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hash: Add a flag to support saving hashes in the environment

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Some hashing commands permit saving the hash in an environment variable,
and verifying a hash from there. But the crc32 command does not support
this. In order to permit crc32 to use the generic hashing infrastructure,
add a flag to select which behaviour to use.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2013-02-24 17:33:26 +00:00
parent 0ccff500cf
commit d5b76673a5
4 changed files with 66 additions and 26 deletions
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6
common/cmd_sha1sum.c
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@@ -31,7 +31,7 @@
int do_sha1sum(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int verify = 0;
int flags = HASH_FLAG_ENV;
int ac;
char * const *av;
@@ -42,13 +42,13 @@ int do_sha1sum(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
ac = argc - 1;
#ifdef CONFIG_SHA1SUM_VERIFY
if (strcmp(*av, "-v") == 0) {
verify = 1;
flags |= HASH_FLAG_VERIFY;
av++;
ac--;
}
#endif
return hash_command("sha1", verify, cmdtp, flag, ac, av);
return hash_command("sha1", flags, cmdtp, flag, ac, av);
}
#ifdef CONFIG_SHA1SUM_VERIFY