Hi,
I've compiled /export/testws/usr/src/lib/crypt_modules/sha256/test.c and tried
to use it to calculate the checksum of the uberblock. This I did as the sha256
executable that comes with solaris is not giving me the correct values for
uberblock.(the output is 64chars whereas zfs output is only 49chars)
Uberblock
magic = 0000000000bab10c
version = 16
txg = 697
guid_sum = 13079999420161054854
timestamp = 1252581875 UTC = Thu Sep 10 16:54:35 2009
so, I got that part of uberblock using 'dd' into another file. I'm opening this
file and reading the contents in test.c as follows:
char *buf;
fp=fopen("/root/ub_dump","rb");
fseek(fp,0,SEEK_END);
len=ftell(fp);
fseek(fp,0,SEEK_SET);
buf=(char *)malloc(len);
then, calling
res = crypt_genhash_impl(mybuffer, mybufflen,
buf, "$5$rounds=123456$asaltof16chars..", NULL);
"zdb -uuu charlie" gives me the uberblock checksum as:
cksum=112d7c6202:6268950ffa7:1243ab8101197:25779601f5266b
but the result from the above modified test.c is not same as this. Can someone
point out if my approach is wrong?
Thanks,
pak
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