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unvac: add -d flag (David Swasey)

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This commit is contained in:
Russ Cox 2008-12-06 16:14:10 -08:00
parent 115dbcecc8
commit 286bb40b76
5 changed files with 97 additions and 23 deletions
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18
src/cmd/vac/vac.c
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@ -439,24 +439,6 @@ enum {
};
#endif
/*
* Does block b of f have the same SHA1 hash as the n bytes at buf?
*/
static int
sha1matches(VacFile *f, ulong b, uchar *buf, int n)
{
uchar fscore[VtScoreSize];
uchar bufscore[VtScoreSize];
if(vacfileblockscore(f, b, fscore) < 0)
return 0;
n = vtzerotruncate(VtDataType, buf, n);
sha1(buf, n, bufscore, nil);
if(memcmp(bufscore, fscore, VtScoreSize) == 0)
return 1;
return 0;
}
/*
* Archive the file named name, which has stat info d,
* into the vac directory fp (p = parent).