Mercurial > hg > toybox
changeset 336:0c816f5abe22
Add -F option to cksum.
author | Rob Landley <rob@landley.net> |
---|---|
date | Sun, 04 Jan 2009 22:45:03 -0600 |
parents | 556c10abdff6 |
children | aaafa1ceaa91 |
files | toys/cksum.c |
diffstat | 1 files changed, 6 insertions(+), 3 deletions(-) [+] |
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--- a/toys/cksum.c Sun Jan 04 13:27:36 2009 -0600 +++ b/toys/cksum.c Sun Jan 04 22:45:03 2009 -0600 @@ -6,15 +6,18 @@ * * See http://www.opengroup.org/onlinepubs/009695399/utilities/cksum.html -USE_CKSUM(NEWTOY(cksum, NULL, TOYFLAG_BIN)) +USE_CKSUM(NEWTOY(cksum, "F", TOYFLAG_BIN)) config CKSUM bool "cksum" default y help - usage: cksum [file...] + usage: cksum [-F] [file...] + For each file, output crc32 checksum value, length and name of file. If no files listed, copy from stdin. Filename "-" is a synonym for stdin. + + -F Start with 0xffffffff instead of 0. */ #include "toys.h" @@ -32,7 +35,7 @@ static void do_cksum(int fd, char *name) { - unsigned crc = 0; + unsigned crc = toys.optflags ? 0xffffffff : 0; uint64_t llen = 0, llen2; // CRC the data