, and work around it. While i was at it, fixed an uninitialized variable as reported by -Wall. When mmap is used, do an madvise(MADV_SEQUENTIAL) to make things 1996-12-11T05:20:20Z John Dyson dyson@FreeBSD.org 1996-12-11T05:20:20Z urn:sha1:2ae09ad8716384fb7ca9dae3a08c077788d0825d go much more quickly when file input is really done. Of course, the fully cached case will make no difference. BSD 4.4 Lite Usr.bin Sources 1994-05-27T12:33:43Z Rodney W. Grimes rgrimes@FreeBSD.org 1994-05-27T12:33:43Z urn:sha1:9b50d9027575220cb6dd09b3e62f03f511e908b8