void
smp_reset_sign(struct smp_signctx *ctx)
{
memset(ctx->ss, 0, sizeof *ctx->ss);
strcpy(ctx->ss->ident, ctx->id);
ctx->ss->unique = ctx->unique;
ctx->ss->mapped = (uintptr_t)ctx->ss;
SHA256_Init(&ctx->ctx);
SHA256_Update(&ctx->ctx, ctx->ss,
offsetof(struct smp_sign, length));
smp_append_sign(ctx, NULL, 0);
}
void
smp_newsilo(struct smp_sc *sc)
{
struct smp_ident *si;
ASSERT_MGT();
assert(strlen(SMP_IDENT_STRING) < sizeof si->ident);
/* Choose a new random number */
AZ(VRND_RandomCrypto(&sc->unique, sizeof sc->unique));
smp_reset_sign(&sc->idn);
si = sc->ident;
memset(si, 0, sizeof *si);
strcpy(si->ident, SMP_IDENT_STRING);
si->byte_order = 0x12345678;
si->size = sizeof *si;
si->major_version = 2;
si->unique = sc->unique;
si->mediasize = sc->mediasize;
si->granularity = sc->granularity;
/*
* Aim for cache-line-width
*/
si->align = sizeof(void*) * 2;
sc->align = si->align;
si->stuff[SMP_BAN1_STUFF] = sc->granularity;
si->stuff[SMP_BAN2_STUFF] = si->stuff[SMP_BAN1_STUFF] + 1024*1024;
si->stuff[SMP_SEG1_STUFF] = si->stuff[SMP_BAN2_STUFF] + 1024*1024;
si->stuff[SMP_SEG2_STUFF] = si->stuff[SMP_SEG1_STUFF] + 1024*1024;
si->stuff[SMP_SPC_STUFF] = si->stuff[SMP_SEG2_STUFF] + 1024*1024;
si->stuff[SMP_END_STUFF] = si->mediasize;
assert(si->stuff[SMP_SPC_STUFF] < si->stuff[SMP_END_STUFF]);
smp_new_signspace(sc, &sc->ban1, si->stuff[SMP_BAN1_STUFF],
smp_stuff_len(sc, SMP_BAN1_STUFF), "BAN 1");
smp_new_signspace(sc, &sc->ban2, si->stuff[SMP_BAN2_STUFF],
smp_stuff_len(sc, SMP_BAN2_STUFF), "BAN 2");
smp_new_signspace(sc, &sc->seg1, si->stuff[SMP_SEG1_STUFF],
smp_stuff_len(sc, SMP_SEG1_STUFF), "SEG 1");
smp_new_signspace(sc, &sc->seg2, si->stuff[SMP_SEG2_STUFF],
smp_stuff_len(sc, SMP_SEG2_STUFF), "SEG 2");
smp_append_sign(&sc->idn, si, sizeof *si);
smp_sync_sign(&sc->idn);
}
void
smp_append_signspace(struct smp_signspace *spc, uint32_t len)
{
assert(len <= SIGNSPACE_FREE(spc));
smp_append_sign(&spc->ctx, SIGNSPACE_FRONT(spc), len);
}
